src/cpuinfo/SDL_cpuinfo.c
author Sam Lantinga <slouken@libsdl.org>
Sat, 22 Feb 2014 18:01:18 -0800
changeset 8240 334257cd613d
parent 8149 681eb46b8ac4
child 8241 b6d5a589ce3f
permissions -rw-r--r--
Fixed bug 2335 - Fails to build on Debian GNU/kFreeBSD

Felix Geyer

Starting from version 2.0.1 libsdl fails to build on Debian GNU/kFreeBSD in SDL_cpuinfo.c.

GNU/kFreeBSD defines __FreeBSD_kernel__ but not __FreeBSD__.
The #ifdef __FreeBSD__ check should be extended for __FreeBSD_kernel__, see the attached patch.

Build log:
libtool: compile: gcc -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -DUSING_GENERATED_CONFIG_H -Iinclude -I/«BUILDDIR»/libsdl2-2.0.1+dfsg1/include -mmmx -m3dnow -msse -msse2 -fvisibility=hidden -D_REENTRANT -I/usr/include/dbus-1.0 -I/usr/lib/x86_64-kfreebsd-gnu/dbus-1.0/include -DHAVE_USBHID_H -DUSBHID_NEW -D_REENTRANT -Wall -c /«BUILDDIR»/libsdl2-2.0.1+dfsg1/src/cpuinfo/SDL_cpuinfo.c -fPIC -DPIC -o build/.libs/SDL_cpuinfo.o
/«BUILDDIR»/libsdl2-2.0.1+dfsg1/src/cpuinfo/SDL_cpuinfo.c: In function 'SDL_GetSystemRAM':
/«BUILDDIR»/libsdl2-2.0.1+dfsg1/src/cpuinfo/SDL_cpuinfo.c:632:35: error: 'HW_MEMSIZE' undeclared (first use in this function)
int mib[2] = {CTL_HW, HW_MEMSIZE};
^
/«BUILDDIR»/libsdl2-2.0.1+dfsg1/src/cpuinfo/SDL_cpuinfo.c:632:35: note: each undeclared identifier is reported only once for each function it appears in
make[2]: *** [build/SDL_cpuinfo.lo] Error 1
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/*
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  Simple DirectMedia Layer
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  Copyright (C) 1997-2014 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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#ifdef TEST_MAIN
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#include "SDL_config.h"
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#else
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#include "../SDL_internal.h"
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#endif
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#if defined(__WIN32__)
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#include "../core/windows/SDL_windows.h"
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#endif
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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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#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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#define CPU_HAS_AVX     0x00000400
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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 SDL_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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static SDL_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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    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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    }
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    return features;
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}
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static SDL_INLINE int
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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 SDL_INLINE int
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CPU_haveAltiVec(void)
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{
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    volatile int altivec = 0;
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#if (defined(__MACOSX__) && (defined(__ppc__) || defined(__ppc64__))) || (defined(__OpenBSD__) && defined(__powerpc__))
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#ifdef __OpenBSD__
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    int selectors[2] = { CTL_MACHDEP, CPU_ALTIVEC };
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#else
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    int selectors[2] = { CTL_HW, HW_VECTORUNIT };
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#endif
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    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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    if (setjmp(jmpbuf) == 0) {
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        asm volatile ("mtspr 256, %0\n\t" "vand %%v0, %%v0, %%v0"::"r" (-1));
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        altivec = 1;
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    }
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    signal(SIGILL, handler);
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#endif
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    return altivec;
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}
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static SDL_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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    }
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    return 0;
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}
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static SDL_INLINE int
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CPU_have3DNow(void)
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{
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    if (CPU_haveCPUID()) {
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        int a, b, c, d;
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        cpuid(0x80000000, a, b, c, d);
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        if (a >= 0x80000001) {
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            cpuid(0x80000001, a, b, c, d);
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            return (d & 0x80000000);
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        }
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    }
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    return 0;
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}
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   274
static SDL_INLINE int
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CPU_haveSSE(void)
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   276
{
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    if (CPU_haveCPUID()) {
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        return (CPU_getCPUIDFeatures() & 0x02000000);
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   279
    }
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   280
    return 0;
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   281
}
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   282
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   283
static SDL_INLINE int
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   284
CPU_haveSSE2(void)
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   285
{
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   286
    if (CPU_haveCPUID()) {
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        return (CPU_getCPUIDFeatures() & 0x04000000);
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   288
    }
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   289
    return 0;
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   290
}
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   291
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   292
static SDL_INLINE int
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   293
CPU_haveSSE3(void)
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   294
{
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   295
    if (CPU_haveCPUID()) {
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   296
        int a, b, c, d;
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   297
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   298
        cpuid(0, a, b, c, d);
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   299
        if (a >= 1) {
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   300
            cpuid(1, a, b, c, d);
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   301
            return (c & 0x00000001);
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   302
        }
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   303
    }
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   304
    return 0;
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   305
}
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   306
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   307
static SDL_INLINE int
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   308
CPU_haveSSE41(void)
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   309
{
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   310
    if (CPU_haveCPUID()) {
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   311
        int a, b, c, d;
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   312
slouken@5263
   313
        cpuid(1, a, b, c, d);
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   314
        if (a >= 1) {
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   315
            cpuid(1, a, b, c, d);
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   316
            return (c & 0x00080000);
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   317
        }
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   318
    }
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   319
    return 0;
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   320
}
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   321
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   322
static SDL_INLINE int
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   323
CPU_haveSSE42(void)
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   324
{
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   325
    if (CPU_haveCPUID()) {
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   326
        int a, b, c, d;
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   327
slouken@5263
   328
        cpuid(1, a, b, c, d);
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   329
        if (a >= 1) {
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   330
            cpuid(1, a, b, c, d);
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   331
            return (c & 0x00100000);
slouken@5259
   332
        }
slouken@5259
   333
    }
slouken@5259
   334
    return 0;
slouken@778
   335
}
slouken@778
   336
slouken@8148
   337
static SDL_INLINE int
slouken@8148
   338
CPU_haveAVX(void)
slouken@8148
   339
{
slouken@8148
   340
    if (CPU_haveCPUID()) {
slouken@8148
   341
        int a, b, c, d;
slouken@8148
   342
slouken@8148
   343
        cpuid(1, a, b, c, d);
slouken@8148
   344
        if (a >= 1) {
slouken@8148
   345
            cpuid(1, a, b, c, d);
slouken@8148
   346
            return (c & 0x10000000);
slouken@8148
   347
        }
slouken@8148
   348
    }
slouken@8148
   349
    return 0;
slouken@8148
   350
}
slouken@8148
   351
slouken@3579
   352
static int SDL_CPUCount = 0;
slouken@3579
   353
slouken@3579
   354
int
slouken@5120
   355
SDL_GetCPUCount(void)
slouken@3579
   356
{
slouken@3579
   357
    if (!SDL_CPUCount) {
slouken@3606
   358
#if defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_ONLN)
slouken@3586
   359
        if (SDL_CPUCount <= 0) {
slouken@3586
   360
            SDL_CPUCount = (int)sysconf(_SC_NPROCESSORS_ONLN);
slouken@3586
   361
        }
slouken@3586
   362
#endif
slouken@3579
   363
#ifdef HAVE_SYSCTLBYNAME
slouken@3586
   364
        if (SDL_CPUCount <= 0) {
slouken@3580
   365
            size_t size = sizeof(SDL_CPUCount);
slouken@3580
   366
            sysctlbyname("hw.ncpu", &SDL_CPUCount, &size, NULL, 0);
slouken@3580
   367
        }
slouken@3580
   368
#endif
slouken@5086
   369
#ifdef __WIN32__
slouken@3586
   370
        if (SDL_CPUCount <= 0) {
slouken@3580
   371
            SYSTEM_INFO info;
slouken@3580
   372
            GetSystemInfo(&info);
slouken@3580
   373
            SDL_CPUCount = info.dwNumberOfProcessors;
slouken@3580
   374
        }
slouken@3579
   375
#endif
slouken@3579
   376
        /* There has to be at least 1, right? :) */
slouken@3586
   377
        if (SDL_CPUCount <= 0) {
slouken@3579
   378
            SDL_CPUCount = 1;
slouken@3579
   379
        }
slouken@3579
   380
    }
slouken@3579
   381
    return SDL_CPUCount;
slouken@3579
   382
}
slouken@3579
   383
slouken@3579
   384
/* Oh, such a sweet sweet trick, just not very useful. :) */
slouken@4472
   385
static const char *
slouken@5120
   386
SDL_GetCPUType(void)
slouken@3579
   387
{
slouken@5115
   388
    static char SDL_CPUType[13];
slouken@3579
   389
slouken@3579
   390
    if (!SDL_CPUType[0]) {
slouken@3579
   391
        int i = 0;
slouken@3580
   392
        int a, b, c, d;
slouken@3579
   393
slouken@3579
   394
        if (CPU_haveCPUID()) {
slouken@5115
   395
            cpuid(0x00000000, a, b, c, d);
slouken@5115
   396
            SDL_CPUType[i++] = (char)(b & 0xff); b >>= 8;
slouken@5115
   397
            SDL_CPUType[i++] = (char)(b & 0xff); b >>= 8;
slouken@5115
   398
            SDL_CPUType[i++] = (char)(b & 0xff); b >>= 8;
slouken@5115
   399
            SDL_CPUType[i++] = (char)(b & 0xff); b >>= 8;
slouken@5115
   400
            SDL_CPUType[i++] = (char)(d & 0xff); d >>= 8;
slouken@5115
   401
            SDL_CPUType[i++] = (char)(d & 0xff); d >>= 8;
slouken@5115
   402
            SDL_CPUType[i++] = (char)(d & 0xff); d >>= 8;
slouken@5115
   403
            SDL_CPUType[i++] = (char)(d & 0xff); d >>= 8;
slouken@5115
   404
            SDL_CPUType[i++] = (char)(c & 0xff); c >>= 8;
slouken@5115
   405
            SDL_CPUType[i++] = (char)(c & 0xff); c >>= 8;
slouken@5115
   406
            SDL_CPUType[i++] = (char)(c & 0xff); c >>= 8;
slouken@5115
   407
            SDL_CPUType[i++] = (char)(c & 0xff); c >>= 8;
slouken@5115
   408
        }
slouken@5115
   409
        if (!SDL_CPUType[0]) {
slouken@5115
   410
            SDL_strlcpy(SDL_CPUType, "Unknown", sizeof(SDL_CPUType));
slouken@5115
   411
        }
slouken@5115
   412
    }
slouken@5115
   413
    return SDL_CPUType;
slouken@5115
   414
}
slouken@5115
   415
icculus@5981
   416
icculus@5981
   417
#ifdef TEST_MAIN  /* !!! FIXME: only used for test at the moment. */
slouken@5115
   418
static const char *
slouken@5120
   419
SDL_GetCPUName(void)
slouken@5115
   420
{
slouken@5115
   421
    static char SDL_CPUName[48];
slouken@5115
   422
slouken@5115
   423
    if (!SDL_CPUName[0]) {
slouken@5115
   424
        int i = 0;
slouken@5115
   425
        int a, b, c, d;
slouken@5115
   426
slouken@5115
   427
        if (CPU_haveCPUID()) {
slouken@3580
   428
            cpuid(0x80000000, a, b, c, d);
slouken@3580
   429
            if (a >= 0x80000004) {
slouken@3580
   430
                cpuid(0x80000002, a, b, c, d);
slouken@5115
   431
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
slouken@5115
   432
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
slouken@5115
   433
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
slouken@5115
   434
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
slouken@5115
   435
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
slouken@5115
   436
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
slouken@5115
   437
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
slouken@5115
   438
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
slouken@5115
   439
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
slouken@5115
   440
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
slouken@5115
   441
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
slouken@5115
   442
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
slouken@5115
   443
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
slouken@5115
   444
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
slouken@5115
   445
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
slouken@5115
   446
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
slouken@3580
   447
                cpuid(0x80000003, a, b, c, d);
slouken@5115
   448
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
slouken@5115
   449
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
slouken@5115
   450
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
slouken@5115
   451
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
slouken@5115
   452
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
slouken@5115
   453
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
slouken@5115
   454
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
slouken@5115
   455
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
slouken@5115
   456
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
slouken@5115
   457
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
slouken@5115
   458
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
slouken@5115
   459
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
slouken@5115
   460
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
slouken@5115
   461
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
slouken@5115
   462
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
slouken@5115
   463
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
slouken@3580
   464
                cpuid(0x80000004, a, b, c, d);
slouken@5115
   465
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
slouken@5115
   466
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
slouken@5115
   467
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
slouken@5115
   468
                SDL_CPUName[i++] = (char)(a & 0xff); a >>= 8;
slouken@5115
   469
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
slouken@5115
   470
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
slouken@5115
   471
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
slouken@5115
   472
                SDL_CPUName[i++] = (char)(b & 0xff); b >>= 8;
slouken@5115
   473
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
slouken@5115
   474
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
slouken@5115
   475
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
slouken@5115
   476
                SDL_CPUName[i++] = (char)(c & 0xff); c >>= 8;
slouken@5115
   477
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
slouken@5115
   478
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
slouken@5115
   479
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
slouken@5115
   480
                SDL_CPUName[i++] = (char)(d & 0xff); d >>= 8;
slouken@3579
   481
            }
slouken@3579
   482
        }
slouken@5115
   483
        if (!SDL_CPUName[0]) {
slouken@5115
   484
            SDL_strlcpy(SDL_CPUName, "Unknown", sizeof(SDL_CPUName));
slouken@3579
   485
        }
slouken@3579
   486
    }
slouken@5115
   487
    return SDL_CPUName;
slouken@5115
   488
}
icculus@5981
   489
#endif
slouken@5115
   490
slouken@5120
   491
int
slouken@5120
   492
SDL_GetCPUCacheLineSize(void)
slouken@5115
   493
{
slouken@5115
   494
    const char *cpuType = SDL_GetCPUType();
slouken@5115
   495
slouken@5115
   496
    if (SDL_strcmp(cpuType, "GenuineIntel") == 0) {
slouken@5115
   497
        int a, b, c, d;
slouken@5115
   498
slouken@5115
   499
        cpuid(0x00000001, a, b, c, d);
slouken@5115
   500
        return (((b >> 8) & 0xff) * 8);
slouken@5115
   501
    } else if (SDL_strcmp(cpuType, "AuthenticAMD") == 0) {
slouken@5115
   502
        int a, b, c, d;
slouken@5115
   503
slouken@5115
   504
        cpuid(0x80000005, a, b, c, d);
slouken@5115
   505
        return (c & 0xff);
slouken@5115
   506
    } else {
slouken@5115
   507
        /* Just make a guess here... */
slouken@5115
   508
        return SDL_CACHELINE_SIZE;
slouken@5115
   509
    }
slouken@3579
   510
}
slouken@3579
   511
slouken@739
   512
static Uint32 SDL_CPUFeatures = 0xFFFFFFFF;
slouken@739
   513
slouken@1895
   514
static Uint32
slouken@1895
   515
SDL_GetCPUFeatures(void)
slouken@739
   516
{
slouken@1895
   517
    if (SDL_CPUFeatures == 0xFFFFFFFF) {
slouken@1895
   518
        SDL_CPUFeatures = 0;
slouken@1895
   519
        if (CPU_haveRDTSC()) {
slouken@1895
   520
            SDL_CPUFeatures |= CPU_HAS_RDTSC;
slouken@1895
   521
        }
slouken@5389
   522
        if (CPU_haveAltiVec()) {
slouken@5389
   523
            SDL_CPUFeatures |= CPU_HAS_ALTIVEC;
slouken@5389
   524
        }
slouken@1895
   525
        if (CPU_haveMMX()) {
slouken@1895
   526
            SDL_CPUFeatures |= CPU_HAS_MMX;
slouken@1895
   527
        }
slouken@5389
   528
        if (CPU_have3DNow()) {
slouken@5389
   529
            SDL_CPUFeatures |= CPU_HAS_3DNOW;
slouken@5389
   530
        }
slouken@1895
   531
        if (CPU_haveSSE()) {
slouken@1895
   532
            SDL_CPUFeatures |= CPU_HAS_SSE;
slouken@1895
   533
        }
slouken@1895
   534
        if (CPU_haveSSE2()) {
slouken@1895
   535
            SDL_CPUFeatures |= CPU_HAS_SSE2;
slouken@1895
   536
        }
slouken@5259
   537
        if (CPU_haveSSE3()) {
slouken@5259
   538
            SDL_CPUFeatures |= CPU_HAS_SSE3;
slouken@5259
   539
        }
slouken@5263
   540
        if (CPU_haveSSE41()) {
slouken@5263
   541
            SDL_CPUFeatures |= CPU_HAS_SSE41;
slouken@5263
   542
        }
slouken@5263
   543
        if (CPU_haveSSE42()) {
slouken@5263
   544
            SDL_CPUFeatures |= CPU_HAS_SSE42;
slouken@1895
   545
        }
slouken@8148
   546
        if (CPU_haveAVX()) {
slouken@8148
   547
            SDL_CPUFeatures |= CPU_HAS_AVX;
slouken@8148
   548
        }
slouken@1895
   549
    }
slouken@1895
   550
    return SDL_CPUFeatures;
slouken@739
   551
}
slouken@739
   552
slouken@1895
   553
SDL_bool
slouken@1895
   554
SDL_HasRDTSC(void)
slouken@745
   555
{
slouken@1895
   556
    if (SDL_GetCPUFeatures() & CPU_HAS_RDTSC) {
slouken@1895
   557
        return SDL_TRUE;
slouken@1895
   558
    }
slouken@1895
   559
    return SDL_FALSE;
slouken@745
   560
}
slouken@745
   561
slouken@1895
   562
SDL_bool
slouken@5389
   563
SDL_HasAltiVec(void)
slouken@5389
   564
{
slouken@5389
   565
    if (SDL_GetCPUFeatures() & CPU_HAS_ALTIVEC) {
slouken@5389
   566
        return SDL_TRUE;
slouken@5389
   567
    }
slouken@5389
   568
    return SDL_FALSE;
slouken@5389
   569
}
slouken@5389
   570
slouken@5389
   571
SDL_bool
slouken@1895
   572
SDL_HasMMX(void)
slouken@739
   573
{
slouken@1895
   574
    if (SDL_GetCPUFeatures() & CPU_HAS_MMX) {
slouken@1895
   575
        return SDL_TRUE;
slouken@1895
   576
    }
slouken@1895
   577
    return SDL_FALSE;
slouken@739
   578
}
slouken@739
   579
slouken@1895
   580
SDL_bool
slouken@5389
   581
SDL_Has3DNow(void)
slouken@5389
   582
{
slouken@5389
   583
    if (SDL_GetCPUFeatures() & CPU_HAS_3DNOW) {
slouken@5389
   584
        return SDL_TRUE;
slouken@5389
   585
    }
slouken@5389
   586
    return SDL_FALSE;
slouken@5389
   587
}
slouken@5389
   588
slouken@5389
   589
SDL_bool
slouken@1895
   590
SDL_HasSSE(void)
slouken@739
   591
{
slouken@1895
   592
    if (SDL_GetCPUFeatures() & CPU_HAS_SSE) {
slouken@1895
   593
        return SDL_TRUE;
slouken@1895
   594
    }
slouken@1895
   595
    return SDL_FALSE;
slouken@739
   596
}
slouken@739
   597
slouken@1895
   598
SDL_bool
slouken@1895
   599
SDL_HasSSE2(void)
slouken@804
   600
{
slouken@1895
   601
    if (SDL_GetCPUFeatures() & CPU_HAS_SSE2) {
slouken@1895
   602
        return SDL_TRUE;
slouken@1895
   603
    }
slouken@1895
   604
    return SDL_FALSE;
slouken@804
   605
}
slouken@804
   606
slouken@1895
   607
SDL_bool
slouken@5259
   608
SDL_HasSSE3(void)
slouken@778
   609
{
slouken@5259
   610
    if (SDL_GetCPUFeatures() & CPU_HAS_SSE3) {
slouken@5259
   611
        return SDL_TRUE;
slouken@5259
   612
    }
slouken@5259
   613
    return SDL_FALSE;
slouken@5259
   614
}
slouken@5259
   615
slouken@5259
   616
SDL_bool
slouken@5263
   617
SDL_HasSSE41(void)
slouken@5259
   618
{
slouken@5263
   619
    if (SDL_GetCPUFeatures() & CPU_HAS_SSE41) {
slouken@5263
   620
        return SDL_TRUE;
slouken@5263
   621
    }
slouken@5263
   622
    return SDL_FALSE;
slouken@5263
   623
}
slouken@5263
   624
slouken@5263
   625
SDL_bool
slouken@5263
   626
SDL_HasSSE42(void)
slouken@5263
   627
{
slouken@5263
   628
    if (SDL_GetCPUFeatures() & CPU_HAS_SSE42) {
slouken@1895
   629
        return SDL_TRUE;
slouken@1895
   630
    }
slouken@1895
   631
    return SDL_FALSE;
slouken@778
   632
}
slouken@778
   633
slouken@8148
   634
SDL_bool
slouken@8148
   635
SDL_HasAVX(void)
slouken@8148
   636
{
slouken@8148
   637
    if (SDL_GetCPUFeatures() & CPU_HAS_AVX) {
slouken@8148
   638
        return SDL_TRUE;
slouken@8148
   639
    }
slouken@8148
   640
    return SDL_FALSE;
slouken@8148
   641
}
slouken@8148
   642
slouken@7821
   643
static int SDL_SystemRAM = 0;
slouken@7821
   644
slouken@7821
   645
int
slouken@7821
   646
SDL_GetSystemRAM(void)
slouken@7821
   647
{
slouken@7821
   648
    if (!SDL_SystemRAM) {
slouken@7821
   649
#if defined(HAVE_SYSCONF) && defined(_SC_PHYS_PAGES) && defined(_SC_PAGESIZE)
slouken@7821
   650
        if (SDL_SystemRAM <= 0) {
slouken@7821
   651
            SDL_SystemRAM = (int)((Sint64)sysconf(_SC_PHYS_PAGES) * sysconf(_SC_PAGESIZE) / (1024*1024));
slouken@7821
   652
        }
slouken@7821
   653
#endif
slouken@7821
   654
#ifdef HAVE_SYSCTLBYNAME
slouken@7821
   655
        if (SDL_SystemRAM <= 0) {
slouken@8240
   656
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
slouken@7826
   657
#ifdef HW_REALMEM
slouken@7826
   658
            int mib[2] = {CTL_HW, HW_REALMEM};
slouken@7826
   659
#else
slouken@7826
   660
            /* might only report up to 2 GiB */
slouken@7826
   661
            int mib[2] = {CTL_HW, HW_PHYSMEM};
slouken@7826
   662
#endif /* HW_REALMEM */
slouken@7826
   663
#else
slouken@7821
   664
            int mib[2] = {CTL_HW, HW_MEMSIZE};
slouken@8240
   665
#endif /* __FreeBSD__ || __FreeBSD_kernel__ */
slouken@7823
   666
            Uint64 memsize = 0;
slouken@7821
   667
            size_t len = sizeof(memsize);
slouken@7821
   668
            
slouken@7821
   669
            if (sysctl(mib, 2, &memsize, &len, NULL, 0) == 0) {
slouken@7821
   670
                SDL_SystemRAM = (int)(memsize / (1024*1024));
slouken@7821
   671
            }
slouken@7821
   672
        }
slouken@7821
   673
#endif
slouken@7821
   674
#ifdef __WIN32__
slouken@7821
   675
        if (SDL_SystemRAM <= 0) {
slouken@7821
   676
            MEMORYSTATUSEX stat;
icculus@7889
   677
            stat.dwLength = sizeof(stat);
slouken@7821
   678
            if (GlobalMemoryStatusEx(&stat)) {
slouken@7821
   679
                SDL_SystemRAM = (int)(stat.ullTotalPhys / (1024 * 1024));
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   680
            }
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   681
        }
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   682
#endif
slouken@7821
   683
    }
slouken@7821
   684
    return SDL_SystemRAM;
slouken@7821
   685
}
slouken@7821
   686
slouken@7821
   687
slouken@739
   688
#ifdef TEST_MAIN
slouken@739
   689
slouken@739
   690
#include <stdio.h>
slouken@739
   691
slouken@1895
   692
int
slouken@1895
   693
main()
slouken@739
   694
{
slouken@3579
   695
    printf("CPU count: %d\n", SDL_GetCPUCount());
slouken@5115
   696
    printf("CPU type: %s\n", SDL_GetCPUType());
slouken@5115
   697
    printf("CPU name: %s\n", SDL_GetCPUName());
slouken@5115
   698
    printf("CacheLine size: %d\n", SDL_GetCPUCacheLineSize());
slouken@1895
   699
    printf("RDTSC: %d\n", SDL_HasRDTSC());
slouken@5389
   700
    printf("Altivec: %d\n", SDL_HasAltiVec());
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   701
    printf("MMX: %d\n", SDL_HasMMX());
slouken@5389
   702
    printf("3DNow: %d\n", SDL_Has3DNow());
slouken@1895
   703
    printf("SSE: %d\n", SDL_HasSSE());
slouken@1895
   704
    printf("SSE2: %d\n", SDL_HasSSE2());
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   705
    printf("SSE3: %d\n", SDL_HasSSE3());
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   706
    printf("SSE4.1: %d\n", SDL_HasSSE41());
slouken@5263
   707
    printf("SSE4.2: %d\n", SDL_HasSSE42());
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   708
    printf("AVX: %d\n", SDL_HasAVX());
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   709
    printf("RAM: %d MB\n", SDL_GetSystemRAM());
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   710
    return 0;
slouken@739
   711
}
slouken@739
   712
slouken@739
   713
#endif /* TEST_MAIN */
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   714
slouken@1895
   715
/* vi: set ts=4 sw=4 expandtab: */