/*
* Mesa 3-D graphics library
- * Version: 6.5.1
*
* Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
*/
/**
*/
/* XXX these includes should probably go into imports.h or glheader.h */
-#if defined(USE_SSE_ASM) && defined(__linux__)
-#include <linux/version.h>
-#endif
#if defined(USE_SSE_ASM) && defined(__FreeBSD__)
#include <sys/types.h>
#include <sys/sysctl.h>
#endif
-#if defined(USE_SSE_ASM) && defined(__OpenBSD__)
+#if defined(USE_SSE_ASM) && (defined(__OpenBSD__) || defined(__NetBSD__))
#include <sys/param.h>
#include <sys/sysctl.h>
#include <machine/cpu.h>
#endif
+#if defined(USE_X86_64_ASM)
+#include <cpuid.h>
+#if !defined(bit_SSE4_1) && defined(bit_SSE41)
+/* XXX: clang defines bit_SSE41 instead of bit_SSE4_1 */
+#define bit_SSE4_1 bit_SSE41
+#elif !defined(bit_SSE4_1) && !defined(bit_SSE41)
+#define bit_SSE4_1 0x00080000
+#endif
+#endif
-#include "main/imports.h"
+#include "main/errors.h"
+#include "util/imports.h"
#include "common_x86_asm.h"
-int _mesa_x86_cpu_features = 0;
+/** Bitmask of X86_FEATURE_x bits */
+int _mesa_x86_cpu_features = 0x0;
+
+static int detection_debug = GL_FALSE;
/* No reason for this to be public.
*/
-extern GLuint _ASMAPI _mesa_x86_has_cpuid(void);
-extern void _ASMAPI _mesa_x86_cpuid(GLuint op, GLuint *reg_eax, GLuint *reg_ebx, GLuint *reg_ecx, GLuint *reg_edx);
-extern GLuint _ASMAPI _mesa_x86_cpuid_eax(GLuint op);
-extern GLuint _ASMAPI _mesa_x86_cpuid_ebx(GLuint op);
-extern GLuint _ASMAPI _mesa_x86_cpuid_ecx(GLuint op);
-extern GLuint _ASMAPI _mesa_x86_cpuid_edx(GLuint op);
+extern GLuint _mesa_x86_has_cpuid(void);
+extern void _mesa_x86_cpuid(GLuint op, GLuint *reg_eax, GLuint *reg_ebx, GLuint *reg_ecx, GLuint *reg_edx);
+extern GLuint _mesa_x86_cpuid_eax(GLuint op);
+extern GLuint _mesa_x86_cpuid_ebx(GLuint op);
+extern GLuint _mesa_x86_cpuid_ecx(GLuint op);
+extern GLuint _mesa_x86_cpuid_edx(GLuint op);
#if defined(USE_SSE_ASM)
* 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)
+
+#if defined(_WIN32)
#ifndef STATUS_FLOAT_MULTIPLE_TRAPS
# define STATUS_FLOAT_MULTIPLE_TRAPS (0xC00002B5L)
#endif
return EXCEPTION_CONTINUE_EXECUTION;
}
-#endif /* WIN32 */
+#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(WIN32)
+#elif defined(_WIN32)
LPTOP_LEVEL_EXCEPTION_FILTER oldFilter;
/* Install our ExceptionFilter */
#else
/* Do nothing on other platforms for now.
*/
- _mesa_debug(NULL, "Not testing OS support for SSE, leaving enabled.\n");
+ if (detection_debug)
+ _mesa_debug(NULL, "Not testing OS support for SSE, leaving enabled.\n");
#endif /* __FreeBSD__ */
}
#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 (getenv( "MESA_NO_ASM")) {
+ return;
+ }
if (!_mesa_x86_has_cpuid()) {
_mesa_debug(NULL, "CPUID not detected\n");
}
else {
- GLuint cpu_features;
+ GLuint cpu_features, cpu_features_ecx;
GLuint cpu_ext_features;
GLuint cpu_ext_info;
char cpu_vendor[13];
_mesa_x86_cpuid(0, &result, (GLuint *)(cpu_vendor + 0), (GLuint *)(cpu_vendor + 8), (GLuint *)(cpu_vendor + 4));
cpu_vendor[12] = '\0';
- _mesa_debug(NULL, "CPU vendor: %s\n", cpu_vendor);
+ if (detection_debug)
+ _mesa_debug(NULL, "CPU vendor: %s\n", cpu_vendor);
/* get cpu features */
cpu_features = _mesa_x86_cpuid_edx(1);
+ cpu_features_ecx = _mesa_x86_cpuid_ecx(1);
if (cpu_features & X86_CPU_FPU)
_mesa_x86_cpu_features |= X86_FEATURE_FPU;
_mesa_x86_cpu_features |= X86_FEATURE_XMM;
if (cpu_features & X86_CPU_XMM2)
_mesa_x86_cpu_features |= X86_FEATURE_XMM2;
+ if (cpu_features_ecx & X86_CPU_SSE4_1)
+ _mesa_x86_cpu_features |= X86_FEATURE_SSE4_1;
#endif
/* query extended cpu features */
_mesa_x86_cpuid(0x80000002+ofs, (GLuint *)(cpu_name + (16*ofs)+0), (GLuint *)(cpu_name + (16*ofs)+4), (GLuint *)(cpu_name + (16*ofs)+8), (GLuint *)(cpu_name + (16*ofs)+12));
cpu_name[48] = '\0'; /* the name should be NULL terminated, but just to be sure */
- _mesa_debug(NULL, "CPU name: %s\n", cpu_name);
+ if (detection_debug)
+ _mesa_debug(NULL, "CPU name: %s\n", cpu_name);
}
}
}
-
- 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");
+ if ( getenv( "MESA_NO_MMX" ) == 0 ) {
+ if (detection_debug)
+ _mesa_debug(NULL, "MMX cpu detected.\n");
} else {
_mesa_x86_cpu_features &= ~(X86_FEATURE_MMX);
}
#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();
+ if ( getenv( "MESA_NO_3DNOW" ) == 0 ) {
+ if (detection_debug)
+ _mesa_debug(NULL, "3DNow! cpu detected.\n");
} else {
_mesa_x86_cpu_features &= ~(X86_FEATURE_3DNOW);
}
#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();
+ if ( getenv( "MESA_NO_SSE" ) == 0 ) {
+ if (detection_debug)
+ _mesa_debug(NULL, "SSE cpu detected.\n");
+ if ( getenv( "MESA_FORCE_SSE" ) == 0 ) {
+ _mesa_check_os_sse_support();
}
} else {
_mesa_debug(NULL, "SSE cpu detected, but switched off by user.\n");
}
}
#endif
-#endif
-}
+#elif defined(USE_X86_64_ASM)
+ {
+ unsigned int eax, ebx, ecx, edx;
+
+ /* Always available on x86-64. */
+ _mesa_x86_cpu_features |= X86_FEATURE_XMM | X86_FEATURE_XMM2;
+
+ if (!__get_cpuid(1, &eax, &ebx, &ecx, &edx))
+ return;
+
+ if (ecx & bit_SSE4_1)
+ _mesa_x86_cpu_features |= X86_FEATURE_SSE4_1;
+ }
+#endif /* USE_X86_64_ASM */
+
+ (void) detection_debug;
+}
projects / mesa.git / blobdiff