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| author | Jan Glauber <jang@linux.vnet.ibm.com> | 2011-07-24 12:48:19 +0400 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-07-24 12:48:21 +0400 |
| commit | 144d634a21caff1d54cb4bb0d073774e88130045 (patch) | |
| tree | 9eea288248189b899ee85ba346cf344e57dd402a /arch/s390/kernel/mcount64.S | |
| parent | 603d1a50acf252621a3598618b018b8123aaba64 (diff) | |
| download | linux-144d634a21caff1d54cb4bb0d073774e88130045.tar.xz | |
[S390] fix s390 assembler code alignments
The alignment is missing for various global symbols in s390 assembly code.
With a recent gcc and an instruction like stgrl this can lead to a
specification exception if the instruction uses such a mis-aligned address.
Specify the alignment explicitely and while add it define __ALIGN for s390
and use the ENTRY define to save some lines of code.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/mcount64.S')
| -rw-r--r-- | arch/s390/kernel/mcount64.S | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/arch/s390/kernel/mcount64.S b/arch/s390/kernel/mcount64.S index e73667286ac0..f70cadec68fc 100644 --- a/arch/s390/kernel/mcount64.S +++ b/arch/s390/kernel/mcount64.S @@ -5,21 +5,19 @@ * */ +#include <linux/linkage.h> #include <asm/asm-offsets.h> .section .kprobes.text, "ax" - .globl ftrace_stub -ftrace_stub: +ENTRY(ftrace_stub) br %r14 - .globl _mcount -_mcount: +ENTRY(_mcount) #ifdef CONFIG_DYNAMIC_FTRACE br %r14 - .globl ftrace_caller -ftrace_caller: +ENTRY(ftrace_caller) #endif larl %r1,function_trace_stop icm %r1,0xf,0(%r1) @@ -37,8 +35,7 @@ ftrace_caller: #ifdef CONFIG_FUNCTION_GRAPH_TRACER lg %r2,168(%r15) lg %r3,272(%r15) - .globl ftrace_graph_caller -ftrace_graph_caller: +ENTRY(ftrace_graph_caller) # The bras instruction gets runtime patched to call prepare_ftrace_return. # See ftrace_enable_ftrace_graph_caller. The patched instruction is: # bras %r14,prepare_ftrace_return @@ -52,8 +49,7 @@ ftrace_graph_caller: #ifdef CONFIG_FUNCTION_GRAPH_TRACER - .globl return_to_handler -return_to_handler: +ENTRY(return_to_handler) stmg %r2,%r5,32(%r15) lgr %r1,%r15 aghi %r15,-160 |