src/cpuinfo/SDL_cpuinfo.c
author Sam Lantinga <slouken@libsdl.org>
Tue, 20 Jun 2006 05:35:44 +0000
changeset 1864 7bea26ad3130
parent 1590 96d8c3fec479
child 1895 c121d94672cb
child 4159 a1b03ba2fcd0
permissions -rw-r--r--
I think this fixes bug #244
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2006 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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/* CPU feature detection for SDL */
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#include "SDL.h"
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#include "SDL_cpuinfo.h"
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#if defined(__MACOSX__) && defined(__ppc__)
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#include <sys/sysctl.h> /* For AltiVec check */
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#elif SDL_ALTIVEC_BLITTERS && HAVE_SETJMP
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#include <signal.h>
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#include <setjmp.h>
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#endif
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#define CPU_HAS_RDTSC	0x00000001
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#define CPU_HAS_MMX	0x00000002
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#define CPU_HAS_MMXEXT	0x00000004
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#define CPU_HAS_3DNOW	0x00000010
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#define CPU_HAS_3DNOWEXT 0x00000020
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#define CPU_HAS_SSE	0x00000040
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#define CPU_HAS_SSE2	0x00000080
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#define CPU_HAS_ALTIVEC	0x00000100
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#if SDL_ALTIVEC_BLITTERS && HAVE_SETJMP && !__MACOSX__
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/* This is the brute force way of detecting instruction sets...
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   the idea is borrowed from the libmpeg2 library - thanks!
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 */
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static jmp_buf jmpbuf;
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static void illegal_instruction(int sig)
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{
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	longjmp(jmpbuf, 1);
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}
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#endif /* HAVE_SETJMP */
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static __inline__ int CPU_haveCPUID(void)
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{
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	int has_CPUID = 0;
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#if defined(__GNUC__) && defined(i386)
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	__asm__ (
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"        pushfl                      # Get original EFLAGS             \n"
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"        popl    %%eax                                                 \n"
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"        movl    %%eax,%%ecx                                           \n"
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"        xorl    $0x200000,%%eax     # Flip ID bit in EFLAGS           \n"
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"        pushl   %%eax               # Save new EFLAGS value on stack  \n"
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"        popfl                       # Replace current EFLAGS value    \n"
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"        pushfl                      # Get new EFLAGS                  \n"
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"        popl    %%eax               # Store new EFLAGS in EAX         \n"
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"        xorl    %%ecx,%%eax         # Can not toggle ID bit,          \n"
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"        jz      1f                  # Processor=80486                 \n"
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"        movl    $1,%0               # We have CPUID support           \n"
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"1:                                                                    \n"
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	: "=m" (has_CPUID)
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	:
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	: "%eax", "%ecx"
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	);
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#elif defined(__GNUC__) && defined(__x86_64__)
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/* Technically, if this is being compiled under __x86_64__ then it has 
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CPUid by definition.  But it's nice to be able to prove it.  :)      */
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	__asm__ (
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"        pushfq                      # Get original EFLAGS             \n"
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"        popq    %%rax                                                 \n"
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"        movq    %%rax,%%rcx                                           \n"
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"        xorl    $0x200000,%%eax     # Flip ID bit in EFLAGS           \n"
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"        pushq   %%rax               # Save new EFLAGS value on stack  \n"
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"        popfq                       # Replace current EFLAGS value    \n"
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"        pushfq                      # Get new EFLAGS                  \n"
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"        popq    %%rax               # Store new EFLAGS in EAX         \n"
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"        xorl    %%ecx,%%eax         # Can not toggle ID bit,          \n"
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"        jz      1f                  # Processor=80486                 \n"
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"        movl    $1,%0               # We have CPUID support           \n"
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"1:                                                                    \n"
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	: "=m" (has_CPUID)
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	:
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	: "%rax", "%rcx"
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	);
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#elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
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	__asm {
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        pushfd                      ; Get original EFLAGS
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        pop     eax
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        mov     ecx, eax
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        xor     eax, 200000h        ; Flip ID bit in EFLAGS
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        push    eax                 ; Save new EFLAGS value on stack
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        popfd                       ; Replace current EFLAGS value
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        pushfd                      ; Get new EFLAGS
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        pop     eax                 ; Store new EFLAGS in EAX
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        xor     eax, ecx            ; Can not toggle ID bit,
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        jz      done                ; Processor=80486
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        mov     has_CPUID,1         ; We have CPUID support
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done:
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	}
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#elif defined(__sun) && defined(__i386)
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	__asm (
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"       pushfl                 \n"
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"	popl    %eax           \n"
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"	movl    %eax,%ecx      \n"
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"	xorl    $0x200000,%eax \n"
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"	pushl   %eax           \n"
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"	popfl                  \n"
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"	pushfl                 \n"
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diff changeset
   121
"	popl    %eax           \n"
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
   122
"	xorl    %ecx,%eax      \n"
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
   123
"	jz      1f             \n"
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
   124
"	movl    $1,-8(%ebp)    \n"
1229
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
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parents: 1198
diff changeset
   125
"1:                            \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
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diff changeset
   126
	);
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
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diff changeset
   127
#elif defined(__sun) && defined(__amd64)
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
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diff changeset
   128
	__asm (
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
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diff changeset
   129
"       pushfq                 \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
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parents: 1198
diff changeset
   130
"       popq    %rax           \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
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parents: 1198
diff changeset
   131
"       movq    %rax,%rcx      \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
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parents: 1198
diff changeset
   132
"       xorl    $0x200000,%eax \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
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parents: 1198
diff changeset
   133
"       pushq   %rax           \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
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parents: 1198
diff changeset
   134
"       popfq                  \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
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parents: 1198
diff changeset
   135
"       pushfq                 \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
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parents: 1198
diff changeset
   136
"       popq    %rax           \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   137
"       xorl    %ecx,%eax      \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   138
"       jz      1f             \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   139
"       movl    $1,-8(%rbp)    \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
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parents: 1198
diff changeset
   140
"1:                            \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
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diff changeset
   141
	);
745
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diff changeset
   142
#endif
71ee03909f42 Greatly simplified the SDL CPU info code
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   143
	return has_CPUID;
71ee03909f42 Greatly simplified the SDL CPU info code
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diff changeset
   144
}
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   145
1426
ef9a9064bff2 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   146
static __inline__ int CPU_getCPUIDFeatures(void)
745
71ee03909f42 Greatly simplified the SDL CPU info code
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diff changeset
   147
{
71ee03909f42 Greatly simplified the SDL CPU info code
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diff changeset
   148
	int features = 0;
881
9eb85a211abd Date: Tue, 30 Mar 2004 18:18:13 -0600
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parents: 804
diff changeset
   149
#if defined(__GNUC__) && ( defined(i386) || defined(__x86_64__) )
745
71ee03909f42 Greatly simplified the SDL CPU info code
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diff changeset
   150
	__asm__ (
785
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   151
"        movl    %%ebx,%%edi\n"
745
71ee03909f42 Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents: 739
diff changeset
   152
"        xorl    %%eax,%%eax         # Set up for CPUID instruction    \n"
71ee03909f42 Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents: 739
diff changeset
   153
"        cpuid                       # Get and save vendor ID          \n"
71ee03909f42 Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents: 739
diff changeset
   154
"        cmpl    $1,%%eax            # Make sure 1 is valid input for CPUID\n"
71ee03909f42 Greatly simplified the SDL CPU info code
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parents: 739
diff changeset
   155
"        jl      1f                  # We dont have the CPUID instruction\n"
71ee03909f42 Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents: 739
diff changeset
   156
"        xorl    %%eax,%%eax                                           \n"
71ee03909f42 Greatly simplified the SDL CPU info code
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parents: 739
diff changeset
   157
"        incl    %%eax                                                 \n"
71ee03909f42 Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents: 739
diff changeset
   158
"        cpuid                       # Get family/model/stepping/features\n"
71ee03909f42 Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents: 739
diff changeset
   159
"        movl    %%edx,%0                                              \n"
71ee03909f42 Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents: 739
diff changeset
   160
"1:                                                                    \n"
785
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   161
"        movl    %%edi,%%ebx\n"
784
a2dde6aff60e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 778
diff changeset
   162
	: "=m" (features)
745
71ee03909f42 Greatly simplified the SDL CPU info code
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parents: 739
diff changeset
   163
	:
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
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parents: 881
diff changeset
   164
	: "%eax", "%ecx", "%edx", "%edi"
745
71ee03909f42 Greatly simplified the SDL CPU info code
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parents: 739
diff changeset
   165
	);
1442
e3242177fe4a Updated OS/2 build, yay!
Sam Lantinga <slouken@libsdl.org>
parents: 1426
diff changeset
   166
#elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
749
06cdd106d61c Updated Visual C++ support
Sam Lantinga <slouken@libsdl.org>
parents: 747
diff changeset
   167
	__asm {
745
71ee03909f42 Greatly simplified the SDL CPU info code
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parents: 739
diff changeset
   168
        xor     eax, eax            ; Set up for CPUID instruction
71ee03909f42 Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents: 739
diff changeset
   169
        cpuid                       ; Get and save vendor ID
71ee03909f42 Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents: 739
diff changeset
   170
        cmp     eax, 1              ; Make sure 1 is valid input for CPUID
71ee03909f42 Greatly simplified the SDL CPU info code
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parents: 739
diff changeset
   171
        jl      done                ; We dont have the CPUID instruction
71ee03909f42 Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents: 739
diff changeset
   172
        xor     eax, eax
71ee03909f42 Greatly simplified the SDL CPU info code
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parents: 739
diff changeset
   173
        inc     eax
71ee03909f42 Greatly simplified the SDL CPU info code
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parents: 739
diff changeset
   174
        cpuid                       ; Get family/model/stepping/features
71ee03909f42 Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents: 739
diff changeset
   175
        mov     features, edx
71ee03909f42 Greatly simplified the SDL CPU info code
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parents: 739
diff changeset
   176
done:
71ee03909f42 Greatly simplified the SDL CPU info code
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parents: 739
diff changeset
   177
	}
1864
7bea26ad3130 I think this fixes bug #244
Sam Lantinga <slouken@libsdl.org>
parents: 1590
diff changeset
   178
#elif defined(__sun) && (defined(__i386) || defined(__amd64))
1229
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
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parents: 1198
diff changeset
   179
	    __asm(
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   180
"        movl    %ebx,%edi\n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   181
"        xorl    %eax,%eax         \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   182
"        cpuid                     \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   183
"        cmpl    $1,%eax           \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   184
"        jl      1f                \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   185
"        xorl    %eax,%eax         \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   186
"        incl    %eax              \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   187
"        cpuid                     \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   188
#ifdef __i386
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   189
"        movl    %edx,-8(%ebp)     \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   190
#else
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   191
"        movl    %edx,-8(%rbp)     \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   192
#endif
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   193
"1:                                \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   194
"        movl    %edi,%ebx\n" );
745
71ee03909f42 Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents: 739
diff changeset
   195
#endif
71ee03909f42 Greatly simplified the SDL CPU info code
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parents: 739
diff changeset
   196
	return features;
71ee03909f42 Greatly simplified the SDL CPU info code
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parents: 739
diff changeset
   197
}
71ee03909f42 Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents: 739
diff changeset
   198
1426
ef9a9064bff2 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   199
static __inline__ int CPU_getCPUIDFeaturesExt(void)
785
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
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parents: 784
diff changeset
   200
{
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
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parents: 784
diff changeset
   201
	int features = 0;
881
9eb85a211abd Date: Tue, 30 Mar 2004 18:18:13 -0600
Sam Lantinga <slouken@libsdl.org>
parents: 804
diff changeset
   202
#if defined(__GNUC__) && (defined(i386) || defined (__x86_64__) )
785
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   203
	__asm__ (
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   204
"        movl    %%ebx,%%edi\n"
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   205
"        movl    $0x80000000,%%eax   # Query for extended functions    \n"
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   206
"        cpuid                       # Get extended function limit     \n"
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   207
"        cmpl    $0x80000001,%%eax                                     \n"
787
07760c8854d1 Date: Sat, 24 Jan 2004 14:49:58 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 786
diff changeset
   208
"        jl      1f                  # Nope, we dont have function 800000001h\n"
785
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   209
"        movl    $0x80000001,%%eax   # Setup extended function 800000001h\n"
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   210
"        cpuid                       # and get the information         \n"
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   211
"        movl    %%edx,%0                                              \n"
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   212
"1:                                                                    \n"
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   213
"        movl    %%edi,%%ebx\n"
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   214
	: "=m" (features)
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   215
	:
887
b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 881
diff changeset
   216
	: "%eax", "%ecx", "%edx", "%edi"
785
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   217
	);
1442
e3242177fe4a Updated OS/2 build, yay!
Sam Lantinga <slouken@libsdl.org>
parents: 1426
diff changeset
   218
#elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
785
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   219
	__asm {
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   220
        mov     eax,80000000h       ; Query for extended functions
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   221
        cpuid                       ; Get extended function limit
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   222
        cmp     eax,80000001h
787
07760c8854d1 Date: Sat, 24 Jan 2004 14:49:58 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 786
diff changeset
   223
        jl      done                ; Nope, we dont have function 800000001h
785
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   224
        mov     eax,80000001h       ; Setup extended function 800000001h
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   225
        cpuid                       ; and get the information
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   226
        mov     features,edx
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   227
done:
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   228
	}
1229
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   229
#elif defined(__sun) && ( defined(__i386) || defined(__amd64) )
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
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parents: 1198
diff changeset
   230
	    __asm (
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   231
"        movl    %ebx,%edi\n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   232
"        movl    $0x80000000,%eax \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   233
"        cpuid                    \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   234
"        cmpl    $0x80000001,%eax \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   235
"        jl      1f               \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   236
"        movl    $0x80000001,%eax \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   237
"        cpuid                    \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   238
#ifdef __i386
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   239
"        movl    %edx,-8(%ebp)   \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   240
#else
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   241
"        movl    %edx,-8(%rbp)   \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   242
#endif
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   243
"1:                               \n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   244
"        movl    %edi,%ebx\n"
1430f5fe092a Patch from Michael Bonfils to add CPUID support for x86 Solaris.
Ryan C. Gordon <icculus@icculus.org>
parents: 1198
diff changeset
   245
	    );
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#endif
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	return features;
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}
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static __inline__ int CPU_haveRDTSC(void)
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{
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	if ( CPU_haveCPUID() ) {
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		return (CPU_getCPUIDFeatures() & 0x00000010);
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	}
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	return 0;
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}
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static __inline__ int CPU_haveMMX(void)
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{
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	if ( CPU_haveCPUID() ) {
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		return (CPU_getCPUIDFeatures() & 0x00800000);
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	}
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	return 0;
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   264
}
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static __inline__ int CPU_haveMMXExt(void)
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{
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	if ( CPU_haveCPUID() ) {
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		return (CPU_getCPUIDFeaturesExt() & 0x00400000);
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	}
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	return 0;
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}
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static __inline__ int CPU_have3DNow(void)
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{
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	if ( CPU_haveCPUID() ) {
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		return (CPU_getCPUIDFeaturesExt() & 0x80000000);
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	}
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	return 0;
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}
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static __inline__ int CPU_have3DNowExt(void)
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{
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	if ( CPU_haveCPUID() ) {
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		return (CPU_getCPUIDFeaturesExt() & 0x40000000);
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	}
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	return 0;
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}
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static __inline__ int CPU_haveSSE(void)
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{
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	if ( CPU_haveCPUID() ) {
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		return (CPU_getCPUIDFeatures() & 0x02000000);
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	}
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	return 0;
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}
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static __inline__ int CPU_haveSSE2(void)
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{
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	if ( CPU_haveCPUID() ) {
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		return (CPU_getCPUIDFeatures() & 0x04000000);
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	}
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	return 0;
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   304
}
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static __inline__ int CPU_haveAltiVec(void)
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{
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	volatile int altivec = 0;
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#if defined(__MACOSX__) && defined(__ppc__)
778
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	int selectors[2] = { CTL_HW, HW_VECTORUNIT }; 
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   311
	int hasVectorUnit = 0; 
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	size_t length = sizeof(hasVectorUnit); 
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	int error = sysctl(selectors, 2, &hasVectorUnit, &length, NULL, 0); 
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	if( 0 == error )
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		altivec = (hasVectorUnit != 0); 
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#elif SDL_ALTIVEC_BLITTERS && HAVE_SETJMP
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	void (*handler)(int sig);
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	handler = signal(SIGILL, illegal_instruction);
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   319
	if ( setjmp(jmpbuf) == 0 ) {
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		asm volatile ("mtspr 256, %0\n\t"
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   321
			      "vand %%v0, %%v0, %%v0"
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   322
			      :
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   323
			      : "r" (-1));
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   324
		altivec = 1;
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   325
	}
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   326
	signal(SIGILL, handler);
778
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   327
#endif
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   328
	return altivec; 
778
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   329
}
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   330
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static Uint32 SDL_CPUFeatures = 0xFFFFFFFF;
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   333
static Uint32 SDL_GetCPUFeatures(void)
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   334
{
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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   335
	if ( SDL_CPUFeatures == 0xFFFFFFFF ) {
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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   336
		SDL_CPUFeatures = 0;
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   337
		if ( CPU_haveRDTSC() ) {
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   338
			SDL_CPUFeatures |= CPU_HAS_RDTSC;
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   339
		}
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		if ( CPU_haveMMX() ) {
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   341
			SDL_CPUFeatures |= CPU_HAS_MMX;
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   342
		}
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		if ( CPU_haveMMXExt() ) {
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			SDL_CPUFeatures |= CPU_HAS_MMXEXT;
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		}
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		if ( CPU_have3DNow() ) {
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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   347
			SDL_CPUFeatures |= CPU_HAS_3DNOW;
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   348
		}
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		if ( CPU_have3DNowExt() ) {
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   350
			SDL_CPUFeatures |= CPU_HAS_3DNOWEXT;
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		}
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		if ( CPU_haveSSE() ) {
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   353
			SDL_CPUFeatures |= CPU_HAS_SSE;
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   354
		}
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		if ( CPU_haveSSE2() ) {
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   356
			SDL_CPUFeatures |= CPU_HAS_SSE2;
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   357
		}
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   358
		if ( CPU_haveAltiVec() ) {
8ac3f46f9d09 Date: Tue, 6 Jan 2004 12:42:19 +0100
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diff changeset
   359
			SDL_CPUFeatures |= CPU_HAS_ALTIVEC;
8ac3f46f9d09 Date: Tue, 6 Jan 2004 12:42:19 +0100
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   360
		}
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diff changeset
   361
	}
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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diff changeset
   362
	return SDL_CPUFeatures;
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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diff changeset
   363
}
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diff changeset
   364
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   365
SDL_bool SDL_HasRDTSC(void)
745
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   366
{
71ee03909f42 Greatly simplified the SDL CPU info code
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diff changeset
   367
	if ( SDL_GetCPUFeatures() & CPU_HAS_RDTSC ) {
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   368
		return SDL_TRUE;
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diff changeset
   369
	}
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   370
	return SDL_FALSE;
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diff changeset
   371
}
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   372
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   373
SDL_bool SDL_HasMMX(void)
739
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   374
{
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
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diff changeset
   375
	if ( SDL_GetCPUFeatures() & CPU_HAS_MMX ) {
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   376
		return SDL_TRUE;
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   377
	}
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   378
	return SDL_FALSE;
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   379
}
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   380
1426
ef9a9064bff2 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   381
SDL_bool SDL_HasMMXExt(void)
804
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   382
{
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   383
	if ( SDL_GetCPUFeatures() & CPU_HAS_MMXEXT ) {
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   384
		return SDL_TRUE;
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   385
	}
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   386
	return SDL_FALSE;
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   387
}
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   388
1426
ef9a9064bff2 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   389
SDL_bool SDL_Has3DNow(void)
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   390
{
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   391
	if ( SDL_GetCPUFeatures() & CPU_HAS_3DNOW ) {
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   392
		return SDL_TRUE;
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   393
	}
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   394
	return SDL_FALSE;
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   395
}
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   396
1426
ef9a9064bff2 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   397
SDL_bool SDL_Has3DNowExt(void)
804
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   398
{
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   399
	if ( SDL_GetCPUFeatures() & CPU_HAS_3DNOWEXT ) {
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   400
		return SDL_TRUE;
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   401
	}
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   402
	return SDL_FALSE;
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   403
}
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   404
1426
ef9a9064bff2 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   405
SDL_bool SDL_HasSSE(void)
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   406
{
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   407
	if ( SDL_GetCPUFeatures() & CPU_HAS_SSE ) {
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   408
		return SDL_TRUE;
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   409
	}
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   410
	return SDL_FALSE;
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   411
}
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   412
1426
ef9a9064bff2 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   413
SDL_bool SDL_HasSSE2(void)
804
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   414
{
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   415
	if ( SDL_GetCPUFeatures() & CPU_HAS_SSE2 ) {
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   416
		return SDL_TRUE;
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   417
	}
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   418
	return SDL_FALSE;
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   419
}
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   420
1426
ef9a9064bff2 *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
   421
SDL_bool SDL_HasAltiVec(void)
778
8ac3f46f9d09 Date: Tue, 6 Jan 2004 12:42:19 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   422
{
8ac3f46f9d09 Date: Tue, 6 Jan 2004 12:42:19 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   423
	if ( SDL_GetCPUFeatures() & CPU_HAS_ALTIVEC ) {
8ac3f46f9d09 Date: Tue, 6 Jan 2004 12:42:19 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   424
		return SDL_TRUE;
8ac3f46f9d09 Date: Tue, 6 Jan 2004 12:42:19 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   425
	}
8ac3f46f9d09 Date: Tue, 6 Jan 2004 12:42:19 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   426
	return SDL_FALSE;
8ac3f46f9d09 Date: Tue, 6 Jan 2004 12:42:19 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   427
}
8ac3f46f9d09 Date: Tue, 6 Jan 2004 12:42:19 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   428
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   429
#ifdef TEST_MAIN
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   430
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   431
#include <stdio.h>
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   432
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   433
int main()
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   434
{
778
8ac3f46f9d09 Date: Tue, 6 Jan 2004 12:42:19 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   435
	printf("RDTSC: %d\n", SDL_HasRDTSC());
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   436
	printf("MMX: %d\n", SDL_HasMMX());
785
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   437
	printf("MMXExt: %d\n", SDL_HasMMXExt());
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   438
	printf("3DNow: %d\n", SDL_Has3DNow());
785
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   439
	printf("3DNowExt: %d\n", SDL_Has3DNowExt());
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   440
	printf("SSE: %d\n", SDL_HasSSE());
785
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
Sam Lantinga <slouken@libsdl.org>
parents: 784
diff changeset
   441
	printf("SSE2: %d\n", SDL_HasSSE2());
778
8ac3f46f9d09 Date: Tue, 6 Jan 2004 12:42:19 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   442
	printf("AltiVec: %d\n", SDL_HasAltiVec());
745
71ee03909f42 Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents: 739
diff changeset
   443
	return 0;
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   444
}
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   445
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   446
#endif /* TEST_MAIN */