Fixed bug 1434 - Add AltiVec detection for OpenBSD/powerpc
authorSam Lantinga <slouken@libsdl.org>
Wed, 18 Jul 2012 13:06:38 -0700
changeset 63638506dd64e859
parent 6362 562a9fe60603
child 6365 975e23e06124
Fixed bug 1434 - Add AltiVec detection for OpenBSD/powerpc

Brad Smith 2012-02-29 19:31:46 PST

The attached patch adds AltiVec detection for OpenBSD/powerpc. Please apply the
patch to both 2.0 and 1.2.
src/cpuinfo/SDL_cpuinfo.c
     1.1 --- a/src/cpuinfo/SDL_cpuinfo.c	Wed Jul 18 10:47:41 2012 -0700
     1.2 +++ b/src/cpuinfo/SDL_cpuinfo.c	Wed Jul 18 13:06:38 2012 -0700
     1.3 @@ -33,6 +33,10 @@
     1.4  #endif
     1.5  #if defined(__MACOSX__) && (defined(__ppc__) || defined(__ppc64__))
     1.6  #include <sys/sysctl.h>         /* For AltiVec check */
     1.7 +#elif defined(__OpenBSD__) && defined(__powerpc__)
     1.8 +#include <sys/param.h>
     1.9 +#include <sys/sysctl.h> /* For AltiVec check */
    1.10 +#include <machine/cpu.h>
    1.11  #elif SDL_ALTIVEC_BLITTERS && HAVE_SETJMP
    1.12  #include <signal.h>
    1.13  #include <setjmp.h>
    1.14 @@ -51,7 +55,7 @@
    1.15  #define CPU_HAS_SSE41   0x00000100
    1.16  #define CPU_HAS_SSE42   0x00000200
    1.17  
    1.18 -#if SDL_ALTIVEC_BLITTERS && HAVE_SETJMP && !__MACOSX__
    1.19 +#if SDL_ALTIVEC_BLITTERS && HAVE_SETJMP && !__MACOSX__ && !__OpenBSD__
    1.20  /* This is the brute force way of detecting instruction sets...
    1.21     the idea is borrowed from the libmpeg2 library - thanks!
    1.22   */
    1.23 @@ -214,8 +218,12 @@
    1.24  CPU_haveAltiVec(void)
    1.25  {
    1.26      volatile int altivec = 0;
    1.27 -#if defined(__MACOSX__) && (defined(__ppc__) || defined(__ppc64__))
    1.28 +#if (defined(__MACOSX__) && (defined(__ppc__) || defined(__ppc64__))) || (defined(__OpenBSD__) && defined(__powerpc__))
    1.29 +#ifdef __OpenBSD__
    1.30 +    int selectors[2] = { CTL_MACHDEP, CPU_ALTIVEC };
    1.31 +#else
    1.32      int selectors[2] = { CTL_HW, HW_VECTORUNIT };
    1.33 +#endif
    1.34      int hasVectorUnit = 0;
    1.35      size_t length = sizeof(hasVectorUnit);
    1.36      int error = sysctl(selectors, 2, &hasVectorUnit, &length, NULL, 0);