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ntdll: Add support for rep;ret instruction in function epilogs.

This commit is contained in:
Alexandre Julliard 2012-03-12 18:59:45 +01:00
parent 7b6498314c
commit 34c875bf8b
1 changed files with 3 additions and 0 deletions
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3
dlls/ntdll/signal_x86_64.c
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@ -2648,6 +2648,8 @@ static BOOL is_inside_epilog( BYTE *pc )
case 0xc2: /* ret $nn */
case 0xc3: /* ret */
return TRUE;
case 0xf3: /* rep; ret (for amd64 prediction bug) */
return pc[1] == 0xc3;
/* FIXME: add various jump instructions */
}
return FALSE;
@ -2702,6 +2704,7 @@ static void interpret_epilog( BYTE *pc, CONTEXT *context, KNONVOLATILE_CONTEXT_P
context->Rsp += sizeof(ULONG64) + *(WORD *)(pc + 1);
return;
case 0xc3: /* ret */
case 0xf3: /* rep; ret */
context->Rip = *(ULONG64 *)context->Rsp;
context->Rsp += sizeof(ULONG64);
return;