64 lines
1.5 KiB
Diff
64 lines
1.5 KiB
Diff
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--- pixman-0.11.4/pixman/pixman-pict.c~ 2008-06-09 06:56:34.000000000 +0100
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+++ pixman-0.11.4/pixman/pixman-pict.c 2008-06-17 18:38:34.000000000 +0100
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@@ -1920,7 +1920,59 @@ pixman_bool_t pixman_have_vmx (void) {
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return have_vmx;
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}
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-#else
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+#elif defined (__linux__)
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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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+#include <linux/auxvec.h>
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+#include <asm/cputable.h>
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+
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+pixman_bool_t pixman_have_vmx (void)
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+{
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+ if (!initialized) {
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+ char fname[64];
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+ unsigned long buf[64];
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+ ssize_t count = 0;
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+ pid_t pid;
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+ int fd, i;
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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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+ for (i = 0; i <= (count / sizeof(unsigned long)); i += 2) {
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+ /* Read more if buf is empty... */
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+ if (i == (count / sizeof(unsigned long))) {
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+ count = read(fd, buf, sizeof(buf));
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+ if (count <= 0)
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+ break;
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+ i = 0;
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+ }
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+
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+ if (buf[i] == AT_HWCAP) {
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+ have_vmx = !!(buf[i+1] & PPC_FEATURE_HAS_ALTIVEC);
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+ initialized = 1;
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+ break;
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+ } else if (buf[i] == AT_NULL) {
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+ break;
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+ }
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+ }
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+ close(fd);
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+ }
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+ }
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+ if (!initialized) {
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+ /* Something went wrong. Assume 'no' rather than playing
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+ fragile tricks with catching SIGILL. */
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+ have_vmx = FALSE;
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+ initialized = 1;
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+ }
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+
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+ return have_vmx;
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+}
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+#else /* !__APPLE__ && !__linux__ */
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#include <signal.h>
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static void vmx_test(int sig, siginfo_t *si, void *unused) {
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