2004-06-07 Randolph Chung <tausq@debian.org>

[deliverable/binutils-gdb.git] / gdb / testsuite / gdb.base / coremaker.c

diff --git a/gdb/testsuite/gdb.base/coremaker.c b/gdb/testsuite/gdb.base/coremaker.c
index 79418bea4ed3bbb3ec001e92e66579e6981383e6..4bb16d46aa489739cfbf7c132609f6fc937e323d 100644 (file)
--- a/gdb/testsuite/gdb.base/coremaker.c
+++ b/gdb/testsuite/gdb.base/coremaker.c
@@ -1,10 +1,109 @@
 /* Simple little program that just generates a core dump from inside some
    nested function calls. */
 
+#include <stdio.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#ifndef __STDC__
+#define        const   /**/
+#endif
+
+#define MAPSIZE (8 * 1024)
+
+/* Don't make these automatic vars or we will have to walk back up the
+   stack to access them. */
+
+char *buf1;
+char *buf2;
+
+int coremaker_data = 1;        /* In Data section */
+int coremaker_bss;     /* In BSS section */
+
+const int coremaker_ro = 201;  /* In Read-Only Data section */
+
+/* Note that if the mapping fails for any reason, we set buf2
+   to -1 and the testsuite notices this and reports it as
+   a failure due to a mapping error.  This way we don't have
+   to test for specific errors when running the core maker. */
+
+void
+mmapdata ()
+{
+  int j, fd;
+
+  /* Allocate and initialize a buffer that will be used to write
+     the file that is later mapped in. */
+
+  buf1 = (char *) malloc (MAPSIZE);
+  for (j = 0; j < MAPSIZE; ++j)
+    {
+      buf1[j] = j;
+    }
+
+  /* Write the file to map in */
+
+  fd = open ("coremmap.data", O_CREAT | O_RDWR, 0666);
+  if (fd == -1)
+    {
+      perror ("coremmap.data open failed");
+      buf2 = (char *) -1;
+      return;
+    }
+  write (fd, buf1, MAPSIZE);
+
+  /* Now map the file into our address space as buf2 */
+
+  buf2 = (char *) mmap (0, MAPSIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
+  if (buf2 == (char *) -1)
+    {
+      perror ("mmap failed");
+      return;
+    }
+
+  /* Verify that the original data and the mapped data are identical.
+     If not, we'd rather fail now than when trying to access the mapped
+     data from the core file. */
+
+  for (j = 0; j < MAPSIZE; ++j)
+    {
+      if (buf1[j] != buf2[j])
+       {
+         fprintf (stderr, "mapped data is incorrect");
+         buf2 = (char *) -1;
+         return;
+       }
+    }
+}
 
 void
 func2 ()
 {
+  int coremaker_local[5];
+  int i;
+
+#ifdef SA_FULLDUMP
+  /* Force a corefile that includes the data section for AIX.  */
+  {
+    struct sigaction sa;
+
+    sigaction (SIGABRT, (struct sigaction *)0, &sa);
+    sa.sa_flags |= SA_FULLDUMP;
+    sigaction (SIGABRT, &sa, (struct sigaction *)0);
+  }
+#endif
+
+  /* Make sure that coremaker_local doesn't get optimized away. */
+  for (i = 0; i < 5; i++)
+    coremaker_local[i] = i;
+  coremaker_bss = 0;
+  for (i = 0; i < 5; i++)
+    coremaker_bss += coremaker_local[i];
+  coremaker_data = coremaker_ro + 1;
   abort ();
 }
 
@@ -14,8 +113,10 @@ func1 ()
   func2 ();
 }
 
-main ()
+int main ()
 {
+  mmapdata ();
   func1 ();
+  return 0;
 }