X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=tools-for-build%2Fwhere-is-mcontext.c;h=6c579b1dc1eed33867b5fbf3971f8ea1efeac2b1;hb=eb520f74a818e381004bd69668d7ba1abb94a0bb;hp=7754111e997a32c08983810b886c09af70c7ee51;hpb=c65f4c06c83c9dbf213cece638ad3d59710841bb;p=sbcl.git

diff --git a/tools-for-build/where-is-mcontext.c b/tools-for-build/where-is-mcontext.c
index 7754111..6c579b1 100644
--- a/tools-for-build/where-is-mcontext.c
+++ b/tools-for-build/where-is-mcontext.c
@@ -12,7 +12,7 @@
  * While most of SBCL is derived from the CMU CL system, many
  * utilities for the build process (like this one) were written from
  * scratch after the fork from CMU CL.
- * 
+ *
  * This software is in the public domain and is provided with
  * absolutely no warranty. See the COPYING and CREDITS files for
  * more information.
@@ -20,35 +20,32 @@
 
 #include <stdio.h>
 #include <stddef.h>
+#include <stdlib.h>
 #include <sys/ucontext.h>
 
 int main (int argc, char *argv[]) {
-    
+
     if(argc != 1) {
-	fprintf(stderr,"%s: command line arguments provided.  Don't do that.\n", argv[0]);
-	exit(1);
+        fprintf(stderr,"%s: command line arguments provided.  Don't do that.\n", argv[0]);
+        exit(1);
     }
-    
+
     printf("\
 /* This is an automatically-generated file; please do not edit it.\n\
    See the program tools-for-build/where-is-mcontext.c.\n\
  */\n\n");
-    
+
     printf("\
 #ifndef PPC_LINUX_MCONTEXT_H\n\
 #define PPC_LINUX_MCONTEXT_H\n\n");
 
-    switch (offsetof(ucontext_t,uc_mcontext)) {
-    case 192:
-	printf("#define GLIBC232_STYLE_UCONTEXT\n\n");
-	break;
-    case 20:
-	printf("#define GLIBC231_STYLE_UCONTEXT\n\n");
-	break;
-    default:
-	printf("#error \"Unknown PPC/Linux ucontext layout\"\n\n");
+    if (offsetof(ucontext_t,uc_mcontext) > 40) {
+        printf("#define GLIBC232_STYLE_UCONTEXT\n\n");
+    } else {
+        printf("#define GLIBC231_STYLE_UCONTEXT\n\n");
     }
     printf("\
 #endif /* PPC_LINUX_MCONTEXT_H */\n");
+    exit(0);
 }