X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=bfd%2Fsyms.c;h=5a22c0b38b8b325ebe1a9eeae7f9318c2abc7c8c;hb=f4e0d9f40b21fb42bbf7da07917683fb1cc16e8e;hp=7044e6e07f66ef6952fbaf6b8d7f9db03e806669;hpb=aa820537ead0135a7c38c619039dce8a6fc74ed1;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/syms.c b/bfd/syms.c index 7044e6e07f..5a22c0b38b 100644 --- a/bfd/syms.c +++ b/bfd/syms.c @@ -1,7 +1,5 @@ /* Generic symbol-table support for the BFD library. - Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, - 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009 - Free Software Foundation, Inc. + Copyright (C) 1990-2016 Free Software Foundation, Inc. Written by Cygnus Support. This file is part of BFD, the Binary File Descriptor library. @@ -77,7 +75,7 @@ SUBSECTION | | if (storage_needed == 0) | return; -| +| | symbol_table = xmalloc (storage_needed); | ... | number_of_symbols = @@ -107,6 +105,7 @@ SUBSECTION which has been created using <>. Here is an example showing the creation of a symbol table with only one element: +| #include "sysdep.h" | #include "bfd.h" | int main (void) | { @@ -220,8 +219,7 @@ CODE_FRAGMENT .#define BSF_EXPORT BSF_GLOBAL {* No real difference. *} . . {* A normal C symbol would be one of: -. <>, <>, <> or -. <>. *} +. <>, <> or <>. *} . . {* The symbol is a debugging record. The value has an arbitrary . meaning, unless BSF_DEBUGGING_RELOC is also set. *} @@ -233,7 +231,9 @@ CODE_FRAGMENT . . {* Used by the linker. *} .#define BSF_KEEP (1 << 5) -.#define BSF_KEEP_G (1 << 6) +. +. {* An ELF common symbol. *} +.#define BSF_ELF_COMMON (1 << 6) . . {* A weak global symbol, overridable without warnings by . a regular global symbol of the same name. *} @@ -474,7 +474,7 @@ DESCRIPTION void bfd_print_symbol_vandf (bfd *abfd, void *arg, asymbol *symbol) { - FILE *file = arg; + FILE *file = (FILE *) arg; flagword type = symbol->flags; @@ -811,7 +811,7 @@ _bfd_generic_read_minisymbols (bfd *abfd, if (storage == 0) return 0; - syms = bfd_malloc (storage); + syms = (asymbol **) bfd_malloc (storage); if (syms == NULL) goto error_return; @@ -824,6 +824,7 @@ _bfd_generic_read_minisymbols (bfd *abfd, *minisymsp = syms; *sizep = sizeof (asymbol *); + return symcount; error_return: @@ -878,8 +879,8 @@ struct indexentry static int cmpindexentry (const void *a, const void *b) { - const struct indexentry *contestantA = a; - const struct indexentry *contestantB = b; + const struct indexentry *contestantA = (const struct indexentry *) a; + const struct indexentry *contestantB = (const struct indexentry *) b; if (contestantA->val < contestantB->val) return -1; @@ -933,12 +934,11 @@ _bfd_stab_section_find_nearest_line (bfd *abfd, struct stab_find_info *info; bfd_size_type stabsize, strsize; bfd_byte *stab, *str; - bfd_byte *last_stab = NULL; + bfd_byte *nul_fun, *nul_str; bfd_size_type stroff; struct indexentry *indexentry; char *file_name; char *directory_name; - int saw_fun; bfd_boolean saw_line, saw_func; *pfound = FALSE; @@ -966,7 +966,7 @@ _bfd_stab_section_find_nearest_line (bfd *abfd, #define VALOFF (8) #define STABSIZE (12) - info = *pinfo; + info = (struct stab_find_info *) *pinfo; if (info != NULL) { if (info->stabsec == NULL || info->strsec == NULL) @@ -987,11 +987,10 @@ _bfd_stab_section_find_nearest_line (bfd *abfd, long reloc_size, reloc_count; arelent **reloc_vector; int i; - char *name; char *function_name; bfd_size_type amt = sizeof *info; - info = bfd_zalloc (abfd, amt); + info = (struct stab_find_info *) bfd_zalloc (abfd, amt); if (info == NULL) return FALSE; @@ -1007,7 +1006,7 @@ _bfd_stab_section_find_nearest_line (bfd *abfd, /* Try SOM section names. */ info->stabsec = bfd_get_section_by_name (abfd, "$GDB_SYMBOLS$"); info->strsec = bfd_get_section_by_name (abfd, "$GDB_STRINGS$"); - + if (info->stabsec == NULL || info->strsec == NULL) { /* No stabs debugging information. Set *pinfo so that we @@ -1020,12 +1019,13 @@ _bfd_stab_section_find_nearest_line (bfd *abfd, stabsize = (info->stabsec->rawsize ? info->stabsec->rawsize : info->stabsec->size); + stabsize = (stabsize / STABSIZE) * STABSIZE; strsize = (info->strsec->rawsize ? info->strsec->rawsize : info->strsec->size); - info->stabs = bfd_alloc (abfd, stabsize); - info->strs = bfd_alloc (abfd, strsize); + info->stabs = (bfd_byte *) bfd_alloc (abfd, stabsize); + info->strs = (bfd_byte *) bfd_alloc (abfd, strsize); if (info->stabs == NULL || info->strs == NULL) return FALSE; @@ -1042,7 +1042,7 @@ _bfd_stab_section_find_nearest_line (bfd *abfd, reloc_size = bfd_get_reloc_upper_bound (abfd, info->stabsec); if (reloc_size < 0) return FALSE; - reloc_vector = bfd_malloc (reloc_size); + reloc_vector = (arelent **) bfd_malloc (reloc_size); if (reloc_vector == NULL && reloc_size != 0) return FALSE; reloc_count = bfd_canonicalize_reloc (abfd, info->stabsec, reloc_vector, @@ -1083,11 +1083,13 @@ _bfd_stab_section_find_nearest_line (bfd *abfd, return FALSE; } - val = bfd_get_32 (abfd, info->stabs + r->address); + val = bfd_get_32 (abfd, info->stabs + + r->address * bfd_octets_per_byte (abfd)); val &= r->howto->src_mask; sym = *r->sym_ptr_ptr; val += sym->value + sym->section->vma + r->addend; - bfd_put_32 (abfd, (bfd_vma) val, info->stabs + r->address); + bfd_put_32 (abfd, (bfd_vma) val, info->stabs + + r->address * bfd_octets_per_byte (abfd)); } } @@ -1101,36 +1103,37 @@ _bfd_stab_section_find_nearest_line (bfd *abfd, table. */ info->indextablesize = 0; - saw_fun = 1; + nul_fun = NULL; for (stab = info->stabs; stab < info->stabs + stabsize; stab += STABSIZE) { if (stab[TYPEOFF] == (bfd_byte) N_SO) { - /* N_SO with null name indicates EOF */ - if (bfd_get_32 (abfd, stab + STRDXOFF) == 0) - continue; - /* if we did not see a function def, leave space for one. */ - if (saw_fun == 0) + if (nul_fun != NULL) ++info->indextablesize; - saw_fun = 0; - - /* two N_SO's in a row is a filename and directory. Skip */ - if (stab + STABSIZE < info->stabs + stabsize - && *(stab + STABSIZE + TYPEOFF) == (bfd_byte) N_SO) + /* N_SO with null name indicates EOF */ + if (bfd_get_32 (abfd, stab + STRDXOFF) == 0) + nul_fun = NULL; + else { - stab += STABSIZE; + nul_fun = stab; + + /* two N_SO's in a row is a filename and directory. Skip */ + if (stab + STABSIZE + TYPEOFF < info->stabs + stabsize + && *(stab + STABSIZE + TYPEOFF) == (bfd_byte) N_SO) + stab += STABSIZE; } } - else if (stab[TYPEOFF] == (bfd_byte) N_FUN) + else if (stab[TYPEOFF] == (bfd_byte) N_FUN + && bfd_get_32 (abfd, stab + STRDXOFF) != 0) { - saw_fun = 1; + nul_fun = NULL; ++info->indextablesize; } } - if (saw_fun == 0) + if (nul_fun != NULL) ++info->indextablesize; if (info->indextablesize == 0) @@ -1139,15 +1142,16 @@ _bfd_stab_section_find_nearest_line (bfd *abfd, amt = info->indextablesize; amt *= sizeof (struct indexentry); - info->indextable = bfd_alloc (abfd, amt); + info->indextable = (struct indexentry *) bfd_alloc (abfd, amt); if (info->indextable == NULL) return FALSE; file_name = NULL; directory_name = NULL; - saw_fun = 1; + nul_fun = NULL; + stroff = 0; - for (i = 0, stroff = 0, stab = info->stabs, str = info->strs; + for (i = 0, stab = info->stabs, nul_str = str = info->strs; i < info->indextablesize && stab < info->stabs + stabsize; stab += STABSIZE) { @@ -1169,34 +1173,32 @@ _bfd_stab_section_find_nearest_line (bfd *abfd, Note that a N_SO without a file name is an EOF and there could be 2 N_SO following it with the new filename and directory. */ - if (saw_fun == 0) + if (nul_fun != NULL) { - info->indextable[i].val = bfd_get_32 (abfd, last_stab + VALOFF); - info->indextable[i].stab = last_stab; - info->indextable[i].str = str; + info->indextable[i].val = bfd_get_32 (abfd, nul_fun + VALOFF); + info->indextable[i].stab = nul_fun; + info->indextable[i].str = nul_str; info->indextable[i].directory_name = directory_name; info->indextable[i].file_name = file_name; info->indextable[i].function_name = NULL; ++i; } - saw_fun = 0; + directory_name = NULL; file_name = (char *) str + bfd_get_32 (abfd, stab + STRDXOFF); - if (*file_name == '\0') + if (file_name == (char *) str) { - directory_name = NULL; file_name = NULL; - saw_fun = 1; + nul_fun = NULL; } else { - last_stab = stab; - if (stab + STABSIZE >= info->stabs + stabsize - || *(stab + STABSIZE + TYPEOFF) != (bfd_byte) N_SO) - { - directory_name = NULL; - } - else + nul_fun = stab; + nul_str = str; + if (file_name >= (char *) info->strs + strsize || file_name < (char *) str) + file_name = NULL; + if (stab + STABSIZE + TYPEOFF < info->stabs + stabsize + && *(stab + STABSIZE + TYPEOFF) == (bfd_byte) N_SO) { /* Two consecutive N_SOs are a directory and a file name. */ @@ -1204,6 +1206,8 @@ _bfd_stab_section_find_nearest_line (bfd *abfd, directory_name = file_name; file_name = ((char *) str + bfd_get_32 (abfd, stab + STRDXOFF)); + if (file_name >= (char *) info->strs + strsize || file_name < (char *) str) + file_name = NULL; } } break; @@ -1211,21 +1215,21 @@ _bfd_stab_section_find_nearest_line (bfd *abfd, case N_SOL: /* The name of an include file. */ file_name = (char *) str + bfd_get_32 (abfd, stab + STRDXOFF); + /* PR 17512: file: 0c680a1f. */ + /* PR 17512: file: 5da8aec4. */ + if (file_name >= (char *) info->strs + strsize || file_name < (char *) str) + file_name = NULL; break; case N_FUN: /* A function name. */ - saw_fun = 1; - name = (char *) str + bfd_get_32 (abfd, stab + STRDXOFF); - - if (*name == '\0') - name = NULL; - - function_name = name; - - if (name == NULL) + function_name = (char *) str + bfd_get_32 (abfd, stab + STRDXOFF); + if (function_name == (char *) str) continue; + if (function_name >= (char *) info->strs + strsize) + function_name = NULL; + nul_fun = NULL; info->indextable[i].val = bfd_get_32 (abfd, stab + VALOFF); info->indextable[i].stab = stab; info->indextable[i].str = str; @@ -1237,11 +1241,11 @@ _bfd_stab_section_find_nearest_line (bfd *abfd, } } - if (saw_fun == 0) + if (nul_fun != NULL) { - info->indextable[i].val = bfd_get_32 (abfd, last_stab + VALOFF); - info->indextable[i].stab = last_stab; - info->indextable[i].str = str; + info->indextable[i].val = bfd_get_32 (abfd, nul_fun + VALOFF); + info->indextable[i].stab = nul_fun; + info->indextable[i].str = nul_str; info->indextable[i].directory_name = directory_name; info->indextable[i].file_name = file_name; info->indextable[i].function_name = NULL; @@ -1331,6 +1335,8 @@ _bfd_stab_section_find_nearest_line (bfd *abfd, if (val <= offset) { file_name = (char *) str + bfd_get_32 (abfd, stab + STRDXOFF); + if (file_name >= (char *) info->strs + strsize || file_name < (char *) str) + file_name = NULL; *pline = 0; } break; @@ -1386,8 +1392,8 @@ _bfd_stab_section_find_nearest_line (bfd *abfd, dirlen = strlen (directory_name); if (info->filename == NULL - || strncmp (info->filename, directory_name, dirlen) != 0 - || strcmp (info->filename + dirlen, file_name) != 0) + || filename_ncmp (info->filename, directory_name, dirlen) != 0 + || filename_cmp (info->filename + dirlen, file_name) != 0) { size_t len; @@ -1395,7 +1401,7 @@ _bfd_stab_section_find_nearest_line (bfd *abfd, apps keep a copy of a previously returned file name pointer. */ len = strlen (file_name) + 1; - info->filename = bfd_alloc (abfd, dirlen + len); + info->filename = (char *) bfd_alloc (abfd, dirlen + len); if (info->filename == NULL) return FALSE; memcpy (info->filename, directory_name, dirlen);