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Delete relocations associatesd with deleted exidx entries.
[deliverable/binutils-gdb.git] / bfd / syms.c
diff --git a/bfd/syms.c b/bfd/syms.c
index bf5a48894ca417620c16a652c19de4ed61cf3153..5a22c0b38b8b325ebe1a9eeae7f9318c2abc7c8c 100644 (file)
--- a/bfd/syms.c
+++ b/bfd/syms.c
@@ -1,7 +1,5 @@
 /* Generic symbol-table support for the BFD library.
 /* 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, 2012
-   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.
    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;
 |
 |        if (storage_needed == 0)
 |          return;
-|        
+|
 |        symbol_table = xmalloc (storage_needed);
 |          ...
 |        number_of_symbols =
 |        symbol_table = xmalloc (storage_needed);
 |          ...
 |        number_of_symbols =
@@ -221,8 +219,7 @@ CODE_FRAGMENT
 .#define BSF_EXPORT    BSF_GLOBAL {* No real difference.  *}
 .
 .  {* A normal C symbol would be one of:
 .#define BSF_EXPORT    BSF_GLOBAL {* No real difference.  *}
 .
 .  {* A normal C symbol would be one of:
-.     <<BSF_LOCAL>>, <<BSF_COMMON>>,  <<BSF_UNDEFINED>> or
-.     <<BSF_GLOBAL>>.  *}
+.     <<BSF_LOCAL>>, <<BSF_UNDEFINED>> or <<BSF_GLOBAL>>.  *}
 .
 .  {* The symbol is a debugging record. The value has an arbitrary
 .     meaning, unless BSF_DEBUGGING_RELOC is also set.  *}
 .
 .  {* The symbol is a debugging record. The value has an arbitrary
 .     meaning, unless BSF_DEBUGGING_RELOC is also set.  *}
@@ -234,7 +231,9 @@ CODE_FRAGMENT
 .
 .  {* Used by the linker.  *}
 .#define BSF_KEEP              (1 << 5)
 .
 .  {* 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.  *}
 .
 .  {* A weak global symbol, overridable without warnings by
 .     a regular global symbol of the same name.  *}
@@ -825,6 +824,7 @@ _bfd_generic_read_minisymbols (bfd *abfd,
 
   *minisymsp = syms;
   *sizep = sizeof (asymbol *);
 
   *minisymsp = syms;
   *sizep = sizeof (asymbol *);
+
   return symcount;
 
  error_return:
   return symcount;
 
  error_return:
@@ -934,12 +934,11 @@ _bfd_stab_section_find_nearest_line (bfd *abfd,
   struct stab_find_info *info;
   bfd_size_type stabsize, strsize;
   bfd_byte *stab, *str;
   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;
   bfd_size_type stroff;
   struct indexentry *indexentry;
   char *file_name;
   char *directory_name;
-  int saw_fun;
   bfd_boolean saw_line, saw_func;
 
   *pfound = FALSE;
   bfd_boolean saw_line, saw_func;
 
   *pfound = FALSE;
@@ -988,7 +987,6 @@ _bfd_stab_section_find_nearest_line (bfd *abfd,
       long reloc_size, reloc_count;
       arelent **reloc_vector;
       int i;
       long reloc_size, reloc_count;
       arelent **reloc_vector;
       int i;
-      char *name;
       char *function_name;
       bfd_size_type amt = sizeof *info;
 
       char *function_name;
       bfd_size_type amt = sizeof *info;
 
@@ -1008,7 +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, "$GDB_STRINGS$");
          /* 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
          if (info->stabsec == NULL || info->strsec == NULL)
            {
              /* No stabs debugging information.  Set *pinfo so that we
@@ -1021,6 +1019,7 @@ _bfd_stab_section_find_nearest_line (bfd *abfd,
       stabsize = (info->stabsec->rawsize
                  ? info->stabsec->rawsize
                  : info->stabsec->size);
       stabsize = (info->stabsec->rawsize
                  ? info->stabsec->rawsize
                  : info->stabsec->size);
+      stabsize = (stabsize / STABSIZE) * STABSIZE;
       strsize = (info->strsec->rawsize
                 ? info->strsec->rawsize
                 : info->strsec->size);
       strsize = (info->strsec->rawsize
                 ? info->strsec->rawsize
                 : info->strsec->size);
@@ -1084,11 +1083,13 @@ _bfd_stab_section_find_nearest_line (bfd *abfd,
                  return FALSE;
                }
 
                  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;
              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));
            }
        }
 
            }
        }
 
@@ -1102,36 +1103,37 @@ _bfd_stab_section_find_nearest_line (bfd *abfd,
         table.  */
 
       info->indextablesize = 0;
         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)
            {
       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 we did not see a function def, leave space for one.  */
-             if (saw_fun == 0)
+             if (nul_fun != NULL)
                ++info->indextablesize;
 
                ++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;
            }
        }
 
              ++info->indextablesize;
            }
        }
 
-      if (saw_fun == 0)
+      if (nul_fun != NULL)
        ++info->indextablesize;
 
       if (info->indextablesize == 0)
        ++info->indextablesize;
 
       if (info->indextablesize == 0)
@@ -1146,9 +1148,10 @@ _bfd_stab_section_find_nearest_line (bfd *abfd,
 
       file_name = NULL;
       directory_name = NULL;
 
       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)
        {
           i < info->indextablesize && stab < info->stabs + stabsize;
           stab += STABSIZE)
        {
@@ -1170,34 +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.  */
                 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;
                }
                  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);
              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;
                  file_name = NULL;
-                 saw_fun = 1;
+                 nul_fun = NULL;
                }
              else
                {
                }
              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.  */
                    {
                      /* Two consecutive N_SOs are a directory and a
                         file name.  */
@@ -1205,6 +1206,8 @@ _bfd_stab_section_find_nearest_line (bfd *abfd,
                      directory_name = file_name;
                      file_name = ((char *) str
                                   + bfd_get_32 (abfd, stab + STRDXOFF));
                      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;
                    }
                }
              break;
@@ -1212,21 +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);
            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.  */
              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;
                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;
              info->indextable[i].val = bfd_get_32 (abfd, stab + VALOFF);
              info->indextable[i].stab = stab;
              info->indextable[i].str = str;
@@ -1238,11 +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;
          info->indextable[i].directory_name = directory_name;
          info->indextable[i].file_name = file_name;
          info->indextable[i].function_name = NULL;
@@ -1332,6 +1335,8 @@ _bfd_stab_section_find_nearest_line (bfd *abfd,
          if (val <= offset)
            {
              file_name = (char *) str + bfd_get_32 (abfd, stab + STRDXOFF);
          if (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;
              *pline = 0;
            }
          break;
GDB Binutils - Deliverables
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