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d4cc510c61
linux/arch/arm/kernel
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Uwe Kleine-König d4cc510c61 [ARM] 5418/1: restore lr before leaving mcount 
gcc seems to expect that lr isn't clobbered by mcount, because for a
function starting with:

	static int func(void)
	{
		void *ra = __builtin_return_address(0);

		printk(KERN_EMERG "__builtin_return_address(0) = %pS\n", ra)

		...

the following assembler is generated by gcc 4.3.2:

	   0:   e1a0c00d        mov     ip, sp
	   4:   e92dd810        push    {r4, fp, ip, lr, pc}
	   8:   e24cb004        sub     fp, ip, #4      ; 0x4
	   c:   ebfffffe        bl      0 <mcount>
	  10:   e59f0034        ldr     r0, [pc, #52]
	  14:   e1a0100e        mov     r1, lr
	  18:   ebfffffe        bl      0 <printk>

Without this patch obviously __builtin_return_address(0) yields
func+0x10 instead of the return address of the caller.

Note this patch fixes a similar issue for the routines used with dynamic
ftrace even though this isn't currently selectable for ARM.

Cc: Abhishek Sagar <sagar.abhishek@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-03-05 13:47:15 +00:00
..
.gitignore [ARM] 5194/1: update .gitignore 2008-08-12 19:54:09 +01:00
armksyms.c Merge branch 'mxc-pu-imxfb' of git://pasiphae.extern.pengutronix.de/git/imx/linux-2.6 into devel 2008-12-17 20:04:45 +00:00
arthur.c [ARM] arm/kernel/arthur.c: add MODULE_LICENSE 2008-05-17 22:55:16 +01:00
asm-offsets.c arm: use kbuild.h instead of macros in asm-offsets.c 2008-04-29 08:06:29 -07:00
atags.c clean up atags exporting code 2008-05-30 10:33:49 +02:00
atags.h [ARM] 4736/1: Export atags to userspace and allow kexec to use customised atags 2008-02-04 13:21:03 +00:00
bios32.c PCI: arm: use generic INTx swizzle from PCI core 2009-01-07 11:13:13 -08:00
calls.S [CVE-2009-0029] Rename old_readdir to sys_old_readdir 2009-01-14 14:15:15 +01:00
compat.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
compat.h [ARM] 3365/1: [cleanup] header for compat.c exported functions 2006-03-15 23:17:30 +00:00
crunch-bits.S [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
crunch.c [ARM] Convert asm/io.h to linux/io.h 2008-09-06 12:10:45 +01:00
debug.S [ARM] 5227/1: Add the ENDPROC declarations to the .S files 2008-09-01 12:06:34 +01:00
dma-isa.c [ARM] Convert asm/io.h to linux/io.h 2008-09-06 12:10:45 +01:00
dma.c proc: remove unused get_dma_list() 2008-10-10 04:18:56 +04:00
ecard.c arm: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:43 -08:00
ecard.h [ARM] rpc: ecard: remove deprecated ecard_address() and relatives 2008-07-03 14:25:58 +01:00
elf.c [ARM] 5404/1: Fix condition in arm_elf_read_implies_exec() to set READ_IMPLIES_EXEC 2009-02-19 14:45:27 +00:00
entry-armv.S [ARM] call undefined instruction exception handler with irqs enabled 2009-01-28 10:19:53 +00:00
entry-common.S [ARM] 5418/1: restore lr before leaving mcount 2009-03-05 13:47:15 +00:00
entry-header.S Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
fiq.c [ARM] Convert asm/uaccess.h to linux/uaccess.h 2008-09-06 11:35:55 +01:00
ftrace.c small doc fix: ftrace_dyn_arch_init is called by ftrace_init 2008-12-12 11:15:45 +01:00
head-common.S [ARM] use asm/sections.h 2008-12-01 11:53:07 +00:00
head-nommu.S [ARM] 5227/1: Add the ENDPROC declarations to the .S files 2008-09-01 12:06:34 +01:00
head.S [ARM] 5227/1: Add the ENDPROC declarations to the .S files 2008-09-01 12:06:34 +01:00
init_task.c take init_fs to saner place 2008-12-31 18:07:42 -05:00
io.c [ARM] Convert asm/io.h to linux/io.h 2008-09-06 12:10:45 +01:00
irq.c Use __SPIN_LOCK_UNLOCKED to initialize bad_irq_desc.lock 2009-01-31 01:21:55 +01:00
isa.c [ARM] arch/arm/kernel/isa.c: missing definition of register_isa_ports 2009-01-08 15:53:08 +00:00
iwmmxt.S [ARM] 3707/1: iwmmxt: use the generic thread notifier infrastructure 2006-07-01 19:56:48 +01:00
kgdb.c kgdb, x86, arm, mips, powerpc: ignore user space single stepping 2008-09-26 10:36:41 -05:00
kprobes-decode.c [ARM] 5221/1: fix ldm/stm emulation for kprobes 2008-09-01 12:06:33 +01:00
kprobes.c kprobes: add kprobe_insn_mutex and cleanup arch_remove_kprobe() 2009-01-06 15:59:20 -08:00
machine_kexec.c [ARM] Storage class should be before const qualifier 2009-02-10 09:59:19 +00:00
Makefile [ARM] Improve non-executable support 2008-10-01 16:41:10 +01:00
module.c [ARM] use asm/sections.h 2008-12-01 11:53:07 +00:00
process.c [ARM] Convert asm/uaccess.h to linux/uaccess.h 2008-09-06 11:35:55 +01:00
ptrace.c [ARM] Convert asm/uaccess.h to linux/uaccess.h 2008-09-06 11:35:55 +01:00
ptrace.h [ARM] ptrace: clean up single stepping support 2007-04-21 20:34:58 +01:00
relocate_kernel.S [ARM] 4736/1: Export atags to userspace and allow kexec to use customised atags 2008-02-04 13:21:03 +00:00
setup.c [ARM] 5417/1: Set the correct cacheid for ARMv6 CPUs with ARMv7 style MMU 2009-03-03 12:11:26 +00:00
signal.c [ARM] Convert asm/uaccess.h to linux/uaccess.h 2008-09-06 11:35:55 +01:00
signal.h [ARM] nommu: fixups for the exception vectors 2006-03-27 15:18:50 +01:00
smp.c Merge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-01-02 11:44:09 -08:00
stacktrace.c Merge branch 'core/stacktrace' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2008-07-15 10:31:35 -07:00
stacktrace.h [ARM] Add stacktrace support and make oprofile use it 2007-04-28 09:59:37 +01:00
sys_arm.c [ARM] Convert asm/uaccess.h to linux/uaccess.h 2008-09-06 11:35:55 +01:00
sys_oabi-compat.c [ARM] Convert asm/uaccess.h to linux/uaccess.h 2008-09-06 11:35:55 +01:00
thumbee.c Fix the teehbr_read function prototype 2008-11-10 14:14:11 +00:00
time.c [ARM] remove pc_pointer() 2008-09-06 10:35:51 +01:00
traps.c [ARM] Ensure linux/hardirqs.h is included where required 2008-12-15 10:34:48 +00:00
vmlinux.lds.S [ARM] use asm/sections.h 2008-12-01 11:53:07 +00:00
xscale-cp0.c [ARM] Convert asm/io.h to linux/io.h 2008-09-06 12:10:45 +01:00