catch sigill in memcpy probing

CVS patchset: 1036
CVS date: 2001/11/14 23:49:53

1 files changed, 20 insertions, 1 deletions

diff --git a/src/xine-utils/memcpy.c b/src/xine-utils/memcpy.c
index 5ded24ebc..2d644d4a9 100644
--- a/src/xine-utils/memcpy.c
+++ b/src/xine-utils/memcpy.c
@@ -35,6 +35,8 @@
 
 #include <stdlib.h>
 #include <string.h>
+#include <signal.h>
+#include <setjmp.h>
 #include "xine_internal.h"
 #include "cpu_accel.h"
  
@@ -388,6 +390,15 @@ static unsigned long long int rdtsc()
 }
 #endif
 
+static jmp_buf sigill_return;
+
+static void sigill_handler (int n) {
+
+  printf ("memcpy: SIGILL catched\n");
+
+  longjmp(sigill_return, 1);
+}
+
 
 #define BUFSIZE 1024*1024
 void probe_fast_memcpy(config_values_t *config)
@@ -434,12 +445,20 @@ void probe_fast_memcpy(config_values_t *config)
     if( (config_flags & memcpy_method[i].cpu_require) != 
          memcpy_method[i].cpu_require )
       continue;
-    
+
+    if (setjmp(sigill_return))
+      continue;
+
+    signal (SIGILL, sigill_handler); 
+
     t = rdtsc();
     for(j=0;j<50;j++) {	  
       memcpy_method[i].function(buf2,buf1,BUFSIZE);
       memcpy_method[i].function(buf1,buf2,BUFSIZE);
     }     
+
+    signal (SIGILL, SIG_DFL);
+    
     t = rdtsc() - t;
     memcpy_method[i].time = t;