Remove trailing white spaces in bfd
[deliverable/binutils-gdb.git] / bfd / coffgen.c
index 2508b5193345c74b77f5c420b5f49980495eb4a4..7d48ea9cf61e17e516f0c189641444f2b4329d0a 100644 (file)
@@ -91,7 +91,7 @@ make_a_section_from_file (bfd *abfd,
              don't know the length of the string table.  */
          strings += strindex;
          name = (char *) bfd_alloc (abfd,
-                                     (bfd_size_type) strlen (strings) + 1);
+                                     (bfd_size_type) strlen (strings) + 1 + 1);
          if (name == NULL)
            return FALSE;
          strcpy (name, strings);
@@ -102,7 +102,7 @@ make_a_section_from_file (bfd *abfd,
     {
       /* Assorted wastage to null-terminate the name, thanks AT&T! */
       name = (char *) bfd_alloc (abfd,
-                                 (bfd_size_type) sizeof (hdr->s_name) + 1);
+                                 (bfd_size_type) sizeof (hdr->s_name) + 1 + 1);
       if (name == NULL)
        return FALSE;
       strncpy (name, (char *) &hdr->s_name[0], sizeof (hdr->s_name));
@@ -146,6 +146,76 @@ make_a_section_from_file (bfd *abfd,
   if (hdr->s_scnptr != 0)
     return_section->flags |= SEC_HAS_CONTENTS;
 
+  /* Compress/decompress DWARF debug sections with names: .debug_* and
+     .zdebug_*, after the section flags is set.  */
+  if ((flags & SEC_DEBUGGING)
+      && ((name[1] == 'd' && name[6] == '_')
+         || (name[1] == 'z' && name[7] == '_')))
+    {
+      enum { nothing, compress, decompress } action = nothing;
+      char *new_name = NULL;
+
+      if (bfd_is_section_compressed (abfd, return_section))
+       {
+         /* Compressed section.  Check if we should decompress.  */
+         if ((abfd->flags & BFD_DECOMPRESS))
+           action = decompress;
+       }
+      else if (!bfd_is_section_compressed (abfd, return_section))
+       {
+         /* Normal section.  Check if we should compress.  */
+         if ((abfd->flags & BFD_COMPRESS) && return_section->size != 0)
+           action = compress;
+       }
+
+      switch (action)
+       {
+       case nothing:
+         break;
+       case compress:
+         if (!bfd_init_section_compress_status (abfd, return_section))
+           {
+             (*_bfd_error_handler)
+               (_("%B: unable to initialize compress status for section %s"),
+                abfd, name);
+             return FALSE;
+           }
+         if (name[1] != 'z')
+           {
+             unsigned int len = strlen (name);
+
+             new_name = bfd_alloc (abfd, len + 2);
+             if (new_name == NULL)
+               return FALSE;
+             new_name[0] = '.';
+             new_name[1] = 'z';
+             memcpy (new_name + 2, name + 1, len);
+           }
+         break;
+       case decompress:
+         if (!bfd_init_section_decompress_status (abfd, return_section))
+           {
+             (*_bfd_error_handler)
+               (_("%B: unable to initialize decompress status for section %s"),
+                abfd, name);
+             return FALSE;
+           }
+         if (name[1] == 'z')
+           {
+             unsigned int len = strlen (name);
+
+             new_name = bfd_alloc (abfd, len);
+             if (new_name == NULL)
+               return FALSE;
+             new_name[0] = '.';
+             memcpy (new_name + 1, name + 2, len - 1);
+           }
+         break;
+       }
+      if (new_name != NULL)
+       bfd_rename_section (abfd, return_section, new_name);
+    }
+
   return result;
 }
 
@@ -577,7 +647,7 @@ fixup_symbol_value (bfd *abfd,
                    struct internal_syment *syment)
 {
   /* Normalize the symbol flags.  */
-  if (coff_symbol_ptr->symbol.section 
+  if (coff_symbol_ptr->symbol.section
       && bfd_is_com_section (coff_symbol_ptr->symbol.section))
     {
       /* A common symbol is undefined with a value.  */
@@ -983,23 +1053,36 @@ coff_write_symbol (bfd *abfd,
    file originally.  This symbol may have been created by the linker,
    or we may be linking a non COFF file to a COFF file.  */
 
-static bfd_boolean
+bfd_boolean
 coff_write_alien_symbol (bfd *abfd,
                         asymbol *symbol,
+                        struct internal_syment *isym,
                         bfd_vma *written,
                         bfd_size_type *string_size_p,
                         asection **debug_string_section_p,
                         bfd_size_type *debug_string_size_p)
 {
   combined_entry_type *native;
-  combined_entry_type dummy;
+  combined_entry_type dummy[2];
   asection *output_section = symbol->section->output_section
                               ? symbol->section->output_section
                               : symbol->section;
+  struct bfd_link_info *link_info = coff_data (abfd)->link_info;
+  bfd_boolean ret;
 
-  native = &dummy;
+  if ((!link_info || link_info->strip_discarded)
+      && !bfd_is_abs_section (symbol->section)
+      && symbol->section->output_section == bfd_abs_section_ptr)
+    {
+      symbol->name = "";
+      if (isym != NULL)
+        memset (isym, 0, sizeof(*isym));
+      return TRUE;
+    }
+  native = dummy;
   native->u.syment.n_type = T_NULL;
   native->u.syment.n_flags = 0;
+  native->u.syment.n_numaux = 0;
   if (bfd_is_und_section (symbol->section))
     {
       native->u.syment.n_scnum = N_UNDEF;
@@ -1010,6 +1093,11 @@ coff_write_alien_symbol (bfd *abfd,
       native->u.syment.n_scnum = N_UNDEF;
       native->u.syment.n_value = symbol->value;
     }
+  else if (symbol->flags & BSF_FILE)
+    {
+      native->u.syment.n_scnum = N_DEBUG;
+      native->u.syment.n_numaux = 1;
+    }
   else if (symbol->flags & BSF_DEBUGGING)
     {
       /* There isn't much point to writing out a debugging symbol
@@ -1017,6 +1105,8 @@ coff_write_alien_symbol (bfd *abfd,
          format.  So, we just ignore them.  We must clobber the symbol
          name to keep it from being put in the string table.  */
       symbol->name = "";
+      if (isym != NULL)
+        memset (isym, 0, sizeof(*isym));
       return TRUE;
     }
   else
@@ -1037,16 +1127,20 @@ coff_write_alien_symbol (bfd *abfd,
     }
 
   native->u.syment.n_type = 0;
-  if (symbol->flags & BSF_LOCAL)
+  if (symbol->flags & BSF_FILE)
+    native->u.syment.n_sclass = C_FILE;
+  else if (symbol->flags & BSF_LOCAL)
     native->u.syment.n_sclass = C_STAT;
   else if (symbol->flags & BSF_WEAK)
     native->u.syment.n_sclass = obj_pe (abfd) ? C_NT_WEAK : C_WEAKEXT;
   else
     native->u.syment.n_sclass = C_EXT;
-  native->u.syment.n_numaux = 0;
 
-  return coff_write_symbol (abfd, symbol, native, written, string_size_p,
-                           debug_string_section_p, debug_string_size_p);
+  ret = coff_write_symbol (abfd, symbol, native, written, string_size_p,
+                          debug_string_section_p, debug_string_size_p);
+  if (isym != NULL)
+    *isym = native->u.syment;
+  return ret;
 }
 
 /* Write a native symbol to a COFF file.  */
@@ -1061,6 +1155,15 @@ coff_write_native_symbol (bfd *abfd,
 {
   combined_entry_type *native = symbol->native;
   alent *lineno = symbol->lineno;
+  struct bfd_link_info *link_info = coff_data (abfd)->link_info;
+
+  if ((!link_info || link_info->strip_discarded)
+      && !bfd_is_abs_section (symbol->symbol.section)
+      && symbol->symbol.section->output_section == bfd_abs_section_ptr)
+    {
+      symbol->symbol.name = "";
+      return TRUE;
+    }
 
   /* If this symbol has an associated line number, we must store the
      symbol index in the line number field.  We also tag the auxent to
@@ -1153,8 +1256,8 @@ coff_write_symbols (bfd *abfd)
       if (c_symbol == (coff_symbol_type *) NULL
          || c_symbol->native == (combined_entry_type *) NULL)
        {
-         if (!coff_write_alien_symbol (abfd, symbol, &written, &string_size,
-                                       &debug_string_section,
+         if (!coff_write_alien_symbol (abfd, symbol, NULL, &written,
+                                       &string_size, &debug_string_section,
                                        &debug_string_size))
            return FALSE;
        }
@@ -1416,7 +1519,7 @@ coff_pointerize_aux (bfd *abfd,
   /* Otherwise patch up.  */
 #define N_TMASK coff_data  (abfd)->local_n_tmask
 #define N_BTSHFT coff_data (abfd)->local_n_btshft
-  
+
   if ((ISFCN (type) || ISTAG (n_sclass) || n_sclass == C_BLOCK
        || n_sclass == C_FCN)
       && auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l > 0)
@@ -1839,7 +1942,7 @@ coff_bfd_make_debug_symbol (bfd *abfd,
   new_symbol->lineno = NULL;
   new_symbol->done_lineno = FALSE;
   new_symbol->symbol.the_bfd = abfd;
-  
+
   return & new_symbol->symbol;
 }
 
@@ -2120,7 +2223,7 @@ coff_find_nearest_line_with_names (bfd *abfd,
   if (_bfd_dwarf2_find_nearest_line (abfd, debug_sections,
                                      section, symbols, offset,
                                     filename_ptr, functionname_ptr,
-                                    line_ptr, 0,
+                                    line_ptr, NULL, 0,
                                     &coff_data(abfd)->dwarf2_find_line_info))
     return TRUE;
 
@@ -2315,6 +2418,24 @@ coff_find_nearest_line (bfd *abfd,
                                             line_ptr);
 }
 
+bfd_boolean
+coff_find_nearest_line_discriminator (bfd *abfd,
+                                     asection *section,
+                                     asymbol **symbols,
+                                     bfd_vma offset,
+                                     const char **filename_ptr,
+                                     const char **functionname_ptr,
+                                     unsigned int *line_ptr,
+                                     unsigned int *discriminator)
+{
+  *discriminator = 0;
+  return coff_find_nearest_line_with_names (abfd, dwarf_debug_sections,
+                                            section, symbols, offset,
+                                            filename_ptr, functionname_ptr,
+                                            line_ptr);
+}
+
+
 bfd_boolean
 coff_find_inliner_info (bfd *abfd,
                        const char **filename_ptr,
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