From: Ulrich Drepper <drepper@redhat.com>
Date: Fri, 2 Sep 2005 20:01:37 +0000 (+0000)
Subject: Don't use mmap when _MUDFLAP is defined.
X-Git-Tag: elfutils-0.120~74
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=618795fbfd64f2dd1fa4375ce704736c70725412;p=thirdparty%2Felfutils.git

Don't use mmap when _MUDFLAP is defined.
---

diff --git a/src/ChangeLog b/src/ChangeLog
index 770dac822..66b095447 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,6 +1,7 @@
 2005-09-02  Ulrich Drepper  <drepper@redhat.com>
 
 	* strings.c (main): Reset elfmap variable afte rmunmap call.
+	[_MUDFLAP] (map_file): Simplify mudflap debugging by not using mmap.
 
 2005-08-28  Ulrich Drepper  <drepper@redhat.com>
 
diff --git a/src/strings.c b/src/strings.c
index 40774e46a..d9434c928 100644
--- a/src/strings.c
+++ b/src/strings.c
@@ -448,15 +448,22 @@ process_chunk (const char *fname, const unsigned char *buf, off64_t to,
 static void *
 map_file (int fd, off64_t start_off, off64_t fdlen, size_t *map_sizep)
 {
+#if _MUDFLAP
+  (void) fd;
+  (void) start_off;
+  (void) fdlen;
+  (void) map_sizep;
+  return MAP_FAILED;
+#else
   /* Maximum size we mmap.  We use an #ifdef to avoid overflows on
      32-bit machines.  64-bit machines these days do not have usable
      address spaces larger than about 43 bits.  Not that any file
      should be that large.  */
-#if SIZE_MAX > 0xffffffff
+# if SIZE_MAX > 0xffffffff
   const size_t mmap_max = 0x4000000000lu;
-#else
+# else
   const size_t mmap_max = 0x40000000lu;
-#endif
+# endif
 
   /* Try to mmap the file.  */
   size_t map_size = MIN ((off64_t) mmap_max, fdlen);
@@ -489,6 +496,7 @@ map_file (int fd, off64_t start_off, off64_t fdlen, size_t *map_sizep)
 
   *map_sizep = map_size;
   return mem;
+#endif
 }