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69 lines
1.6 KiB
69 lines
1.6 KiB
--- libvisual-0.4.0/libvisual/lv_cpu.c.orig 2006-01-22 13:23:37.000000000 +0000 |
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+++ libvisual-0.4.0/libvisual/lv_cpu.c 2008-03-11 16:00:56.000000000 +0000 |
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@@ -50,8 +50,19 @@ |
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#endif |
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#if defined(VISUAL_OS_LINUX) |
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+#if defined(VISUAL_ARCH_POWERPC) |
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+#include <sys/types.h> |
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+#include <sys/stat.h> |
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+#include <fcntl.h> |
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+#include <unistd.h> |
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+#include <stdio.h> |
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+ |
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+#include <linux/auxvec.h> |
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+#include <asm/cputable.h> |
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+#else /* VISUAL_ARCH_POWERPC */ |
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#include <signal.h> |
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#endif |
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+#endif |
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#if defined(VISUAL_OS_WIN32) |
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#include <windows.h> |
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@@ -154,6 +165,46 @@ static void check_os_altivec_support( vo |
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if (err == 0) |
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if (has_vu != 0) |
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__lv_cpu_caps.hasAltiVec = 1; |
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+#elif defined (VISUAL_OS_LINUX) |
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+ static int available = -1; |
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+ int new_avail = 0; |
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+ char fname[64]; |
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+ unsigned long buf[64]; |
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+ ssize_t count; |
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+ pid_t pid; |
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+ int fd, i; |
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+ |
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+ if (available != -1) |
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+ return; |
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+ |
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+ pid = getpid(); |
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+ snprintf(fname, sizeof(fname)-1, "/proc/%d/auxv", pid); |
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+ |
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+ fd = open(fname, O_RDONLY); |
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+ if (fd < 0) |
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+ goto out; |
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+more: |
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+ count = read(fd, buf, sizeof(buf)); |
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+ if (count < 0) |
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+ goto out_close; |
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+ |
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+ for (i=0; i < (count / sizeof(unsigned long)); i += 2) { |
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+ if (buf[i] == AT_HWCAP) { |
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+ new_avail = !!(buf[i+1] & PPC_FEATURE_HAS_ALTIVEC); |
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+ goto out_close; |
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+ } else if (buf[i] == AT_NULL) { |
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+ goto out_close; |
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+ } |
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+ } |
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+ |
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+ if (count == sizeof(buf)) |
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+ goto more; |
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+out_close: |
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+ close(fd); |
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+out: |
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+ available = new_avail; |
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+ if (available) |
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+ __lv_cpu_caps.hasAltiVec = 1; |
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#else /* !VISUAL_OS_DARWIN */ |
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/* no Darwin, do it the brute-force way */ |
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/* this is borrowed from the libmpeg2 library */
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