[Linux-ia64] gcc profiling broken on Linux/ia64?
Gary Hade
garyhade@us.ibm.com
Mon Feb 25 12:18:00 GMT 2002
Randolph,
I believe this problem is due to a bug in /usr/lib/gcrt1.o
that was fixed by recent glibc changes to csu/gmon-start.c
(revs 1.13 and 1.14).
Hope this helps.
Gary
--- csu/gmon-start.c.orig Mon Feb 25 01:10:03 2002
+++ csu/gmon-start.c Wed Feb 13 17:08:05 2002
@@ -1,5 +1,5 @@
/* Code to enable profiling at program startup.
- Copyright (C) 1995, 1996, 1997, 2000, 2001 Free Software Foundation, Inc.
+ Copyright (C) 1995,1996,1997,2000,2001,2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -63,7 +63,11 @@
#endif
/* Start keeping profiling records. */
+#ifdef ENTRY_POINT_DECL
+ __monstartup ((u_long) ENTRY_POINT, (u_long) &etext);
+#else
__monstartup ((u_long) &ENTRY_POINT, (u_long) &etext);
+#endif
/* Call _mcleanup before exiting; it will write out gmon.out from the
collected data. */
On Sat, Feb 23, 2002 at 07:10:30PM -0800, Randolph Chung wrote:
> Greetings....
>
> I was wondering if anyone has gotten gcc profiling to work on
> linux/ia64?
>
> $ cat hello.c
> int main(int argc, char **argv) { return 0; }
> $ gcc -pg -o hello hello.c
> $ ./hello
> Segmentation fault
>
> I've tried this with the 2.96 compilers on RedHat 7.2 as well as both
> 2.96 and 3.0.4 compilers on Debian 3.0 (glibc 2.2.4 on RH, 2.2.5 on
> Debian)
>
> Backtrace with gdb looks like this:
>
> (gdb) bt
> #0 __mcount (frompc=16140901064496364080, selfpc=4611686018427390128)
> at mcount.c:96
> #1 0x20000000001fdf30 in mcount () at soinit.c:56
> #2 0x40000000000008b0 in main (argc=1073766400, argv=0x7000a1000005501)
> at hello.c:1
>
> mcount.c:96 toindex = *frompcindex;
>
> (gdb) print frompcindex
> $1 = (u_short *) 0xa000000000471ce8
>
> Any pointers would be much appreciated.
>
> randolph
>
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> Linux-IA64@linuxia64.org
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--
Gary Hade
IBM Linux Technology Center
503-578-4503 IBM T/L: 775-4503
garyhade@us.ibm.com
http://www.ibm.com/linux/ltc
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