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(is_arm_mapping_symbol_name): New function - return true when a symbol name

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matches the requirements for an ARM mapping symbol name.
(arm_elf_find_function): New function based on elf_find_function in elf.c but
 skipping ARM mapping symbols and including thumb function symbols.
(elf32_arm_find_nearest_line): Use arm_elf_find_function.
(elf32_arm_output_symbol_hook): Use is_arm_mapping_symbol_name.
This commit is contained in:
Nick Clifton 2004-08-17 08:12:26 +00:00
parent 2441e016ac
commit 0367ecfb78
2 changed files with 95 additions and 47 deletions
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11
bfd/ChangeLog
View File

@ -1,3 +1,14 @@
2004-08-17 Nick Clifton <nickc@redhat.com>
* (is_arm_mapping_symbol_name): New function - return true
when a symbol name matches the requirements for an ARM mapping
symbol name.
(arm_elf_find_function): New function based on
elf_find_function in elf.c but skipping ARM mapping symbols
and including thumb function symbols.
(elf32_arm_find_nearest_line): Use arm_elf_find_function.
(elf32_arm_output_symbol_hook): Use is_arm_mapping_symbol_name.
2004-08-17 Alan Modra <amodra@bigpond.net.au>
* elf64-ppc.c (ppc64_elf_branch_reloc): New function.

131
bfd/elf32-arm.h
View File

@ -2993,46 +2993,31 @@ elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info,
return TRUE;
}
/* Find the nearest line to a particular section and offset, for error
reporting. This code is a duplicate of the code in elf.c, except
that it also accepts STT_ARM_TFUNC as a symbol that names a function. */
static bfd_boolean
is_arm_mapping_symbol_name (const char * name)
{
return (name != NULL)
&& (name[0] == '$')
&& ((name[1] == 'a') || (name[1] == 't') || (name[1] == 'd'))
&& (name[2] == 0);
}
/* This is a copy of elf_find_function() from elf.c except that
ARM mapping symbols are ignored when looking for function names
and STT_ARM_TFUNC is considered to a function type. */
static bfd_boolean
elf32_arm_find_nearest_line (bfd * abfd,
asection * section,
asymbol ** symbols,
bfd_vma offset,
const char ** filename_ptr,
const char ** functionname_ptr,
unsigned int * line_ptr)
arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED,
asection * section,
asymbol ** symbols,
bfd_vma offset,
const char ** filename_ptr,
const char ** functionname_ptr)
{
bfd_boolean found;
const char *filename;
asymbol *func;
bfd_vma low_func;
asymbol **p;
if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
filename_ptr, functionname_ptr,
line_ptr, 0,
&elf_tdata (abfd)->dwarf2_find_line_info))
return TRUE;
if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
&found, filename_ptr,
functionname_ptr, line_ptr,
&elf_tdata (abfd)->line_info))
return FALSE;
if (found)
return TRUE;
if (symbols == NULL)
return FALSE;
filename = NULL;
func = NULL;
low_func = 0;
const char * filename = NULL;
asymbol * func = NULL;
bfd_vma low_func = 0;
asymbol ** p;
for (p = symbols; *p != NULL; p++)
{
@ -3050,9 +3035,14 @@ elf32_arm_find_nearest_line (bfd * abfd,
case STT_FILE:
filename = bfd_asymbol_name (&q->symbol);
break;
case STT_NOTYPE:
case STT_FUNC:
case STT_ARM_TFUNC:
/* Skip $a and $t symbols. */
if ((q->symbol.flags & BSF_LOCAL)
&& is_arm_mapping_symbol_name (q->symbol.name))
continue;
/* Fall through. */
case STT_NOTYPE:
if (q->symbol.section == section
&& q->symbol.value >= low_func
&& q->symbol.value <= offset)
@ -3067,11 +3057,63 @@ elf32_arm_find_nearest_line (bfd * abfd,
if (func == NULL)
return FALSE;
*filename_ptr = filename;
*functionname_ptr = bfd_asymbol_name (func);
*line_ptr = 0;
if (filename_ptr)
*filename_ptr = filename;
if (functionname_ptr)
*functionname_ptr = bfd_asymbol_name (func);
return TRUE;
}
/* Find the nearest line to a particular section and offset, for error
reporting. This code is a duplicate of the code in elf.c, except
that it uses arm_elf_find_function. */
static bfd_boolean
elf32_arm_find_nearest_line (bfd * abfd,
asection * section,
asymbol ** symbols,
bfd_vma offset,
const char ** filename_ptr,
const char ** functionname_ptr,
unsigned int * line_ptr)
{
bfd_boolean found = FALSE;
/* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
filename_ptr, functionname_ptr,
line_ptr, 0,
& elf_tdata (abfd)->dwarf2_find_line_info))
{
if (!*functionname_ptr)
arm_elf_find_function (abfd, section, symbols, offset,
*filename_ptr ? NULL : filename_ptr,
functionname_ptr);
return TRUE;
}
if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
& found, filename_ptr,
functionname_ptr, line_ptr,
& elf_tdata (abfd)->line_info))
return FALSE;
if (found && (*functionname_ptr || *line_ptr))
return TRUE;
if (symbols == NULL)
return FALSE;
if (! arm_elf_find_function (abfd, section, symbols, offset,
filename_ptr, functionname_ptr))
return FALSE;
*line_ptr = 0;
return TRUE;
}
/* Adjust a symbol defined by a dynamic object and referenced by a
@ -3987,11 +4029,7 @@ elf32_arm_output_symbol_hook (struct bfd_link_info *info,
return TRUE;
/* We only want mapping symbols. */
if (name == NULL
|| name[0] != '$'
|| (name[1] != 'a'
&& name[1] != 't'
&& name[1] != 'd'))
if (! is_arm_mapping_symbol_name (name))
return TRUE;
mapcount = ++(elf32_arm_section_data (input_sec)->mapcount);
@ -4152,4 +4190,3 @@ elf32_arm_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, asection *sec,
#define elf_backend_got_header_size 12
#include "elf32-target.h"