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authorTristan Gingold <gingold@adacore.com>2011-09-30 10:39:45 +0000
committerTristan Gingold <gingold@adacore.com>2011-09-30 10:39:45 +0000
commitfc28f9aa231c8f3386e1c9bdb448d9cdd9cae1a9 (patch)
treed1cb8ea7d3d4aea609cdbd1dd1d509b2ecb52b2a /bfd/dwarf2.c
parent9852805258de4c870df1f723bf22f21b41ebd6a7 (diff)
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2011-09-30 Tristan Gingold <gingold@adacore.com>
* dwarf2.c (struct dwarf2_debug): Add field debug_sections. (read_section): Add sec argument. Adjust the code to get section names from it. (read_indirect_string): Adjust call to read_section. (read_abbrevs): Ditto. (decode_line_info): Ditto. (read_debug_ranges): Ditto. (DWARF2_DEBUG_INFO, DWARF2_COMPRESSED_DEBUG_INFO): Remove. (find_debug_info): Add debug_sections parameter. Use it instead the above macros. (place_sections): Get section names from stash. (find_line): Add debug_sections argument. Initialize debug_sections field of stash from it. Adjust calls to find_debug_info. (_bfd_dwarf2_find_nearest_line): Add debug_sections argument. Adjust call to find_line. (_bfd_dwarf2_find_line): Adjust call to find_line. * libcoff-in.h (struct dwarf_debug_section): New declaration. (coff_find_nearest_line_with_names): Likewise. * libcoff.h: Regenerate. * libbfd-in.h (struct dwarf_debug_section): Move declaration. (dwarf_debug_sections): Likewise. (_bfd_dwarf2_find_nearest_line): Add debug_sections argument. * libbfd.h: Regenerate. * elf.c (_bfd_elf_find_nearest_line): Adjust call to _bfd_dwarf2_find_nearest_line. * elfxx-mips.c (_bfd_mips_elf_find_nearest_line): Ditto. * elf64-alpha.c (elf64_alpha_find_nearest_line): Ditto. * elf32-arm.c (elf32_arm_find_nearest_line): Ditto. * coffgen.c (coff_find_nearest_line_with_names): New function. (coff_find_nearest_line): Calls coff_find_nearest_line_with_names. * coff-rs6000.c (xcoff_debug_sections): New constant. (xcoff_find_nearest_line): New function. (rs6000coff_vec): Use xcoff_find_nearest_line. (pmac_xcoff_vec): Ditto.
Diffstat (limited to 'bfd/dwarf2.c')
-rw-r--r--bfd/dwarf2.c86
1 files changed, 54 insertions, 32 deletions
diff --git a/bfd/dwarf2.c b/bfd/dwarf2.c
index 3cd2f7d..577f278 100644
--- a/bfd/dwarf2.c
+++ b/bfd/dwarf2.c
@@ -90,6 +90,9 @@ struct dwarf2_debug
/* Last comp unit in list above. */
struct comp_unit *last_comp_unit;
+ /* Names of the debug sections. */
+ const struct dwarf_debug_section *debug_sections;
+
/* The next unread compilation unit within the .debug_info section.
Zero indicates that the .debug_info section has not been loaded
into a buffer yet. */
@@ -469,14 +472,14 @@ lookup_info_hash_table (struct info_hash_table *hash_table, const char *key)
static bfd_boolean
read_section (bfd * abfd,
- enum dwarf_debug_section_enum sec,
+ const struct dwarf_debug_section *sec,
asymbol ** syms,
bfd_uint64_t offset,
bfd_byte ** section_buffer,
bfd_size_type * section_size)
{
asection *msec;
- const char *section_name = dwarf_debug_sections[sec].uncompressed_name;
+ const char *section_name = sec->uncompressed_name;
/* read_section is a noop if the section has already been read. */
if (!*section_buffer)
@@ -484,12 +487,14 @@ read_section (bfd * abfd,
msec = bfd_get_section_by_name (abfd, section_name);
if (! msec)
{
- section_name = dwarf_debug_sections[sec].compressed_name;
- msec = bfd_get_section_by_name (abfd, section_name);
+ section_name = sec->compressed_name;
+ if (section_name != NULL)
+ msec = bfd_get_section_by_name (abfd, section_name);
}
if (! msec)
{
- (*_bfd_error_handler) (_("Dwarf Error: Can't find %s section."), section_name);
+ (*_bfd_error_handler) (_("Dwarf Error: Can't find %s section."),
+ sec->uncompressed_name);
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
@@ -606,7 +611,8 @@ read_indirect_string (struct comp_unit * unit,
*bytes_read_ptr = unit->offset_size;
- if (! read_section (unit->abfd, debug_str, stash->syms, offset,
+ if (! read_section (unit->abfd, &stash->debug_sections[debug_str],
+ stash->syms, offset,
&stash->dwarf_str_buffer, &stash->dwarf_str_size))
return NULL;
@@ -688,7 +694,8 @@ read_abbrevs (bfd *abfd, bfd_uint64_t offset, struct dwarf2_debug *stash)
unsigned int abbrev_form, hash_number;
bfd_size_type amt;
- if (! read_section (abfd, debug_abbrev, stash->syms, offset,
+ if (! read_section (abfd, &stash->debug_sections[debug_abbrev],
+ stash->syms, offset,
&stash->dwarf_abbrev_buffer, &stash->dwarf_abbrev_size))
return NULL;
@@ -1396,7 +1403,8 @@ decode_line_info (struct comp_unit *unit, struct dwarf2_debug *stash)
unsigned char op_code, extended_op, adj_opcode;
bfd_size_type amt;
- if (! read_section (abfd, debug_line, stash->syms, unit->line_offset,
+ if (! read_section (abfd, &stash->debug_sections[debug_line],
+ stash->syms, unit->line_offset,
&stash->dwarf_line_buffer, &stash->dwarf_line_size))
return NULL;
@@ -1811,7 +1819,8 @@ static bfd_boolean
read_debug_ranges (struct comp_unit *unit)
{
struct dwarf2_debug *stash = unit->stash;
- return read_section (unit->abfd, debug_ranges, stash->syms, 0,
+ return read_section (unit->abfd, &stash->debug_sections[debug_ranges],
+ stash->syms, 0,
&stash->dwarf_ranges_buffer, &stash->dwarf_ranges_size);
}
@@ -2717,18 +2726,18 @@ comp_unit_hash_info (struct dwarf2_debug *stash,
/* Locate a section in a BFD containing debugging info. The search starts
from the section after AFTER_SEC, or from the first section in the BFD if
AFTER_SEC is NULL. The search works by examining the names of the
- sections. There are two permissiable names. The first is .debug_info.
- This is the standard DWARF2 name. The second is a prefix .gnu.linkonce.wi.
+ sections. There are three permissiable names. The first two are given
+ by DEBUG_SECTIONS[debug_info] (whose standard DWARF2 names are .debug_info
+ and .zdebug_info). The third is a prefix .gnu.linkonce.wi.
This is a variation on the .debug_info section which has a checksum
describing the contents appended onto the name. This allows the linker to
identify and discard duplicate debugging sections for different
compilation units. */
-#define DWARF2_DEBUG_INFO ".debug_info"
-#define DWARF2_COMPRESSED_DEBUG_INFO ".zdebug_info"
#define GNU_LINKONCE_INFO ".gnu.linkonce.wi."
static asection *
-find_debug_info (bfd *abfd, asection *after_sec)
+find_debug_info (bfd *abfd, const struct dwarf_debug_section *debug_sections,
+ asection *after_sec)
{
asection * msec;
@@ -2736,10 +2745,13 @@ find_debug_info (bfd *abfd, asection *after_sec)
while (msec)
{
- if (strcmp (msec->name, DWARF2_DEBUG_INFO) == 0)
+ if (strcmp (msec->name,
+ debug_sections[debug_info].uncompressed_name) == 0)
return msec;
- if (strcmp (msec->name, DWARF2_COMPRESSED_DEBUG_INFO) == 0)
+ if (debug_sections[debug_info].compressed_name != NULL
+ && strcmp (msec->name,
+ debug_sections[debug_info].compressed_name) == 0)
return msec;
if (CONST_STRNEQ (msec->name, GNU_LINKONCE_INFO))
@@ -2786,7 +2798,9 @@ place_sections (bfd *abfd, struct dwarf2_debug *stash)
asection *sect;
bfd_vma last_vma = 0, last_dwarf = 0;
bfd_size_type amt;
+ const char *debug_info_name;
+ debug_info_name = stash->debug_sections[debug_info].uncompressed_name;
i = 0;
for (sect = abfd->sections; sect != NULL; sect = sect->next)
{
@@ -2799,7 +2813,7 @@ place_sections (bfd *abfd, struct dwarf2_debug *stash)
/* We need to adjust the VMAs of any .debug_info sections.
Skip compressed ones, since no relocations could target
them - they should not appear in object files anyway. */
- if (strcmp (sect->name, DWARF2_DEBUG_INFO) == 0)
+ if (strcmp (sect->name, debug_info_name) == 0)
is_debug_info = 1;
else if (CONST_STRNEQ (sect->name, GNU_LINKONCE_INFO))
is_debug_info = 1;
@@ -2835,7 +2849,7 @@ place_sections (bfd *abfd, struct dwarf2_debug *stash)
/* We need to adjust the VMAs of any .debug_info sections.
Skip compressed ones, since no relocations could target
them - they should not appear in object files anyway. */
- if (strcmp (sect->name, DWARF2_DEBUG_INFO) == 0)
+ if (strcmp (sect->name, debug_info_name) == 0)
is_debug_info = 1;
else if (CONST_STRNEQ (sect->name, GNU_LINKONCE_INFO))
is_debug_info = 1;
@@ -3110,12 +3124,14 @@ stash_find_line_fast (struct dwarf2_debug *stash,
FILENAME_PTR and LINENUMBER_PTR. In the case where SYMBOL was
NULL the FUNCTIONNAME_PTR is also filled in.
SYMBOLS contains the symbol table for ABFD.
+ DEBUG_SECTIONS contains the name of the dwarf debug sections.
ADDR_SIZE is the number of bytes in the initial .debug_info length
field and in the abbreviation offset, or zero to indicate that the
default value should be used. */
static bfd_boolean
find_line (bfd *abfd,
+ const struct dwarf_debug_section *debug_sections,
asection *section,
bfd_vma offset,
asymbol *symbol,
@@ -3150,6 +3166,7 @@ find_line (bfd *abfd,
stash = (struct dwarf2_debug *) bfd_zalloc (abfd, amt);
if (! stash)
return FALSE;
+ stash->debug_sections = debug_sections;
}
/* In a relocatable file, 2 functions may have the same address.
@@ -3193,7 +3210,7 @@ find_line (bfd *abfd,
*pinfo = stash;
- msec = find_debug_info (abfd, NULL);
+ msec = find_debug_info (abfd, debug_sections, NULL);
if (msec == NULL)
{
char * debug_filename = bfd_follow_gnu_debuglink (abfd, DEBUGDIR);
@@ -3207,7 +3224,8 @@ find_line (bfd *abfd,
if ((debug_bfd = bfd_openr (debug_filename, NULL)) == NULL
|| ! bfd_check_format (debug_bfd, bfd_object)
- || (msec = find_debug_info (debug_bfd, NULL)) == NULL)
+ || (msec = find_debug_info (debug_bfd,
+ debug_sections, NULL)) == NULL)
{
if (debug_bfd)
bfd_close (debug_bfd);
@@ -3230,18 +3248,21 @@ find_line (bfd *abfd,
some or all sections are compressed, then do things the slow
way, with a bunch of reallocs. */
- if (! find_debug_info (debug_bfd, msec))
+ if (! find_debug_info (debug_bfd, debug_sections, msec))
{
/* Case 1: only one info section. */
total_size = msec->size;
- if (! read_section (debug_bfd, debug_info, symbols, 0,
+ if (! read_section (debug_bfd, &stash->debug_sections[debug_info],
+ symbols, 0,
&stash->info_ptr_memory, &total_size))
goto done;
}
else
{
/* Case 2: multiple sections. */
- for (total_size = 0; msec; msec = find_debug_info (debug_bfd, msec))
+ for (total_size = 0;
+ msec;
+ msec = find_debug_info (debug_bfd, debug_sections, msec))
total_size += msec->size;
stash->info_ptr_memory = (bfd_byte *) bfd_malloc (total_size);
@@ -3249,9 +3270,9 @@ find_line (bfd *abfd,
goto done;
total_size = 0;
- for (msec = find_debug_info (debug_bfd, NULL);
+ for (msec = find_debug_info (debug_bfd, debug_sections, NULL);
msec;
- msec = find_debug_info (debug_bfd, msec))
+ msec = find_debug_info (debug_bfd, debug_sections, msec))
{
bfd_size_type size;
@@ -3270,7 +3291,7 @@ find_line (bfd *abfd,
stash->info_ptr = stash->info_ptr_memory;
stash->info_ptr_end = stash->info_ptr + total_size;
- stash->sec = find_debug_info (debug_bfd, NULL);
+ stash->sec = find_debug_info (debug_bfd, debug_sections, NULL);
stash->sec_info_ptr = stash->info_ptr;
stash->syms = symbols;
stash->bfd_ptr = debug_bfd;
@@ -3425,7 +3446,8 @@ find_line (bfd *abfd,
if ((bfd_vma) (stash->info_ptr - stash->sec_info_ptr)
== stash->sec->size)
{
- stash->sec = find_debug_info (stash->bfd_ptr, stash->sec);
+ stash->sec = find_debug_info (stash->bfd_ptr, debug_sections,
+ stash->sec);
stash->sec_info_ptr = stash->info_ptr;
}
@@ -3446,6 +3468,7 @@ done:
bfd_boolean
_bfd_dwarf2_find_nearest_line (bfd *abfd,
+ const struct dwarf_debug_section *debug_sections,
asection *section,
asymbol **symbols,
bfd_vma offset,
@@ -3455,8 +3478,8 @@ _bfd_dwarf2_find_nearest_line (bfd *abfd,
unsigned int addr_size,
void **pinfo)
{
- return find_line (abfd, section, offset, NULL, symbols, filename_ptr,
- functionname_ptr, linenumber_ptr, addr_size,
+ return find_line (abfd, debug_sections, section, offset, NULL, symbols,
+ filename_ptr, functionname_ptr, linenumber_ptr, addr_size,
pinfo);
}
@@ -3472,9 +3495,8 @@ _bfd_dwarf2_find_line (bfd *abfd,
unsigned int addr_size,
void **pinfo)
{
- return find_line (abfd, NULL, 0, symbol, symbols, filename_ptr,
- NULL, linenumber_ptr, addr_size,
- pinfo);
+ return find_line (abfd, dwarf_debug_sections, NULL, 0, symbol, symbols,
+ filename_ptr, NULL, linenumber_ptr, addr_size, pinfo);
}
bfd_boolean