X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fbacktrace.c;h=91549db347812b516e2eb4fb27b93c54349deb62;hb=46aef12ee5fcb028d20bac654c8a08cf993cfac8;hp=131bdf4fc87881d3440964745579ef842f6c71d9;hpb=5136ce492c414f377f7be9ae32b259abb9f76580;p=openvswitch

diff --git a/lib/backtrace.c b/lib/backtrace.c
index 131bdf4f..91549db3 100644
--- a/lib/backtrace.c
+++ b/lib/backtrace.c
@@ -23,7 +23,7 @@
 #include "compiler.h"
 #include "vlog.h"
 
-VLOG_DEFINE_THIS_MODULE(backtrace)
+VLOG_DEFINE_THIS_MODULE(backtrace);
 
 static uintptr_t OVS_UNUSED
 get_max_stack(void)
@@ -69,20 +69,8 @@ stack_high(void)
 static uintptr_t
 stack_low(void)
 {
-#ifdef __i386__
-    uintptr_t low;
-    asm("movl %%esp,%0" : "=g" (low));
+    uintptr_t low = (uintptr_t) &low;
     return low;
-#elif __x86_64__
-    uintptr_t low;
-    asm("movq %%rsp,%0" : "=g" (low));
-    return low;
-#else
-    /* This causes a warning in GCC that cannot be disabled, so use it only on
-     * non-x86. */
-    int dummy;
-    return (uintptr_t) &dummy;
-#endif
 }
 
 static bool
@@ -95,6 +83,7 @@ in_stack(void *p)
 void
 backtrace_capture(struct backtrace *backtrace)
 {
+#ifdef __GNUC__
     void **frame;
     size_t n;
 
@@ -107,4 +96,7 @@ backtrace_capture(struct backtrace *backtrace)
         backtrace->frames[n++] = (uintptr_t) frame[1];
     }
     backtrace->n_frames = n;
+#else
+    backtrace->n_frames = 0;
+#endif
 }