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Beginning of dbghelp dwarf2 support: 

- add elf_module entry for dwarf2_parse
- stubbed dwarf2_parse in new dwarf.c file
This commit is contained in:
Raphael Junqueira 2005-05-17 14:32:55 +00:00 committed by Alexandre Julliard
parent 402aaa8edb
commit 83f001b6c7
4 changed files with 167 additions and 5 deletions
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1
dlls/dbghelp/Makefile.in
View File

@ -9,6 +9,7 @@ IMPORTS = psapi kernel32 ntdll
C_SRCS = \
coff.c \
dbghelp.c \
dwarf.c \
elf_module.c \
image.c \
memory.c \

6
dlls/dbghelp/dbghelp_private.h
View File

@ -356,6 +356,12 @@ extern BOOL stabs_parse(struct module* module, unsigned long load_offset
const void* stabs, int stablen,
const char* strs, int strtablen);
/* dwarf.c */
extern BOOL dwarf2_parse(struct module* module, unsigned long load_offset,
const unsigned char* debug, unsigned int debug_size,
const unsigned char* abbrev, unsigned int abbrev_size,
const unsigned char* str, unsigned int str_sz);
/* symbol.c */
extern const char* symt_get_name(const struct symt* sym);
extern int symt_cmp_addr(const void* p1, const void* p2);

123
dlls/dbghelp/dwarf.c Normal file
View File

@ -0,0 +1,123 @@
/*
* File dwarf.c - read dwarf2 information from the ELF modules
*
* Copyright (C) 2005, Raphael Junqueira
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include <sys/types.h>
#include <fcntl.h>
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <stdio.h>
#ifndef PATH_MAX
#define PATH_MAX MAX_PATH
#endif
#include <assert.h>
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "winreg.h"
#include "winnls.h"
#include "dbghelp_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(dbghelp_dwarf);
/**
*
* Main Specs:
* http://www.eagercon.com/dwarf/dwarf3std.htm
* http://www.eagercon.com/dwarf/dwarf-2.0.0.pdf
*
* dwarf2.h: http://www.hakpetzna.com/b/binutils/dwarf2_8h-source.html
*
* example of projects who do dwarf2 parsing:
* http://www.x86-64.org/cgi-bin/cvsweb.cgi/binutils.dead/binutils/readelf.c?rev=1.1.1.2
* http://elis.ugent.be/diota/log/ltrace_elf.c
*/
typedef struct dwarf2_parse_context_s {
const unsigned char* data;
} dwarf2_parse_context_t;
unsigned long dwarf2_leb128_as_unsigned(dwarf2_parse_context_t* ctx)
{
unsigned long ret = 0;
unsigned char byte;
unsigned shift = 0;
assert( NULL != ctx );
while (1) {
byte = *(ctx->data);
ctx->data++;
ret |= (byte & 0x7f) << shift;
shift += 7;
if (0 == (byte & 0x80)) { break ; }
}
return ret;
}
long dwarf2_leb128_as_signed(dwarf2_parse_context_t* ctx)
{
long ret = 0;
unsigned char byte;
unsigned shift = 0;
const unsigned size = sizeof(int) * 8;
assert( NULL != ctx );
while (1) {
byte = *(ctx->data);
ctx->data++;
ret |= (byte & 0x7f) << shift;
shift += 7;
if (0 == (byte & 0x80)) { break ; }
}
/* as spec: sign bit of byte is 2nd high order bit (80x40)
* -> 0x80 is used as flag.
*/
if ((shift < size) && (byte & 0x40)) {
ret |= - (1 << shift);
}
return ret;
}
BOOL dwarf2_parse(struct module* module, unsigned long load_offset,
const unsigned char* debug, unsigned int debug_size,
const unsigned char* abbrev, unsigned int abbrev_size,
const unsigned char* str, unsigned int str_sz)
{
return FALSE;
}

42
dlls/dbghelp/elf_module.c
View File

@ -776,7 +776,9 @@ static BOOL elf_load_debug_info_from_map(struct module* module,
BOOL ret = FALSE;
const char* shstrtab;
int i;
int symtab_sect, dynsym_sect, stab_sect, stabstr_sect, debug_sect, debuglink_sect;
int symtab_sect, dynsym_sect, stab_sect, stabstr_sect;
int debug_sect, debug_str_sect, debug_abbrev_sect, debug_line_sect;
int debuglink_sect;
struct thunk_area thunks[] =
{
{"__wine_spec_import_thunks", THUNK_ORDINAL_NOTYPE, 0, 0}, /* inter DLL calls */
@ -806,8 +808,9 @@ static BOOL elf_load_debug_info_from_map(struct module* module,
shstrtab = elf_map_section(fmap, fmap->elfhdr.e_shstrndx);
if (shstrtab == NO_MAP) return FALSE;
symtab_sect = dynsym_sect = stab_sect = stabstr_sect =
debug_sect = debuglink_sect = -1;
symtab_sect = dynsym_sect = stab_sect = stabstr_sect = -1;
debug_sect = debug_str_sect = debug_abbrev_sect = debug_line_sect = -1;
debuglink_sect = -1;
for (i = 0; i < fmap->elfhdr.e_shnum; i++)
{
@ -817,6 +820,12 @@ static BOOL elf_load_debug_info_from_map(struct module* module,
stabstr_sect = i;
if (strcmp(shstrtab + fmap->sect[i].shdr.sh_name, ".debug_info") == 0)
debug_sect = i;
if (strcmp(shstrtab + fmap->sect[i].shdr.sh_name, ".debug_str") == 0)
debug_str_sect = i;
if (strcmp(shstrtab + fmap->sect[i].shdr.sh_name, ".debug_abbrev") == 0)
debug_abbrev_sect = i;
if (strcmp(shstrtab + fmap->sect[i].shdr.sh_name, ".debug_line") == 0)
debug_line_sect = i;
if (strcmp(shstrtab + fmap->sect[i].shdr.sh_name, ".gnu_debuglink") == 0)
debuglink_sect = i;
if ((strcmp(shstrtab + fmap->sect[i].shdr.sh_name, ".symtab") == 0) &&
@ -874,8 +883,31 @@ static BOOL elf_load_debug_info_from_map(struct module* module,
else if (debug_sect != -1)
{
/* Dwarf 2 debug information */
FIXME("Unsupported Dwarf2 information for %s\n",
module->module.ModuleName);
const char* dw2_debug;
const char* dw2_debug_abbrev;
const char* dw2_debug_str;
FIXME("Alpha-support for Dwarf2 information for %s\n", module->module.ModuleName);
dw2_debug = elf_map_section(fmap, debug_sect);
dw2_debug_abbrev = elf_map_section(fmap, debug_abbrev_sect);
dw2_debug_str = elf_map_section(fmap, debug_str_sect);
if (dw2_debug != NO_MAP && NO_MAP != dw2_debug_abbrev && dw2_debug_str != NO_MAP)
{
/* OK, now just parse dwarf2 debug infos. */
ret = dwarf2_parse(module, module->elf_info->elf_addr,
dw2_debug, fmap->sect[debug_sect].shdr.sh_size,
dw2_debug_abbrev, fmap->sect[debug_abbrev_sect].shdr.sh_size,
dw2_debug_str, fmap->sect[debug_str_sect].shdr.sh_size);
}
elf_unmap_section(fmap, debug_sect);
elf_unmap_section(fmap, debug_abbrev_sect);
elf_unmap_section(fmap, debug_str_sect);
if (!ret)
{
WARN("Couldn't correctly read stabs\n");
return FALSE;
}
}
else if (debuglink_sect != -1)
{