/* objdump.c -- dump information about an object file.
Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001, 2002, 2003, 2004, 2005
+ 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
Free Software Foundation, Inc.
This file is part of GNU Binutils.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
+ the Free Software Foundation; either version 3, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ Foundation, 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
+
/* Objdump overview.
disassembling is done by the libopcodes library, via a function pointer
supplied by the disassembler() function. */
+#include "sysdep.h"
#include "bfd.h"
-#include "bfdver.h"
+#include "elf-bfd.h"
#include "progress.h"
#include "bucomm.h"
-#include "budemang.h"
+#include "dwarf.h"
#include "getopt.h"
#include "safe-ctype.h"
#include "dis-asm.h"
#include "libiberty.h"
#include "demangle.h"
+#include "filenames.h"
#include "debug.h"
#include "budbg.h"
+#ifdef HAVE_MMAP
+#include <sys/mman.h>
+#endif
+
+#include <sys/stat.h>
+
/* Internal headers for the ELF .stab-dump code - sorry. */
#define BYTES_IN_WORD 32
#include "aout/aout64.h"
-#ifdef NEED_DECLARATION_FPRINTF
-/* This is needed by init_disassemble_info(). */
-extern int fprintf (FILE *, const char *, ...);
-#endif
-
/* Exit status. */
static int exit_status = 0;
static int with_line_numbers; /* -l */
static bfd_boolean with_source_code; /* -S */
static int show_raw_insn; /* --show-raw-insn */
+static int dump_dwarf_section_info; /* --dwarf */
static int dump_stab_section_info; /* --stabs */
static int do_demangle; /* -C, --demangle */
static bfd_boolean disassemble; /* -d */
static int dump_special_syms = 0; /* --special-syms */
static bfd_vma adjust_section_vma = 0; /* --adjust-vma */
static int file_start_context = 0; /* --file-start-context */
+static bfd_boolean display_file_offsets;/* -F */
+static const char *prefix; /* --prefix */
+static int prefix_strip; /* --prefix-strip */
+static size_t prefix_length;
/* Pointer to an array of section names provided by
one or more "-j secname" command line options. */
arelent ** dynrelbuf;
long dynrelcount;
disassembler_ftype disassemble_fn;
-#ifdef DISASSEMBLER_NEEDS_RELOCS
arelent * reloc;
-#endif
};
/* Architecture to disassemble for, or default if NULL. */
static char *strtab;
static bfd_size_type stabstr_size;
+
+static bfd_boolean is_relocatable = FALSE;
\f
static void
usage (FILE *stream, int status)
-g, --debugging Display debug information in object file\n\
-e, --debugging-tags Display debug information using ctags style\n\
-G, --stabs Display (in raw form) any STABS info in the file\n\
+ -W[lLiaprmfFsoR] or\n\
+ --dwarf[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=str,=loc,=Ranges]\n\
+ Display DWARF info in the file\n\
-t, --syms Display the contents of the symbol table(s)\n\
-T, --dynamic-syms Display the contents of the dynamic symbol table\n\
-r, --reloc Display the relocation entries in the file\n\
-R, --dynamic-reloc Display the dynamic relocation entries in the file\n\
+ @<file> Read options from <file>\n\
-v, --version Display this program's version number\n\
-i, --info List object formats and architectures supported\n\
-H, --help Display this information\n\
--file-start-context Include context from start of file (with -S)\n\
-I, --include=DIR Add DIR to search list for source files\n\
-l, --line-numbers Include line numbers and filenames in output\n\
+ -F, --file-offsets Include file offsets when displaying information\n\
-C, --demangle[=STYLE] Decode mangled/processed symbol names\n\
The STYLE, if specified, can be `auto', `gnu',\n\
`lucid', `arm', `hp', `edg', `gnu-v3', `java'\n\
--[no-]show-raw-insn Display hex alongside symbolic disassembly\n\
--adjust-vma=OFFSET Add OFFSET to all displayed section addresses\n\
--special-syms Include special symbols in symbol dumps\n\
+ --prefix=PREFIX Add PREFIX to absolute paths for -S\n\
+ --prefix-strip=LEVEL Strip initial directory names for -S\n\
\n"));
list_supported_targets (program_name, stream);
list_supported_architectures (program_name, stream);
disassembler_usage (stream);
}
- if (status == 0)
+ if (REPORT_BUGS_TO[0] && status == 0)
fprintf (stream, _("Report bugs to %s.\n"), REPORT_BUGS_TO);
exit (status);
}
OPTION_ENDIAN=150,
OPTION_START_ADDRESS,
OPTION_STOP_ADDRESS,
+ OPTION_DWARF,
+ OPTION_PREFIX,
+ OPTION_PREFIX_STRIP,
OPTION_ADJUST_VMA
};
{"dynamic-syms", no_argument, NULL, 'T'},
{"endian", required_argument, NULL, OPTION_ENDIAN},
{"file-headers", no_argument, NULL, 'f'},
+ {"file-offsets", no_argument, NULL, 'F'},
{"file-start-context", no_argument, &file_start_context, 1},
{"full-contents", no_argument, NULL, 's'},
{"headers", no_argument, NULL, 'h'},
{"source", no_argument, NULL, 'S'},
{"special-syms", no_argument, &dump_special_syms, 1},
{"include", required_argument, NULL, 'I'},
+ {"dwarf", optional_argument, NULL, OPTION_DWARF},
{"stabs", no_argument, NULL, 'G'},
{"start-address", required_argument, NULL, OPTION_START_ADDRESS},
{"stop-address", required_argument, NULL, OPTION_STOP_ADDRESS},
{"target", required_argument, NULL, 'b'},
{"version", no_argument, NULL, 'V'},
{"wide", no_argument, NULL, 'w'},
+ {"prefix", required_argument, NULL, OPTION_PREFIX},
+ {"prefix-strip", required_argument, NULL, OPTION_PREFIX_STRIP},
{0, no_argument, 0, 0}
};
\f
char *comma = "";
unsigned int opb = bfd_octets_per_byte (abfd);
+ /* Ignore linker created section. See elfNN_ia64_object_p in
+ bfd/elfxx-ia64.c. */
+ if (section->flags & SEC_LINKER_CREATED)
+ return;
+
printf ("%3d %-13s %08lx ", section->index,
bfd_get_section_name (abfd, section),
(unsigned long) bfd_section_size (abfd, section) / opb);
if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
PF (SEC_COFF_SHARED, "SHARED");
PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
+ PF (SEC_GROUP, "GROUP");
if ((section->flags & SEC_LINK_ONCE) != 0)
{
if (do_demangle && name[0] != '\0')
{
/* Demangle the name. */
- alloc = demangle (abfd, name);
- name = alloc;
+ alloc = bfd_demangle (abfd, name, DMGL_ANSI | DMGL_PARAMS);
+ if (alloc != NULL)
+ name = alloc;
}
if (info != NULL)
bfd *abfd;
asection *sec;
unsigned int opb;
+ bfd_boolean want_section;
if (sorted_symcount < 1)
return NULL;
== bfd_asymbol_value (sorted_syms[thisplace - 1])))
--thisplace;
+ /* Prefer a symbol in the current section if we have multple symbols
+ with the same value, as can occur with overlays or zero size
+ sections. */
+ min = thisplace;
+ while (min < max
+ && (bfd_asymbol_value (sorted_syms[min])
+ == bfd_asymbol_value (sorted_syms[thisplace])))
+ {
+ if (sorted_syms[min]->section == sec
+ && info->symbol_is_valid (sorted_syms[min], info))
+ {
+ thisplace = min;
+
+ if (place != NULL)
+ *place = thisplace;
+
+ return sorted_syms[thisplace];
+ }
+ ++min;
+ }
+
/* If the file is relocatable, and the symbol could be from this
section, prefer a symbol from this section over symbols from
others, even if the other symbol's value might be closer.
Note that this may be wrong for some symbol references if the
sections have overlapping memory ranges, but in that case there's
no way to tell what's desired without looking at the relocation
- table. */
- if (sorted_syms[thisplace]->section != sec
- && (aux->require_sec
- || ((abfd->flags & HAS_RELOC) != 0
- && vma >= bfd_get_section_vma (abfd, sec)
- && vma < (bfd_get_section_vma (abfd, sec)
- + bfd_section_size (abfd, sec) / opb))))
+ table.
+
+ Also give the target a chance to reject symbols. */
+ want_section = (aux->require_sec
+ || ((abfd->flags & HAS_RELOC) != 0
+ && vma >= bfd_get_section_vma (abfd, sec)
+ && vma < (bfd_get_section_vma (abfd, sec)
+ + bfd_section_size (abfd, sec) / opb)));
+ if ((sorted_syms[thisplace]->section != sec && want_section)
+ || !info->symbol_is_valid (sorted_syms[thisplace], info))
{
long i;
+ long newplace = sorted_symcount;
- for (i = thisplace + 1; i < sorted_symcount; i++)
+ for (i = min - 1; i >= 0; i--)
{
- if (bfd_asymbol_value (sorted_syms[i])
- != bfd_asymbol_value (sorted_syms[thisplace]))
- break;
- }
+ if ((sorted_syms[i]->section == sec || !want_section)
+ && info->symbol_is_valid (sorted_syms[i], info))
+ {
+ if (newplace == sorted_symcount)
+ newplace = i;
- --i;
+ if (bfd_asymbol_value (sorted_syms[i])
+ != bfd_asymbol_value (sorted_syms[newplace]))
+ break;
- for (; i >= 0; i--)
- {
- if (sorted_syms[i]->section == sec
- && (i == 0
- || sorted_syms[i - 1]->section != sec
- || (bfd_asymbol_value (sorted_syms[i])
- != bfd_asymbol_value (sorted_syms[i - 1]))))
- {
- thisplace = i;
- break;
+ /* Remember this symbol and keep searching until we reach
+ an earlier address. */
+ newplace = i;
}
}
- if (sorted_syms[thisplace]->section != sec)
+ if (newplace != sorted_symcount)
+ thisplace = newplace;
+ else
{
/* We didn't find a good symbol with a smaller value.
Look for one with a larger value. */
for (i = thisplace + 1; i < sorted_symcount; i++)
{
- if (sorted_syms[i]->section == sec)
+ if ((sorted_syms[i]->section == sec || !want_section)
+ && info->symbol_is_valid (sorted_syms[i], info))
{
thisplace = i;
break;
}
}
- if (sorted_syms[thisplace]->section != sec
- && (aux->require_sec
- || ((abfd->flags & HAS_RELOC) != 0
- && vma >= bfd_get_section_vma (abfd, sec)
- && vma < (bfd_get_section_vma (abfd, sec)
- + bfd_section_size (abfd, sec)))))
+ if ((sorted_syms[thisplace]->section != sec && want_section)
+ || !info->symbol_is_valid (sorted_syms[thisplace], info))
/* There is no suitable symbol. */
return NULL;
}
- /* Give the target a chance to reject the symbol. */
- while (! info->symbol_is_valid (sorted_syms [thisplace], info))
- {
- ++ thisplace;
- if (thisplace >= sorted_symcount
- || bfd_asymbol_value (sorted_syms [thisplace]) > vma)
- return NULL;
- }
-
if (place != NULL)
*place = thisplace;
}
(*info->fprintf_func) (info->stream, ">");
}
+
+ if (display_file_offsets)
+ info->fprintf_func (info->stream, _(" (File Offset: 0x%lx)"),
+ (long int)(sec->filepos + (vma - sec->vma)));
}
/* Print an address (VMA), symbolically if possible.
bfd_boolean skip_zeroes)
{
struct objdump_disasm_info *aux;
- asymbol *sym = NULL; /* Initialize to avoid compiler warning. */
-#ifdef DISASSEMBLER_NEEDS_RELOCS
+ asymbol *sym = NULL;
bfd_boolean skip_find = FALSE;
-#endif
+
+ aux = (struct objdump_disasm_info *) info->application_data;
if (sorted_symcount < 1)
{
(*info->fprintf_func) (info->stream, "0x");
objdump_print_value (vma, info, skip_zeroes);
+
+ if (display_file_offsets)
+ info->fprintf_func (info->stream, _(" (File Offset: 0x%lx)"),
+ (long int)(aux->sec->filepos + (vma - aux->sec->vma)));
return;
}
- aux = (struct objdump_disasm_info *) info->application_data;
-
-#ifdef DISASSEMBLER_NEEDS_RELOCS
if (aux->reloc != NULL
&& aux->reloc->sym_ptr_ptr != NULL
&& * aux->reloc->sym_ptr_ptr != NULL)
}
if (!skip_find)
-#endif
sym = find_symbol_for_address (vma, info, NULL);
objdump_print_addr_with_sym (aux->abfd, aux->sec, sym, vma, info,
objdump_print_addr (vma, info, ! prefix_addresses);
}
-/* Determine of the given address has a symbol associated with it. */
+/* Determine if the given address has a symbol associated with it. */
static int
objdump_symbol_at_address (bfd_vma vma, struct disassemble_info * info)
struct print_file_list *next;
const char *filename;
const char *modname;
- unsigned int line;
- FILE *f;
+ const char *map;
+ size_t mapsize;
+ const char **linemap;
+ unsigned maxline;
+ unsigned last_line;
+ int first;
};
static struct print_file_list *print_files;
#define SHOW_PRECEDING_CONTEXT_LINES (5)
+/* Read a complete file into memory. */
+
+static const char *
+slurp_file (const char *fn, size_t *size)
+{
+#ifdef HAVE_MMAP
+ int ps = getpagesize ();
+ size_t msize;
+#endif
+ const char *map;
+ struct stat st;
+ int fd = open (fn, O_RDONLY | O_BINARY);
+
+ if (fd < 0)
+ return NULL;
+ if (fstat (fd, &st) < 0)
+ return NULL;
+ *size = st.st_size;
+#ifdef HAVE_MMAP
+ msize = (*size + ps - 1) & ~(ps - 1);
+ map = mmap (NULL, msize, PROT_READ, MAP_SHARED, fd, 0);
+ if (map != (char *)-1L)
+ {
+ close(fd);
+ return map;
+ }
+#endif
+ map = malloc (*size);
+ if (!map || (size_t) read (fd, (char *)map, *size) != *size)
+ {
+ free ((void *)map);
+ map = NULL;
+ }
+ close (fd);
+ return map;
+}
+
+#define line_map_decrease 5
+
+/* Precompute array of lines for a mapped file. */
+
+static const char **
+index_file (const char *map, size_t size, unsigned int *maxline)
+{
+ const char *p, *lstart, *end;
+ int chars_per_line = 45; /* First iteration will use 40. */
+ unsigned int lineno;
+ const char **linemap = NULL;
+ unsigned long line_map_size = 0;
+
+ lineno = 0;
+ lstart = map;
+ end = map + size;
+
+ for (p = map; p < end; p++)
+ {
+ if (*p == '\n')
+ {
+ if (p + 1 < end && p[1] == '\r')
+ p++;
+ }
+ else if (*p == '\r')
+ {
+ if (p + 1 < end && p[1] == '\n')
+ p++;
+ }
+ else
+ continue;
+
+ /* End of line found. */
+
+ if (linemap == NULL || line_map_size < lineno + 1)
+ {
+ unsigned long newsize;
+
+ chars_per_line -= line_map_decrease;
+ if (chars_per_line <= 1)
+ chars_per_line = 1;
+ line_map_size = size / chars_per_line + 1;
+ if (line_map_size < lineno + 1)
+ line_map_size = lineno + 1;
+ newsize = line_map_size * sizeof (char *);
+ linemap = xrealloc (linemap, newsize);
+ }
+
+ linemap[lineno++] = lstart;
+ lstart = p + 1;
+ }
+
+ *maxline = lineno;
+ return linemap;
+}
+
/* Tries to open MODNAME, and if successful adds a node to print_files
linked list and returns that node. Returns NULL on failure. */
try_print_file_open (const char *origname, const char *modname)
{
struct print_file_list *p;
- FILE *f;
- f = fopen (modname, "r");
- if (f == NULL)
- return NULL;
+ p = xmalloc (sizeof (struct print_file_list));
- if (print_files != NULL && print_files->f != NULL)
+ p->map = slurp_file (modname, &p->mapsize);
+ if (p->map == NULL)
{
- fclose (print_files->f);
- print_files->f = NULL;
+ free (p);
+ return NULL;
}
-
- p = xmalloc (sizeof (struct print_file_list));
+
+ p->linemap = index_file (p->map, p->mapsize, &p->maxline);
+ p->last_line = 0;
p->filename = origname;
p->modname = modname;
- p->line = 0;
- p->f = f;
p->next = print_files;
+ p->first = 1;
print_files = p;
return p;
}
return NULL;
}
-/* Skip ahead to a given line in a file, optionally printing each
- line. */
+/* Print a source file line. */
-static void
-skip_to_line (struct print_file_list *p, unsigned int line,
- bfd_boolean show)
+static void
+print_line (struct print_file_list *p, unsigned int line)
{
- while (p->line < line)
- {
- char buf[100];
-
- if (fgets (buf, sizeof buf, p->f) == NULL)
- {
- fclose (p->f);
- p->f = NULL;
- break;
- }
+ const char *l;
+ size_t len;
+
+ --line;
+ if (line >= p->maxline)
+ return;
+ l = p->linemap [line];
+ /* Test fwrite return value to quiet glibc warning. */
+ len = strcspn (l, "\n\r");
+ if (len == 0 || fwrite (l, len, 1, stdout) == 1)
+ putchar ('\n');
+}
- if (show)
- printf ("%s", buf);
+/* Print a range of source code lines. */
- if (strchr (buf, '\n') != NULL)
- ++p->line;
+static void
+dump_lines (struct print_file_list *p, unsigned int start, unsigned int end)
+{
+ if (p->map == NULL)
+ return;
+ while (start <= end)
+ {
+ print_line (p, start);
+ start++;
}
}
const char *filename;
const char *functionname;
unsigned int line;
+ bfd_boolean reloc;
if (! with_line_numbers && ! with_source_code)
return;
if (functionname != NULL && *functionname == '\0')
functionname = NULL;
+ if (filename
+ && IS_ABSOLUTE_PATH (filename)
+ && prefix)
+ {
+ char *path_up;
+ const char *fname = filename;
+ char *path = (char *) alloca (prefix_length + PATH_MAX + 1);
+
+ if (prefix_length)
+ memcpy (path, prefix, prefix_length);
+ path_up = path + prefix_length;
+
+ /* Build relocated filename, stripping off leading directories
+ from the initial filename if requested. */
+ if (prefix_strip > 0)
+ {
+ int level = 0;
+ const char *s;
+
+ /* Skip selected directory levels. */
+ for (s = fname + 1; *s != '\0' && level < prefix_strip; s++)
+ if (IS_DIR_SEPARATOR(*s))
+ {
+ fname = s;
+ level++;
+ }
+ }
+
+ /* Update complete filename. */
+ strncpy (path_up, fname, PATH_MAX);
+ path_up[PATH_MAX] = '\0';
+
+ filename = path;
+ reloc = TRUE;
+ }
+ else
+ reloc = FALSE;
+
if (with_line_numbers)
{
if (functionname != NULL
&& line > 0)
{
struct print_file_list **pp, *p;
+ unsigned l;
for (pp = &print_files; *pp != NULL; pp = &(*pp)->next)
if (strcmp ((*pp)->filename, filename) == 0)
break;
p = *pp;
- if (p != NULL)
- {
- if (p != print_files)
- {
- int l;
-
- /* We have reencountered a file name which we saw
- earlier. This implies that either we are dumping out
- code from an included file, or the same file was
- linked in more than once. There are two common cases
- of an included file: inline functions in a header
- file, and a bison or flex skeleton file. In the
- former case we want to just start printing (but we
- back up a few lines to give context); in the latter
- case we want to continue from where we left off. I
- can't think of a good way to distinguish the cases,
- so I used a heuristic based on the file name. */
- if (strcmp (p->filename + strlen (p->filename) - 2, ".h") != 0)
- l = p->line;
- else
- {
- l = line - SHOW_PRECEDING_CONTEXT_LINES;
- if (l < 0)
- l = 0;
- }
-
- if (p->f == NULL)
- {
- p->f = fopen (p->modname, "r");
- p->line = 0;
- }
- if (p->f != NULL)
- skip_to_line (p, l, FALSE);
-
- if (print_files->f != NULL)
- {
- fclose (print_files->f);
- print_files->f = NULL;
- }
- }
-
- if (p->f != NULL)
- {
- skip_to_line (p, line, TRUE);
- *pp = p->next;
- p->next = print_files;
- print_files = p;
- }
- }
- else
+ if (p == NULL)
{
+ if (reloc)
+ filename = xstrdup (filename);
p = update_source_path (filename);
+ }
- if (p != NULL)
+ if (p != NULL && line != p->last_line)
+ {
+ if (file_start_context && p->first)
+ l = 1;
+ else
{
- int l;
-
- if (file_start_context)
- l = 0;
- else
- l = line - SHOW_PRECEDING_CONTEXT_LINES;
- if (l < 0)
- l = 0;
- skip_to_line (p, l, FALSE);
- if (p->f != NULL)
- skip_to_line (p, line, TRUE);
+ l = line - SHOW_PRECEDING_CONTEXT_LINES;
+ if (l >= line)
+ l = 1;
+ if (p->last_line >= l && p->last_line <= line)
+ l = p->last_line + 1;
}
+ dump_lines (p, l, line);
+ p->last_line = line;
+ p->first = 0;
}
}
/* sprintf to a "stream". */
-static int
+static int ATTRIBUTE_PRINTF_2
objdump_sprintf (SFILE *f, const char *format, ...)
{
size_t n;
if (! prefix_addresses)
{
char buf[30];
- char *s;
-
- bfd_sprintf_vma
- (aux->abfd, buf,
- (section->vma
- + bfd_section_size (section->owner, section) / opb));
- s = buf;
- while (s[0] == '0' && s[1] == '0' && s[2] == '0' && s[3] == '0'
- && s[4] == '0')
- {
- skip_addr_chars += 4;
- s += 4;
- }
+
+ bfd_sprintf_vma (aux->abfd, buf, section->vma + section->size / opb);
+
+ while (buf[skip_addr_chars] == '0')
+ ++skip_addr_chars;
+
+ /* Don't discard zeros on overflow. */
+ if (buf[skip_addr_chars] == '\0' && section->vma != 0)
+ skip_addr_chars = 0;
+
+ if (skip_addr_chars != 0)
+ skip_addr_chars = (skip_addr_chars - 1) & -4;
}
info->insn_info_valid = 0;
{
bfd_vma z;
bfd_boolean need_nl = FALSE;
-#ifdef DISASSEMBLER_NEEDS_RELOCS
int previous_octets;
/* Remember the length of the previous instruction. */
previous_octets = octets;
-#endif
octets = 0;
/* If we see more than SKIP_ZEROES octets of zeroes, we just
|| (z == stop_offset * opb &&
z - addr_offset * opb < skip_zeroes_at_end)))
{
- printf ("\t...\n");
-
/* If there are more nonzero octets to follow, we only skip
zeroes in multiples of 4, to try to avoid running over
the start of an instruction which happens to start with
z = addr_offset * opb + ((z - addr_offset * opb) &~ 3);
octets = z - addr_offset * opb;
+
+ /* If we are going to display more data, and we are displaying
+ file offsets, then tell the user how many zeroes we skip
+ and the file offset from where we resume dumping. */
+ if (display_file_offsets && ((addr_offset + (octets / opb)) < stop_offset))
+ printf ("\t... (skipping %d zeroes, resuming at file offset: 0x%lx)\n",
+ octets / opb,
+ (unsigned long) (section->filepos
+ + (addr_offset + (octets / opb))));
+ else
+ printf ("\t...\n");
}
else
{
done_dot = FALSE;
if (with_line_numbers || with_source_code)
- /* The line number tables will refer to unadjusted
- section VMAs, so we must undo any VMA modifications
- when calling show_line. */
- show_line (aux->abfd, section, addr_offset - adjust_section_vma);
+ show_line (aux->abfd, section, addr_offset);
if (! prefix_addresses)
{
info->bytes_per_chunk = 0;
info->flags = 0;
-#ifdef DISASSEMBLER_NEEDS_RELOCS
- if (*relppp < relppend)
+ if (info->disassembler_needs_relocs
+ && (bfd_get_file_flags (aux->abfd) & EXEC_P) == 0
+ && (bfd_get_file_flags (aux->abfd) & DYNAMIC) == 0
+ && *relppp < relppend)
{
bfd_signed_vma distance_to_rel;
else
aux->reloc = NULL;
}
-#endif
+
octets = (*disassemble_fn) (section->vma + addr_offset, info);
info->fprintf_func = (fprintf_ftype) fprintf;
info->stream = stdout;
objdump_print_value (section->vma - rel_offset + q->address,
info, TRUE);
- printf (": %s\t", q->howto->name);
+ if (q->howto == NULL)
+ printf (": *unknown*\t");
+ else if (q->howto->name)
+ printf (": %s\t", q->howto->name);
+ else
+ printf (": %d\t", q->howto->type);
if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
printf ("*unknown*");
static void
disassemble_section (bfd *abfd, asection *section, void *info)
{
+ const struct elf_backend_data * bed;
+ bfd_vma sign_adjust = 0;
struct disassemble_info * pinfo = (struct disassemble_info *) info;
struct objdump_disasm_info * paux;
unsigned int opb = pinfo->octets_per_byte;
rel_offset = 0;
if ((section->flags & SEC_RELOC) != 0
-#ifndef DISASSEMBLER_NEEDS_RELOCS
- && dump_reloc_info
-#endif
- )
+ && (dump_reloc_info || pinfo->disassembler_needs_relocs))
{
long relsize;
qsort (rel_pp, rel_count, sizeof (arelent *), compare_relocs);
}
}
-
}
rel_ppend = rel_pp + rel_count;
&& (*rel_pp)->address < rel_offset + addr_offset)
++rel_pp;
- printf (_("Disassembly of section %s:\n"), section->name);
+ if (addr_offset < stop_offset)
+ printf (_("\nDisassembly of section %s:\n"), section->name);
/* Find the nearest symbol forwards from our current position. */
paux->require_sec = TRUE;
sym = find_symbol_for_address (section->vma + addr_offset, info, &place);
paux->require_sec = FALSE;
+ /* PR 9774: If the target used signed 32-bit addresses then we must make
+ sure that we sign extend the value that we calculate for 'addr' in the
+ loop below. */
+ if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
+ && (bed = get_elf_backend_data (abfd)) != NULL
+ && bed->sign_extend_vma)
+ sign_adjust = 0x80000000;
+
/* Disassemble a block of instructions up to the address associated with
the symbol we have just found. Then print the symbol and find the
next symbol on. Repeat until we have disassembled the entire section
bfd_boolean insns;
addr = section->vma + addr_offset;
+ addr = ((addr & ((sign_adjust << 1) - 1)) ^ sign_adjust) - sign_adjust;
if (sym != NULL && bfd_asymbol_value (sym) <= addr)
{
pinfo->symbols = sorted_syms + place;
pinfo->num_symbols = x - place;
+ pinfo->symtab_pos = place;
}
else
{
pinfo->symbols = NULL;
pinfo->num_symbols = 0;
+ pinfo->symtab_pos = -1;
}
if (! prefix_addresses)
else
nextstop_offset = bfd_asymbol_value (nextsym) - section->vma;
- if (nextstop_offset > stop_offset)
+ if (nextstop_offset > stop_offset
+ || nextstop_offset <= addr_offset)
nextstop_offset = stop_offset;
/* If a symbol is explicitly marked as being an object
disassembling them. */
if (disassemble_all
|| sym == NULL
+ || sym->section != section
|| bfd_asymbol_value (sym) > addr
|| ((sym->flags & BSF_OBJECT) == 0
&& (strstr (bfd_asymbol_name (sym), "gnu_compiled")
disassemble_bytes (pinfo, paux->disassemble_fn, insns, data,
addr_offset, nextstop_offset,
rel_offset, &rel_pp, rel_ppend);
-
+
addr_offset = nextstop_offset;
sym = nextsym;
}
aux.require_sec = FALSE;
aux.dynrelbuf = NULL;
aux.dynrelcount = 0;
-#ifdef DISASSEMBLER_NEEDS_RELOCS
aux.reloc = NULL;
-#endif
disasm_info.print_address_func = objdump_print_address;
disasm_info.symbol_at_address_func = objdump_symbol_at_address;
disasm_info.octets_per_byte = bfd_octets_per_byte (abfd);
disasm_info.skip_zeroes = DEFAULT_SKIP_ZEROES;
disasm_info.skip_zeroes_at_end = DEFAULT_SKIP_ZEROES_AT_END;
+ disasm_info.disassembler_needs_relocs = FALSE;
if (bfd_big_endian (abfd))
disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
compare_relocs);
}
}
+ disasm_info.symtab = sorted_syms;
+ disasm_info.symtab_size = sorted_symcount;
bfd_map_over_sections (abfd, disassemble_section, & disasm_info);
free (sorted_syms);
}
\f
+static int
+load_specific_debug_section (enum dwarf_section_display_enum debug,
+ asection *sec, void *file)
+{
+ struct dwarf_section *section = &debug_displays [debug].section;
+ bfd *abfd = file;
+ bfd_boolean ret;
+ int section_is_compressed;
+
+ /* If it is already loaded, do nothing. */
+ if (section->start != NULL)
+ return 1;
+
+ section_is_compressed = section->name == section->compressed_name;
+
+ section->address = 0;
+ section->size = bfd_get_section_size (sec);
+ section->start = xmalloc (section->size);
+
+ if (is_relocatable && debug_displays [debug].relocate)
+ ret = bfd_simple_get_relocated_section_contents (abfd,
+ sec,
+ section->start,
+ syms) != NULL;
+ else
+ ret = bfd_get_section_contents (abfd, sec, section->start, 0,
+ section->size);
+
+ if (! ret)
+ {
+ free_debug_section (debug);
+ printf (_("\nCan't get contents for section '%s'.\n"),
+ section->name);
+ return 0;
+ }
+
+ if (section_is_compressed)
+ {
+ bfd_size_type size = section->size;
+ if (! bfd_uncompress_section_contents (§ion->start, &size))
+ {
+ free_debug_section (debug);
+ printf (_("\nCan't uncompress section '%s'.\n"), section->name);
+ return 0;
+ }
+ section->size = size;
+ }
+
+ return 1;
+}
+
+int
+load_debug_section (enum dwarf_section_display_enum debug, void *file)
+{
+ struct dwarf_section *section = &debug_displays [debug].section;
+ bfd *abfd = file;
+ asection *sec;
+
+ /* If it is already loaded, do nothing. */
+ if (section->start != NULL)
+ return 1;
+
+ /* Locate the debug section. */
+ sec = bfd_get_section_by_name (abfd, section->uncompressed_name);
+ if (sec != NULL)
+ section->name = section->uncompressed_name;
+ else
+ {
+ sec = bfd_get_section_by_name (abfd, section->compressed_name);
+ if (sec != NULL)
+ section->name = section->compressed_name;
+ }
+ if (sec == NULL)
+ return 0;
+
+ return load_specific_debug_section (debug, sec, file);
+}
+
+void
+free_debug_section (enum dwarf_section_display_enum debug)
+{
+ struct dwarf_section *section = &debug_displays [debug].section;
+
+ if (section->start == NULL)
+ return;
+
+ free ((char *) section->start);
+ section->start = NULL;
+ section->address = 0;
+ section->size = 0;
+}
+
+static void
+dump_dwarf_section (bfd *abfd, asection *section,
+ void *arg ATTRIBUTE_UNUSED)
+{
+ const char *name = bfd_get_section_name (abfd, section);
+ const char *match;
+ enum dwarf_section_display_enum i;
+
+ if (CONST_STRNEQ (name, ".gnu.linkonce.wi."))
+ match = ".debug_info";
+ else
+ match = name;
+
+ for (i = 0; i < max; i++)
+ if ((strcmp (debug_displays [i].section.uncompressed_name, match) == 0
+ || strcmp (debug_displays [i].section.compressed_name, match) == 0)
+ && debug_displays [i].enabled != NULL
+ && *debug_displays [i].enabled)
+ {
+ if (!debug_displays [i].eh_frame)
+ {
+ struct dwarf_section *sec = &debug_displays [i].section;
+
+ if (strcmp (sec->uncompressed_name, match) == 0)
+ sec->name = sec->uncompressed_name;
+ else
+ sec->name = sec->compressed_name;
+ if (load_specific_debug_section (i, section, abfd))
+ {
+ debug_displays [i].display (sec, abfd);
+
+ if (i != info && i != abbrev)
+ free_debug_section (i);
+ }
+ }
+ break;
+ }
+}
+
+/* Dump the dwarf debugging information. */
+
+static void
+dump_dwarf (bfd *abfd)
+{
+ is_relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
+
+ /* FIXME: bfd_get_arch_size may return -1. We assume that 64bit
+ targets will return 64. */
+ eh_addr_size = bfd_get_arch_size (abfd) == 64 ? 8 : 4;
+
+ if (bfd_big_endian (abfd))
+ byte_get = byte_get_big_endian;
+ else if (bfd_little_endian (abfd))
+ byte_get = byte_get_little_endian;
+ else
+ abort ();
+
+ if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
+ {
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ init_dwarf_regnames (bed->elf_machine_code);
+ }
+
+ bfd_map_over_sections (abfd, dump_dwarf_section, NULL);
+
+ free_debug_memory ();
+}
+\f
/* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
it. Return NULL on failure. */
dump_stabs_section (abfd, ".stab", ".stabstr");
dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
+
+ /* For Darwin. */
+ dump_stabs_section (abfd, "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr");
+
dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
}
\f
if ((datasize = bfd_section_size (abfd, section)) == 0)
return;
- printf (_("Contents of section %s:\n"), section->name);
-
- data = xmalloc (datasize);
-
- bfd_get_section_contents (abfd, section, data, 0, datasize);
-
/* Compute the address range to display. */
if (start_address == (bfd_vma) -1
|| start_address < section->vma)
stop_offset = datasize / opb;
}
+ if (start_offset >= stop_offset)
+ return;
+
+ printf (_("Contents of section %s:"), section->name);
+ if (display_file_offsets)
+ printf (_(" (Starting at file offset: 0x%lx)"),
+ (unsigned long) (section->filepos + start_offset));
+ printf ("\n");
+
+ data = xmalloc (datasize);
+
+ bfd_get_section_contents (abfd, section, data, 0, datasize);
+
width = 4;
bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
printf (_("could not determine the type of symbol number %ld\n"),
count);
- else if (dump_special_syms
- || !bfd_is_target_special_symbol (cur_bfd, *current))
+ else if (process_section_p ((* current)->section)
+ && (dump_special_syms
+ || !bfd_is_target_special_symbol (cur_bfd, *current)))
{
const char *name = (*current)->name;
/* If we want to demangle the name, we demangle it
here, and temporarily clobber it while calling
bfd_print_symbol. FIXME: This is a gross hack. */
- alloc = demangle (cur_bfd, name);
- (*current)->name = alloc;
+ alloc = bfd_demangle (cur_bfd, name, DMGL_ANSI | DMGL_PARAMS);
+ if (alloc != NULL)
+ (*current)->name = alloc;
bfd_print_symbol (cur_bfd, stdout, *current,
bfd_print_symbol_all);
- (*current)->name = name;
- free (alloc);
+ if (alloc != NULL)
+ {
+ (*current)->name = name;
+ free (alloc);
+ }
}
else
bfd_print_symbol (cur_bfd, stdout, *current,
bfd_print_symbol_all);
printf ("\n");
}
+
current++;
}
printf ("\n\n");
section_name = NULL;
}
+ bfd_printf_vma (abfd, q->address);
+ if (q->howto == NULL)
+ printf (" *unknown* ");
+ else if (q->howto->name)
+ printf (" %-16s ", q->howto->name);
+ else
+ printf (" %-16d ", q->howto->type);
+
if (sym_name)
{
- bfd_printf_vma (abfd, q->address);
- if (q->howto->name)
- printf (" %-16s ", q->howto->name);
- else
- printf (" %-16d ", q->howto->type);
objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
}
else
{
if (section_name == NULL)
section_name = "*unknown*";
- bfd_printf_vma (abfd, q->address);
- printf (" %-16s [%s]",
- q->howto->name,
- section_name);
+ printf ("[%s]", section_name);
}
if (q->addend)
static void
adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
asection *section,
- void *dummy ATTRIBUTE_UNUSED)
+ void *arg)
{
- section->vma += adjust_section_vma;
- section->lma += adjust_section_vma;
+ if ((section->flags & SEC_DEBUGGING) == 0)
+ {
+ bfd_boolean *has_reloc_p = (bfd_boolean *) arg;
+ section->vma += adjust_section_vma;
+ if (*has_reloc_p)
+ section->lma += adjust_section_vma;
+ }
}
/* Dump selected contents of ABFD. */
the BFD information is a hack. However, we must do it, or
bfd_find_nearest_line will not do the right thing. */
if (adjust_section_vma != 0)
- bfd_map_over_sections (abfd, adjust_addresses, NULL);
+ {
+ bfd_boolean has_reloc = (abfd->flags & HAS_RELOC);
+ bfd_map_over_sections (abfd, adjust_addresses, &has_reloc);
+ }
if (! dump_debugging_tags)
printf (_("\n%s: file format %s\n"), bfd_get_filename (abfd),
if (dump_section_headers)
dump_headers (abfd);
- if (dump_symtab || dump_reloc_info || disassemble || dump_debugging)
+ if (dump_symtab
+ || dump_reloc_info
+ || disassemble
+ || dump_debugging
+ || dump_dwarf_section_info)
syms = slurp_symtab (abfd);
if (dump_dynamic_symtab || dump_dynamic_reloc_info
|| (disassemble && bfd_get_dynamic_symtab_upper_bound (abfd) > 0))
dump_symbols (abfd, FALSE);
if (dump_dynamic_symtab)
dump_symbols (abfd, TRUE);
+ if (dump_dwarf_section_info)
+ dump_dwarf (abfd);
if (dump_stab_section_info)
dump_stabs (abfd);
if (dump_reloc_info && ! disassemble)
{
void *dhandle;
- dhandle = read_debugging_info (abfd, syms, symcount);
+ dhandle = read_debugging_info (abfd, syms, symcount, TRUE);
if (dhandle != NULL)
{
- if (! print_debugging_info (stdout, dhandle, abfd, syms, demangle,
- dump_debugging_tags ? TRUE : FALSE))
+ if (!print_debugging_info (stdout, dhandle, abfd, syms,
+ bfd_demangle,
+ dump_debugging_tags ? TRUE : FALSE))
{
non_fatal (_("%s: printing debugging information failed"),
bfd_get_filename (abfd));
exit_status = 1;
}
}
+ /* PR 6483: If there was no STABS or IEEE debug
+ info in the file, try DWARF instead. */
+ else if (! dump_dwarf_section_info)
+ {
+ dump_dwarf (abfd);
+ }
}
if (syms)
bfd *arfile = NULL;
if (get_file_size (filename) < 1)
- return;
+ {
+ exit_status = 1;
+ return;
+ }
file = bfd_openr (filename, target);
if (file == NULL)
START_PROGRESS (program_name, 0);
+ expandargv (&argc, &argv);
+
bfd_init ();
set_default_bfd_target ();
- while ((c = getopt_long (argc, argv, "pib:m:M:VvCdDlfaHhrRtTxsSI:j:wE:zgeG",
+ while ((c = getopt_long (argc, argv,
+ "pib:m:M:VvCdDlfFaHhrRtTxsSI:j:wE:zgeGW::",
long_options, (int *) 0))
!= EOF)
{
if (disassembler_options)
/* Ignore potential memory leak for now. */
disassembler_options = concat (disassembler_options, ",",
- optarg, NULL);
+ optarg, (const char *) NULL);
else
disassembler_options = optarg;
break;
}
only [only_used++] = optarg;
break;
+ case 'F':
+ display_file_offsets = TRUE;
+ break;
case 'l':
with_line_numbers = TRUE;
break;
break;
case OPTION_START_ADDRESS:
start_address = parse_vma (optarg, "--start-address");
+ if ((stop_address != (bfd_vma) -1) && stop_address <= start_address)
+ fatal (_("error: the start address should be before the end address"));
break;
case OPTION_STOP_ADDRESS:
stop_address = parse_vma (optarg, "--stop-address");
+ if ((start_address != (bfd_vma) -1) && stop_address <= start_address)
+ fatal (_("error: the stop address should be after the start address"));
+ break;
+ case OPTION_PREFIX:
+ prefix = optarg;
+ prefix_length = strlen (prefix);
+ /* Remove an unnecessary trailing '/' */
+ while (IS_DIR_SEPARATOR (prefix[prefix_length - 1]))
+ prefix_length--;
+ break;
+ case OPTION_PREFIX_STRIP:
+ prefix_strip = atoi (optarg);
+ if (prefix_strip < 0)
+ fatal (_("error: prefix strip must be non-negative"));
break;
case 'E':
if (strcmp (optarg, "B") == 0)
do_demangle = TRUE;
seenflag = TRUE;
break;
+ case 'W':
+ dump_dwarf_section_info = TRUE;
+ seenflag = TRUE;
+ if (optarg)
+ dwarf_select_sections_by_letters (optarg);
+ else
+ dwarf_select_sections_all ();
+ break;
+ case OPTION_DWARF:
+ dump_dwarf_section_info = TRUE;
+ seenflag = TRUE;
+ if (optarg)
+ dwarf_select_sections_by_names (optarg);
+ else
+ dwarf_select_sections_all ();
+ break;
case 'G':
dump_stab_section_info = TRUE;
seenflag = TRUE;