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dbghelp: Add support for stream lookup by name in PDB files and use it for strings stream.

This commit is contained in:
Eric Pouech 2011-01-17 21:54:04 +01:00 committed by Alexandre Julliard
parent a43b38fe0c
commit 8595f6c652
1 changed files with 72 additions and 9 deletions
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81
dlls/dbghelp/msc.c
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@ -62,12 +62,19 @@ WINE_DEFAULT_DEBUG_CHANNEL(dbghelp_msc);
#define MAX_PATHNAME_LEN 1024
struct pdb_stream_name
{
const char* name;
unsigned index;
};
struct pdb_file_info
{
enum pdb_kind kind;
DWORD age;
HANDLE hMap;
const char* image;
struct pdb_stream_name* stream_dict;
union
{
struct
@ -2159,21 +2166,73 @@ static void pdb_free_file(struct pdb_file_info* pdb_file)
pdb_file->u.ds.toc = NULL;
break;
}
HeapFree(GetProcessHeap(), 0, pdb_file->stream_dict);
}
static BOOL pdb_load_stream_name_table(struct pdb_file_info* pdb_file, const char* str, unsigned cb)
{
DWORD* pdw;
DWORD* ok_bits;
DWORD count, numok;
unsigned i, j;
char* cpstr;
pdw = (DWORD*)(str + cb);
numok = *pdw++;
count = *pdw++;
pdb_file->stream_dict = HeapAlloc(GetProcessHeap(), 0, (numok + 1) * sizeof(struct pdb_stream_name) + cb);
if (!pdb_file->stream_dict) return FALSE;
cpstr = (char*)(pdb_file->stream_dict + numok + 1);
memcpy(cpstr, str, cb);
/* bitfield: first dword is len (in dword), then data */
ok_bits = pdw;
pdw += *ok_bits++ + 1;
if (*pdw++ != 0)
{
FIXME("unexpected value\n");
return -1;
}
for (i = j = 0; i < count; i++)
{
if (ok_bits[i / 32] & (1 << (i % 32)))
{
if (j >= numok) break;
pdb_file->stream_dict[j].name = &cpstr[*pdw++];
pdb_file->stream_dict[j].index = *pdw++;
j++;
}
}
/* add sentinel */
pdb_file->stream_dict[numok].name = NULL;
return j == numok && i == count;
}
static unsigned pdb_get_stream_by_name(const struct pdb_file_info* pdb_file, const char* name)
{
struct pdb_stream_name* psn;
for (psn = pdb_file->stream_dict; psn && psn->name; psn++)
{
if (!strcmp(psn->name, name)) return psn->index;
}
return -1;
}
static void* pdb_read_strings(const struct pdb_file_info* pdb_file)
{
unsigned idx;
void *ret;
/* FIXME: how to determine the correct file number? */
/* 4 and 12 have been observed, there may be others */
ret = pdb_read_file( pdb_file, 4 );
if (ret && *(const DWORD *)ret == 0xeffeeffe) return ret;
pdb_free( ret );
ret = pdb_read_file( pdb_file, 12 );
if (ret && *(const DWORD *)ret == 0xeffeeffe) return ret;
pdb_free( ret );
idx = pdb_get_stream_by_name(pdb_file, "/names");
if (idx != -1)
{
ret = pdb_read_file( pdb_file, idx );
if (ret && *(const DWORD *)ret == 0xeffeeffe) return ret;
pdb_free( ret );
}
WARN("string table not found\n");
return NULL;
}
@ -2411,6 +2470,8 @@ static BOOL pdb_init(const struct pdb_lookup* pdb_lookup, struct pdb_file_info*
pdb_lookup->filename, root->Age, pdb_lookup->age);
TRACE("found JG for %s: age=%x timestamp=%x\n",
pdb_lookup->filename, root->Age, root->TimeDateStamp);
pdb_load_stream_name_table(pdb_file, &root->names[0], root->cbNames);
pdb_free(root);
}
else if (!memcmp(image, PDB_DS_IDENT, sizeof(PDB_DS_IDENT)))
@ -2447,6 +2508,8 @@ static BOOL pdb_init(const struct pdb_lookup* pdb_lookup, struct pdb_file_info*
pdb_lookup->filename, root->Age, pdb_lookup->age);
TRACE("found DS for %s: age=%x guid=%s\n",
pdb_lookup->filename, root->Age, debugstr_guid(&root->guid));
pdb_load_stream_name_table(pdb_file, &root->names[0], root->cbNames);
pdb_free(root);
}