src/cpuinfo/SDL_cpuinfo.c
author Sam Lantinga <slouken@libsdl.org>
Thu, 17 Oct 2013 11:32:14 -0700
changeset 7822 6bd98963606b
parent 7821 c47ae79f0de8
child 7823 4ab3a5ee041d
permissions -rw-r--r--
The _SC_PHYS_PAGES method of calculating RAM works on Linux.
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/*
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  Simple DirectMedia Layer
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  Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
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  This software is provided 'as-is', without any express or implied
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  warranty.  In no event will the authors be held liable for any damages
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  arising from the use of this software.
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  Permission is granted to anyone to use this software for any purpose,
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  including commercial applications, and to alter it and redistribute it
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  freely, subject to the following restrictions:
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  1. The origin of this software must not be misrepresented; you must not
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     claim that you wrote the original software. If you use this software
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     in a product, an acknowledgment in the product documentation would be
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     appreciated but is not required.
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  2. Altered source versions must be plainly marked as such, and must not be
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     misrepresented as being the original software.
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  3. This notice may not be removed or altered from any source distribution.
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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_cpuinfo.h"
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#ifdef HAVE_SYSCONF
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#include <unistd.h>
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#endif
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#ifdef HAVE_SYSCTLBYNAME
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#endif
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#if defined(__MACOSX__) && (defined(__ppc__) || defined(__ppc64__))
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#include <sys/sysctl.h>         /* For AltiVec check */
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#elif defined(__OpenBSD__) && defined(__powerpc__)
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#include <sys/param.h>
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#include <sys/sysctl.h> /* For AltiVec check */
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#include <machine/cpu.h>
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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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#ifdef __WIN32__
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#include "../core/windows/SDL_windows.h"
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#endif
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#define CPU_HAS_RDTSC   0x00000001
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#define CPU_HAS_ALTIVEC 0x00000002
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#define CPU_HAS_MMX     0x00000004
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#define CPU_HAS_3DNOW   0x00000008
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#define CPU_HAS_SSE     0x00000010
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#define CPU_HAS_SSE2    0x00000020
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#define CPU_HAS_SSE3    0x00000040
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#define CPU_HAS_SSE41   0x00000100
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#define CPU_HAS_SSE42   0x00000200
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#if SDL_ALTIVEC_BLITTERS && HAVE_SETJMP && !__MACOSX__ && !__OpenBSD__
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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
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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
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CPU_haveCPUID(void)
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{
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    int has_CPUID = 0;
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/* *INDENT-OFF* */
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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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"       popl    %eax           \n"
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"       xorl    %ecx,%eax      \n"
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"       jz      1f             \n"
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"       movl    $1,-8(%ebp)    \n"
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"1:                            \n"
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    );
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#elif defined(__sun) && defined(__amd64)
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    __asm (
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"       pushfq                 \n"
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"       popq    %rax           \n"
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"       movq    %rax,%rcx      \n"
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"       xorl    $0x200000,%eax \n"
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"       pushq   %rax           \n"
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"       popfq                  \n"
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"       pushfq                 \n"
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"       popq    %rax           \n"
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"       xorl    %ecx,%eax      \n"
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"       jz      1f             \n"
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"       movl    $1,-8(%rbp)    \n"
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"1:                            \n"
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    );
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#endif
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/* *INDENT-ON* */
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    return has_CPUID;
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}
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#if defined(__GNUC__) && defined(i386)
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#define cpuid(func, a, b, c, d) \
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    __asm__ __volatile__ ( \
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"        pushl %%ebx        \n" \
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"        cpuid              \n" \
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"        movl %%ebx, %%esi  \n" \
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"        popl %%ebx         \n" : \
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            "=a" (a), "=S" (b), "=c" (c), "=d" (d) : "a" (func))
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#elif defined(__GNUC__) && defined(__x86_64__)
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#define cpuid(func, a, b, c, d) \
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    __asm__ __volatile__ ( \
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"        pushq %%rbx        \n" \
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"        cpuid              \n" \
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"        movq %%rbx, %%rsi  \n" \
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"        popq %%rbx         \n" : \
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            "=a" (a), "=S" (b), "=c" (c), "=d" (d) : "a" (func))
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#elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)
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#define cpuid(func, a, b, c, d) \
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    __asm { \
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        __asm mov eax, func \
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        __asm cpuid \
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        __asm mov a, eax \
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        __asm mov b, ebx \
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        __asm mov c, ecx \
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        __asm mov d, edx \
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    }
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#else
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#define cpuid(func, a, b, c, d) \
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    a = b = c = d = 0
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#endif
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   193
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static __inline__ int
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CPU_getCPUIDFeatures(void)
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{
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    int features = 0;
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    int a, b, c, d;
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   199
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    cpuid(0, a, b, c, d);
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    if (a >= 1) {
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        cpuid(1, a, b, c, d);
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        features = d;
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   204
    }
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    return features;
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   206
}
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   207
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static __inline__ int
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CPU_haveRDTSC(void)
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{
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   211
    if (CPU_haveCPUID()) {
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        return (CPU_getCPUIDFeatures() & 0x00000010);
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   213
    }
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   214
    return 0;
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   215
}
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   216
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static __inline__ int
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   218
CPU_haveAltiVec(void)
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{
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   220
    volatile int altivec = 0;
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   221
#if (defined(__MACOSX__) && (defined(__ppc__) || defined(__ppc64__))) || (defined(__OpenBSD__) && defined(__powerpc__))
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   222
#ifdef __OpenBSD__
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    int selectors[2] = { CTL_MACHDEP, CPU_ALTIVEC };
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   224
#else
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    int selectors[2] = { CTL_HW, HW_VECTORUNIT };
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   226
#endif
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    int hasVectorUnit = 0;
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   228
    size_t length = sizeof(hasVectorUnit);
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   229
    int error = sysctl(selectors, 2, &hasVectorUnit, &length, NULL, 0);
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   230
    if (0 == error)
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   231
        altivec = (hasVectorUnit != 0);
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   232
#elif SDL_ALTIVEC_BLITTERS && HAVE_SETJMP
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   233
    void (*handler) (int sig);
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   234
    handler = signal(SIGILL, illegal_instruction);
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   235
    if (setjmp(jmpbuf) == 0) {
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   236
        asm volatile ("mtspr 256, %0\n\t" "vand %%v0, %%v0, %%v0"::"r" (-1));
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   237
        altivec = 1;
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   238
    }
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   239
    signal(SIGILL, handler);
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#endif
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    return altivec;
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   242
}
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   243
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static __inline__ int
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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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   249
    }
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   250
    return 0;
745
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   251
}
71ee03909f42 Greatly simplified the SDL CPU info code
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   252
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   253
static __inline__ int
5389
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
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   254
CPU_have3DNow(void)
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   255
{
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   256
    if (CPU_haveCPUID()) {
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
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   257
        int a, b, c, d;
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
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diff changeset
   258
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
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diff changeset
   259
        cpuid(0x80000000, a, b, c, d);
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
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diff changeset
   260
        if (a >= 0x80000001) {
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
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   261
            cpuid(0x80000001, a, b, c, d);
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
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   262
            return (d & 0x80000000);
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diff changeset
   263
        }
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
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diff changeset
   264
    }
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diff changeset
   265
    return 0;
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
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diff changeset
   266
}
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   267
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
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   268
static __inline__ int
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   269
CPU_haveSSE(void)
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   270
{
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   271
    if (CPU_haveCPUID()) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   272
        return (CPU_getCPUIDFeatures() & 0x02000000);
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diff changeset
   273
    }
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   274
    return 0;
785
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
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diff changeset
   275
}
ca06a994f03c Fixed bugs in CPU feature detection and added extended feature detection
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   276
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   277
static __inline__ int
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   278
CPU_haveSSE2(void)
778
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   279
{
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   280
    if (CPU_haveCPUID()) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   281
        return (CPU_getCPUIDFeatures() & 0x04000000);
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diff changeset
   282
    }
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diff changeset
   283
    return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   284
}
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
   285
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   286
static __inline__ int
5259
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
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diff changeset
   287
CPU_haveSSE3(void)
1895
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diff changeset
   288
{
5259
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
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diff changeset
   289
    if (CPU_haveCPUID()) {
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
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diff changeset
   290
        int a, b, c, d;
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
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parents: 5120
diff changeset
   291
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
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diff changeset
   292
        cpuid(0, a, b, c, d);
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
Sam Lantinga <slouken@libsdl.org>
parents: 5120
diff changeset
   293
        if (a >= 1) {
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
Sam Lantinga <slouken@libsdl.org>
parents: 5120
diff changeset
   294
            cpuid(1, a, b, c, d);
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
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diff changeset
   295
            return (c & 0x00000001);
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
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diff changeset
   296
        }
1895
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diff changeset
   297
    }
5259
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
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diff changeset
   298
    return 0;
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
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diff changeset
   299
}
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
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parents: 5120
diff changeset
   300
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
   301
static __inline__ int
5263
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
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diff changeset
   302
CPU_haveSSE41(void)
5259
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
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parents: 5120
diff changeset
   303
{
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
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diff changeset
   304
    if (CPU_haveCPUID()) {
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
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parents: 5120
diff changeset
   305
        int a, b, c, d;
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
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parents: 5120
diff changeset
   306
5263
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
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diff changeset
   307
        cpuid(1, a, b, c, d);
5259
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
Sam Lantinga <slouken@libsdl.org>
parents: 5120
diff changeset
   308
        if (a >= 1) {
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
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parents: 5120
diff changeset
   309
            cpuid(1, a, b, c, d);
5263
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
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diff changeset
   310
            return (c & 0x00080000);
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
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parents: 5262
diff changeset
   311
        }
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
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diff changeset
   312
    }
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
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diff changeset
   313
    return 0;
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
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parents: 5262
diff changeset
   314
}
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   315
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   316
static __inline__ int
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   317
CPU_haveSSE42(void)
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   318
{
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   319
    if (CPU_haveCPUID()) {
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   320
        int a, b, c, d;
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   321
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   322
        cpuid(1, a, b, c, d);
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   323
        if (a >= 1) {
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   324
            cpuid(1, a, b, c, d);
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   325
            return (c & 0x00100000);
5259
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
Sam Lantinga <slouken@libsdl.org>
parents: 5120
diff changeset
   326
        }
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
Sam Lantinga <slouken@libsdl.org>
parents: 5120
diff changeset
   327
    }
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
Sam Lantinga <slouken@libsdl.org>
parents: 5120
diff changeset
   328
    return 0;
778
8ac3f46f9d09 Date: Tue, 6 Jan 2004 12:42:19 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   329
}
8ac3f46f9d09 Date: Tue, 6 Jan 2004 12:42:19 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   330
3579
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
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parents: 3515
diff changeset
   331
static int SDL_CPUCount = 0;
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
   332
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   333
int
5120
b3f075368b1f Added API function to get CPU cache line size.
Sam Lantinga <slouken@libsdl.org>
parents: 5115
diff changeset
   334
SDL_GetCPUCount(void)
3579
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   335
{
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   336
    if (!SDL_CPUCount) {
3606
1a4456a01995 Fixed bug #924
Sam Lantinga <slouken@libsdl.org>
parents: 3587
diff changeset
   337
#if defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_ONLN)
3586
b6758aee0dd4 Added support for querying the number of CPUs available on Linux. This also happens to work on Mac OS X.
Sam Lantinga <slouken@libsdl.org>
parents: 3584
diff changeset
   338
        if (SDL_CPUCount <= 0) {
b6758aee0dd4 Added support for querying the number of CPUs available on Linux. This also happens to work on Mac OS X.
Sam Lantinga <slouken@libsdl.org>
parents: 3584
diff changeset
   339
            SDL_CPUCount = (int)sysconf(_SC_NPROCESSORS_ONLN);
b6758aee0dd4 Added support for querying the number of CPUs available on Linux. This also happens to work on Mac OS X.
Sam Lantinga <slouken@libsdl.org>
parents: 3584
diff changeset
   340
        }
b6758aee0dd4 Added support for querying the number of CPUs available on Linux. This also happens to work on Mac OS X.
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parents: 3584
diff changeset
   341
#endif
3579
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
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parents: 3515
diff changeset
   342
#ifdef HAVE_SYSCTLBYNAME
3586
b6758aee0dd4 Added support for querying the number of CPUs available on Linux. This also happens to work on Mac OS X.
Sam Lantinga <slouken@libsdl.org>
parents: 3584
diff changeset
   343
        if (SDL_CPUCount <= 0) {
3580
951dd6a5d1a2 Implemented Windows version of SDL_GetCPUCount()
Sam Lantinga <slouken@libsdl.org>
parents: 3579
diff changeset
   344
            size_t size = sizeof(SDL_CPUCount);
951dd6a5d1a2 Implemented Windows version of SDL_GetCPUCount()
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parents: 3579
diff changeset
   345
            sysctlbyname("hw.ncpu", &SDL_CPUCount, &size, NULL, 0);
951dd6a5d1a2 Implemented Windows version of SDL_GetCPUCount()
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parents: 3579
diff changeset
   346
        }
951dd6a5d1a2 Implemented Windows version of SDL_GetCPUCount()
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parents: 3579
diff changeset
   347
#endif
5086
c2539ff054c8 Fixed compiling on Windows Mobile SDK 5.0 with Visual Studio 2008
Sam Lantinga <slouken@libsdl.org>
parents: 5062
diff changeset
   348
#ifdef __WIN32__
3586
b6758aee0dd4 Added support for querying the number of CPUs available on Linux. This also happens to work on Mac OS X.
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parents: 3584
diff changeset
   349
        if (SDL_CPUCount <= 0) {
3580
951dd6a5d1a2 Implemented Windows version of SDL_GetCPUCount()
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parents: 3579
diff changeset
   350
            SYSTEM_INFO info;
951dd6a5d1a2 Implemented Windows version of SDL_GetCPUCount()
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parents: 3579
diff changeset
   351
            GetSystemInfo(&info);
951dd6a5d1a2 Implemented Windows version of SDL_GetCPUCount()
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parents: 3579
diff changeset
   352
            SDL_CPUCount = info.dwNumberOfProcessors;
951dd6a5d1a2 Implemented Windows version of SDL_GetCPUCount()
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parents: 3579
diff changeset
   353
        }
3579
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
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parents: 3515
diff changeset
   354
#endif
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
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parents: 3515
diff changeset
   355
        /* There has to be at least 1, right? :) */
3586
b6758aee0dd4 Added support for querying the number of CPUs available on Linux. This also happens to work on Mac OS X.
Sam Lantinga <slouken@libsdl.org>
parents: 3584
diff changeset
   356
        if (SDL_CPUCount <= 0) {
3579
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   357
            SDL_CPUCount = 1;
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   358
        }
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   359
    }
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   360
    return SDL_CPUCount;
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   361
}
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   362
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   363
/* Oh, such a sweet sweet trick, just not very useful. :) */
4472
791b3256fb22 Mostly cleaned up warnings with -Wmissing-prototypes
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   364
static const char *
5120
b3f075368b1f Added API function to get CPU cache line size.
Sam Lantinga <slouken@libsdl.org>
parents: 5115
diff changeset
   365
SDL_GetCPUType(void)
3579
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   366
{
5115
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   367
    static char SDL_CPUType[13];
3579
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   368
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   369
    if (!SDL_CPUType[0]) {
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   370
        int i = 0;
3580
951dd6a5d1a2 Implemented Windows version of SDL_GetCPUCount()
Sam Lantinga <slouken@libsdl.org>
parents: 3579
diff changeset
   371
        int a, b, c, d;
3579
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   372
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   373
        if (CPU_haveCPUID()) {
5115
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   374
            cpuid(0x00000000, a, b, c, d);
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   375
            SDL_CPUType[i++] = (char)(b & 0xff); b >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   376
            SDL_CPUType[i++] = (char)(b & 0xff); b >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   377
            SDL_CPUType[i++] = (char)(b & 0xff); b >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   378
            SDL_CPUType[i++] = (char)(b & 0xff); b >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   379
            SDL_CPUType[i++] = (char)(d & 0xff); d >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   380
            SDL_CPUType[i++] = (char)(d & 0xff); d >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   381
            SDL_CPUType[i++] = (char)(d & 0xff); d >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   382
            SDL_CPUType[i++] = (char)(d & 0xff); d >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   383
            SDL_CPUType[i++] = (char)(c & 0xff); c >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   384
            SDL_CPUType[i++] = (char)(c & 0xff); c >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   385
            SDL_CPUType[i++] = (char)(c & 0xff); c >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   386
            SDL_CPUType[i++] = (char)(c & 0xff); c >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   387
        }
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   388
        if (!SDL_CPUType[0]) {
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   389
            SDL_strlcpy(SDL_CPUType, "Unknown", sizeof(SDL_CPUType));
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   390
        }
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   391
    }
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   392
    return SDL_CPUType;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   393
}
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   394
5981
75caa8a7d559 Fixed a whole slew of compiler warnings that -Wall exposed.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   395
75caa8a7d559 Fixed a whole slew of compiler warnings that -Wall exposed.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   396
#ifdef TEST_MAIN  /* !!! FIXME: only used for test at the moment. */
5115
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   397
static const char *
5120
b3f075368b1f Added API function to get CPU cache line size.
Sam Lantinga <slouken@libsdl.org>
parents: 5115
diff changeset
   398
SDL_GetCPUName(void)
5115
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   399
{
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   400
    static char SDL_CPUName[48];
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   401
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   402
    if (!SDL_CPUName[0]) {
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   403
        int i = 0;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   404
        int a, b, c, d;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   405
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   406
        if (CPU_haveCPUID()) {
3580
951dd6a5d1a2 Implemented Windows version of SDL_GetCPUCount()
Sam Lantinga <slouken@libsdl.org>
parents: 3579
diff changeset
   407
            cpuid(0x80000000, a, b, c, d);
951dd6a5d1a2 Implemented Windows version of SDL_GetCPUCount()
Sam Lantinga <slouken@libsdl.org>
parents: 3579
diff changeset
   408
            if (a >= 0x80000004) {
951dd6a5d1a2 Implemented Windows version of SDL_GetCPUCount()
Sam Lantinga <slouken@libsdl.org>
parents: 3579
diff changeset
   409
                cpuid(0x80000002, a, b, c, d);
5115
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   410
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   411
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   412
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   413
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   414
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   415
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   416
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   417
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   418
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   419
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   420
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   421
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   422
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   423
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   424
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   425
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
3580
951dd6a5d1a2 Implemented Windows version of SDL_GetCPUCount()
Sam Lantinga <slouken@libsdl.org>
parents: 3579
diff changeset
   426
                cpuid(0x80000003, a, b, c, d);
5115
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   427
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   428
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   429
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   430
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   431
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   432
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   433
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   434
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   435
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   436
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   437
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   438
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   439
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   440
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   441
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   442
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
3580
951dd6a5d1a2 Implemented Windows version of SDL_GetCPUCount()
Sam Lantinga <slouken@libsdl.org>
parents: 3579
diff changeset
   443
                cpuid(0x80000004, a, b, c, d);
5115
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   444
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   445
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   446
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   447
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   448
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   449
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   450
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   451
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   452
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   453
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   454
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   455
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   456
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   457
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   458
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   459
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
3579
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   460
            }
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   461
        }
5115
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   462
        if (!SDL_CPUName[0]) {
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   463
            SDL_strlcpy(SDL_CPUName, "Unknown", sizeof(SDL_CPUName));
3579
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   464
        }
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   465
    }
5115
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   466
    return SDL_CPUName;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   467
}
5981
75caa8a7d559 Fixed a whole slew of compiler warnings that -Wall exposed.
Ryan C. Gordon <icculus@icculus.org>
parents: 5535
diff changeset
   468
#endif
5115
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   469
5120
b3f075368b1f Added API function to get CPU cache line size.
Sam Lantinga <slouken@libsdl.org>
parents: 5115
diff changeset
   470
int
b3f075368b1f Added API function to get CPU cache line size.
Sam Lantinga <slouken@libsdl.org>
parents: 5115
diff changeset
   471
SDL_GetCPUCacheLineSize(void)
5115
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   472
{
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   473
    const char *cpuType = SDL_GetCPUType();
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   474
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   475
    if (SDL_strcmp(cpuType, "GenuineIntel") == 0) {
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   476
        int a, b, c, d;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   477
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   478
        cpuid(0x00000001, a, b, c, d);
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   479
        return (((b >> 8) & 0xff) * 8);
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   480
    } else if (SDL_strcmp(cpuType, "AuthenticAMD") == 0) {
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   481
        int a, b, c, d;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   482
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   483
        cpuid(0x80000005, a, b, c, d);
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   484
        return (c & 0xff);
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   485
    } else {
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   486
        /* Just make a guess here... */
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   487
        return SDL_CACHELINE_SIZE;
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   488
    }
3579
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   489
}
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   490
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   491
static Uint32 SDL_CPUFeatures = 0xFFFFFFFF;
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   492
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   493
static Uint32
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   494
SDL_GetCPUFeatures(void)
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   495
{
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   496
    if (SDL_CPUFeatures == 0xFFFFFFFF) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   497
        SDL_CPUFeatures = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   498
        if (CPU_haveRDTSC()) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   499
            SDL_CPUFeatures |= CPU_HAS_RDTSC;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   500
        }
5389
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   501
        if (CPU_haveAltiVec()) {
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   502
            SDL_CPUFeatures |= CPU_HAS_ALTIVEC;
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   503
        }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   504
        if (CPU_haveMMX()) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   505
            SDL_CPUFeatures |= CPU_HAS_MMX;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   506
        }
5389
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   507
        if (CPU_have3DNow()) {
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   508
            SDL_CPUFeatures |= CPU_HAS_3DNOW;
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   509
        }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   510
        if (CPU_haveSSE()) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   511
            SDL_CPUFeatures |= CPU_HAS_SSE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   512
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   513
        if (CPU_haveSSE2()) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   514
            SDL_CPUFeatures |= CPU_HAS_SSE2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   515
        }
5259
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
Sam Lantinga <slouken@libsdl.org>
parents: 5120
diff changeset
   516
        if (CPU_haveSSE3()) {
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
Sam Lantinga <slouken@libsdl.org>
parents: 5120
diff changeset
   517
            SDL_CPUFeatures |= CPU_HAS_SSE3;
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
Sam Lantinga <slouken@libsdl.org>
parents: 5120
diff changeset
   518
        }
5263
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   519
        if (CPU_haveSSE41()) {
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   520
            SDL_CPUFeatures |= CPU_HAS_SSE41;
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   521
        }
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   522
        if (CPU_haveSSE42()) {
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   523
            SDL_CPUFeatures |= CPU_HAS_SSE42;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   524
        }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   525
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   526
    return SDL_CPUFeatures;
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   527
}
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   528
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   529
SDL_bool
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   530
SDL_HasRDTSC(void)
745
71ee03909f42 Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents: 739
diff changeset
   531
{
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   532
    if (SDL_GetCPUFeatures() & CPU_HAS_RDTSC) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   533
        return SDL_TRUE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   534
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   535
    return SDL_FALSE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   536
}
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   537
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   538
SDL_bool
5389
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   539
SDL_HasAltiVec(void)
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   540
{
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   541
    if (SDL_GetCPUFeatures() & CPU_HAS_ALTIVEC) {
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   542
        return SDL_TRUE;
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   543
    }
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   544
    return SDL_FALSE;
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   545
}
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   546
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   547
SDL_bool
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   548
SDL_HasMMX(void)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   549
{
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   550
    if (SDL_GetCPUFeatures() & CPU_HAS_MMX) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   551
        return SDL_TRUE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   552
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   553
    return SDL_FALSE;
745
71ee03909f42 Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents: 739
diff changeset
   554
}
71ee03909f42 Greatly simplified the SDL CPU info code
Sam Lantinga <slouken@libsdl.org>
parents: 739
diff changeset
   555
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   556
SDL_bool
5389
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   557
SDL_Has3DNow(void)
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   558
{
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   559
    if (SDL_GetCPUFeatures() & CPU_HAS_3DNOW) {
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   560
        return SDL_TRUE;
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   561
    }
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   562
    return SDL_FALSE;
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   563
}
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   564
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   565
SDL_bool
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   566
SDL_HasSSE(void)
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   567
{
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   568
    if (SDL_GetCPUFeatures() & CPU_HAS_SSE) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   569
        return SDL_TRUE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   570
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   571
    return SDL_FALSE;
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   572
}
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   573
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   574
SDL_bool
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   575
SDL_HasSSE2(void)
804
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   576
{
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   577
    if (SDL_GetCPUFeatures() & CPU_HAS_SSE2) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   578
        return SDL_TRUE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   579
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   580
    return SDL_FALSE;
804
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   581
}
b2fda076b02e *** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents: 796
diff changeset
   582
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   583
SDL_bool
5259
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
Sam Lantinga <slouken@libsdl.org>
parents: 5120
diff changeset
   584
SDL_HasSSE3(void)
778
8ac3f46f9d09 Date: Tue, 6 Jan 2004 12:42:19 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   585
{
5259
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
Sam Lantinga <slouken@libsdl.org>
parents: 5120
diff changeset
   586
    if (SDL_GetCPUFeatures() & CPU_HAS_SSE3) {
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
Sam Lantinga <slouken@libsdl.org>
parents: 5120
diff changeset
   587
        return SDL_TRUE;
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
Sam Lantinga <slouken@libsdl.org>
parents: 5120
diff changeset
   588
    }
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
Sam Lantinga <slouken@libsdl.org>
parents: 5120
diff changeset
   589
    return SDL_FALSE;
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
Sam Lantinga <slouken@libsdl.org>
parents: 5120
diff changeset
   590
}
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
Sam Lantinga <slouken@libsdl.org>
parents: 5120
diff changeset
   591
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
Sam Lantinga <slouken@libsdl.org>
parents: 5120
diff changeset
   592
SDL_bool
5263
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   593
SDL_HasSSE41(void)
5259
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
Sam Lantinga <slouken@libsdl.org>
parents: 5120
diff changeset
   594
{
5263
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   595
    if (SDL_GetCPUFeatures() & CPU_HAS_SSE41) {
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   596
        return SDL_TRUE;
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   597
    }
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   598
    return SDL_FALSE;
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   599
}
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   600
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   601
SDL_bool
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   602
SDL_HasSSE42(void)
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   603
{
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   604
    if (SDL_GetCPUFeatures() & CPU_HAS_SSE42) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   605
        return SDL_TRUE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   606
    }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   607
    return SDL_FALSE;
778
8ac3f46f9d09 Date: Tue, 6 Jan 2004 12:42:19 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   608
}
8ac3f46f9d09 Date: Tue, 6 Jan 2004 12:42:19 +0100
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
   609
7821
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   610
static int SDL_SystemRAM = 0;
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   611
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   612
int
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   613
SDL_GetSystemRAM(void)
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   614
{
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   615
    if (!SDL_SystemRAM) {
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   616
#if defined(HAVE_SYSCONF) && defined(_SC_PHYS_PAGES) && defined(_SC_PAGESIZE)
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   617
        if (SDL_SystemRAM <= 0) {
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   618
            SDL_SystemRAM = (int)((Sint64)sysconf(_SC_PHYS_PAGES) * sysconf(_SC_PAGESIZE) / (1024*1024));
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   619
        }
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   620
#endif
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   621
#ifdef HAVE_SYSCTLBYNAME
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   622
        if (SDL_SystemRAM <= 0) {
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   623
            int mib[2] = {CTL_HW, HW_MEMSIZE};
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   624
            uint64 memsize = 0;
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   625
            size_t len = sizeof(memsize);
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   626
            
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   627
            if (sysctl(mib, 2, &memsize, &len, NULL, 0) == 0) {
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   628
                SDL_SystemRAM = (int)(memsize / (1024*1024));
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   629
            }
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   630
        }
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   631
#endif
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   632
#ifdef __WIN32__
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   633
        if (SDL_SystemRAM <= 0) {
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   634
            MEMORYSTATUSEX stat;
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   635
            if (GlobalMemoryStatusEx(&stat)) {
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   636
                SDL_SystemRAM = (int)(stat.ullTotalPhys / (1024 * 1024));
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   637
            }
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   638
        }
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   639
#endif
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   640
    }
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   641
    return SDL_SystemRAM;
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   642
}
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   643
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   644
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   645
#ifdef TEST_MAIN
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   646
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   647
#include <stdio.h>
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   648
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   649
int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   650
main()
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   651
{
3579
3427271a2d75 Added SDL_GetCPUCount() to see how many cores are available.
Sam Lantinga <slouken@libsdl.org>
parents: 3515
diff changeset
   652
    printf("CPU count: %d\n", SDL_GetCPUCount());
5115
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   653
    printf("CPU type: %s\n", SDL_GetCPUType());
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   654
    printf("CPU name: %s\n", SDL_GetCPUName());
427998ff3bcf Added cache line size info in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
   655
    printf("CacheLine size: %d\n", SDL_GetCPUCacheLineSize());
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   656
    printf("RDTSC: %d\n", SDL_HasRDTSC());
5389
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   657
    printf("Altivec: %d\n", SDL_HasAltiVec());
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   658
    printf("MMX: %d\n", SDL_HasMMX());
5389
24903690f48a Re-added the 3DNow! and AltiVec instruction support.
Sam Lantinga <slouken@libsdl.org>
parents: 5263
diff changeset
   659
    printf("3DNow: %d\n", SDL_Has3DNow());
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   660
    printf("SSE: %d\n", SDL_HasSSE());
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   661
    printf("SSE2: %d\n", SDL_HasSSE2());
5259
6a65c1fc07af Updated CPU detection code for SSE3 and SSE4 and removed obsolete 3DNow! and Altivec support.
Sam Lantinga <slouken@libsdl.org>
parents: 5120
diff changeset
   662
    printf("SSE3: %d\n", SDL_HasSSE3());
5263
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   663
    printf("SSE4.1: %d\n", SDL_HasSSE41());
e1122f31fec5 Fixed SSE4 detection, and split it into SSE 4.1 and 4.2
Sam Lantinga <slouken@libsdl.org>
parents: 5262
diff changeset
   664
    printf("SSE4.2: %d\n", SDL_HasSSE42());
7821
c47ae79f0de8 Added an API to get the amount of system RAM
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
   665
    printf("RAM: %d MB\n", SDL_GetSystemRAM());
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   666
    return 0;
739
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   667
}
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   668
22dbf364c017 Added SDL_HasMMX(), SDL_Has3DNow(), SDL_HasSSE() in SDL_cpuinfo.h
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   669
#endif /* TEST_MAIN */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   670
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1864
diff changeset
   671
/* vi: set ts=4 sw=4 expandtab: */