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/*
* Copyright IBM Corp. 2008,2009
*
* Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>,
*
*/
#include <asm/asm-offsets.h>
.globl ftrace_stub
ftrace_stub:
br %r14
#ifdef CONFIG_64BIT
#ifdef CONFIG_DYNAMIC_FTRACE
.globl _mcount
_mcount:
br %r14
.globl ftrace_caller
ftrace_caller:
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_dyn_func
lg %r14,0(%r14)
basr %r14,%r14
aghi %r15,160
lmg %r2,%r5,32(%r15)
lg %r14,112(%r15)
br %r14
.data
.globl ftrace_dyn_func
ftrace_dyn_func:
.quad ftrace_stub
.previous
#else /* CONFIG_DYNAMIC_FTRACE */
.globl _mcount
_mcount:
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
aghi %r15,160
lmg %r2,%r5,32(%r15)
lg %r14,112(%r15)
br %r14
#endif /* CONFIG_DYNAMIC_FTRACE */
#else /* CONFIG_64BIT */
#ifdef CONFIG_DYNAMIC_FTRACE
.globl _mcount
_mcount:
br %r14
.globl ftrace_caller
ftrace_caller:
stm %r2,%r5,16(%r15)
st %r14,56(%r15)
lr %r1,%r15
ahi %r15,-96
l %r3,100(%r15)
la %r2,0(%r14)
st %r1,__SF_BACKCHAIN(%r15)
la %r3,0(%r3)
bras %r14,0f
.long ftrace_dyn_func
0: l %r14,0(%r14)
l %r14,0(%r14)
basr %r14,%r14
ahi %r15,96
lm %r2,%r5,16(%r15)
l %r14,56(%r15)
br %r14
.data
.globl ftrace_dyn_func
ftrace_dyn_func:
.long ftrace_stub
.previous
#else /* CONFIG_DYNAMIC_FTRACE */
.globl _mcount
_mcount:
stm %r2,%r5,16(%r15)
st %r14,56(%r15)
lr %r1,%r15
ahi %r15,-96
l %r3,100(%r15)
la %r2,0(%r14)
st %r1,__SF_BACKCHAIN(%r15)
la %r3,0(%r3)
bras %r14,0f
.long ftrace_trace_function
0: l %r14,0(%r14)
l %r14,0(%r14)
basr %r14,%r14
ahi %r15,96
lm %r2,%r5,16(%r15)
l %r14,56(%r15)
br %r14
#endif /* CONFIG_DYNAMIC_FTRACE */
#endif /* CONFIG_64BIT */
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