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[PATCH] Fix profiling support fallout
- From: Mark Kettenis <kettenis at chello dot nl>
- To: gdb-patches at sources dot redhat dot com
- Date: Fri, 14 Feb 2003 21:07:17 +0100 (CET)
- Subject: [PATCH] Fix profiling support fallout
The attached patch fixes a build problem on OpenBSD/i386 (and probably
other a.out systems that have the profiling functions). It makes us
use etext (without underscore) if _etext isn't available.
Checked in.
Mark
Index: ChangeLog
from Mark Kettenis <kettenis@gnu.org>
* configure.in: Add check for _etext.
* maint.c (maintenance_set_profile_cmd): Use etext if _etext isn't
available.
* config.in, configure: regenerated.
Index: configure.in
===================================================================
RCS file: /cvs/src/src/gdb/configure.in,v
retrieving revision 1.121
diff -u -p -r1.121 configure.in
--- configure.in 1 Feb 2003 11:32:19 -0000 1.121
+++ configure.in 14 Feb 2003 20:02:02 -0000
@@ -204,6 +204,16 @@ AC_ARG_ENABLE(profiling,
[enable_profiling=no])
AC_CHECK_FUNCS(monstartup _mcleanup)
+AC_CACHE_CHECK([for _etext], ac_cv_var__etext,
+[AC_TRY_LINK(
+[#include <stdlib.h>
+extern char _etext;
+],
+[free (&_etext);], ac_cv_var__etext=yes, ac_cv_var__etext=no)])
+if test $ac_cv_var__etext = yes; then
+ AC_DEFINE(HAVE__ETEXT, 1,
+ [Define to 1 if your system has the _etext variable. ])
+fi
if test "$enable_profiling" = yes ; then
if test $ac_cv_func_monstartup = no || test $ac_cv_func__mcleanup = no; then
AC_MSG_ERROR(--enable-profiling requires monstartup and _mcleanup)
Index: maint.c
===================================================================
RCS file: /cvs/src/src/gdb/maint.c,v
retrieving revision 1.33
diff -u -p -r1.33 maint.c
--- maint.c 27 Jan 2003 20:25:35 -0000 1.33
+++ maint.c 14 Feb 2003 20:02:02 -0000
@@ -645,6 +645,14 @@ static int maintenance_profile_p;
#if defined (HAVE_MONSTARTUP) && defined (HAVE__MCLEANUP)
+#ifdef HAVE__ETEXT
+extern char _etext;
+#define TEXTEND &_etext
+#else
+extern char etext;
+#define TEXTEND &etext
+#endif
+
static int profiling_state;
static void
@@ -669,7 +677,6 @@ maintenance_set_profile_cmd (char *args,
static int profiling_initialized;
extern void monstartup (unsigned long, unsigned long);
- extern char _etext;
extern int main();
if (!profiling_initialized)
@@ -680,7 +687,7 @@ maintenance_set_profile_cmd (char *args,
/* "main" is now always the first function in the text segment, so use
its address for monstartup. */
- monstartup ((unsigned long) &main, (unsigned long) &_etext);
+ monstartup ((unsigned long) &main, (unsigned long) TEXTEND);
}
else
{