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Diffstat (limited to 'distrib/sdl-1.2.12/src/cpuinfo/SDL_cpuinfo.c')
-rw-r--r--distrib/sdl-1.2.12/src/cpuinfo/SDL_cpuinfo.c446
1 files changed, 0 insertions, 446 deletions
diff --git a/distrib/sdl-1.2.12/src/cpuinfo/SDL_cpuinfo.c b/distrib/sdl-1.2.12/src/cpuinfo/SDL_cpuinfo.c
deleted file mode 100644
index be3987e..0000000
--- a/distrib/sdl-1.2.12/src/cpuinfo/SDL_cpuinfo.c
+++ /dev/null
@@ -1,446 +0,0 @@
-/*
- SDL - Simple DirectMedia Layer
- Copyright (C) 1997-2006 Sam Lantinga
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with this library; if not, write to the Free Software
- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-
- Sam Lantinga
- slouken@libsdl.org
-*/
-#include "SDL_config.h"
-
-/* CPU feature detection for SDL */
-
-#include "SDL.h"
-#include "SDL_cpuinfo.h"
-
-#if defined(__MACOSX__) && defined(__ppc__)
-#include <sys/sysctl.h> /* For AltiVec check */
-#elif SDL_ALTIVEC_BLITTERS && HAVE_SETJMP
-#include <signal.h>
-#include <setjmp.h>
-#endif
-
-#define CPU_HAS_RDTSC 0x00000001
-#define CPU_HAS_MMX 0x00000002
-#define CPU_HAS_MMXEXT 0x00000004
-#define CPU_HAS_3DNOW 0x00000010
-#define CPU_HAS_3DNOWEXT 0x00000020
-#define CPU_HAS_SSE 0x00000040
-#define CPU_HAS_SSE2 0x00000080
-#define CPU_HAS_ALTIVEC 0x00000100
-
-#if SDL_ALTIVEC_BLITTERS && HAVE_SETJMP && !__MACOSX__
-/* This is the brute force way of detecting instruction sets...
- the idea is borrowed from the libmpeg2 library - thanks!
- */
-static jmp_buf jmpbuf;
-static void illegal_instruction(int sig)
-{
- longjmp(jmpbuf, 1);
-}
-#endif /* HAVE_SETJMP */
-
-static __inline__ int CPU_haveCPUID(void)
-{
- int has_CPUID = 0;
-#if defined(__GNUC__) && defined(i386)
- __asm__ (
-" pushfl # Get original EFLAGS \n"
-" popl %%eax \n"
-" movl %%eax,%%ecx \n"
-" xorl $0x200000,%%eax # Flip ID bit in EFLAGS \n"
-" pushl %%eax # Save new EFLAGS value on stack \n"
-" popfl # Replace current EFLAGS value \n"
-" pushfl # Get new EFLAGS \n"
-" popl %%eax # Store new EFLAGS in EAX \n"
-" xorl %%ecx,%%eax # Can not toggle ID bit, \n"
-" jz 1f # Processor=80486 \n"
-" movl $1,%0 # We have CPUID support \n"
-"1: \n"
- : "=m" (has_CPUID)
- :
- : "%eax", "%ecx"
- );
-#elif defined(__GNUC__) && defined(__x86_64__)
-/* Technically, if this is being compiled under __x86_64__ then it has
-CPUid by definition. But it's nice to be able to prove it. :) */
- __asm__ (
-" pushfq # Get original EFLAGS \n"
-" popq %%rax \n"
-" movq %%rax,%%rcx \n"
-" xorl $0x200000,%%eax # Flip ID bit in EFLAGS \n"
-" pushq %%rax # Save new EFLAGS value on stack \n"
-" popfq # Replace current EFLAGS value \n"
-" pushfq # Get new EFLAGS \n"
-" popq %%rax # Store new EFLAGS in EAX \n"
-" xorl %%ecx,%%eax # Can not toggle ID bit, \n"
-" jz 1f # Processor=80486 \n"
-" movl $1,%0 # We have CPUID support \n"
-"1: \n"
- : "=m" (has_CPUID)
- :
- : "%rax", "%rcx"
- );
-#elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
- __asm {
- pushfd ; Get original EFLAGS
- pop eax
- mov ecx, eax
- xor eax, 200000h ; Flip ID bit in EFLAGS
- push eax ; Save new EFLAGS value on stack
- popfd ; Replace current EFLAGS value
- pushfd ; Get new EFLAGS
- pop eax ; Store new EFLAGS in EAX
- xor eax, ecx ; Can not toggle ID bit,
- jz done ; Processor=80486
- mov has_CPUID,1 ; We have CPUID support
-done:
- }
-#elif defined(__sun) && defined(__i386)
- __asm (
-" pushfl \n"
-" popl %eax \n"
-" movl %eax,%ecx \n"
-" xorl $0x200000,%eax \n"
-" pushl %eax \n"
-" popfl \n"
-" pushfl \n"
-" popl %eax \n"
-" xorl %ecx,%eax \n"
-" jz 1f \n"
-" movl $1,-8(%ebp) \n"
-"1: \n"
- );
-#elif defined(__sun) && defined(__amd64)
- __asm (
-" pushfq \n"
-" popq %rax \n"
-" movq %rax,%rcx \n"
-" xorl $0x200000,%eax \n"
-" pushq %rax \n"
-" popfq \n"
-" pushfq \n"
-" popq %rax \n"
-" xorl %ecx,%eax \n"
-" jz 1f \n"
-" movl $1,-8(%rbp) \n"
-"1: \n"
- );
-#endif
- return has_CPUID;
-}
-
-static __inline__ int CPU_getCPUIDFeatures(void)
-{
- int features = 0;
-#if defined(__GNUC__) && ( defined(i386) || defined(__x86_64__) )
- __asm__ (
-" movl %%ebx,%%edi\n"
-" xorl %%eax,%%eax # Set up for CPUID instruction \n"
-" cpuid # Get and save vendor ID \n"
-" cmpl $1,%%eax # Make sure 1 is valid input for CPUID\n"
-" jl 1f # We dont have the CPUID instruction\n"
-" xorl %%eax,%%eax \n"
-" incl %%eax \n"
-" cpuid # Get family/model/stepping/features\n"
-" movl %%edx,%0 \n"
-"1: \n"
-" movl %%edi,%%ebx\n"
- : "=m" (features)
- :
- : "%eax", "%ecx", "%edx", "%edi"
- );
-#elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
- __asm {
- xor eax, eax ; Set up for CPUID instruction
- cpuid ; Get and save vendor ID
- cmp eax, 1 ; Make sure 1 is valid input for CPUID
- jl done ; We dont have the CPUID instruction
- xor eax, eax
- inc eax
- cpuid ; Get family/model/stepping/features
- mov features, edx
-done:
- }
-#elif defined(__sun) && (defined(__i386) || defined(__amd64))
- __asm(
-" movl %ebx,%edi\n"
-" xorl %eax,%eax \n"
-" cpuid \n"
-" cmpl $1,%eax \n"
-" jl 1f \n"
-" xorl %eax,%eax \n"
-" incl %eax \n"
-" cpuid \n"
-#ifdef __i386
-" movl %edx,-8(%ebp) \n"
-#else
-" movl %edx,-8(%rbp) \n"
-#endif
-"1: \n"
-" movl %edi,%ebx\n" );
-#endif
- return features;
-}
-
-static __inline__ int CPU_getCPUIDFeaturesExt(void)
-{
- int features = 0;
-#if defined(__GNUC__) && (defined(i386) || defined (__x86_64__) )
- __asm__ (
-" movl %%ebx,%%edi\n"
-" movl $0x80000000,%%eax # Query for extended functions \n"
-" cpuid # Get extended function limit \n"
-" cmpl $0x80000001,%%eax \n"
-" jl 1f # Nope, we dont have function 800000001h\n"
-" movl $0x80000001,%%eax # Setup extended function 800000001h\n"
-" cpuid # and get the information \n"
-" movl %%edx,%0 \n"
-"1: \n"
-" movl %%edi,%%ebx\n"
- : "=m" (features)
- :
- : "%eax", "%ecx", "%edx", "%edi"
- );
-#elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
- __asm {
- mov eax,80000000h ; Query for extended functions
- cpuid ; Get extended function limit
- cmp eax,80000001h
- jl done ; Nope, we dont have function 800000001h
- mov eax,80000001h ; Setup extended function 800000001h
- cpuid ; and get the information
- mov features,edx
-done:
- }
-#elif defined(__sun) && ( defined(__i386) || defined(__amd64) )
- __asm (
-" movl %ebx,%edi\n"
-" movl $0x80000000,%eax \n"
-" cpuid \n"
-" cmpl $0x80000001,%eax \n"
-" jl 1f \n"
-" movl $0x80000001,%eax \n"
-" cpuid \n"
-#ifdef __i386
-" movl %edx,-8(%ebp) \n"
-#else
-" movl %edx,-8(%rbp) \n"
-#endif
-"1: \n"
-" movl %edi,%ebx\n"
- );
-#endif
- return features;
-}
-
-static __inline__ int CPU_haveRDTSC(void)
-{
- if ( CPU_haveCPUID() ) {
- return (CPU_getCPUIDFeatures() & 0x00000010);
- }
- return 0;
-}
-
-static __inline__ int CPU_haveMMX(void)
-{
- if ( CPU_haveCPUID() ) {
- return (CPU_getCPUIDFeatures() & 0x00800000);
- }
- return 0;
-}
-
-static __inline__ int CPU_haveMMXExt(void)
-{
- if ( CPU_haveCPUID() ) {
- return (CPU_getCPUIDFeaturesExt() & 0x00400000);
- }
- return 0;
-}
-
-static __inline__ int CPU_have3DNow(void)
-{
- if ( CPU_haveCPUID() ) {
- return (CPU_getCPUIDFeaturesExt() & 0x80000000);
- }
- return 0;
-}
-
-static __inline__ int CPU_have3DNowExt(void)
-{
- if ( CPU_haveCPUID() ) {
- return (CPU_getCPUIDFeaturesExt() & 0x40000000);
- }
- return 0;
-}
-
-static __inline__ int CPU_haveSSE(void)
-{
- if ( CPU_haveCPUID() ) {
- return (CPU_getCPUIDFeatures() & 0x02000000);
- }
- return 0;
-}
-
-static __inline__ int CPU_haveSSE2(void)
-{
- if ( CPU_haveCPUID() ) {
- return (CPU_getCPUIDFeatures() & 0x04000000);
- }
- return 0;
-}
-
-static __inline__ int CPU_haveAltiVec(void)
-{
- volatile int altivec = 0;
-#if defined(__MACOSX__) && defined(__ppc__)
- int selectors[2] = { CTL_HW, HW_VECTORUNIT };
- int hasVectorUnit = 0;
- size_t length = sizeof(hasVectorUnit);
- int error = sysctl(selectors, 2, &hasVectorUnit, &length, NULL, 0);
- if( 0 == error )
- altivec = (hasVectorUnit != 0);
-#elif SDL_ALTIVEC_BLITTERS && HAVE_SETJMP
- void (*handler)(int sig);
- handler = signal(SIGILL, illegal_instruction);
- if ( setjmp(jmpbuf) == 0 ) {
- asm volatile ("mtspr 256, %0\n\t"
- "vand %%v0, %%v0, %%v0"
- :
- : "r" (-1));
- altivec = 1;
- }
- signal(SIGILL, handler);
-#endif
- return altivec;
-}
-
-static Uint32 SDL_CPUFeatures = 0xFFFFFFFF;
-
-static Uint32 SDL_GetCPUFeatures(void)
-{
- if ( SDL_CPUFeatures == 0xFFFFFFFF ) {
- SDL_CPUFeatures = 0;
- if ( CPU_haveRDTSC() ) {
- SDL_CPUFeatures |= CPU_HAS_RDTSC;
- }
- if ( CPU_haveMMX() ) {
- SDL_CPUFeatures |= CPU_HAS_MMX;
- }
- if ( CPU_haveMMXExt() ) {
- SDL_CPUFeatures |= CPU_HAS_MMXEXT;
- }
- if ( CPU_have3DNow() ) {
- SDL_CPUFeatures |= CPU_HAS_3DNOW;
- }
- if ( CPU_have3DNowExt() ) {
- SDL_CPUFeatures |= CPU_HAS_3DNOWEXT;
- }
- if ( CPU_haveSSE() ) {
- SDL_CPUFeatures |= CPU_HAS_SSE;
- }
- if ( CPU_haveSSE2() ) {
- SDL_CPUFeatures |= CPU_HAS_SSE2;
- }
- if ( CPU_haveAltiVec() ) {
- SDL_CPUFeatures |= CPU_HAS_ALTIVEC;
- }
- }
- return SDL_CPUFeatures;
-}
-
-SDL_bool SDL_HasRDTSC(void)
-{
- if ( SDL_GetCPUFeatures() & CPU_HAS_RDTSC ) {
- return SDL_TRUE;
- }
- return SDL_FALSE;
-}
-
-SDL_bool SDL_HasMMX(void)
-{
- if ( SDL_GetCPUFeatures() & CPU_HAS_MMX ) {
- return SDL_TRUE;
- }
- return SDL_FALSE;
-}
-
-SDL_bool SDL_HasMMXExt(void)
-{
- if ( SDL_GetCPUFeatures() & CPU_HAS_MMXEXT ) {
- return SDL_TRUE;
- }
- return SDL_FALSE;
-}
-
-SDL_bool SDL_Has3DNow(void)
-{
- if ( SDL_GetCPUFeatures() & CPU_HAS_3DNOW ) {
- return SDL_TRUE;
- }
- return SDL_FALSE;
-}
-
-SDL_bool SDL_Has3DNowExt(void)
-{
- if ( SDL_GetCPUFeatures() & CPU_HAS_3DNOWEXT ) {
- return SDL_TRUE;
- }
- return SDL_FALSE;
-}
-
-SDL_bool SDL_HasSSE(void)
-{
- if ( SDL_GetCPUFeatures() & CPU_HAS_SSE ) {
- return SDL_TRUE;
- }
- return SDL_FALSE;
-}
-
-SDL_bool SDL_HasSSE2(void)
-{
- if ( SDL_GetCPUFeatures() & CPU_HAS_SSE2 ) {
- return SDL_TRUE;
- }
- return SDL_FALSE;
-}
-
-SDL_bool SDL_HasAltiVec(void)
-{
- if ( SDL_GetCPUFeatures() & CPU_HAS_ALTIVEC ) {
- return SDL_TRUE;
- }
- return SDL_FALSE;
-}
-
-#ifdef TEST_MAIN
-
-#include <stdio.h>
-
-int main()
-{
- printf("RDTSC: %d\n", SDL_HasRDTSC());
- printf("MMX: %d\n", SDL_HasMMX());
- printf("MMXExt: %d\n", SDL_HasMMXExt());
- printf("3DNow: %d\n", SDL_Has3DNow());
- printf("3DNowExt: %d\n", SDL_Has3DNowExt());
- printf("SSE: %d\n", SDL_HasSSE());
- printf("SSE2: %d\n", SDL_HasSSE2());
- printf("AltiVec: %d\n", SDL_HasAltiVec());
- return 0;
-}
-
-#endif /* TEST_MAIN */
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