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ntdll: Initialize MxCsr for new threads on x86.

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Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2019-11-02 14:34:17 +01:00
parent 42cf6cce4b
commit 1b3fa02190
1 changed files with 2 additions and 1 deletions
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3
dlls/ntdll/signal_i386.c
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@ -2716,6 +2716,7 @@ static void init_thread_context( CONTEXT *context, LPTHREAD_START_ROUTINE entry,
context->Eip = (DWORD)relay;
context->FloatSave.ControlWord = 0x27f;
((XMM_SAVE_AREA32 *)context->ExtendedRegisters)->ControlWord = 0x27f;
((XMM_SAVE_AREA32 *)context->ExtendedRegisters)->MxCsr = 0x1f80;
}
@ -2741,7 +2742,7 @@ PCONTEXT DECLSPEC_HIDDEN attach_thread( LPTHREAD_START_ROUTINE entry, void *arg,
ctx = (CONTEXT *)((char *)NtCurrentTeb()->Tib.StackBase - 16) - 1;
init_thread_context( ctx, entry, arg, relay );
}
ctx->ContextFlags = CONTEXT_FULL;
ctx->ContextFlags = CONTEXT_FULL | CONTEXT_FLOATING_POINT | CONTEXT_EXTENDED_REGISTERS;
LdrInitializeThunk( ctx, (void **)&ctx->Eax, 0, 0 );
return ctx;
}