Attachment 309644 Details for Bug 451831 – patch

[patch] patch

pixman-0.11.4-altivec.patch (text/plain), 1.48 KB, created by David Woodhouse on 2008-06-17 17:43:19 UTC

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Creator: David Woodhouse

Created: 2008-06-17 17:43:19 UTC

Size: 1.48 KB

patch

obsolete

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

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