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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:
- 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_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:
- 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
- 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)
- bras %r1,2f
- 0: .long ftrace_trace_function
- 1: .long function_trace_stop
- 2: l %r2,1b-0b(%r1)
- icm %r2,0xf,0(%r2)
- jnz 3f
- st %r14,56(%r15)
- lr %r0,%r15
- ahi %r15,-96
- l %r3,100(%r15)
- la %r2,0(%r14)
- st %r0,__SF_BACKCHAIN(%r15)
- la %r3,0(%r3)
- l %r14,0b-0b(%r1)
- l %r14,0(%r14)
- basr %r14,%r14
- ahi %r15,96
- l %r14,56(%r15)
- 3: lm %r2,%r5,16(%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)
- bras %r1,2f
- 0: .long ftrace_trace_function
- 1: .long function_trace_stop
- 2: l %r2,1b-0b(%r1)
- icm %r2,0xf,0(%r2)
- jnz 3f
- st %r14,56(%r15)
- lr %r0,%r15
- ahi %r15,-96
- l %r3,100(%r15)
- la %r2,0(%r14)
- st %r0,__SF_BACKCHAIN(%r15)
- la %r3,0(%r3)
- l %r14,0b-0b(%r1)
- l %r14,0(%r14)
- basr %r14,%r14
- ahi %r15,96
- l %r14,56(%r15)
- 3: lm %r2,%r5,16(%r15)
- br %r14
- #endif /* CONFIG_DYNAMIC_FTRACE */
- #endif /* CONFIG_64BIT */
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