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dbghelp: In dwarf parser, when looking for FDE/CIE skip first O-length entries.

This commit is contained in:
Eric Pouech 2012-02-13 21:41:45 +01:00 committed by Alexandre Julliard
parent 611d5e470d
commit 5201415626
1 changed files with 12 additions and 1 deletions
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13
dlls/dbghelp/dwarf.c
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@ -2632,6 +2632,15 @@ static BOOL dwarf2_get_cie(unsigned long addr, struct module* module, DWORD_PTR
const BYTE* start_data = fde_ctx->data;
cie_id = in_eh_frame ? 0 : DW_CIE_ID;
/* skip 0-padding at beginning of section (alignment) */
while (fde_ctx->data + 2 * 4 < fde_ctx->end_data)
{
if (dwarf2_parse_u4(fde_ctx))
{
fde_ctx->data -= 4;
break;
}
}
for (; fde_ctx->data + 2 * 4 < fde_ctx->end_data; fde_ctx->data = ptr_blk)
{
/* find the FDE for address addr (skip CIE) */
@ -2659,7 +2668,9 @@ static BOOL dwarf2_get_cie(unsigned long addr, struct module* module, DWORD_PTR
cie_ctx->end_data = cie_ptr + 4 + dwarf2_parse_u4(cie_ctx);
if (dwarf2_parse_u4(cie_ctx) != cie_id)
{
FIXME("wrong CIE pointer\n");
FIXME("wrong CIE pointer at %x from FDE %x\n",
(unsigned)(cie_ptr - start_data),
(unsigned)(fde_ctx->data - start_data));
return FALSE;
}
if (!parse_cie_details(cie_ctx, info)) return FALSE;