mirror of
https://github.com/reactos/reactos.git
synced 2024-08-20 02:13:29 +00:00
318 lines
8.8 KiB
C
318 lines
8.8 KiB
C
/*
|
|
* Mesa 3-D graphics library
|
|
* Version: 6.5.1
|
|
*
|
|
* Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included
|
|
* in all copies or substantial portions of the Software.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/**
|
|
* \file common_x86.c
|
|
*
|
|
* Check CPU capabilities & initialize optimized funtions for this particular
|
|
* processor.
|
|
*
|
|
* Changed by Andre Werthmann for using the new SSE functions.
|
|
*
|
|
* \author Holger Waechtler <holger@akaflieg.extern.tu-berlin.de>
|
|
* \author Andre Werthmann <wertmann@cs.uni-potsdam.de>
|
|
*/
|
|
|
|
/* 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__)
|
|
#include <sys/param.h>
|
|
#include <sys/sysctl.h>
|
|
#include <machine/cpu.h>
|
|
#endif
|
|
|
|
#include "main/imports.h"
|
|
#include "common_x86_asm.h"
|
|
|
|
#include <pseh/pseh2.h>
|
|
|
|
|
|
/** 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);
|
|
|
|
|
|
#if defined(USE_SSE_ASM)
|
|
/*
|
|
* We must verify that the Streaming SIMD Extensions are truly supported
|
|
* on this processor before we go ahead and hook out the optimized code.
|
|
*
|
|
* However, I have been told by Alan Cox that all 2.4 (and later) Linux
|
|
* 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 );
|
|
|
|
|
|
/**
|
|
* 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__)
|
|
{
|
|
int ret, enabled;
|
|
unsigned int len;
|
|
len = sizeof(enabled);
|
|
ret = sysctlbyname("hw.instruction_sse", &enabled, &len, NULL, 0);
|
|
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)
|
|
if ( cpu_has_xmm ) {
|
|
_mesa_debug(NULL, "Testing OS support for SSE...\n");
|
|
|
|
_SEH2_TRY
|
|
{
|
|
_mesa_test_os_sse_support();
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
if(_SEH2_GetExceptionCode() == EXCEPTION_ILLEGAL_INSTRUCTION)
|
|
_mesa_x86_cpu_features &= ~(X86_FEATURE_XMM);
|
|
}
|
|
_SEH2_END;
|
|
|
|
if ( cpu_has_xmm ) {
|
|
_mesa_debug(NULL, "Yes.\n");
|
|
} else {
|
|
_mesa_debug(NULL, "No!\n");
|
|
}
|
|
}
|
|
|
|
if ( cpu_has_xmm ) {
|
|
_mesa_debug(NULL, "Testing OS support for SSE unmasked exceptions...\n");
|
|
|
|
_SEH2_TRY
|
|
{
|
|
_mesa_test_os_sse_exception_support();
|
|
}
|
|
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
|
|
{
|
|
if(_SEH2_GetExceptionCode() == EXCEPTION_ILLEGAL_INSTRUCTION)
|
|
_mesa_x86_cpu_features &= ~(X86_FEATURE_XMM);
|
|
}
|
|
_SEH2_END;
|
|
|
|
if ( cpu_has_xmm ) {
|
|
_mesa_debug(NULL, "Yes.\n");
|
|
} else {
|
|
_mesa_debug(NULL, "No!\n");
|
|
}
|
|
}
|
|
|
|
if ( cpu_has_xmm ) {
|
|
_mesa_debug(NULL, "Tests of OS support for SSE passed.\n");
|
|
} else {
|
|
_mesa_debug(NULL, "Tests of OS support for SSE failed!\n");
|
|
}
|
|
#else
|
|
/* Do nothing on other platforms for now.
|
|
*/
|
|
if (detection_debug)
|
|
_mesa_debug(NULL, "Not testing OS support for SSE, leaving enabled.\n");
|
|
#endif /* __FreeBSD__ */
|
|
}
|
|
|
|
#endif /* USE_SSE_ASM */
|
|
|
|
|
|
/**
|
|
* 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 = 0x0;
|
|
|
|
if (_mesa_getenv( "MESA_NO_ASM")) {
|
|
return;
|
|
}
|
|
|
|
if (!_mesa_x86_has_cpuid()) {
|
|
_mesa_debug(NULL, "CPUID not detected\n");
|
|
}
|
|
else {
|
|
GLuint cpu_features;
|
|
GLuint cpu_ext_features;
|
|
GLuint cpu_ext_info;
|
|
char cpu_vendor[13];
|
|
GLuint result;
|
|
|
|
/* get vendor name */
|
|
_mesa_x86_cpuid(0, &result, (GLuint *)(cpu_vendor + 0), (GLuint *)(cpu_vendor + 8), (GLuint *)(cpu_vendor + 4));
|
|
cpu_vendor[12] = '\0';
|
|
|
|
if (detection_debug)
|
|
_mesa_debug(NULL, "CPU vendor: %s\n", cpu_vendor);
|
|
|
|
/* get cpu features */
|
|
cpu_features = _mesa_x86_cpuid_edx(1);
|
|
|
|
if (cpu_features & X86_CPU_FPU)
|
|
_mesa_x86_cpu_features |= X86_FEATURE_FPU;
|
|
if (cpu_features & X86_CPU_CMOV)
|
|
_mesa_x86_cpu_features |= X86_FEATURE_CMOV;
|
|
|
|
#ifdef USE_MMX_ASM
|
|
if (cpu_features & X86_CPU_MMX)
|
|
_mesa_x86_cpu_features |= X86_FEATURE_MMX;
|
|
#endif
|
|
|
|
#ifdef USE_SSE_ASM
|
|
if (cpu_features & X86_CPU_XMM)
|
|
_mesa_x86_cpu_features |= X86_FEATURE_XMM;
|
|
if (cpu_features & X86_CPU_XMM2)
|
|
_mesa_x86_cpu_features |= X86_FEATURE_XMM2;
|
|
#endif
|
|
|
|
/* query extended cpu features */
|
|
if ((cpu_ext_info = _mesa_x86_cpuid_eax(0x80000000)) > 0x80000000) {
|
|
if (cpu_ext_info >= 0x80000001) {
|
|
|
|
cpu_ext_features = _mesa_x86_cpuid_edx(0x80000001);
|
|
|
|
if (cpu_features & X86_CPU_MMX) {
|
|
|
|
#ifdef USE_3DNOW_ASM
|
|
if (cpu_ext_features & X86_CPUEXT_3DNOW)
|
|
_mesa_x86_cpu_features |= X86_FEATURE_3DNOW;
|
|
if (cpu_ext_features & X86_CPUEXT_3DNOW_EXT)
|
|
_mesa_x86_cpu_features |= X86_FEATURE_3DNOWEXT;
|
|
#endif
|
|
|
|
#ifdef USE_MMX_ASM
|
|
if (cpu_ext_features & X86_CPUEXT_MMX_EXT)
|
|
_mesa_x86_cpu_features |= X86_FEATURE_MMXEXT;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/* query cpu name */
|
|
if (cpu_ext_info >= 0x80000002) {
|
|
GLuint ofs;
|
|
char cpu_name[49];
|
|
for (ofs = 0; ofs < 3; ofs++)
|
|
_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 */
|
|
|
|
if (detection_debug)
|
|
_mesa_debug(NULL, "CPU name: %s\n", cpu_name);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
#ifdef USE_MMX_ASM
|
|
if ( cpu_has_mmx ) {
|
|
if ( _mesa_getenv( "MESA_NO_MMX" ) == 0 ) {
|
|
if (detection_debug)
|
|
_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 ) {
|
|
if (detection_debug)
|
|
_mesa_debug(NULL, "3DNow! cpu detected.\n");
|
|
} else {
|
|
_mesa_x86_cpu_features &= ~(X86_FEATURE_3DNOW);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef USE_SSE_ASM
|
|
if ( cpu_has_xmm ) {
|
|
if ( _mesa_getenv( "MESA_NO_SSE" ) == 0 ) {
|
|
if (detection_debug)
|
|
_mesa_debug(NULL, "SSE cpu detected.\n");
|
|
if ( _mesa_getenv( "MESA_FORCE_SSE" ) == 0 ) {
|
|
_mesa_check_os_sse_support();
|
|
}
|
|
} else {
|
|
_mesa_debug(NULL, "SSE cpu detected, but switched off by user.\n");
|
|
_mesa_x86_cpu_features &= ~(X86_FEATURE_XMM);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#endif /* USE_X86_ASM */
|
|
|
|
(void) detection_debug;
|
|
}
|