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dbghelp: Add support for loading dwarf debug information out of PE images.

This commit is contained in:
Eric Pouech 2009-12-23 22:05:25 +01:00 committed by Alexandre Julliard
parent 1c238c77f7
commit bc38d3eaac
2 changed files with 81 additions and 23 deletions
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2
dlls/dbghelp/elf_module.c
View File

@ -369,7 +369,7 @@ int elf_is_in_thunk_area(unsigned long addr,
{ {
unsigned i; unsigned i;
for (i = 0; thunks[i].symname; i++) if (thunks) for (i = 0; thunks[i].symname; i++)
{ {
if (addr >= thunks[i].rva_start && addr < thunks[i].rva_end) if (addr >= thunks[i].rva_start && addr < thunks[i].rva_end)
return i; return i;

98
dlls/dbghelp/pe_module.c
View File

@ -98,6 +98,17 @@ static BOOL pe_load_symbol_table(struct module* module, IMAGE_NT_HEADERS* nth, v
return TRUE; return TRUE;
} }
static inline void* pe_get_sect(IMAGE_NT_HEADERS* nth, void* mapping,
IMAGE_SECTION_HEADER* sect)
{
return (sect) ? RtlImageRvaToVa(nth, mapping, sect->VirtualAddress, NULL) : NULL;
}
static inline DWORD pe_get_sect_size(IMAGE_SECTION_HEADER* sect)
{
return (sect) ? sect->SizeOfRawData : 0;
}
/****************************************************************** /******************************************************************
* pe_load_stabs * pe_load_stabs
* *
@ -108,39 +119,85 @@ static BOOL pe_load_stabs(const struct process* pcs, struct module* module,
void* mapping, IMAGE_NT_HEADERS* nth) void* mapping, IMAGE_NT_HEADERS* nth)
{ {
IMAGE_SECTION_HEADER* section; IMAGE_SECTION_HEADER* section;
int i, stabsize = 0, stabstrsize = 0; IMAGE_SECTION_HEADER* sect_stabs = NULL;
unsigned int stabs = 0, stabstr = 0; IMAGE_SECTION_HEADER* sect_stabstr = NULL;
BOOL ret = FALSE; int i;
BOOL ret;
section = (IMAGE_SECTION_HEADER*) section = (IMAGE_SECTION_HEADER*)
((char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader); ((char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
for (i = 0; i < nth->FileHeader.NumberOfSections; i++, section++) for (i = 0; i < nth->FileHeader.NumberOfSections; i++, section++)
{ {
if (!strcasecmp((const char*)section->Name, ".stab")) if (!strcasecmp((const char*)section->Name, ".stab")) sect_stabs = section;
{ else if (!strncasecmp((const char*)section->Name, ".stabstr", 8)) sect_stabstr = section;
stabs = section->VirtualAddress;
stabsize = section->SizeOfRawData;
} }
else if (!strncasecmp((const char*)section->Name, ".stabstr", 8)) if (sect_stabs && sect_stabstr)
{
stabstr = section->VirtualAddress;
stabstrsize = section->SizeOfRawData;
}
}
if (stabstrsize && stabsize)
{ {
ret = stabs_parse(module, ret = stabs_parse(module,
module->module.BaseOfImage - nth->OptionalHeader.ImageBase, module->module.BaseOfImage - nth->OptionalHeader.ImageBase,
RtlImageRvaToVa(nth, mapping, stabs, NULL), pe_get_sect(nth, mapping, sect_stabs), pe_get_sect_size(sect_stabs),
stabsize, pe_get_sect(nth, mapping, sect_stabstr), pe_get_sect_size(sect_stabstr),
RtlImageRvaToVa(nth, mapping, stabstr, NULL),
stabstrsize,
NULL, NULL); NULL, NULL);
if (ret) pe_load_symbol_table(module, nth, mapping); if (ret) pe_load_symbol_table(module, nth, mapping);
} }
TRACE("%s the STABS debug info\n", ret ? "successfully loaded" : "failed to load"); TRACE("%s the STABS debug info\n", ret ? "successfully loaded" : "failed to load");
return ret;
}
/******************************************************************
* pe_load_dwarf
*
* look for dwarf information in PE header (it's also a way for the mingw compiler
* to provide its debugging information)
*/
static BOOL pe_load_dwarf(const struct process* pcs, struct module* module,
void* mapping, IMAGE_NT_HEADERS* nth)
{
IMAGE_SECTION_HEADER* section;
IMAGE_SECTION_HEADER* sect_debuginfo = NULL;
IMAGE_SECTION_HEADER* sect_debugstr = NULL;
IMAGE_SECTION_HEADER* sect_debugabbrev = NULL;
IMAGE_SECTION_HEADER* sect_debugline = NULL;
IMAGE_SECTION_HEADER* sect_debugloc = NULL;
int i;
const char* strtable;
const char* sectname;
BOOL ret;
if (nth->FileHeader.PointerToSymbolTable && nth->FileHeader.NumberOfSymbols)
/* FIXME: no way to get strtable size */
strtable = (const char*)mapping + nth->FileHeader.PointerToSymbolTable +
nth->FileHeader.NumberOfSymbols * sizeof(IMAGE_SYMBOL);
else strtable = NULL;
section = (IMAGE_SECTION_HEADER*)
((char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
for (i = 0; i < nth->FileHeader.NumberOfSections; i++, section++)
{
sectname = (const char*)section->Name;
/* long section names start with a '/' (at least on MinGW32) */
if (*sectname == '/' && strtable)
sectname = strtable + atoi(sectname + 1);
if (!strcasecmp(sectname, ".debug_info")) sect_debuginfo = section;
else if (!strcasecmp(sectname, ".debug_str")) sect_debugstr = section;
else if (!strcasecmp(sectname, ".debug_abbrev")) sect_debugabbrev = section;
else if (!strcasecmp(sectname, ".debug_line")) sect_debugline = section;
else if (!strcasecmp(sectname, ".debug_loc")) sect_debugloc = section;
}
if (sect_debuginfo)
{
ret = dwarf2_parse(module,
module->module.BaseOfImage - nth->OptionalHeader.ImageBase,
NULL, /* FIXME: some thunks to deal with ? */
pe_get_sect(nth, mapping, sect_debuginfo), pe_get_sect_size(sect_debuginfo),
pe_get_sect(nth, mapping, sect_debugabbrev), pe_get_sect_size(sect_debugabbrev),
pe_get_sect(nth, mapping, sect_debugstr), pe_get_sect_size(sect_debugstr),
pe_get_sect(nth, mapping, sect_debugline), pe_get_sect_size(sect_debugline),
pe_get_sect(nth, mapping, sect_debugloc), pe_get_sect_size(sect_debugloc));
}
TRACE("%s the DWARF debug info\n", ret ? "successfully loaded" : "failed to load");
return ret; return ret;
} }
@ -349,6 +406,7 @@ BOOL pe_load_debug_info(const struct process* pcs, struct module* module)
if (!(dbghelp_options & SYMOPT_PUBLICS_ONLY)) if (!(dbghelp_options & SYMOPT_PUBLICS_ONLY))
{ {
ret = pe_load_stabs(pcs, module, mapping, nth) || ret = pe_load_stabs(pcs, module, mapping, nth) ||
pe_load_dwarf(pcs, module, mapping, nth) ||
pe_load_msc_debug_info(pcs, module, mapping, nth); pe_load_msc_debug_info(pcs, module, mapping, nth);
/* if we still have no debug info (we could only get SymExport at this /* if we still have no debug info (we could only get SymExport at this
* point), then do the SymExport except if we have an ELF container, * point), then do the SymExport except if we have an ELF container,