projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 6ac2a4dd MS |
1 | /* |
| 2 | * Copyright IBM Corp. 2008,2009 | |
| 3 | * | |
| 4 | * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>, | |
| 5 | * | |
| 6 | */ | |
| 7 | ||
| 8 | #include <asm/asm-offsets.h> | |
| 9 | ||
| 10 | .globl ftrace_stub | |
| 11 | ftrace_stub: | |
| 12 | br %r14 | |
| 13 | ||
| 14 | .globl _mcount | |
| 15 | _mcount: | |
| 16 | #ifdef CONFIG_DYNAMIC_FTRACE | |
| 17 | br %r14 | |
| 18 | ||
| 19 | .data | |
| 20 | .globl ftrace_dyn_func | |
| 21 | ftrace_dyn_func: | |
| 22 | .quad ftrace_stub | |
| 23 | .previous | |
| 24 | ||
| 25 | .globl ftrace_caller | |
| 26 | ftrace_caller: | |
| 27 | #endif | |
| 28 | larl %r1,function_trace_stop | |
| 29 | icm %r1,0xf,0(%r1) | |
| 30 | bnzr %r14 | |
| 31 | stmg %r2,%r5,32(%r15) | |
| 32 | stg %r14,112(%r15) | |
| 33 | lgr %r1,%r15 | |
| 34 | aghi %r15,-160 | |
| 35 | stg %r1,__SF_BACKCHAIN(%r15) | |
| 36 | lgr %r2,%r14 | |
| 37 | lg %r3,168(%r15) | |
| 38 | #ifdef CONFIG_DYNAMIC_FTRACE | |
| 39 | larl %r14,ftrace_dyn_func | |
| 40 | #else | |
| 41 | larl %r14,ftrace_trace_function | |
| 42 | #endif | |
| 43 | lg %r14,0(%r14) | |
| 44 | basr %r14,%r14 | |
| 45 | #ifdef CONFIG_FUNCTION_GRAPH_TRACER | |
| 46 | #ifdef CONFIG_DYNAMIC_FTRACE | |
| 47 | .globl ftrace_graph_caller | |
| 48 | ftrace_graph_caller: | |
| 49 | # This unconditional branch gets runtime patched. Change only if | |
| 50 | # you know what you are doing. See ftrace_enable_graph_caller(). | |
| 51 | j 0f | |
| 52 | #endif | |
| 53 | lg %r2,272(%r15) | |
| 54 | lg %r3,168(%r15) | |
| 55 | brasl %r14,prepare_ftrace_return | |
| 56 | stg %r2,168(%r15) | |
| 57 | 0: | |
| 58 | #endif | |
| 59 | aghi %r15,160 | |
| 60 | lmg %r2,%r5,32(%r15) | |
| 61 | lg %r14,112(%r15) | |
| 62 | br %r14 | |
| 63 | ||
| 64 | #ifdef CONFIG_FUNCTION_GRAPH_TRACER | |
| 65 | ||
| 66 | .globl return_to_handler | |
| 67 | return_to_handler: | |
| 68 | stmg %r2,%r5,32(%r15) | |
| 69 | lgr %r1,%r15 | |
| 70 | aghi %r15,-160 | |
| 71 | stg %r1,__SF_BACKCHAIN(%r15) | |
| 72 | brasl %r14,ftrace_return_to_handler | |
| 73 | aghi %r15,160 | |
| 74 | lgr %r14,%r2 | |
| 75 | lmg %r2,%r5,32(%r15) | |
| 76 | br %r14 | |
| 77 | ||
| 78 | #endif |