forked from Minki/linux
144d634a21
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>
64 lines
1.2 KiB
ArmAsm
64 lines
1.2 KiB
ArmAsm
/*
|
|
* Copyright IBM Corp. 2008,2009
|
|
*
|
|
* Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>,
|
|
*
|
|
*/
|
|
|
|
#include <linux/linkage.h>
|
|
#include <asm/asm-offsets.h>
|
|
|
|
.section .kprobes.text, "ax"
|
|
|
|
ENTRY(ftrace_stub)
|
|
br %r14
|
|
|
|
ENTRY(_mcount)
|
|
#ifdef CONFIG_DYNAMIC_FTRACE
|
|
br %r14
|
|
|
|
ENTRY(ftrace_caller)
|
|
#endif
|
|
larl %r1,function_trace_stop
|
|
icm %r1,0xf,0(%r1)
|
|
bnzr %r14
|
|
stmg %r2,%r5,32(%r15)
|
|
stg %r14,112(%r15)
|
|
lgr %r1,%r15
|
|
aghi %r15,-160
|
|
stg %r1,__SF_BACKCHAIN(%r15)
|
|
lgr %r2,%r14
|
|
lg %r3,168(%r15)
|
|
larl %r14,ftrace_trace_function
|
|
lg %r14,0(%r14)
|
|
basr %r14,%r14
|
|
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
|
|
lg %r2,168(%r15)
|
|
lg %r3,272(%r15)
|
|
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
|
|
bras %r14,0f
|
|
0: stg %r2,168(%r15)
|
|
#endif
|
|
aghi %r15,160
|
|
lmg %r2,%r5,32(%r15)
|
|
lg %r14,112(%r15)
|
|
br %r14
|
|
|
|
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
|
|
|
|
ENTRY(return_to_handler)
|
|
stmg %r2,%r5,32(%r15)
|
|
lgr %r1,%r15
|
|
aghi %r15,-160
|
|
stg %r1,__SF_BACKCHAIN(%r15)
|
|
brasl %r14,ftrace_return_to_handler
|
|
aghi %r15,160
|
|
lgr %r14,%r2
|
|
lmg %r2,%r5,32(%r15)
|
|
br %r14
|
|
|
|
#endif
|