#include <sys/types.h>
#include <sys/sysctl.h>
#endif
+#if defined(USE_SSE_ASM) && defined(__OpenBSD__)
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <machine/cpu.h>
+#endif
+#include "main/imports.h"
#include "common_x86_asm.h"
-#include "imports.h"
-int _mesa_x86_cpu_features = 0;
+/** Bitmask of X86_FEATURE_x bits */
+int _mesa_x86_cpu_features = 0x0;
+
+
/* No reason for this to be public.
*/
* kernels provide full SSE support on all processors that expose SSE via
* the CPUID mechanism.
*/
+
+/* These are assembly functions: */
extern void _mesa_test_os_sse_support( void );
extern void _mesa_test_os_sse_exception_support( void );
+
#if defined(WIN32)
#ifndef STATUS_FLOAT_MULTIPLE_TRAPS
# define STATUS_FLOAT_MULTIPLE_TRAPS (0xC00002B5L)
#endif /* WIN32 */
-static void check_os_sse_support( void )
+/**
+ * Check if SSE is supported.
+ * If not, turn off the X86_FEATURE_XMM flag in _mesa_x86_cpu_features.
+ */
+void _mesa_check_os_sse_support( void )
{
#if defined(__FreeBSD__)
{
if (ret || !enabled)
_mesa_x86_cpu_features &= ~(X86_FEATURE_XMM);
}
+#elif defined (__NetBSD__)
+ {
+ int ret, enabled;
+ size_t len = sizeof(enabled);
+ ret = sysctlbyname("machdep.sse", &enabled, &len, (void *)NULL, 0);
+ if (ret || !enabled)
+ _mesa_x86_cpu_features &= ~(X86_FEATURE_XMM);
+ }
+#elif defined(__OpenBSD__)
+ {
+ int mib[2];
+ int ret, enabled;
+ size_t len = sizeof(enabled);
+
+ mib[0] = CTL_MACHDEP;
+ mib[1] = CPU_SSE;
+
+ ret = sysctl(mib, 2, &enabled, &len, NULL, 0);
+ if (ret || !enabled)
+ _mesa_x86_cpu_features &= ~(X86_FEATURE_XMM);
+ }
#elif defined(WIN32)
LPTOP_LEVEL_EXCEPTION_FILTER oldFilter;
#endif /* USE_SSE_ASM */
-void _mesa_init_all_x86_transform_asm( void )
+/**
+ * Initialize the _mesa_x86_cpu_features bitfield.
+ * This is a no-op if called more than once.
+ */
+void
+_mesa_get_x86_features(void)
{
+ static int called = 0;
+
+ if (called)
+ return;
+
+ called = 1;
+
#ifdef USE_X86_ASM
- _mesa_x86_cpu_features = 0;
+ _mesa_x86_cpu_features = 0x0;
+
+ if (_mesa_getenv( "MESA_NO_ASM")) {
+ return;
+ }
if (!_mesa_x86_has_cpuid()) {
_mesa_debug(NULL, "CPUID not detected\n");
}
}
-
- if ( _mesa_getenv( "MESA_NO_ASM" ) ) {
- _mesa_x86_cpu_features = 0;
- }
-
- if ( _mesa_x86_cpu_features ) {
- _mesa_init_x86_transform_asm();
- }
-
-#ifdef USE_MMX_ASM
- if ( cpu_has_mmx ) {
- if ( _mesa_getenv( "MESA_NO_MMX" ) == 0 ) {
- _mesa_debug(NULL, "MMX cpu detected.\n");
- } else {
- _mesa_x86_cpu_features &= ~(X86_FEATURE_MMX);
- }
- }
-#endif
-
-#ifdef USE_3DNOW_ASM
- if ( cpu_has_3dnow ) {
- if ( _mesa_getenv( "MESA_NO_3DNOW" ) == 0 ) {
- _mesa_debug(NULL, "3DNow! cpu detected.\n");
- _mesa_init_3dnow_transform_asm();
- } else {
- _mesa_x86_cpu_features &= ~(X86_FEATURE_3DNOW);
- }
- }
-#endif
-
-#ifdef USE_SSE_ASM
- if ( cpu_has_xmm ) {
- if ( _mesa_getenv( "MESA_NO_SSE" ) == 0 ) {
- _mesa_debug(NULL, "SSE cpu detected.\n");
- if ( _mesa_getenv( "MESA_FORCE_SSE" ) == 0 ) {
- check_os_sse_support();
- }
- if ( cpu_has_xmm ) {
- _mesa_init_sse_transform_asm();
- }
- } else {
- _mesa_debug(NULL, "SSE cpu detected, but switched off by user.\n");
- _mesa_x86_cpu_features &= ~(X86_FEATURE_XMM);
- }
- }
-#endif
-#endif
+#endif /* USE_X86_ASM */
}
-