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st/nine: Disable fpu exceptions during init

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Prevents a crash in wine tests. The crash
seems to happen in llvmpipe.

Signed-off-by: Axel Davy <davyaxel0@gmail.com>
Acked-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10160>
This commit is contained in:
Axel Davy
2021-03-12 13:03:01 +01:00
committed by Marge Bot
parent 9e5762c387
commit d9e79bfe4f
1 changed files with 34 additions and 1 deletions
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35
src/gallium/frontends/nine/device9.c
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@@ -75,6 +75,19 @@ static void nine_setup_fpu()
__asm__ __volatile__ ("fldcw %0" : : "m" (*&c));
}
static void nine_setup_set_fpu(uint16_t val)
{
__asm__ __volatile__ ("fldcw %0" : : "m" (*&val));
}
static uint16_t nine_setup_get_fpu()
{
uint16_t c;
__asm__ __volatile__ ("fnstcw %0" : "=m" (*&c));
return c;
}
#else
static void nine_setup_fpu(void)
@@ -82,6 +95,17 @@ static void nine_setup_fpu(void)
WARN_ONCE("FPU setup not supported on non-x86 platforms\n");
}
static void nine_setup_set_fpu(uint16_t)
{
WARN_ONCE("FPU setup not supported on non-x86 platforms\n");
}
static uint16_t nine_setup_get_fpu()
{
WARN_ONCE("FPU setup not supported on non-x86 platforms\n");
return 0;
}
#endif
struct pipe_resource *
@@ -159,6 +183,7 @@ NineDevice9_ctor( struct NineDevice9 *This,
int minorVersionNum )
{
unsigned i;
uint16_t fpu_cw = 0;
HRESULT hr = NineUnknown_ctor(&This->base, pParams);
DBG("This=%p pParams=%p pScreen=%p pCreationParameters=%p pCaps=%p pPresentationParameters=%p "
@@ -188,8 +213,13 @@ NineDevice9_ctor( struct NineDevice9 *This,
IDirect3D9_AddRef(This->d3d9);
ID3DPresentGroup_AddRef(This->present);
if (!(This->params.BehaviorFlags & D3DCREATE_FPU_PRESERVE))
if (!(This->params.BehaviorFlags & D3DCREATE_FPU_PRESERVE)) {
nine_setup_fpu();
} else {
/* Software renderer initialization needs exceptions masked */
fpu_cw = nine_setup_get_fpu();
nine_setup_set_fpu(fpu_cw | 0x007f);
}
if (This->params.BehaviorFlags & D3DCREATE_SOFTWARE_VERTEXPROCESSING) {
DBG("Application asked full Software Vertex Processing.\n");
@@ -544,6 +574,9 @@ NineDevice9_ctor( struct NineDevice9 *This,
nine_context_update_state(This); /* Some drivers needs states to be initialized */
nine_csmt_process(This);
if (This->params.BehaviorFlags & D3DCREATE_FPU_PRESERVE)
nine_setup_set_fpu(fpu_cw);
return D3D_OK;
}
#undef GET_PCAP