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dbghelp: Allow to add an alternate file_map for an ELF file (where to look for its debug information).

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Eric Pouech 2007-02-24 21:01:10 +01:00 committed by Alexandre Julliard
parent 62b57f9e21
commit fc66bb37f4
1 changed files with 38 additions and 22 deletions
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60
dlls/dbghelp/elf_module.c
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@ -115,6 +115,7 @@ struct elf_file_map
unsigned with_crc; unsigned with_crc;
unsigned long crc; unsigned long crc;
const char* shstrtab; const char* shstrtab;
struct elf_file_map* alternate; /* another ELF file (linked to this one) */
}; };
struct elf_section_map struct elf_section_map
@ -167,27 +168,32 @@ static const char* elf_map_section(struct elf_section_map* esm)
* elf_find_section * elf_find_section
* *
* Finds a section by name (and type) into memory from an ELF file * Finds a section by name (and type) into memory from an ELF file
* or its alternate if any
*/ */
static BOOL elf_find_section(struct elf_file_map* fmap, const char* name, static BOOL elf_find_section(struct elf_file_map* fmap, const char* name,
unsigned sht, struct elf_section_map* esm) unsigned sht, struct elf_section_map* esm)
{ {
unsigned i; unsigned i;
if (fmap->shstrtab == ELF_NO_MAP) while (fmap)
{ {
struct elf_section_map hdr_esm = {fmap, fmap->elfhdr.e_shstrndx}; if (fmap->shstrtab == ELF_NO_MAP)
fmap->shstrtab = elf_map_section(&hdr_esm);
if (fmap->shstrtab == ELF_NO_MAP) return FALSE;
}
for (i = 0; i < fmap->elfhdr.e_shnum; i++)
{
if (strcmp(fmap->shstrtab + fmap->sect[i].shdr.sh_name, name) == 0 &&
(sht == SHT_NULL || sht == fmap->sect[i].shdr.sh_type))
{ {
esm->fmap = fmap; struct elf_section_map hdr_esm = {fmap, fmap->elfhdr.e_shstrndx};
esm->sidx = i; fmap->shstrtab = elf_map_section(&hdr_esm);
return TRUE; if (fmap->shstrtab == ELF_NO_MAP) return FALSE;
} }
for (i = 0; i < fmap->elfhdr.e_shnum; i++)
{
if (strcmp(fmap->shstrtab + fmap->sect[i].shdr.sh_name, name) == 0 &&
(sht == SHT_NULL || sht == fmap->sect[i].shdr.sh_type))
{
esm->fmap = fmap;
esm->sidx = i;
return TRUE;
}
}
fmap = fmap->alternate;
} }
return FALSE; return FALSE;
} }
@ -217,9 +223,14 @@ static void elf_end_find(struct elf_file_map* fmap)
{ {
struct elf_section_map esm; struct elf_section_map esm;
esm.fmap = fmap; esm.sidx = fmap->elfhdr.e_shstrndx; while (fmap)
elf_unmap_section(&esm); {
fmap->shstrtab = ELF_NO_MAP; esm.fmap = fmap;
esm.sidx = fmap->elfhdr.e_shstrndx;
elf_unmap_section(&esm);
fmap->shstrtab = ELF_NO_MAP;
fmap = fmap->alternate;
}
} }
/****************************************************************** /******************************************************************
@ -257,6 +268,7 @@ static BOOL elf_map_file(const WCHAR* filenameW, struct elf_file_map* fmap)
fmap->fd = -1; fmap->fd = -1;
fmap->with_crc = 0; fmap->with_crc = 0;
fmap->shstrtab = ELF_NO_MAP; fmap->shstrtab = ELF_NO_MAP;
fmap->alternate = NULL;
/* check that the file exists, and that the module hasn't been loaded yet */ /* check that the file exists, and that the module hasn't been loaded yet */
if (stat(filename, &statbuf) == -1 || S_ISDIR(statbuf.st_mode)) goto done; if (stat(filename, &statbuf) == -1 || S_ISDIR(statbuf.st_mode)) goto done;
@ -312,16 +324,20 @@ done:
*/ */
static void elf_unmap_file(struct elf_file_map* fmap) static void elf_unmap_file(struct elf_file_map* fmap)
{ {
if (fmap->fd != -1) while (fmap)
{ {
struct elf_section_map esm; if (fmap->fd != -1)
esm.fmap = fmap;
for (esm.sidx = 0; esm.sidx < fmap->elfhdr.e_shnum; esm.sidx++)
{ {
elf_unmap_section(&esm); struct elf_section_map esm;
esm.fmap = fmap;
for (esm.sidx = 0; esm.sidx < fmap->elfhdr.e_shnum; esm.sidx++)
{
elf_unmap_section(&esm);
}
HeapFree(GetProcessHeap(), 0, fmap->sect);
close(fmap->fd);
} }
HeapFree(GetProcessHeap(), 0, fmap->sect); fmap = fmap->alternate;
close(fmap->fd);
} }
} }