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Jan Beulich adf1423698 [PATCH] i386/x86-64: Work around gcc bug with noreturn functions in unwinder 
Current gcc generates calls not jumps to noreturn functions. When that happens the
return address can point to the next function, which confuses the unwinder.

This patch works around it by marking asynchronous exception
frames in contrast normal call frames in the unwind information.  Then teach
the unwinder to decode this.

For normal call frames the unwinder now subtracts one from the address which avoids
this problem.  The standard libgcc unwinder uses the same trick.

It doesn't include adjustment of the printed address (i.e. for the original
example, it'd still be kernel_math_error+0 that gets displayed, but the
unwinder wouldn't get confused anymore.

This only works with binutils 2.6.17+ and some versions of H.J.Lu's 2.6.16
unfortunately because earlier binutils don't support .cfi_signal_frame

[AK: added automatic detection of the new binutils and wrote description]

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:41 +02:00
..
basic kconfig: integrate split config into silentoldconfig 2006-06-09 07:31:30 +02:00
genksyms kbuild: replace abort() with exit(1) 2006-06-24 23:46:54 +02:00
kconfig kbuild: update help in top level Makefile 2006-09-25 10:02:52 +02:00
ksymoops Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mod kbuild: fail kernel compilation in case of unresolved module symbols 2006-09-25 09:14:30 +02:00
package kbuild: fix "mkdir -p" usage in scripts/package/mkspec 2006-09-25 10:55:44 +02:00
rt-tester [PATCH] rtmutex: Modify rtmutex-tester to test the setscheduler propagation 2006-06-27 17:32:47 -07:00
.gitignore gitignore: ignore more generated files 2006-01-03 11:35:26 +01:00
bin2c.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
binoffset.c update the email address of Randy Dunlap 2006-01-03 13:37:51 +01:00
bloat-o-meter [PATCH] bloat-o-meter: gcc-4 fix 2006-06-25 10:01:00 -07:00
checkincludes.pl Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
checkstack.pl [POWERPC] make checkstack work with ARCH=powerpc 2006-08-25 13:30:27 +10:00
checkversion.pl kbuild: introduce utsrelease.h 2006-07-03 23:30:54 +02:00
conmakehash.c [PATCH] kbuild: signed char fixes for scripts 2005-07-27 22:27:08 +02:00
export_report.pl kbuild: export-symbol usage report generator 2006-06-24 23:14:02 +02:00
extract-ikconfig [PATCH] extract-ikconfig: don't use --long-options 2006-03-24 07:33:21 -08:00
gcc-version.sh Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
gcc-x86_64-has-stack-protector.sh [PATCH] Add the -fstack-protector option to the CFLAGS 2006-09-26 10:52:39 +02:00
gen_initramfs_list.sh kbuild: fix gen_initramfs_list.sh 2006-04-30 23:56:33 +02:00
hdrcheck.sh Use dependencies for 'make headers_install'. 2006-09-24 22:15:14 +01:00
kallsyms.c [PATCH] kallsyms: handle malloc() failure 2006-03-25 08:22:56 -08:00
Kbuild.include [PATCH] i386/x86-64: Work around gcc bug with noreturn functions in unwinder 2006-09-26 10:52:41 +02:00
kernel-doc [PATCH] kernel-doc: ignore __devinit 2006-07-31 13:28:40 -07:00
Lindent [PATCH] Lindent: ignore .indent.pro 2005-07-13 23:09:16 +00:00
Makefile kbuild: modpost on vmlinux regardless of CONFIG_MODULES 2006-09-25 09:01:49 +02:00
Makefile.build kbuild: consistently decide when to rebuild a target 2006-09-25 09:00:00 +02:00
Makefile.clean kbuild: change kbuild to not rely on incorrect GNU make behavior 2006-03-06 00:09:51 +01:00
Makefile.headersinst Merge git://git.infradead.org/~dwmw2/khdrs-2.6 2006-09-24 14:55:52 -07:00
Makefile.host kbuild: remove debug left-over from Makefile.host 2006-09-25 09:05:19 +02:00
Makefile.lib kbuild: fix ia64 breakage after introducing make -rR 2006-07-01 09:58:02 +02:00
Makefile.modinst kbuild: add option for stripping modules while installing them 2006-06-24 23:16:45 +02:00
Makefile.modpost kbuild: fail kernel compilation in case of unresolved module symbols 2006-09-25 09:14:30 +02:00
makelst Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mkcompile_h kbuild: "PREEMPT" in UTS_VERSION 2005-07-14 20:18:07 +00:00
mkmakefile kbuild: Do not overwrite makefile as anohter user 2006-05-08 06:55:32 +02:00
mksysmap spelling: s/retreive/retrieve/ 2006-01-10 00:10:13 +01:00
mkuboot.sh Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mkversion Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
namespace.pl kbuild: fix mode of checkstack.pl and other files. 2006-04-11 13:37:07 +02:00
patch-kernel update the email address of Randy Dunlap 2006-01-03 13:37:51 +01:00
pnmtologo.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
profile2linkerlist.pl [PATCH] x86_64: Basic reorder infrastructure 2006-03-25 09:10:56 -08:00
setlocalversion kbuild: append -dirty for updated but uncommited changes 2006-06-17 00:08:17 +02:00
show_delta kbuild: fix mode of checkstack.pl and other files. 2006-04-11 13:37:07 +02:00
unifdef.c kbuild: replace use of strlcpy with a dedicated implmentation in unifdef 2006-09-25 09:00:00 +02:00
ver_linux ver_linux: don't print reiser4progs version if none found 2006-04-05 13:10:19 +02:00