[PATCH] Fix profiling on hppa (2/2)
Carlos O'Donell
carlos@baldric.uwo.ca
Fri Feb 20 04:16:00 GMT 2004
libc-alpha,
This is the second part of the gprof fixes required for hppa. All local
changes. First redefine _start so monstartup is passed a proper
function descriptor. Then we add proper _MCOUNT_DEC_ and profil_counter
implementations.
Tested on hppa. If you run a 64-bit box, you need a recent 2.6 kernel
for profiling to work (due to compat_siginfo_t changes).
Thanks,
c.
2003-11-15 Randolph Chung <tausq@debian.org>
* sysdeps/hppa/elf/entry.h (ENTRY_POINT): Use
__canonicalize_funcptr_for_compare for loading _start to handle lazy
binding.
* sysdeps/hppa/machine-gmon.h: New file.
* sysdeps/unis/sysv/linux/hppa/profil-counter.h: New file.
--- libc-orig/sysdeps/hppa/elf/entry.h 1969-12-31 19:00:00.000000000 -0500
+++ libc/sysdeps/hppa/elf/entry.h 2003-12-15 00:38:40.000000000 -0500
@@ -0,0 +1,10 @@
+#ifndef __ASSEMBLY__
+extern void _start (void);
+#endif
+
+/* The function's entry point is stored in the first word of the
+ function descriptor (plabel) of _start(). */
+#define ENTRY_POINT __canonicalize_funcptr_for_compare(_start)
+
+/* We have to provide a special declaration. */
+#define ENTRY_POINT_DECL(class) class void _start (void);
--- libc-orig/sysdeps/hppa/machine-gmon.h 1969-12-31 19:00:00.000000000 -0500
+++ libc/sysdeps/hppa/machine-gmon.h 2003-12-15 00:38:40.000000000 -0500
@@ -0,0 +1,25 @@
+/* Machine-specific calling sequence for `mcount' profiling function. PA-RISC
+ Copyright (C) 1995, 1996, 1997, 2000 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
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* We can call _mcount directly since gcc supplies the correct
+ * arguments */
+#define _MCOUNT_DECL(from, self) \
+ void _mcount (u_long from, u_long self)
+
+#define MCOUNT
--- libc-orig/sysdeps/unix/sysv/linux/hppa/profil-counter.h 2000-10-14 23:27:46.000000000 -0400
+++ libc/sysdeps/unix/sysv/linux/hppa/profil-counter.h 2003-12-15 00:38:40.000000000 -0500
@@ -1,2 +1,25 @@
-/* We can use the ix86 version. */
-#include <sysdeps/unix/sysv/linux/i386/profil-counter.h>
+/* Machine-dependent SIGPROF signal handler. PA-RISC version
+ Copyright (C) 1996, 1997, 2000 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
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+static void
+profil_counter (int signr, siginfo_t *si, struct ucontext *uctx)
+{
+ unsigned long ip = uctx->uc_mcontext.sc_iaoq[0] & ~0x3;
+ profil_count ((void *) ip);
+}
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