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ntdll: Mind generic xstate masks in server context conversion.

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Paul Gofman 2024-03-18 15:14:50 -06:00 • committed by Alexandre Julliard
parent a9d77d0989
commit 3dea242677
1 changed files with 9 additions and 2 deletions
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11
dlls/ntdll/unix/thread.c
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@ -236,6 +236,7 @@ static void xstate_to_server( context_t *to, const CONTEXT_EX *xctx )
{
const XSTATE *xs = (const XSTATE *)((const char *)xctx + xctx->XState.Offset);
if (xs->CompactionMask && !(xs->CompactionMask & 4)) return;
to->flags |= SERVER_CTX_YMM_REGISTERS;
if (xs->Mask & 4) memcpy( &to->ymm.regs.ymm_high, &xs->YmmContext, sizeof(xs->YmmContext) );
}
@ -613,8 +614,14 @@ static void xstate_from_server( CONTEXT_EX *xctx, const context_t *from )
XSTATE *xs = (XSTATE *)((char *)xctx + xctx->XState.Offset);
unsigned int i;
xs->Mask &= ~4;
if (xs->CompactionMask) xs->CompactionMask = 0x8000000000000004;
xs->Mask &= ~(ULONG64)4;
if (xs->CompactionMask)
{
xs->CompactionMask &= ~(UINT64)3;
if (!(xs->CompactionMask & 4)) return;
}
for (i = 0; i < ARRAY_SIZE( from->ymm.regs.ymm_high); i++)
{
if (!from->ymm.regs.ymm_high[i].low && !from->ymm.regs.ymm_high[i].high) continue;