/* * 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 */