X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=binutils%2Fdwarf.c;h=ad961b8c9d0758704f05023f3a73f441b43fd3c4;hb=9108bc33b1ca0b2e930c0cce5b1a0394e33e86be;hp=db76ce8ef2f347267cabc5ba2c34fb964739f8ce;hpb=51d0d03fd32f2e5557a3a85462ca6774381b39ba;p=deliverable%2Fbinutils-gdb.git diff --git a/binutils/dwarf.c b/binutils/dwarf.c index db76ce8ef2..ad961b8c9d 100644 --- a/binutils/dwarf.c +++ b/binutils/dwarf.c @@ -1,6 +1,5 @@ /* dwarf.c -- display DWARF contents of a BFD binary file - Copyright 2005, 2006, 2007, 2008, 2009, 2010, 2011 - Free Software Foundation, Inc. + Copyright (C) 2005-2018 Free Software Foundation, Inc. This file is part of GNU Binutils. @@ -28,22 +27,34 @@ #include "elf/common.h" #include "dwarf2.h" #include "dwarf.h" +#include "gdb/gdb-index.h" +#include "filenames.h" +#include + +#undef MAX +#undef MIN +#define MAX(a, b) ((a) > (b) ? (a) : (b)) +#define MIN(a, b) ((a) < (b) ? (a) : (b)) static const char *regname (unsigned int regno, int row); static int have_frame_base; static int need_base_address; -static unsigned int last_pointer_size = 0; -static int warned_about_missing_comp_units = FALSE; - static unsigned int num_debug_info_entries = 0; +static unsigned int alloc_num_debug_info_entries = 0; static debug_info *debug_information = NULL; /* Special value for num_debug_info_entries to indicate that the .debug_info section could not be loaded/parsed. */ #define DEBUG_INFO_UNAVAILABLE (unsigned int) -1 -int eh_addr_size; +static const char * dwo_name; +static const char * dwo_dir; +static const unsigned char * dwo_id; +static bfd_size_type dwo_id_len; +static bfd_boolean need_dwo_info; + +unsigned int eh_addr_size; int do_debug_info; int do_debug_abbrevs; @@ -61,16 +72,59 @@ int do_gdb_index; int do_trace_info; int do_trace_abbrevs; int do_trace_aranges; +int do_debug_addr; +int do_debug_cu_index; int do_wide; +int do_debug_links; +int do_follow_links; int dwarf_cutoff_level = -1; unsigned long dwarf_start_die; +int dwarf_check = 0; + +/* Convenient constant, to avoid having to cast -1 to dwarf_vma when + testing whether e.g. a locview list is present. */ +static const dwarf_vma vm1 = -1; + +/* Collection of CU/TU section sets from .debug_cu_index and .debug_tu_index + sections. For version 1 package files, each set is stored in SHNDX_POOL + as a zero-terminated list of section indexes comprising one set of debug + sections from a .dwo file. */ + +static unsigned int *shndx_pool = NULL; +static unsigned int shndx_pool_size = 0; +static unsigned int shndx_pool_used = 0; + +/* Pointer to a separate file containing extra debug information. */ +static void * separate_debug_file = NULL; +static const char * separate_debug_filename = NULL; + +/* For version 2 package files, each set contains an array of section offsets + and an array of section sizes, giving the offset and size of the + contribution from a CU or TU within one of the debug sections. + When displaying debug info from a package file, we need to use these + tables to locate the corresponding contributions to each section. */ + +struct cu_tu_set +{ + uint64_t signature; + dwarf_vma section_offsets[DW_SECT_MAX]; + size_t section_sizes[DW_SECT_MAX]; +}; + +static int cu_count = 0; +static int tu_count = 0; +static struct cu_tu_set *cu_sets = NULL; +static struct cu_tu_set *tu_sets = NULL; + +static bfd_boolean load_cu_tu_indexes (void *); + /* Values for do_debug_lines. */ #define FLAG_DEBUG_LINES_RAW 1 #define FLAG_DEBUG_LINES_DECODED 2 -static int +static unsigned int size_of_encoded_value (int encoding) { switch (encoding & 0x7) @@ -84,13 +138,38 @@ size_of_encoded_value (int encoding) } static dwarf_vma -get_encoded_value (unsigned char *data, +get_encoded_value (unsigned char **pdata, int encoding, - struct dwarf_section *section) + struct dwarf_section *section, + unsigned char * end) { - int size = size_of_encoded_value (encoding); + unsigned char * data = * pdata; + unsigned int size = size_of_encoded_value (encoding); dwarf_vma val; + if (data + size >= end) + { + warn (_("Encoded value extends past end of section\n")); + * pdata = end; + return 0; + } + + /* PR 17512: file: 002-829853-0.004. */ + if (size > 8) + { + warn (_("Encoded size of %d is too large to read\n"), size); + * pdata = end; + return 0; + } + + /* PR 17512: file: 1085-5603-0.004. */ + if (size == 0) + { + warn (_("Encoded size of 0 is too small to read\n")); + * pdata = end; + return 0; + } + if (encoding & DW_EH_PE_signed) val = byte_get_signed (data, size); else @@ -98,55 +177,32 @@ get_encoded_value (unsigned char *data, if ((encoding & 0x70) == DW_EH_PE_pcrel) val += section->address + (data - section->start); + + * pdata = data + size; return val; } -/* Print a dwarf_vma value (typically an address, offset or length) in - hexadecimal format, followed by a space. The length of the value (and - hence the precision displayed) is determined by the byte_size parameter. */ - -static void -print_dwarf_vma (dwarf_vma val, unsigned byte_size) -{ - static char buff[18]; - int offset = 0; - - /* Printf does not have a way of specifiying a maximum field width for an - integer value, so we print the full value into a buffer and then select - the precision we need. */ -#if __STDC_VERSION__ >= 199901L || (defined(__GNUC__) && __GNUC__ >= 2) -#ifndef __MINGW32__ - snprintf (buff, sizeof (buff), "%16.16llx ", val); -#else - snprintf (buff, sizeof (buff), "%016I64x ", val); -#endif +#if defined HAVE_LONG_LONG && SIZEOF_LONG_LONG > SIZEOF_LONG +# ifndef __MINGW32__ +# define DWARF_VMA_FMT "ll" +# define DWARF_VMA_FMT_LONG "%16.16llx" +# else +# define DWARF_VMA_FMT "I64" +# define DWARF_VMA_FMT_LONG "%016I64x" +# endif #else - snprintf (buff, sizeof (buff), "%16.16lx ", val); +# define DWARF_VMA_FMT "l" +# define DWARF_VMA_FMT_LONG "%16.16lx" #endif - if (byte_size != 0) - { - if (byte_size > 0 && byte_size <= 8) - offset = 16 - 2 * byte_size; - else - error ("Wrong size in print_dwarf_vma"); - } - - fputs (buff + offset, stdout); -} - -#if __STDC_VERSION__ >= 199901L || (defined(__GNUC__) && __GNUC__ >= 2) -#ifndef __MINGW32__ -#define DWARF_VMA_FMT "ll" -#else -#define DWARF_VMA_FMT "I64" -#endif -#else -#define DWARF_VMA_FMT "l" -#endif +/* Convert a dwarf vma value into a string. Returns a pointer to a static + buffer containing the converted VALUE. The value is converted according + to the printf formating character FMTCH. If NUM_BYTES is non-zero then + it specifies the maximum number of bytes to be displayed in the converted + value and FMTCH is ignored - hex is always used. */ static const char * -dwarf_vmatoa (const char *fmtch, dwarf_vma value) +dwarf_vmatoa_1 (const char *fmtch, dwarf_vma value, unsigned num_bytes) { /* As dwarf_vmatoa is used more then once in a printf call for output, we are cycling through an fixed array of pointers @@ -156,28 +212,108 @@ dwarf_vmatoa (const char *fmtch, dwarf_vma value) { char place[64]; } buf[16]; - char fmt[32]; char *ret; - sprintf (fmt, "%%%s%s", DWARF_VMA_FMT, fmtch); - ret = buf[buf_pos++].place; buf_pos %= ARRAY_SIZE (buf); - snprintf (ret, sizeof (buf[0].place), fmt, value); + if (num_bytes) + { + /* Printf does not have a way of specifying a maximum field width for an + integer value, so we print the full value into a buffer and then select + the precision we need. */ + snprintf (ret, sizeof (buf[0].place), DWARF_VMA_FMT_LONG, value); + if (num_bytes > 8) + num_bytes = 8; + return ret + (16 - 2 * num_bytes); + } + else + { + char fmt[32]; + + if (fmtch) + sprintf (fmt, "%%%s%s", DWARF_VMA_FMT, fmtch); + else + sprintf (fmt, "%%%s", DWARF_VMA_FMT); + snprintf (ret, sizeof (buf[0].place), fmt, value); + return ret; + } +} - return ret; +static inline const char * +dwarf_vmatoa (const char * fmtch, dwarf_vma value) +{ + return dwarf_vmatoa_1 (fmtch, value, 0); +} + +/* Print a dwarf_vma value (typically an address, offset or length) in + hexadecimal format, followed by a space. The length of the VALUE (and + hence the precision displayed) is determined by the NUM_BYTES parameter. */ + +static void +print_dwarf_vma (dwarf_vma value, unsigned num_bytes) +{ + printf ("%s ", dwarf_vmatoa_1 (NULL, value, num_bytes)); +} + +/* Print a view number in hexadecimal value, with the same width + print_dwarf_vma would have printed it with the same num_bytes. + Print blanks for zero view, unless force is nonzero. */ + +static void +print_dwarf_view (dwarf_vma value, unsigned num_bytes, int force) +{ + int len; + if (!num_bytes) + len = 4; + else + len = num_bytes * 2; + + assert (value == (unsigned long) value); + if (value || force) + printf ("v%0*lx ", len - 1, (unsigned long) value); + else + printf ("%*s", len + 1, ""); +} + +/* Format a 64-bit value, given as two 32-bit values, in hex. + For reentrancy, this uses a buffer provided by the caller. */ + +static const char * +dwarf_vmatoa64 (dwarf_vma hvalue, dwarf_vma lvalue, char *buf, + unsigned int buf_len) +{ + int len = 0; + + if (hvalue == 0) + snprintf (buf, buf_len, "%" DWARF_VMA_FMT "x", lvalue); + else + { + len = snprintf (buf, buf_len, "%" DWARF_VMA_FMT "x", hvalue); + snprintf (buf + len, buf_len - len, + "%08" DWARF_VMA_FMT "x", lvalue); + } + + return buf; } +/* Read in a LEB128 encoded value starting at address DATA. + If SIGN is true, return a signed LEB128 value. + If LENGTH_RETURN is not NULL, return in it the number of bytes read. + No bytes will be read at address END or beyond. */ + dwarf_vma -read_leb128 (unsigned char *data, unsigned int *length_return, int sign) +read_leb128 (unsigned char *data, + unsigned int *length_return, + bfd_boolean sign, + const unsigned char * const end) { dwarf_vma result = 0; unsigned int num_read = 0; unsigned int shift = 0; - unsigned char byte; + unsigned char byte = 0; - do + while (data < end) { byte = *data++; num_read++; @@ -185,29 +321,158 @@ read_leb128 (unsigned char *data, unsigned int *length_return, int sign) result |= ((dwarf_vma) (byte & 0x7f)) << shift; shift += 7; + if ((byte & 0x80) == 0) + break; + /* PR 17512: file: 0ca183b8. + FIXME: Should we signal this error somehow ? */ + if (shift >= sizeof (result) * 8) + break; } - while (byte & 0x80); if (length_return != NULL) *length_return = num_read; if (sign && (shift < 8 * sizeof (result)) && (byte & 0x40)) - result |= -1L << shift; + result |= -((dwarf_vma) 1 << shift); return result; } /* Create a signed version to avoid painful typecasts. */ -static dwarf_signed_vma -read_sleb128 (unsigned char *data, unsigned int *length_return) +static inline dwarf_signed_vma +read_sleb128 (unsigned char * data, + unsigned int * length_return, + const unsigned char * const end) +{ + return (dwarf_signed_vma) read_leb128 (data, length_return, TRUE, end); +} + +static inline dwarf_vma +read_uleb128 (unsigned char * data, + unsigned int * length_return, + const unsigned char * const end) { - return (dwarf_signed_vma) read_leb128 (data, length_return, 1); + return read_leb128 (data, length_return, FALSE, end); } +#define SKIP_ULEB() read_uleb128 (start, & length_return, end); start += length_return +#define SKIP_SLEB() read_sleb128 (start, & length_return, end); start += length_return + +#define READ_ULEB(var) \ + do \ + { \ + dwarf_vma _val; \ + \ + (var) = _val = read_uleb128 (start, &length_return, end); \ + if ((var) != _val) \ + error (_("Internal error: %s:%d: LEB value (%s) " \ + "too large for containing variable\n"), \ + __FILE__, __LINE__, dwarf_vmatoa ("u", _val)); \ + start += length_return; \ + } \ + while (0) + +#define READ_SLEB(var) \ + do \ + { \ + dwarf_signed_vma _val; \ + \ + (var) = _val = read_sleb128 (start, &length_return, end); \ + if ((var) != _val) \ + error (_("Internal error: %s:%d: LEB value (%s) " \ + "too large for containing variable\n"), \ + __FILE__, __LINE__, dwarf_vmatoa ("d", _val)); \ + start += length_return; \ + } \ + while (0) + +/* Read AMOUNT bytes from PTR and store them in VAL as an unsigned value. + Checks to make sure that the read will not reach or pass END + and that VAL is big enough to hold AMOUNT bytes. */ +#define SAFE_BYTE_GET(VAL, PTR, AMOUNT, END) \ + do \ + { \ + unsigned int amount = (AMOUNT); \ + if (sizeof (VAL) < amount) \ + { \ + error (ngettext ("internal error: attempt to read %d byte " \ + "of data in to %d sized variable", \ + "internal error: attempt to read %d bytes " \ + "of data in to %d sized variable", \ + amount), \ + amount, (int) sizeof (VAL)); \ + amount = sizeof (VAL); \ + } \ + if (((PTR) + amount) >= (END)) \ + { \ + if ((PTR) < (END)) \ + amount = (END) - (PTR); \ + else \ + amount = 0; \ + } \ + if (amount == 0 || amount > 8) \ + VAL = 0; \ + else \ + VAL = byte_get ((PTR), amount); \ + } \ + while (0) + +/* Like SAFE_BYTE_GET, but also increments PTR by AMOUNT. */ +#define SAFE_BYTE_GET_AND_INC(VAL, PTR, AMOUNT, END) \ + do \ + { \ + SAFE_BYTE_GET (VAL, PTR, AMOUNT, END); \ + PTR += AMOUNT; \ + } \ + while (0) + +/* Like SAFE_BYTE_GET, but reads a signed value. */ +#define SAFE_SIGNED_BYTE_GET(VAL, PTR, AMOUNT, END) \ + do \ + { \ + unsigned int amount = (AMOUNT); \ + if (((PTR) + amount) >= (END)) \ + { \ + if ((PTR) < (END)) \ + amount = (END) - (PTR); \ + else \ + amount = 0; \ + } \ + if (amount) \ + VAL = byte_get_signed ((PTR), amount); \ + else \ + VAL = 0; \ + } \ + while (0) + +/* Like SAFE_SIGNED_BYTE_GET, but also increments PTR by AMOUNT. */ +#define SAFE_SIGNED_BYTE_GET_AND_INC(VAL, PTR, AMOUNT, END) \ + do \ + { \ + SAFE_SIGNED_BYTE_GET (VAL, PTR, AMOUNT, END); \ + PTR += AMOUNT; \ + } \ + while (0) + +#define SAFE_BYTE_GET64(PTR, HIGH, LOW, END) \ + do \ + { \ + if (((PTR) + 8) <= (END)) \ + { \ + byte_get_64 ((PTR), (HIGH), (LOW)); \ + } \ + else \ + { \ + * (LOW) = * (HIGH) = 0; \ + } \ + } \ + while (0) + typedef struct State_Machine_Registers { dwarf_vma address; + unsigned int view; unsigned int file; unsigned int line; unsigned int column; @@ -215,8 +480,8 @@ typedef struct State_Machine_Registers int basic_block; unsigned char op_index; unsigned char end_sequence; -/* This variable hold the number of the last entry seen - in the File Table. */ + /* This variable hold the number of the last entry seen + in the File Table. */ unsigned int last_file_entry; } SMR; @@ -226,6 +491,7 @@ static void reset_state_machine (int is_stmt) { state_machine_regs.address = 0; + state_machine_regs.view = 0; state_machine_regs.op_index = 0; state_machine_regs.file = 1; state_machine_regs.line = 1; @@ -240,20 +506,23 @@ reset_state_machine (int is_stmt) Returns the number of bytes read. */ static int -process_extended_line_op (unsigned char *data, int is_stmt) +process_extended_line_op (unsigned char * data, + int is_stmt, + unsigned char * end) { unsigned char op_code; unsigned int bytes_read; unsigned int len; unsigned char *name; + unsigned char *orig_data = data; dwarf_vma adr; - len = read_leb128 (data, & bytes_read, 0); + len = read_uleb128 (data, & bytes_read, end); data += bytes_read; - if (len == 0) + if (len == 0 || data == end || len > (uintptr_t) (end - data)) { - warn (_("badly formed extended line op encountered!\n")); + warn (_("Badly formed extended line op encountered!\n")); return bytes_read; } @@ -270,30 +539,48 @@ process_extended_line_op (unsigned char *data, int is_stmt) break; case DW_LNE_set_address: - adr = byte_get (data, len - bytes_read - 1); + /* PR 17512: file: 002-100480-0.004. */ + if (len - bytes_read - 1 > 8) + { + warn (_("Length (%d) of DW_LNE_set_address op is too long\n"), + len - bytes_read - 1); + adr = 0; + } + else + SAFE_BYTE_GET (adr, data, len - bytes_read - 1, end); printf (_("set Address to 0x%s\n"), dwarf_vmatoa ("x", adr)); state_machine_regs.address = adr; + state_machine_regs.view = 0; state_machine_regs.op_index = 0; break; case DW_LNE_define_file: - printf (_(" define new File Table entry\n")); + printf (_("define new File Table entry\n")); printf (_(" Entry\tDir\tTime\tSize\tName\n")); - printf (" %d\t", ++state_machine_regs.last_file_entry); - name = data; - data += strlen ((char *) data) + 1; - printf ("%s\t", dwarf_vmatoa ("u", read_leb128 (data, & bytes_read, 0))); - data += bytes_read; - printf ("%s\t", dwarf_vmatoa ("u", read_leb128 (data, & bytes_read, 0))); - data += bytes_read; - printf ("%s\t", dwarf_vmatoa ("u", read_leb128 (data, & bytes_read, 0))); - printf ("%s\n\n", name); + + { + size_t l; + + name = data; + l = strnlen ((char *) data, end - data); + data += len + 1; + printf ("%s\t", dwarf_vmatoa ("u", read_uleb128 (data, & bytes_read, end))); + data += bytes_read; + printf ("%s\t", dwarf_vmatoa ("u", read_uleb128 (data, & bytes_read, end))); + data += bytes_read; + printf ("%s\t", dwarf_vmatoa ("u", read_uleb128 (data, & bytes_read, end))); + data += bytes_read; + printf ("%.*s\n\n", (int) l, name); + } + + if (((unsigned int) (data - orig_data) != len) || data == end) + warn (_("DW_LNE_define_file: Bad opcode length\n")); break; case DW_LNE_set_discriminator: printf (_("set Discriminator to %s\n"), - dwarf_vmatoa ("u", read_leb128 (data, & bytes_read, 0))); + dwarf_vmatoa ("u", read_uleb128 (data, & bytes_read, end))); break; /* HP extensions. */ @@ -329,68 +616,68 @@ process_extended_line_op (unsigned char *data, int is_stmt) break; case DW_LNE_HP_source_file_correlation: { - unsigned char *edata = data + len - bytes_read - 1; - - printf ("DW_LNE_HP_source_file_correlation\n"); - - while (data < edata) - { - unsigned int opc; - - opc = read_leb128 (data, & bytes_read, 0); - data += bytes_read; - - switch (opc) - { - case DW_LNE_HP_SFC_formfeed: - printf (" DW_LNE_HP_SFC_formfeed\n"); - break; - case DW_LNE_HP_SFC_set_listing_line: - printf (" DW_LNE_HP_SFC_set_listing_line (%s)\n", - dwarf_vmatoa ("u", - read_leb128 (data, & bytes_read, 0))); - data += bytes_read; - break; - case DW_LNE_HP_SFC_associate: - printf (" DW_LNE_HP_SFC_associate "); - printf (_("(%s"), - dwarf_vmatoa ("u", - read_leb128 (data, & bytes_read, 0))); - data += bytes_read; - printf (_(",%s"), - dwarf_vmatoa ("u", - read_leb128 (data, & bytes_read, 0))); - data += bytes_read; - printf (_(",%s)\n"), - dwarf_vmatoa ("u", - read_leb128 (data, & bytes_read, 0))); - data += bytes_read; - break; - default: - printf (" UNKNOW DW_LNE_HP_SFC opcode (%u)\n", opc); - data = edata; - break; - } - } + unsigned char *edata = data + len - bytes_read - 1; + + printf ("DW_LNE_HP_source_file_correlation\n"); + + while (data < edata) + { + unsigned int opc; + + opc = read_uleb128 (data, & bytes_read, edata); + data += bytes_read; + + switch (opc) + { + case DW_LNE_HP_SFC_formfeed: + printf (" DW_LNE_HP_SFC_formfeed\n"); + break; + case DW_LNE_HP_SFC_set_listing_line: + printf (" DW_LNE_HP_SFC_set_listing_line (%s)\n", + dwarf_vmatoa ("u", + read_uleb128 (data, & bytes_read, edata))); + data += bytes_read; + break; + case DW_LNE_HP_SFC_associate: + printf (" DW_LNE_HP_SFC_associate "); + printf ("(%s", + dwarf_vmatoa ("u", + read_uleb128 (data, & bytes_read, edata))); + data += bytes_read; + printf (",%s", + dwarf_vmatoa ("u", + read_uleb128 (data, & bytes_read, edata))); + data += bytes_read; + printf (",%s)\n", + dwarf_vmatoa ("u", + read_uleb128 (data, & bytes_read, edata))); + data += bytes_read; + break; + default: + printf (_(" UNKNOWN DW_LNE_HP_SFC opcode (%u)\n"), opc); + data = edata; + break; + } + } } break; default: { - unsigned int rlen = len - bytes_read - 1; - - if (op_code >= DW_LNE_lo_user - /* The test against DW_LNW_hi_user is redundant due to - the limited range of the unsigned char data type used - for op_code. */ - /*&& op_code <= DW_LNE_hi_user*/) - printf (_("user defined: ")); - else - printf (_("UNKNOWN: ")); - printf (_("length %d ["), rlen); - for (; rlen; rlen--) - printf (" %02x", *data++); - printf ("]\n"); + unsigned int rlen = len - bytes_read - 1; + + if (op_code >= DW_LNE_lo_user + /* The test against DW_LNW_hi_user is redundant due to + the limited range of the unsigned char data type used + for op_code. */ + /*&& op_code <= DW_LNE_hi_user*/) + printf (_("user defined: ")); + else + printf (_("UNKNOWN: ")); + printf (_("length %d ["), rlen); + for (; rlen; rlen--) + printf (" %02x", *data++); + printf ("]\n"); } break; } @@ -398,26 +685,130 @@ process_extended_line_op (unsigned char *data, int is_stmt) return len; } -static const char * +static const unsigned char * fetch_indirect_string (dwarf_vma offset) { struct dwarf_section *section = &debug_displays [str].section; + const unsigned char * ret; if (section->start == NULL) - return _(""); + return (const unsigned char *) _(""); - /* DWARF sections under Mach-O have non-zero addresses. */ - offset -= section->address; - if (offset > section->size) + if (offset >= section->size) { warn (_("DW_FORM_strp offset too big: %s\n"), dwarf_vmatoa ("x", offset)); - return _(""); + return (const unsigned char *) _(""); + } + + ret = section->start + offset; + /* Unfortunately we cannot rely upon the .debug_str section ending with a + NUL byte. Since our caller is expecting to receive a well formed C + string we test for the lack of a terminating byte here. */ + if (strnlen ((const char *) ret, section->size - offset) + == section->size - offset) + ret = (const unsigned char *) + _(""); + + return ret; +} + +static const unsigned char * +fetch_indirect_line_string (dwarf_vma offset) +{ + struct dwarf_section *section = &debug_displays [line_str].section; + const unsigned char * ret; + + if (section->start == NULL) + return (const unsigned char *) _(""); + + if (offset >= section->size) + { + warn (_("DW_FORM_line_strp offset too big: %s\n"), + dwarf_vmatoa ("x", offset)); + return (const unsigned char *) _(""); + } + + ret = section->start + offset; + /* Unfortunately we cannot rely upon the .debug_line_str section ending + with a NUL byte. Since our caller is expecting to receive a well formed + C string we test for the lack of a terminating byte here. */ + if (strnlen ((const char *) ret, section->size - offset) + == section->size - offset) + ret = (const unsigned char *) + _(""); + + return ret; +} + +static const char * +fetch_indexed_string (dwarf_vma idx, struct cu_tu_set *this_set, + dwarf_vma offset_size, bfd_boolean dwo) +{ + enum dwarf_section_display_enum str_sec_idx = dwo ? str_dwo : str; + enum dwarf_section_display_enum idx_sec_idx = dwo ? str_index_dwo : str_index; + struct dwarf_section *index_section = &debug_displays [idx_sec_idx].section; + struct dwarf_section *str_section = &debug_displays [str_sec_idx].section; + dwarf_vma index_offset = idx * offset_size; + dwarf_vma str_offset; + const char * ret; + + if (index_section->start == NULL) + return (dwo ? _("") + : _("")); + + if (this_set != NULL) + index_offset += this_set->section_offsets [DW_SECT_STR_OFFSETS]; + if (index_offset >= index_section->size) + { + warn (_("DW_FORM_GNU_str_index offset too big: %s\n"), + dwarf_vmatoa ("x", index_offset)); + return _(""); + } + + if (str_section->start == NULL) + return (dwo ? _("") + : _("")); + + str_offset = byte_get (index_section->start + index_offset, offset_size); + str_offset -= str_section->address; + if (str_offset >= str_section->size) + { + warn (_("DW_FORM_GNU_str_index indirect offset too big: %s\n"), + dwarf_vmatoa ("x", str_offset)); + return _(""); + } + + ret = (const char *) str_section->start + str_offset; + /* Unfortunately we cannot rely upon str_section ending with a NUL byte. + Since our caller is expecting to receive a well formed C string we test + for the lack of a terminating byte here. */ + if (strnlen (ret, str_section->size - str_offset) + == str_section->size - str_offset) + ret = (const char *) _(""); + + return ret; +} + +static const char * +fetch_indexed_value (dwarf_vma offset, dwarf_vma bytes) +{ + struct dwarf_section *section = &debug_displays [debug_addr].section; + + if (section->start == NULL) + return (_("")); + + if (offset + bytes > section->size) + { + warn (_("Offset into section %s too big: %s\n"), + section->name, dwarf_vmatoa ("x", offset)); + return ""; } - return (const char *) section->start + offset; + return dwarf_vmatoa ("x", byte_get (section->start + offset, bytes)); } + /* FIXME: There are better and more efficient ways to handle these structures. For now though, I just want something that is simple to implement. */ @@ -425,6 +816,7 @@ typedef struct abbrev_attr { unsigned long attribute; unsigned long form; + bfd_signed_vma implicit_const; struct abbrev_attr *next; } abbrev_attr; @@ -494,7 +886,8 @@ add_abbrev (unsigned long number, unsigned long tag, int children) } static void -add_abbrev_attr (unsigned long attribute, unsigned long form) +add_abbrev_attr (unsigned long attribute, unsigned long form, + bfd_signed_vma implicit_const) { abbrev_attr *attr; @@ -505,6 +898,7 @@ add_abbrev_attr (unsigned long attribute, unsigned long form) attr->attribute = attribute; attr->form = form; + attr->implicit_const = implicit_const; attr->next = NULL; if (last_abbrev->first_attr == NULL) @@ -534,17 +928,21 @@ process_abbrev_section (unsigned char *start, unsigned char *end) unsigned long attribute; int children; - entry = read_leb128 (start, & bytes_read, 0); + entry = read_uleb128 (start, & bytes_read, end); start += bytes_read; /* A single zero is supposed to end the section according to the standard. If there's more, then signal that to the caller. */ + if (start == end) + return NULL; if (entry == 0) - return start == end ? NULL : start; + return start; - tag = read_leb128 (start, & bytes_read, 0); + tag = read_uleb128 (start, & bytes_read, end); start += bytes_read; + if (start == end) + return NULL; children = *start++; @@ -553,156 +951,106 @@ process_abbrev_section (unsigned char *start, unsigned char *end) do { unsigned long form; + /* Initialize it due to a false compiler warning. */ + bfd_signed_vma implicit_const = -1; - attribute = read_leb128 (start, & bytes_read, 0); + attribute = read_uleb128 (start, & bytes_read, end); start += bytes_read; + if (start == end) + break; - form = read_leb128 (start, & bytes_read, 0); + form = read_uleb128 (start, & bytes_read, end); start += bytes_read; + if (start == end) + break; + + if (form == DW_FORM_implicit_const) + { + implicit_const = read_sleb128 (start, & bytes_read, end); + start += bytes_read; + if (start == end) + break; + } - if (attribute != 0) - add_abbrev_attr (attribute, form); + add_abbrev_attr (attribute, form, implicit_const); } while (attribute != 0); } + /* Report the missing single zero which ends the section. */ + error (_(".debug_abbrev section not zero terminated\n")); + return NULL; } -static char * +static const char * get_TAG_name (unsigned long tag) { - switch (tag) - { - case DW_TAG_padding: return "DW_TAG_padding"; - case DW_TAG_array_type: return "DW_TAG_array_type"; - case DW_TAG_class_type: return "DW_TAG_class_type"; - case DW_TAG_entry_point: return "DW_TAG_entry_point"; - case DW_TAG_enumeration_type: return "DW_TAG_enumeration_type"; - case DW_TAG_formal_parameter: return "DW_TAG_formal_parameter"; - case DW_TAG_imported_declaration: return "DW_TAG_imported_declaration"; - case DW_TAG_label: return "DW_TAG_label"; - case DW_TAG_lexical_block: return "DW_TAG_lexical_block"; - case DW_TAG_member: return "DW_TAG_member"; - case DW_TAG_pointer_type: return "DW_TAG_pointer_type"; - case DW_TAG_reference_type: return "DW_TAG_reference_type"; - case DW_TAG_compile_unit: return "DW_TAG_compile_unit"; - case DW_TAG_string_type: return "DW_TAG_string_type"; - case DW_TAG_structure_type: return "DW_TAG_structure_type"; - case DW_TAG_subroutine_type: return "DW_TAG_subroutine_type"; - case DW_TAG_typedef: return "DW_TAG_typedef"; - case DW_TAG_union_type: return "DW_TAG_union_type"; - case DW_TAG_unspecified_parameters: return "DW_TAG_unspecified_parameters"; - case DW_TAG_variant: return "DW_TAG_variant"; - case DW_TAG_common_block: return "DW_TAG_common_block"; - case DW_TAG_common_inclusion: return "DW_TAG_common_inclusion"; - case DW_TAG_inheritance: return "DW_TAG_inheritance"; - case DW_TAG_inlined_subroutine: return "DW_TAG_inlined_subroutine"; - case DW_TAG_module: return "DW_TAG_module"; - case DW_TAG_ptr_to_member_type: return "DW_TAG_ptr_to_member_type"; - case DW_TAG_set_type: return "DW_TAG_set_type"; - case DW_TAG_subrange_type: return "DW_TAG_subrange_type"; - case DW_TAG_with_stmt: return "DW_TAG_with_stmt"; - case DW_TAG_access_declaration: return "DW_TAG_access_declaration"; - case DW_TAG_base_type: return "DW_TAG_base_type"; - case DW_TAG_catch_block: return "DW_TAG_catch_block"; - case DW_TAG_const_type: return "DW_TAG_const_type"; - case DW_TAG_constant: return "DW_TAG_constant"; - case DW_TAG_enumerator: return "DW_TAG_enumerator"; - case DW_TAG_file_type: return "DW_TAG_file_type"; - case DW_TAG_friend: return "DW_TAG_friend"; - case DW_TAG_namelist: return "DW_TAG_namelist"; - case DW_TAG_namelist_item: return "DW_TAG_namelist_item"; - case DW_TAG_packed_type: return "DW_TAG_packed_type"; - case DW_TAG_subprogram: return "DW_TAG_subprogram"; - case DW_TAG_template_type_param: return "DW_TAG_template_type_param"; - case DW_TAG_template_value_param: return "DW_TAG_template_value_param"; - case DW_TAG_thrown_type: return "DW_TAG_thrown_type"; - case DW_TAG_try_block: return "DW_TAG_try_block"; - case DW_TAG_variant_part: return "DW_TAG_variant_part"; - case DW_TAG_variable: return "DW_TAG_variable"; - case DW_TAG_volatile_type: return "DW_TAG_volatile_type"; - case DW_TAG_MIPS_loop: return "DW_TAG_MIPS_loop"; - case DW_TAG_format_label: return "DW_TAG_format_label"; - case DW_TAG_function_template: return "DW_TAG_function_template"; - case DW_TAG_class_template: return "DW_TAG_class_template"; - /* DWARF 2.1 values. */ - case DW_TAG_dwarf_procedure: return "DW_TAG_dwarf_procedure"; - case DW_TAG_restrict_type: return "DW_TAG_restrict_type"; - case DW_TAG_interface_type: return "DW_TAG_interface_type"; - case DW_TAG_namespace: return "DW_TAG_namespace"; - case DW_TAG_imported_module: return "DW_TAG_imported_module"; - case DW_TAG_unspecified_type: return "DW_TAG_unspecified_type"; - case DW_TAG_partial_unit: return "DW_TAG_partial_unit"; - case DW_TAG_imported_unit: return "DW_TAG_imported_unit"; - case DW_TAG_condition: return "DW_TAG_condition"; - case DW_TAG_shared_type: return "DW_TAG_shared_type"; - /* DWARF 4 values. */ - case DW_TAG_type_unit: return "DW_TAG_type_unit"; - case DW_TAG_rvalue_reference_type: return "DW_TAG_rvalue_reference_type"; - case DW_TAG_template_alias: return "DW_TAG_template_alias"; - /* UPC values. */ - case DW_TAG_upc_shared_type: return "DW_TAG_upc_shared_type"; - case DW_TAG_upc_strict_type: return "DW_TAG_upc_strict_type"; - case DW_TAG_upc_relaxed_type: return "DW_TAG_upc_relaxed_type"; - /* GNU values. */ - case DW_TAG_GNU_call_site: return "DW_TAG_GNU_call_site"; - case DW_TAG_GNU_call_site_parameter:return "DW_TAG_GNU_call_site_parameter"; - default: - { - static char buffer[100]; + const char *name = get_DW_TAG_name ((unsigned int) tag); - snprintf (buffer, sizeof (buffer), _("Unknown TAG value: %lx"), tag); - return buffer; - } + if (name == NULL) + { + static char buffer[100]; + + if (tag >= DW_TAG_lo_user && tag <= DW_TAG_hi_user) + snprintf (buffer, sizeof (buffer), _("User TAG value: %#lx"), tag); + else + snprintf (buffer, sizeof (buffer), _("Unknown TAG value: %#lx"), tag); + return buffer; } + + return name; } -static char * +static const char * get_FORM_name (unsigned long form) { - switch (form) + const char *name; + + if (form == 0) + return "DW_FORM value: 0"; + + name = get_DW_FORM_name (form); + if (name == NULL) { - case DW_FORM_addr: return "DW_FORM_addr"; - case DW_FORM_block2: return "DW_FORM_block2"; - case DW_FORM_block4: return "DW_FORM_block4"; - case DW_FORM_data2: return "DW_FORM_data2"; - case DW_FORM_data4: return "DW_FORM_data4"; - case DW_FORM_data8: return "DW_FORM_data8"; - case DW_FORM_string: return "DW_FORM_string"; - case DW_FORM_block: return "DW_FORM_block"; - case DW_FORM_block1: return "DW_FORM_block1"; - case DW_FORM_data1: return "DW_FORM_data1"; - case DW_FORM_flag: return "DW_FORM_flag"; - case DW_FORM_sdata: return "DW_FORM_sdata"; - case DW_FORM_strp: return "DW_FORM_strp"; - case DW_FORM_udata: return "DW_FORM_udata"; - case DW_FORM_ref_addr: return "DW_FORM_ref_addr"; - case DW_FORM_ref1: return "DW_FORM_ref1"; - case DW_FORM_ref2: return "DW_FORM_ref2"; - case DW_FORM_ref4: return "DW_FORM_ref4"; - case DW_FORM_ref8: return "DW_FORM_ref8"; - case DW_FORM_ref_udata: return "DW_FORM_ref_udata"; - case DW_FORM_indirect: return "DW_FORM_indirect"; - /* DWARF 4 values. */ - case DW_FORM_sec_offset: return "DW_FORM_sec_offset"; - case DW_FORM_exprloc: return "DW_FORM_exprloc"; - case DW_FORM_flag_present: return "DW_FORM_flag_present"; - case DW_FORM_ref_sig8: return "DW_FORM_ref_sig8"; - default: - { - static char buffer[100]; + static char buffer[100]; - snprintf (buffer, sizeof (buffer), _("Unknown FORM value: %lx"), form); - return buffer; - } + snprintf (buffer, sizeof (buffer), _("Unknown FORM value: %lx"), form); + return buffer; + } + + return name; +} + +static const char * +get_IDX_name (unsigned long idx) +{ + const char *name = get_DW_IDX_name ((unsigned int) idx); + + if (name == NULL) + { + static char buffer[100]; + + snprintf (buffer, sizeof (buffer), _("Unknown IDX value: %lx"), idx); + return buffer; } + + return name; } static unsigned char * -display_block (unsigned char *data, dwarf_vma length) +display_block (unsigned char *data, + dwarf_vma length, + const unsigned char * const end, char delimiter) { - printf (_(" %s byte block: "), dwarf_vmatoa ("u", length)); + dwarf_vma maxlen; + + printf (_("%c%s byte block: "), delimiter, dwarf_vmatoa ("u", length)); + if (data > end) + return (unsigned char *) end; + + maxlen = (dwarf_vma) (end - data); + length = length > maxlen ? maxlen : length; while (length --) printf ("%lx ", (unsigned long) byte_get (data++, 1)); @@ -722,6 +1070,7 @@ decode_location_expression (unsigned char * data, unsigned op; unsigned int bytes_read; dwarf_vma uvalue; + dwarf_signed_vma svalue; unsigned char *end = data + length; int need_frame_base = 0; @@ -732,53 +1081,56 @@ decode_location_expression (unsigned char * data, switch (op) { case DW_OP_addr: - printf ("DW_OP_addr: %s", - dwarf_vmatoa ("x", byte_get (data, pointer_size))); - data += pointer_size; + SAFE_BYTE_GET_AND_INC (uvalue, data, pointer_size, end); + printf ("DW_OP_addr: %s", dwarf_vmatoa ("x", uvalue)); break; case DW_OP_deref: printf ("DW_OP_deref"); break; case DW_OP_const1u: - printf ("DW_OP_const1u: %lu", (unsigned long) byte_get (data++, 1)); + SAFE_BYTE_GET_AND_INC (uvalue, data, 1, end); + printf ("DW_OP_const1u: %lu", (unsigned long) uvalue); break; case DW_OP_const1s: - printf ("DW_OP_const1s: %ld", (long) byte_get_signed (data++, 1)); + SAFE_SIGNED_BYTE_GET_AND_INC (svalue, data, 1, end); + printf ("DW_OP_const1s: %ld", (long) svalue); break; case DW_OP_const2u: - printf ("DW_OP_const2u: %lu", (unsigned long) byte_get (data, 2)); - data += 2; + SAFE_BYTE_GET_AND_INC (uvalue, data, 2, end); + printf ("DW_OP_const2u: %lu", (unsigned long) uvalue); break; case DW_OP_const2s: - printf ("DW_OP_const2s: %ld", (long) byte_get_signed (data, 2)); - data += 2; + SAFE_SIGNED_BYTE_GET_AND_INC (svalue, data, 2, end); + printf ("DW_OP_const2s: %ld", (long) svalue); break; case DW_OP_const4u: - printf ("DW_OP_const4u: %lu", (unsigned long) byte_get (data, 4)); - data += 4; + SAFE_BYTE_GET_AND_INC (uvalue, data, 4, end); + printf ("DW_OP_const4u: %lu", (unsigned long) uvalue); break; case DW_OP_const4s: - printf ("DW_OP_const4s: %ld", (long) byte_get_signed (data, 4)); - data += 4; + SAFE_SIGNED_BYTE_GET_AND_INC (svalue, data, 4, end); + printf ("DW_OP_const4s: %ld", (long) svalue); break; case DW_OP_const8u: - printf ("DW_OP_const8u: %lu %lu", (unsigned long) byte_get (data, 4), - (unsigned long) byte_get (data + 4, 4)); - data += 8; + SAFE_BYTE_GET_AND_INC (uvalue, data, 4, end); + printf ("DW_OP_const8u: %lu ", (unsigned long) uvalue); + SAFE_BYTE_GET_AND_INC (uvalue, data, 4, end); + printf ("%lu", (unsigned long) uvalue); break; case DW_OP_const8s: - printf ("DW_OP_const8s: %ld %ld", (long) byte_get (data, 4), - (long) byte_get (data + 4, 4)); - data += 8; + SAFE_SIGNED_BYTE_GET_AND_INC (svalue, data, 4, end); + printf ("DW_OP_const8s: %ld ", (long) svalue); + SAFE_SIGNED_BYTE_GET_AND_INC (svalue, data, 4, end); + printf ("%ld", (long) svalue); break; case DW_OP_constu: printf ("DW_OP_constu: %s", - dwarf_vmatoa ("u", read_leb128 (data, &bytes_read, 0))); + dwarf_vmatoa ("u", read_uleb128 (data, &bytes_read, end))); data += bytes_read; break; case DW_OP_consts: printf ("DW_OP_consts: %s", - dwarf_vmatoa ("d", read_sleb128 (data, &bytes_read))); + dwarf_vmatoa ("d", read_sleb128 (data, &bytes_read, end))); data += bytes_read; break; case DW_OP_dup: @@ -791,7 +1143,8 @@ decode_location_expression (unsigned char * data, printf ("DW_OP_over"); break; case DW_OP_pick: - printf ("DW_OP_pick: %ld", (unsigned long) byte_get (data++, 1)); + SAFE_BYTE_GET_AND_INC (uvalue, data, 1, end); + printf ("DW_OP_pick: %ld", (unsigned long) uvalue); break; case DW_OP_swap: printf ("DW_OP_swap"); @@ -834,7 +1187,7 @@ decode_location_expression (unsigned char * data, break; case DW_OP_plus_uconst: printf ("DW_OP_plus_uconst: %s", - dwarf_vmatoa ("u", read_leb128 (data, &bytes_read, 0))); + dwarf_vmatoa ("u", read_uleb128 (data, &bytes_read, end))); data += bytes_read; break; case DW_OP_shl: @@ -850,8 +1203,8 @@ decode_location_expression (unsigned char * data, printf ("DW_OP_xor"); break; case DW_OP_bra: - printf ("DW_OP_bra: %ld", (long) byte_get_signed (data, 2)); - data += 2; + SAFE_SIGNED_BYTE_GET_AND_INC (svalue, data, 2, end); + printf ("DW_OP_bra: %ld", (long) svalue); break; case DW_OP_eq: printf ("DW_OP_eq"); @@ -872,8 +1225,8 @@ decode_location_expression (unsigned char * data, printf ("DW_OP_ne"); break; case DW_OP_skip: - printf ("DW_OP_skip: %ld", (long) byte_get_signed (data, 2)); - data += 2; + SAFE_SIGNED_BYTE_GET_AND_INC (svalue, data, 2, end); + printf ("DW_OP_skip: %ld", (long) svalue); break; case DW_OP_lit0: @@ -982,13 +1335,12 @@ decode_location_expression (unsigned char * data, printf ("DW_OP_breg%d (%s): %s", op - DW_OP_breg0, regname (op - DW_OP_breg0, 1), - dwarf_vmatoa ("d", (dwarf_signed_vma) - read_leb128 (data, &bytes_read, 1))); + dwarf_vmatoa ("d", read_sleb128 (data, &bytes_read, end))); data += bytes_read; break; case DW_OP_regx: - uvalue = read_leb128 (data, &bytes_read, 0); + uvalue = read_uleb128 (data, &bytes_read, end); data += bytes_read; printf ("DW_OP_regx: %s (%s)", dwarf_vmatoa ("u", uvalue), regname (uvalue, 1)); @@ -996,27 +1348,29 @@ decode_location_expression (unsigned char * data, case DW_OP_fbreg: need_frame_base = 1; printf ("DW_OP_fbreg: %s", - dwarf_vmatoa ("d", read_sleb128 (data, &bytes_read))); + dwarf_vmatoa ("d", read_sleb128 (data, &bytes_read, end))); data += bytes_read; break; case DW_OP_bregx: - uvalue = read_leb128 (data, &bytes_read, 0); + uvalue = read_uleb128 (data, &bytes_read, end); data += bytes_read; printf ("DW_OP_bregx: %s (%s) %s", dwarf_vmatoa ("u", uvalue), regname (uvalue, 1), - dwarf_vmatoa ("d", read_sleb128 (data, &bytes_read))); + dwarf_vmatoa ("d", read_sleb128 (data, &bytes_read, end))); data += bytes_read; break; case DW_OP_piece: printf ("DW_OP_piece: %s", - dwarf_vmatoa ("u", read_leb128 (data, &bytes_read, 0))); + dwarf_vmatoa ("u", read_uleb128 (data, &bytes_read, end))); data += bytes_read; break; case DW_OP_deref_size: - printf ("DW_OP_deref_size: %ld", (long) byte_get (data++, 1)); + SAFE_BYTE_GET_AND_INC (uvalue, data, 1, end); + printf ("DW_OP_deref_size: %ld", (long) uvalue); break; case DW_OP_xderef_size: - printf ("DW_OP_xderef_size: %ld", (long) byte_get (data++, 1)); + SAFE_BYTE_GET_AND_INC (uvalue, data, 1, end); + printf ("DW_OP_xderef_size: %ld", (long) uvalue); break; case DW_OP_nop: printf ("DW_OP_nop"); @@ -1027,23 +1381,21 @@ decode_location_expression (unsigned char * data, printf ("DW_OP_push_object_address"); break; case DW_OP_call2: - /* XXX: Strictly speaking for 64-bit DWARF3 files + /* FIXME: Strictly speaking for 64-bit DWARF3 files this ought to be an 8-byte wide computation. */ + SAFE_SIGNED_BYTE_GET_AND_INC (svalue, data, 2, end); printf ("DW_OP_call2: <0x%s>", - dwarf_vmatoa ("x", (dwarf_signed_vma) byte_get (data, 2) - + cu_offset)); - data += 2; + dwarf_vmatoa ("x", svalue + cu_offset)); break; case DW_OP_call4: - /* XXX: Strictly speaking for 64-bit DWARF3 files + /* FIXME: Strictly speaking for 64-bit DWARF3 files this ought to be an 8-byte wide computation. */ + SAFE_SIGNED_BYTE_GET_AND_INC (svalue, data, 4, end); printf ("DW_OP_call4: <0x%s>", - dwarf_vmatoa ("x", (dwarf_signed_vma) byte_get (data, 4) - + cu_offset)); - data += 4; + dwarf_vmatoa ("x", svalue + cu_offset)); break; case DW_OP_call_ref: - /* XXX: Strictly speaking for 64-bit DWARF3 files + /* FIXME: Strictly speaking for 64-bit DWARF3 files this ought to be an 8-byte wide computation. */ if (dwarf_version == -1) { @@ -1053,16 +1405,13 @@ decode_location_expression (unsigned char * data, } if (dwarf_version == 2) { - printf ("DW_OP_call_ref: <0x%s>", - dwarf_vmatoa ("x", byte_get (data, pointer_size))); - data += pointer_size; + SAFE_BYTE_GET_AND_INC (uvalue, data, pointer_size, end); } else { - printf ("DW_OP_call_ref: <0x%s>", - dwarf_vmatoa ("x", byte_get (data, offset_size))); - data += offset_size; + SAFE_BYTE_GET_AND_INC (uvalue, data, offset_size, end); } + printf ("DW_OP_call_ref: <0x%s>", dwarf_vmatoa ("x", uvalue)); break; case DW_OP_form_tls_address: printf ("DW_OP_form_tls_address"); @@ -1072,11 +1421,11 @@ decode_location_expression (unsigned char * data, break; case DW_OP_bit_piece: printf ("DW_OP_bit_piece: "); - printf ("size: %s ", - dwarf_vmatoa ("u", read_leb128 (data, &bytes_read, 0))); + printf (_("size: %s "), + dwarf_vmatoa ("u", read_uleb128 (data, &bytes_read, end))); data += bytes_read; - printf ("offset: %s ", - dwarf_vmatoa ("u", read_leb128 (data, &bytes_read, 0))); + printf (_("offset: %s "), + dwarf_vmatoa ("u", read_uleb128 (data, &bytes_read, end))); data += bytes_read; break; @@ -1087,15 +1436,14 @@ decode_location_expression (unsigned char * data, case DW_OP_implicit_value: printf ("DW_OP_implicit_value"); - uvalue = read_leb128 (data, &bytes_read, 0); + uvalue = read_uleb128 (data, &bytes_read, end); data += bytes_read; - display_block (data, uvalue); - data += uvalue; + data = display_block (data, uvalue, end, ' '); break; /* GNU extensions. */ case DW_OP_GNU_push_tls_address: - printf ("DW_OP_GNU_push_tls_address or DW_OP_HP_unknown"); + printf (_("DW_OP_GNU_push_tls_address or DW_OP_HP_unknown")); break; case DW_OP_GNU_uninit: printf ("DW_OP_GNU_uninit"); @@ -1103,90 +1451,149 @@ decode_location_expression (unsigned char * data, break; case DW_OP_GNU_encoded_addr: { - int encoding; + int encoding = 0; dwarf_vma addr; - encoding = *data++; - addr = get_encoded_value (data, encoding, section); - data += size_of_encoded_value (encoding); + if (data < end) + encoding = *data++; + addr = get_encoded_value (&data, encoding, section, end); printf ("DW_OP_GNU_encoded_addr: fmt:%02x addr:", encoding); print_dwarf_vma (addr, pointer_size); } break; + case DW_OP_implicit_pointer: case DW_OP_GNU_implicit_pointer: - /* XXX: Strictly speaking for 64-bit DWARF3 files + /* FIXME: Strictly speaking for 64-bit DWARF3 files this ought to be an 8-byte wide computation. */ if (dwarf_version == -1) { - printf (_("(DW_OP_GNU_implicit_pointer in frame info)")); + printf (_("(%s in frame info)"), + (op == DW_OP_implicit_pointer + ? "DW_OP_implicit_pointer" + : "DW_OP_GNU_implicit_pointer")); /* No way to tell where the next op is, so just bail. */ return need_frame_base; } if (dwarf_version == 2) { - printf ("DW_OP_GNU_implicit_pointer: <0x%s> %s", - dwarf_vmatoa ("x", byte_get (data, pointer_size)), - dwarf_vmatoa ("d", read_sleb128 (data + pointer_size, - &bytes_read))); - data += pointer_size + bytes_read; + SAFE_BYTE_GET_AND_INC (uvalue, data, pointer_size, end); } else { - printf ("DW_OP_GNU_implicit_pointer: <0x%s> %s", - dwarf_vmatoa ("x", byte_get (data, offset_size)), - dwarf_vmatoa ("d", read_sleb128 (data + offset_size, - &bytes_read))); - data += offset_size + bytes_read; + SAFE_BYTE_GET_AND_INC (uvalue, data, offset_size, end); } + printf ("%s: <0x%s> %s", + (op == DW_OP_implicit_pointer + ? "DW_OP_implicit_pointer" : "DW_OP_GNU_implicit_pointer"), + dwarf_vmatoa ("x", uvalue), + dwarf_vmatoa ("d", read_sleb128 (data, + &bytes_read, end))); + data += bytes_read; break; + case DW_OP_entry_value: case DW_OP_GNU_entry_value: - uvalue = read_leb128 (data, &bytes_read, 0); + uvalue = read_uleb128 (data, &bytes_read, end); data += bytes_read; - printf ("DW_OP_GNU_entry_value: ("); + /* PR 17531: file: 0cc9cd00. */ + if (uvalue > (dwarf_vma) (end - data)) + uvalue = end - data; + printf ("%s: (", (op == DW_OP_entry_value ? "DW_OP_entry_value" + : "DW_OP_GNU_entry_value")); if (decode_location_expression (data, pointer_size, offset_size, dwarf_version, uvalue, cu_offset, section)) need_frame_base = 1; putchar (')'); data += uvalue; + if (data > end) + data = end; break; + case DW_OP_const_type: case DW_OP_GNU_const_type: - uvalue = read_leb128 (data, &bytes_read, 0); + uvalue = read_uleb128 (data, &bytes_read, end); data += bytes_read; - printf ("DW_OP_GNU_const_type: <0x%s> ", + printf ("%s: <0x%s> ", + (op == DW_OP_const_type ? "DW_OP_const_type" + : "DW_OP_GNU_const_type"), dwarf_vmatoa ("x", cu_offset + uvalue)); - uvalue = byte_get (data++, 1); - display_block (data, uvalue); - data += uvalue; + SAFE_BYTE_GET_AND_INC (uvalue, data, 1, end); + data = display_block (data, uvalue, end, ' '); break; + case DW_OP_regval_type: case DW_OP_GNU_regval_type: - uvalue = read_leb128 (data, &bytes_read, 0); + uvalue = read_uleb128 (data, &bytes_read, end); data += bytes_read; - printf ("DW_OP_GNU_regval_type: %s (%s)", + printf ("%s: %s (%s)", + (op == DW_OP_regval_type ? "DW_OP_regval_type" + : "DW_OP_GNU_regval_type"), dwarf_vmatoa ("u", uvalue), regname (uvalue, 1)); - uvalue = read_leb128 (data, &bytes_read, 0); + uvalue = read_uleb128 (data, &bytes_read, end); data += bytes_read; printf (" <0x%s>", dwarf_vmatoa ("x", cu_offset + uvalue)); break; + case DW_OP_deref_type: case DW_OP_GNU_deref_type: - printf ("DW_OP_GNU_deref_type: %ld", (long) byte_get (data++, 1)); - uvalue = read_leb128 (data, &bytes_read, 0); + SAFE_BYTE_GET_AND_INC (uvalue, data, 1, end); + printf ("%s: %ld", + (op == DW_OP_deref_type ? "DW_OP_deref_type" + : "DW_OP_GNU_deref_type"), + (long) uvalue); + uvalue = read_uleb128 (data, &bytes_read, end); data += bytes_read; printf (" <0x%s>", dwarf_vmatoa ("x", cu_offset + uvalue)); break; + case DW_OP_convert: case DW_OP_GNU_convert: - uvalue = read_leb128 (data, &bytes_read, 0); + uvalue = read_uleb128 (data, &bytes_read, end); data += bytes_read; - printf ("DW_OP_GNU_convert <0x%s>", - dwarf_vmatoa ("x", cu_offset + uvalue)); + printf ("%s <0x%s>", + (op == DW_OP_convert ? "DW_OP_convert" : "DW_OP_GNU_convert"), + dwarf_vmatoa ("x", uvalue ? cu_offset + uvalue : 0)); break; + case DW_OP_reinterpret: case DW_OP_GNU_reinterpret: - uvalue = read_leb128 (data, &bytes_read, 0); + uvalue = read_uleb128 (data, &bytes_read, end); data += bytes_read; - printf ("DW_OP_GNU_reinterpret <0x%s>", + printf ("%s <0x%s>", + (op == DW_OP_reinterpret ? "DW_OP_reinterpret" + : "DW_OP_GNU_reinterpret"), + dwarf_vmatoa ("x", uvalue ? cu_offset + uvalue : 0)); + break; + case DW_OP_GNU_parameter_ref: + SAFE_BYTE_GET_AND_INC (uvalue, data, 4, end); + printf ("DW_OP_GNU_parameter_ref: <0x%s>", dwarf_vmatoa ("x", cu_offset + uvalue)); break; + case DW_OP_GNU_addr_index: + uvalue = read_uleb128 (data, &bytes_read, end); + data += bytes_read; + printf ("DW_OP_GNU_addr_index <0x%s>", dwarf_vmatoa ("x", uvalue)); + break; + case DW_OP_GNU_const_index: + uvalue = read_uleb128 (data, &bytes_read, end); + data += bytes_read; + printf ("DW_OP_GNU_const_index <0x%s>", dwarf_vmatoa ("x", uvalue)); + break; + case DW_OP_GNU_variable_value: + /* FIXME: Strictly speaking for 64-bit DWARF3 files + this ought to be an 8-byte wide computation. */ + if (dwarf_version == -1) + { + printf (_("(DW_OP_GNU_variable_value in frame info)")); + /* No way to tell where the next op is, so just bail. */ + return need_frame_base; + } + if (dwarf_version == 2) + { + SAFE_BYTE_GET_AND_INC (uvalue, data, pointer_size, end); + } + else + { + SAFE_BYTE_GET_AND_INC (uvalue, data, offset_size, end); + } + printf ("DW_OP_GNU_variable_value: <0x%s>", dwarf_vmatoa ("x", uvalue)); + break; /* HP extensions. */ case DW_OP_HP_is_value: @@ -1226,9 +1633,9 @@ decode_location_expression (unsigned char * data, default: if (op >= DW_OP_lo_user && op <= DW_OP_hi_user) - printf (_("(User defined location op)")); + printf (_("(User defined location op 0x%x)"), op); else - printf (_("(Unknown location op)")); + printf (_("(Unknown location op 0x%x)"), op); /* No way to tell where the next op is, so just bail. */ return need_frame_base; } @@ -1241,105 +1648,250 @@ decode_location_expression (unsigned char * data, return need_frame_base; } -static unsigned char * -read_and_display_attr_value (unsigned long attribute, - unsigned long form, - unsigned char * data, - dwarf_vma cu_offset, - dwarf_vma pointer_size, - dwarf_vma offset_size, - int dwarf_version, - debug_info * debug_info_p, - int do_loc, - struct dwarf_section * section) +/* Find the CU or TU set corresponding to the given CU_OFFSET. + This is used for DWARF package files. */ + +static struct cu_tu_set * +find_cu_tu_set_v2 (dwarf_vma cu_offset, int do_types) { - dwarf_vma uvalue = 0; - unsigned char *block_start = NULL; - unsigned char * orig_data = data; - unsigned int bytes_read; + struct cu_tu_set *p; + unsigned int nsets; + unsigned int dw_sect; - switch (form) + if (do_types) { - default: - break; + p = tu_sets; + nsets = tu_count; + dw_sect = DW_SECT_TYPES; + } + else + { + p = cu_sets; + nsets = cu_count; + dw_sect = DW_SECT_INFO; + } + while (nsets > 0) + { + if (p->section_offsets [dw_sect] == cu_offset) + return p; + p++; + nsets--; + } + return NULL; +} - case DW_FORM_ref_addr: - if (dwarf_version == 2) - { - uvalue = byte_get (data, pointer_size); - data += pointer_size; - } - else if (dwarf_version == 3 || dwarf_version == 4) - { - uvalue = byte_get (data, offset_size); - data += offset_size; - } - else - error (_("Internal error: DWARF version is not 2, 3 or 4.\n")); +/* Add INC to HIGH_BITS:LOW_BITS. */ +static void +add64 (dwarf_vma * high_bits, dwarf_vma * low_bits, dwarf_vma inc) +{ + dwarf_vma tmp = * low_bits; - break; + tmp += inc; - case DW_FORM_addr: - uvalue = byte_get (data, pointer_size); - data += pointer_size; - break; + /* FIXME: There is probably a better way of handling this: - case DW_FORM_strp: - case DW_FORM_sec_offset: - uvalue = byte_get (data, offset_size); - data += offset_size; - break; + We need to cope with dwarf_vma being a 32-bit or 64-bit + type. Plus regardless of its size LOW_BITS is meant to + only hold 32-bits, so if there is overflow or wrap around + we must propagate into HIGH_BITS. */ + if (tmp < * low_bits) + { + ++ * high_bits; + } + else if (sizeof (tmp) > 8 + && (tmp >> 31) > 1) + { + ++ * high_bits; + tmp &= 0xFFFFFFFF; + } - case DW_FORM_flag_present: - uvalue = 1; - break; + * low_bits = tmp; +} - case DW_FORM_ref1: - case DW_FORM_flag: - case DW_FORM_data1: - uvalue = byte_get (data++, 1); - break; +static const char * +fetch_alt_indirect_string (dwarf_vma offset) +{ + struct dwarf_section * section; + const char * ret; - case DW_FORM_ref2: - case DW_FORM_data2: - uvalue = byte_get (data, 2); - data += 2; + if (! do_follow_links) + return ""; + + if (separate_debug_file == NULL) + return _(""); + + if (! load_debug_section (separate_debug_str, separate_debug_file)) + return _(""); + + section = &debug_displays [separate_debug_str].section; + if (section->start == NULL) + return _(""); + + if (offset >= section->size) + { + warn (_("DW_FORM_GNU_strp_alt offset too big: %s\n"), dwarf_vmatoa ("x", offset)); + return _(""); + } + + ret = (const char *) (section->start + offset); + /* Unfortunately we cannot rely upon the .debug_str section ending with a + NUL byte. Since our caller is expecting to receive a well formed C + string we test for the lack of a terminating byte here. */ + if (strnlen ((const char *) ret, section->size - offset) + == section->size - offset) + return _(""); + + return ret; +} + +static const char * +get_AT_name (unsigned long attribute) +{ + const char *name; + + if (attribute == 0) + return "DW_AT value: 0"; + + /* One value is shared by the MIPS and HP extensions: */ + if (attribute == DW_AT_MIPS_fde) + return "DW_AT_MIPS_fde or DW_AT_HP_unmodifiable"; + + name = get_DW_AT_name (attribute); + + if (name == NULL) + { + static char buffer[100]; + + snprintf (buffer, sizeof (buffer), _("Unknown AT value: %lx"), + attribute); + return buffer; + } + + return name; +} + +static unsigned char * +read_and_display_attr_value (unsigned long attribute, + unsigned long form, + dwarf_signed_vma implicit_const, + unsigned char * data, + unsigned char * end, + dwarf_vma cu_offset, + dwarf_vma pointer_size, + dwarf_vma offset_size, + int dwarf_version, + debug_info * debug_info_p, + int do_loc, + struct dwarf_section * section, + struct cu_tu_set * this_set, + char delimiter) +{ + dwarf_vma uvalue = 0; + unsigned char *block_start = NULL; + unsigned char * orig_data = data; + unsigned int bytes_read; + + if (data > end || (data == end && form != DW_FORM_flag_present)) + { + warn (_("Corrupt attribute\n")); + return data; + } + + switch (form) + { + default: + break; + + case DW_FORM_ref_addr: + if (dwarf_version == 2) + SAFE_BYTE_GET_AND_INC (uvalue, data, pointer_size, end); + else if (dwarf_version == 3 || dwarf_version == 4) + SAFE_BYTE_GET_AND_INC (uvalue, data, offset_size, end); + else + error (_("Internal error: DWARF version is not 2, 3 or 4.\n")); + + break; + + case DW_FORM_addr: + SAFE_BYTE_GET_AND_INC (uvalue, data, pointer_size, end); + break; + + case DW_FORM_strp: + case DW_FORM_line_strp: + case DW_FORM_sec_offset: + case DW_FORM_GNU_ref_alt: + case DW_FORM_GNU_strp_alt: + SAFE_BYTE_GET_AND_INC (uvalue, data, offset_size, end); + break; + + case DW_FORM_flag_present: + uvalue = 1; + break; + + case DW_FORM_ref1: + case DW_FORM_flag: + case DW_FORM_data1: + SAFE_BYTE_GET_AND_INC (uvalue, data, 1, end); + break; + + case DW_FORM_ref2: + case DW_FORM_data2: + SAFE_BYTE_GET_AND_INC (uvalue, data, 2, end); break; case DW_FORM_ref4: case DW_FORM_data4: - uvalue = byte_get (data, 4); - data += 4; + SAFE_BYTE_GET_AND_INC (uvalue, data, 4, end); break; case DW_FORM_sdata: - uvalue = read_leb128 (data, & bytes_read, 1); + uvalue = read_sleb128 (data, & bytes_read, end); + data += bytes_read; + break; + + case DW_FORM_GNU_str_index: + uvalue = read_uleb128 (data, & bytes_read, end); data += bytes_read; break; case DW_FORM_ref_udata: case DW_FORM_udata: - uvalue = read_leb128 (data, & bytes_read, 0); + uvalue = read_uleb128 (data, & bytes_read, end); data += bytes_read; break; case DW_FORM_indirect: - form = read_leb128 (data, & bytes_read, 0); + form = read_uleb128 (data, & bytes_read, end); data += bytes_read; if (!do_loc) - printf (" %s", get_FORM_name (form)); - return read_and_display_attr_value (attribute, form, data, - cu_offset, pointer_size, + printf ("%c%s", delimiter, get_FORM_name (form)); + if (form == DW_FORM_implicit_const) + { + implicit_const = read_sleb128 (data, & bytes_read, end); + data += bytes_read; + } + return read_and_display_attr_value (attribute, form, implicit_const, data, + end, cu_offset, pointer_size, offset_size, dwarf_version, debug_info_p, do_loc, - section); + section, this_set, delimiter); + case DW_FORM_GNU_addr_index: + uvalue = read_uleb128 (data, & bytes_read, end); + data += bytes_read; + break; } switch (form) { case DW_FORM_ref_addr: if (!do_loc) - printf (" <0x%s>", dwarf_vmatoa ("x",uvalue)); + printf ("%c<0x%s>", delimiter, dwarf_vmatoa ("x",uvalue)); + break; + + case DW_FORM_GNU_ref_alt: + if (!do_loc) + printf ("%c", delimiter, dwarf_vmatoa ("x",uvalue)); + /* FIXME: Follow the reference... */ break; case DW_FORM_ref1: @@ -1347,14 +1899,14 @@ read_and_display_attr_value (unsigned long attribute, case DW_FORM_ref4: case DW_FORM_ref_udata: if (!do_loc) - printf (" <0x%s>", dwarf_vmatoa ("x", uvalue + cu_offset)); + printf ("%c<0x%s>", delimiter, dwarf_vmatoa ("x", uvalue + cu_offset)); break; case DW_FORM_data4: case DW_FORM_addr: case DW_FORM_sec_offset: if (!do_loc) - printf (" 0x%s", dwarf_vmatoa ("x", uvalue)); + printf ("%c0x%s", delimiter, dwarf_vmatoa ("x", uvalue)); break; case DW_FORM_flag_present: @@ -1364,78 +1916,201 @@ read_and_display_attr_value (unsigned long attribute, case DW_FORM_sdata: case DW_FORM_udata: if (!do_loc) - printf (" %s", dwarf_vmatoa ("d", uvalue)); + printf ("%c%s", delimiter, dwarf_vmatoa ("d", uvalue)); + break; + + case DW_FORM_implicit_const: + if (!do_loc) + printf ("%c%s", delimiter, dwarf_vmatoa ("d", implicit_const)); break; case DW_FORM_ref8: case DW_FORM_data8: if (!do_loc) { - uvalue = byte_get (data, 4); - printf (" 0x%s", dwarf_vmatoa ("x", uvalue)); - printf (" 0x%lx", (unsigned long) byte_get (data + 4, 4)); + dwarf_vma high_bits; + dwarf_vma utmp; + char buf[64]; + + SAFE_BYTE_GET64 (data, &high_bits, &uvalue, end); + utmp = uvalue; + if (form == DW_FORM_ref8) + add64 (& high_bits, & utmp, cu_offset); + printf ("%c0x%s", delimiter, + dwarf_vmatoa64 (high_bits, utmp, buf, sizeof (buf))); } + if ((do_loc || do_debug_loc || do_debug_ranges) && num_debug_info_entries == 0) { if (sizeof (uvalue) == 8) - uvalue = byte_get (data, 8); + SAFE_BYTE_GET (uvalue, data, 8, end); else error (_("DW_FORM_data8 is unsupported when sizeof (dwarf_vma) != 8\n")); } + data += 8; break; + case DW_FORM_data16: + if (!do_loc) + { + dwarf_vma left_high_bits, left_low_bits; + dwarf_vma right_high_bits, right_low_bits; + + SAFE_BYTE_GET64 (data, &left_high_bits, &left_low_bits, end); + SAFE_BYTE_GET64 (data + 8, &right_high_bits, &right_low_bits, end); + if (byte_get == byte_get_little_endian) + { + /* Swap them. */ + left_high_bits ^= right_high_bits; + right_high_bits ^= left_high_bits; + left_high_bits ^= right_high_bits; + left_low_bits ^= right_low_bits; + right_low_bits ^= left_low_bits; + left_low_bits ^= right_low_bits; + } + printf (" 0x%08" DWARF_VMA_FMT "x%08" DWARF_VMA_FMT "x" + "%08" DWARF_VMA_FMT "x%08" DWARF_VMA_FMT "x", + left_high_bits, left_low_bits, right_high_bits, + right_low_bits); + } + data += 16; + break; + case DW_FORM_string: if (!do_loc) - printf (" %s", data); - data += strlen ((char *) data) + 1; + printf ("%c%.*s", delimiter, (int) (end - data), data); + data += strnlen ((char *) data, end - data) + 1; break; case DW_FORM_block: case DW_FORM_exprloc: - uvalue = read_leb128 (data, & bytes_read, 0); + uvalue = read_uleb128 (data, & bytes_read, end); block_start = data + bytes_read; + if (block_start >= end) + { + warn (_("Block ends prematurely\n")); + uvalue = 0; + block_start = end; + } + /* FIXME: Testing "(block_start + uvalue) < block_start" miscompiles with + gcc 4.8.3 running on an x86_64 host in 32-bit mode. So we pre-compute + block_start + uvalue here. */ + data = block_start + uvalue; + /* PR 17512: file: 008-103549-0.001:0.1. */ + if (block_start + uvalue > end || data < block_start) + { + warn (_("Corrupt attribute block length: %lx\n"), (long) uvalue); + uvalue = end - block_start; + } if (do_loc) data = block_start + uvalue; else - data = display_block (block_start, uvalue); + data = display_block (block_start, uvalue, end, delimiter); break; case DW_FORM_block1: - uvalue = byte_get (data, 1); + SAFE_BYTE_GET (uvalue, data, 1, end); block_start = data + 1; + if (block_start >= end) + { + warn (_("Block ends prematurely\n")); + uvalue = 0; + block_start = end; + } + data = block_start + uvalue; + if (block_start + uvalue > end || data < block_start) + { + warn (_("Corrupt attribute block length: %lx\n"), (long) uvalue); + uvalue = end - block_start; + } if (do_loc) data = block_start + uvalue; else - data = display_block (block_start, uvalue); + data = display_block (block_start, uvalue, end, delimiter); break; case DW_FORM_block2: - uvalue = byte_get (data, 2); + SAFE_BYTE_GET (uvalue, data, 2, end); block_start = data + 2; + if (block_start >= end) + { + warn (_("Block ends prematurely\n")); + uvalue = 0; + block_start = end; + } + data = block_start + uvalue; + if (block_start + uvalue > end || data < block_start) + { + warn (_("Corrupt attribute block length: %lx\n"), (long) uvalue); + uvalue = end - block_start; + } if (do_loc) data = block_start + uvalue; else - data = display_block (block_start, uvalue); + data = display_block (block_start, uvalue, end, delimiter); break; case DW_FORM_block4: - uvalue = byte_get (data, 4); + SAFE_BYTE_GET (uvalue, data, 4, end); block_start = data + 4; + /* PR 17512: file: 3371-3907-0.004. */ + if (block_start >= end) + { + warn (_("Block ends prematurely\n")); + uvalue = 0; + block_start = end; + } + data = block_start + uvalue; + if (block_start + uvalue > end + /* PR 17531: file: 5b5f0592. */ + || data < block_start) + { + warn (_("Corrupt attribute block length: %lx\n"), (long) uvalue); + uvalue = end - block_start; + } if (do_loc) data = block_start + uvalue; else - data = display_block (block_start, uvalue); + data = display_block (block_start, uvalue, end, delimiter); break; case DW_FORM_strp: if (!do_loc) - printf (_(" (indirect string, offset: 0x%s): %s"), + printf (_("%c(indirect string, offset: 0x%s): %s"), delimiter, dwarf_vmatoa ("x", uvalue), fetch_indirect_string (uvalue)); break; + case DW_FORM_line_strp: + if (!do_loc) + printf (_("%c(indirect line string, offset: 0x%s): %s"), delimiter, + dwarf_vmatoa ("x", uvalue), + fetch_indirect_line_string (uvalue)); + break; + + case DW_FORM_GNU_str_index: + if (!do_loc) + { + const char * suffix = strrchr (section->name, '.'); + bfd_boolean dwo = (suffix && strcmp (suffix, ".dwo") == 0) ? TRUE : FALSE; + + printf (_("%c(indexed string: 0x%s): %s"), delimiter, + dwarf_vmatoa ("x", uvalue), + fetch_indexed_string (uvalue, this_set, offset_size, dwo)); + } + break; + + case DW_FORM_GNU_strp_alt: + if (!do_loc) + { + printf (_("%c(alt indirect string, offset: 0x%s) %s"), delimiter, + dwarf_vmatoa ("x", uvalue), + fetch_alt_indirect_string (uvalue)); + } + break; + case DW_FORM_indirect: /* Handled above. */ break; @@ -1443,16 +2118,21 @@ read_and_display_attr_value (unsigned long attribute, case DW_FORM_ref_sig8: if (!do_loc) { - int i; - printf (" signature: "); - for (i = 0; i < 8; i++) - { - printf ("%02x", (unsigned) byte_get (data, 1)); - data += 1; - } + dwarf_vma high_bits; + char buf[64]; + + SAFE_BYTE_GET64 (data, &high_bits, &uvalue, end); + printf ("%csignature: 0x%s", delimiter, + dwarf_vmatoa64 (high_bits, uvalue, buf, sizeof (buf))); } - else - data += 8; + data += 8; + break; + + case DW_FORM_GNU_addr_index: + if (!do_loc) + printf (_("%c(addr_index: 0x%s): %s"), delimiter, + dwarf_vmatoa ("x", uvalue), + fetch_indexed_value (uvalue * pointer_size, pointer_size)); break; default: @@ -1468,7 +2148,9 @@ read_and_display_attr_value (unsigned long attribute, { case DW_AT_frame_base: have_frame_base = 1; + /* Fall through. */ case DW_AT_location: + case DW_AT_GNU_locviews: case DW_AT_string_length: case DW_AT_return_addr: case DW_AT_data_member_location: @@ -1476,12 +2158,16 @@ read_and_display_attr_value (unsigned long attribute, case DW_AT_segment: case DW_AT_static_link: case DW_AT_use_location: + case DW_AT_call_value: case DW_AT_GNU_call_site_value: + case DW_AT_call_data_value: case DW_AT_GNU_call_site_data_value: + case DW_AT_call_target: case DW_AT_GNU_call_site_target: + case DW_AT_call_target_clobbered: case DW_AT_GNU_call_site_target_clobbered: - if (form == DW_FORM_data4 - || form == DW_FORM_data8 + if ((dwarf_version < 4 + && (form == DW_FORM_data4 || form == DW_FORM_data8)) || form == DW_FORM_sec_offset) { /* Process location list. */ @@ -1492,16 +2178,44 @@ read_and_display_attr_value (unsigned long attribute, { lmax += 1024; debug_info_p->loc_offsets = (dwarf_vma *) - xcrealloc (debug_info_p->loc_offsets, - lmax, sizeof (*debug_info_p->loc_offsets)); + xcrealloc (debug_info_p->loc_offsets, + lmax, sizeof (*debug_info_p->loc_offsets)); + debug_info_p->loc_views = (dwarf_vma *) + xcrealloc (debug_info_p->loc_views, + lmax, sizeof (*debug_info_p->loc_views)); debug_info_p->have_frame_base = (int *) - xcrealloc (debug_info_p->have_frame_base, - lmax, sizeof (*debug_info_p->have_frame_base)); + xcrealloc (debug_info_p->have_frame_base, + lmax, sizeof (*debug_info_p->have_frame_base)); debug_info_p->max_loc_offsets = lmax; } - debug_info_p->loc_offsets [num] = uvalue; + if (this_set != NULL) + uvalue += this_set->section_offsets [DW_SECT_LOC]; debug_info_p->have_frame_base [num] = have_frame_base; - debug_info_p->num_loc_offsets++; + if (attribute != DW_AT_GNU_locviews) + { + /* Corrupt DWARF info can produce more offsets than views. + See PR 23062 for an example. */ + if (debug_info_p->num_loc_offsets + > debug_info_p->num_loc_views) + warn (_("More location offset attributes than DW_AT_GNU_locview attributes\n")); + else + { + debug_info_p->loc_offsets [num] = uvalue; + debug_info_p->num_loc_offsets++; + } + } + else + { + assert (debug_info_p->num_loc_views <= num); + num = debug_info_p->num_loc_views; + if (num > debug_info_p->num_loc_offsets) + warn (_("More DW_AT_GNU_locview attributes than location offset attributes\n")); + else + { + debug_info_p->loc_views [num] = uvalue; + debug_info_p->num_loc_views++; + } + } } break; @@ -1510,9 +2224,17 @@ read_and_display_attr_value (unsigned long attribute, debug_info_p->base_address = uvalue; break; + case DW_AT_GNU_addr_base: + debug_info_p->addr_base = uvalue; + break; + + case DW_AT_GNU_ranges_base: + debug_info_p->ranges_base = uvalue; + break; + case DW_AT_ranges: - if (form == DW_FORM_data4 - || form == DW_FORM_data8 + if ((dwarf_version < 4 + && (form == DW_FORM_data4 || form == DW_FORM_data8)) || form == DW_FORM_sec_offset) { /* Process range list. */ @@ -1523,8 +2245,8 @@ read_and_display_attr_value (unsigned long attribute, { lmax += 1024; debug_info_p->range_lists = (dwarf_vma *) - xcrealloc (debug_info_p->range_lists, - lmax, sizeof (*debug_info_p->range_lists)); + xcrealloc (debug_info_p->range_lists, + lmax, sizeof (*debug_info_p->range_lists)); debug_info_p->max_range_lists = lmax; } debug_info_p->range_lists [num] = uvalue; @@ -1532,20 +2254,82 @@ read_and_display_attr_value (unsigned long attribute, } break; + case DW_AT_GNU_dwo_name: + case DW_AT_dwo_name: + if (need_dwo_info) + switch (form) + { + case DW_FORM_strp: + dwo_name = (const char *) fetch_indirect_string (uvalue); + break; + case DW_FORM_GNU_str_index: + dwo_name = fetch_indexed_string (uvalue, this_set, offset_size, FALSE); + break; + case DW_FORM_string: + dwo_name = (const char *) orig_data; + break; + default: + warn (_("Unsupported form (%s) for attribute %s\n"), + get_FORM_name (form), get_AT_name (attribute)); + dwo_name = _(""); + break; + } + break; + + case DW_AT_comp_dir: + /* FIXME: Also extract a build-id in a CU/TU. */ + if (need_dwo_info) + switch (form) + { + case DW_FORM_strp: + dwo_dir = (const char *) fetch_indirect_string (uvalue); + break; + case DW_FORM_line_strp: + dwo_dir = (const char *) fetch_indirect_line_string (uvalue); + break; + case DW_FORM_GNU_str_index: + dwo_dir = fetch_indexed_string (uvalue, this_set, offset_size, FALSE); + break; + case DW_FORM_string: + dwo_dir = (const char *) orig_data; + break; + default: + warn (_("Unsupported form (%s) for attribute %s\n"), + get_FORM_name (form), get_AT_name (attribute)); + dwo_dir = _(""); + break; + } + break; + + case DW_AT_GNU_dwo_id: + if (need_dwo_info) + switch (form) + { + case DW_FORM_data8: + dwo_id = data - 8; + dwo_id_len = 8; + break; + default: + warn (_("Unsupported form (%s) for attribute %s\n"), + get_FORM_name (form), get_AT_name (attribute)); + dwo_id = NULL; + break; + } + break; + default: break; } } - if (do_loc) + if (do_loc || attribute == 0) return data; /* For some attributes we can display further information. */ - printf ("\t"); - switch (attribute) { case DW_AT_inline: + printf ("\t"); switch (uvalue) { case DW_INL_not_inlined: @@ -1568,6 +2352,7 @@ read_and_display_attr_value (unsigned long attribute, break; case DW_AT_language: + printf ("\t"); switch (uvalue) { /* Ordered by the numeric value of these constants. */ @@ -1594,21 +2379,39 @@ read_and_display_attr_value (unsigned long attribute, case DW_LANG_D: printf ("(D)"); break; /* DWARF 4 values. */ case DW_LANG_Python: printf ("(Python)"); break; + /* DWARF 5 values. */ + case DW_LANG_OpenCL: printf ("(OpenCL)"); break; + case DW_LANG_Go: printf ("(Go)"); break; + case DW_LANG_Modula3: printf ("(Modula 3)"); break; + case DW_LANG_Haskell: printf ("(Haskell)"); break; + case DW_LANG_C_plus_plus_03: printf ("(C++03)"); break; + case DW_LANG_C_plus_plus_11: printf ("(C++11)"); break; + case DW_LANG_OCaml: printf ("(OCaml)"); break; + case DW_LANG_Rust: printf ("(Rust)"); break; + case DW_LANG_C11: printf ("(C11)"); break; + case DW_LANG_Swift: printf ("(Swift)"); break; + case DW_LANG_Julia: printf ("(Julia)"); break; + case DW_LANG_Dylan: printf ("(Dylan)"); break; + case DW_LANG_C_plus_plus_14: printf ("(C++14)"); break; + case DW_LANG_Fortran03: printf ("(Fortran 03)"); break; + case DW_LANG_Fortran08: printf ("(Fortran 08)"); break; + case DW_LANG_RenderScript: printf ("(RenderScript)"); break; /* MIPS extension. */ case DW_LANG_Mips_Assembler: printf ("(MIPS assembler)"); break; /* UPC extension. */ case DW_LANG_Upc: printf ("(Unified Parallel C)"); break; default: if (uvalue >= DW_LANG_lo_user && uvalue <= DW_LANG_hi_user) - printf ("(implementation defined: %s)", + printf (_("(implementation defined: %s)"), dwarf_vmatoa ("x", uvalue)); else - printf ("(Unknown: %s)", dwarf_vmatoa ("x", uvalue)); + printf (_("(Unknown: %s)"), dwarf_vmatoa ("x", uvalue)); break; } break; case DW_AT_encoding: + printf ("\t"); switch (uvalue) { case DW_ATE_void: printf ("(void)"); break; @@ -1629,6 +2432,12 @@ read_and_display_attr_value (unsigned long attribute, case DW_ATE_edited: printf ("(edited)"); break; case DW_ATE_signed_fixed: printf ("(signed_fixed)"); break; case DW_ATE_unsigned_fixed: printf ("(unsigned_fixed)"); break; + /* DWARF 4 values: */ + case DW_ATE_UTF: printf ("(unicode string)"); break; + /* DWARF 5 values: */ + case DW_ATE_UCS: printf ("(UCS)"); break; + case DW_ATE_ASCII: printf ("(ASCII)"); break; + /* HP extensions: */ case DW_ATE_HP_float80: printf ("(HP_float80)"); break; case DW_ATE_HP_complex_float80: printf ("(HP_complex_float80)"); break; @@ -1641,82 +2450,144 @@ read_and_display_attr_value (unsigned long attribute, default: if (uvalue >= DW_ATE_lo_user && uvalue <= DW_ATE_hi_user) - printf ("(user defined type)"); + printf (_("(user defined type)")); else - printf ("(unknown type)"); + printf (_("(unknown type)")); break; } break; case DW_AT_accessibility: + printf ("\t"); switch (uvalue) { case DW_ACCESS_public: printf ("(public)"); break; case DW_ACCESS_protected: printf ("(protected)"); break; case DW_ACCESS_private: printf ("(private)"); break; default: - printf ("(unknown accessibility)"); + printf (_("(unknown accessibility)")); break; } break; case DW_AT_visibility: + printf ("\t"); switch (uvalue) { case DW_VIS_local: printf ("(local)"); break; case DW_VIS_exported: printf ("(exported)"); break; case DW_VIS_qualified: printf ("(qualified)"); break; - default: printf ("(unknown visibility)"); break; + default: printf (_("(unknown visibility)")); break; + } + break; + + case DW_AT_endianity: + printf ("\t"); + switch (uvalue) + { + case DW_END_default: printf ("(default)"); break; + case DW_END_big: printf ("(big)"); break; + case DW_END_little: printf ("(little)"); break; + default: + if (uvalue >= DW_END_lo_user && uvalue <= DW_END_hi_user) + printf (_("(user specified)")); + else + printf (_("(unknown endianity)")); + break; } break; case DW_AT_virtuality: + printf ("\t"); switch (uvalue) { case DW_VIRTUALITY_none: printf ("(none)"); break; case DW_VIRTUALITY_virtual: printf ("(virtual)"); break; case DW_VIRTUALITY_pure_virtual:printf ("(pure_virtual)"); break; - default: printf ("(unknown virtuality)"); break; + default: printf (_("(unknown virtuality)")); break; } break; case DW_AT_identifier_case: + printf ("\t"); switch (uvalue) { case DW_ID_case_sensitive: printf ("(case_sensitive)"); break; case DW_ID_up_case: printf ("(up_case)"); break; case DW_ID_down_case: printf ("(down_case)"); break; case DW_ID_case_insensitive: printf ("(case_insensitive)"); break; - default: printf ("(unknown case)"); break; + default: printf (_("(unknown case)")); break; } break; case DW_AT_calling_convention: + printf ("\t"); switch (uvalue) { case DW_CC_normal: printf ("(normal)"); break; case DW_CC_program: printf ("(program)"); break; case DW_CC_nocall: printf ("(nocall)"); break; + case DW_CC_pass_by_reference: printf ("(pass by ref)"); break; + case DW_CC_pass_by_value: printf ("(pass by value)"); break; + case DW_CC_GNU_renesas_sh: printf ("(Rensas SH)"); break; + case DW_CC_GNU_borland_fastcall_i386: printf ("(Borland fastcall i386)"); break; default: if (uvalue >= DW_CC_lo_user && uvalue <= DW_CC_hi_user) - printf ("(user defined)"); + printf (_("(user defined)")); else - printf ("(unknown convention)"); + printf (_("(unknown convention)")); } break; case DW_AT_ordering: + printf ("\t"); switch (uvalue) { - case -1: printf ("(undefined)"); break; + case 255: + case -1: printf (_("(undefined)")); break; case 0: printf ("(row major)"); break; case 1: printf ("(column major)"); break; } break; + case DW_AT_decimal_sign: + printf ("\t"); + switch (uvalue) + { + case DW_DS_unsigned: printf (_("(unsigned)")); break; + case DW_DS_leading_overpunch: printf (_("(leading overpunch)")); break; + case DW_DS_trailing_overpunch: printf (_("(trailing overpunch)")); break; + case DW_DS_leading_separate: printf (_("(leading separate)")); break; + case DW_DS_trailing_separate: printf (_("(trailing separate)")); break; + default: printf (_("(unrecognised)")); break; + } + break; + + case DW_AT_defaulted: + printf ("\t"); + switch (uvalue) + { + case DW_DEFAULTED_no: printf (_("(no)")); break; + case DW_DEFAULTED_in_class: printf (_("(in class)")); break; + case DW_DEFAULTED_out_of_class: printf (_("(out of class)")); break; + default: printf (_("(unrecognised)")); break; + } + break; + + case DW_AT_discr_list: + printf ("\t"); + switch (uvalue) + { + case DW_DSC_label: printf (_("(label)")); break; + case DW_DSC_range: printf (_("(range)")); break; + default: printf (_("(unrecognised)")); break; + } + break; + case DW_AT_frame_base: have_frame_base = 1; + /* Fall through. */ case DW_AT_location: case DW_AT_string_length: case DW_AT_return_addr: @@ -1725,14 +2596,18 @@ read_and_display_attr_value (unsigned long attribute, case DW_AT_segment: case DW_AT_static_link: case DW_AT_use_location: + case DW_AT_call_value: case DW_AT_GNU_call_site_value: + case DW_AT_call_data_value: case DW_AT_GNU_call_site_data_value: + case DW_AT_call_target: case DW_AT_GNU_call_site_target: + case DW_AT_call_target_clobbered: case DW_AT_GNU_call_site_target_clobbered: - if (form == DW_FORM_data4 - || form == DW_FORM_data8 + if ((dwarf_version < 4 + && (form == DW_FORM_data4 || form == DW_FORM_data8)) || form == DW_FORM_sec_offset) - printf (_("(location list)")); + printf (_(" (location list)")); /* Fall through. */ case DW_AT_allocated: case DW_AT_associated: @@ -1744,7 +2619,7 @@ read_and_display_attr_value (unsigned long attribute, { int need_frame_base; - printf ("("); + printf ("\t("); need_frame_base = decode_location_expression (block_start, pointer_size, offset_size, @@ -1757,18 +2632,36 @@ read_and_display_attr_value (unsigned long attribute, } break; + case DW_AT_data_bit_offset: + case DW_AT_byte_size: + case DW_AT_bit_size: + case DW_AT_string_length_byte_size: + case DW_AT_string_length_bit_size: + case DW_AT_bit_stride: + if (form == DW_FORM_exprloc) + { + printf ("\t("); + (void) decode_location_expression (block_start, pointer_size, + offset_size, dwarf_version, + uvalue, cu_offset, section); + printf (")"); + } + break; + case DW_AT_import: { - if (form == DW_FORM_ref_sig8) - break; + if (form == DW_FORM_ref_sig8 + || form == DW_FORM_GNU_ref_alt) + break; if (form == DW_FORM_ref1 || form == DW_FORM_ref2 - || form == DW_FORM_ref4) + || form == DW_FORM_ref4 + || form == DW_FORM_ref_udata) uvalue += cu_offset; if (uvalue >= section->size) - warn (_("Offset %s used as value for DW_AT_import attribute of DIE at offset %lx is too big.\n"), + warn (_("Offset %s used as value for DW_AT_import attribute of DIE at offset 0x%lx is too big.\n"), dwarf_vmatoa ("x", uvalue), (unsigned long) (orig_data - section->start)); else @@ -1776,14 +2669,20 @@ read_and_display_attr_value (unsigned long attribute, unsigned long abbrev_number; abbrev_entry * entry; - abbrev_number = read_leb128 (section->start + uvalue, NULL, 0); + abbrev_number = read_uleb128 (section->start + uvalue, NULL, end); - printf ("[Abbrev Number: %ld", abbrev_number); - for (entry = first_abbrev; entry != NULL; entry = entry->next) - if (entry->entry == abbrev_number) - break; - if (entry != NULL) - printf (" (%s)", get_TAG_name (entry->tag)); + printf (_("\t[Abbrev Number: %ld"), abbrev_number); + /* Don't look up abbrev for DW_FORM_ref_addr, as it very often will + use different abbrev table, and we don't track .debug_info chunks + yet. */ + if (form != DW_FORM_ref_addr) + { + for (entry = first_abbrev; entry != NULL; entry = entry->next) + if (entry->entry == abbrev_number) + break; + if (entry != NULL) + printf (" (%s)", get_TAG_name (entry->tag)); + } printf ("]"); } } @@ -1796,220 +2695,98 @@ read_and_display_attr_value (unsigned long attribute, return data; } -static char * -get_AT_name (unsigned long attribute) -{ - switch (attribute) - { - case DW_AT_sibling: return "DW_AT_sibling"; - case DW_AT_location: return "DW_AT_location"; - case DW_AT_name: return "DW_AT_name"; - case DW_AT_ordering: return "DW_AT_ordering"; - case DW_AT_subscr_data: return "DW_AT_subscr_data"; - case DW_AT_byte_size: return "DW_AT_byte_size"; - case DW_AT_bit_offset: return "DW_AT_bit_offset"; - case DW_AT_bit_size: return "DW_AT_bit_size"; - case DW_AT_element_list: return "DW_AT_element_list"; - case DW_AT_stmt_list: return "DW_AT_stmt_list"; - case DW_AT_low_pc: return "DW_AT_low_pc"; - case DW_AT_high_pc: return "DW_AT_high_pc"; - case DW_AT_language: return "DW_AT_language"; - case DW_AT_member: return "DW_AT_member"; - case DW_AT_discr: return "DW_AT_discr"; - case DW_AT_discr_value: return "DW_AT_discr_value"; - case DW_AT_visibility: return "DW_AT_visibility"; - case DW_AT_import: return "DW_AT_import"; - case DW_AT_string_length: return "DW_AT_string_length"; - case DW_AT_common_reference: return "DW_AT_common_reference"; - case DW_AT_comp_dir: return "DW_AT_comp_dir"; - case DW_AT_const_value: return "DW_AT_const_value"; - case DW_AT_containing_type: return "DW_AT_containing_type"; - case DW_AT_default_value: return "DW_AT_default_value"; - case DW_AT_inline: return "DW_AT_inline"; - case DW_AT_is_optional: return "DW_AT_is_optional"; - case DW_AT_lower_bound: return "DW_AT_lower_bound"; - case DW_AT_producer: return "DW_AT_producer"; - case DW_AT_prototyped: return "DW_AT_prototyped"; - case DW_AT_return_addr: return "DW_AT_return_addr"; - case DW_AT_start_scope: return "DW_AT_start_scope"; - case DW_AT_stride_size: return "DW_AT_stride_size"; - case DW_AT_upper_bound: return "DW_AT_upper_bound"; - case DW_AT_abstract_origin: return "DW_AT_abstract_origin"; - case DW_AT_accessibility: return "DW_AT_accessibility"; - case DW_AT_address_class: return "DW_AT_address_class"; - case DW_AT_artificial: return "DW_AT_artificial"; - case DW_AT_base_types: return "DW_AT_base_types"; - case DW_AT_calling_convention: return "DW_AT_calling_convention"; - case DW_AT_count: return "DW_AT_count"; - case DW_AT_data_member_location: return "DW_AT_data_member_location"; - case DW_AT_decl_column: return "DW_AT_decl_column"; - case DW_AT_decl_file: return "DW_AT_decl_file"; - case DW_AT_decl_line: return "DW_AT_decl_line"; - case DW_AT_declaration: return "DW_AT_declaration"; - case DW_AT_discr_list: return "DW_AT_discr_list"; - case DW_AT_encoding: return "DW_AT_encoding"; - case DW_AT_external: return "DW_AT_external"; - case DW_AT_frame_base: return "DW_AT_frame_base"; - case DW_AT_friend: return "DW_AT_friend"; - case DW_AT_identifier_case: return "DW_AT_identifier_case"; - case DW_AT_macro_info: return "DW_AT_macro_info"; - case DW_AT_namelist_items: return "DW_AT_namelist_items"; - case DW_AT_priority: return "DW_AT_priority"; - case DW_AT_segment: return "DW_AT_segment"; - case DW_AT_specification: return "DW_AT_specification"; - case DW_AT_static_link: return "DW_AT_static_link"; - case DW_AT_type: return "DW_AT_type"; - case DW_AT_use_location: return "DW_AT_use_location"; - case DW_AT_variable_parameter: return "DW_AT_variable_parameter"; - case DW_AT_virtuality: return "DW_AT_virtuality"; - case DW_AT_vtable_elem_location: return "DW_AT_vtable_elem_location"; - /* DWARF 2.1 values. */ - case DW_AT_allocated: return "DW_AT_allocated"; - case DW_AT_associated: return "DW_AT_associated"; - case DW_AT_data_location: return "DW_AT_data_location"; - case DW_AT_stride: return "DW_AT_stride"; - case DW_AT_entry_pc: return "DW_AT_entry_pc"; - case DW_AT_use_UTF8: return "DW_AT_use_UTF8"; - case DW_AT_extension: return "DW_AT_extension"; - case DW_AT_ranges: return "DW_AT_ranges"; - case DW_AT_trampoline: return "DW_AT_trampoline"; - case DW_AT_call_column: return "DW_AT_call_column"; - case DW_AT_call_file: return "DW_AT_call_file"; - case DW_AT_call_line: return "DW_AT_call_line"; - case DW_AT_description: return "DW_AT_description"; - case DW_AT_binary_scale: return "DW_AT_binary_scale"; - case DW_AT_decimal_scale: return "DW_AT_decimal_scale"; - case DW_AT_small: return "DW_AT_small"; - case DW_AT_decimal_sign: return "DW_AT_decimal_sign"; - case DW_AT_digit_count: return "DW_AT_digit_count"; - case DW_AT_picture_string: return "DW_AT_picture_string"; - case DW_AT_mutable: return "DW_AT_mutable"; - case DW_AT_threads_scaled: return "DW_AT_threads_scaled"; - case DW_AT_explicit: return "DW_AT_explicit"; - case DW_AT_object_pointer: return "DW_AT_object_pointer"; - case DW_AT_endianity: return "DW_AT_endianity"; - case DW_AT_elemental: return "DW_AT_elemental"; - case DW_AT_pure: return "DW_AT_pure"; - case DW_AT_recursive: return "DW_AT_recursive"; - /* DWARF 4 values. */ - case DW_AT_signature: return "DW_AT_signature"; - case DW_AT_main_subprogram: return "DW_AT_main_subprogram"; - case DW_AT_data_bit_offset: return "DW_AT_data_bit_offset"; - case DW_AT_const_expr: return "DW_AT_const_expr"; - case DW_AT_enum_class: return "DW_AT_enum_class"; - case DW_AT_linkage_name: return "DW_AT_linkage_name"; - - /* HP and SGI/MIPS extensions. */ - case DW_AT_MIPS_loop_begin: return "DW_AT_MIPS_loop_begin"; - case DW_AT_MIPS_tail_loop_begin: return "DW_AT_MIPS_tail_loop_begin"; - case DW_AT_MIPS_epilog_begin: return "DW_AT_MIPS_epilog_begin"; - case DW_AT_MIPS_loop_unroll_factor: return "DW_AT_MIPS_loop_unroll_factor"; - case DW_AT_MIPS_software_pipeline_depth: return "DW_AT_MIPS_software_pipeline_depth"; - case DW_AT_MIPS_linkage_name: return "DW_AT_MIPS_linkage_name"; - case DW_AT_MIPS_stride: return "DW_AT_MIPS_stride"; - case DW_AT_MIPS_abstract_name: return "DW_AT_MIPS_abstract_name"; - case DW_AT_MIPS_clone_origin: return "DW_AT_MIPS_clone_origin"; - case DW_AT_MIPS_has_inlines: return "DW_AT_MIPS_has_inlines"; - - /* HP Extensions. */ - case DW_AT_HP_block_index: return "DW_AT_HP_block_index"; - case DW_AT_HP_actuals_stmt_list: return "DW_AT_HP_actuals_stmt_list"; - case DW_AT_HP_proc_per_section: return "DW_AT_HP_proc_per_section"; - case DW_AT_HP_raw_data_ptr: return "DW_AT_HP_raw_data_ptr"; - case DW_AT_HP_pass_by_reference: return "DW_AT_HP_pass_by_reference"; - case DW_AT_HP_opt_level: return "DW_AT_HP_opt_level"; - case DW_AT_HP_prof_version_id: return "DW_AT_HP_prof_version_id"; - case DW_AT_HP_opt_flags: return "DW_AT_HP_opt_flags"; - case DW_AT_HP_cold_region_low_pc: return "DW_AT_HP_cold_region_low_pc"; - case DW_AT_HP_cold_region_high_pc: return "DW_AT_HP_cold_region_high_pc"; - case DW_AT_HP_all_variables_modifiable: return "DW_AT_HP_all_variables_modifiable"; - case DW_AT_HP_linkage_name: return "DW_AT_HP_linkage_name"; - case DW_AT_HP_prof_flags: return "DW_AT_HP_prof_flags"; - - /* One value is shared by the MIPS and HP extensions: */ - case DW_AT_MIPS_fde: return "DW_AT_MIPS_fde or DW_AT_HP_unmodifiable"; - - /* GNU extensions. */ - case DW_AT_sf_names: return "DW_AT_sf_names"; - case DW_AT_src_info: return "DW_AT_src_info"; - case DW_AT_mac_info: return "DW_AT_mac_info"; - case DW_AT_src_coords: return "DW_AT_src_coords"; - case DW_AT_body_begin: return "DW_AT_body_begin"; - case DW_AT_body_end: return "DW_AT_body_end"; - case DW_AT_GNU_vector: return "DW_AT_GNU_vector"; - case DW_AT_GNU_guarded_by: return "DW_AT_GNU_guarded_by"; - case DW_AT_GNU_pt_guarded_by: return "DW_AT_GNU_pt_guarded_by"; - case DW_AT_GNU_guarded: return "DW_AT_GNU_guarded"; - case DW_AT_GNU_pt_guarded: return "DW_AT_GNU_pt_guarded"; - case DW_AT_GNU_locks_excluded: return "DW_AT_GNU_locks_excluded"; - case DW_AT_GNU_exclusive_locks_required: return "DW_AT_GNU_exclusive_locks_required"; - case DW_AT_GNU_shared_locks_required: return "DW_AT_GNU_shared_locks_required"; - case DW_AT_GNU_odr_signature: return "DW_AT_GNU_odr_signature"; - case DW_AT_use_GNAT_descriptive_type: return "DW_AT_use_GNAT_descriptive_type"; - case DW_AT_GNAT_descriptive_type: return "DW_AT_GNAT_descriptive_type"; - case DW_AT_GNU_call_site_value: return "DW_AT_GNU_call_site_value"; - case DW_AT_GNU_call_site_data_value: return "DW_AT_GNU_call_site_data_value"; - case DW_AT_GNU_call_site_target: return "DW_AT_GNU_call_site_target"; - case DW_AT_GNU_call_site_target_clobbered: return "DW_AT_GNU_call_site_target_clobbered"; - case DW_AT_GNU_tail_call: return "DW_AT_GNU_tail_call"; - case DW_AT_GNU_all_tail_call_sites: return "DW_AT_GNU_all_tail_call_sites"; - case DW_AT_GNU_all_call_sites: return "DW_AT_GNU_all_call_sites"; - case DW_AT_GNU_all_source_call_sites: return "DW_AT_GNU_all_source_call_sites"; - - /* UPC extension. */ - case DW_AT_upc_threads_scaled: return "DW_AT_upc_threads_scaled"; - - /* PGI (STMicroelectronics) extensions. */ - case DW_AT_PGI_lbase: return "DW_AT_PGI_lbase"; - case DW_AT_PGI_soffset: return "DW_AT_PGI_soffset"; - case DW_AT_PGI_lstride: return "DW_AT_PGI_lstride"; - - default: - { - static char buffer[100]; - - snprintf (buffer, sizeof (buffer), _("Unknown AT value: %lx"), - attribute); - return buffer; - } - } -} - static unsigned char * -read_and_display_attr (unsigned long attribute, - unsigned long form, - unsigned char * data, - dwarf_vma cu_offset, - dwarf_vma pointer_size, - dwarf_vma offset_size, - int dwarf_version, - debug_info * debug_info_p, - int do_loc, - struct dwarf_section * section) +read_and_display_attr (unsigned long attribute, + unsigned long form, + dwarf_signed_vma implicit_const, + unsigned char * data, + unsigned char * end, + dwarf_vma cu_offset, + dwarf_vma pointer_size, + dwarf_vma offset_size, + int dwarf_version, + debug_info * debug_info_p, + int do_loc, + struct dwarf_section * section, + struct cu_tu_set * this_set) { if (!do_loc) printf (" %-18s:", get_AT_name (attribute)); - data = read_and_display_attr_value (attribute, form, data, cu_offset, - pointer_size, offset_size, + data = read_and_display_attr_value (attribute, form, implicit_const, data, end, + cu_offset, pointer_size, offset_size, dwarf_version, debug_info_p, - do_loc, section); + do_loc, section, this_set, ' '); if (!do_loc) printf ("\n"); return data; } +/* Like load_debug_section, but if the ordinary call fails, and we are + following debug links, and we have been able to load a separate debug + info file, then attempt to load the requested section from the separate + file. */ -/* Process the contents of a .debug_info section. If do_loc is non-zero - then we are scanning for location lists and we do not want to display - anything to the user. If do_types is non-zero, we are processing - a .debug_types section instead of a .debug_info section. */ +static bfd_boolean +load_debug_section_with_follow (enum dwarf_section_display_enum sec_enum, + void * data) +{ + if (load_debug_section (sec_enum, data)) + { + if (data == separate_debug_file) + debug_displays[sec_enum].section.filename = separate_debug_filename; + + /* FIXME: We should check to see if there is a separate debug info file + that also contains this section, and if so, issue a warning. */ + return TRUE; + } -static int -process_debug_info (struct dwarf_section *section, - void *file, - enum dwarf_section_display_enum abbrev_sec, - int do_loc, - int do_types) + if (do_follow_links && separate_debug_file != NULL) + if (load_debug_section (sec_enum, separate_debug_file)) + { + debug_displays[sec_enum].section.filename = separate_debug_filename; + return TRUE; + } + + return FALSE; +} + +static void +introduce (struct dwarf_section * section, bfd_boolean raw) +{ + if (raw) + { + if (do_follow_links && section->filename) + printf (_("Raw dump of debug contents of section %s (loaded from %s):\n\n"), + section->name, section->filename); + else + printf (_("Raw dump of debug contents of section %s:\n\n"), section->name); + } + else + { + if (do_follow_links && section->filename) + printf (_("Contents of the %s section (loaded from %s):\n\n"), + section->name, section->filename); + else + printf (_("Contents of the %s section:\n\n"), section->name); + } +} + +/* Process the contents of a .debug_info section. + If do_loc is TRUE then we are scanning for location lists and dwo tags + and we do not want to display anything to the user. + If do_types is TRUE, we are processing a .debug_types section instead of + a .debug_info section. + The information displayed is restricted by the values in DWARF_START_DIE + and DWARF_CUTOFF_LEVEL. + Returns TRUE upon success. Otherwise an error or warning message is + printed and FALSE is returned. */ + +static bfd_boolean +process_debug_info (struct dwarf_section * section, + void * file, + enum dwarf_section_display_enum abbrev_sec, + bfd_boolean do_loc, + bfd_boolean do_types) { unsigned char *start = section->start; unsigned char *end = start + section->size; @@ -2030,66 +2807,81 @@ process_debug_info (struct dwarf_section *section, /* Read the first 4 bytes. For a 32-bit DWARF section, this will be the length. For a 64-bit DWARF section, it'll be the escape code 0xffffffff followed by an 8 byte length. */ - length = byte_get (section_begin, 4); + SAFE_BYTE_GET (length, section_begin, 4, end); if (length == 0xffffffff) { - length = byte_get (section_begin + 4, 8); + SAFE_BYTE_GET (length, section_begin + 4, 8, end); section_begin += length + 12; } else if (length >= 0xfffffff0 && length < 0xffffffff) { warn (_("Reserved length value (0x%s) found in section %s\n"), dwarf_vmatoa ("x", length), section->name); - return 0; + return FALSE; } else section_begin += length + 4; /* Negative values are illegal, they may even cause infinite looping. This can happen if we can't accurately apply - relocations to an object file. */ - if ((signed long) length <= 0) + relocations to an object file, or if the file is corrupt. */ + if ((signed long) length <= 0 || section_begin < start) { warn (_("Corrupt unit length (0x%s) found in section %s\n"), dwarf_vmatoa ("x", length), section->name); - return 0; + return FALSE; } } if (num_units == 0) { - error (_("No comp units in %s section ?"), section->name); - return 0; + error (_("No comp units in %s section ?\n"), section->name); + return FALSE; } /* Then allocate an array to hold the information. */ debug_information = (debug_info *) cmalloc (num_units, - sizeof (* debug_information)); + sizeof (* debug_information)); if (debug_information == NULL) { - error (_("Not enough memory for a debug info array of %u entries"), + error (_("Not enough memory for a debug info array of %u entries\n"), num_units); - return 0; + alloc_num_debug_info_entries = num_debug_info_entries = 0; + return FALSE; } + + /* PR 17531: file: 92ca3797. + We cannot rely upon the debug_information array being initialised + before it is used. A corrupt file could easily contain references + to a unit for which information has not been made available. So + we ensure that the array is zeroed here. */ + memset (debug_information, 0, num_units * sizeof (*debug_information)); + + alloc_num_debug_info_entries = num_units; } if (!do_loc) { - if (dwarf_start_die == 0) - printf (_("Contents of the %s section:\n\n"), section->name); - - load_debug_section (str, file); + load_debug_section_with_follow (str, file); + load_debug_section_with_follow (line_str, file); + load_debug_section_with_follow (str_dwo, file); + load_debug_section_with_follow (str_index, file); + load_debug_section_with_follow (str_index_dwo, file); + load_debug_section_with_follow (debug_addr, file); } - load_debug_section (abbrev_sec, file); + load_debug_section_with_follow (abbrev_sec, file); if (debug_displays [abbrev_sec].section.start == NULL) { warn (_("Unable to locate %s section!\n"), - debug_displays [abbrev_sec].section.name); - return 0; + debug_displays [abbrev_sec].section.uncompressed_name); + return FALSE; } + if (!do_loc && dwarf_start_die == 0) + introduce (section, FALSE); + for (section_begin = start, unit = 0; start < end; unit++) { DWARF2_Internal_CompUnit compunit; @@ -2097,20 +2889,23 @@ process_debug_info (struct dwarf_section *section, unsigned char *tags; int level, last_level, saved_level; dwarf_vma cu_offset; - int offset_size; - int initial_length_size; - unsigned char signature[8] = { 0 }; + unsigned long sec_off; + unsigned int offset_size; + unsigned int initial_length_size; + dwarf_vma signature_high = 0; + dwarf_vma signature_low = 0; dwarf_vma type_offset = 0; + struct cu_tu_set *this_set; + dwarf_vma abbrev_base; + size_t abbrev_size; hdrptr = start; - compunit.cu_length = byte_get (hdrptr, 4); - hdrptr += 4; + SAFE_BYTE_GET_AND_INC (compunit.cu_length, hdrptr, 4, end); if (compunit.cu_length == 0xffffffff) { - compunit.cu_length = byte_get (hdrptr, 8); - hdrptr += 8; + SAFE_BYTE_GET_AND_INC (compunit.cu_length, hdrptr, 8, end); offset_size = 8; initial_length_size = 12; } @@ -2120,41 +2915,77 @@ process_debug_info (struct dwarf_section *section, initial_length_size = 4; } - compunit.cu_version = byte_get (hdrptr, 2); - hdrptr += 2; + SAFE_BYTE_GET_AND_INC (compunit.cu_version, hdrptr, 2, end); cu_offset = start - section_begin; - compunit.cu_abbrev_offset = byte_get (hdrptr, offset_size); - hdrptr += offset_size; + this_set = find_cu_tu_set_v2 (cu_offset, do_types); - compunit.cu_pointer_size = byte_get (hdrptr, 1); - hdrptr += 1; + if (compunit.cu_version < 5) + { + compunit.cu_unit_type = DW_UT_compile; + /* Initialize it due to a false compiler warning. */ + compunit.cu_pointer_size = -1; + } + else + { + SAFE_BYTE_GET_AND_INC (compunit.cu_unit_type, hdrptr, 1, end); + do_types = (compunit.cu_unit_type == DW_UT_type); - if (do_types) - { - int i; + SAFE_BYTE_GET_AND_INC (compunit.cu_pointer_size, hdrptr, 1, end); + } - for (i = 0; i < 8; i++) - { - signature[i] = byte_get (hdrptr, 1); - hdrptr += 1; - } + SAFE_BYTE_GET_AND_INC (compunit.cu_abbrev_offset, hdrptr, offset_size, end); - type_offset = byte_get (hdrptr, offset_size); - hdrptr += offset_size; - } + if (this_set == NULL) + { + abbrev_base = 0; + abbrev_size = debug_displays [abbrev_sec].section.size; + } + else + { + abbrev_base = this_set->section_offsets [DW_SECT_ABBREV]; + abbrev_size = this_set->section_sizes [DW_SECT_ABBREV]; + } - if ((do_loc || do_debug_loc || do_debug_ranges) - && num_debug_info_entries == 0 - && ! do_types) + if (compunit.cu_version < 5) + SAFE_BYTE_GET_AND_INC (compunit.cu_pointer_size, hdrptr, 1, end); + + /* PR 17512: file: 001-108546-0.001:0.1. */ + if (compunit.cu_pointer_size < 2 || compunit.cu_pointer_size > 8) { - debug_information [unit].cu_offset = cu_offset; - debug_information [unit].pointer_size - = compunit.cu_pointer_size; - debug_information [unit].offset_size = offset_size; - debug_information [unit].dwarf_version = compunit.cu_version; - debug_information [unit].base_address = 0; + warn (_("Invalid pointer size (%d) in compunit header, using %d instead\n"), + compunit.cu_pointer_size, offset_size); + compunit.cu_pointer_size = offset_size; + } + + if (do_types) + { + SAFE_BYTE_GET64 (hdrptr, &signature_high, &signature_low, end); + hdrptr += 8; + SAFE_BYTE_GET_AND_INC (type_offset, hdrptr, offset_size, end); + } + + if (dwarf_start_die > (cu_offset + compunit.cu_length + + initial_length_size)) + { + start = section_begin + cu_offset + compunit.cu_length + + initial_length_size; + continue; + } + + if ((do_loc || do_debug_loc || do_debug_ranges) + && num_debug_info_entries == 0 + && ! do_types) + { + debug_information [unit].cu_offset = cu_offset; + debug_information [unit].pointer_size + = compunit.cu_pointer_size; + debug_information [unit].offset_size = offset_size; + debug_information [unit].dwarf_version = compunit.cu_version; + debug_information [unit].base_address = 0; + debug_information [unit].addr_base = DEBUG_INFO_UNAVAILABLE; + debug_information [unit].ranges_base = DEBUG_INFO_UNAVAILABLE; debug_information [unit].loc_offsets = NULL; debug_information [unit].have_frame_base = NULL; debug_information [unit].max_loc_offsets = 0; @@ -2172,36 +3003,56 @@ process_debug_info (struct dwarf_section *section, dwarf_vmatoa ("x", compunit.cu_length), offset_size == 8 ? "64-bit" : "32-bit"); printf (_(" Version: %d\n"), compunit.cu_version); - printf (_(" Abbrev Offset: %s\n"), - dwarf_vmatoa ("d", compunit.cu_abbrev_offset)); + printf (_(" Abbrev Offset: 0x%s\n"), + dwarf_vmatoa ("x", compunit.cu_abbrev_offset)); printf (_(" Pointer Size: %d\n"), compunit.cu_pointer_size); if (do_types) { - int i; - printf (_(" Signature: ")); - for (i = 0; i < 8; i++) - printf ("%02x", signature[i]); - printf ("\n"); - printf (_(" Type Offset: 0x%s\n"), - dwarf_vmatoa ("x", type_offset)); + char buf[64]; + + printf (_(" Signature: 0x%s\n"), + dwarf_vmatoa64 (signature_high, signature_low, + buf, sizeof (buf))); + printf (_(" Type Offset: 0x%s\n"), + dwarf_vmatoa ("x", type_offset)); + } + if (this_set != NULL) + { + dwarf_vma *offsets = this_set->section_offsets; + size_t *sizes = this_set->section_sizes; + + printf (_(" Section contributions:\n")); + printf (_(" .debug_abbrev.dwo: 0x%s 0x%s\n"), + dwarf_vmatoa ("x", offsets [DW_SECT_ABBREV]), + dwarf_vmatoa ("x", sizes [DW_SECT_ABBREV])); + printf (_(" .debug_line.dwo: 0x%s 0x%s\n"), + dwarf_vmatoa ("x", offsets [DW_SECT_LINE]), + dwarf_vmatoa ("x", sizes [DW_SECT_LINE])); + printf (_(" .debug_loc.dwo: 0x%s 0x%s\n"), + dwarf_vmatoa ("x", offsets [DW_SECT_LOC]), + dwarf_vmatoa ("x", sizes [DW_SECT_LOC])); + printf (_(" .debug_str_offsets.dwo: 0x%s 0x%s\n"), + dwarf_vmatoa ("x", offsets [DW_SECT_STR_OFFSETS]), + dwarf_vmatoa ("x", sizes [DW_SECT_STR_OFFSETS])); } } - if (cu_offset + compunit.cu_length + initial_length_size - > section->size) + sec_off = cu_offset + initial_length_size; + if (sec_off + compunit.cu_length < sec_off + || sec_off + compunit.cu_length > section->size) { - warn (_("Debug info is corrupted, length of CU at %s" - " extends beyond end of section (length = %s)\n"), - dwarf_vmatoa ("x", cu_offset), + warn (_("Debug info is corrupted, %s header at %#lx has length %s\n"), + section->name, + (unsigned long) cu_offset, dwarf_vmatoa ("x", compunit.cu_length)); + num_units = unit; break; } + tags = hdrptr; start += compunit.cu_length + initial_length_size; - if (compunit.cu_version != 2 - && compunit.cu_version != 3 - && compunit.cu_version != 4) + if (compunit.cu_version < 2 || compunit.cu_version > 5) { warn (_("CU at offset %s contains corrupt or " "unsupported version number: %d.\n"), @@ -2209,20 +3060,34 @@ process_debug_info (struct dwarf_section *section, continue; } + if (compunit.cu_unit_type != DW_UT_compile + && compunit.cu_unit_type != DW_UT_type) + { + warn (_("CU at offset %s contains corrupt or " + "unsupported unit type: %d.\n"), + dwarf_vmatoa ("x", cu_offset), compunit.cu_unit_type); + continue; + } + free_abbrevs (); - /* Process the abbrevs used by this compilation unit. DWARF - sections under Mach-O have non-zero addresses. */ - if (compunit.cu_abbrev_offset >= debug_displays [abbrev_sec].section.size) + /* Process the abbrevs used by this compilation unit. */ + if (compunit.cu_abbrev_offset >= abbrev_size) warn (_("Debug info is corrupted, abbrev offset (%lx) is larger than abbrev section size (%lx)\n"), (unsigned long) compunit.cu_abbrev_offset, + (unsigned long) abbrev_size); + /* PR 17531: file:4bcd9ce9. */ + else if ((abbrev_base + abbrev_size) + > debug_displays [abbrev_sec].section.size) + warn (_("Debug info is corrupted, abbrev size (%lx) is larger than abbrev section size (%lx)\n"), + (unsigned long) abbrev_base + abbrev_size, (unsigned long) debug_displays [abbrev_sec].section.size); else process_abbrev_section - ((unsigned char *) debug_displays [abbrev_sec].section.start - + compunit.cu_abbrev_offset, - (unsigned char *) debug_displays [abbrev_sec].section.start - + debug_displays [abbrev_sec].section.size); + (((unsigned char *) debug_displays [abbrev_sec].section.start + + abbrev_base + compunit.cu_abbrev_offset), + ((unsigned char *) debug_displays [abbrev_sec].section.start + + abbrev_base + abbrev_size)); level = 0; last_level = level; @@ -2238,7 +3103,7 @@ process_debug_info (struct dwarf_section *section, die_offset = tags - section_begin; - abbrev_number = read_leb128 (tags, & bytes_read, 0); + abbrev_number = read_uleb128 (tags, & bytes_read, start); tags += bytes_read; /* A null DIE marks the end of a list of siblings or it may also be @@ -2257,6 +3122,12 @@ process_debug_info (struct dwarf_section *section, break; } + if (!do_loc && die_offset >= dwarf_start_die + && (dwarf_cutoff_level == -1 + || level < dwarf_cutoff_level)) + printf (_(" <%d><%lx>: Abbrev Number: 0\n"), + level, die_offset); + --level; if (level < 0) { @@ -2264,15 +3135,15 @@ process_debug_info (struct dwarf_section *section, if (num_bogus_warns < 3) { - warn (_("Bogus end-of-siblings marker detected at offset %lx in .debug_info section\n"), - die_offset); + warn (_("Bogus end-of-siblings marker detected at offset %lx in %s section\n"), + die_offset, section->name); num_bogus_warns ++; if (num_bogus_warns == 3) warn (_("Further warnings about bogus end-of-sibling markers suppressed\n")); } } if (dwarf_start_die != 0 && level < saved_level) - return 1; + return TRUE; continue; } @@ -2310,9 +3181,9 @@ process_debug_info (struct dwarf_section *section, printf ("\n"); fflush (stdout); } - warn (_("DIE at offset %lx refers to abbreviation number %lu which does not exist\n"), + warn (_("DIE at offset 0x%lx refers to abbreviation number %lu which does not exist\n"), die_offset, abbrev_number); - return 0; + return FALSE; } if (!do_loc && do_printing) @@ -2324,7 +3195,8 @@ process_debug_info (struct dwarf_section *section, need_base_address = 0; break; case DW_TAG_compile_unit: - need_base_address = 1; + need_base_address = 1; + need_dwo_info = do_loc; break; case DW_TAG_entry_point: case DW_TAG_subprogram: @@ -2334,31 +3206,65 @@ process_debug_info (struct dwarf_section *section, break; } - for (attr = entry->first_attr; attr; attr = attr->next) - { - debug_info *arg; + debug_info *debug_info_p = + (debug_information && unit < alloc_num_debug_info_entries) + ? debug_information + unit : NULL; + assert (!debug_info_p + || (debug_info_p->num_loc_offsets + == debug_info_p->num_loc_views)); + + for (attr = entry->first_attr; + attr && attr->attribute; + attr = attr->next) + { if (! do_loc && do_printing) /* Show the offset from where the tag was extracted. */ printf (" <%lx>", (unsigned long)(tags - section_begin)); - arg = debug_information; - if (debug_information) - arg += unit; - tags = read_and_display_attr (attr->attribute, attr->form, - tags, cu_offset, + attr->implicit_const, + tags, + end, + cu_offset, compunit.cu_pointer_size, offset_size, compunit.cu_version, - arg, - do_loc || ! do_printing, section); + debug_info_p, + do_loc || ! do_printing, + section, + this_set); + } + + /* If a locview attribute appears before a location one, + make sure we don't associate it with an earlier + loclist. */ + if (debug_info_p) + switch (debug_info_p->num_loc_offsets - debug_info_p->num_loc_views) + { + case 1: + debug_info_p->loc_views [debug_info_p->num_loc_views] = vm1; + debug_info_p->num_loc_views++; + assert (debug_info_p->num_loc_views + == debug_info_p->num_loc_offsets); + break; + + case 0: + break; + + case -1: + warn(_("DIE has locviews without loclist\n")); + debug_info_p->num_loc_views--; + break; + + default: + assert (0); } - if (entry->children) - ++level; - } + if (entry->children) + ++level; + } } /* Set num_debug_info_entries here so that it can be used to check if @@ -2366,12 +3272,17 @@ process_debug_info (struct dwarf_section *section, if ((do_loc || do_debug_loc || do_debug_ranges) && num_debug_info_entries == 0 && ! do_types) - num_debug_info_entries = num_units; + { + if (num_units > alloc_num_debug_info_entries) + num_debug_info_entries = alloc_num_debug_info_entries; + else + num_debug_info_entries = num_units; + } if (!do_loc) printf ("\n"); - return 1; + return TRUE; } /* Locate and scan the .debug_info section in the file and record the pointer @@ -2383,13 +3294,8 @@ process_debug_info (struct dwarf_section *section, static unsigned int load_debug_info (void * file) { - /* Reset the last pointer size so that we can issue correct error - messages if we are displaying the contents of more than one section. */ - last_pointer_size = 0; - warned_about_missing_comp_units = FALSE; - /* If we have already tried and failed to load the .debug_info - section then do not bother to repear the task. */ + section then do not bother to repeat the task. */ if (num_debug_info_entries == DEBUG_INFO_UNAVAILABLE) return 0; @@ -2397,366 +3303,681 @@ load_debug_info (void * file) if (num_debug_info_entries > 0) return num_debug_info_entries; - if (load_debug_section (info, file) - && process_debug_info (&debug_displays [info].section, file, abbrev, 1, 0)) + /* If this is a DWARF package file, load the CU and TU indexes. */ + (void) load_cu_tu_indexes (file); + + if (load_debug_section_with_follow (info, file) + && process_debug_info (&debug_displays [info].section, file, abbrev, TRUE, FALSE)) + return num_debug_info_entries; + + if (load_debug_section_with_follow (info_dwo, file) + && process_debug_info (&debug_displays [info_dwo].section, file, + abbrev_dwo, TRUE, FALSE)) return num_debug_info_entries; num_debug_info_entries = DEBUG_INFO_UNAVAILABLE; return 0; } -static int -display_debug_lines_raw (struct dwarf_section *section, - unsigned char *data, - unsigned char *end) -{ - unsigned char *start = section->start; +/* Read a DWARF .debug_line section header starting at DATA. + Upon success returns an updated DATA pointer and the LINFO + structure and the END_OF_SEQUENCE pointer will be filled in. + Otherwise returns NULL. */ - printf (_("Raw dump of debug contents of section %s:\n\n"), - section->name); +static unsigned char * +read_debug_line_header (struct dwarf_section * section, + unsigned char * data, + unsigned char * end, + DWARF2_Internal_LineInfo * linfo, + unsigned char ** end_of_sequence) +{ + unsigned char *hdrptr; + unsigned int initial_length_size; + unsigned char address_size, segment_selector_size; - while (data < end) - { - DWARF2_Internal_LineInfo linfo; - unsigned char *standard_opcodes; - unsigned char *end_of_sequence; - unsigned char *hdrptr; - unsigned long hdroff; - int initial_length_size; - int offset_size; - int i; + /* Extract information from the Line Number Program Header. + (section 6.2.4 in the Dwarf3 doc). */ + hdrptr = data; - hdrptr = data; - hdroff = hdrptr - start; + /* Get and check the length of the block. */ + SAFE_BYTE_GET_AND_INC (linfo->li_length, hdrptr, 4, end); - /* Check the length of the block. */ - linfo.li_length = byte_get (hdrptr, 4); - hdrptr += 4; + if (linfo->li_length == 0xffffffff) + { + /* This section is 64-bit DWARF 3. */ + SAFE_BYTE_GET_AND_INC (linfo->li_length, hdrptr, 8, end); + linfo->li_offset_size = 8; + initial_length_size = 12; + } + else + { + linfo->li_offset_size = 4; + initial_length_size = 4; + } - if (linfo.li_length == 0xffffffff) + if (linfo->li_length + initial_length_size > section->size) + { + /* If the length field has a relocation against it, then we should + not complain if it is inaccurate (and probably negative). This + happens in object files when the .debug_line section is actually + comprised of several different .debug_line.* sections, (some of + which may be removed by linker garbage collection), and a relocation + is used to compute the correct length once that is done. */ + if (reloc_at (section, (hdrptr - section->start) - linfo->li_offset_size)) { - /* This section is 64-bit DWARF 3. */ - linfo.li_length = byte_get (hdrptr, 8); - hdrptr += 8; - offset_size = 8; - initial_length_size = 12; + linfo->li_length = (end - data) - initial_length_size; } else { - offset_size = 4; - initial_length_size = 4; + warn (_("The length field (0x%lx) in the debug_line header is wrong - the section is too small\n"), + (long) linfo->li_length); + return NULL; } + } + + /* Get and check the version number. */ + SAFE_BYTE_GET_AND_INC (linfo->li_version, hdrptr, 2, end); - if (linfo.li_length + initial_length_size > section->size) + if (linfo->li_version != 2 + && linfo->li_version != 3 + && linfo->li_version != 4 + && linfo->li_version != 5) + { + warn (_("Only DWARF version 2, 3, 4 and 5 line info " + "is currently supported.\n")); + return NULL; + } + + if (linfo->li_version >= 5) + { + SAFE_BYTE_GET_AND_INC (address_size, hdrptr, 1, end); + + SAFE_BYTE_GET_AND_INC (segment_selector_size, hdrptr, 1, end); + if (segment_selector_size != 0) { - warn - (_("The information in section %s appears to be corrupt - the section is too small\n"), - section->name); + warn (_("The %s section contains " + "unsupported segment selector size: %d.\n"), + section->name, segment_selector_size); return 0; } + } + + SAFE_BYTE_GET_AND_INC (linfo->li_prologue_length, hdrptr, + linfo->li_offset_size, end); + SAFE_BYTE_GET_AND_INC (linfo->li_min_insn_length, hdrptr, 1, end); + + if (linfo->li_version >= 4) + { + SAFE_BYTE_GET_AND_INC (linfo->li_max_ops_per_insn, hdrptr, 1, end); - /* Check its version number. */ - linfo.li_version = byte_get (hdrptr, 2); - hdrptr += 2; - if (linfo.li_version != 2 - && linfo.li_version != 3 - && linfo.li_version != 4) + if (linfo->li_max_ops_per_insn == 0) { - warn (_("Only DWARF version 2, 3 and 4 line info is currently supported.\n")); - return 0; + warn (_("Invalid maximum operations per insn.\n")); + return NULL; } + } + else + linfo->li_max_ops_per_insn = 1; + + SAFE_BYTE_GET_AND_INC (linfo->li_default_is_stmt, hdrptr, 1, end); + SAFE_SIGNED_BYTE_GET_AND_INC (linfo->li_line_base, hdrptr, 1, end); + SAFE_BYTE_GET_AND_INC (linfo->li_line_range, hdrptr, 1, end); + SAFE_BYTE_GET_AND_INC (linfo->li_opcode_base, hdrptr, 1, end); + + * end_of_sequence = data + linfo->li_length + initial_length_size; + /* PR 17512: file:002-117414-0.004. */ + if (* end_of_sequence > end) + { + warn (_("Line length %s extends beyond end of section\n"), + dwarf_vmatoa ("u", linfo->li_length)); + * end_of_sequence = end; + return NULL; + } - linfo.li_prologue_length = byte_get (hdrptr, offset_size); - hdrptr += offset_size; - linfo.li_min_insn_length = byte_get (hdrptr, 1); - hdrptr++; - if (linfo.li_version >= 4) + return hdrptr; +} + +static unsigned char * +display_formatted_table (unsigned char * data, + unsigned char * start, + unsigned char * end, + const DWARF2_Internal_LineInfo * linfo, + struct dwarf_section * section, + bfd_boolean is_dir) +{ + unsigned char *format_start, format_count, *format, formati; + dwarf_vma data_count, datai; + unsigned int bytes_read, namepass, last_entry = 0; + + SAFE_BYTE_GET_AND_INC (format_count, data, 1, end); + format_start = data; + for (formati = 0; formati < format_count; formati++) + { + read_uleb128 (data, & bytes_read, end); + data += bytes_read; + read_uleb128 (data, & bytes_read, end); + data += bytes_read; + if (data == end) { - linfo.li_max_ops_per_insn = byte_get (hdrptr, 1); - hdrptr++; - if (linfo.li_max_ops_per_insn == 0) - { - warn (_("Invalid maximum operations per insn.\n")); - return 0; - } + if (is_dir) + warn (_("Corrupt directory format table entry\n")); + else + warn (_("Corrupt file name format table entry\n")); + return data; } + } + + data_count = read_uleb128 (data, & bytes_read, end); + data += bytes_read; + if (data == end) + { + if (is_dir) + warn (_("Corrupt directory list\n")); else - linfo.li_max_ops_per_insn = 1; - linfo.li_default_is_stmt = byte_get (hdrptr, 1); - hdrptr++; - linfo.li_line_base = byte_get (hdrptr, 1); - hdrptr++; - linfo.li_line_range = byte_get (hdrptr, 1); - hdrptr++; - linfo.li_opcode_base = byte_get (hdrptr, 1); - hdrptr++; - - /* Sign extend the line base field. */ - linfo.li_line_base <<= 24; - linfo.li_line_base >>= 24; - - printf (_(" Offset: 0x%lx\n"), hdroff); - printf (_(" Length: %ld\n"), (long) linfo.li_length); - printf (_(" DWARF Version: %d\n"), linfo.li_version); - printf (_(" Prologue Length: %d\n"), linfo.li_prologue_length); - printf (_(" Minimum Instruction Length: %d\n"), linfo.li_min_insn_length); - if (linfo.li_version >= 4) - printf (_(" Maximum Ops per Instruction: %d\n"), linfo.li_max_ops_per_insn); - printf (_(" Initial value of 'is_stmt': %d\n"), linfo.li_default_is_stmt); - printf (_(" Line Base: %d\n"), linfo.li_line_base); - printf (_(" Line Range: %d\n"), linfo.li_line_range); - printf (_(" Opcode Base: %d\n"), linfo.li_opcode_base); - - end_of_sequence = data + linfo.li_length + initial_length_size; - - reset_state_machine (linfo.li_default_is_stmt); - - /* Display the contents of the Opcodes table. */ - standard_opcodes = hdrptr; - - printf (_("\n Opcodes:\n")); - - for (i = 1; i < linfo.li_opcode_base; i++) - printf (_(" Opcode %d has %d args\n"), i, standard_opcodes[i - 1]); - - /* Display the contents of the Directory table. */ - data = standard_opcodes + linfo.li_opcode_base - 1; - - if (*data == 0) + warn (_("Corrupt file name list\n")); + return data; + } + + if (data_count == 0) + { + if (is_dir) printf (_("\n The Directory Table is empty.\n")); else + printf (_("\n The File Name Table is empty.\n")); + return data; + } + + if (is_dir) + printf (_("\n The Directory Table (offset 0x%lx):\n"), + (long) (data - start)); + else + printf (_("\n The File Name Table (offset 0x%lx):\n"), + (long) (data - start)); + + printf (_(" Entry")); + /* Delay displaying name as the last entry for better screen layout. */ + for (namepass = 0; namepass < 2; namepass++) + { + format = format_start; + for (formati = 0; formati < format_count; formati++) { - printf (_("\n The Directory Table:\n")); + dwarf_vma content_type; + + content_type = read_uleb128 (format, & bytes_read, end); + format += bytes_read; + if ((content_type == DW_LNCT_path) == (namepass == 1)) + switch (content_type) + { + case DW_LNCT_path: + printf (_("\tName")); + break; + case DW_LNCT_directory_index: + printf (_("\tDir")); + break; + case DW_LNCT_timestamp: + printf (_("\tTime")); + break; + case DW_LNCT_size: + printf (_("\tSize")); + break; + case DW_LNCT_MD5: + printf (_("\tMD5")); + break; + default: + printf (_("\t(Unknown format content type %s)"), + dwarf_vmatoa ("u", content_type)); + } + read_uleb128 (format, & bytes_read, end); + format += bytes_read; + } + } + putchar ('\n'); - while (*data != 0) - { - printf (" %s\n", data); + for (datai = 0; datai < data_count; datai++) + { + unsigned char *datapass = data; - data += strlen ((char *) data) + 1; + printf (" %d", last_entry++); + /* Delay displaying name as the last entry for better screen layout. */ + for (namepass = 0; namepass < 2; namepass++) + { + format = format_start; + data = datapass; + for (formati = 0; formati < format_count; formati++) + { + dwarf_vma content_type, form; + + content_type = read_uleb128 (format, & bytes_read, end); + format += bytes_read; + form = read_uleb128 (format, & bytes_read, end); + format += bytes_read; + data = read_and_display_attr_value (0, form, 0, data, end, 0, 0, + linfo->li_offset_size, + linfo->li_version, NULL, + ((content_type == DW_LNCT_path) != (namepass == 1)), + section, NULL, '\t'); } } + if (data == end) + { + if (is_dir) + warn (_("Corrupt directory entries list\n")); + else + warn (_("Corrupt file name entries list\n")); + return data; + } + putchar ('\n'); + } + return data; +} - /* Skip the NUL at the end of the table. */ - data++; +static int +display_debug_lines_raw (struct dwarf_section * section, + unsigned char * data, + unsigned char * end, + void * file) +{ + unsigned char *start = section->start; + int verbose_view = 0; - /* Display the contents of the File Name table. */ - if (*data == 0) - printf (_("\n The File Name Table is empty.\n")); + introduce (section, TRUE); + + while (data < end) + { + static DWARF2_Internal_LineInfo saved_linfo; + DWARF2_Internal_LineInfo linfo; + unsigned char *standard_opcodes; + unsigned char *end_of_sequence; + int i; + + if (const_strneq (section->name, ".debug_line.") + /* Note: the following does not apply to .debug_line.dwo sections. + These are full debug_line sections. */ + && strcmp (section->name, ".debug_line.dwo") != 0) + { + /* Sections named .debug_line. are fragments of a .debug_line + section containing just the Line Number Statements. They are + created by the assembler and intended to be used alongside gcc's + -ffunction-sections command line option. When the linker's + garbage collection decides to discard a .text. section it + can then also discard the line number information in .debug_line.. + + Since the section is a fragment it does not have the details + needed to fill out a LineInfo structure, so instead we use the + details from the last full debug_line section that we processed. */ + end_of_sequence = end; + standard_opcodes = NULL; + linfo = saved_linfo; + /* PR 17531: file: 0522b371. */ + if (linfo.li_line_range == 0) + { + warn (_("Partial .debug_line. section encountered without a prior full .debug_line section\n")); + return 0; + } + reset_state_machine (linfo.li_default_is_stmt); + } else { - printf (_("\n The File Name Table:\n")); - printf (_(" Entry\tDir\tTime\tSize\tName\n")); - - while (*data != 0) + unsigned char * hdrptr; + + if ((hdrptr = read_debug_line_header (section, data, end, & linfo, + & end_of_sequence)) == NULL) + return 0; + + printf (_(" Offset: 0x%lx\n"), (long)(data - start)); + printf (_(" Length: %ld\n"), (long) linfo.li_length); + printf (_(" DWARF Version: %d\n"), linfo.li_version); + printf (_(" Prologue Length: %d\n"), (int) linfo.li_prologue_length); + printf (_(" Minimum Instruction Length: %d\n"), linfo.li_min_insn_length); + if (linfo.li_version >= 4) + printf (_(" Maximum Ops per Instruction: %d\n"), linfo.li_max_ops_per_insn); + printf (_(" Initial value of 'is_stmt': %d\n"), linfo.li_default_is_stmt); + printf (_(" Line Base: %d\n"), linfo.li_line_base); + printf (_(" Line Range: %d\n"), linfo.li_line_range); + printf (_(" Opcode Base: %d\n"), linfo.li_opcode_base); + + /* PR 17512: file: 1665-6428-0.004. */ + if (linfo.li_line_range == 0) { - unsigned char *name; - unsigned int bytes_read; + warn (_("Line range of 0 is invalid, using 1 instead\n")); + linfo.li_line_range = 1; + } - printf (" %d\t", ++state_machine_regs.last_file_entry); - name = data; + reset_state_machine (linfo.li_default_is_stmt); - data += strlen ((char *) data) + 1; + /* Display the contents of the Opcodes table. */ + standard_opcodes = hdrptr; - printf ("%s\t", - dwarf_vmatoa ("u", read_leb128 (data, & bytes_read, 0))); - data += bytes_read; - printf ("%s\t", - dwarf_vmatoa ("u", read_leb128 (data, & bytes_read, 0))); - data += bytes_read; - printf ("%s\t", - dwarf_vmatoa ("u", read_leb128 (data, & bytes_read, 0))); - data += bytes_read; - printf ("%s\n", name); + /* PR 17512: file: 002-417945-0.004. */ + if (standard_opcodes + linfo.li_opcode_base >= end) + { + warn (_("Line Base extends beyond end of section\n")); + return 0; } - } - /* Skip the NUL at the end of the table. */ - data++; - - /* Now display the statements. */ - printf (_("\n Line Number Statements:\n")); + printf (_("\n Opcodes:\n")); - while (data < end_of_sequence) - { - unsigned char op_code; - dwarf_signed_vma adv; - dwarf_vma uladv; - unsigned int bytes_read; + for (i = 1; i < linfo.li_opcode_base; i++) + printf (ngettext (" Opcode %d has %d arg\n", + " Opcode %d has %d args\n", + standard_opcodes[i - 1]), + i, standard_opcodes[i - 1]); - op_code = *data++; + /* Display the contents of the Directory table. */ + data = standard_opcodes + linfo.li_opcode_base - 1; - if (op_code >= linfo.li_opcode_base) + if (linfo.li_version >= 5) { - op_code -= linfo.li_opcode_base; - uladv = (op_code / linfo.li_line_range); - if (linfo.li_max_ops_per_insn == 1) - { - uladv *= linfo.li_min_insn_length; - state_machine_regs.address += uladv; - printf (_(" Special opcode %d: " - "advance Address by %s to 0x%s"), - op_code, dwarf_vmatoa ("u", uladv), - dwarf_vmatoa ("x", state_machine_regs.address)); - } - else - { - state_machine_regs.address - += ((state_machine_regs.op_index + uladv) - / linfo.li_max_ops_per_insn) - * linfo.li_min_insn_length; - state_machine_regs.op_index - = (state_machine_regs.op_index + uladv) - % linfo.li_max_ops_per_insn; - printf (_(" Special opcode %d: " - "advance Address by %s to 0x%s[%d]"), - op_code, dwarf_vmatoa ("u", uladv), - dwarf_vmatoa ("x", state_machine_regs.address), - state_machine_regs.op_index); - } - adv = (op_code % linfo.li_line_range) + linfo.li_line_base; - state_machine_regs.line += adv; - printf (_(" and Line by %s to %d\n"), - dwarf_vmatoa ("d", adv), state_machine_regs.line); + load_debug_section_with_follow (line_str, file); + + data = display_formatted_table (data, start, end, &linfo, section, + TRUE); + data = display_formatted_table (data, start, end, &linfo, section, + FALSE); } - else switch (op_code) + else { - case DW_LNS_extended_op: - data += process_extended_line_op (data, linfo.li_default_is_stmt); - break; - - case DW_LNS_copy: - printf (_(" Copy\n")); - break; - - case DW_LNS_advance_pc: - uladv = read_leb128 (data, & bytes_read, 0); - data += bytes_read; - if (linfo.li_max_ops_per_insn == 1) - { - uladv *= linfo.li_min_insn_length; - state_machine_regs.address += uladv; - printf (_(" Advance PC by %s to 0x%s\n"), - dwarf_vmatoa ("u", uladv), - dwarf_vmatoa ("x", state_machine_regs.address)); - } + if (*data == 0) + printf (_("\n The Directory Table is empty.\n")); else { - state_machine_regs.address - += ((state_machine_regs.op_index + uladv) - / linfo.li_max_ops_per_insn) - * linfo.li_min_insn_length; - state_machine_regs.op_index - = (state_machine_regs.op_index + uladv) - % linfo.li_max_ops_per_insn; - printf (_(" Advance PC by %s to 0x%s[%d]\n"), - dwarf_vmatoa ("u", uladv), - dwarf_vmatoa ("x", state_machine_regs.address), - state_machine_regs.op_index); - } - break; + unsigned int last_dir_entry = 0; - case DW_LNS_advance_line: - adv = read_sleb128 (data, & bytes_read); - data += bytes_read; - state_machine_regs.line += adv; - printf (_(" Advance Line by %s to %d\n"), - dwarf_vmatoa ("d", adv), - state_machine_regs.line); - break; + printf (_("\n The Directory Table (offset 0x%lx):\n"), + (long)(data - start)); - case DW_LNS_set_file: - adv = read_leb128 (data, & bytes_read, 0); - data += bytes_read; - printf (_(" Set File Name to entry %s in the File Name Table\n"), - dwarf_vmatoa ("d", adv)); - state_machine_regs.file = adv; - break; + while (data < end && *data != 0) + { + printf (" %d\t%.*s\n", ++last_dir_entry, (int) (end - data), data); - case DW_LNS_set_column: - uladv = read_leb128 (data, & bytes_read, 0); - data += bytes_read; - printf (_(" Set column to %s\n"), - dwarf_vmatoa ("u", uladv)); - state_machine_regs.column = uladv; - break; + data += strnlen ((char *) data, end - data) + 1; + } - case DW_LNS_negate_stmt: - adv = state_machine_regs.is_stmt; - adv = ! adv; - printf (_(" Set is_stmt to %s\n"), dwarf_vmatoa ("d", adv)); - state_machine_regs.is_stmt = adv; - break; + /* PR 17512: file: 002-132094-0.004. */ + if (data >= end - 1) + break; + } - case DW_LNS_set_basic_block: - printf (_(" Set basic block\n")); - state_machine_regs.basic_block = 1; - break; + /* Skip the NUL at the end of the table. */ + data++; - case DW_LNS_const_add_pc: - uladv = ((255 - linfo.li_opcode_base) / linfo.li_line_range); - if (linfo.li_max_ops_per_insn) - { - uladv *= linfo.li_min_insn_length; - state_machine_regs.address += uladv; - printf (_(" Advance PC by constant %s to 0x%s\n"), - dwarf_vmatoa ("u", uladv), - dwarf_vmatoa ("x", state_machine_regs.address)); - } + /* Display the contents of the File Name table. */ + if (*data == 0) + printf (_("\n The File Name Table is empty.\n")); else { - state_machine_regs.address - += ((state_machine_regs.op_index + uladv) - / linfo.li_max_ops_per_insn) - * linfo.li_min_insn_length; - state_machine_regs.op_index - = (state_machine_regs.op_index + uladv) - % linfo.li_max_ops_per_insn; - printf (_(" Advance PC by constant %s to 0x%s[%d]\n"), - dwarf_vmatoa ("u", uladv), - dwarf_vmatoa ("x", state_machine_regs.address), - state_machine_regs.op_index); + printf (_("\n The File Name Table (offset 0x%lx):\n"), + (long)(data - start)); + printf (_(" Entry\tDir\tTime\tSize\tName\n")); + + while (data < end && *data != 0) + { + unsigned char *name; + unsigned int bytes_read; + + printf (" %d\t", ++state_machine_regs.last_file_entry); + name = data; + data += strnlen ((char *) data, end - data) + 1; + + printf ("%s\t", + dwarf_vmatoa ("u", read_uleb128 (data, & bytes_read, end))); + data += bytes_read; + printf ("%s\t", + dwarf_vmatoa ("u", read_uleb128 (data, & bytes_read, end))); + data += bytes_read; + printf ("%s\t", + dwarf_vmatoa ("u", read_uleb128 (data, & bytes_read, end))); + data += bytes_read; + printf ("%.*s\n", (int)(end - name), name); + + if (data == end) + { + warn (_("Corrupt file name table entry\n")); + break; + } + } } - break; - case DW_LNS_fixed_advance_pc: - uladv = byte_get (data, 2); - data += 2; - state_machine_regs.address += uladv; - state_machine_regs.op_index = 0; - printf (_(" Advance PC by fixed size amount %s to 0x%s\n"), - dwarf_vmatoa ("u", uladv), - dwarf_vmatoa ("x", state_machine_regs.address)); - break; + /* Skip the NUL at the end of the table. */ + data++; + } - case DW_LNS_set_prologue_end: - printf (_(" Set prologue_end to true\n")); - break; + putchar ('\n'); + saved_linfo = linfo; + } - case DW_LNS_set_epilogue_begin: - printf (_(" Set epilogue_begin to true\n")); - break; + /* Now display the statements. */ + if (data >= end_of_sequence) + printf (_(" No Line Number Statements.\n")); + else + { + printf (_(" Line Number Statements:\n")); - case DW_LNS_set_isa: - uladv = read_leb128 (data, & bytes_read, 0); - data += bytes_read; - printf (_(" Set ISA to %s\n"), dwarf_vmatoa ("u", uladv)); - break; + while (data < end_of_sequence) + { + unsigned char op_code; + dwarf_signed_vma adv; + dwarf_vma uladv; + unsigned int bytes_read; - default: - printf (_(" Unknown opcode %d with operands: "), op_code); + printf (" [0x%08lx]", (long)(data - start)); + + op_code = *data++; - for (i = standard_opcodes[op_code - 1]; i > 0 ; --i) + if (op_code >= linfo.li_opcode_base) { - printf ("0x%s%s", dwarf_vmatoa ("x", read_leb128 (data, - &bytes_read, 0)), - i == 1 ? "" : ", "); - data += bytes_read; + op_code -= linfo.li_opcode_base; + uladv = (op_code / linfo.li_line_range); + if (linfo.li_max_ops_per_insn == 1) + { + uladv *= linfo.li_min_insn_length; + state_machine_regs.address += uladv; + if (uladv) + state_machine_regs.view = 0; + printf (_(" Special opcode %d: " + "advance Address by %s to 0x%s%s"), + op_code, dwarf_vmatoa ("u", uladv), + dwarf_vmatoa ("x", state_machine_regs.address), + verbose_view && uladv + ? _(" (reset view)") : ""); + } + else + { + unsigned addrdelta + = ((state_machine_regs.op_index + uladv) + / linfo.li_max_ops_per_insn) + * linfo.li_min_insn_length; + + state_machine_regs.address += addrdelta; + state_machine_regs.op_index + = (state_machine_regs.op_index + uladv) + % linfo.li_max_ops_per_insn; + if (addrdelta) + state_machine_regs.view = 0; + printf (_(" Special opcode %d: " + "advance Address by %s to 0x%s[%d]%s"), + op_code, dwarf_vmatoa ("u", uladv), + dwarf_vmatoa ("x", state_machine_regs.address), + state_machine_regs.op_index, + verbose_view && addrdelta + ? _(" (reset view)") : ""); + } + adv = (op_code % linfo.li_line_range) + linfo.li_line_base; + state_machine_regs.line += adv; + printf (_(" and Line by %s to %d"), + dwarf_vmatoa ("d", adv), state_machine_regs.line); + if (verbose_view || state_machine_regs.view) + printf (_(" (view %u)\n"), state_machine_regs.view); + else + putchar ('\n'); + state_machine_regs.view++; } - putchar ('\n'); - break; + else switch (op_code) + { + case DW_LNS_extended_op: + data += process_extended_line_op (data, linfo.li_default_is_stmt, end); + break; + + case DW_LNS_copy: + printf (_(" Copy")); + if (verbose_view || state_machine_regs.view) + printf (_(" (view %u)\n"), state_machine_regs.view); + else + putchar ('\n'); + state_machine_regs.view++; + break; + + case DW_LNS_advance_pc: + uladv = read_uleb128 (data, & bytes_read, end); + data += bytes_read; + if (linfo.li_max_ops_per_insn == 1) + { + uladv *= linfo.li_min_insn_length; + state_machine_regs.address += uladv; + if (uladv) + state_machine_regs.view = 0; + printf (_(" Advance PC by %s to 0x%s%s\n"), + dwarf_vmatoa ("u", uladv), + dwarf_vmatoa ("x", state_machine_regs.address), + verbose_view && uladv + ? _(" (reset view)") : ""); + } + else + { + unsigned addrdelta + = ((state_machine_regs.op_index + uladv) + / linfo.li_max_ops_per_insn) + * linfo.li_min_insn_length; + state_machine_regs.address + += addrdelta; + state_machine_regs.op_index + = (state_machine_regs.op_index + uladv) + % linfo.li_max_ops_per_insn; + if (addrdelta) + state_machine_regs.view = 0; + printf (_(" Advance PC by %s to 0x%s[%d]%s\n"), + dwarf_vmatoa ("u", uladv), + dwarf_vmatoa ("x", state_machine_regs.address), + state_machine_regs.op_index, + verbose_view && addrdelta + ? _(" (reset view)") : ""); + } + break; + + case DW_LNS_advance_line: + adv = read_sleb128 (data, & bytes_read, end); + data += bytes_read; + state_machine_regs.line += adv; + printf (_(" Advance Line by %s to %d\n"), + dwarf_vmatoa ("d", adv), + state_machine_regs.line); + break; + + case DW_LNS_set_file: + adv = read_uleb128 (data, & bytes_read, end); + data += bytes_read; + printf (_(" Set File Name to entry %s in the File Name Table\n"), + dwarf_vmatoa ("d", adv)); + state_machine_regs.file = adv; + break; + + case DW_LNS_set_column: + uladv = read_uleb128 (data, & bytes_read, end); + data += bytes_read; + printf (_(" Set column to %s\n"), + dwarf_vmatoa ("u", uladv)); + state_machine_regs.column = uladv; + break; + + case DW_LNS_negate_stmt: + adv = state_machine_regs.is_stmt; + adv = ! adv; + printf (_(" Set is_stmt to %s\n"), dwarf_vmatoa ("d", adv)); + state_machine_regs.is_stmt = adv; + break; + + case DW_LNS_set_basic_block: + printf (_(" Set basic block\n")); + state_machine_regs.basic_block = 1; + break; + + case DW_LNS_const_add_pc: + uladv = ((255 - linfo.li_opcode_base) / linfo.li_line_range); + if (linfo.li_max_ops_per_insn) + { + uladv *= linfo.li_min_insn_length; + state_machine_regs.address += uladv; + if (uladv) + state_machine_regs.view = 0; + printf (_(" Advance PC by constant %s to 0x%s%s\n"), + dwarf_vmatoa ("u", uladv), + dwarf_vmatoa ("x", state_machine_regs.address), + verbose_view && uladv + ? _(" (reset view)") : ""); + } + else + { + unsigned addrdelta + = ((state_machine_regs.op_index + uladv) + / linfo.li_max_ops_per_insn) + * linfo.li_min_insn_length; + state_machine_regs.address + += addrdelta; + state_machine_regs.op_index + = (state_machine_regs.op_index + uladv) + % linfo.li_max_ops_per_insn; + if (addrdelta) + state_machine_regs.view = 0; + printf (_(" Advance PC by constant %s to 0x%s[%d]%s\n"), + dwarf_vmatoa ("u", uladv), + dwarf_vmatoa ("x", state_machine_regs.address), + state_machine_regs.op_index, + verbose_view && addrdelta + ? _(" (reset view)") : ""); + } + break; + + case DW_LNS_fixed_advance_pc: + SAFE_BYTE_GET_AND_INC (uladv, data, 2, end); + state_machine_regs.address += uladv; + state_machine_regs.op_index = 0; + printf (_(" Advance PC by fixed size amount %s to 0x%s\n"), + dwarf_vmatoa ("u", uladv), + dwarf_vmatoa ("x", state_machine_regs.address)); + /* Do NOT reset view. */ + break; + + case DW_LNS_set_prologue_end: + printf (_(" Set prologue_end to true\n")); + break; + + case DW_LNS_set_epilogue_begin: + printf (_(" Set epilogue_begin to true\n")); + break; + + case DW_LNS_set_isa: + uladv = read_uleb128 (data, & bytes_read, end); + data += bytes_read; + printf (_(" Set ISA to %s\n"), dwarf_vmatoa ("u", uladv)); + break; + + default: + printf (_(" Unknown opcode %d with operands: "), op_code); + + if (standard_opcodes != NULL) + for (i = standard_opcodes[op_code - 1]; i > 0 ; --i) + { + printf ("0x%s%s", dwarf_vmatoa ("x", read_uleb128 (data, + &bytes_read, end)), + i == 1 ? "" : ", "); + data += bytes_read; + } + putchar ('\n'); + break; + } } + putchar ('\n'); } - putchar ('\n'); } return 1; @@ -2773,12 +3994,14 @@ typedef struct /* Output a decoded representation of the .debug_line section. */ static int -display_debug_lines_decoded (struct dwarf_section *section, - unsigned char *data, - unsigned char *end) +display_debug_lines_decoded (struct dwarf_section * section, + unsigned char * data, + unsigned char * end, + void * fileptr) { - printf (_("Decoded dump of debug contents of section %s:\n\n"), - section->name); + static DWARF2_Internal_LineInfo saved_linfo; + + introduce (section, FALSE); while (data < end) { @@ -2786,200 +4009,372 @@ display_debug_lines_decoded (struct dwarf_section *section, DWARF2_Internal_LineInfo linfo; unsigned char *standard_opcodes; unsigned char *end_of_sequence; - unsigned char *hdrptr; - int initial_length_size; - int offset_size; int i; File_Entry *file_table = NULL; + unsigned int n_files = 0; unsigned char **directory_table = NULL; + dwarf_vma n_directories = 0; - hdrptr = data; - - /* Extract information from the Line Number Program Header. - (section 6.2.4 in the Dwarf3 doc). */ - - /* Get the length of this CU's line number information block. */ - linfo.li_length = byte_get (hdrptr, 4); - hdrptr += 4; - - if (linfo.li_length == 0xffffffff) - { - /* This section is 64-bit DWARF 3. */ - linfo.li_length = byte_get (hdrptr, 8); - hdrptr += 8; - offset_size = 8; - initial_length_size = 12; - } - else - { - offset_size = 4; - initial_length_size = 4; - } - - if (linfo.li_length + initial_length_size > section->size) - { - warn (_("The line info appears to be corrupt - " - "the section is too small\n")); - return 0; - } - - /* Get this CU's Line Number Block version number. */ - linfo.li_version = byte_get (hdrptr, 2); - hdrptr += 2; - if (linfo.li_version != 2 - && linfo.li_version != 3 - && linfo.li_version != 4) - { - warn (_("Only DWARF version 2, 3 and 4 line info is currently " - "supported.\n")); - return 0; - } - - linfo.li_prologue_length = byte_get (hdrptr, offset_size); - hdrptr += offset_size; - linfo.li_min_insn_length = byte_get (hdrptr, 1); - hdrptr++; - if (linfo.li_version >= 4) - { - linfo.li_max_ops_per_insn = byte_get (hdrptr, 1); - hdrptr++; - if (linfo.li_max_ops_per_insn == 0) + if (const_strneq (section->name, ".debug_line.") + /* Note: the following does not apply to .debug_line.dwo sections. + These are full debug_line sections. */ + && strcmp (section->name, ".debug_line.dwo") != 0) + { + /* See comment in display_debug_lines_raw(). */ + end_of_sequence = end; + standard_opcodes = NULL; + linfo = saved_linfo; + /* PR 17531: file: 0522b371. */ + if (linfo.li_line_range == 0) { - warn (_("Invalid maximum operations per insn.\n")); + warn (_("Partial .debug_line. section encountered without a prior full .debug_line section\n")); return 0; } + reset_state_machine (linfo.li_default_is_stmt); } else - linfo.li_max_ops_per_insn = 1; - linfo.li_default_is_stmt = byte_get (hdrptr, 1); - hdrptr++; - linfo.li_line_base = byte_get (hdrptr, 1); - hdrptr++; - linfo.li_line_range = byte_get (hdrptr, 1); - hdrptr++; - linfo.li_opcode_base = byte_get (hdrptr, 1); - hdrptr++; - - /* Sign extend the line base field. */ - linfo.li_line_base <<= 24; - linfo.li_line_base >>= 24; - - /* Find the end of this CU's Line Number Information Block. */ - end_of_sequence = data + linfo.li_length + initial_length_size; - - reset_state_machine (linfo.li_default_is_stmt); - - /* Save a pointer to the contents of the Opcodes table. */ - standard_opcodes = hdrptr; - - /* Traverse the Directory table just to count entries. */ - data = standard_opcodes + linfo.li_opcode_base - 1; - if (*data != 0) - { - unsigned int n_directories = 0; - unsigned char *ptr_directory_table = data; - - while (*data != 0) + { + unsigned char *hdrptr; + + if ((hdrptr = read_debug_line_header (section, data, end, & linfo, + & end_of_sequence)) == NULL) + return 0; + + /* PR 17531: file: 0522b371. */ + if (linfo.li_line_range == 0) + { + warn (_("Line range of 0 is invalid, using 1 instead\n")); + linfo.li_line_range = 1; + } + reset_state_machine (linfo.li_default_is_stmt); + + /* Save a pointer to the contents of the Opcodes table. */ + standard_opcodes = hdrptr; + + /* Traverse the Directory table just to count entries. */ + data = standard_opcodes + linfo.li_opcode_base - 1; + /* PR 20440 */ + if (data >= end) { - data += strlen ((char *) data) + 1; - n_directories++; + warn (_("opcode base of %d extends beyond end of section\n"), + linfo.li_opcode_base); + return 0; } - /* Go through the directory table again to save the directories. */ - directory_table = (unsigned char **) - xmalloc (n_directories * sizeof (unsigned char *)); - - i = 0; - while (*ptr_directory_table != 0) - { - directory_table[i] = ptr_directory_table; - ptr_directory_table += strlen ((char *) ptr_directory_table) + 1; - i++; - } - } - /* Skip the NUL at the end of the table. */ - data++; - - /* Traverse the File Name table just to count the entries. */ - if (*data != 0) - { - unsigned int n_files = 0; - unsigned char *ptr_file_name_table = data; - - while (*data != 0) - { + if (linfo.li_version >= 5) + { + unsigned char *format_start, format_count, *format; + dwarf_vma formati, entryi; unsigned int bytes_read; - /* Skip Name, directory index, last modification time and length - of file. */ - data += strlen ((char *) data) + 1; - read_leb128 (data, & bytes_read, 0); - data += bytes_read; - read_leb128 (data, & bytes_read, 0); - data += bytes_read; - read_leb128 (data, & bytes_read, 0); - data += bytes_read; - - n_files++; - } - - /* Go through the file table again to save the strings. */ - file_table = (File_Entry *) xmalloc (n_files * sizeof (File_Entry)); - - i = 0; - while (*ptr_file_name_table != 0) - { - unsigned int bytes_read; - - file_table[i].name = ptr_file_name_table; - ptr_file_name_table += strlen ((char *) ptr_file_name_table) + 1; - - /* We are not interested in directory, time or size. */ - file_table[i].directory_index = read_leb128 (ptr_file_name_table, - & bytes_read, 0); - ptr_file_name_table += bytes_read; - file_table[i].modification_date = read_leb128 (ptr_file_name_table, - & bytes_read, 0); - ptr_file_name_table += bytes_read; - file_table[i].length = read_leb128 (ptr_file_name_table, & bytes_read, 0); - ptr_file_name_table += bytes_read; - i++; - } - i = 0; - - /* Print the Compilation Unit's name and a header. */ - if (directory_table == NULL) - { - printf (_("CU: %s:\n"), file_table[0].name); - printf (_("File name Line number Starting address\n")); - } - else - { - if (do_wide || strlen ((char *) directory_table[0]) < 76) - printf (_("CU: %s/%s:\n"), directory_table[0], - file_table[0].name); - else - printf ("%s:\n", file_table[0].name); + load_debug_section_with_follow (line_str, fileptr); + + /* Skip directories format. */ + SAFE_BYTE_GET_AND_INC (format_count, data, 1, end); + format_start = data; + for (formati = 0; formati < format_count; formati++) + { + read_uleb128 (data, & bytes_read, end); + data += bytes_read; + read_uleb128 (data, & bytes_read, end); + data += bytes_read; + } + + n_directories = read_uleb128 (data, & bytes_read, end); + data += bytes_read; + if (data == end) + { + warn (_("Corrupt directories list\n")); + break; + } + + directory_table = (unsigned char **) + xmalloc (n_directories * sizeof (unsigned char *)); + + for (entryi = 0; entryi < n_directories; entryi++) + { + unsigned char **pathp = &directory_table[entryi]; + + format = format_start; + for (formati = 0; formati < format_count; formati++) + { + dwarf_vma content_type, form; + dwarf_vma uvalue; + + content_type = read_uleb128 (format, & bytes_read, end); + format += bytes_read; + form = read_uleb128 (format, & bytes_read, end); + format += bytes_read; + if (data == end) + { + warn (_("Corrupt directories list\n")); + break; + } + switch (content_type) + { + case DW_LNCT_path: + switch (form) + { + case DW_FORM_string: + *pathp = data; + break; + case DW_FORM_line_strp: + SAFE_BYTE_GET (uvalue, data, linfo.li_offset_size, + end); + /* Remove const by the cast. */ + *pathp = (unsigned char *) + fetch_indirect_line_string (uvalue); + break; + } + break; + } + data = read_and_display_attr_value (0, form, 0, data, end, + 0, 0, + linfo.li_offset_size, + linfo.li_version, + NULL, 1, section, + NULL, '\t'); + } + if (data == end) + { + warn (_("Corrupt directories list\n")); + break; + } + } + + /* Skip files format. */ + SAFE_BYTE_GET_AND_INC (format_count, data, 1, end); + format_start = data; + for (formati = 0; formati < format_count; formati++) + { + read_uleb128 (data, & bytes_read, end); + data += bytes_read; + read_uleb128 (data, & bytes_read, end); + data += bytes_read; + } + + n_files = read_uleb128 (data, & bytes_read, end); + data += bytes_read; + if (data == end) + { + warn (_("Corrupt file name list\n")); + break; + } + + file_table = (File_Entry *) xcalloc (1, n_files + * sizeof (File_Entry)); + + for (entryi = 0; entryi < n_files; entryi++) + { + File_Entry *file = &file_table[entryi]; + + format = format_start; + for (formati = 0; formati < format_count; formati++) + { + dwarf_vma content_type, form; + dwarf_vma uvalue; + + content_type = read_uleb128 (format, & bytes_read, end); + format += bytes_read; + form = read_uleb128 (format, & bytes_read, end); + format += bytes_read; + if (data == end) + { + warn (_("Corrupt file name list\n")); + break; + } + switch (content_type) + { + case DW_LNCT_path: + switch (form) + { + case DW_FORM_string: + file->name = data; + break; + case DW_FORM_line_strp: + SAFE_BYTE_GET (uvalue, data, linfo.li_offset_size, + end); + /* Remove const by the cast. */ + file->name = (unsigned char *) + fetch_indirect_line_string (uvalue); + break; + } + break; + case DW_LNCT_directory_index: + switch (form) + { + case DW_FORM_data1: + SAFE_BYTE_GET (file->directory_index, data, 1, + end); + break; + case DW_FORM_data2: + SAFE_BYTE_GET (file->directory_index, data, 2, + end); + break; + case DW_FORM_udata: + file->directory_index = read_uleb128 (data, NULL, + end); + break; + } + break; + } + data = read_and_display_attr_value (0, form, 0, data, end, + 0, 0, + linfo.li_offset_size, + linfo.li_version, + NULL, 1, section, + NULL, '\t'); + } + if (data == end) + { + warn (_("Corrupt file name list\n")); + break; + } + } + } + else + { + if (*data != 0) + { + unsigned char *ptr_directory_table = data; - printf (_("File name Line number Starting address\n")); - } - } + while (data < end && *data != 0) + { + data += strnlen ((char *) data, end - data) + 1; + n_directories++; + } + + /* PR 20440 */ + if (data >= end) + { + warn (_("directory table ends unexpectedly\n")); + n_directories = 0; + break; + } + + /* Go through the directory table again to save the directories. */ + directory_table = (unsigned char **) + xmalloc (n_directories * sizeof (unsigned char *)); + + i = 0; + while (*ptr_directory_table != 0) + { + directory_table[i] = ptr_directory_table; + ptr_directory_table += strnlen ((char *) ptr_directory_table, + ptr_directory_table - end) + 1; + i++; + } + } + /* Skip the NUL at the end of the table. */ + data++; + + /* Traverse the File Name table just to count the entries. */ + if (data < end && *data != 0) + { + unsigned char *ptr_file_name_table = data; + + while (data < end && *data != 0) + { + unsigned int bytes_read; + + /* Skip Name, directory index, last modification time and length + of file. */ + data += strnlen ((char *) data, end - data) + 1; + read_uleb128 (data, & bytes_read, end); + data += bytes_read; + read_uleb128 (data, & bytes_read, end); + data += bytes_read; + read_uleb128 (data, & bytes_read, end); + data += bytes_read; + + n_files++; + } + + if (data >= end) + { + warn (_("file table ends unexpectedly\n")); + n_files = 0; + break; + } + + /* Go through the file table again to save the strings. */ + file_table = (File_Entry *) xmalloc (n_files * sizeof (File_Entry)); + + i = 0; + while (*ptr_file_name_table != 0) + { + unsigned int bytes_read; + + file_table[i].name = ptr_file_name_table; + ptr_file_name_table += strnlen ((char *) ptr_file_name_table, + end - ptr_file_name_table) + 1; + + /* We are not interested in directory, time or size. */ + file_table[i].directory_index = read_uleb128 (ptr_file_name_table, + & bytes_read, end); + ptr_file_name_table += bytes_read; + file_table[i].modification_date = read_uleb128 (ptr_file_name_table, + & bytes_read, end); + ptr_file_name_table += bytes_read; + file_table[i].length = read_uleb128 (ptr_file_name_table, & bytes_read, end); + ptr_file_name_table += bytes_read; + i++; + } + i = 0; + } + + /* Skip the NUL at the end of the table. */ + data++; + } + + /* Print the Compilation Unit's name and a header. */ + if (file_table == NULL) + ; + else if (directory_table == NULL) + printf (_("CU: %s:\n"), file_table[0].name); + else + { + unsigned int ix = file_table[0].directory_index; + const char *directory; + + if (ix == 0) + directory = "."; + /* PR 20439 */ + else if (n_directories == 0) + directory = _(""); + else if (ix > n_directories) + { + warn (_("directory index %u > number of directories %s\n"), + ix, dwarf_vmatoa ("u", n_directories)); + directory = _(""); + } + else + directory = (char *) directory_table[ix - 1]; + + if (do_wide || strlen (directory) < 76) + printf (_("CU: %s/%s:\n"), directory, file_table[0].name); + else + printf ("%s:\n", file_table[0].name); + } - /* Skip the NUL at the end of the table. */ - data++; + printf (_("File name Line number Starting address View\n")); + saved_linfo = linfo; + } /* This loop iterates through the Dwarf Line Number Program. */ while (data < end_of_sequence) - { + { unsigned char op_code; - int adv; - unsigned long int uladv; - unsigned int bytes_read; - int is_special_opcode = 0; + int xop; + int adv; + unsigned long int uladv; + unsigned int bytes_read; + int is_special_opcode = 0; - op_code = *data++; + op_code = *data++; + xop = op_code; - if (op_code >= linfo.li_opcode_base) + if (op_code >= linfo.li_opcode_base) { op_code -= linfo.li_opcode_base; uladv = (op_code / linfo.li_line_range); @@ -2987,248 +4382,348 @@ display_debug_lines_decoded (struct dwarf_section *section, { uladv *= linfo.li_min_insn_length; state_machine_regs.address += uladv; + if (uladv) + state_machine_regs.view = 0; } else { + unsigned addrdelta + = ((state_machine_regs.op_index + uladv) + / linfo.li_max_ops_per_insn) + * linfo.li_min_insn_length; state_machine_regs.address - += ((state_machine_regs.op_index + uladv) - / linfo.li_max_ops_per_insn) - * linfo.li_min_insn_length; + += addrdelta; state_machine_regs.op_index = (state_machine_regs.op_index + uladv) - % linfo.li_max_ops_per_insn; + % linfo.li_max_ops_per_insn; + if (addrdelta) + state_machine_regs.view = 0; } - adv = (op_code % linfo.li_line_range) + linfo.li_line_base; - state_machine_regs.line += adv; - is_special_opcode = 1; - } - else switch (op_code) - { - case DW_LNS_extended_op: - { - unsigned int ext_op_code_len; - unsigned char ext_op_code; - unsigned char *op_code_data = data; - - ext_op_code_len = read_leb128 (op_code_data, &bytes_read, 0); - op_code_data += bytes_read; - - if (ext_op_code_len == 0) - { - warn (_("badly formed extended line op encountered!\n")); - break; - } - ext_op_code_len += bytes_read; - ext_op_code = *op_code_data++; - - switch (ext_op_code) - { - case DW_LNE_end_sequence: - reset_state_machine (linfo.li_default_is_stmt); - break; - case DW_LNE_set_address: - state_machine_regs.address = - byte_get (op_code_data, ext_op_code_len - bytes_read - 1); - state_machine_regs.op_index = 0; - break; - case DW_LNE_define_file: - { - unsigned int dir_index = 0; - - ++state_machine_regs.last_file_entry; - op_code_data += strlen ((char *) op_code_data) + 1; - dir_index = read_leb128 (op_code_data, & bytes_read, 0); - op_code_data += bytes_read; - read_leb128 (op_code_data, & bytes_read, 0); - op_code_data += bytes_read; - read_leb128 (op_code_data, & bytes_read, 0); - - printf ("%s:\n", directory_table[dir_index]); - break; - } - default: - printf (_("UNKNOWN: length %d\n"), ext_op_code_len - bytes_read); - break; - } - data += ext_op_code_len; - break; - } - case DW_LNS_copy: - break; - - case DW_LNS_advance_pc: - uladv = read_leb128 (data, & bytes_read, 0); - data += bytes_read; - if (linfo.li_max_ops_per_insn == 1) + adv = (op_code % linfo.li_line_range) + linfo.li_line_base; + state_machine_regs.line += adv; + is_special_opcode = 1; + /* Increment view after printing this row. */ + } + else switch (op_code) + { + case DW_LNS_extended_op: + { + unsigned int ext_op_code_len; + unsigned char ext_op_code; + unsigned char *op_code_data = data; + + ext_op_code_len = read_uleb128 (op_code_data, &bytes_read, + end_of_sequence); + op_code_data += bytes_read; + + if (ext_op_code_len == 0) + { + warn (_("Badly formed extended line op encountered!\n")); + break; + } + ext_op_code_len += bytes_read; + ext_op_code = *op_code_data++; + xop = ext_op_code; + xop = -xop; + + switch (ext_op_code) + { + case DW_LNE_end_sequence: + /* Reset stuff after printing this row. */ + break; + case DW_LNE_set_address: + SAFE_BYTE_GET_AND_INC (state_machine_regs.address, + op_code_data, + ext_op_code_len - bytes_read - 1, + end); + state_machine_regs.op_index = 0; + state_machine_regs.view = 0; + break; + case DW_LNE_define_file: + { + file_table = (File_Entry *) xrealloc + (file_table, (n_files + 1) * sizeof (File_Entry)); + + ++state_machine_regs.last_file_entry; + /* Source file name. */ + file_table[n_files].name = op_code_data; + op_code_data += strlen ((char *) op_code_data) + 1; + /* Directory index. */ + file_table[n_files].directory_index = + read_uleb128 (op_code_data, & bytes_read, + end_of_sequence); + op_code_data += bytes_read; + /* Last modification time. */ + file_table[n_files].modification_date = + read_uleb128 (op_code_data, & bytes_read, + end_of_sequence); + op_code_data += bytes_read; + /* File length. */ + file_table[n_files].length = + read_uleb128 (op_code_data, & bytes_read, + end_of_sequence); + + n_files++; + break; + } + case DW_LNE_set_discriminator: + case DW_LNE_HP_set_sequence: + /* Simply ignored. */ + break; + + default: + printf (_("UNKNOWN (%u): length %d\n"), + ext_op_code, ext_op_code_len - bytes_read); + break; + } + data += ext_op_code_len; + break; + } + case DW_LNS_copy: + /* Increment view after printing this row. */ + break; + + case DW_LNS_advance_pc: + uladv = read_uleb128 (data, & bytes_read, end); + data += bytes_read; + if (linfo.li_max_ops_per_insn == 1) + { + uladv *= linfo.li_min_insn_length; + state_machine_regs.address += uladv; + if (uladv) + state_machine_regs.view = 0; + } + else + { + unsigned addrdelta + = ((state_machine_regs.op_index + uladv) + / linfo.li_max_ops_per_insn) + * linfo.li_min_insn_length; + state_machine_regs.address + += addrdelta; + state_machine_regs.op_index + = (state_machine_regs.op_index + uladv) + % linfo.li_max_ops_per_insn; + if (addrdelta) + state_machine_regs.view = 0; + } + break; + + case DW_LNS_advance_line: + adv = read_sleb128 (data, & bytes_read, end); + data += bytes_read; + state_machine_regs.line += adv; + break; + + case DW_LNS_set_file: + adv = read_uleb128 (data, & bytes_read, end); + data += bytes_read; + state_machine_regs.file = adv; + + { + unsigned file = state_machine_regs.file - 1; + unsigned dir; + + if (file_table == NULL || n_files == 0) + printf (_("\n [Use file table entry %d]\n"), file); + /* PR 20439 */ + else if (file >= n_files) + { + warn (_("file index %u > number of files %u\n"), file + 1, n_files); + printf (_("\n "), file); + } + else if ((dir = file_table[file].directory_index) == 0) + /* If directory index is 0, that means current directory. */ + printf ("\n./%s:[++]\n", file_table[file].name); + else if (directory_table == NULL || n_directories == 0) + printf (_("\n [Use file %s in directory table entry %d]\n"), + file_table[file].name, dir); + /* PR 20439 */ + else if (dir > n_directories) + { + warn (_("directory index %u > number of directories %s\n"), + dir, dwarf_vmatoa ("u", n_directories)); + printf (_("\n \n"), dir); + } + else + printf ("\n%s/%s:\n", + /* The directory index starts counting at 1. */ + directory_table[dir - 1], file_table[file].name); + } + break; + + case DW_LNS_set_column: + uladv = read_uleb128 (data, & bytes_read, end); + data += bytes_read; + state_machine_regs.column = uladv; + break; + + case DW_LNS_negate_stmt: + adv = state_machine_regs.is_stmt; + adv = ! adv; + state_machine_regs.is_stmt = adv; + break; + + case DW_LNS_set_basic_block: + state_machine_regs.basic_block = 1; + break; + + case DW_LNS_const_add_pc: + uladv = ((255 - linfo.li_opcode_base) / linfo.li_line_range); + if (linfo.li_max_ops_per_insn == 1) + { + uladv *= linfo.li_min_insn_length; + state_machine_regs.address += uladv; + if (uladv) + state_machine_regs.view = 0; + } + else + { + unsigned addrdelta + = ((state_machine_regs.op_index + uladv) + / linfo.li_max_ops_per_insn) + * linfo.li_min_insn_length; + state_machine_regs.address + += addrdelta; + state_machine_regs.op_index + = (state_machine_regs.op_index + uladv) + % linfo.li_max_ops_per_insn; + if (addrdelta) + state_machine_regs.view = 0; + } + break; + + case DW_LNS_fixed_advance_pc: + SAFE_BYTE_GET_AND_INC (uladv, data, 2, end); + state_machine_regs.address += uladv; + state_machine_regs.op_index = 0; + /* Do NOT reset view. */ + break; + + case DW_LNS_set_prologue_end: + break; + + case DW_LNS_set_epilogue_begin: + break; + + case DW_LNS_set_isa: + uladv = read_uleb128 (data, & bytes_read, end); + data += bytes_read; + printf (_(" Set ISA to %lu\n"), uladv); + break; + + default: + printf (_(" Unknown opcode %d with operands: "), op_code); + + if (standard_opcodes != NULL) + for (i = standard_opcodes[op_code - 1]; i > 0 ; --i) + { + printf ("0x%s%s", dwarf_vmatoa ("x", read_uleb128 (data, + &bytes_read, end)), + i == 1 ? "" : ", "); + data += bytes_read; + } + putchar ('\n'); + break; + } + + /* Only Special opcodes, DW_LNS_copy and DW_LNE_end_sequence adds a row + to the DWARF address/line matrix. */ + if ((is_special_opcode) || (xop == -DW_LNE_end_sequence) + || (xop == DW_LNS_copy)) + { + const unsigned int MAX_FILENAME_LENGTH = 35; + char *fileName; + char *newFileName = NULL; + size_t fileNameLength; + + if (file_table) { - uladv *= linfo.li_min_insn_length; - state_machine_regs.address += uladv; + unsigned indx = state_machine_regs.file - 1; + /* PR 20439 */ + if (indx >= n_files) + { + warn (_("corrupt file index %u encountered\n"), indx); + fileName = _(""); + } + else + fileName = (char *) file_table[indx].name; } else + fileName = _(""); + + fileNameLength = strlen (fileName); + + if ((fileNameLength > MAX_FILENAME_LENGTH) && (!do_wide)) { - state_machine_regs.address - += ((state_machine_regs.op_index + uladv) - / linfo.li_max_ops_per_insn) - * linfo.li_min_insn_length; - state_machine_regs.op_index - = (state_machine_regs.op_index + uladv) - % linfo.li_max_ops_per_insn; - } - break; - - case DW_LNS_advance_line: - adv = read_sleb128 (data, & bytes_read); - data += bytes_read; - state_machine_regs.line += adv; - break; - - case DW_LNS_set_file: - adv = read_leb128 (data, & bytes_read, 0); - data += bytes_read; - state_machine_regs.file = adv; - if (file_table[state_machine_regs.file - 1].directory_index == 0) - { - /* If directory index is 0, that means current directory. */ - printf ("\n./%s:[++]\n", - file_table[state_machine_regs.file - 1].name); - } - else - { - /* The directory index starts counting at 1. */ - printf ("\n%s/%s:\n", - directory_table[file_table[state_machine_regs.file - 1].directory_index - 1], - file_table[state_machine_regs.file - 1].name); - } - break; - - case DW_LNS_set_column: - uladv = read_leb128 (data, & bytes_read, 0); - data += bytes_read; - state_machine_regs.column = uladv; - break; - - case DW_LNS_negate_stmt: - adv = state_machine_regs.is_stmt; - adv = ! adv; - state_machine_regs.is_stmt = adv; - break; - - case DW_LNS_set_basic_block: - state_machine_regs.basic_block = 1; - break; - - case DW_LNS_const_add_pc: - uladv = ((255 - linfo.li_opcode_base) / linfo.li_line_range); - if (linfo.li_max_ops_per_insn == 1) - { - uladv *= linfo.li_min_insn_length; - state_machine_regs.address += uladv; + newFileName = (char *) xmalloc (MAX_FILENAME_LENGTH + 1); + /* Truncate file name */ + strncpy (newFileName, + fileName + fileNameLength - MAX_FILENAME_LENGTH, + MAX_FILENAME_LENGTH + 1); } else { - state_machine_regs.address - += ((state_machine_regs.op_index + uladv) - / linfo.li_max_ops_per_insn) - * linfo.li_min_insn_length; - state_machine_regs.op_index - = (state_machine_regs.op_index + uladv) - % linfo.li_max_ops_per_insn; + newFileName = (char *) xmalloc (fileNameLength + 1); + strncpy (newFileName, fileName, fileNameLength + 1); } - break; - - case DW_LNS_fixed_advance_pc: - uladv = byte_get (data, 2); - data += 2; - state_machine_regs.address += uladv; - state_machine_regs.op_index = 0; - break; - - case DW_LNS_set_prologue_end: - break; - - case DW_LNS_set_epilogue_begin: - break; - - case DW_LNS_set_isa: - uladv = read_leb128 (data, & bytes_read, 0); - data += bytes_read; - printf (_(" Set ISA to %lu\n"), uladv); - break; - - default: - printf (_(" Unknown opcode %d with operands: "), op_code); - - for (i = standard_opcodes[op_code - 1]; i > 0 ; --i) - { - printf ("0x%s%s", dwarf_vmatoa ("x", read_leb128 (data, - &bytes_read, 0)), - i == 1 ? "" : ", "); - data += bytes_read; - } - putchar ('\n'); - break; - } - - /* Only Special opcodes, DW_LNS_copy and DW_LNE_end_sequence adds a row - to the DWARF address/line matrix. */ - if ((is_special_opcode) || (op_code == DW_LNE_end_sequence) - || (op_code == DW_LNS_copy)) - { - const unsigned int MAX_FILENAME_LENGTH = 35; - char *fileName = (char *)file_table[state_machine_regs.file - 1].name; - char *newFileName = NULL; - size_t fileNameLength = strlen (fileName); - - if ((fileNameLength > MAX_FILENAME_LENGTH) && (!do_wide)) - { - newFileName = (char *) xmalloc (MAX_FILENAME_LENGTH + 1); - /* Truncate file name */ - strncpy (newFileName, - fileName + fileNameLength - MAX_FILENAME_LENGTH, - MAX_FILENAME_LENGTH + 1); - } - else - { - newFileName = (char *) xmalloc (fileNameLength + 1); - strncpy (newFileName, fileName, fileNameLength + 1); - } - - if (!do_wide || (fileNameLength <= MAX_FILENAME_LENGTH)) - { + + if (!do_wide || (fileNameLength <= MAX_FILENAME_LENGTH)) + { if (linfo.li_max_ops_per_insn == 1) - printf ("%-35s %11d %#18" DWARF_VMA_FMT "x\n", + printf ("%-35s %11d %#18" DWARF_VMA_FMT "x", newFileName, state_machine_regs.line, state_machine_regs.address); else - printf ("%-35s %11d %#18" DWARF_VMA_FMT "x[%d]\n", + printf ("%-35s %11d %#18" DWARF_VMA_FMT "x[%d]", newFileName, state_machine_regs.line, state_machine_regs.address, state_machine_regs.op_index); - } - else - { + } + else + { if (linfo.li_max_ops_per_insn == 1) - printf ("%s %11d %#18" DWARF_VMA_FMT "x\n", + printf ("%s %11d %#18" DWARF_VMA_FMT "x", newFileName, state_machine_regs.line, state_machine_regs.address); else - printf ("%s %11d %#18" DWARF_VMA_FMT "x[%d]\n", + printf ("%s %11d %#18" DWARF_VMA_FMT "x[%d]", newFileName, state_machine_regs.line, state_machine_regs.address, state_machine_regs.op_index); - } + } - if (op_code == DW_LNE_end_sequence) - printf ("\n"); + if (state_machine_regs.view) + printf (" %6u\n", state_machine_regs.view); + else + putchar ('\n'); + state_machine_regs.view++; + + if (xop == -DW_LNE_end_sequence) + { + reset_state_machine (linfo.li_default_is_stmt); + putchar ('\n'); + } + + free (newFileName); + } + } + + if (file_table) + { + free (file_table); + file_table = NULL; + n_files = 0; + } + + if (directory_table) + { + free (directory_table); + directory_table = NULL; + n_directories = 0; + } - free (newFileName); - } - } - free (file_table); - file_table = NULL; - free (directory_table); - directory_table = NULL; putchar ('\n'); } @@ -3236,7 +4731,7 @@ display_debug_lines_decoded (struct dwarf_section *section, } static int -display_debug_lines (struct dwarf_section *section, void *file ATTRIBUTE_UNUSED) +display_debug_lines (struct dwarf_section *section, void *file) { unsigned char *data = section->start; unsigned char *end = data + section->size; @@ -3247,10 +4742,10 @@ display_debug_lines (struct dwarf_section *section, void *file ATTRIBUTE_UNUSED) do_debug_lines |= FLAG_DEBUG_LINES_RAW; if (do_debug_lines & FLAG_DEBUG_LINES_RAW) - retValRaw = display_debug_lines_raw (section, data, end); + retValRaw = display_debug_lines_raw (section, data, end, file); if (do_debug_lines & FLAG_DEBUG_LINES_DECODED) - retValDecoded = display_debug_lines_decoded (section, data, end); + retValDecoded = display_debug_lines_decoded (section, data, end, file); if (!retValRaw || !retValDecoded) return 0; @@ -3273,9 +4768,29 @@ find_debug_info_for_offset (unsigned long offset) return NULL; } +static const char * +get_gdb_index_symbol_kind_name (gdb_index_symbol_kind kind) +{ + /* See gdb/gdb-index.h. */ + static const char * const kinds[] = + { + N_ ("no info"), + N_ ("type"), + N_ ("variable"), + N_ ("function"), + N_ ("other"), + N_ ("unused5"), + N_ ("unused6"), + N_ ("unused7") + }; + + return _ (kinds[kind]); +} + static int -display_debug_pubnames (struct dwarf_section *section, - void *file ATTRIBUTE_UNUSED) +display_debug_pubnames_worker (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED, + int is_gnu) { DWARF2_Internal_PubNames names; unsigned char *start = section->start; @@ -3285,22 +4800,18 @@ display_debug_pubnames (struct dwarf_section *section, we test for that later on. */ load_debug_info (file); - printf (_("Contents of the %s section:\n\n"), section->name); + introduce (section, FALSE); while (start < end) { unsigned char *data; - unsigned long offset; - int offset_size, initial_length_size; - - data = start; + unsigned long sec_off; + unsigned int offset_size, initial_length_size; - names.pn_length = byte_get (data, 4); - data += 4; + SAFE_BYTE_GET_AND_INC (names.pn_length, start, 4, end); if (names.pn_length == 0xffffffff) { - names.pn_length = byte_get (data, 8); - data += 8; + SAFE_BYTE_GET_AND_INC (names.pn_length, start, 8, end); offset_size = 8; initial_length_size = 12; } @@ -3310,11 +4821,22 @@ display_debug_pubnames (struct dwarf_section *section, initial_length_size = 4; } - names.pn_version = byte_get (data, 2); - data += 2; + sec_off = start - section->start; + if (sec_off + names.pn_length < sec_off + || sec_off + names.pn_length > section->size) + { + warn (_("Debug info is corrupted, %s header at %#lx has length %s\n"), + section->name, + sec_off - initial_length_size, + dwarf_vmatoa ("x", names.pn_length)); + break; + } + + data = start; + start += names.pn_length; - names.pn_offset = byte_get (data, offset_size); - data += offset_size; + SAFE_BYTE_GET_AND_INC (names.pn_version, data, 2, end); + SAFE_BYTE_GET_AND_INC (names.pn_offset, data, offset_size, end); if (num_debug_info_entries != DEBUG_INFO_UNAVAILABLE && num_debug_info_entries > 0 @@ -3322,10 +4844,16 @@ display_debug_pubnames (struct dwarf_section *section, warn (_(".debug_info offset of 0x%lx in %s section does not point to a CU header.\n"), (unsigned long) names.pn_offset, section->name); - names.pn_size = byte_get (data, offset_size); - data += offset_size; + SAFE_BYTE_GET_AND_INC (names.pn_size, data, offset_size, end); - start += names.pn_length + initial_length_size; + printf (_(" Length: %ld\n"), + (long) names.pn_length); + printf (_(" Version: %d\n"), + names.pn_version); + printf (_(" Offset into .debug_info section: 0x%lx\n"), + (unsigned long) names.pn_offset); + printf (_(" Size of area in .debug_info section: %ld\n"), + (long) names.pn_size); if (names.pn_version != 2 && names.pn_version != 3) { @@ -3340,35 +4868,74 @@ display_debug_pubnames (struct dwarf_section *section, continue; } - printf (_(" Length: %ld\n"), - (long) names.pn_length); - printf (_(" Version: %d\n"), - names.pn_version); - printf (_(" Offset into .debug_info section: 0x%lx\n"), - (unsigned long) names.pn_offset); - printf (_(" Size of area in .debug_info section: %ld\n"), - (long) names.pn_size); - - printf (_("\n Offset\tName\n")); + if (is_gnu) + printf (_("\n Offset Kind Name\n")); + else + printf (_("\n Offset\tName\n")); - do + while (1) { - offset = byte_get (data, offset_size); + bfd_size_type maxprint; + dwarf_vma offset; - if (offset != 0) + SAFE_BYTE_GET (offset, data, offset_size, end); + + if (offset == 0) + break; + + data += offset_size; + if (data >= end) + break; + maxprint = (end - data) - 1; + + if (is_gnu) { - data += offset_size; - printf (" %-6lx\t%s\n", offset, data); - data += strlen ((char *) data) + 1; + unsigned int kind_data; + gdb_index_symbol_kind kind; + const char *kind_name; + int is_static; + + SAFE_BYTE_GET (kind_data, data, 1, end); + data++; + maxprint --; + /* GCC computes the kind as the upper byte in the CU index + word, and then right shifts it by the CU index size. + Left shift KIND to where the gdb-index.h accessor macros + can use it. */ + kind_data <<= GDB_INDEX_CU_BITSIZE; + kind = GDB_INDEX_SYMBOL_KIND_VALUE (kind_data); + kind_name = get_gdb_index_symbol_kind_name (kind); + is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (kind_data); + printf (" %-6lx %s,%-10s %.*s\n", + (unsigned long) offset, is_static ? _("s") : _("g"), + kind_name, (int) maxprint, data); } + else + printf (" %-6lx\t%.*s\n", + (unsigned long) offset, (int) maxprint, data); + + data += strnlen ((char *) data, maxprint) + 1; + if (data >= end) + break; } - while (offset != 0); } printf ("\n"); return 1; } +static int +display_debug_pubnames (struct dwarf_section *section, void *file) +{ + return display_debug_pubnames_worker (section, file, 0); +} + +static int +display_debug_gnu_pubnames (struct dwarf_section *section, void *file) +{ + return display_debug_pubnames_worker (section, file, 1); +} + static int display_debug_macinfo (struct dwarf_section *section, void *file ATTRIBUTE_UNUSED) @@ -3379,12 +4946,12 @@ display_debug_macinfo (struct dwarf_section *section, unsigned int bytes_read; enum dwarf_macinfo_record_type op; - printf (_("Contents of the %s section:\n\n"), section->name); + introduce (section, FALSE); while (curr < end) { unsigned int lineno; - const char *string; + const unsigned char *string; op = (enum dwarf_macinfo_record_type) *curr; curr++; @@ -3395,9 +4962,9 @@ display_debug_macinfo (struct dwarf_section *section, { unsigned int filenum; - lineno = read_leb128 (curr, & bytes_read, 0); + lineno = read_uleb128 (curr, & bytes_read, end); curr += bytes_read; - filenum = read_leb128 (curr, & bytes_read, 0); + filenum = read_uleb128 (curr, & bytes_read, end); curr += bytes_read; printf (_(" DW_MACINFO_start_file - lineno: %d filenum: %d\n"), @@ -3410,19 +4977,19 @@ display_debug_macinfo (struct dwarf_section *section, break; case DW_MACINFO_define: - lineno = read_leb128 (curr, & bytes_read, 0); + lineno = read_uleb128 (curr, & bytes_read, end); curr += bytes_read; - string = (char *) curr; - curr += strlen (string) + 1; + string = curr; + curr += strnlen ((char *) string, end - string) + 1; printf (_(" DW_MACINFO_define - lineno : %d macro : %s\n"), lineno, string); break; case DW_MACINFO_undef: - lineno = read_leb128 (curr, & bytes_read, 0); + lineno = read_uleb128 (curr, & bytes_read, end); curr += bytes_read; - string = (char *) curr; - curr += strlen (string) + 1; + string = curr; + curr += strnlen ((char *) string, end - string) + 1; printf (_(" DW_MACINFO_undef - lineno : %d macro : %s\n"), lineno, string); break; @@ -3431,10 +4998,10 @@ display_debug_macinfo (struct dwarf_section *section, { unsigned int constant; - constant = read_leb128 (curr, & bytes_read, 0); + constant = read_uleb128 (curr, & bytes_read, end); curr += bytes_read; - string = (char *) curr; - curr += strlen (string) + 1; + string = curr; + curr += strnlen ((char *) string, end - string) + 1; printf (_(" DW_MACINFO_vendor_ext - constant : %d string : %s\n"), constant, string); } @@ -3445,1878 +5012,5061 @@ display_debug_macinfo (struct dwarf_section *section, return 1; } -static int -display_debug_abbrev (struct dwarf_section *section, - void *file ATTRIBUTE_UNUSED) +/* Given LINE_OFFSET into the .debug_line section, attempt to return + filename and dirname corresponding to file name table entry with index + FILEIDX. Return NULL on failure. */ + +static unsigned char * +get_line_filename_and_dirname (dwarf_vma line_offset, + dwarf_vma fileidx, + unsigned char **dir_name) { - abbrev_entry *entry; - unsigned char *start = section->start; - unsigned char *end = start + section->size; + struct dwarf_section *section = &debug_displays [line].section; + unsigned char *hdrptr, *dirtable, *file_name; + unsigned int offset_size, initial_length_size; + unsigned int version, opcode_base, bytes_read; + dwarf_vma length, diridx; + const unsigned char * end; + + *dir_name = NULL; + if (section->start == NULL + || line_offset >= section->size + || fileidx == 0) + return NULL; - printf (_("Contents of the %s section:\n\n"), section->name); + hdrptr = section->start + line_offset; + end = section->start + section->size; - do + SAFE_BYTE_GET_AND_INC (length, hdrptr, 4, end); + if (length == 0xffffffff) { - free_abbrevs (); - - start = process_abbrev_section (start, end); - - if (first_abbrev == NULL) - continue; + /* This section is 64-bit DWARF 3. */ + SAFE_BYTE_GET_AND_INC (length, hdrptr, 8, end); + offset_size = 8; + initial_length_size = 12; + } + else + { + offset_size = 4; + initial_length_size = 4; + } + if (length + initial_length_size < length + || length + initial_length_size > section->size) + return NULL; - printf (_(" Number TAG\n")); + SAFE_BYTE_GET_AND_INC (version, hdrptr, 2, end); + if (version != 2 && version != 3 && version != 4) + return NULL; + hdrptr += offset_size + 1;/* Skip prologue_length and min_insn_length. */ + if (version >= 4) + hdrptr++; /* Skip max_ops_per_insn. */ + hdrptr += 3; /* Skip default_is_stmt, line_base, line_range. */ - for (entry = first_abbrev; entry; entry = entry->next) - { - abbrev_attr *attr; + SAFE_BYTE_GET_AND_INC (opcode_base, hdrptr, 1, end); + if (opcode_base == 0) + return NULL; - printf (" %ld %s [%s]\n", - entry->entry, - get_TAG_name (entry->tag), - entry->children ? _("has children") : _("no children")); + hdrptr += opcode_base - 1; + if (hdrptr >= end) + return NULL; - for (attr = entry->first_attr; attr; attr = attr->next) - printf (" %-18s %s\n", - get_AT_name (attr->attribute), - get_FORM_name (attr->form)); - } + dirtable = hdrptr; + /* Skip over dirname table. */ + while (*hdrptr != '\0') + { + hdrptr += strnlen ((char *) hdrptr, end - hdrptr) + 1; + if (hdrptr >= end) + return NULL; } - while (start); + hdrptr++; /* Skip the NUL at the end of the table. */ - printf ("\n"); + /* Now skip over preceding filename table entries. */ + for (; hdrptr < end && *hdrptr != '\0' && fileidx > 1; fileidx--) + { + hdrptr += strnlen ((char *) hdrptr, end - hdrptr) + 1; + read_uleb128 (hdrptr, &bytes_read, end); + hdrptr += bytes_read; + read_uleb128 (hdrptr, &bytes_read, end); + hdrptr += bytes_read; + read_uleb128 (hdrptr, &bytes_read, end); + hdrptr += bytes_read; + } + if (hdrptr >= end || *hdrptr == '\0') + return NULL; - return 1; + file_name = hdrptr; + hdrptr += strnlen ((char *) hdrptr, end - hdrptr) + 1; + if (hdrptr >= end) + return NULL; + diridx = read_uleb128 (hdrptr, &bytes_read, end); + if (diridx == 0) + return file_name; + for (; dirtable < end && *dirtable != '\0' && diridx > 1; diridx--) + dirtable += strnlen ((char *) dirtable, end - dirtable) + 1; + if (dirtable >= end || *dirtable == '\0') + return NULL; + *dir_name = dirtable; + return file_name; } -/* Sort array of indexes in ascending order of loc_offsets[idx]. */ - -static dwarf_vma *loc_offsets; - static int -loc_offsets_compar (const void *ap, const void *bp) +display_debug_macro (struct dwarf_section *section, + void *file) { - dwarf_vma a = loc_offsets[*(const unsigned int *) ap]; - dwarf_vma b = loc_offsets[*(const unsigned int *) bp]; + unsigned char *start = section->start; + unsigned char *end = start + section->size; + unsigned char *curr = start; + unsigned char *extended_op_buf[256]; + unsigned int bytes_read; - return (a > b) - (b > a); -} + load_debug_section_with_follow (str, file); + load_debug_section_with_follow (line, file); -static int -display_debug_loc (struct dwarf_section *section, void *file) -{ - unsigned char *start = section->start; - unsigned char *section_end; - unsigned long bytes; - unsigned char *section_begin = start; - unsigned int num_loc_list = 0; - unsigned long last_offset = 0; - unsigned int first = 0; - unsigned int i; - unsigned int j; - unsigned int k; - int seen_first_offset = 0; - int locs_sorted = 1; - unsigned char *next; - unsigned int *array = NULL; - - bytes = section->size; - section_end = start + bytes; - - if (bytes == 0) - { - printf (_("\nThe %s section is empty.\n"), section->name); - return 0; - } - - if (load_debug_info (file) == 0) - { - warn (_("Unable to load/parse the .debug_info section, so cannot interpret the %s section.\n"), - section->name); - return 0; - } + introduce (section, FALSE); - /* Check the order of location list in .debug_info section. If - offsets of location lists are in the ascending order, we can - use `debug_information' directly. */ - for (i = 0; i < num_debug_info_entries; i++) + while (curr < end) { - unsigned int num; - - num = debug_information [i].num_loc_offsets; - if (num > num_loc_list) - num_loc_list = num; + unsigned int lineno, version, flags; + unsigned int offset_size = 4; + const unsigned char *string; + dwarf_vma line_offset = 0, sec_offset = curr - start, offset; + unsigned char **extended_ops = NULL; + + SAFE_BYTE_GET_AND_INC (version, curr, 2, end); + if (version != 4 && version != 5) + { + error (_("Only GNU extension to DWARF 4 or 5 of %s is currently supported.\n"), + section->name); + return 0; + } - /* Check if we can use `debug_information' directly. */ - if (locs_sorted && num != 0) + SAFE_BYTE_GET_AND_INC (flags, curr, 1, end); + if (flags & 1) + offset_size = 8; + printf (_(" Offset: 0x%lx\n"), + (unsigned long) sec_offset); + printf (_(" Version: %d\n"), version); + printf (_(" Offset size: %d\n"), offset_size); + if (flags & 2) { - if (!seen_first_offset) - { - /* This is the first location list. */ - last_offset = debug_information [i].loc_offsets [0]; - first = i; - seen_first_offset = 1; - j = 1; - } - else - j = 0; + SAFE_BYTE_GET_AND_INC (line_offset, curr, offset_size, end); + printf (_(" Offset into .debug_line: 0x%lx\n"), + (unsigned long) line_offset); + } + if (flags & 4) + { + unsigned int i, count, op; + dwarf_vma nargs, n; - for (; j < num; j++) + SAFE_BYTE_GET_AND_INC (count, curr, 1, end); + + memset (extended_op_buf, 0, sizeof (extended_op_buf)); + extended_ops = extended_op_buf; + if (count) { - if (last_offset > - debug_information [i].loc_offsets [j]) + printf (_(" Extension opcode arguments:\n")); + for (i = 0; i < count; i++) { - locs_sorted = 0; - break; + SAFE_BYTE_GET_AND_INC (op, curr, 1, end); + extended_ops[op] = curr; + nargs = read_uleb128 (curr, &bytes_read, end); + curr += bytes_read; + if (nargs == 0) + printf (_(" DW_MACRO_%02x has no arguments\n"), op); + else + { + printf (_(" DW_MACRO_%02x arguments: "), op); + for (n = 0; n < nargs; n++) + { + unsigned int form; + + SAFE_BYTE_GET_AND_INC (form, curr, 1, end); + printf ("%s%s", get_FORM_name (form), + n == nargs - 1 ? "\n" : ", "); + switch (form) + { + case DW_FORM_data1: + case DW_FORM_data2: + case DW_FORM_data4: + case DW_FORM_data8: + case DW_FORM_sdata: + case DW_FORM_udata: + case DW_FORM_block: + case DW_FORM_block1: + case DW_FORM_block2: + case DW_FORM_block4: + case DW_FORM_flag: + case DW_FORM_string: + case DW_FORM_strp: + case DW_FORM_sec_offset: + break; + default: + error (_("Invalid extension opcode form %s\n"), + get_FORM_name (form)); + return 0; + } + } + } } - last_offset = debug_information [i].loc_offsets [j]; } } - } - - if (!seen_first_offset) - error (_("No location lists in .debug_info section!\n")); - - /* DWARF sections under Mach-O have non-zero addresses. */ - if (debug_information [first].num_loc_offsets > 0 - && debug_information [first].loc_offsets [0] != section->address) - warn (_("Location lists in %s section start at 0x%s\n"), - section->name, - dwarf_vmatoa ("x", debug_information [first].loc_offsets [0])); - - if (!locs_sorted) - array = (unsigned int *) xcmalloc (num_loc_list, sizeof (unsigned int)); - printf (_("Contents of the %s section:\n\n"), section->name); - printf (_(" Offset Begin End Expression\n")); - - seen_first_offset = 0; - for (i = first; i < num_debug_info_entries; i++) - { - dwarf_vma begin; - dwarf_vma end; - unsigned short length; - unsigned long offset; - unsigned int pointer_size; - unsigned int offset_size; - int dwarf_version; - unsigned long cu_offset; - unsigned long base_address; - int need_frame_base; - int has_frame_base; - - pointer_size = debug_information [i].pointer_size; - cu_offset = debug_information [i].cu_offset; - offset_size = debug_information [i].offset_size; - dwarf_version = debug_information [i].dwarf_version; - if (!locs_sorted) - { - for (k = 0; k < debug_information [i].num_loc_offsets; k++) - array[k] = k; - loc_offsets = debug_information [i].loc_offsets; - qsort (array, debug_information [i].num_loc_offsets, - sizeof (*array), loc_offsets_compar); - } + printf ("\n"); - for (k = 0; k < debug_information [i].num_loc_offsets; k++) + while (1) { - j = locs_sorted ? k : array[k]; - if (k - && debug_information [i].loc_offsets [locs_sorted - ? k - 1 : array [k - 1]] - == debug_information [i].loc_offsets [j]) - continue; - has_frame_base = debug_information [i].have_frame_base [j]; - /* DWARF sections under Mach-O have non-zero addresses. */ - offset = debug_information [i].loc_offsets [j] - section->address; - next = section_begin + offset; - base_address = debug_information [i].base_address; + unsigned int op; - if (!seen_first_offset) - seen_first_offset = 1; - else + if (curr >= end) { - if (start < next) - warn (_("There is a hole [0x%lx - 0x%lx] in .debug_loc section.\n"), - (unsigned long) (start - section_begin), - (unsigned long) (next - section_begin)); - else if (start > next) - warn (_("There is an overlap [0x%lx - 0x%lx] in .debug_loc section.\n"), - (unsigned long) (start - section_begin), - (unsigned long) (next - section_begin)); + error (_(".debug_macro section not zero terminated\n")); + return 0; } - start = next; - if (offset >= bytes) - { - warn (_("Offset 0x%lx is bigger than .debug_loc section size.\n"), - offset); - continue; - } + SAFE_BYTE_GET_AND_INC (op, curr, 1, end); + if (op == 0) + break; - while (1) + switch (op) { - if (start + 2 * pointer_size > section_end) - { - warn (_("Location list starting at offset 0x%lx is not terminated.\n"), - offset); - break; - } - - /* Note: we use sign extension here in order to be sure that - we can detect the -1 escape value. Sign extension into the - top 32 bits of a 32-bit address will not affect the values - that we display since we always show hex values, and always - the bottom 32-bits. */ - begin = byte_get_signed (start, pointer_size); - start += pointer_size; - end = byte_get_signed (start, pointer_size); - start += pointer_size; - - printf (" %8.8lx ", offset); - - if (begin == 0 && end == 0) - { - printf (_("\n")); - break; - } + case DW_MACRO_start_file: + { + unsigned int filenum; + unsigned char *file_name = NULL, *dir_name = NULL; + + lineno = read_uleb128 (curr, &bytes_read, end); + curr += bytes_read; + filenum = read_uleb128 (curr, &bytes_read, end); + curr += bytes_read; + + if ((flags & 2) == 0) + error (_("DW_MACRO_start_file used, but no .debug_line offset provided.\n")); + else + file_name + = get_line_filename_and_dirname (line_offset, filenum, + &dir_name); + if (file_name == NULL) + printf (_(" DW_MACRO_start_file - lineno: %d filenum: %d\n"), + lineno, filenum); + else + printf (_(" DW_MACRO_start_file - lineno: %d filenum: %d filename: %s%s%s\n"), + lineno, filenum, + dir_name != NULL ? (const char *) dir_name : "", + dir_name != NULL ? "/" : "", file_name); + } + break; - /* Check base address specifiers. */ - if (begin == (dwarf_vma) -1 && end != (dwarf_vma) -1) - { - base_address = end; - print_dwarf_vma (begin, pointer_size); - print_dwarf_vma (end, pointer_size); - printf (_("(base address)\n")); - continue; - } + case DW_MACRO_end_file: + printf (_(" DW_MACRO_end_file\n")); + break; - if (start + 2 > section_end) - { - warn (_("Location list starting at offset 0x%lx is not terminated.\n"), - offset); - break; - } + case DW_MACRO_define: + lineno = read_uleb128 (curr, &bytes_read, end); + curr += bytes_read; + string = curr; + curr += strnlen ((char *) string, end - string) + 1; + printf (_(" DW_MACRO_define - lineno : %d macro : %s\n"), + lineno, string); + break; - length = byte_get (start, 2); - start += 2; + case DW_MACRO_undef: + lineno = read_uleb128 (curr, &bytes_read, end); + curr += bytes_read; + string = curr; + curr += strnlen ((char *) string, end - string) + 1; + printf (_(" DW_MACRO_undef - lineno : %d macro : %s\n"), + lineno, string); + break; - if (start + length > section_end) - { - warn (_("Location list starting at offset 0x%lx is not terminated.\n"), - offset); - break; - } + case DW_MACRO_define_strp: + lineno = read_uleb128 (curr, &bytes_read, end); + curr += bytes_read; + SAFE_BYTE_GET_AND_INC (offset, curr, offset_size, end); + string = fetch_indirect_string (offset); + printf (_(" DW_MACRO_define_strp - lineno : %d macro : %s\n"), + lineno, string); + break; - print_dwarf_vma (begin + base_address, pointer_size); - print_dwarf_vma (end + base_address, pointer_size); + case DW_MACRO_undef_strp: + lineno = read_uleb128 (curr, &bytes_read, end); + curr += bytes_read; + SAFE_BYTE_GET_AND_INC (offset, curr, offset_size, end); + string = fetch_indirect_string (offset); + printf (_(" DW_MACRO_undef_strp - lineno : %d macro : %s\n"), + lineno, string); + break; - putchar ('('); - need_frame_base = decode_location_expression (start, - pointer_size, - offset_size, - dwarf_version, - length, - cu_offset, section); - putchar (')'); + case DW_MACRO_import: + SAFE_BYTE_GET_AND_INC (offset, curr, offset_size, end); + printf (_(" DW_MACRO_import - offset : 0x%lx\n"), + (unsigned long) offset); + break; - if (need_frame_base && !has_frame_base) - printf (_(" [without DW_AT_frame_base]")); + case DW_MACRO_define_sup: + lineno = read_uleb128 (curr, &bytes_read, end); + curr += bytes_read; + SAFE_BYTE_GET_AND_INC (offset, curr, offset_size, end); + printf (_(" DW_MACRO_define_sup - lineno : %d macro offset : 0x%lx\n"), + lineno, (unsigned long) offset); + break; - if (begin == end) - fputs (_(" (start == end)"), stdout); - else if (begin > end) - fputs (_(" (start > end)"), stdout); + case DW_MACRO_undef_sup: + lineno = read_uleb128 (curr, &bytes_read, end); + curr += bytes_read; + SAFE_BYTE_GET_AND_INC (offset, curr, offset_size, end); + printf (_(" DW_MACRO_undef_sup - lineno : %d macro offset : 0x%lx\n"), + lineno, (unsigned long) offset); + break; - putchar ('\n'); + case DW_MACRO_import_sup: + SAFE_BYTE_GET_AND_INC (offset, curr, offset_size, end); + printf (_(" DW_MACRO_import_sup - offset : 0x%lx\n"), + (unsigned long) offset); + break; - start += length; + default: + if (extended_ops == NULL || extended_ops[op] == NULL) + { + error (_(" Unknown macro opcode %02x seen\n"), op); + return 0; + } + else + { + /* Skip over unhandled opcodes. */ + dwarf_vma nargs, n; + unsigned char *desc = extended_ops[op]; + nargs = read_uleb128 (desc, &bytes_read, end); + desc += bytes_read; + if (nargs == 0) + { + printf (_(" DW_MACRO_%02x\n"), op); + break; + } + printf (_(" DW_MACRO_%02x -"), op); + for (n = 0; n < nargs; n++) + { + int val; + + /* DW_FORM_implicit_const is not expected here. */ + SAFE_BYTE_GET_AND_INC (val, desc, 1, end); + curr + = read_and_display_attr_value (0, val, 0, + curr, end, 0, 0, offset_size, + version, NULL, 0, NULL, + NULL, ' '); + if (n != nargs - 1) + printf (","); + } + printf ("\n"); + } + break; } } + + printf ("\n"); } - if (start < section_end) - warn (_("There are %ld unused bytes at the end of section %s\n"), - (long) (section_end - start), section->name); - putchar ('\n'); - free (array); return 1; } static int -display_debug_str (struct dwarf_section *section, - void *file ATTRIBUTE_UNUSED) +display_debug_abbrev (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED) { + abbrev_entry *entry; unsigned char *start = section->start; - unsigned long bytes = section->size; - dwarf_vma addr = section->address; - - if (bytes == 0) - { - printf (_("\nThe %s section is empty.\n"), section->name); - return 0; - } + unsigned char *end = start + section->size; - printf (_("Contents of the %s section:\n\n"), section->name); + introduce (section, FALSE); - while (bytes) + do { - int j; - int k; - int lbytes; + unsigned char *last; - lbytes = (bytes > 16 ? 16 : bytes); + free_abbrevs (); - printf (" 0x%8.8lx ", (unsigned long) addr); + last = start; + start = process_abbrev_section (start, end); - for (j = 0; j < 16; j++) - { - if (j < lbytes) - printf ("%2.2x", start[j]); - else - printf (" "); + if (first_abbrev == NULL) + continue; - if ((j & 3) == 3) - printf (" "); - } + printf (_(" Number TAG (0x%lx)\n"), (long) (last - section->start)); - for (j = 0; j < lbytes; j++) + for (entry = first_abbrev; entry; entry = entry->next) { - k = start[j]; - if (k >= ' ' && k < 0x80) - printf ("%c", k); - else - printf ("."); - } + abbrev_attr *attr; - putchar ('\n'); + printf (" %ld %s [%s]\n", + entry->entry, + get_TAG_name (entry->tag), + entry->children ? _("has children") : _("no children")); - start += lbytes; - addr += lbytes; - bytes -= lbytes; + for (attr = entry->first_attr; attr; attr = attr->next) + { + printf (" %-18s %s", + get_AT_name (attr->attribute), + get_FORM_name (attr->form)); + if (attr->form == DW_FORM_implicit_const) + printf (": %" BFD_VMA_FMT "d", attr->implicit_const); + putchar ('\n'); + } + } } + while (start); - putchar ('\n'); + printf ("\n"); return 1; } -static int -display_debug_info (struct dwarf_section *section, void *file) -{ - return process_debug_info (section, file, abbrev, 0, 0); -} +/* Return true when ADDR is the maximum address, when addresses are + POINTER_SIZE bytes long. */ -static int -display_debug_types (struct dwarf_section *section, void *file) +static bfd_boolean +is_max_address (dwarf_vma addr, unsigned int pointer_size) { - return process_debug_info (section, file, abbrev, 0, 1); + dwarf_vma mask = ~(~(dwarf_vma) 1 << (pointer_size * 8 - 1)); + return ((addr & mask) == mask); } -static int -display_trace_info (struct dwarf_section *section, void *file) -{ - return process_debug_info (section, file, trace_abbrev, 0, 0); -} +/* Display a view pair list starting at *VSTART_PTR and ending at + VLISTEND within SECTION. */ -static int -display_debug_aranges (struct dwarf_section *section, - void *file ATTRIBUTE_UNUSED) +static void +display_view_pair_list (struct dwarf_section *section, + unsigned char **vstart_ptr, + unsigned int debug_info_entry, + unsigned char *vlistend) { - unsigned char *start = section->start; - unsigned char *end = start + section->size; + unsigned char *vstart = *vstart_ptr; + unsigned char *section_end = section->start + section->size; + unsigned int pointer_size = debug_information [debug_info_entry].pointer_size; - printf (_("Contents of the %s section:\n\n"), section->name); + if (vlistend < section_end) + section_end = vlistend; - /* It does not matter if this load fails, - we test for that later on. */ - load_debug_info (file); + putchar ('\n'); - while (start < end) + while (vstart < section_end) { - unsigned char *hdrptr; - DWARF2_Internal_ARange arange; - unsigned char *addr_ranges; - dwarf_vma length; - dwarf_vma address; - unsigned char address_size; - int excess; - int offset_size; - int initial_length_size; - - hdrptr = start; + dwarf_vma off = vstart - section->start; + dwarf_vma vbegin, vend; - arange.ar_length = byte_get (hdrptr, 4); - hdrptr += 4; - - if (arange.ar_length == 0xffffffff) - { - arange.ar_length = byte_get (hdrptr, 8); - hdrptr += 8; - offset_size = 8; - initial_length_size = 12; - } - else + unsigned int bytes_read; + vbegin = read_uleb128 (vstart, &bytes_read, section_end); + vstart += bytes_read; + if (vstart == section_end) { - offset_size = 4; - initial_length_size = 4; + vstart -= bytes_read; + break; } - arange.ar_version = byte_get (hdrptr, 2); - hdrptr += 2; + vend = read_uleb128 (vstart, &bytes_read, section_end); + vstart += bytes_read; - arange.ar_info_offset = byte_get (hdrptr, offset_size); - hdrptr += offset_size; + printf (" %8.8lx ", (unsigned long) off); - if (num_debug_info_entries != DEBUG_INFO_UNAVAILABLE - && num_debug_info_entries > 0 - && find_debug_info_for_offset (arange.ar_info_offset) == NULL) - warn (_(".debug_info offset of 0x%lx in %s section does not point to a CU header.\n"), - (unsigned long) arange.ar_info_offset, section->name); + print_dwarf_view (vbegin, pointer_size, 1); + print_dwarf_view (vend, pointer_size, 1); + printf (_("location view pair\n")); + } - arange.ar_pointer_size = byte_get (hdrptr, 1); - hdrptr += 1; + putchar ('\n'); + *vstart_ptr = vstart; +} - arange.ar_segment_size = byte_get (hdrptr, 1); - hdrptr += 1; +/* Display a location list from a normal (ie, non-dwo) .debug_loc section. */ - if (arange.ar_version != 2 && arange.ar_version != 3) - { - warn (_("Only DWARF 2 and 3 aranges are currently supported.\n")); - break; - } +static void +display_loc_list (struct dwarf_section *section, + unsigned char **start_ptr, + unsigned int debug_info_entry, + dwarf_vma offset, + dwarf_vma base_address, + unsigned char **vstart_ptr, + int has_frame_base) +{ + unsigned char *start = *start_ptr, *vstart = *vstart_ptr; + unsigned char *section_end = section->start + section->size; + unsigned long cu_offset; + unsigned int pointer_size; + unsigned int offset_size; + int dwarf_version; + + dwarf_vma begin; + dwarf_vma end; + unsigned short length; + int need_frame_base; + + if (debug_info_entry >= num_debug_info_entries) + { + warn (_("No debug information available for loc lists of entry: %u\n"), + debug_info_entry); + return; + } - printf (_(" Length: %ld\n"), - (long) arange.ar_length); - printf (_(" Version: %d\n"), arange.ar_version); - printf (_(" Offset into .debug_info: 0x%lx\n"), - (unsigned long) arange.ar_info_offset); - printf (_(" Pointer Size: %d\n"), arange.ar_pointer_size); - printf (_(" Segment Size: %d\n"), arange.ar_segment_size); + cu_offset = debug_information [debug_info_entry].cu_offset; + pointer_size = debug_information [debug_info_entry].pointer_size; + offset_size = debug_information [debug_info_entry].offset_size; + dwarf_version = debug_information [debug_info_entry].dwarf_version; - address_size = arange.ar_pointer_size + arange.ar_segment_size; + if (pointer_size < 2 || pointer_size > 8) + { + warn (_("Invalid pointer size (%d) in debug info for entry %d\n"), + pointer_size, debug_info_entry); + return; + } - /* The DWARF spec does not require that the address size be a power - of two, but we do. This will have to change if we ever encounter - an uneven architecture. */ - if ((address_size & (address_size - 1)) != 0) + while (1) + { + dwarf_vma off = offset + (start - *start_ptr); + dwarf_vma vbegin = vm1, vend = vm1; + + if (start + 2 * pointer_size > section_end) { - warn (_("Pointer size + Segment size is not a power of two.\n")); + warn (_("Location list starting at offset 0x%lx is not terminated.\n"), + (unsigned long) offset); break; } - if (address_size > 4) - printf (_("\n Address Length\n")); - else - printf (_("\n Address Length\n")); + printf (" %8.8lx ", (unsigned long) off); - addr_ranges = hdrptr; + SAFE_BYTE_GET_AND_INC (begin, start, pointer_size, section_end); + SAFE_BYTE_GET_AND_INC (end, start, pointer_size, section_end); - /* Must pad to an alignment boundary that is twice the address size. */ - excess = (hdrptr - start) % (2 * address_size); - if (excess) - addr_ranges += (2 * address_size) - excess; + if (begin == 0 && end == 0) + { + /* PR 18374: In a object file we can have a location list that + starts with a begin and end of 0 because there are relocations + that need to be applied to the addresses. Actually applying + the relocations now does not help as they will probably resolve + to 0, since the object file has not been fully linked. Real + end of list markers will not have any relocations against them. */ + if (! reloc_at (section, off) + && ! reloc_at (section, off + pointer_size)) + { + printf (_("\n")); + break; + } + } - start += arange.ar_length + initial_length_size; + /* Check base address specifiers. */ + if (is_max_address (begin, pointer_size) + && !is_max_address (end, pointer_size)) + { + base_address = end; + print_dwarf_vma (begin, pointer_size); + print_dwarf_vma (end, pointer_size); + printf (_("(base address)\n")); + continue; + } - while (addr_ranges + 2 * address_size <= start) + if (vstart) { - address = byte_get (addr_ranges, address_size); + unsigned int bytes_read; - addr_ranges += address_size; + off = offset + (vstart - *start_ptr); - length = byte_get (addr_ranges, address_size); + vbegin = read_uleb128 (vstart, &bytes_read, section_end); + vstart += bytes_read; + print_dwarf_view (vbegin, pointer_size, 1); - addr_ranges += address_size; + vend = read_uleb128 (vstart, &bytes_read, section_end); + vstart += bytes_read; + print_dwarf_view (vend, pointer_size, 1); - printf (" "); - print_dwarf_vma (address, address_size); - print_dwarf_vma (length, address_size); - putchar ('\n'); + printf (_("views at %8.8lx for:\n %*s "), + (unsigned long) off, 8, ""); } - } - printf ("\n"); + if (start + 2 > section_end) + { + warn (_("Location list starting at offset 0x%lx is not terminated.\n"), + (unsigned long) offset); + break; + } - return 1; -} + SAFE_BYTE_GET_AND_INC (length, start, 2, section_end); -/* Each debug_information[x].range_lists[y] gets this representation for - sorting purposes. */ + if (start + length > section_end) + { + warn (_("Location list starting at offset 0x%lx is not terminated.\n"), + (unsigned long) offset); + break; + } -struct range_entry -{ - /* The debug_information[x].range_lists[y] value. */ - unsigned long ranges_offset; + print_dwarf_vma (begin + base_address, pointer_size); + print_dwarf_vma (end + base_address, pointer_size); - /* Original debug_information to find parameters of the data. */ - debug_info *debug_info_p; -}; + putchar ('('); + need_frame_base = decode_location_expression (start, + pointer_size, + offset_size, + dwarf_version, + length, + cu_offset, section); + putchar (')'); -/* Sort struct range_entry in ascending order of its RANGES_OFFSET. */ + if (need_frame_base && !has_frame_base) + printf (_(" [without DW_AT_frame_base]")); -static int -range_entry_compar (const void *ap, const void *bp) -{ - const struct range_entry *a_re = (const struct range_entry *) ap; - const struct range_entry *b_re = (const struct range_entry *) bp; - const unsigned long a = a_re->ranges_offset; - const unsigned long b = b_re->ranges_offset; + if (begin == end && vbegin == vend) + fputs (_(" (start == end)"), stdout); + else if (begin > end || (begin == end && vbegin > vend)) + fputs (_(" (start > end)"), stdout); - return (a > b) - (b > a); + putchar ('\n'); + + start += length; + } + + *start_ptr = start; + *vstart_ptr = vstart; } -static int -display_debug_ranges (struct dwarf_section *section, - void *file ATTRIBUTE_UNUSED) +/* Display a location list from a normal (ie, non-dwo) .debug_loclists section. */ + +static void +display_loclists_list (struct dwarf_section *section, + unsigned char **start_ptr, + unsigned int debug_info_entry, + dwarf_vma offset, + dwarf_vma base_address, + unsigned char **vstart_ptr, + int has_frame_base) { - unsigned char *start = section->start; - unsigned long bytes; - unsigned char *section_begin = start; - unsigned int num_range_list, i; - struct range_entry *range_entries, *range_entry_fill; + unsigned char *start = *start_ptr, *vstart = *vstart_ptr; + unsigned char *section_end = section->start + section->size; + unsigned long cu_offset; + unsigned int pointer_size; + unsigned int offset_size; + int dwarf_version; + unsigned int bytes_read; - bytes = section->size; + /* Initialize it due to a false compiler warning. */ + dwarf_vma begin = -1, vbegin = -1; + dwarf_vma end = -1, vend = -1; + dwarf_vma length; + int need_frame_base; - if (bytes == 0) + if (debug_info_entry >= num_debug_info_entries) { - printf (_("\nThe %s section is empty.\n"), section->name); - return 0; + warn (_("No debug information available for " + "loclists lists of entry: %u\n"), + debug_info_entry); + return; } - if (load_debug_info (file) == 0) + cu_offset = debug_information [debug_info_entry].cu_offset; + pointer_size = debug_information [debug_info_entry].pointer_size; + offset_size = debug_information [debug_info_entry].offset_size; + dwarf_version = debug_information [debug_info_entry].dwarf_version; + + if (pointer_size < 2 || pointer_size > 8) { - warn (_("Unable to load/parse the .debug_info section, so cannot interpret the %s section.\n"), - section->name); - return 0; + warn (_("Invalid pointer size (%d) in debug info for entry %d\n"), + pointer_size, debug_info_entry); + return; } - num_range_list = 0; - for (i = 0; i < num_debug_info_entries; i++) - num_range_list += debug_information [i].num_range_lists; - - if (num_range_list == 0) - error (_("No range lists in .debug_info section!\n")); - - range_entries = (struct range_entry *) - xmalloc (sizeof (*range_entries) * num_range_list); - range_entry_fill = range_entries; - - for (i = 0; i < num_debug_info_entries; i++) + while (1) { - debug_info *debug_info_p = &debug_information[i]; - unsigned int j; + dwarf_vma off = offset + (start - *start_ptr); + enum dwarf_location_list_entry_type llet; - for (j = 0; j < debug_info_p->num_range_lists; j++) + if (start + 1 > section_end) { - range_entry_fill->ranges_offset = debug_info_p->range_lists[j]; - range_entry_fill->debug_info_p = debug_info_p; - range_entry_fill++; + warn (_("Location list starting at offset 0x%lx is not terminated.\n"), + (unsigned long) offset); + break; } - } - qsort (range_entries, num_range_list, sizeof (*range_entries), - range_entry_compar); + printf (" %8.8lx ", (unsigned long) off); - /* DWARF sections under Mach-O have non-zero addresses. */ - if (range_entries[0].ranges_offset != section->address) - warn (_("Range lists in %s section start at 0x%lx\n"), - section->name, range_entries[0].ranges_offset); + SAFE_BYTE_GET_AND_INC (llet, start, 1, section_end); - printf (_("Contents of the %s section:\n\n"), section->name); - printf (_(" Offset Begin End\n")); + if (vstart && llet == DW_LLE_offset_pair) + { + off = offset + (vstart - *start_ptr); - for (i = 0; i < num_range_list; i++) - { - struct range_entry *range_entry = &range_entries[i]; - debug_info *debug_info_p = range_entry->debug_info_p; - unsigned int pointer_size; - unsigned long offset; - unsigned char *next; - unsigned long base_address; + vbegin = read_uleb128 (vstart, &bytes_read, section_end); + vstart += bytes_read; + print_dwarf_view (vbegin, pointer_size, 1); - pointer_size = debug_info_p->pointer_size; + vend = read_uleb128 (vstart, &bytes_read, section_end); + vstart += bytes_read; + print_dwarf_view (vend, pointer_size, 1); - /* DWARF sections under Mach-O have non-zero addresses. */ - offset = range_entry->ranges_offset - section->address; - next = section_begin + offset; - base_address = debug_info_p->base_address; + printf (_("views at %8.8lx for:\n %*s "), + (unsigned long) off, 8, ""); + } - if (i > 0) + switch (llet) { - if (start < next) - warn (_("There is a hole [0x%lx - 0x%lx] in %s section.\n"), - (unsigned long) (start - section_begin), - (unsigned long) (next - section_begin), section->name); - else if (start > next) - warn (_("There is an overlap [0x%lx - 0x%lx] in %s section.\n"), - (unsigned long) (start - section_begin), - (unsigned long) (next - section_begin), section->name); + case DW_LLE_end_of_list: + printf (_("\n")); + break; + case DW_LLE_offset_pair: + begin = read_uleb128 (start, &bytes_read, section_end); + start += bytes_read; + end = read_uleb128 (start, &bytes_read, section_end); + start += bytes_read; + break; + case DW_LLE_base_address: + SAFE_BYTE_GET_AND_INC (base_address, start, pointer_size, + section_end); + print_dwarf_vma (base_address, pointer_size); + printf (_("(base address)\n")); + break; +#ifdef DW_LLE_view_pair + case DW_LLE_view_pair: + if (vstart) + printf (_("View pair entry in loclist with locviews attribute\n")); + vbegin = read_uleb128 (start, &bytes_read, section_end); + start += bytes_read; + print_dwarf_view (vbegin, pointer_size, 1); + + vend = read_uleb128 (start, &bytes_read, section_end); + start += bytes_read; + print_dwarf_view (vend, pointer_size, 1); + + printf (_("views for:\n")); + continue; +#endif + default: + error (_("Invalid location list entry type %d\n"), llet); + return; } - start = next; + if (llet == DW_LLE_end_of_list) + break; + if (llet != DW_LLE_offset_pair) + continue; - while (1) + if (start + 2 > section_end) { - dwarf_vma begin; - dwarf_vma end; + warn (_("Location list starting at offset 0x%lx is not terminated.\n"), + (unsigned long) offset); + break; + } - /* Note: we use sign extension here in order to be sure that - we can detect the -1 escape value. Sign extension into the - top 32 bits of a 32-bit address will not affect the values - that we display since we always show hex values, and always - the bottom 32-bits. */ - begin = byte_get_signed (start, pointer_size); - start += pointer_size; - end = byte_get_signed (start, pointer_size); - start += pointer_size; + length = read_uleb128 (start, &bytes_read, section_end); + start += bytes_read; - printf (" %8.8lx ", offset); + print_dwarf_vma (begin + base_address, pointer_size); + print_dwarf_vma (end + base_address, pointer_size); - if (begin == 0 && end == 0) - { - printf (_("\n")); - break; - } + putchar ('('); + need_frame_base = decode_location_expression (start, + pointer_size, + offset_size, + dwarf_version, + length, + cu_offset, section); + putchar (')'); - /* Check base address specifiers. */ - if (begin == (dwarf_vma) -1 && end != (dwarf_vma) -1) - { - base_address = end; - print_dwarf_vma (begin, pointer_size); - print_dwarf_vma (end, pointer_size); - printf ("(base address)\n"); - continue; - } + if (need_frame_base && !has_frame_base) + printf (_(" [without DW_AT_frame_base]")); - print_dwarf_vma (begin + base_address, pointer_size); - print_dwarf_vma (end + base_address, pointer_size); + if (begin == end && vbegin == vend) + fputs (_(" (start == end)"), stdout); + else if (begin > end || (begin == end && vbegin > vend)) + fputs (_(" (start > end)"), stdout); - if (begin == end) - fputs (_("(start == end)"), stdout); - else if (begin > end) - fputs (_("(start > end)"), stdout); + putchar ('\n'); - putchar ('\n'); - } + start += length; + vbegin = vend = -1; } - putchar ('\n'); - free (range_entries); + if (vbegin != vm1 || vend != vm1) + printf (_("Trailing view pair not used in a range")); - return 1; + *start_ptr = start; + *vstart_ptr = vstart; } -typedef struct Frame_Chunk +/* Print a .debug_addr table index in decimal, surrounded by square brackets, + right-adjusted in a field of length LEN, and followed by a space. */ + +static void +print_addr_index (unsigned int idx, unsigned int len) { - struct Frame_Chunk *next; - unsigned char *chunk_start; - int ncols; - /* DW_CFA_{undefined,same_value,offset,register,unreferenced} */ - short int *col_type; - int *col_offset; - char *augmentation; - unsigned int code_factor; - int data_factor; - unsigned long pc_begin; - unsigned long pc_range; - int cfa_reg; - int cfa_offset; - int ra; - unsigned char fde_encoding; - unsigned char cfa_exp; - unsigned char ptr_size; - unsigned char segment_size; + static char buf[15]; + snprintf (buf, sizeof (buf), "[%d]", idx); + printf ("%*s ", len, buf); } -Frame_Chunk; - -static const char *const *dwarf_regnames; -static unsigned int dwarf_regnames_count; - -/* A marker for a col_type that means this column was never referenced - in the frame info. */ -#define DW_CFA_unreferenced (-1) -/* Return 0 if not more space is needed, 1 if more space is needed, - -1 for invalid reg. */ +/* Display a location list from a .dwo section. It uses address indexes rather + than embedded addresses. This code closely follows display_loc_list, but the + two are sufficiently different that combining things is very ugly. */ -static int -frame_need_space (Frame_Chunk *fc, unsigned int reg) +static void +display_loc_list_dwo (struct dwarf_section *section, + unsigned char **start_ptr, + unsigned int debug_info_entry, + dwarf_vma offset, + unsigned char **vstart_ptr, + int has_frame_base) { - int prev = fc->ncols; - - if (reg < (unsigned int) fc->ncols) - return 0; + unsigned char *start = *start_ptr, *vstart = *vstart_ptr; + unsigned char *section_end = section->start + section->size; + unsigned long cu_offset; + unsigned int pointer_size; + unsigned int offset_size; + int dwarf_version; + int entry_type; + unsigned short length; + int need_frame_base; + unsigned int idx; + unsigned int bytes_read; - if (dwarf_regnames_count - && reg > dwarf_regnames_count) - return -1; + if (debug_info_entry >= num_debug_info_entries) + { + warn (_("No debug information for loc lists of entry: %u\n"), + debug_info_entry); + return; + } - fc->ncols = reg + 1; - fc->col_type = (short int *) xcrealloc (fc->col_type, fc->ncols, - sizeof (short int)); - fc->col_offset = (int *) xcrealloc (fc->col_offset, fc->ncols, sizeof (int)); + cu_offset = debug_information [debug_info_entry].cu_offset; + pointer_size = debug_information [debug_info_entry].pointer_size; + offset_size = debug_information [debug_info_entry].offset_size; + dwarf_version = debug_information [debug_info_entry].dwarf_version; - while (prev < fc->ncols) + if (pointer_size < 2 || pointer_size > 8) { - fc->col_type[prev] = DW_CFA_unreferenced; - fc->col_offset[prev] = 0; - prev++; + warn (_("Invalid pointer size (%d) in debug info for entry %d\n"), + pointer_size, debug_info_entry); + return; } - return 1; -} -static const char *const dwarf_regnames_i386[] = -{ - "eax", "ecx", "edx", "ebx", - "esp", "ebp", "esi", "edi", - "eip", "eflags", NULL, - "st0", "st1", "st2", "st3", - "st4", "st5", "st6", "st7", - NULL, NULL, - "xmm0", "xmm1", "xmm2", "xmm3", - "xmm4", "xmm5", "xmm6", "xmm7", - "mm0", "mm1", "mm2", "mm3", - "mm4", "mm5", "mm6", "mm7", - "fcw", "fsw", "mxcsr", - "es", "cs", "ss", "ds", "fs", "gs", NULL, NULL, - "tr", "ldtr" -}; + while (1) + { + printf (" %8.8lx ", (unsigned long) (offset + (start - *start_ptr))); -void -init_dwarf_regnames_i386 (void) -{ - dwarf_regnames = dwarf_regnames_i386; - dwarf_regnames_count = ARRAY_SIZE (dwarf_regnames_i386); -} + if (start >= section_end) + { + warn (_("Location list starting at offset 0x%lx is not terminated.\n"), + (unsigned long) offset); + break; + } -static const char *const dwarf_regnames_x86_64[] = -{ - "rax", "rdx", "rcx", "rbx", - "rsi", "rdi", "rbp", "rsp", - "r8", "r9", "r10", "r11", - "r12", "r13", "r14", "r15", - "rip", - "xmm0", "xmm1", "xmm2", "xmm3", - "xmm4", "xmm5", "xmm6", "xmm7", - "xmm8", "xmm9", "xmm10", "xmm11", - "xmm12", "xmm13", "xmm14", "xmm15", - "st0", "st1", "st2", "st3", - "st4", "st5", "st6", "st7", - "mm0", "mm1", "mm2", "mm3", - "mm4", "mm5", "mm6", "mm7", - "rflags", - "es", "cs", "ss", "ds", "fs", "gs", NULL, NULL, - "fs.base", "gs.base", NULL, NULL, - "tr", "ldtr", - "mxcsr", "fcw", "fsw" -}; - -void -init_dwarf_regnames_x86_64 (void) -{ - dwarf_regnames = dwarf_regnames_x86_64; - dwarf_regnames_count = ARRAY_SIZE (dwarf_regnames_x86_64); -} + SAFE_BYTE_GET_AND_INC (entry_type, start, 1, section_end); -void -init_dwarf_regnames (unsigned int e_machine) -{ - switch (e_machine) - { - case EM_386: - case EM_486: - init_dwarf_regnames_i386 (); - break; + if (vstart) + switch (entry_type) + { + default: + break; - case EM_X86_64: - case EM_L1OM: - init_dwarf_regnames_x86_64 (); - break; + case 2: + case 3: + case 4: + { + dwarf_vma view; + dwarf_vma off = offset + (vstart - *start_ptr); - default: - break; - } -} + view = read_uleb128 (vstart, &bytes_read, section_end); + vstart += bytes_read; + print_dwarf_view (view, 8, 1); -static const char * -regname (unsigned int regno, int row) -{ - static char reg[64]; - if (dwarf_regnames - && regno < dwarf_regnames_count - && dwarf_regnames [regno] != NULL) - { - if (row) - return dwarf_regnames [regno]; - snprintf (reg, sizeof (reg), "r%d (%s)", regno, - dwarf_regnames [regno]); - } - else - snprintf (reg, sizeof (reg), "r%d", regno); - return reg; -} + view = read_uleb128 (vstart, &bytes_read, section_end); + vstart += bytes_read; + print_dwarf_view (view, 8, 1); -static void -frame_display_row (Frame_Chunk *fc, int *need_col_headers, int *max_regs) -{ - int r; - char tmp[100]; + printf (_("views at %8.8lx for:\n %*s "), + (unsigned long) off, 8, ""); - if (*max_regs < fc->ncols) - *max_regs = fc->ncols; + } + break; + } - if (*need_col_headers) - { - static const char *sloc = " LOC"; + switch (entry_type) + { + case 0: /* A terminating entry. */ + *start_ptr = start; + *vstart_ptr = vstart; + printf (_("\n")); + return; + case 1: /* A base-address entry. */ + idx = read_uleb128 (start, &bytes_read, section_end); + start += bytes_read; + print_addr_index (idx, 8); + printf ("%*s", 9 + (vstart ? 2 * 6 : 0), ""); + printf (_("(base address selection entry)\n")); + continue; + case 2: /* A start/end entry. */ + idx = read_uleb128 (start, &bytes_read, section_end); + start += bytes_read; + print_addr_index (idx, 8); + idx = read_uleb128 (start, &bytes_read, section_end); + start += bytes_read; + print_addr_index (idx, 8); + break; + case 3: /* A start/length entry. */ + idx = read_uleb128 (start, &bytes_read, section_end); + start += bytes_read; + print_addr_index (idx, 8); + SAFE_BYTE_GET_AND_INC (idx, start, 4, section_end); + printf ("%08x ", idx); + break; + case 4: /* An offset pair entry. */ + SAFE_BYTE_GET_AND_INC (idx, start, 4, section_end); + printf ("%08x ", idx); + SAFE_BYTE_GET_AND_INC (idx, start, 4, section_end); + printf ("%08x ", idx); + break; + default: + warn (_("Unknown location list entry type 0x%x.\n"), entry_type); + *start_ptr = start; + *vstart_ptr = vstart; + return; + } - *need_col_headers = 0; + if (start + 2 > section_end) + { + warn (_("Location list starting at offset 0x%lx is not terminated.\n"), + (unsigned long) offset); + break; + } - printf ("%-*s CFA ", eh_addr_size * 2, sloc); + SAFE_BYTE_GET_AND_INC (length, start, 2, section_end); + if (start + length > section_end) + { + warn (_("Location list starting at offset 0x%lx is not terminated.\n"), + (unsigned long) offset); + break; + } - for (r = 0; r < *max_regs; r++) - if (fc->col_type[r] != DW_CFA_unreferenced) - { - if (r == fc->ra) - printf ("ra "); - else - printf ("%-5s ", regname (r, 1)); - } + putchar ('('); + need_frame_base = decode_location_expression (start, + pointer_size, + offset_size, + dwarf_version, + length, + cu_offset, section); + putchar (')'); - printf ("\n"); - } + if (need_frame_base && !has_frame_base) + printf (_(" [without DW_AT_frame_base]")); - printf ("%0*lx ", eh_addr_size * 2, fc->pc_begin); - if (fc->cfa_exp) - strcpy (tmp, "exp"); - else - sprintf (tmp, "%s%+d", regname (fc->cfa_reg, 1), fc->cfa_offset); - printf ("%-8s ", tmp); + putchar ('\n'); - for (r = 0; r < fc->ncols; r++) - { - if (fc->col_type[r] != DW_CFA_unreferenced) - { - switch (fc->col_type[r]) - { - case DW_CFA_undefined: - strcpy (tmp, "u"); - break; - case DW_CFA_same_value: - strcpy (tmp, "s"); - break; - case DW_CFA_offset: - sprintf (tmp, "c%+d", fc->col_offset[r]); - break; - case DW_CFA_val_offset: - sprintf (tmp, "v%+d", fc->col_offset[r]); - break; - case DW_CFA_register: - sprintf (tmp, "%s", regname (fc->col_offset[r], 0)); - break; - case DW_CFA_expression: - strcpy (tmp, "exp"); - break; - case DW_CFA_val_expression: - strcpy (tmp, "vexp"); - break; - default: - strcpy (tmp, "n/a"); - break; - } - printf ("%-5s ", tmp); - } + start += length; } - printf ("\n"); + + *start_ptr = start; + *vstart_ptr = vstart; } -#define GET(N) byte_get (start, N); start += N -#define LEB() read_leb128 (start, & length_return, 0); start += length_return -#define SLEB() read_sleb128 (start, & length_return); start += length_return +/* Sort array of indexes in ascending order of loc_offsets[idx] and + loc_views. */ + +static dwarf_vma *loc_offsets, *loc_views; static int -display_debug_frames (struct dwarf_section *section, - void *file ATTRIBUTE_UNUSED) +loc_offsets_compar (const void *ap, const void *bp) { - unsigned char *start = section->start; - unsigned char *end = start + section->size; - unsigned char *section_start = start; - Frame_Chunk *chunks = 0; - Frame_Chunk *remembered_state = 0; - Frame_Chunk *rs; - int is_eh = strcmp (section->name, ".eh_frame") == 0; - unsigned int length_return; - int max_regs = 0; - const char *bad_reg = _("bad register: "); - int saved_eh_addr_size = eh_addr_size; + dwarf_vma a = loc_offsets[*(const unsigned int *) ap]; + dwarf_vma b = loc_offsets[*(const unsigned int *) bp]; - printf (_("Contents of the %s section:\n"), section->name); + int ret = (a > b) - (b > a); + if (ret) + return ret; - while (start < end) - { - unsigned char *saved_start; - unsigned char *block_end; - unsigned long length; - unsigned long cie_id; - Frame_Chunk *fc; - Frame_Chunk *cie; - int need_col_headers = 1; - unsigned char *augmentation_data = NULL; - unsigned long augmentation_data_len = 0; - int encoded_ptr_size = saved_eh_addr_size; - int offset_size; - int initial_length_size; + a = loc_views[*(const unsigned int *) ap]; + b = loc_views[*(const unsigned int *) bp]; - saved_start = start; - length = byte_get (start, 4); start += 4; + ret = (a > b) - (b > a); - if (length == 0) - { - printf ("\n%08lx ZERO terminator\n\n", - (unsigned long)(saved_start - section_start)); - continue; - } + return ret; +} - if (length == 0xffffffff) - { - length = byte_get (start, 8); - start += 8; - offset_size = 8; - initial_length_size = 12; - } - else +static int +display_debug_loc (struct dwarf_section *section, void *file) +{ + unsigned char *start = section->start, *vstart = NULL; + unsigned long bytes; + unsigned char *section_begin = start; + unsigned int num_loc_list = 0; + unsigned long last_offset = 0; + unsigned long last_view = 0; + unsigned int first = 0; + unsigned int i; + unsigned int j; + int seen_first_offset = 0; + int locs_sorted = 1; + unsigned char *next = start, *vnext = vstart; + unsigned int *array = NULL; + const char *suffix = strrchr (section->name, '.'); + int is_dwo = 0; + int is_loclists = strstr (section->name, "debug_loclists") != NULL; + dwarf_vma expected_start = 0; + + if (suffix && strcmp (suffix, ".dwo") == 0) + is_dwo = 1; + + bytes = section->size; + + if (bytes == 0) + { + printf (_("\nThe %s section is empty.\n"), section->name); + return 0; + } + + if (is_loclists) + { + unsigned char *hdrptr = section_begin; + dwarf_vma ll_length; + unsigned short ll_version; + unsigned char *end = section_begin + section->size; + unsigned char address_size, segment_selector_size; + uint32_t offset_entry_count; + + SAFE_BYTE_GET_AND_INC (ll_length, hdrptr, 4, end); + if (ll_length == 0xffffffff) + SAFE_BYTE_GET_AND_INC (ll_length, hdrptr, 8, end); + + SAFE_BYTE_GET_AND_INC (ll_version, hdrptr, 2, end); + if (ll_version != 5) { - offset_size = 4; - initial_length_size = 4; + warn (_("The %s section contains corrupt or " + "unsupported version number: %d.\n"), + section->name, ll_version); + return 0; } - block_end = saved_start + length + initial_length_size; - if (block_end > end) + SAFE_BYTE_GET_AND_INC (address_size, hdrptr, 1, end); + + SAFE_BYTE_GET_AND_INC (segment_selector_size, hdrptr, 1, end); + if (segment_selector_size != 0) { - warn ("Invalid length %#08lx in FDE at %#08lx\n", - length, (unsigned long)(saved_start - section_start)); - block_end = end; + warn (_("The %s section contains " + "unsupported segment selector size: %d.\n"), + section->name, segment_selector_size); + return 0; } - cie_id = byte_get (start, offset_size); start += offset_size; - if (is_eh ? (cie_id == 0) : (cie_id == DW_CIE_ID)) + SAFE_BYTE_GET_AND_INC (offset_entry_count, hdrptr, 4, end); + if (offset_entry_count != 0) { - int version; - - fc = (Frame_Chunk *) xmalloc (sizeof (Frame_Chunk)); - memset (fc, 0, sizeof (Frame_Chunk)); + warn (_("The %s section contains " + "unsupported offset entry count: %d.\n"), + section->name, offset_entry_count); + return 0; + } - fc->next = chunks; - chunks = fc; - fc->chunk_start = saved_start; - fc->ncols = 0; - fc->col_type = (short int *) xmalloc (sizeof (short int)); - fc->col_offset = (int *) xmalloc (sizeof (int)); - frame_need_space (fc, max_regs - 1); + expected_start = hdrptr - section_begin; + } - version = *start++; + if (load_debug_info (file) == 0) + { + warn (_("Unable to load/parse the .debug_info section, so cannot interpret the %s section.\n"), + section->name); + return 0; + } - fc->augmentation = (char *) start; - start = (unsigned char *) strchr ((char *) start, '\0') + 1; + /* Check the order of location list in .debug_info section. If + offsets of location lists are in the ascending order, we can + use `debug_information' directly. */ + for (i = 0; i < num_debug_info_entries; i++) + { + unsigned int num; - if (strcmp (fc->augmentation, "eh") == 0) - start += eh_addr_size; + num = debug_information [i].num_loc_offsets; + if (num > num_loc_list) + num_loc_list = num; - if (version >= 4) - { - fc->ptr_size = GET (1); - fc->segment_size = GET (1); - eh_addr_size = fc->ptr_size; - } - else - { - fc->ptr_size = eh_addr_size; - fc->segment_size = 0; - } - fc->code_factor = LEB (); - fc->data_factor = SLEB (); - if (version == 1) + /* Check if we can use `debug_information' directly. */ + if (locs_sorted && num != 0) + { + if (!seen_first_offset) { - fc->ra = GET (1); + /* This is the first location list. */ + last_offset = debug_information [i].loc_offsets [0]; + last_view = debug_information [i].loc_views [0]; + first = i; + seen_first_offset = 1; + j = 1; } else - { - fc->ra = LEB (); - } + j = 0; - if (fc->augmentation[0] == 'z') + for (; j < num; j++) { - augmentation_data_len = LEB (); - augmentation_data = start; - start += augmentation_data_len; - } - cie = fc; - - if (do_debug_frames_interp) - printf ("\n%08lx %08lx %08lx CIE \"%s\" cf=%d df=%d ra=%d\n", - (unsigned long)(saved_start - section_start), length, cie_id, - fc->augmentation, fc->code_factor, fc->data_factor, - fc->ra); - else - { - printf ("\n%08lx %08lx %08lx CIE\n", - (unsigned long)(saved_start - section_start), length, cie_id); - printf (" Version: %d\n", version); - printf (" Augmentation: \"%s\"\n", fc->augmentation); - if (version >= 4) - { - printf (" Pointer Size: %u\n", fc->ptr_size); - printf (" Segment Size: %u\n", fc->segment_size); - } - printf (" Code alignment factor: %u\n", fc->code_factor); - printf (" Data alignment factor: %d\n", fc->data_factor); - printf (" Return address column: %d\n", fc->ra); - - if (augmentation_data_len) + if (last_offset > + debug_information [i].loc_offsets [j] + || (last_offset == debug_information [i].loc_offsets [j] + && last_view > debug_information [i].loc_views [j])) { - unsigned long i; - printf (" Augmentation data: "); - for (i = 0; i < augmentation_data_len; ++i) - printf (" %02x", augmentation_data[i]); - putchar ('\n'); + locs_sorted = 0; + break; } - putchar ('\n'); + last_offset = debug_information [i].loc_offsets [j]; + last_view = debug_information [i].loc_views [j]; } + } + } - if (augmentation_data_len) - { - unsigned char *p, *q; - p = (unsigned char *) fc->augmentation + 1; - q = augmentation_data; + if (!seen_first_offset) + error (_("No location lists in .debug_info section!\n")); - while (1) - { - if (*p == 'L') - q++; - else if (*p == 'P') - q += 1 + size_of_encoded_value (*q); - else if (*p == 'R') - fc->fde_encoding = *q++; - else if (*p == 'S') - ; - else - break; - p++; - } + if (debug_information [first].num_loc_offsets > 0 + && debug_information [first].loc_offsets [0] != expected_start + && debug_information [first].loc_views [0] != expected_start) + warn (_("Location lists in %s section start at 0x%s\n"), + section->name, + dwarf_vmatoa ("x", debug_information [first].loc_offsets [0])); - if (fc->fde_encoding) - encoded_ptr_size = size_of_encoded_value (fc->fde_encoding); - } + if (!locs_sorted) + array = (unsigned int *) xcmalloc (num_loc_list, sizeof (unsigned int)); - frame_need_space (fc, fc->ra); - } - else - { - unsigned char *look_for; - static Frame_Chunk fde_fc; - unsigned long segment_selector; + introduce (section, FALSE); - fc = & fde_fc; - memset (fc, 0, sizeof (Frame_Chunk)); + if (reloc_at (section, 0)) + printf (_(" Warning: This section has relocations - addresses seen here may not be accurate.\n\n")); - look_for = is_eh ? start - 4 - cie_id : section_start + cie_id; + printf (_(" Offset Begin End Expression\n")); - for (cie = chunks; cie ; cie = cie->next) - if (cie->chunk_start == look_for) - break; + seen_first_offset = 0; + for (i = first; i < num_debug_info_entries; i++) + { + dwarf_vma offset, voffset; + dwarf_vma base_address; + unsigned int k; + int has_frame_base; - if (!cie) + if (!locs_sorted) + { + for (k = 0; k < debug_information [i].num_loc_offsets; k++) + array[k] = k; + loc_offsets = debug_information [i].loc_offsets; + loc_views = debug_information [i].loc_views; + qsort (array, debug_information [i].num_loc_offsets, + sizeof (*array), loc_offsets_compar); + } + + int adjacent_view_loclists = 1; + for (k = 0; k < debug_information [i].num_loc_offsets; k++) + { + j = locs_sorted ? k : array[k]; + if (k + && (debug_information [i].loc_offsets [locs_sorted + ? k - 1 : array [k - 1]] + == debug_information [i].loc_offsets [j]) + && (debug_information [i].loc_views [locs_sorted + ? k - 1 : array [k - 1]] + == debug_information [i].loc_views [j])) + continue; + has_frame_base = debug_information [i].have_frame_base [j]; + offset = debug_information [i].loc_offsets [j]; + next = section_begin + offset; + voffset = debug_information [i].loc_views [j]; + if (voffset != vm1) + vnext = section_begin + voffset; + else + vnext = NULL; + base_address = debug_information [i].base_address; + + if (vnext && vnext < next) { - warn ("Invalid CIE pointer %#08lx in FDE at %#08lx\n", - cie_id, (unsigned long)(saved_start - section_start)); - fc->ncols = 0; - fc->col_type = (short int *) xmalloc (sizeof (short int)); - fc->col_offset = (int *) xmalloc (sizeof (int)); - frame_need_space (fc, max_regs - 1); - cie = fc; - fc->augmentation = ""; - fc->fde_encoding = 0; - fc->ptr_size = eh_addr_size; - fc->segment_size = 0; + vstart = vnext; + display_view_pair_list (section, &vstart, i, next); + if (start == vnext) + start = vstart; } + + if (!seen_first_offset || !adjacent_view_loclists) + seen_first_offset = 1; else { - fc->ncols = cie->ncols; - fc->col_type = (short int *) xcmalloc (fc->ncols, sizeof (short int)); - fc->col_offset = (int *) xcmalloc (fc->ncols, sizeof (int)); - memcpy (fc->col_type, cie->col_type, fc->ncols * sizeof (short int)); - memcpy (fc->col_offset, cie->col_offset, fc->ncols * sizeof (int)); - fc->augmentation = cie->augmentation; - fc->ptr_size = cie->ptr_size; - eh_addr_size = cie->ptr_size; - fc->segment_size = cie->segment_size; - fc->code_factor = cie->code_factor; - fc->data_factor = cie->data_factor; - fc->cfa_reg = cie->cfa_reg; - fc->cfa_offset = cie->cfa_offset; - fc->ra = cie->ra; - frame_need_space (fc, max_regs - 1); - fc->fde_encoding = cie->fde_encoding; + if (start < next) + warn (_("There is a hole [0x%lx - 0x%lx] in .debug_loc section.\n"), + (unsigned long) (start - section_begin), + (unsigned long) offset); + else if (start > next) + warn (_("There is an overlap [0x%lx - 0x%lx] in .debug_loc section.\n"), + (unsigned long) (start - section_begin), + (unsigned long) offset); } + start = next; + vstart = vnext; - if (fc->fde_encoding) - encoded_ptr_size = size_of_encoded_value (fc->fde_encoding); - - segment_selector = 0; - if (fc->segment_size) + if (offset >= bytes) { - segment_selector = byte_get (start, fc->segment_size); - start += fc->segment_size; + warn (_("Offset 0x%lx is bigger than .debug_loc section size.\n"), + (unsigned long) offset); + continue; } - fc->pc_begin = get_encoded_value (start, fc->fde_encoding, section); - start += encoded_ptr_size; - fc->pc_range = byte_get (start, encoded_ptr_size); - start += encoded_ptr_size; - if (cie->augmentation[0] == 'z') + if (vnext && voffset >= bytes) { - augmentation_data_len = LEB (); - augmentation_data = start; - start += augmentation_data_len; + warn (_("View Offset 0x%lx is bigger than .debug_loc section size.\n"), + (unsigned long) voffset); + continue; } - printf ("\n%08lx %08lx %08lx FDE cie=%08lx pc=", - (unsigned long)(saved_start - section_start), length, cie_id, - (unsigned long)(cie->chunk_start - section_start)); - if (fc->segment_size) - printf ("%04lx:", segment_selector); - printf ("%08lx..%08lx\n", fc->pc_begin, fc->pc_begin + fc->pc_range); - if (! do_debug_frames_interp && augmentation_data_len) + if (!is_loclists) + { + if (is_dwo) + display_loc_list_dwo (section, &start, i, offset, + &vstart, has_frame_base); + else + display_loc_list (section, &start, i, offset, base_address, + &vstart, has_frame_base); + } + else { - unsigned long i; + if (is_dwo) + warn (_("DWO is not yet supported.\n")); + else + display_loclists_list (section, &start, i, offset, base_address, + &vstart, has_frame_base); + } - printf (" Augmentation data: "); - for (i = 0; i < augmentation_data_len; ++i) - printf (" %02x", augmentation_data[i]); - putchar ('\n'); - putchar ('\n'); + /* FIXME: this arrangement is quite simplistic. Nothing + requires locview lists to be adjacent to corresponding + loclists, and a single loclist could be augmented by + different locview lists, and vice-versa, unlikely as it + is that it would make sense to do so. Hopefully we'll + have view pair support built into loclists before we ever + need to address all these possibilities. */ + if (adjacent_view_loclists && vnext + && vnext != start && vstart != next) + { + adjacent_view_loclists = 0; + warn (_("Hole and overlap detection requires adjacent view lists and loclists.\n")); } + + if (vnext && vnext == start) + display_view_pair_list (section, &start, i, vstart); } + } - /* At this point, fc is the current chunk, cie (if any) is set, and - we're about to interpret instructions for the chunk. */ - /* ??? At present we need to do this always, since this sizes the - fc->col_type and fc->col_offset arrays, which we write into always. - We should probably split the interpreted and non-interpreted bits - into two different routines, since there's so much that doesn't - really overlap between them. */ - if (1 || do_debug_frames_interp) - { - /* Start by making a pass over the chunk, allocating storage - and taking note of what registers are used. */ - unsigned char *tmp = start; + if (start < section->start + section->size) + warn (ngettext ("There is %ld unused byte at the end of section %s\n", + "There are %ld unused bytes at the end of section %s\n", + (long) (section->start + section->size - start)), + (long) (section->start + section->size - start), section->name); + putchar ('\n'); + free (array); + return 1; +} - while (start < block_end) - { - unsigned op, opa; - unsigned long reg, temp; +static int +display_debug_str (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED) +{ + unsigned char *start = section->start; + unsigned long bytes = section->size; + dwarf_vma addr = section->address; - op = *start++; - opa = op & 0x3f; - if (op & 0xc0) - op &= 0xc0; + if (bytes == 0) + { + printf (_("\nThe %s section is empty.\n"), section->name); + return 0; + } - /* Warning: if you add any more cases to this switch, be - sure to add them to the corresponding switch below. */ - switch (op) - { - case DW_CFA_advance_loc: - break; - case DW_CFA_offset: - LEB (); - if (frame_need_space (fc, opa) >= 0) - fc->col_type[opa] = DW_CFA_undefined; - break; - case DW_CFA_restore: - if (frame_need_space (fc, opa) >= 0) - fc->col_type[opa] = DW_CFA_undefined; - break; - case DW_CFA_set_loc: - start += encoded_ptr_size; - break; - case DW_CFA_advance_loc1: - start += 1; - break; - case DW_CFA_advance_loc2: - start += 2; - break; - case DW_CFA_advance_loc4: - start += 4; - break; - case DW_CFA_offset_extended: - case DW_CFA_val_offset: - reg = LEB (); LEB (); - if (frame_need_space (fc, reg) >= 0) - fc->col_type[reg] = DW_CFA_undefined; - break; - case DW_CFA_restore_extended: - reg = LEB (); - frame_need_space (fc, reg); - if (frame_need_space (fc, reg) >= 0) - fc->col_type[reg] = DW_CFA_undefined; - break; - case DW_CFA_undefined: - reg = LEB (); - if (frame_need_space (fc, reg) >= 0) - fc->col_type[reg] = DW_CFA_undefined; - break; - case DW_CFA_same_value: - reg = LEB (); - if (frame_need_space (fc, reg) >= 0) - fc->col_type[reg] = DW_CFA_undefined; - break; - case DW_CFA_register: - reg = LEB (); LEB (); - if (frame_need_space (fc, reg) >= 0) - fc->col_type[reg] = DW_CFA_undefined; - break; - case DW_CFA_def_cfa: - LEB (); LEB (); - break; - case DW_CFA_def_cfa_register: - LEB (); - break; - case DW_CFA_def_cfa_offset: - LEB (); - break; - case DW_CFA_def_cfa_expression: - temp = LEB (); - start += temp; - break; - case DW_CFA_expression: - case DW_CFA_val_expression: - reg = LEB (); - temp = LEB (); - start += temp; - if (frame_need_space (fc, reg) >= 0) - fc->col_type[reg] = DW_CFA_undefined; - break; - case DW_CFA_offset_extended_sf: - case DW_CFA_val_offset_sf: - reg = LEB (); SLEB (); - if (frame_need_space (fc, reg) >= 0) - fc->col_type[reg] = DW_CFA_undefined; - break; - case DW_CFA_def_cfa_sf: - LEB (); SLEB (); - break; - case DW_CFA_def_cfa_offset_sf: - SLEB (); - break; - case DW_CFA_MIPS_advance_loc8: - start += 8; - break; - case DW_CFA_GNU_args_size: - LEB (); - break; - case DW_CFA_GNU_negative_offset_extended: - reg = LEB (); LEB (); - if (frame_need_space (fc, reg) >= 0) - fc->col_type[reg] = DW_CFA_undefined; - break; - default: - break; - } - } - start = tmp; - } + introduce (section, FALSE); - /* Now we know what registers are used, make a second pass over - the chunk, this time actually printing out the info. */ + while (bytes) + { + int j; + int k; + int lbytes; - while (start < block_end) - { - unsigned op, opa; - unsigned long ul, reg, roffs; - long l, ofs; + lbytes = (bytes > 16 ? 16 : bytes); + + printf (" 0x%8.8lx ", (unsigned long) addr); + + for (j = 0; j < 16; j++) + { + if (j < lbytes) + printf ("%2.2x", start[j]); + else + printf (" "); + + if ((j & 3) == 3) + printf (" "); + } + + for (j = 0; j < lbytes; j++) + { + k = start[j]; + if (k >= ' ' && k < 0x80) + printf ("%c", k); + else + printf ("."); + } + + putchar ('\n'); + + start += lbytes; + addr += lbytes; + bytes -= lbytes; + } + + putchar ('\n'); + + return 1; +} + +static int +display_debug_info (struct dwarf_section *section, void *file) +{ + return process_debug_info (section, file, section->abbrev_sec, FALSE, FALSE); +} + +static int +display_debug_types (struct dwarf_section *section, void *file) +{ + return process_debug_info (section, file, section->abbrev_sec, FALSE, TRUE); +} + +static int +display_trace_info (struct dwarf_section *section, void *file) +{ + return process_debug_info (section, file, section->abbrev_sec, FALSE, TRUE); +} + +static int +display_debug_aranges (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED) +{ + unsigned char *start = section->start; + unsigned char *end = start + section->size; + + introduce (section, FALSE); + + /* It does not matter if this load fails, + we test for that later on. */ + load_debug_info (file); + + while (start < end) + { + unsigned char *hdrptr; + DWARF2_Internal_ARange arange; + unsigned char *addr_ranges; + dwarf_vma length; + dwarf_vma address; + unsigned long sec_off; + unsigned char address_size; + int excess; + unsigned int offset_size; + unsigned int initial_length_size; + + hdrptr = start; + + SAFE_BYTE_GET_AND_INC (arange.ar_length, hdrptr, 4, end); + if (arange.ar_length == 0xffffffff) + { + SAFE_BYTE_GET_AND_INC (arange.ar_length, hdrptr, 8, end); + offset_size = 8; + initial_length_size = 12; + } + else + { + offset_size = 4; + initial_length_size = 4; + } + + sec_off = hdrptr - section->start; + if (sec_off + arange.ar_length < sec_off + || sec_off + arange.ar_length > section->size) + { + warn (_("Debug info is corrupted, %s header at %#lx has length %s\n"), + section->name, + sec_off - initial_length_size, + dwarf_vmatoa ("x", arange.ar_length)); + break; + } + + SAFE_BYTE_GET_AND_INC (arange.ar_version, hdrptr, 2, end); + SAFE_BYTE_GET_AND_INC (arange.ar_info_offset, hdrptr, offset_size, end); + + if (num_debug_info_entries != DEBUG_INFO_UNAVAILABLE + && num_debug_info_entries > 0 + && find_debug_info_for_offset (arange.ar_info_offset) == NULL) + warn (_(".debug_info offset of 0x%lx in %s section does not point to a CU header.\n"), + (unsigned long) arange.ar_info_offset, section->name); + + SAFE_BYTE_GET_AND_INC (arange.ar_pointer_size, hdrptr, 1, end); + SAFE_BYTE_GET_AND_INC (arange.ar_segment_size, hdrptr, 1, end); + + if (arange.ar_version != 2 && arange.ar_version != 3) + { + /* PR 19872: A version number of 0 probably means that there is + padding at the end of the .debug_aranges section. Gold puts + it there when performing an incremental link, for example. + So do not generate a warning in this case. */ + if (arange.ar_version) + warn (_("Only DWARF 2 and 3 aranges are currently supported.\n")); + break; + } + + printf (_(" Length: %ld\n"), + (long) arange.ar_length); + printf (_(" Version: %d\n"), arange.ar_version); + printf (_(" Offset into .debug_info: 0x%lx\n"), + (unsigned long) arange.ar_info_offset); + printf (_(" Pointer Size: %d\n"), arange.ar_pointer_size); + printf (_(" Segment Size: %d\n"), arange.ar_segment_size); + + address_size = arange.ar_pointer_size + arange.ar_segment_size; + + /* PR 17512: file: 001-108546-0.001:0.1. */ + if (address_size == 0 || address_size > 8) + { + error (_("Invalid address size in %s section!\n"), + section->name); + break; + } + + /* The DWARF spec does not require that the address size be a power + of two, but we do. This will have to change if we ever encounter + an uneven architecture. */ + if ((address_size & (address_size - 1)) != 0) + { + warn (_("Pointer size + Segment size is not a power of two.\n")); + break; + } + + if (address_size > 4) + printf (_("\n Address Length\n")); + else + printf (_("\n Address Length\n")); + + addr_ranges = hdrptr; + + /* Must pad to an alignment boundary that is twice the address size. */ + excess = (hdrptr - start) % (2 * address_size); + if (excess) + addr_ranges += (2 * address_size) - excess; + + start += arange.ar_length + initial_length_size; + + while (addr_ranges + 2 * address_size <= start) + { + SAFE_BYTE_GET_AND_INC (address, addr_ranges, address_size, end); + SAFE_BYTE_GET_AND_INC (length, addr_ranges, address_size, end); + + printf (" "); + print_dwarf_vma (address, address_size); + print_dwarf_vma (length, address_size); + putchar ('\n'); + } + } + + printf ("\n"); + + return 1; +} + +/* Comparison function for qsort. */ +static int +comp_addr_base (const void * v0, const void * v1) +{ + debug_info * info0 = (debug_info *) v0; + debug_info * info1 = (debug_info *) v1; + return info0->addr_base - info1->addr_base; +} + +/* Display the debug_addr section. */ +static int +display_debug_addr (struct dwarf_section *section, + void *file) +{ + debug_info **debug_addr_info; + unsigned char *entry; + unsigned char *end; + unsigned int i; + unsigned int count; + + if (section->size == 0) + { + printf (_("\nThe %s section is empty.\n"), section->name); + return 0; + } + + if (load_debug_info (file) == 0) + { + warn (_("Unable to load/parse the .debug_info section, so cannot interpret the %s section.\n"), + section->name); + return 0; + } + + introduce (section, FALSE); + + /* PR 17531: file: cf38d01b. + We use xcalloc because a corrupt file may not have initialised all of the + fields in the debug_info structure, which means that the sort below might + try to move uninitialised data. */ + debug_addr_info = (debug_info **) xcalloc ((num_debug_info_entries + 1), + sizeof (debug_info *)); + + count = 0; + for (i = 0; i < num_debug_info_entries; i++) + if (debug_information [i].addr_base != DEBUG_INFO_UNAVAILABLE) + { + /* PR 17531: file: cf38d01b. */ + if (debug_information[i].addr_base >= section->size) + warn (_("Corrupt address base (%lx) found in debug section %u\n"), + (unsigned long) debug_information[i].addr_base, i); + else + debug_addr_info [count++] = debug_information + i; + } + + /* Add a sentinel to make iteration convenient. */ + debug_addr_info [count] = (debug_info *) xmalloc (sizeof (debug_info)); + debug_addr_info [count]->addr_base = section->size; + qsort (debug_addr_info, count, sizeof (debug_info *), comp_addr_base); + + for (i = 0; i < count; i++) + { + unsigned int idx; + unsigned int address_size = debug_addr_info [i]->pointer_size; + + printf (_(" For compilation unit at offset 0x%s:\n"), + dwarf_vmatoa ("x", debug_addr_info [i]->cu_offset)); + + printf (_("\tIndex\tAddress\n")); + entry = section->start + debug_addr_info [i]->addr_base; + end = section->start + debug_addr_info [i + 1]->addr_base; + idx = 0; + while (entry < end) + { + dwarf_vma base = byte_get (entry, address_size); + printf (_("\t%d:\t"), idx); + print_dwarf_vma (base, address_size); + printf ("\n"); + entry += address_size; + idx++; + } + } + printf ("\n"); + + free (debug_addr_info); + return 1; +} + +/* Display the .debug_str_offsets and .debug_str_offsets.dwo sections. */ +static int +display_debug_str_offsets (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED) +{ + if (section->size == 0) + { + printf (_("\nThe %s section is empty.\n"), section->name); + return 0; + } + /* TODO: Dump the contents. This is made somewhat difficult by not knowing + what the offset size is for this section. */ + return 1; +} + +/* Each debug_information[x].range_lists[y] gets this representation for + sorting purposes. */ + +struct range_entry +{ + /* The debug_information[x].range_lists[y] value. */ + dwarf_vma ranges_offset; + + /* Original debug_information to find parameters of the data. */ + debug_info *debug_info_p; +}; + +/* Sort struct range_entry in ascending order of its RANGES_OFFSET. */ + +static int +range_entry_compar (const void *ap, const void *bp) +{ + const struct range_entry *a_re = (const struct range_entry *) ap; + const struct range_entry *b_re = (const struct range_entry *) bp; + const dwarf_vma a = a_re->ranges_offset; + const dwarf_vma b = b_re->ranges_offset; + + return (a > b) - (b > a); +} + +static void +display_debug_ranges_list (unsigned char *start, unsigned char *finish, + unsigned int pointer_size, unsigned long offset, + unsigned long base_address) +{ + while (start < finish) + { + dwarf_vma begin; + dwarf_vma end; + + SAFE_BYTE_GET_AND_INC (begin, start, pointer_size, finish); + if (start >= finish) + break; + SAFE_SIGNED_BYTE_GET_AND_INC (end, start, pointer_size, finish); + + + printf (" %8.8lx ", offset); + + if (begin == 0 && end == 0) + { + printf (_("\n")); + break; + } + + /* Check base address specifiers. */ + if (is_max_address (begin, pointer_size) + && !is_max_address (end, pointer_size)) + { + base_address = end; + print_dwarf_vma (begin, pointer_size); + print_dwarf_vma (end, pointer_size); + printf ("(base address)\n"); + continue; + } + + print_dwarf_vma (begin + base_address, pointer_size); + print_dwarf_vma (end + base_address, pointer_size); + + if (begin == end) + fputs (_("(start == end)"), stdout); + else if (begin > end) + fputs (_("(start > end)"), stdout); + + putchar ('\n'); + } +} + +static void +display_debug_rnglists_list (unsigned char *start, unsigned char *finish, + unsigned int pointer_size, unsigned long offset, + unsigned long base_address) +{ + unsigned char *next = start; + + while (1) + { + unsigned long off = offset + (start - next); + enum dwarf_range_list_entry rlet; + /* Initialize it due to a false compiler warning. */ + dwarf_vma begin = -1, length, end = -1; + unsigned int bytes_read; + + if (start + 1 > finish) + { + warn (_("Range list starting at offset 0x%lx is not terminated.\n"), + offset); + break; + } + + printf (" %8.8lx ", off); + + SAFE_BYTE_GET_AND_INC (rlet, start, 1, finish); + + switch (rlet) + { + case DW_RLE_end_of_list: + printf (_("\n")); + break; + case DW_RLE_base_address: + SAFE_BYTE_GET_AND_INC (base_address, start, pointer_size, finish); + print_dwarf_vma (base_address, pointer_size); + printf (_("(base address)\n")); + break; + case DW_RLE_start_length: + SAFE_BYTE_GET_AND_INC (begin, start, pointer_size, finish); + length = read_uleb128 (start, &bytes_read, finish); + start += bytes_read; + end = begin + length; + break; + case DW_RLE_offset_pair: + begin = read_uleb128 (start, &bytes_read, finish); + start += bytes_read; + end = read_uleb128 (start, &bytes_read, finish); + start += bytes_read; + break; + case DW_RLE_start_end: + SAFE_BYTE_GET_AND_INC (begin, start, pointer_size, finish); + SAFE_BYTE_GET_AND_INC (end, start, pointer_size, finish); + break; + default: + error (_("Invalid range list entry type %d\n"), rlet); + rlet = DW_RLE_end_of_list; + break; + } + if (rlet == DW_RLE_end_of_list) + break; + if (rlet == DW_RLE_base_address) + continue; + + print_dwarf_vma (begin + base_address, pointer_size); + print_dwarf_vma (end + base_address, pointer_size); + + if (begin == end) + fputs (_("(start == end)"), stdout); + else if (begin > end) + fputs (_("(start > end)"), stdout); + + putchar ('\n'); + } +} + +static int +display_debug_ranges (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED) +{ + unsigned char *start = section->start; + unsigned char *last_start = start; + unsigned long bytes = section->size; + unsigned char *section_begin = start; + unsigned char *finish = start + bytes; + unsigned int num_range_list, i; + struct range_entry *range_entries, *range_entry_fill; + int is_rnglists = strstr (section->name, "debug_rnglists") != NULL; + /* Initialize it due to a false compiler warning. */ + unsigned char address_size = 0; + + if (bytes == 0) + { + printf (_("\nThe %s section is empty.\n"), section->name); + return 0; + } + + if (is_rnglists) + { + dwarf_vma initial_length; + unsigned int initial_length_size; + unsigned char segment_selector_size; + unsigned int offset_size, offset_entry_count; + unsigned short version; + + /* Get and check the length of the block. */ + SAFE_BYTE_GET_AND_INC (initial_length, start, 4, finish); + + if (initial_length == 0xffffffff) + { + /* This section is 64-bit DWARF 3. */ + SAFE_BYTE_GET_AND_INC (initial_length, start, 8, finish); + offset_size = 8; + initial_length_size = 12; + } + else + { + offset_size = 4; + initial_length_size = 4; + } + + if (initial_length + initial_length_size > section->size) + { + /* If the length field has a relocation against it, then we should + not complain if it is inaccurate (and probably negative). + It is copied from .debug_line handling code. */ + if (reloc_at (section, (start - section->start) - offset_size)) + { + initial_length = (finish - start) - initial_length_size; + } + else + { + warn (_("The length field (0x%lx) in the debug_rnglists header is wrong - the section is too small\n"), + (long) initial_length); + return 0; + } + } + + /* Get and check the version number. */ + SAFE_BYTE_GET_AND_INC (version, start, 2, finish); + + if (version != 5) + { + warn (_("Only DWARF version 5 debug_rnglists info " + "is currently supported.\n")); + return 0; + } + + SAFE_BYTE_GET_AND_INC (address_size, start, 1, finish); + + SAFE_BYTE_GET_AND_INC (segment_selector_size, start, 1, finish); + if (segment_selector_size != 0) + { + warn (_("The %s section contains " + "unsupported segment selector size: %d.\n"), + section->name, segment_selector_size); + return 0; + } + + SAFE_BYTE_GET_AND_INC (offset_entry_count, start, 4, finish); + if (offset_entry_count != 0) + { + warn (_("The %s section contains " + "unsupported offset entry count: %u.\n"), + section->name, offset_entry_count); + return 0; + } + } + + if (load_debug_info (file) == 0) + { + warn (_("Unable to load/parse the .debug_info section, so cannot interpret the %s section.\n"), + section->name); + return 0; + } + + num_range_list = 0; + for (i = 0; i < num_debug_info_entries; i++) + num_range_list += debug_information [i].num_range_lists; + + if (num_range_list == 0) + { + /* This can happen when the file was compiled with -gsplit-debug + which removes references to range lists from the primary .o file. */ + printf (_("No range lists in .debug_info section.\n")); + return 1; + } + + range_entries = (struct range_entry *) + xmalloc (sizeof (*range_entries) * num_range_list); + range_entry_fill = range_entries; + + for (i = 0; i < num_debug_info_entries; i++) + { + debug_info *debug_info_p = &debug_information[i]; + unsigned int j; + + for (j = 0; j < debug_info_p->num_range_lists; j++) + { + range_entry_fill->ranges_offset = debug_info_p->range_lists[j]; + range_entry_fill->debug_info_p = debug_info_p; + range_entry_fill++; + } + } + + qsort (range_entries, num_range_list, sizeof (*range_entries), + range_entry_compar); + + if (dwarf_check != 0 && range_entries[0].ranges_offset != 0) + warn (_("Range lists in %s section start at 0x%lx\n"), + section->name, (unsigned long) range_entries[0].ranges_offset); + + introduce (section, FALSE); + + printf (_(" Offset Begin End\n")); + + for (i = 0; i < num_range_list; i++) + { + struct range_entry *range_entry = &range_entries[i]; + debug_info *debug_info_p = range_entry->debug_info_p; + unsigned int pointer_size; + dwarf_vma offset; + unsigned char *next; + dwarf_vma base_address; + + pointer_size = (is_rnglists ? address_size : debug_info_p->pointer_size); + offset = range_entry->ranges_offset; + next = section_begin + offset; + base_address = debug_info_p->base_address; + + /* PR 17512: file: 001-101485-0.001:0.1. */ + if (pointer_size < 2 || pointer_size > 8) + { + warn (_("Corrupt pointer size (%d) in debug entry at offset %8.8lx\n"), + pointer_size, (unsigned long) offset); + continue; + } + + if (next < section_begin || next >= finish) + { + warn (_("Corrupt offset (%#8.8lx) in range entry %u\n"), + (unsigned long) offset, i); + continue; + } + + if (dwarf_check != 0 && i > 0) + { + if (start < next) + warn (_("There is a hole [0x%lx - 0x%lx] in %s section.\n"), + (unsigned long) (start - section_begin), + (unsigned long) (next - section_begin), section->name); + else if (start > next) + { + if (next == last_start) + continue; + warn (_("There is an overlap [0x%lx - 0x%lx] in %s section.\n"), + (unsigned long) (start - section_begin), + (unsigned long) (next - section_begin), section->name); + } + } + + start = next; + last_start = next; + + (is_rnglists ? display_debug_rnglists_list : display_debug_ranges_list) + (start, finish, pointer_size, offset, base_address); + } + putchar ('\n'); + + free (range_entries); + + return 1; +} + +typedef struct Frame_Chunk +{ + struct Frame_Chunk *next; + unsigned char *chunk_start; + unsigned int ncols; + /* DW_CFA_{undefined,same_value,offset,register,unreferenced} */ + short int *col_type; + int *col_offset; + char *augmentation; + unsigned int code_factor; + int data_factor; + dwarf_vma pc_begin; + dwarf_vma pc_range; + unsigned int cfa_reg; + dwarf_vma cfa_offset; + unsigned int ra; + unsigned char fde_encoding; + unsigned char cfa_exp; + unsigned char ptr_size; + unsigned char segment_size; +} +Frame_Chunk; + +static const char *const *dwarf_regnames; +static unsigned int dwarf_regnames_count; + +/* A marker for a col_type that means this column was never referenced + in the frame info. */ +#define DW_CFA_unreferenced (-1) + +/* Return 0 if no more space is needed, 1 if more space is needed, + -1 for invalid reg. */ + +static int +frame_need_space (Frame_Chunk *fc, unsigned int reg) +{ + unsigned int prev = fc->ncols; + + if (reg < (unsigned int) fc->ncols) + return 0; + + if (dwarf_regnames_count + && reg > dwarf_regnames_count) + return -1; + + fc->ncols = reg + 1; + /* PR 17512: file: 10450-2643-0.004. + If reg == -1 then this can happen... */ + if (fc->ncols == 0) + return -1; + + /* PR 17512: file: 2844a11d. */ + if (fc->ncols > 1024) + { + error (_("Unfeasibly large register number: %u\n"), reg); + fc->ncols = 0; + /* FIXME: 1024 is an arbitrary limit. Increase it if + we ever encounter a valid binary that exceeds it. */ + return -1; + } + + fc->col_type = (short int *) xcrealloc (fc->col_type, fc->ncols, + sizeof (short int)); + fc->col_offset = (int *) xcrealloc (fc->col_offset, fc->ncols, sizeof (int)); + /* PR 17512: file:002-10025-0.005. */ + if (fc->col_type == NULL || fc->col_offset == NULL) + { + error (_("Out of memory allocating %u columns in dwarf frame arrays\n"), + fc->ncols); + fc->ncols = 0; + return -1; + } + + while (prev < fc->ncols) + { + fc->col_type[prev] = DW_CFA_unreferenced; + fc->col_offset[prev] = 0; + prev++; + } + return 1; +} + +static const char *const dwarf_regnames_i386[] = +{ + "eax", "ecx", "edx", "ebx", /* 0 - 3 */ + "esp", "ebp", "esi", "edi", /* 4 - 7 */ + "eip", "eflags", NULL, /* 8 - 10 */ + "st0", "st1", "st2", "st3", /* 11 - 14 */ + "st4", "st5", "st6", "st7", /* 15 - 18 */ + NULL, NULL, /* 19 - 20 */ + "xmm0", "xmm1", "xmm2", "xmm3", /* 21 - 24 */ + "xmm4", "xmm5", "xmm6", "xmm7", /* 25 - 28 */ + "mm0", "mm1", "mm2", "mm3", /* 29 - 32 */ + "mm4", "mm5", "mm6", "mm7", /* 33 - 36 */ + "fcw", "fsw", "mxcsr", /* 37 - 39 */ + "es", "cs", "ss", "ds", "fs", "gs", NULL, NULL, /* 40 - 47 */ + "tr", "ldtr", /* 48 - 49 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 50 - 57 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 58 - 65 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 66 - 73 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 74 - 81 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 82 - 89 */ + NULL, NULL, NULL, /* 90 - 92 */ + "k0", "k1", "k2", "k3", "k4", "k5", "k6", "k7" /* 93 - 100 */ +}; + +static const char *const dwarf_regnames_iamcu[] = +{ + "eax", "ecx", "edx", "ebx", /* 0 - 3 */ + "esp", "ebp", "esi", "edi", /* 4 - 7 */ + "eip", "eflags", NULL, /* 8 - 10 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 11 - 18 */ + NULL, NULL, /* 19 - 20 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 21 - 28 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 29 - 36 */ + NULL, NULL, NULL, /* 37 - 39 */ + "es", "cs", "ss", "ds", "fs", "gs", NULL, NULL, /* 40 - 47 */ + "tr", "ldtr", /* 48 - 49 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 50 - 57 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 58 - 65 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 66 - 73 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 74 - 81 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 82 - 89 */ + NULL, NULL, NULL, /* 90 - 92 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL /* 93 - 100 */ +}; + +void +init_dwarf_regnames_i386 (void) +{ + dwarf_regnames = dwarf_regnames_i386; + dwarf_regnames_count = ARRAY_SIZE (dwarf_regnames_i386); +} + +void +init_dwarf_regnames_iamcu (void) +{ + dwarf_regnames = dwarf_regnames_iamcu; + dwarf_regnames_count = ARRAY_SIZE (dwarf_regnames_iamcu); +} + +static const char *const dwarf_regnames_x86_64[] = +{ + "rax", "rdx", "rcx", "rbx", + "rsi", "rdi", "rbp", "rsp", + "r8", "r9", "r10", "r11", + "r12", "r13", "r14", "r15", + "rip", + "xmm0", "xmm1", "xmm2", "xmm3", + "xmm4", "xmm5", "xmm6", "xmm7", + "xmm8", "xmm9", "xmm10", "xmm11", + "xmm12", "xmm13", "xmm14", "xmm15", + "st0", "st1", "st2", "st3", + "st4", "st5", "st6", "st7", + "mm0", "mm1", "mm2", "mm3", + "mm4", "mm5", "mm6", "mm7", + "rflags", + "es", "cs", "ss", "ds", "fs", "gs", NULL, NULL, + "fs.base", "gs.base", NULL, NULL, + "tr", "ldtr", + "mxcsr", "fcw", "fsw", + "xmm16", "xmm17", "xmm18", "xmm19", + "xmm20", "xmm21", "xmm22", "xmm23", + "xmm24", "xmm25", "xmm26", "xmm27", + "xmm28", "xmm29", "xmm30", "xmm31", + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 83 - 90 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 91 - 98 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 99 - 106 */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 107 - 114 */ + NULL, NULL, NULL, /* 115 - 117 */ + "k0", "k1", "k2", "k3", "k4", "k5", "k6", "k7" +}; + +void +init_dwarf_regnames_x86_64 (void) +{ + dwarf_regnames = dwarf_regnames_x86_64; + dwarf_regnames_count = ARRAY_SIZE (dwarf_regnames_x86_64); +} + +static const char *const dwarf_regnames_aarch64[] = +{ + "x0", "x1", "x2", "x3", "x4", "x5", "x6", "x7", + "x8", "x9", "x10", "x11", "x12", "x13", "x14", "x15", + "x16", "x17", "x18", "x19", "x20", "x21", "x22", "x23", + "x24", "x25", "x26", "x27", "x28", "x29", "x30", "sp", + NULL, "elr", NULL, NULL, NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", + "v8", "v9", "v10", "v11", "v12", "v13", "v14", "v15", + "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", + "v24", "v25", "v26", "v27", "v28", "v29", "v30", "v31", +}; + +void +init_dwarf_regnames_aarch64 (void) +{ + dwarf_regnames = dwarf_regnames_aarch64; + dwarf_regnames_count = ARRAY_SIZE (dwarf_regnames_aarch64); +} + +static const char *const dwarf_regnames_s390[] = +{ + /* Avoid saying "r5 (r5)", so omit the names of r0-r15. */ + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, + "f0", "f2", "f4", "f6", "f1", "f3", "f5", "f7", + "f8", "f10", "f12", "f14", "f9", "f11", "f13", "f15", + "cr0", "cr1", "cr2", "cr3", "cr4", "cr5", "cr6", "cr7", + "cr8", "cr9", "cr10", "cr11", "cr12", "cr13", "cr14", "cr15", + "a0", "a1", "a2", "a3", "a4", "a5", "a6", "a7", + "a8", "a9", "a10", "a11", "a12", "a13", "a14", "a15", + "pswm", "pswa", + NULL, NULL, + "v16", "v18", "v20", "v22", "v17", "v19", "v21", "v23", + "v24", "v26", "v28", "v30", "v25", "v27", "v29", "v31", +}; + +void +init_dwarf_regnames_s390 (void) +{ + dwarf_regnames = dwarf_regnames_s390; + dwarf_regnames_count = ARRAY_SIZE (dwarf_regnames_s390); +} + +static const char *const dwarf_regnames_riscv[] = +{ + "zero", "ra", "sp", "gp", "tp", "t0", "t1", "t2", /* 0 - 7 */ + "s0", "s1", "a0", "a1", "a2", "a3", "a4", "a5", /* 8 - 15 */ + "a6", "a7", "s2", "s3", "s4", "s5", "s6", "s7", /* 16 - 23 */ + "s8", "s9", "s10", "s11", "t3", "t4", "t5", "t6", /* 24 - 31 */ + "ft0", "ft1", "ft2", "ft3", "ft4", "ft5", "ft6", "ft7", /* 32 - 39 */ + "fs0", "fs1", /* 40 - 41 */ + "fa0", "fa1", "fa2", "fa3", "fa4", "fa5", "fa6", "fa7", /* 42 - 49 */ + "fs2", "fs3", "fs4", "fs5", "fs6", "fs7", "fs8", "fs9", /* 50 - 57 */ + "fs10", "fs11", /* 58 - 59 */ + "ft8", "ft9", "ft10", "ft11" /* 60 - 63 */ +}; + +void +init_dwarf_regnames_riscv (void) +{ + dwarf_regnames = dwarf_regnames_riscv; + dwarf_regnames_count = ARRAY_SIZE (dwarf_regnames_riscv); +} + +void +init_dwarf_regnames (unsigned int e_machine) +{ + switch (e_machine) + { + case EM_386: + init_dwarf_regnames_i386 (); + break; + + case EM_IAMCU: + init_dwarf_regnames_iamcu (); + break; + + case EM_X86_64: + case EM_L1OM: + case EM_K1OM: + init_dwarf_regnames_x86_64 (); + break; + + case EM_AARCH64: + init_dwarf_regnames_aarch64 (); + break; + + case EM_S390: + init_dwarf_regnames_s390 (); + break; + + case EM_RISCV: + init_dwarf_regnames_riscv (); + break; + + default: + break; + } +} + +static const char * +regname (unsigned int regno, int row) +{ + static char reg[64]; + + if (dwarf_regnames + && regno < dwarf_regnames_count + && dwarf_regnames [regno] != NULL) + { + if (row) + return dwarf_regnames [regno]; + snprintf (reg, sizeof (reg), "r%d (%s)", regno, + dwarf_regnames [regno]); + } + else + snprintf (reg, sizeof (reg), "r%d", regno); + return reg; +} + +static void +frame_display_row (Frame_Chunk *fc, int *need_col_headers, unsigned int *max_regs) +{ + unsigned int r; + char tmp[100]; + + if (*max_regs != fc->ncols) + *max_regs = fc->ncols; + + if (*need_col_headers) + { + static const char *sloc = " LOC"; + + *need_col_headers = 0; + + printf ("%-*s CFA ", eh_addr_size * 2, sloc); + + for (r = 0; r < *max_regs; r++) + if (fc->col_type[r] != DW_CFA_unreferenced) + { + if (r == fc->ra) + printf ("ra "); + else + printf ("%-5s ", regname (r, 1)); + } + + printf ("\n"); + } + + print_dwarf_vma (fc->pc_begin, eh_addr_size); + if (fc->cfa_exp) + strcpy (tmp, "exp"); + else + sprintf (tmp, "%s%+d", regname (fc->cfa_reg, 1), (int) fc->cfa_offset); + printf ("%-8s ", tmp); + + for (r = 0; r < fc->ncols; r++) + { + if (fc->col_type[r] != DW_CFA_unreferenced) + { + switch (fc->col_type[r]) + { + case DW_CFA_undefined: + strcpy (tmp, "u"); + break; + case DW_CFA_same_value: + strcpy (tmp, "s"); + break; + case DW_CFA_offset: + sprintf (tmp, "c%+d", fc->col_offset[r]); + break; + case DW_CFA_val_offset: + sprintf (tmp, "v%+d", fc->col_offset[r]); + break; + case DW_CFA_register: + sprintf (tmp, "%s", regname (fc->col_offset[r], 0)); + break; + case DW_CFA_expression: + strcpy (tmp, "exp"); + break; + case DW_CFA_val_expression: + strcpy (tmp, "vexp"); + break; + default: + strcpy (tmp, "n/a"); + break; + } + printf ("%-5s ", tmp); + } + } + printf ("\n"); +} + +#define GET(VAR, N) SAFE_BYTE_GET_AND_INC (VAR, start, N, end) + +static unsigned char * +read_cie (unsigned char *start, unsigned char *end, + Frame_Chunk **p_cie, int *p_version, + bfd_size_type *p_aug_len, unsigned char **p_aug) +{ + int version; + Frame_Chunk *fc; + unsigned int length_return; + unsigned char *augmentation_data = NULL; + bfd_size_type augmentation_data_len = 0; + + * p_cie = NULL; + /* PR 17512: file: 001-228113-0.004. */ + if (start >= end) + return end; + + fc = (Frame_Chunk *) xmalloc (sizeof (Frame_Chunk)); + memset (fc, 0, sizeof (Frame_Chunk)); + + fc->col_type = (short int *) xmalloc (sizeof (short int)); + fc->col_offset = (int *) xmalloc (sizeof (int)); + + version = *start++; + + fc->augmentation = (char *) start; + /* PR 17512: file: 001-228113-0.004. + Skip past augmentation name, but avoid running off the end of the data. */ + while (start < end) + if (* start ++ == '\0') + break; + if (start == end) + { + warn (_("No terminator for augmentation name\n")); + goto fail; + } + + if (strcmp (fc->augmentation, "eh") == 0) + start += eh_addr_size; + + if (version >= 4) + { + GET (fc->ptr_size, 1); + if (fc->ptr_size < 1 || fc->ptr_size > 8) + { + warn (_("Invalid pointer size (%d) in CIE data\n"), fc->ptr_size); + goto fail; + } + + GET (fc->segment_size, 1); + /* PR 17512: file: e99d2804. */ + if (fc->segment_size > 8 || fc->segment_size + fc->ptr_size > 8) + { + warn (_("Invalid segment size (%d) in CIE data\n"), fc->segment_size); + goto fail; + } + + eh_addr_size = fc->ptr_size; + } + else + { + fc->ptr_size = eh_addr_size; + fc->segment_size = 0; + } + + READ_ULEB (fc->code_factor); + READ_SLEB (fc->data_factor); + + if (version == 1) + { + GET (fc->ra, 1); + } + else + { + READ_ULEB (fc->ra); + } + + if (fc->augmentation[0] == 'z') + { + READ_ULEB (augmentation_data_len); + augmentation_data = start; + /* PR 17512: file: 11042-2589-0.004. */ + if (augmentation_data_len > (bfd_size_type) (end - start)) + { + warn (_("Augmentation data too long: 0x%s, expected at most %#lx\n"), + dwarf_vmatoa ("x", augmentation_data_len), + (unsigned long) (end - start)); + goto fail; + } + start += augmentation_data_len; + } + + if (augmentation_data_len) + { + unsigned char *p; + unsigned char *q; + unsigned char *qend; + + p = (unsigned char *) fc->augmentation + 1; + q = augmentation_data; + qend = q + augmentation_data_len; + + while (p < end && q < qend) + { + if (*p == 'L') + q++; + else if (*p == 'P') + q += 1 + size_of_encoded_value (*q); + else if (*p == 'R') + fc->fde_encoding = *q++; + else if (*p == 'S') + ; + else + break; + p++; + } + /* Note - it is OK if this loop terminates with q < qend. + Padding may have been inserted to align the end of the CIE. */ + } + + *p_cie = fc; + if (p_version) + *p_version = version; + if (p_aug_len) + { + *p_aug_len = augmentation_data_len; + *p_aug = augmentation_data; + } + return start; + + fail: + free (fc->col_offset); + free (fc->col_type); + free (fc); + return end; +} + +/* Prints out the contents on the DATA array formatted as unsigned bytes. + If do_wide is not enabled, then formats the output to fit into 80 columns. + PRINTED contains the number of characters already written to the current + output line. */ + +static void +display_data (bfd_size_type printed, + const unsigned char * data, + const bfd_size_type len) +{ + if (do_wide || len < ((80 - printed) / 3)) + for (printed = 0; printed < len; ++printed) + printf (" %02x", data[printed]); + else + { + for (printed = 0; printed < len; ++printed) + { + if (printed % (80 / 3) == 0) + putchar ('\n'); + printf (" %02x", data[printed]); + } + } +} + +/* Prints out the contents on the augmentation data array. + If do_wide is not enabled, then formats the output to fit into 80 columns. */ + +static void +display_augmentation_data (const unsigned char * data, const bfd_size_type len) +{ + bfd_size_type i; + + i = printf (_(" Augmentation data: ")); + display_data (i, data, len); +} + +static int +display_debug_frames (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED) +{ + unsigned char *start = section->start; + unsigned char *end = start + section->size; + unsigned char *section_start = start; + Frame_Chunk *chunks = NULL, *forward_refs = NULL; + Frame_Chunk *remembered_state = NULL; + Frame_Chunk *rs; + bfd_boolean is_eh = strcmp (section->name, ".eh_frame") == 0; + unsigned int length_return; + unsigned int max_regs = 0; + const char *bad_reg = _("bad register: "); + unsigned int saved_eh_addr_size = eh_addr_size; + + introduce (section, FALSE); + + while (start < end) + { + unsigned char *saved_start; + unsigned char *block_end; + dwarf_vma length; + dwarf_vma cie_id; + Frame_Chunk *fc; + Frame_Chunk *cie; + int need_col_headers = 1; + unsigned char *augmentation_data = NULL; + bfd_size_type augmentation_data_len = 0; + unsigned int encoded_ptr_size = saved_eh_addr_size; + unsigned int offset_size; + unsigned int initial_length_size; + bfd_boolean all_nops; + + saved_start = start; + + SAFE_BYTE_GET_AND_INC (length, start, 4, end); + + if (length == 0) + { + printf ("\n%08lx ZERO terminator\n\n", + (unsigned long)(saved_start - section_start)); + /* Skip any zero terminators that directly follow. + A corrupt section size could have loaded a whole + slew of zero filled memory bytes. eg + PR 17512: file: 070-19381-0.004. */ + while (start < end && * start == 0) + ++ start; + continue; + } + + if (length == 0xffffffff) + { + SAFE_BYTE_GET_AND_INC (length, start, 8, end); + offset_size = 8; + initial_length_size = 12; + } + else + { + offset_size = 4; + initial_length_size = 4; + } + + block_end = saved_start + length + initial_length_size; + if (block_end > end || block_end < start) + { + warn ("Invalid length 0x%s in FDE at %#08lx\n", + dwarf_vmatoa_1 (NULL, length, offset_size), + (unsigned long) (saved_start - section_start)); + block_end = end; + } + + SAFE_BYTE_GET_AND_INC (cie_id, start, offset_size, end); + + if (is_eh ? (cie_id == 0) : ((offset_size == 4 && cie_id == DW_CIE_ID) + || (offset_size == 8 && cie_id == DW64_CIE_ID))) + { + int version; + unsigned int mreg; + + start = read_cie (start, end, &cie, &version, + &augmentation_data_len, &augmentation_data); + /* PR 17512: file: 027-135133-0.005. */ + if (cie == NULL) + break; + + fc = cie; + fc->next = chunks; + chunks = fc; + fc->chunk_start = saved_start; + mreg = max_regs > 0 ? max_regs - 1 : 0; + if (mreg < fc->ra) + mreg = fc->ra; + if (frame_need_space (fc, mreg) < 0) + break; + if (fc->fde_encoding) + encoded_ptr_size = size_of_encoded_value (fc->fde_encoding); + + printf ("\n%08lx ", (unsigned long) (saved_start - section_start)); + print_dwarf_vma (length, fc->ptr_size); + print_dwarf_vma (cie_id, offset_size); + + if (do_debug_frames_interp) + { + printf ("CIE \"%s\" cf=%d df=%d ra=%d\n", fc->augmentation, + fc->code_factor, fc->data_factor, fc->ra); + } + else + { + printf ("CIE\n"); + printf (" Version: %d\n", version); + printf (" Augmentation: \"%s\"\n", fc->augmentation); + if (version >= 4) + { + printf (" Pointer Size: %u\n", fc->ptr_size); + printf (" Segment Size: %u\n", fc->segment_size); + } + printf (" Code alignment factor: %u\n", fc->code_factor); + printf (" Data alignment factor: %d\n", fc->data_factor); + printf (" Return address column: %d\n", fc->ra); + + if (augmentation_data_len) + display_augmentation_data (augmentation_data, augmentation_data_len); + + putchar ('\n'); + } + } + else + { + unsigned char *look_for; + static Frame_Chunk fde_fc; + unsigned long segment_selector; + + if (is_eh) + { + dwarf_vma sign = (dwarf_vma) 1 << (offset_size * 8 - 1); + look_for = start - 4 - ((cie_id ^ sign) - sign); + } + else + look_for = section_start + cie_id; + + if (look_for <= saved_start) + { + for (cie = chunks; cie ; cie = cie->next) + if (cie->chunk_start == look_for) + break; + } + else + { + for (cie = forward_refs; cie ; cie = cie->next) + if (cie->chunk_start == look_for) + break; + if (!cie) + { + unsigned int off_size; + unsigned char *cie_scan; + + cie_scan = look_for; + off_size = 4; + SAFE_BYTE_GET_AND_INC (length, cie_scan, 4, end); + if (length == 0xffffffff) + { + SAFE_BYTE_GET_AND_INC (length, cie_scan, 8, end); + off_size = 8; + } + if (length != 0) + { + dwarf_vma c_id; + + SAFE_BYTE_GET_AND_INC (c_id, cie_scan, off_size, end); + if (is_eh + ? c_id == 0 + : ((off_size == 4 && c_id == DW_CIE_ID) + || (off_size == 8 && c_id == DW64_CIE_ID))) + { + int version; + unsigned int mreg; + + read_cie (cie_scan, end, &cie, &version, + &augmentation_data_len, &augmentation_data); + /* PR 17512: file: 3450-2098-0.004. */ + if (cie == NULL) + { + warn (_("Failed to read CIE information\n")); + break; + } + cie->next = forward_refs; + forward_refs = cie; + cie->chunk_start = look_for; + mreg = max_regs > 0 ? max_regs - 1 : 0; + if (mreg < cie->ra) + mreg = cie->ra; + if (frame_need_space (cie, mreg) < 0) + { + warn (_("Invalid max register\n")); + break; + } + if (cie->fde_encoding) + encoded_ptr_size + = size_of_encoded_value (cie->fde_encoding); + } + } + } + } + + fc = &fde_fc; + memset (fc, 0, sizeof (Frame_Chunk)); + + if (!cie) + { + warn ("Invalid CIE pointer 0x%s in FDE at %#08lx\n", + dwarf_vmatoa_1 (NULL, cie_id, offset_size), + (unsigned long) (saved_start - section_start)); + fc->ncols = 0; + fc->col_type = (short int *) xmalloc (sizeof (short int)); + fc->col_offset = (int *) xmalloc (sizeof (int)); + if (frame_need_space (fc, max_regs > 0 ? max_regs - 1 : 0) < 0) + { + warn (_("Invalid max register\n")); + break; + } + cie = fc; + fc->augmentation = ""; + fc->fde_encoding = 0; + fc->ptr_size = eh_addr_size; + fc->segment_size = 0; + } + else + { + fc->ncols = cie->ncols; + fc->col_type = (short int *) xcmalloc (fc->ncols, sizeof (short int)); + fc->col_offset = (int *) xcmalloc (fc->ncols, sizeof (int)); + memcpy (fc->col_type, cie->col_type, fc->ncols * sizeof (short int)); + memcpy (fc->col_offset, cie->col_offset, fc->ncols * sizeof (int)); + fc->augmentation = cie->augmentation; + fc->ptr_size = cie->ptr_size; + eh_addr_size = cie->ptr_size; + fc->segment_size = cie->segment_size; + fc->code_factor = cie->code_factor; + fc->data_factor = cie->data_factor; + fc->cfa_reg = cie->cfa_reg; + fc->cfa_offset = cie->cfa_offset; + fc->ra = cie->ra; + if (frame_need_space (fc, max_regs > 0 ? max_regs - 1: 0) < 0) + { + warn (_("Invalid max register\n")); + break; + } + fc->fde_encoding = cie->fde_encoding; + } + + if (fc->fde_encoding) + encoded_ptr_size = size_of_encoded_value (fc->fde_encoding); + + segment_selector = 0; + if (fc->segment_size) + { + if (fc->segment_size > sizeof (segment_selector)) + { + /* PR 17512: file: 9e196b3e. */ + warn (_("Probably corrupt segment size: %d - using 4 instead\n"), fc->segment_size); + fc->segment_size = 4; + } + SAFE_BYTE_GET_AND_INC (segment_selector, start, fc->segment_size, end); + } + + fc->pc_begin = get_encoded_value (&start, fc->fde_encoding, section, end); + + /* FIXME: It appears that sometimes the final pc_range value is + encoded in less than encoded_ptr_size bytes. See the x86_64 + run of the "objcopy on compressed debug sections" test for an + example of this. */ + SAFE_BYTE_GET_AND_INC (fc->pc_range, start, encoded_ptr_size, end); + + if (cie->augmentation[0] == 'z') + { + READ_ULEB (augmentation_data_len); + augmentation_data = start; + start += augmentation_data_len; + /* PR 17512 file: 722-8446-0.004 and PR 22386. */ + if (start >= end + || ((bfd_signed_vma) augmentation_data_len) < 0 + || augmentation_data > start) + { + warn (_("Corrupt augmentation data length: 0x%s\n"), + dwarf_vmatoa ("x", augmentation_data_len)); + start = end; + augmentation_data = NULL; + augmentation_data_len = 0; + } + } + + printf ("\n%08lx %s %s FDE cie=%08lx pc=", + (unsigned long)(saved_start - section_start), + dwarf_vmatoa_1 (NULL, length, fc->ptr_size), + dwarf_vmatoa_1 (NULL, cie_id, offset_size), + (unsigned long)(cie->chunk_start - section_start)); + + if (fc->segment_size) + printf ("%04lx:", segment_selector); + + printf ("%s..%s\n", + dwarf_vmatoa_1 (NULL, fc->pc_begin, fc->ptr_size), + dwarf_vmatoa_1 (NULL, fc->pc_begin + fc->pc_range, fc->ptr_size)); + + if (! do_debug_frames_interp && augmentation_data_len) + { + display_augmentation_data (augmentation_data, augmentation_data_len); + putchar ('\n'); + } + } + + /* At this point, fc is the current chunk, cie (if any) is set, and + we're about to interpret instructions for the chunk. */ + /* ??? At present we need to do this always, since this sizes the + fc->col_type and fc->col_offset arrays, which we write into always. + We should probably split the interpreted and non-interpreted bits + into two different routines, since there's so much that doesn't + really overlap between them. */ + if (1 || do_debug_frames_interp) + { + /* Start by making a pass over the chunk, allocating storage + and taking note of what registers are used. */ + unsigned char *tmp = start; + + while (start < block_end) + { + unsigned int reg, op, opa; + unsigned long temp; + unsigned char * new_start; + + op = *start++; + opa = op & 0x3f; + if (op & 0xc0) + op &= 0xc0; + + /* Warning: if you add any more cases to this switch, be + sure to add them to the corresponding switch below. */ + switch (op) + { + case DW_CFA_advance_loc: + break; + case DW_CFA_offset: + SKIP_ULEB (); + if (frame_need_space (fc, opa) >= 0) + fc->col_type[opa] = DW_CFA_undefined; + break; + case DW_CFA_restore: + if (frame_need_space (fc, opa) >= 0) + fc->col_type[opa] = DW_CFA_undefined; + break; + case DW_CFA_set_loc: + start += encoded_ptr_size; + break; + case DW_CFA_advance_loc1: + start += 1; + break; + case DW_CFA_advance_loc2: + start += 2; + break; + case DW_CFA_advance_loc4: + start += 4; + break; + case DW_CFA_offset_extended: + case DW_CFA_val_offset: + READ_ULEB (reg); + SKIP_ULEB (); + if (frame_need_space (fc, reg) >= 0) + fc->col_type[reg] = DW_CFA_undefined; + break; + case DW_CFA_restore_extended: + READ_ULEB (reg); + if (frame_need_space (fc, reg) >= 0) + fc->col_type[reg] = DW_CFA_undefined; + break; + case DW_CFA_undefined: + READ_ULEB (reg); + if (frame_need_space (fc, reg) >= 0) + fc->col_type[reg] = DW_CFA_undefined; + break; + case DW_CFA_same_value: + READ_ULEB (reg); + if (frame_need_space (fc, reg) >= 0) + fc->col_type[reg] = DW_CFA_undefined; + break; + case DW_CFA_register: + READ_ULEB (reg); + SKIP_ULEB (); + if (frame_need_space (fc, reg) >= 0) + fc->col_type[reg] = DW_CFA_undefined; + break; + case DW_CFA_def_cfa: + SKIP_ULEB (); + SKIP_ULEB (); + break; + case DW_CFA_def_cfa_register: + SKIP_ULEB (); + break; + case DW_CFA_def_cfa_offset: + SKIP_ULEB (); + break; + case DW_CFA_def_cfa_expression: + READ_ULEB (temp); + new_start = start + temp; + if (new_start < start) + { + warn (_("Corrupt CFA_def expression value: %lu\n"), temp); + start = block_end; + } + else + start = new_start; + break; + case DW_CFA_expression: + case DW_CFA_val_expression: + READ_ULEB (reg); + READ_ULEB (temp); + new_start = start + temp; + if (new_start < start) + { + /* PR 17512: file:306-192417-0.005. */ + warn (_("Corrupt CFA expression value: %lu\n"), temp); + start = block_end; + } + else + start = new_start; + if (frame_need_space (fc, reg) >= 0) + fc->col_type[reg] = DW_CFA_undefined; + break; + case DW_CFA_offset_extended_sf: + case DW_CFA_val_offset_sf: + READ_ULEB (reg); + SKIP_SLEB (); + if (frame_need_space (fc, reg) >= 0) + fc->col_type[reg] = DW_CFA_undefined; + break; + case DW_CFA_def_cfa_sf: + SKIP_ULEB (); + SKIP_SLEB (); + break; + case DW_CFA_def_cfa_offset_sf: + SKIP_SLEB (); + break; + case DW_CFA_MIPS_advance_loc8: + start += 8; + break; + case DW_CFA_GNU_args_size: + SKIP_ULEB (); + break; + case DW_CFA_GNU_negative_offset_extended: + READ_ULEB (reg); + SKIP_ULEB (); + if (frame_need_space (fc, reg) >= 0) + fc->col_type[reg] = DW_CFA_undefined; + break; + default: + break; + } + } + start = tmp; + } + + all_nops = TRUE; + + /* Now we know what registers are used, make a second pass over + the chunk, this time actually printing out the info. */ + + while (start < block_end) + { + unsigned char * tmp; + unsigned op, opa; + unsigned long ul, roffs; + /* Note: It is tempting to use an unsigned long for 'reg' but there + are various functions, notably frame_space_needed() that assume that + reg is an unsigned int. */ + unsigned int reg; + dwarf_signed_vma l; + dwarf_vma ofs; dwarf_vma vma; const char *reg_prefix = ""; - op = *start++; - opa = op & 0x3f; - if (op & 0xc0) - op &= 0xc0; + op = *start++; + opa = op & 0x3f; + if (op & 0xc0) + op &= 0xc0; + + /* Make a note if something other than DW_CFA_nop happens. */ + if (op != DW_CFA_nop) + all_nops = FALSE; + + /* Warning: if you add any more cases to this switch, be + sure to add them to the corresponding switch above. */ + switch (op) + { + case DW_CFA_advance_loc: + if (do_debug_frames_interp) + frame_display_row (fc, &need_col_headers, &max_regs); + else + printf (" DW_CFA_advance_loc: %d to %s\n", + opa * fc->code_factor, + dwarf_vmatoa_1 (NULL, + fc->pc_begin + opa * fc->code_factor, + fc->ptr_size)); + fc->pc_begin += opa * fc->code_factor; + break; + + case DW_CFA_offset: + READ_ULEB (roffs); + if (opa >= (unsigned int) fc->ncols) + reg_prefix = bad_reg; + if (! do_debug_frames_interp || *reg_prefix != '\0') + printf (" DW_CFA_offset: %s%s at cfa%+ld\n", + reg_prefix, regname (opa, 0), + roffs * fc->data_factor); + if (*reg_prefix == '\0') + { + fc->col_type[opa] = DW_CFA_offset; + fc->col_offset[opa] = roffs * fc->data_factor; + } + break; + + case DW_CFA_restore: + if (opa >= (unsigned int) fc->ncols) + reg_prefix = bad_reg; + if (! do_debug_frames_interp || *reg_prefix != '\0') + printf (" DW_CFA_restore: %s%s\n", + reg_prefix, regname (opa, 0)); + if (*reg_prefix != '\0') + break; + + if (opa >= (unsigned int) cie->ncols + || (do_debug_frames_interp + && cie->col_type[opa] == DW_CFA_unreferenced)) + { + fc->col_type[opa] = DW_CFA_undefined; + fc->col_offset[opa] = 0; + } + else + { + fc->col_type[opa] = cie->col_type[opa]; + fc->col_offset[opa] = cie->col_offset[opa]; + } + break; + + case DW_CFA_set_loc: + vma = get_encoded_value (&start, fc->fde_encoding, section, block_end); + if (do_debug_frames_interp) + frame_display_row (fc, &need_col_headers, &max_regs); + else + printf (" DW_CFA_set_loc: %s\n", + dwarf_vmatoa_1 (NULL, vma, fc->ptr_size)); + fc->pc_begin = vma; + break; + + case DW_CFA_advance_loc1: + SAFE_BYTE_GET_AND_INC (ofs, start, 1, end); + if (do_debug_frames_interp) + frame_display_row (fc, &need_col_headers, &max_regs); + else + printf (" DW_CFA_advance_loc1: %ld to %s\n", + (unsigned long) (ofs * fc->code_factor), + dwarf_vmatoa_1 (NULL, + fc->pc_begin + ofs * fc->code_factor, + fc->ptr_size)); + fc->pc_begin += ofs * fc->code_factor; + break; + + case DW_CFA_advance_loc2: + SAFE_BYTE_GET_AND_INC (ofs, start, 2, block_end); + if (do_debug_frames_interp) + frame_display_row (fc, &need_col_headers, &max_regs); + else + printf (" DW_CFA_advance_loc2: %ld to %s\n", + (unsigned long) (ofs * fc->code_factor), + dwarf_vmatoa_1 (NULL, + fc->pc_begin + ofs * fc->code_factor, + fc->ptr_size)); + fc->pc_begin += ofs * fc->code_factor; + break; + + case DW_CFA_advance_loc4: + SAFE_BYTE_GET_AND_INC (ofs, start, 4, block_end); + if (do_debug_frames_interp) + frame_display_row (fc, &need_col_headers, &max_regs); + else + printf (" DW_CFA_advance_loc4: %ld to %s\n", + (unsigned long) (ofs * fc->code_factor), + dwarf_vmatoa_1 (NULL, + fc->pc_begin + ofs * fc->code_factor, + fc->ptr_size)); + fc->pc_begin += ofs * fc->code_factor; + break; + + case DW_CFA_offset_extended: + READ_ULEB (reg); + READ_ULEB (roffs); + if (reg >= (unsigned int) fc->ncols) + reg_prefix = bad_reg; + if (! do_debug_frames_interp || *reg_prefix != '\0') + printf (" DW_CFA_offset_extended: %s%s at cfa%+ld\n", + reg_prefix, regname (reg, 0), + roffs * fc->data_factor); + if (*reg_prefix == '\0') + { + fc->col_type[reg] = DW_CFA_offset; + fc->col_offset[reg] = roffs * fc->data_factor; + } + break; + + case DW_CFA_val_offset: + READ_ULEB (reg); + READ_ULEB (roffs); + if (reg >= (unsigned int) fc->ncols) + reg_prefix = bad_reg; + if (! do_debug_frames_interp || *reg_prefix != '\0') + printf (" DW_CFA_val_offset: %s%s is cfa%+ld\n", + reg_prefix, regname (reg, 0), + roffs * fc->data_factor); + if (*reg_prefix == '\0') + { + fc->col_type[reg] = DW_CFA_val_offset; + fc->col_offset[reg] = roffs * fc->data_factor; + } + break; + + case DW_CFA_restore_extended: + READ_ULEB (reg); + if (reg >= (unsigned int) fc->ncols) + reg_prefix = bad_reg; + if (! do_debug_frames_interp || *reg_prefix != '\0') + printf (" DW_CFA_restore_extended: %s%s\n", + reg_prefix, regname (reg, 0)); + if (*reg_prefix != '\0') + break; + + if (reg >= (unsigned int) cie->ncols) + { + fc->col_type[reg] = DW_CFA_undefined; + fc->col_offset[reg] = 0; + } + else + { + fc->col_type[reg] = cie->col_type[reg]; + fc->col_offset[reg] = cie->col_offset[reg]; + } + break; + + case DW_CFA_undefined: + READ_ULEB (reg); + if (reg >= (unsigned int) fc->ncols) + reg_prefix = bad_reg; + if (! do_debug_frames_interp || *reg_prefix != '\0') + printf (" DW_CFA_undefined: %s%s\n", + reg_prefix, regname (reg, 0)); + if (*reg_prefix == '\0') + { + fc->col_type[reg] = DW_CFA_undefined; + fc->col_offset[reg] = 0; + } + break; + + case DW_CFA_same_value: + READ_ULEB (reg); + if (reg >= (unsigned int) fc->ncols) + reg_prefix = bad_reg; + if (! do_debug_frames_interp || *reg_prefix != '\0') + printf (" DW_CFA_same_value: %s%s\n", + reg_prefix, regname (reg, 0)); + if (*reg_prefix == '\0') + { + fc->col_type[reg] = DW_CFA_same_value; + fc->col_offset[reg] = 0; + } + break; + + case DW_CFA_register: + READ_ULEB (reg); + READ_ULEB (roffs); + if (reg >= (unsigned int) fc->ncols) + reg_prefix = bad_reg; + if (! do_debug_frames_interp || *reg_prefix != '\0') + { + printf (" DW_CFA_register: %s%s in ", + reg_prefix, regname (reg, 0)); + puts (regname (roffs, 0)); + } + if (*reg_prefix == '\0') + { + fc->col_type[reg] = DW_CFA_register; + fc->col_offset[reg] = roffs; + } + break; + + case DW_CFA_remember_state: + if (! do_debug_frames_interp) + printf (" DW_CFA_remember_state\n"); + rs = (Frame_Chunk *) xmalloc (sizeof (Frame_Chunk)); + rs->cfa_offset = fc->cfa_offset; + rs->cfa_reg = fc->cfa_reg; + rs->ra = fc->ra; + rs->cfa_exp = fc->cfa_exp; + rs->ncols = fc->ncols; + rs->col_type = (short int *) xcmalloc (rs->ncols, + sizeof (* rs->col_type)); + rs->col_offset = (int *) xcmalloc (rs->ncols, sizeof (* rs->col_offset)); + memcpy (rs->col_type, fc->col_type, rs->ncols * sizeof (* fc->col_type)); + memcpy (rs->col_offset, fc->col_offset, rs->ncols * sizeof (* fc->col_offset)); + rs->next = remembered_state; + remembered_state = rs; + break; + + case DW_CFA_restore_state: + if (! do_debug_frames_interp) + printf (" DW_CFA_restore_state\n"); + rs = remembered_state; + if (rs) + { + remembered_state = rs->next; + fc->cfa_offset = rs->cfa_offset; + fc->cfa_reg = rs->cfa_reg; + fc->ra = rs->ra; + fc->cfa_exp = rs->cfa_exp; + if (frame_need_space (fc, rs->ncols - 1) < 0) + { + warn (_("Invalid column number in saved frame state\n")); + fc->ncols = 0; + break; + } + memcpy (fc->col_type, rs->col_type, rs->ncols * sizeof (* rs->col_type)); + memcpy (fc->col_offset, rs->col_offset, + rs->ncols * sizeof (* rs->col_offset)); + free (rs->col_type); + free (rs->col_offset); + free (rs); + } + else if (do_debug_frames_interp) + printf ("Mismatched DW_CFA_restore_state\n"); + break; + + case DW_CFA_def_cfa: + READ_ULEB (fc->cfa_reg); + READ_ULEB (fc->cfa_offset); + fc->cfa_exp = 0; + if (! do_debug_frames_interp) + printf (" DW_CFA_def_cfa: %s ofs %d\n", + regname (fc->cfa_reg, 0), (int) fc->cfa_offset); + break; + + case DW_CFA_def_cfa_register: + READ_ULEB (fc->cfa_reg); + fc->cfa_exp = 0; + if (! do_debug_frames_interp) + printf (" DW_CFA_def_cfa_register: %s\n", + regname (fc->cfa_reg, 0)); + break; + + case DW_CFA_def_cfa_offset: + READ_ULEB (fc->cfa_offset); + if (! do_debug_frames_interp) + printf (" DW_CFA_def_cfa_offset: %d\n", (int) fc->cfa_offset); + break; + + case DW_CFA_nop: + if (! do_debug_frames_interp) + printf (" DW_CFA_nop\n"); + break; + + case DW_CFA_def_cfa_expression: + READ_ULEB (ul); + if (start >= block_end || ul > (unsigned long) (block_end - start)) + { + printf (_(" DW_CFA_def_cfa_expression: \n"), ul); + break; + } + if (! do_debug_frames_interp) + { + printf (" DW_CFA_def_cfa_expression ("); + decode_location_expression (start, eh_addr_size, 0, -1, + ul, 0, section); + printf (")\n"); + } + fc->cfa_exp = 1; + start += ul; + break; + + case DW_CFA_expression: + READ_ULEB (reg); + READ_ULEB (ul); + if (reg >= (unsigned int) fc->ncols) + reg_prefix = bad_reg; + /* PR 17512: file: 069-133014-0.006. */ + /* PR 17512: file: 98c02eb4. */ + tmp = start + ul; + if (start >= block_end || tmp > block_end || tmp < start) + { + printf (_(" DW_CFA_expression: \n"), ul); + break; + } + if (! do_debug_frames_interp || *reg_prefix != '\0') + { + printf (" DW_CFA_expression: %s%s (", + reg_prefix, regname (reg, 0)); + decode_location_expression (start, eh_addr_size, 0, -1, + ul, 0, section); + printf (")\n"); + } + if (*reg_prefix == '\0') + fc->col_type[reg] = DW_CFA_expression; + start = tmp; + break; + + case DW_CFA_val_expression: + READ_ULEB (reg); + READ_ULEB (ul); + if (reg >= (unsigned int) fc->ncols) + reg_prefix = bad_reg; + tmp = start + ul; + if (start >= block_end || tmp > block_end || tmp < start) + { + printf (" DW_CFA_val_expression: \n", ul); + break; + } + if (! do_debug_frames_interp || *reg_prefix != '\0') + { + printf (" DW_CFA_val_expression: %s%s (", + reg_prefix, regname (reg, 0)); + decode_location_expression (start, eh_addr_size, 0, -1, + ul, 0, section); + printf (")\n"); + } + if (*reg_prefix == '\0') + fc->col_type[reg] = DW_CFA_val_expression; + start = tmp; + break; + + case DW_CFA_offset_extended_sf: + READ_ULEB (reg); + READ_SLEB (l); + if (frame_need_space (fc, reg) < 0) + reg_prefix = bad_reg; + if (! do_debug_frames_interp || *reg_prefix != '\0') + printf (" DW_CFA_offset_extended_sf: %s%s at cfa%+ld\n", + reg_prefix, regname (reg, 0), + (long)(l * fc->data_factor)); + if (*reg_prefix == '\0') + { + fc->col_type[reg] = DW_CFA_offset; + fc->col_offset[reg] = l * fc->data_factor; + } + break; + + case DW_CFA_val_offset_sf: + READ_ULEB (reg); + READ_SLEB (l); + if (frame_need_space (fc, reg) < 0) + reg_prefix = bad_reg; + if (! do_debug_frames_interp || *reg_prefix != '\0') + printf (" DW_CFA_val_offset_sf: %s%s is cfa%+ld\n", + reg_prefix, regname (reg, 0), + (long)(l * fc->data_factor)); + if (*reg_prefix == '\0') + { + fc->col_type[reg] = DW_CFA_val_offset; + fc->col_offset[reg] = l * fc->data_factor; + } + break; + + case DW_CFA_def_cfa_sf: + READ_ULEB (fc->cfa_reg); + READ_ULEB (fc->cfa_offset); + fc->cfa_offset = fc->cfa_offset * fc->data_factor; + fc->cfa_exp = 0; + if (! do_debug_frames_interp) + printf (" DW_CFA_def_cfa_sf: %s ofs %d\n", + regname (fc->cfa_reg, 0), (int) fc->cfa_offset); + break; + + case DW_CFA_def_cfa_offset_sf: + READ_ULEB (fc->cfa_offset); + fc->cfa_offset *= fc->data_factor; + if (! do_debug_frames_interp) + printf (" DW_CFA_def_cfa_offset_sf: %d\n", (int) fc->cfa_offset); + break; + + case DW_CFA_MIPS_advance_loc8: + SAFE_BYTE_GET_AND_INC (ofs, start, 8, block_end); + if (do_debug_frames_interp) + frame_display_row (fc, &need_col_headers, &max_regs); + else + printf (" DW_CFA_MIPS_advance_loc8: %ld to %s\n", + (unsigned long) (ofs * fc->code_factor), + dwarf_vmatoa_1 (NULL, + fc->pc_begin + ofs * fc->code_factor, + fc->ptr_size)); + fc->pc_begin += ofs * fc->code_factor; + break; + + case DW_CFA_GNU_window_save: + if (! do_debug_frames_interp) + printf (" DW_CFA_GNU_window_save\n"); + break; + + case DW_CFA_GNU_args_size: + READ_ULEB (ul); + if (! do_debug_frames_interp) + printf (" DW_CFA_GNU_args_size: %ld\n", ul); + break; + + case DW_CFA_GNU_negative_offset_extended: + READ_ULEB (reg); + READ_SLEB (l); + l = - l; + if (frame_need_space (fc, reg) < 0) + reg_prefix = bad_reg; + if (! do_debug_frames_interp || *reg_prefix != '\0') + printf (" DW_CFA_GNU_negative_offset_extended: %s%s at cfa%+ld\n", + reg_prefix, regname (reg, 0), + (long)(l * fc->data_factor)); + if (*reg_prefix == '\0') + { + fc->col_type[reg] = DW_CFA_offset; + fc->col_offset[reg] = l * fc->data_factor; + } + break; + + default: + if (op >= DW_CFA_lo_user && op <= DW_CFA_hi_user) + printf (_(" DW_CFA_??? (User defined call frame op: %#x)\n"), op); + else + warn (_("Unsupported or unknown Dwarf Call Frame Instruction number: %#x\n"), op); + start = block_end; + } + } + + /* Interpret the CFA - as long as it is not completely full of NOPs. */ + if (do_debug_frames_interp && ! all_nops) + frame_display_row (fc, &need_col_headers, &max_regs); + + start = block_end; + eh_addr_size = saved_eh_addr_size; + } + + printf ("\n"); + + while (remembered_state != NULL) + { + rs = remembered_state; + remembered_state = rs->next; + free (rs->col_type); + free (rs->col_offset); + rs->next = NULL; /* Paranoia. */ + free (rs); + } + + while (chunks != NULL) + { + rs = chunks; + chunks = rs->next; + free (rs->col_type); + free (rs->col_offset); + rs->next = NULL; /* Paranoia. */ + free (rs); + } + + while (forward_refs != NULL) + { + rs = forward_refs; + forward_refs = rs->next; + free (rs->col_type); + free (rs->col_offset); + rs->next = NULL; /* Paranoia. */ + free (rs); + } + + return 1; +} + +#undef GET + +static int +display_debug_names (struct dwarf_section *section, void *file) +{ + unsigned char *hdrptr = section->start; + dwarf_vma unit_length; + unsigned char *unit_start; + const unsigned char *const section_end = section->start + section->size; + unsigned char *unit_end; + + introduce (section, FALSE); + + load_debug_section_with_follow (str, file); + + for (; hdrptr < section_end; hdrptr = unit_end) + { + unsigned int offset_size; + uint16_t dwarf_version, padding; + uint32_t comp_unit_count, local_type_unit_count, foreign_type_unit_count; + uint32_t bucket_count, name_count, abbrev_table_size; + uint32_t augmentation_string_size; + unsigned int i; + unsigned long sec_off; + + unit_start = hdrptr; + + /* Get and check the length of the block. */ + SAFE_BYTE_GET_AND_INC (unit_length, hdrptr, 4, section_end); + + if (unit_length == 0xffffffff) + { + /* This section is 64-bit DWARF. */ + SAFE_BYTE_GET_AND_INC (unit_length, hdrptr, 8, section_end); + offset_size = 8; + } + else + offset_size = 4; + unit_end = hdrptr + unit_length; + + sec_off = hdrptr - section->start; + if (sec_off + unit_length < sec_off + || sec_off + unit_length > section->size) + { + warn (_("Debug info is corrupted, %s header at %#lx has length %s\n"), + section->name, + (unsigned long) (unit_start - section->start), + dwarf_vmatoa ("x", unit_length)); + return 0; + } + + /* Get and check the version number. */ + SAFE_BYTE_GET_AND_INC (dwarf_version, hdrptr, 2, unit_end); + printf (_("Version %ld\n"), (long) dwarf_version); + + /* Prior versions did not exist, and future versions may not be + backwards compatible. */ + if (dwarf_version != 5) + { + warn (_("Only DWARF version 5 .debug_names " + "is currently supported.\n")); + return 0; + } + + SAFE_BYTE_GET_AND_INC (padding, hdrptr, 2, unit_end); + if (padding != 0) + warn (_("Padding field of .debug_names must be 0 (found 0x%x)\n"), + padding); + + SAFE_BYTE_GET_AND_INC (comp_unit_count, hdrptr, 4, unit_end); + if (comp_unit_count == 0) + warn (_("Compilation unit count must be >= 1 in .debug_names\n")); + + SAFE_BYTE_GET_AND_INC (local_type_unit_count, hdrptr, 4, unit_end); + SAFE_BYTE_GET_AND_INC (foreign_type_unit_count, hdrptr, 4, unit_end); + SAFE_BYTE_GET_AND_INC (bucket_count, hdrptr, 4, unit_end); + SAFE_BYTE_GET_AND_INC (name_count, hdrptr, 4, unit_end); + SAFE_BYTE_GET_AND_INC (abbrev_table_size, hdrptr, 4, unit_end); + + SAFE_BYTE_GET_AND_INC (augmentation_string_size, hdrptr, 4, unit_end); + if (augmentation_string_size % 4 != 0) + { + warn (_("Augmentation string length %u must be rounded up " + "to a multiple of 4 in .debug_names.\n"), + augmentation_string_size); + augmentation_string_size += (-augmentation_string_size) & 3; + } + printf (_("Augmentation string:")); + for (i = 0; i < augmentation_string_size; i++) + { + unsigned char uc; + + SAFE_BYTE_GET_AND_INC (uc, hdrptr, 1, unit_end); + printf (" %02x", uc); + } + putchar ('\n'); + putchar ('\n'); + + printf (_("CU table:\n")); + for (i = 0; i < comp_unit_count; i++) + { + uint64_t cu_offset; + + SAFE_BYTE_GET_AND_INC (cu_offset, hdrptr, offset_size, unit_end); + printf (_("[%3u] 0x%lx\n"), i, (unsigned long) cu_offset); + } + putchar ('\n'); + + printf (_("TU table:\n")); + for (i = 0; i < local_type_unit_count; i++) + { + uint64_t tu_offset; + + SAFE_BYTE_GET_AND_INC (tu_offset, hdrptr, offset_size, unit_end); + printf (_("[%3u] 0x%lx\n"), i, (unsigned long) tu_offset); + } + putchar ('\n'); + + printf (_("Foreign TU table:\n")); + for (i = 0; i < foreign_type_unit_count; i++) + { + uint64_t signature; + + SAFE_BYTE_GET_AND_INC (signature, hdrptr, 8, unit_end); + printf (_("[%3u] "), i); + print_dwarf_vma (signature, 8); + putchar ('\n'); + } + putchar ('\n'); + + const uint32_t *const hash_table_buckets = (uint32_t *) hdrptr; + hdrptr += bucket_count * sizeof (uint32_t); + const uint32_t *const hash_table_hashes = (uint32_t *) hdrptr; + hdrptr += name_count * sizeof (uint32_t); + unsigned char *const name_table_string_offsets = hdrptr; + hdrptr += name_count * offset_size; + unsigned char *const name_table_entry_offsets = hdrptr; + hdrptr += name_count * offset_size; + unsigned char *const abbrev_table = hdrptr; + hdrptr += abbrev_table_size; + const unsigned char *const abbrev_table_end = hdrptr; + unsigned char *const entry_pool = hdrptr; + if (hdrptr > unit_end) + { + warn (_("Entry pool offset (0x%lx) exceeds unit size 0x%lx " + "for unit 0x%lx in the debug_names\n"), + (long) (hdrptr - section->start), + (long) (unit_end - section->start), + (long) (unit_start - section->start)); + return 0; + } + + size_t buckets_filled = 0; + size_t bucketi; + for (bucketi = 0; bucketi < bucket_count; bucketi++) + { + const uint32_t bucket = hash_table_buckets[bucketi]; + + if (bucket != 0) + ++buckets_filled; + } + printf (ngettext ("Used %zu of %lu bucket.\n", + "Used %zu of %lu buckets.\n", + bucket_count), + buckets_filled, (unsigned long) bucket_count); + + uint32_t hash_prev = 0; + size_t hash_clash_count = 0; + size_t longest_clash = 0; + size_t this_length = 0; + size_t hashi; + for (hashi = 0; hashi < name_count; hashi++) + { + const uint32_t hash_this = hash_table_hashes[hashi]; + + if (hashi > 0) + { + if (hash_prev % bucket_count == hash_this % bucket_count) + { + ++hash_clash_count; + ++this_length; + longest_clash = MAX (longest_clash, this_length); + } + else + this_length = 0; + } + hash_prev = hash_this; + } + printf (_("Out of %lu items there are %zu bucket clashes" + " (longest of %zu entries).\n"), + (unsigned long) name_count, hash_clash_count, longest_clash); + assert (name_count == buckets_filled + hash_clash_count); + + struct abbrev_lookup_entry + { + dwarf_vma abbrev_tag; + unsigned char *abbrev_lookup_ptr; + }; + struct abbrev_lookup_entry *abbrev_lookup = NULL; + size_t abbrev_lookup_used = 0; + size_t abbrev_lookup_allocated = 0; + + unsigned char *abbrevptr = abbrev_table; + for (;;) + { + unsigned int bytes_read; + const dwarf_vma abbrev_tag = read_uleb128 (abbrevptr, &bytes_read, + abbrev_table_end); + abbrevptr += bytes_read; + if (abbrev_tag == 0) + break; + if (abbrev_lookup_used == abbrev_lookup_allocated) + { + abbrev_lookup_allocated = MAX (0x100, + abbrev_lookup_allocated * 2); + abbrev_lookup = xrealloc (abbrev_lookup, + (abbrev_lookup_allocated + * sizeof (*abbrev_lookup))); + } + assert (abbrev_lookup_used < abbrev_lookup_allocated); + struct abbrev_lookup_entry *entry; + for (entry = abbrev_lookup; + entry < abbrev_lookup + abbrev_lookup_used; + entry++) + if (entry->abbrev_tag == abbrev_tag) + { + warn (_("Duplicate abbreviation tag %lu " + "in unit 0x%lx in the debug_names\n"), + (long) abbrev_tag, (long) (unit_start - section->start)); + break; + } + entry = &abbrev_lookup[abbrev_lookup_used++]; + entry->abbrev_tag = abbrev_tag; + entry->abbrev_lookup_ptr = abbrevptr; + + /* Skip DWARF tag. */ + read_uleb128 (abbrevptr, &bytes_read, abbrev_table_end); + abbrevptr += bytes_read; + for (;;) + { + const dwarf_vma xindex = read_uleb128 (abbrevptr, + &bytes_read, + abbrev_table_end); + abbrevptr += bytes_read; + const dwarf_vma form = read_uleb128 (abbrevptr, &bytes_read, + abbrev_table_end); + abbrevptr += bytes_read; + if (xindex == 0 && form == 0) + break; + } + } + + printf (_("\nSymbol table:\n")); + uint32_t namei; + for (namei = 0; namei < name_count; ++namei) + { + uint64_t string_offset, entry_offset; + + SAFE_BYTE_GET (string_offset, + name_table_string_offsets + namei * offset_size, + offset_size, unit_end); + SAFE_BYTE_GET (entry_offset, + name_table_entry_offsets + namei * offset_size, + offset_size, unit_end); + + printf ("[%3u] #%08x %s:", namei, hash_table_hashes[namei], + fetch_indirect_string (string_offset)); + + unsigned char *entryptr = entry_pool + entry_offset; + + // We need to scan first whether there is a single or multiple + // entries. TAGNO is -2 for the first entry, it is -1 for the + // initial tag read of the second entry, then it becomes 0 for the + // first entry for real printing etc. + int tagno = -2; + /* Initialize it due to a false compiler warning. */ + dwarf_vma second_abbrev_tag = -1; + for (;;) + { + unsigned int bytes_read; + const dwarf_vma abbrev_tag = read_uleb128 (entryptr, &bytes_read, + unit_end); + entryptr += bytes_read; + if (tagno == -1) + { + second_abbrev_tag = abbrev_tag; + tagno = 0; + entryptr = entry_pool + entry_offset; + continue; + } + if (abbrev_tag == 0) + break; + if (tagno >= 0) + printf ("%s<%lu>", + (tagno == 0 && second_abbrev_tag == 0 ? " " : "\n\t"), + (unsigned long) abbrev_tag); + + const struct abbrev_lookup_entry *entry; + for (entry = abbrev_lookup; + entry < abbrev_lookup + abbrev_lookup_used; + entry++) + if (entry->abbrev_tag == abbrev_tag) + break; + if (entry >= abbrev_lookup + abbrev_lookup_used) + { + warn (_("Undefined abbreviation tag %lu " + "in unit 0x%lx in the debug_names\n"), + (long) abbrev_tag, + (long) (unit_start - section->start)); + break; + } + abbrevptr = entry->abbrev_lookup_ptr; + const dwarf_vma dwarf_tag = read_uleb128 (abbrevptr, &bytes_read, + abbrev_table_end); + abbrevptr += bytes_read; + if (tagno >= 0) + printf (" %s", get_TAG_name (dwarf_tag)); + for (;;) + { + const dwarf_vma xindex = read_uleb128 (abbrevptr, + &bytes_read, + abbrev_table_end); + abbrevptr += bytes_read; + const dwarf_vma form = read_uleb128 (abbrevptr, &bytes_read, + abbrev_table_end); + abbrevptr += bytes_read; + if (xindex == 0 && form == 0) + break; + + if (tagno >= 0) + printf (" %s", get_IDX_name (xindex)); + entryptr = read_and_display_attr_value (0, form, 0, entryptr, + unit_end, 0, 0, + offset_size, + dwarf_version, NULL, + (tagno < 0), NULL, + NULL, '='); + } + ++tagno; + } + if (tagno <= 0) + printf (_(" ")); + putchar ('\n'); + } + + free (abbrev_lookup); + } + + return 1; +} + +static int +display_debug_links (struct dwarf_section * section, + void * file ATTRIBUTE_UNUSED) +{ + const unsigned char * filename; + unsigned int filelen; + + introduce (section, FALSE); + + /* The .gnu_debuglink section is formatted as: + (c-string) Filename. + (padding) If needed to reach a 4 byte boundary. + (uint32_t) CRC32 value. + + The .gun_debugaltlink section is formatted as: + (c-string) Filename. + (binary) Build-ID. */ + + filename = section->start; + filelen = strnlen ((const char *) filename, section->size); + if (filelen == section->size) + { + warn (_("The debuglink filename is corrupt/missing\n")); + return 0; + } + + printf (_(" Separate debug info file: %s\n"), filename); + + if (const_strneq (section->name, ".gnu_debuglink")) + { + unsigned int crc32; + unsigned int crc_offset; + + crc_offset = filelen + 1; + crc_offset = (crc_offset + 3) & ~3; + if (crc_offset + 4 > section->size) + { + warn (_("CRC offset missing/truncated\n")); + return 0; + } + + crc32 = byte_get (filename + crc_offset, 4); + + printf (_(" CRC value: %#x\n"), crc32); + + if (crc_offset + 4 < section->size) + { + warn (_("There are %#lx extraneous bytes at the end of the section\n"), + (long)(section->size - (crc_offset + 4))); + return 0; + } + } + else /* const_strneq (section->name, ".gnu_debugaltlink") */ + { + const unsigned char * build_id = section->start + filelen + 1; + bfd_size_type build_id_len = section->size - (filelen + 1); + bfd_size_type printed; + + /* FIXME: Should we support smaller build-id notes ? */ + if (build_id_len < 0x14) + { + warn (_("Build-ID is too short (%#lx bytes)\n"), (long) build_id_len); + return 0; + } + + printed = printf (_(" Build-ID (%#lx bytes):"), (long) build_id_len); + display_data (printed, build_id, build_id_len); + putchar ('\n'); + } + + putchar ('\n'); + return 1; +} + +static int +display_gdb_index (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED) +{ + unsigned char *start = section->start; + uint32_t version; + uint32_t cu_list_offset, tu_list_offset; + uint32_t address_table_offset, symbol_table_offset, constant_pool_offset; + unsigned int cu_list_elements, tu_list_elements; + unsigned int address_table_size, symbol_table_slots; + unsigned char *cu_list, *tu_list; + unsigned char *address_table, *symbol_table, *constant_pool; + unsigned int i; + + /* The documentation for the format of this file is in gdb/dwarf2read.c. */ + + introduce (section, FALSE); + + if (section->size < 6 * sizeof (uint32_t)) + { + warn (_("Truncated header in the %s section.\n"), section->name); + return 0; + } + + version = byte_get_little_endian (start, 4); + printf (_("Version %ld\n"), (long) version); + + /* Prior versions are obsolete, and future versions may not be + backwards compatible. */ + if (version < 3 || version > 8) + { + warn (_("Unsupported version %lu.\n"), (unsigned long) version); + return 0; + } + if (version < 4) + warn (_("The address table data in version 3 may be wrong.\n")); + if (version < 5) + warn (_("Version 4 does not support case insensitive lookups.\n")); + if (version < 6) + warn (_("Version 5 does not include inlined functions.\n")); + if (version < 7) + warn (_("Version 6 does not include symbol attributes.\n")); + /* Version 7 indices generated by Gold have bad type unit references, + PR binutils/15021. But we don't know if the index was generated by + Gold or not, so to avoid worrying users with gdb-generated indices + we say nothing for version 7 here. */ + + cu_list_offset = byte_get_little_endian (start + 4, 4); + tu_list_offset = byte_get_little_endian (start + 8, 4); + address_table_offset = byte_get_little_endian (start + 12, 4); + symbol_table_offset = byte_get_little_endian (start + 16, 4); + constant_pool_offset = byte_get_little_endian (start + 20, 4); + + if (cu_list_offset > section->size + || tu_list_offset > section->size + || address_table_offset > section->size + || symbol_table_offset > section->size + || constant_pool_offset > section->size) + { + warn (_("Corrupt header in the %s section.\n"), section->name); + return 0; + } + + /* PR 17531: file: 418d0a8a. */ + if (tu_list_offset < cu_list_offset) + { + warn (_("TU offset (%x) is less than CU offset (%x)\n"), + tu_list_offset, cu_list_offset); + return 0; + } + + cu_list_elements = (tu_list_offset - cu_list_offset) / 8; + + if (address_table_offset < tu_list_offset) + { + warn (_("Address table offset (%x) is less than TU offset (%x)\n"), + address_table_offset, tu_list_offset); + return 0; + } + + tu_list_elements = (address_table_offset - tu_list_offset) / 8; + + /* PR 17531: file: 18a47d3d. */ + if (symbol_table_offset < address_table_offset) + { + warn (_("Symbol table offset (%x) is less then Address table offset (%x)\n"), + symbol_table_offset, address_table_offset); + return 0; + } + + address_table_size = symbol_table_offset - address_table_offset; + + if (constant_pool_offset < symbol_table_offset) + { + warn (_("Constant pool offset (%x) is less than symbol table offset (%x)\n"), + constant_pool_offset, symbol_table_offset); + return 0; + } + + symbol_table_slots = (constant_pool_offset - symbol_table_offset) / 8; + + cu_list = start + cu_list_offset; + tu_list = start + tu_list_offset; + address_table = start + address_table_offset; + symbol_table = start + symbol_table_offset; + constant_pool = start + constant_pool_offset; + + if (address_table + address_table_size > section->start + section->size) + { + warn (_("Address table extends beyond end of section.\n")); + return 0; + } + + printf (_("\nCU table:\n")); + for (i = 0; i < cu_list_elements; i += 2) + { + uint64_t cu_offset = byte_get_little_endian (cu_list + i * 8, 8); + uint64_t cu_length = byte_get_little_endian (cu_list + i * 8 + 8, 8); + + printf (_("[%3u] 0x%lx - 0x%lx\n"), i / 2, + (unsigned long) cu_offset, + (unsigned long) (cu_offset + cu_length - 1)); + } + + printf (_("\nTU table:\n")); + for (i = 0; i < tu_list_elements; i += 3) + { + uint64_t tu_offset = byte_get_little_endian (tu_list + i * 8, 8); + uint64_t type_offset = byte_get_little_endian (tu_list + i * 8 + 8, 8); + uint64_t signature = byte_get_little_endian (tu_list + i * 8 + 16, 8); + + printf (_("[%3u] 0x%lx 0x%lx "), i / 3, + (unsigned long) tu_offset, + (unsigned long) type_offset); + print_dwarf_vma (signature, 8); + printf ("\n"); + } + + printf (_("\nAddress table:\n")); + for (i = 0; i < address_table_size && i <= address_table_size - (2 * 8 + 4); + i += 2 * 8 + 4) + { + uint64_t low = byte_get_little_endian (address_table + i, 8); + uint64_t high = byte_get_little_endian (address_table + i + 8, 8); + uint32_t cu_index = byte_get_little_endian (address_table + i + 16, 4); + + print_dwarf_vma (low, 8); + print_dwarf_vma (high, 8); + printf (_("%lu\n"), (unsigned long) cu_index); + } - /* Warning: if you add any more cases to this switch, be - sure to add them to the corresponding switch above. */ - switch (op) + printf (_("\nSymbol table:\n")); + for (i = 0; i < symbol_table_slots; ++i) + { + uint32_t name_offset = byte_get_little_endian (symbol_table + i * 8, 4); + uint32_t cu_vector_offset = byte_get_little_endian (symbol_table + i * 8 + 4, 4); + uint32_t num_cus, cu; + + if (name_offset != 0 + || cu_vector_offset != 0) + { + unsigned int j; + unsigned char * adr; + + adr = constant_pool + name_offset; + /* PR 17531: file: 5b7b07ad. */ + if (adr < constant_pool || adr >= section->start + section->size) { - case DW_CFA_advance_loc: - if (do_debug_frames_interp) - frame_display_row (fc, &need_col_headers, &max_regs); - else - printf (" DW_CFA_advance_loc: %d to %08lx\n", - opa * fc->code_factor, - fc->pc_begin + opa * fc->code_factor); - fc->pc_begin += opa * fc->code_factor; - break; + printf (_("[%3u] "), i, name_offset); + warn (_("Corrupt name offset of 0x%x found for symbol table slot %d\n"), + name_offset, i); + } + else + printf ("[%3u] %.*s:", i, + (int) (section->size - (constant_pool_offset + name_offset)), + constant_pool + name_offset); - case DW_CFA_offset: - roffs = LEB (); - if (opa >= (unsigned int) fc->ncols) - reg_prefix = bad_reg; - if (! do_debug_frames_interp || *reg_prefix != '\0') - printf (" DW_CFA_offset: %s%s at cfa%+ld\n", - reg_prefix, regname (opa, 0), - roffs * fc->data_factor); - if (*reg_prefix == '\0') - { - fc->col_type[opa] = DW_CFA_offset; - fc->col_offset[opa] = roffs * fc->data_factor; - } - break; + adr = constant_pool + cu_vector_offset; + if (adr < constant_pool || adr >= section->start + section->size - 3) + { + printf (_("\n"), cu_vector_offset); + warn (_("Corrupt CU vector offset of 0x%x found for symbol table slot %d\n"), + cu_vector_offset, i); + continue; + } - case DW_CFA_restore: - if (opa >= (unsigned int) cie->ncols - || opa >= (unsigned int) fc->ncols) - reg_prefix = bad_reg; - if (! do_debug_frames_interp || *reg_prefix != '\0') - printf (" DW_CFA_restore: %s%s\n", - reg_prefix, regname (opa, 0)); - if (*reg_prefix == '\0') - { - fc->col_type[opa] = cie->col_type[opa]; - fc->col_offset[opa] = cie->col_offset[opa]; - } - break; + num_cus = byte_get_little_endian (adr, 4); - case DW_CFA_set_loc: - vma = get_encoded_value (start, fc->fde_encoding, section); - start += encoded_ptr_size; - if (do_debug_frames_interp) - frame_display_row (fc, &need_col_headers, &max_regs); - else - printf (" DW_CFA_set_loc: %08lx\n", (unsigned long)vma); - fc->pc_begin = vma; - break; + adr = constant_pool + cu_vector_offset + 4 + num_cus * 4; + if (num_cus * 4 < num_cus + || adr >= section->start + section->size + || adr < constant_pool) + { + printf ("\n", num_cus); + warn (_("Invalid number of CUs (0x%x) for symbol table slot %d\n"), + num_cus, i); + continue; + } - case DW_CFA_advance_loc1: - ofs = byte_get (start, 1); start += 1; - if (do_debug_frames_interp) - frame_display_row (fc, &need_col_headers, &max_regs); - else - printf (" DW_CFA_advance_loc1: %ld to %08lx\n", - ofs * fc->code_factor, - fc->pc_begin + ofs * fc->code_factor); - fc->pc_begin += ofs * fc->code_factor; - break; + if (num_cus > 1) + printf ("\n"); - case DW_CFA_advance_loc2: - ofs = byte_get (start, 2); start += 2; - if (do_debug_frames_interp) - frame_display_row (fc, &need_col_headers, &max_regs); - else - printf (" DW_CFA_advance_loc2: %ld to %08lx\n", - ofs * fc->code_factor, - fc->pc_begin + ofs * fc->code_factor); - fc->pc_begin += ofs * fc->code_factor; - break; + for (j = 0; j < num_cus; ++j) + { + int is_static; + gdb_index_symbol_kind kind; - case DW_CFA_advance_loc4: - ofs = byte_get (start, 4); start += 4; - if (do_debug_frames_interp) - frame_display_row (fc, &need_col_headers, &max_regs); + cu = byte_get_little_endian (constant_pool + cu_vector_offset + 4 + j * 4, 4); + is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu); + kind = GDB_INDEX_SYMBOL_KIND_VALUE (cu); + cu = GDB_INDEX_CU_VALUE (cu); + /* Convert to TU number if it's for a type unit. */ + if (cu >= cu_list_elements / 2) + printf ("%cT%lu", num_cus > 1 ? '\t' : ' ', + (unsigned long) (cu - cu_list_elements / 2)); else - printf (" DW_CFA_advance_loc4: %ld to %08lx\n", - ofs * fc->code_factor, - fc->pc_begin + ofs * fc->code_factor); - fc->pc_begin += ofs * fc->code_factor; - break; + printf ("%c%lu", num_cus > 1 ? '\t' : ' ', (unsigned long) cu); - case DW_CFA_offset_extended: - reg = LEB (); - roffs = LEB (); - if (reg >= (unsigned int) fc->ncols) - reg_prefix = bad_reg; - if (! do_debug_frames_interp || *reg_prefix != '\0') - printf (" DW_CFA_offset_extended: %s%s at cfa%+ld\n", - reg_prefix, regname (reg, 0), - roffs * fc->data_factor); - if (*reg_prefix == '\0') - { - fc->col_type[reg] = DW_CFA_offset; - fc->col_offset[reg] = roffs * fc->data_factor; - } - break; + printf (" [%s, %s]", + is_static ? _("static") : _("global"), + get_gdb_index_symbol_kind_name (kind)); + if (num_cus > 1) + printf ("\n"); + } + if (num_cus <= 1) + printf ("\n"); + } + } - case DW_CFA_val_offset: - reg = LEB (); - roffs = LEB (); - if (reg >= (unsigned int) fc->ncols) - reg_prefix = bad_reg; - if (! do_debug_frames_interp || *reg_prefix != '\0') - printf (" DW_CFA_val_offset: %s%s at cfa%+ld\n", - reg_prefix, regname (reg, 0), - roffs * fc->data_factor); - if (*reg_prefix == '\0') - { - fc->col_type[reg] = DW_CFA_val_offset; - fc->col_offset[reg] = roffs * fc->data_factor; - } - break; + return 1; +} - case DW_CFA_restore_extended: - reg = LEB (); - if (reg >= (unsigned int) cie->ncols - || reg >= (unsigned int) fc->ncols) - reg_prefix = bad_reg; - if (! do_debug_frames_interp || *reg_prefix != '\0') - printf (" DW_CFA_restore_extended: %s%s\n", - reg_prefix, regname (reg, 0)); - if (*reg_prefix == '\0') - { - fc->col_type[reg] = cie->col_type[reg]; - fc->col_offset[reg] = cie->col_offset[reg]; - } - break; +/* Pre-allocate enough space for the CU/TU sets needed. */ - case DW_CFA_undefined: - reg = LEB (); - if (reg >= (unsigned int) fc->ncols) - reg_prefix = bad_reg; - if (! do_debug_frames_interp || *reg_prefix != '\0') - printf (" DW_CFA_undefined: %s%s\n", - reg_prefix, regname (reg, 0)); - if (*reg_prefix == '\0') - { - fc->col_type[reg] = DW_CFA_undefined; - fc->col_offset[reg] = 0; - } - break; +static void +prealloc_cu_tu_list (unsigned int nshndx) +{ + if (shndx_pool == NULL) + { + shndx_pool_size = nshndx; + shndx_pool_used = 0; + shndx_pool = (unsigned int *) xcmalloc (shndx_pool_size, + sizeof (unsigned int)); + } + else + { + shndx_pool_size = shndx_pool_used + nshndx; + shndx_pool = (unsigned int *) xcrealloc (shndx_pool, shndx_pool_size, + sizeof (unsigned int)); + } +} - case DW_CFA_same_value: - reg = LEB (); - if (reg >= (unsigned int) fc->ncols) - reg_prefix = bad_reg; - if (! do_debug_frames_interp || *reg_prefix != '\0') - printf (" DW_CFA_same_value: %s%s\n", - reg_prefix, regname (reg, 0)); - if (*reg_prefix == '\0') - { - fc->col_type[reg] = DW_CFA_same_value; - fc->col_offset[reg] = 0; - } - break; +static void +add_shndx_to_cu_tu_entry (unsigned int shndx) +{ + if (shndx_pool_used >= shndx_pool_size) + { + error (_("Internal error: out of space in the shndx pool.\n")); + return; + } + shndx_pool [shndx_pool_used++] = shndx; +} - case DW_CFA_register: - reg = LEB (); - roffs = LEB (); - if (reg >= (unsigned int) fc->ncols) - reg_prefix = bad_reg; - if (! do_debug_frames_interp || *reg_prefix != '\0') - { - printf (" DW_CFA_register: %s%s in ", - reg_prefix, regname (reg, 0)); - puts (regname (roffs, 0)); - } - if (*reg_prefix == '\0') +static void +end_cu_tu_entry (void) +{ + if (shndx_pool_used >= shndx_pool_size) + { + error (_("Internal error: out of space in the shndx pool.\n")); + return; + } + shndx_pool [shndx_pool_used++] = 0; +} + +/* Return the short name of a DWARF section given by a DW_SECT enumerator. */ + +static const char * +get_DW_SECT_short_name (unsigned int dw_sect) +{ + static char buf[16]; + + switch (dw_sect) + { + case DW_SECT_INFO: + return "info"; + case DW_SECT_TYPES: + return "types"; + case DW_SECT_ABBREV: + return "abbrev"; + case DW_SECT_LINE: + return "line"; + case DW_SECT_LOC: + return "loc"; + case DW_SECT_STR_OFFSETS: + return "str_off"; + case DW_SECT_MACINFO: + return "macinfo"; + case DW_SECT_MACRO: + return "macro"; + default: + break; + } + + snprintf (buf, sizeof (buf), "%d", dw_sect); + return buf; +} + +/* Process a CU or TU index. If DO_DISPLAY is true, print the contents. + These sections are extensions for Fission. + See http://gcc.gnu.org/wiki/DebugFissionDWP. */ + +static int +process_cu_tu_index (struct dwarf_section *section, int do_display) +{ + unsigned char *phdr = section->start; + unsigned char *limit = phdr + section->size; + unsigned char *phash; + unsigned char *pindex; + unsigned char *ppool; + unsigned int version; + unsigned int ncols = 0; + unsigned int nused; + unsigned int nslots; + unsigned int i; + unsigned int j; + dwarf_vma signature_high; + dwarf_vma signature_low; + char buf[64]; + + /* PR 17512: file: 002-168123-0.004. */ + if (phdr == NULL) + { + warn (_("Section %s is empty\n"), section->name); + return 0; + } + /* PR 17512: file: 002-376-0.004. */ + if (section->size < 24) + { + warn (_("Section %s is too small to contain a CU/TU header\n"), + section->name); + return 0; + } + + SAFE_BYTE_GET (version, phdr, 4, limit); + if (version >= 2) + SAFE_BYTE_GET (ncols, phdr + 4, 4, limit); + SAFE_BYTE_GET (nused, phdr + 8, 4, limit); + SAFE_BYTE_GET (nslots, phdr + 12, 4, limit); + + phash = phdr + 16; + pindex = phash + nslots * 8; + ppool = pindex + nslots * 4; + + /* PR 17531: file: 45d69832. */ + if (pindex < phash || ppool < phdr || (pindex == phash && nslots != 0)) + { + warn (ngettext ("Section %s is too small for %d slot\n", + "Section %s is too small for %d slots\n", + nslots), + section->name, nslots); + return 0; + } + + if (do_display) + { + introduce (section, FALSE); + + printf (_(" Version: %d\n"), version); + if (version >= 2) + printf (_(" Number of columns: %d\n"), ncols); + printf (_(" Number of used entries: %d\n"), nused); + printf (_(" Number of slots: %d\n\n"), nslots); + } + + if (ppool > limit || ppool < phdr) + { + warn (_("Section %s too small for %d hash table entries\n"), + section->name, nslots); + return 0; + } + + if (version == 1) + { + if (!do_display) + prealloc_cu_tu_list ((limit - ppool) / 4); + for (i = 0; i < nslots; i++) + { + unsigned char *shndx_list; + unsigned int shndx; + + SAFE_BYTE_GET64 (phash, &signature_high, &signature_low, limit); + if (signature_high != 0 || signature_low != 0) + { + SAFE_BYTE_GET (j, pindex, 4, limit); + shndx_list = ppool + j * 4; + /* PR 17531: file: 705e010d. */ + if (shndx_list < ppool) { - fc->col_type[reg] = DW_CFA_register; - fc->col_offset[reg] = roffs; + warn (_("Section index pool located before start of section\n")); + return 0; } - break; - - case DW_CFA_remember_state: - if (! do_debug_frames_interp) - printf (" DW_CFA_remember_state\n"); - rs = (Frame_Chunk *) xmalloc (sizeof (Frame_Chunk)); - rs->ncols = fc->ncols; - rs->col_type = (short int *) xcmalloc (rs->ncols, - sizeof (short int)); - rs->col_offset = (int *) xcmalloc (rs->ncols, sizeof (int)); - memcpy (rs->col_type, fc->col_type, rs->ncols); - memcpy (rs->col_offset, fc->col_offset, rs->ncols * sizeof (int)); - rs->next = remembered_state; - remembered_state = rs; - break; - case DW_CFA_restore_state: - if (! do_debug_frames_interp) - printf (" DW_CFA_restore_state\n"); - rs = remembered_state; - if (rs) + if (do_display) + printf (_(" [%3d] Signature: 0x%s Sections: "), + i, dwarf_vmatoa64 (signature_high, signature_low, + buf, sizeof (buf))); + for (;;) { - remembered_state = rs->next; - frame_need_space (fc, rs->ncols - 1); - memcpy (fc->col_type, rs->col_type, rs->ncols); - memcpy (fc->col_offset, rs->col_offset, - rs->ncols * sizeof (int)); - free (rs->col_type); - free (rs->col_offset); - free (rs); + if (shndx_list >= limit) + { + warn (_("Section %s too small for shndx pool\n"), + section->name); + return 0; + } + SAFE_BYTE_GET (shndx, shndx_list, 4, limit); + if (shndx == 0) + break; + if (do_display) + printf (" %d", shndx); + else + add_shndx_to_cu_tu_entry (shndx); + shndx_list += 4; } - else if (do_debug_frames_interp) - printf ("Mismatched DW_CFA_restore_state\n"); - break; + if (do_display) + printf ("\n"); + else + end_cu_tu_entry (); + } + phash += 8; + pindex += 4; + } + } + else if (version == 2) + { + unsigned int val; + unsigned int dw_sect; + unsigned char *ph = phash; + unsigned char *pi = pindex; + unsigned char *poffsets = ppool + ncols * 4; + unsigned char *psizes = poffsets + nused * ncols * 4; + unsigned char *pend = psizes + nused * ncols * 4; + bfd_boolean is_tu_index; + struct cu_tu_set *this_set = NULL; + unsigned int row; + unsigned char *prow; + + is_tu_index = strcmp (section->name, ".debug_tu_index") == 0; + + /* PR 17531: file: 0dd159bf. + Check for wraparound with an overlarge ncols value. */ + if (poffsets < ppool || (unsigned int) ((poffsets - ppool) / 4) != ncols) + { + warn (_("Overlarge number of columns: %x\n"), ncols); + return 0; + } - case DW_CFA_def_cfa: - fc->cfa_reg = LEB (); - fc->cfa_offset = LEB (); - fc->cfa_exp = 0; - if (! do_debug_frames_interp) - printf (" DW_CFA_def_cfa: %s ofs %d\n", - regname (fc->cfa_reg, 0), fc->cfa_offset); - break; + if (pend > limit) + { + warn (_("Section %s too small for offset and size tables\n"), + section->name); + return 0; + } - case DW_CFA_def_cfa_register: - fc->cfa_reg = LEB (); - fc->cfa_exp = 0; - if (! do_debug_frames_interp) - printf (" DW_CFA_def_cfa_register: %s\n", - regname (fc->cfa_reg, 0)); - break; + if (do_display) + { + printf (_(" Offset table\n")); + printf (" slot %-16s ", + is_tu_index ? _("signature") : _("dwo_id")); + } + else + { + if (is_tu_index) + { + tu_count = nused; + tu_sets = xcalloc2 (nused, sizeof (struct cu_tu_set)); + this_set = tu_sets; + } + else + { + cu_count = nused; + cu_sets = xcalloc2 (nused, sizeof (struct cu_tu_set)); + this_set = cu_sets; + } + } - case DW_CFA_def_cfa_offset: - fc->cfa_offset = LEB (); - if (! do_debug_frames_interp) - printf (" DW_CFA_def_cfa_offset: %d\n", fc->cfa_offset); - break; + if (do_display) + { + for (j = 0; j < ncols; j++) + { + SAFE_BYTE_GET (dw_sect, ppool + j * 4, 4, limit); + printf (" %8s", get_DW_SECT_short_name (dw_sect)); + } + printf ("\n"); + } - case DW_CFA_nop: - if (! do_debug_frames_interp) - printf (" DW_CFA_nop\n"); - break; + for (i = 0; i < nslots; i++) + { + SAFE_BYTE_GET64 (ph, &signature_high, &signature_low, limit); - case DW_CFA_def_cfa_expression: - ul = LEB (); - if (! do_debug_frames_interp) + SAFE_BYTE_GET (row, pi, 4, limit); + if (row != 0) + { + /* PR 17531: file: a05f6ab3. */ + if (row > nused) { - printf (" DW_CFA_def_cfa_expression ("); - decode_location_expression (start, eh_addr_size, 0, -1, - ul, 0, section); - printf (")\n"); + warn (_("Row index (%u) is larger than number of used entries (%u)\n"), + row, nused); + return 0; } - fc->cfa_exp = 1; - start += ul; - break; - case DW_CFA_expression: - reg = LEB (); - ul = LEB (); - if (reg >= (unsigned int) fc->ncols) - reg_prefix = bad_reg; - if (! do_debug_frames_interp || *reg_prefix != '\0') + if (!do_display) { - printf (" DW_CFA_expression: %s%s (", - reg_prefix, regname (reg, 0)); - decode_location_expression (start, eh_addr_size, 0, -1, - ul, 0, section); - printf (")\n"); + size_t num_copy = sizeof (uint64_t); + + /* PR 23064: Beware of buffer overflow. */ + if (ph + num_copy < limit) + memcpy (&this_set[row - 1].signature, ph, num_copy); + else + { + warn (_("Signature (%p) extends beyond end of space in section\n"), ph); + return 0; + } } - if (*reg_prefix == '\0') - fc->col_type[reg] = DW_CFA_expression; - start += ul; - break; - case DW_CFA_val_expression: - reg = LEB (); - ul = LEB (); - if (reg >= (unsigned int) fc->ncols) - reg_prefix = bad_reg; - if (! do_debug_frames_interp || *reg_prefix != '\0') + prow = poffsets + (row - 1) * ncols * 4; + /* PR 17531: file: b8ce60a8. */ + if (prow < poffsets || prow > limit) { - printf (" DW_CFA_val_expression: %s%s (", - reg_prefix, regname (reg, 0)); - decode_location_expression (start, eh_addr_size, 0, -1, - ul, 0, section); - printf (")\n"); + warn (_("Row index (%u) * num columns (%u) > space remaining in section\n"), + row, ncols); + return 0; } - if (*reg_prefix == '\0') - fc->col_type[reg] = DW_CFA_val_expression; - start += ul; - break; - case DW_CFA_offset_extended_sf: - reg = LEB (); - l = SLEB (); - if (frame_need_space (fc, reg) < 0) - reg_prefix = bad_reg; - if (! do_debug_frames_interp || *reg_prefix != '\0') - printf (" DW_CFA_offset_extended_sf: %s%s at cfa%+ld\n", - reg_prefix, regname (reg, 0), - l * fc->data_factor); - if (*reg_prefix == '\0') + if (do_display) + printf (_(" [%3d] 0x%s"), + i, dwarf_vmatoa64 (signature_high, signature_low, + buf, sizeof (buf))); + for (j = 0; j < ncols; j++) { - fc->col_type[reg] = DW_CFA_offset; - fc->col_offset[reg] = l * fc->data_factor; + SAFE_BYTE_GET (val, prow + j * 4, 4, limit); + if (do_display) + printf (" %8d", val); + else + { + SAFE_BYTE_GET (dw_sect, ppool + j * 4, 4, limit); + + /* PR 17531: file: 10796eb3. */ + if (dw_sect >= DW_SECT_MAX) + warn (_("Overlarge Dwarf section index detected: %u\n"), dw_sect); + else + this_set [row - 1].section_offsets [dw_sect] = val; + } } - break; - case DW_CFA_val_offset_sf: - reg = LEB (); - l = SLEB (); - if (frame_need_space (fc, reg) < 0) - reg_prefix = bad_reg; - if (! do_debug_frames_interp || *reg_prefix != '\0') - printf (" DW_CFA_val_offset_sf: %s%s at cfa%+ld\n", - reg_prefix, regname (reg, 0), - l * fc->data_factor); - if (*reg_prefix == '\0') + if (do_display) + printf ("\n"); + } + ph += 8; + pi += 4; + } + + ph = phash; + pi = pindex; + if (do_display) + { + printf ("\n"); + printf (_(" Size table\n")); + printf (" slot %-16s ", + is_tu_index ? _("signature") : _("dwo_id")); + } + + for (j = 0; j < ncols; j++) + { + SAFE_BYTE_GET (val, ppool + j * 4, 4, limit); + if (do_display) + printf (" %8s", get_DW_SECT_short_name (val)); + } + + if (do_display) + printf ("\n"); + + for (i = 0; i < nslots; i++) + { + SAFE_BYTE_GET64 (ph, &signature_high, &signature_low, limit); + + SAFE_BYTE_GET (row, pi, 4, limit); + if (row != 0) + { + prow = psizes + (row - 1) * ncols * 4; + + if (do_display) + printf (_(" [%3d] 0x%s"), + i, dwarf_vmatoa64 (signature_high, signature_low, + buf, sizeof (buf))); + + for (j = 0; j < ncols; j++) { - fc->col_type[reg] = DW_CFA_val_offset; - fc->col_offset[reg] = l * fc->data_factor; + SAFE_BYTE_GET (val, prow + j * 4, 4, limit); + if (do_display) + printf (" %8d", val); + else + { + SAFE_BYTE_GET (dw_sect, ppool + j * 4, 4, limit); + if (dw_sect >= DW_SECT_MAX) + warn (_("Overlarge Dwarf section index detected: %u\n"), dw_sect); + else + this_set [row - 1].section_sizes [dw_sect] = val; + } } - break; - case DW_CFA_def_cfa_sf: - fc->cfa_reg = LEB (); - fc->cfa_offset = SLEB (); - fc->cfa_offset = fc->cfa_offset * fc->data_factor; - fc->cfa_exp = 0; - if (! do_debug_frames_interp) - printf (" DW_CFA_def_cfa_sf: %s ofs %d\n", - regname (fc->cfa_reg, 0), fc->cfa_offset); - break; + if (do_display) + printf ("\n"); + } - case DW_CFA_def_cfa_offset_sf: - fc->cfa_offset = SLEB (); - fc->cfa_offset = fc->cfa_offset * fc->data_factor; - if (! do_debug_frames_interp) - printf (" DW_CFA_def_cfa_offset_sf: %d\n", fc->cfa_offset); - break; + ph += 8; + pi += 4; + } + } + else if (do_display) + printf (_(" Unsupported version (%d)\n"), version); - case DW_CFA_MIPS_advance_loc8: - ofs = byte_get (start, 8); start += 8; - if (do_debug_frames_interp) - frame_display_row (fc, &need_col_headers, &max_regs); - else - printf (" DW_CFA_MIPS_advance_loc8: %ld to %08lx\n", - ofs * fc->code_factor, - fc->pc_begin + ofs * fc->code_factor); - fc->pc_begin += ofs * fc->code_factor; - break; + if (do_display) + printf ("\n"); - case DW_CFA_GNU_window_save: - if (! do_debug_frames_interp) - printf (" DW_CFA_GNU_window_save\n"); - break; + return 1; +} + +/* Load the CU and TU indexes if present. This will build a list of + section sets that we can use to associate a .debug_info.dwo section + with its associated .debug_abbrev.dwo section in a .dwp file. */ + +static bfd_boolean +load_cu_tu_indexes (void *file) +{ + static int cu_tu_indexes_read = -1; /* Tri-state variable. */ + + /* If we have already loaded (or tried to load) the CU and TU indexes + then do not bother to repeat the task. */ + if (cu_tu_indexes_read == -1) + { + cu_tu_indexes_read = TRUE; + + if (load_debug_section_with_follow (dwp_cu_index, file)) + if (! process_cu_tu_index (&debug_displays [dwp_cu_index].section, 0)) + cu_tu_indexes_read = FALSE; + + if (load_debug_section_with_follow (dwp_tu_index, file)) + if (! process_cu_tu_index (&debug_displays [dwp_tu_index].section, 0)) + cu_tu_indexes_read = FALSE; + } + + return (bfd_boolean) cu_tu_indexes_read; +} + +/* Find the set of sections that includes section SHNDX. */ + +unsigned int * +find_cu_tu_set (void *file, unsigned int shndx) +{ + unsigned int i; + + if (! load_cu_tu_indexes (file)) + return NULL; + + /* Find SHNDX in the shndx pool. */ + for (i = 0; i < shndx_pool_used; i++) + if (shndx_pool [i] == shndx) + break; + + if (i >= shndx_pool_used) + return NULL; + + /* Now backup to find the first entry in the set. */ + while (i > 0 && shndx_pool [i - 1] != 0) + i--; + + return shndx_pool + i; +} + +/* Display a .debug_cu_index or .debug_tu_index section. */ + +static int +display_cu_index (struct dwarf_section *section, void *file ATTRIBUTE_UNUSED) +{ + return process_cu_tu_index (section, 1); +} + +static int +display_debug_not_supported (struct dwarf_section *section, + void *file ATTRIBUTE_UNUSED) +{ + printf (_("Displaying the debug contents of section %s is not yet supported.\n"), + section->name); + + return 1; +} + +/* Like malloc, but takes two parameters like calloc. + Verifies that the first parameter is not too large. + Note: does *not* initialise the allocated memory to zero. */ + +void * +cmalloc (size_t nmemb, size_t size) +{ + /* Check for overflow. */ + if (nmemb >= ~(size_t) 0 / size) + return NULL; + + return xmalloc (nmemb * size); +} + +/* Like xmalloc, but takes two parameters like calloc. + Verifies that the first parameter is not too large. + Note: does *not* initialise the allocated memory to zero. */ + +void * +xcmalloc (size_t nmemb, size_t size) +{ + /* Check for overflow. */ + if (nmemb >= ~(size_t) 0 / size) + { + fprintf (stderr, + _("Attempt to allocate an array with an excessive number of elements: 0x%lx\n"), + (long) nmemb); + xexit (1); + } + + return xmalloc (nmemb * size); +} + +/* Like xrealloc, but takes three parameters. + Verifies that the second parameter is not too large. + Note: does *not* initialise any new memory to zero. */ + +void * +xcrealloc (void *ptr, size_t nmemb, size_t size) +{ + /* Check for overflow. */ + if (nmemb >= ~(size_t) 0 / size) + { + error (_("Attempt to re-allocate an array with an excessive number of elements: 0x%lx\n"), + (long) nmemb); + xexit (1); + } + + return xrealloc (ptr, nmemb * size); +} + +/* Like xcalloc, but verifies that the first parameter is not too large. */ + +void * +xcalloc2 (size_t nmemb, size_t size) +{ + /* Check for overflow. */ + if (nmemb >= ~(size_t) 0 / size) + { + error (_("Attempt to allocate a zero'ed array with an excessive number of elements: 0x%lx\n"), + (long) nmemb); + xexit (1); + } + + return xcalloc (nmemb, size); +} + +static unsigned long +calc_gnu_debuglink_crc32 (unsigned long crc, + const unsigned char * buf, + bfd_size_type len) +{ + static const unsigned long crc32_table[256] = + { + 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, + 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, + 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, + 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, + 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, + 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, + 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, + 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, + 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, + 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, + 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, + 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, + 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, + 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, + 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, + 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, + 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, + 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, + 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, + 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, + 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, + 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, + 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, + 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, + 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, + 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, + 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, + 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, + 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, + 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, + 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, + 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, + 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, + 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, + 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, + 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, + 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, + 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, + 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, + 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, + 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, + 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, + 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, + 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, + 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, + 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, + 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, + 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, + 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, + 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, + 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, + 0x2d02ef8d + }; + const unsigned char *end; + + crc = ~crc & 0xffffffff; + for (end = buf + len; buf < end; ++ buf) + crc = crc32_table[(crc ^ *buf) & 0xff] ^ (crc >> 8); + return ~crc & 0xffffffff; +} + +typedef bfd_boolean (* check_func_type) (const char *, void *); +typedef const char * (* parse_func_type) (struct dwarf_section *, void *); + +static bfd_boolean +check_gnu_debuglink (const char * pathname, void * crc_pointer) +{ + static unsigned char buffer [8 * 1024]; + FILE * f; + bfd_size_type count; + unsigned long crc = 0; + void * sep_data; + + sep_data = open_debug_file (pathname); + if (sep_data == NULL) + return FALSE; + + /* Yes - we are opening the file twice... */ + f = fopen (pathname, "rb"); + if (f == NULL) + { + /* Paranoia: This should never happen. */ + close_debug_file (sep_data); + warn (_("Unable to reopen separate debug info file: %s\n"), pathname); + return FALSE; + } + + while ((count = fread (buffer, 1, sizeof (buffer), f)) > 0) + crc = calc_gnu_debuglink_crc32 (crc, buffer, count); + + fclose (f); + + if (crc != * (unsigned long *) crc_pointer) + { + close_debug_file (sep_data); + warn (_("Separate debug info file %s found, but CRC does not match - ignoring\n"), + pathname); + return FALSE; + } + + return TRUE; +} - case DW_CFA_GNU_args_size: - ul = LEB (); - if (! do_debug_frames_interp) - printf (" DW_CFA_GNU_args_size: %ld\n", ul); - break; +static const char * +parse_gnu_debuglink (struct dwarf_section * section, void * data) +{ + const char * name; + unsigned int crc_offset; + unsigned long * crc32 = (unsigned long *) data; - case DW_CFA_GNU_negative_offset_extended: - reg = LEB (); - l = - LEB (); - if (frame_need_space (fc, reg) < 0) - reg_prefix = bad_reg; - if (! do_debug_frames_interp || *reg_prefix != '\0') - printf (" DW_CFA_GNU_negative_offset_extended: %s%s at cfa%+ld\n", - reg_prefix, regname (reg, 0), - l * fc->data_factor); - if (*reg_prefix == '\0') - { - fc->col_type[reg] = DW_CFA_offset; - fc->col_offset[reg] = l * fc->data_factor; - } - break; + /* The name is first. + The CRC value is stored after the filename, aligned up to 4 bytes. */ + name = (const char *) section->start; - default: - if (op >= DW_CFA_lo_user && op <= DW_CFA_hi_user) - printf (_(" DW_CFA_??? (User defined call frame op: %#x)\n"), op); - else - warn (_("unsupported or unknown Dwarf Call Frame Instruction number: %#x\n"), op); - start = block_end; - } - } + crc_offset = strnlen (name, section->size) + 1; + crc_offset = (crc_offset + 3) & ~3; + if (crc_offset + 4 > section->size) + return NULL; - if (do_debug_frames_interp) - frame_display_row (fc, &need_col_headers, &max_regs); + * crc32 = byte_get (section->start + crc_offset, 4); + return name; +} - start = block_end; - eh_addr_size = saved_eh_addr_size; - } +static bfd_boolean +check_gnu_debugaltlink (const char * filename, void * data ATTRIBUTE_UNUSED) +{ + void * sep_data = open_debug_file (filename); - printf ("\n"); + if (sep_data == NULL) + return FALSE; - return 1; + /* FIXME: We should now extract the build-id in the separate file + and check it... */ + + return TRUE; } -#undef GET -#undef LEB -#undef SLEB +typedef struct build_id_data +{ + bfd_size_type len; + const unsigned char * data; +} Build_id_data; -static int -display_gdb_index (struct dwarf_section *section, - void *file ATTRIBUTE_UNUSED) +static const char * +parse_gnu_debugaltlink (struct dwarf_section * section, void * data) { - unsigned char *start = section->start; - uint32_t version; - uint32_t cu_list_offset, tu_list_offset; - uint32_t address_table_offset, symbol_table_offset, constant_pool_offset; - unsigned int cu_list_elements, tu_list_elements; - unsigned int address_table_size, symbol_table_slots; - unsigned char *cu_list, *tu_list; - unsigned char *address_table, *symbol_table, *constant_pool; - unsigned int i; + const char * name; + bfd_size_type namelen; + bfd_size_type id_len; + Build_id_data * build_id_data; - /* The documentation for the format of this file is in gdb/dwarf2read.c. */ + /* The name is first. + The build-id follows immediately, with no padding, up to the section's end. */ + + name = (const char *) section->start; + namelen = strnlen (name, section->size) + 1; + if (namelen >= section->size) + return NULL; - printf (_("Contents of the %s section:\n"), section->name); + id_len = section->size - namelen; + if (id_len < 0x14) + return NULL; - if (section->size < 6 * sizeof (uint32_t)) + build_id_data = calloc (1, sizeof * build_id_data); + if (build_id_data == NULL) + return NULL; + + build_id_data->len = id_len; + build_id_data->data = section->start + namelen; + + * (Build_id_data **) data = build_id_data; + + return name; +} + +static void * +load_separate_debug_info (const char * main_filename, + struct dwarf_section * xlink, + parse_func_type parse_func, + check_func_type check_func, + void * func_data) +{ + const char * separate_filename; + char * debugfile; + char * canon_dir; + size_t canon_dirlen; + size_t dirlen; + + if ((separate_filename = parse_func (xlink, func_data)) == NULL) { - warn (_("Truncated header in the %s section.\n"), section->name); - return 0; + warn (_("Corrupt debuglink section: %s\n"), + xlink->name ? xlink->name : xlink->uncompressed_name); + return FALSE; } + + /* Attempt to locate the separate file. + This should duplicate the logic in bfd/opncls.c:find_separate_debug_file(). */ + + canon_dir = lrealpath (main_filename); + + for (canon_dirlen = strlen (canon_dir); canon_dirlen > 0; canon_dirlen--) + if (IS_DIR_SEPARATOR (canon_dir[canon_dirlen - 1])) + break; + canon_dir[canon_dirlen] = '\0'; - version = byte_get_little_endian (start, 4); - printf (_("Version %ld\n"), (long) version); +#ifndef DEBUGDIR +#define DEBUGDIR "/lib/debug" +#endif +#ifndef EXTRA_DEBUG_ROOT1 +#define EXTRA_DEBUG_ROOT1 "/usr/lib/debug" +#endif +#ifndef EXTRA_DEBUG_ROOT2 +#define EXTRA_DEBUG_ROOT2 "/usr/lib/debug/usr" +#endif - /* Prior versions are obsolete, and future versions may not be - backwards compatible. */ - switch (version) + debugfile = (char *) malloc (strlen (DEBUGDIR) + 1 + + canon_dirlen + + strlen (".debug/") +#ifdef EXTRA_DEBUG_ROOT1 + + strlen (EXTRA_DEBUG_ROOT1) +#endif +#ifdef EXTRA_DEBUG_ROOT2 + + strlen (EXTRA_DEBUG_ROOT2) +#endif + + strlen (separate_filename) + + 1); + if (debugfile == NULL) { - case 3: - warn (_("The address table data in version 3 may be wrong.\n")); - break; - case 4: - warn (_("Version 4 does not support case insensitive lookups.\n")); - break; - case 5: - break; - default: - warn (_("Unsupported version %lu.\n"), (unsigned long) version); - return 0; + warn (_("Out of memory")); + free (canon_dir); + return NULL; } - cu_list_offset = byte_get_little_endian (start + 4, 4); - tu_list_offset = byte_get_little_endian (start + 8, 4); - address_table_offset = byte_get_little_endian (start + 12, 4); - symbol_table_offset = byte_get_little_endian (start + 16, 4); - constant_pool_offset = byte_get_little_endian (start + 20, 4); + /* First try in the current directory. */ + sprintf (debugfile, "%s", separate_filename); + if (check_func (debugfile, func_data)) + goto found; + + /* Then try in a subdirectory called .debug. */ + sprintf (debugfile, ".debug/%s", separate_filename); + if (check_func (debugfile, func_data)) + goto found; + + /* Then try in the same directory as the original file. */ + sprintf (debugfile, "%s%s", canon_dir, separate_filename); + if (check_func (debugfile, func_data)) + goto found; + + /* And the .debug subdirectory of that directory. */ + sprintf (debugfile, "%s.debug/%s", canon_dir, separate_filename); + if (check_func (debugfile, func_data)) + goto found; + +#ifdef EXTRA_DEBUG_ROOT1 + /* Try the first extra debug file root. */ + sprintf (debugfile, "%s/%s", EXTRA_DEBUG_ROOT1, separate_filename); + if (check_func (debugfile, func_data)) + goto found; +#endif - if (cu_list_offset > section->size - || tu_list_offset > section->size - || address_table_offset > section->size - || symbol_table_offset > section->size - || constant_pool_offset > section->size) +#ifdef EXTRA_DEBUG_ROOT2 + /* Try the second extra debug file root. */ + sprintf (debugfile, "%s/%s", EXTRA_DEBUG_ROOT2, separate_filename); + if (check_func (debugfile, func_data)) + goto found; +#endif + + /* Then try in the global debugfile directory. */ + strcpy (debugfile, DEBUGDIR); + dirlen = strlen (DEBUGDIR) - 1; + if (dirlen > 0 && DEBUGDIR[dirlen] != '/') + strcat (debugfile, "/"); + strcat (debugfile, (const char *) separate_filename); + + if (check_func (debugfile, func_data)) + goto found; + + /* Failed to find the file. */ + warn (_("could not find separate debug file '%s'\n"), separate_filename); + warn (_("tried: %s\n"), debugfile); + +#ifdef EXTRA_DEBUG_ROOT2 + sprintf (debugfile, "%s/%s", EXTRA_DEBUG_ROOT2, separate_filename); + warn (_("tried: %s\n"), debugfile); +#endif + +#ifdef EXTRA_DEBUG_ROOT1 + sprintf (debugfile, "%s/%s", EXTRA_DEBUG_ROOT1, separate_filename); + warn (_("tried: %s\n"), debugfile); +#endif + + sprintf (debugfile, "%s.debug/%s", canon_dir, separate_filename); + warn (_("tried: %s\n"), debugfile); + + sprintf (debugfile, "%s%s", canon_dir, separate_filename); + warn (_("tried: %s\n"), debugfile); + + sprintf (debugfile, ".debug/%s", separate_filename); + warn (_("tried: %s\n"), debugfile); + + sprintf (debugfile, "%s", separate_filename); + warn (_("tried: %s\n"), debugfile); + + free (canon_dir); + free (debugfile); + return NULL; + + found: + free (canon_dir); + + /* Now open the file.... */ + if ((separate_debug_file = open_debug_file (debugfile)) == NULL) { - warn (_("Corrupt header in the %s section.\n"), section->name); - return 0; + warn (_("failed to open separate debug file: %s\n"), debugfile); + free (debugfile); + return FALSE; } - cu_list_elements = (tu_list_offset - cu_list_offset) / 8; - tu_list_elements = (address_table_offset - tu_list_offset) / 8; - address_table_size = symbol_table_offset - address_table_offset; - symbol_table_slots = (constant_pool_offset - symbol_table_offset) / 8; + /* FIXME: We do not check to see if there are any other separate debug info + files that would also match. */ - cu_list = start + cu_list_offset; - tu_list = start + tu_list_offset; - address_table = start + address_table_offset; - symbol_table = start + symbol_table_offset; - constant_pool = start + constant_pool_offset; + printf (_("%s: Found separate debug info file: %s\n\n"), main_filename, debugfile); + separate_debug_filename = debugfile; - printf (_("\nCU table:\n")); - for (i = 0; i < cu_list_elements; i += 2) - { - uint64_t cu_offset = byte_get_little_endian (cu_list + i * 8, 8); - uint64_t cu_length = byte_get_little_endian (cu_list + i * 8 + 8, 8); + /* Do not free debugfile - it might be referenced inside + the structure returned by open_debug_file(). */ + return separate_debug_file; +} - printf (_("[%3u] 0x%lx - 0x%lx\n"), i / 2, - (unsigned long) cu_offset, - (unsigned long) (cu_offset + cu_length - 1)); - } +/* Attempt to load a separate dwarf object file. */ - printf (_("\nTU table:\n")); - for (i = 0; i < tu_list_elements; i += 3) - { - uint64_t tu_offset = byte_get_little_endian (tu_list + i * 8, 8); - uint64_t type_offset = byte_get_little_endian (tu_list + i * 8 + 8, 8); - uint64_t signature = byte_get_little_endian (tu_list + i * 8 + 16, 8); +static void * +load_dwo_file (const char * main_filename) +{ + char * filename; - printf (_("[%3u] 0x%lx 0x%lx "), i / 3, - (unsigned long) tu_offset, - (unsigned long) type_offset); - print_dwarf_vma (signature, 8); - printf ("\n"); + /* FIXME: Skip adding / if dwo_dir ends in /. */ + filename = concat (dwo_dir, "/", dwo_name, NULL); + if (filename == NULL) + { + warn (_("Out of memory allocating dwo filename\n")); + return NULL; } - printf (_("\nAddress table:\n")); - for (i = 0; i < address_table_size; i += 2 * 8 + 4) + if ((separate_debug_file = open_debug_file (filename)) == NULL) { - uint64_t low = byte_get_little_endian (address_table + i, 8); - uint64_t high = byte_get_little_endian (address_table + i + 8, 8); - uint32_t cu_index = byte_get_little_endian (address_table + i + 16, 4); - - print_dwarf_vma (low, 8); - print_dwarf_vma (high, 8); - printf (_("%lu\n"), (unsigned long) cu_index); + warn (_("Unable to load dwo file: %s\n"), filename); + free (filename); + return NULL; } - printf (_("\nSymbol table:\n")); - for (i = 0; i < symbol_table_slots; ++i) + /* FIXME: We should check the dwo_id. */ + + printf (_("%s: Found separate debug object file: %s\n\n"), main_filename, filename); + separate_debug_filename = filename; + return separate_debug_file; +} + +/* Load a separate debug info file, if it exists. + Returns the data pointer that is the result of calling open_debug_file + on the separate debug info file, or NULL if there were problems or there + is no such file. */ + +void * +load_separate_debug_file (void * file, const char * filename) +{ + /* Skip this operation if we are not interested in debug links. */ + if (! do_follow_links && ! do_debug_links) + return NULL; + + /* See if there is a dwo link. */ + if (load_debug_section (str, file) + && load_debug_section (abbrev, file) + && load_debug_section (info, file)) { - uint32_t name_offset = byte_get_little_endian (symbol_table + i * 8, 4); - uint32_t cu_vector_offset = byte_get_little_endian (symbol_table + i * 8 + 4, 4); - uint32_t num_cus, cu; + dwo_name = dwo_dir = NULL; + dwo_id = NULL; + dwo_id_len = 0; - if (name_offset != 0 - || cu_vector_offset != 0) + if (process_debug_info (& debug_displays[info].section, file, abbrev, TRUE, FALSE)) { - unsigned int j; - - printf ("[%3u] %s:", i, constant_pool + name_offset); - num_cus = byte_get_little_endian (constant_pool + cu_vector_offset, 4); - for (j = 0; j < num_cus; ++j) + if (dwo_name != NULL) { - cu = byte_get_little_endian (constant_pool + cu_vector_offset + 4 + j * 4, 4); - /* Convert to TU number if it's for a type unit. */ - if (cu >= cu_list_elements) - printf (" T%lu", (unsigned long) (cu - cu_list_elements)); - else - printf (" %lu", (unsigned long) cu); + if (do_debug_links) + { + printf (_("The %s section contains a link to a dwo file:\n"), + debug_displays [info].section.uncompressed_name); + printf (_(" Name: %s\n"), dwo_name); + printf (_(" Directory: %s\n"), dwo_dir ? dwo_dir : _("")); + if (dwo_id != NULL) + display_data (printf (_(" ID: ")), dwo_id, dwo_id_len); + else + printf (_(" ID: \n")); + printf ("\n\n"); + } + + /* FIXME: We do not check to see if there are any more dwo links in the file... */ + if (do_follow_links) + return load_dwo_file (filename); } - printf ("\n"); } } - return 1; -} + if (! do_follow_links) + /* The other debug links will be displayed by display_debug_links() + so we do not need to do any further processing here. */ + return NULL; -static int -display_debug_not_supported (struct dwarf_section *section, - void *file ATTRIBUTE_UNUSED) -{ - printf (_("Displaying the debug contents of section %s is not yet supported.\n"), - section->name); + /* FIXME: We do not check for the presence of both link sections in the same file. */ + /* FIXME: We do not check the separate debug info file to see if it too contains debuglinks. */ + /* FIXME: We do not check for the presence of multiple, same-name debuglink sections. */ + /* FIXME: We do not check for the presence of a dwo link as well as a debuglink. */ - return 1; -} + if (load_debug_section (gnu_debugaltlink, file)) + { + Build_id_data * build_id_data; -void * -cmalloc (size_t nmemb, size_t size) -{ - /* Check for overflow. */ - if (nmemb >= ~(size_t) 0 / size) - return NULL; - else - return malloc (nmemb * size); -} + return load_separate_debug_info (filename, + & debug_displays[gnu_debugaltlink].section, + parse_gnu_debugaltlink, + check_gnu_debugaltlink, + & build_id_data); + } -void * -xcmalloc (size_t nmemb, size_t size) -{ - /* Check for overflow. */ - if (nmemb >= ~(size_t) 0 / size) - return NULL; - else - return xmalloc (nmemb * size); -} + if (load_debug_section (gnu_debuglink, file)) + { + unsigned long crc32; -void * -xcrealloc (void *ptr, size_t nmemb, size_t size) -{ - /* Check for overflow. */ - if (nmemb >= ~(size_t) 0 / size) - return NULL; - else - return xrealloc (ptr, nmemb * size); -} + return load_separate_debug_info (filename, + & debug_displays[gnu_debuglink].section, + parse_gnu_debuglink, + check_gnu_debuglink, + & crc32); + } + + do_follow_links = 0; + return NULL; +} void free_debug_memory (void) @@ -5343,10 +10093,18 @@ free_debug_memory (void) free (debug_information [i].range_lists); } } - free (debug_information); debug_information = NULL; - num_debug_info_entries = 0; + alloc_num_debug_info_entries = num_debug_info_entries = 0; + } + + if (separate_debug_file != NULL) + { + close_debug_file (separate_debug_file); + separate_debug_file = NULL; + + free ((void *) separate_debug_filename); + separate_debug_filename = NULL; } } @@ -5366,23 +10124,27 @@ dwarf_select_sections_by_names (const char *names) /* Please keep this table alpha- sorted. */ { "Ranges", & do_debug_ranges, 1 }, { "abbrev", & do_debug_abbrevs, 1 }, + { "addr", & do_debug_addr, 1 }, { "aranges", & do_debug_aranges, 1 }, + { "cu_index", & do_debug_cu_index, 1 }, + { "decodedline", & do_debug_lines, FLAG_DEBUG_LINES_DECODED }, + { "follow-links", & do_follow_links, 1 }, { "frames", & do_debug_frames, 1 }, { "frames-interp", & do_debug_frames_interp, 1 }, + /* The special .gdb_index section. */ + { "gdb_index", & do_gdb_index, 1 }, { "info", & do_debug_info, 1 }, { "line", & do_debug_lines, FLAG_DEBUG_LINES_RAW }, /* For backwards compatibility. */ - { "rawline", & do_debug_lines, FLAG_DEBUG_LINES_RAW }, - { "decodedline", & do_debug_lines, FLAG_DEBUG_LINES_DECODED }, + { "links", & do_debug_links, 1 }, { "loc", & do_debug_loc, 1 }, { "macro", & do_debug_macinfo, 1 }, { "pubnames", & do_debug_pubnames, 1 }, { "pubtypes", & do_debug_pubtypes, 1 }, - /* This entry is for compatability + /* This entry is for compatibility with earlier versions of readelf. */ { "ranges", & do_debug_aranges, 1 }, + { "rawline", & do_debug_lines, FLAG_DEBUG_LINES_RAW }, { "str", & do_debug_str, 1 }, - /* The special .gdb_index section. */ - { "gdb_index", & do_gdb_index, 1 }, /* These trace_* sections are used by Itanium VMS. */ { "trace_abbrev", & do_trace_abbrevs, 1 }, { "trace_aranges", & do_trace_aranges, 1 }, @@ -5437,58 +10199,30 @@ dwarf_select_sections_by_letters (const char *letters) while (letters[lindex]) switch (letters[lindex++]) { - case 'i': - do_debug_info = 1; - break; - - case 'a': - do_debug_abbrevs = 1; - break; - - case 'l': - do_debug_lines |= FLAG_DEBUG_LINES_RAW; - break; - - case 'L': - do_debug_lines |= FLAG_DEBUG_LINES_DECODED; - break; - - case 'p': - do_debug_pubnames = 1; - break; - - case 't': - do_debug_pubtypes = 1; - break; - - case 'r': - do_debug_aranges = 1; - break; - - case 'R': - do_debug_ranges = 1; - break; - - case 'F': - do_debug_frames_interp = 1; - case 'f': - do_debug_frames = 1; - break; - - case 'm': - do_debug_macinfo = 1; - break; - - case 's': - do_debug_str = 1; - break; - - case 'o': - do_debug_loc = 1; - break; + case 'A': do_debug_addr = 1; break; + case 'a': do_debug_abbrevs = 1; break; + case 'c': do_debug_cu_index = 1; break; + case 'F': do_debug_frames_interp = 1; /* Fall through. */ + case 'f': do_debug_frames = 1; break; + case 'g': do_gdb_index = 1; break; + case 'i': do_debug_info = 1; break; + case 'K': do_follow_links = 1; break; + case 'k': do_debug_links = 1; break; + case 'l': do_debug_lines |= FLAG_DEBUG_LINES_RAW; break; + case 'L': do_debug_lines |= FLAG_DEBUG_LINES_DECODED; break; + case 'm': do_debug_macinfo = 1; break; + case 'o': do_debug_loc = 1; break; + case 'p': do_debug_pubnames = 1; break; + case 'R': do_debug_ranges = 1; break; + case 'r': do_debug_aranges = 1; break; + case 's': do_debug_str = 1; break; + case 'T': do_trace_aranges = 1; break; + case 't': do_debug_pubtypes = 1; break; + case 'U': do_trace_info = 1; break; + case 'u': do_trace_abbrevs = 1; break; default: - warn (_("Unrecognized debug option '%s'\n"), optarg); + warn (_("Unrecognized debug option '%s'\n"), letters); break; } } @@ -5511,48 +10245,66 @@ dwarf_select_sections_all (void) do_trace_info = 1; do_trace_abbrevs = 1; do_trace_aranges = 1; + do_debug_addr = 1; + do_debug_cu_index = 1; + do_follow_links = 1; + do_debug_links = 1; } +#define NO_ABBREVS NULL, NULL, NULL, 0, 0, 0, NULL, 0, NULL +#define ABBREV(N) NULL, NULL, NULL, 0, 0, N, NULL, 0, NULL + +/* N.B. The order here must match the order in section_display_enum. */ + struct dwarf_section_display debug_displays[] = { - { { ".debug_abbrev", ".zdebug_abbrev", NULL, NULL, 0, 0 }, - display_debug_abbrev, &do_debug_abbrevs, 0 }, - { { ".debug_aranges", ".zdebug_aranges", NULL, NULL, 0, 0 }, - display_debug_aranges, &do_debug_aranges, 1 }, - { { ".debug_frame", ".zdebug_frame", NULL, NULL, 0, 0 }, - display_debug_frames, &do_debug_frames, 1 }, - { { ".debug_info", ".zdebug_info", NULL, NULL, 0, 0 }, - display_debug_info, &do_debug_info, 1 }, - { { ".debug_line", ".zdebug_line", NULL, NULL, 0, 0 }, - display_debug_lines, &do_debug_lines, 1 }, - { { ".debug_pubnames", ".zdebug_pubnames", NULL, NULL, 0, 0 }, - display_debug_pubnames, &do_debug_pubnames, 0 }, - { { ".eh_frame", "", NULL, NULL, 0, 0 }, - display_debug_frames, &do_debug_frames, 1 }, - { { ".debug_macinfo", ".zdebug_macinfo", NULL, NULL, 0, 0 }, - display_debug_macinfo, &do_debug_macinfo, 0 }, - { { ".debug_str", ".zdebug_str", NULL, NULL, 0, 0 }, - display_debug_str, &do_debug_str, 0 }, - { { ".debug_loc", ".zdebug_loc", NULL, NULL, 0, 0 }, - display_debug_loc, &do_debug_loc, 1 }, - { { ".debug_pubtypes", ".zdebug_pubtypes", NULL, NULL, 0, 0 }, - display_debug_pubnames, &do_debug_pubtypes, 0 }, - { { ".debug_ranges", ".zdebug_ranges", NULL, NULL, 0, 0 }, - display_debug_ranges, &do_debug_ranges, 1 }, - { { ".debug_static_func", ".zdebug_static_func", NULL, NULL, 0, 0 }, - display_debug_not_supported, NULL, 0 }, - { { ".debug_static_vars", ".zdebug_static_vars", NULL, NULL, 0, 0 }, - display_debug_not_supported, NULL, 0 }, - { { ".debug_types", ".zdebug_types", NULL, NULL, 0, 0 }, - display_debug_types, &do_debug_info, 1 }, - { { ".debug_weaknames", ".zdebug_weaknames", NULL, NULL, 0, 0 }, - display_debug_not_supported, NULL, 0 }, - { { ".gdb_index", "", NULL, NULL, 0, 0 }, - display_gdb_index, &do_gdb_index, 0 }, - { { ".trace_info", "", NULL, NULL, 0, 0 }, - display_trace_info, &do_trace_info, 1 }, - { { ".trace_abbrev", "", NULL, NULL, 0, 0 }, - display_debug_abbrev, &do_trace_abbrevs, 0 }, - { { ".trace_aranges", "", NULL, NULL, 0, 0 }, - display_debug_aranges, &do_trace_aranges, 0 } + { { ".debug_abbrev", ".zdebug_abbrev", NO_ABBREVS }, display_debug_abbrev, &do_debug_abbrevs, FALSE }, + { { ".debug_aranges", ".zdebug_aranges", NO_ABBREVS }, display_debug_aranges, &do_debug_aranges, TRUE }, + { { ".debug_frame", ".zdebug_frame", NO_ABBREVS }, display_debug_frames, &do_debug_frames, TRUE }, + { { ".debug_info", ".zdebug_info", ABBREV (abbrev)}, display_debug_info, &do_debug_info, TRUE }, + { { ".debug_line", ".zdebug_line", NO_ABBREVS }, display_debug_lines, &do_debug_lines, TRUE }, + { { ".debug_pubnames", ".zdebug_pubnames", NO_ABBREVS }, display_debug_pubnames, &do_debug_pubnames, FALSE }, + { { ".debug_gnu_pubnames", ".zdebug_gnu_pubnames", NO_ABBREVS }, display_debug_gnu_pubnames, &do_debug_pubnames, FALSE }, + { { ".eh_frame", "", NO_ABBREVS }, display_debug_frames, &do_debug_frames, TRUE }, + { { ".debug_macinfo", ".zdebug_macinfo", NO_ABBREVS }, display_debug_macinfo, &do_debug_macinfo, FALSE }, + { { ".debug_macro", ".zdebug_macro", NO_ABBREVS }, display_debug_macro, &do_debug_macinfo, TRUE }, + { { ".debug_str", ".zdebug_str", NO_ABBREVS }, display_debug_str, &do_debug_str, FALSE }, + { { ".debug_line_str", ".zdebug_line_str", NO_ABBREVS }, display_debug_str, &do_debug_str, FALSE }, + { { ".debug_loc", ".zdebug_loc", NO_ABBREVS }, display_debug_loc, &do_debug_loc, TRUE }, + { { ".debug_loclists", ".zdebug_loclists", NO_ABBREVS }, display_debug_loc, &do_debug_loc, TRUE }, + { { ".debug_pubtypes", ".zdebug_pubtypes", NO_ABBREVS }, display_debug_pubnames, &do_debug_pubtypes, FALSE }, + { { ".debug_gnu_pubtypes", ".zdebug_gnu_pubtypes", NO_ABBREVS }, display_debug_gnu_pubnames, &do_debug_pubtypes, FALSE }, + { { ".debug_ranges", ".zdebug_ranges", NO_ABBREVS }, display_debug_ranges, &do_debug_ranges, TRUE }, + { { ".debug_rnglists", ".zdebug_rnglists", NO_ABBREVS }, display_debug_ranges, &do_debug_ranges, TRUE }, + { { ".debug_static_func", ".zdebug_static_func", NO_ABBREVS }, display_debug_not_supported, NULL, FALSE }, + { { ".debug_static_vars", ".zdebug_static_vars", NO_ABBREVS }, display_debug_not_supported, NULL, FALSE }, + { { ".debug_types", ".zdebug_types", ABBREV (abbrev) }, display_debug_types, &do_debug_info, TRUE }, + { { ".debug_weaknames", ".zdebug_weaknames", NO_ABBREVS }, display_debug_not_supported, NULL, FALSE }, + { { ".gdb_index", "", NO_ABBREVS }, display_gdb_index, &do_gdb_index, FALSE }, + { { ".debug_names", "", NO_ABBREVS }, display_debug_names, &do_gdb_index, FALSE }, + { { ".trace_info", "", ABBREV (trace_abbrev) }, display_trace_info, &do_trace_info, TRUE }, + { { ".trace_abbrev", "", NO_ABBREVS }, display_debug_abbrev, &do_trace_abbrevs, FALSE }, + { { ".trace_aranges", "", NO_ABBREVS }, display_debug_aranges, &do_trace_aranges, FALSE }, + { { ".debug_info.dwo", ".zdebug_info.dwo", ABBREV (abbrev_dwo) }, display_debug_info, &do_debug_info, TRUE }, + { { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo", NO_ABBREVS }, display_debug_abbrev, &do_debug_abbrevs, FALSE }, + { { ".debug_types.dwo", ".zdebug_types.dwo", ABBREV (abbrev_dwo) }, display_debug_types, &do_debug_info, TRUE }, + { { ".debug_line.dwo", ".zdebug_line.dwo", NO_ABBREVS }, display_debug_lines, &do_debug_lines, TRUE }, + { { ".debug_loc.dwo", ".zdebug_loc.dwo", NO_ABBREVS }, display_debug_loc, &do_debug_loc, TRUE }, + { { ".debug_macro.dwo", ".zdebug_macro.dwo", NO_ABBREVS }, display_debug_macro, &do_debug_macinfo, TRUE }, + { { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo", NO_ABBREVS }, display_debug_macinfo, &do_debug_macinfo, FALSE }, + { { ".debug_str.dwo", ".zdebug_str.dwo", NO_ABBREVS }, display_debug_str, &do_debug_str, TRUE }, + { { ".debug_str_offsets", ".zdebug_str_offsets", NO_ABBREVS }, display_debug_str_offsets, NULL, FALSE }, + { { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo", NO_ABBREVS }, display_debug_str_offsets, NULL, FALSE }, + { { ".debug_addr", ".zdebug_addr", NO_ABBREVS }, display_debug_addr, &do_debug_addr, TRUE }, + { { ".debug_cu_index", "", NO_ABBREVS }, display_cu_index, &do_debug_cu_index, FALSE }, + { { ".debug_tu_index", "", NO_ABBREVS }, display_cu_index, &do_debug_cu_index, FALSE }, + { { ".gnu_debuglink", "", NO_ABBREVS }, display_debug_links, &do_debug_links, FALSE }, + { { ".gnu_debugaltlink", "", NO_ABBREVS }, display_debug_links, &do_debug_links, FALSE }, + /* Separate debug info files can containt their own .debug_str section, + and this might be in *addition* to a .debug_str section already present + in the main file. Hence we need to have two entries for .debug_str. */ + { { ".debug_str", ".zdebug_str", NO_ABBREVS }, display_debug_str, &do_debug_str, FALSE }, }; + +/* A static assertion. */ +extern int debug_displays_assert[ARRAY_SIZE (debug_displays) == max ? 1 : -1];