Write and read FIRM profiling information in little-endian format.

[libfirm] / ir / ir / irprofile.c

diff --git a/ir/ir/irprofile.c b/ir/ir/irprofile.c
index f889270..352455c 100644 (file)
--- a/ir/ir/irprofile.c
+++ b/ir/ir/irprofile.c
@@ -22,7 +22,6 @@
  * @brief       Code instrumentation and execution count profiling.
  * @author      Adam M. Szalkowski, Steven Schaefer
  * @date        06.04.2006, 11.11.2010
- * @version     $Id$
  */
 #include "config.h"
 
@@ -511,8 +510,9 @@ static unsigned int *
 parse_profile(const char *filename, unsigned int num_blocks)
 {
        unsigned int *result = NULL;
-       char buf[8];
-       size_t ret;
+       char          buf[8];
+       size_t        ret;
+       unsigned int  i;
 
        FILE *f = fopen(filename, "rb");
        if (!f) {
@@ -528,9 +528,22 @@ parse_profile(const char *filename, unsigned int num_blocks)
        }
 
        result = XMALLOCN(unsigned int, num_blocks);
-       if (fread(result, sizeof(unsigned int) * num_blocks, 1, f) < 1) {
+
+       /* The profiling output format is defined to be a sequence of integer
+        * values stored little endian format. */
+       for (i = 0; i < num_blocks; ++i) {
+               char bytes[4];
+
+               if ((ret = fread(bytes, 4, 1, f)) < 1)
+                       break;
+
+               result[i] = (bytes[0] <<  0) | (bytes[1] <<  8)
+                         | (bytes[2] << 16) | (bytes[3] << 24);
+       }
+
+       if (ret < 1) {
                DBG((dbg, LEVEL_4, "Failed to read counters... (size: %u)\n",
-                   sizeof(unsigned int) * num_blocks));
+                       sizeof(unsigned int) * num_blocks));
                xfree(result);
                result = NULL;
        }