| Heiko Carstens | 5d360a7 | 2008-12-25 13:38:56 +0100 | [diff] [blame] | 1 | /* |
| Heiko Carstens | dfd9f7a | 2009-06-12 10:26:44 +0200 | [diff] [blame^] | 2 | * Copyright IBM Corp. 2008,2009 |
| Heiko Carstens | 5d360a7 | 2008-12-25 13:38:56 +0100 | [diff] [blame] | 3 | * |
| 4 | * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>, |
| 5 | * |
| 6 | */ |
| 7 | |
| Heiko Carstens | cf08734 | 2009-03-18 13:27:34 +0100 | [diff] [blame] | 8 | #include <asm/asm-offsets.h> |
| 9 | |
| Heiko Carstens | dfd9f7a | 2009-06-12 10:26:44 +0200 | [diff] [blame^] | 10 | .globl ftrace_stub |
| 11 | ftrace_stub: |
| 12 | br %r14 |
| 13 | |
| 14 | #ifdef CONFIG_64BIT |
| 15 | |
| 16 | #ifdef CONFIG_DYNAMIC_FTRACE |
| 17 | |
| 18 | .globl _mcount |
| Heiko Carstens | 5d360a7 | 2008-12-25 13:38:56 +0100 | [diff] [blame] | 19 | _mcount: |
| Heiko Carstens | dfd9f7a | 2009-06-12 10:26:44 +0200 | [diff] [blame^] | 20 | br %r14 |
| 21 | |
| 22 | .globl ftrace_caller |
| 23 | ftrace_caller: |
| 24 | stmg %r2,%r5,32(%r15) |
| 25 | stg %r14,112(%r15) |
| 26 | lgr %r1,%r15 |
| 27 | aghi %r15,-160 |
| 28 | stg %r1,__SF_BACKCHAIN(%r15) |
| 29 | lgr %r2,%r14 |
| 30 | lg %r3,168(%r15) |
| 31 | larl %r14,ftrace_dyn_func |
| 32 | lg %r14,0(%r14) |
| 33 | basr %r14,%r14 |
| 34 | aghi %r15,160 |
| 35 | lmg %r2,%r5,32(%r15) |
| 36 | lg %r14,112(%r15) |
| 37 | br %r14 |
| 38 | |
| 39 | .data |
| 40 | .globl ftrace_dyn_func |
| 41 | ftrace_dyn_func: |
| 42 | .quad ftrace_stub |
| 43 | .previous |
| 44 | |
| 45 | #else /* CONFIG_DYNAMIC_FTRACE */ |
| 46 | |
| 47 | .globl _mcount |
| 48 | _mcount: |
| 49 | stmg %r2,%r5,32(%r15) |
| 50 | stg %r14,112(%r15) |
| 51 | lgr %r1,%r15 |
| 52 | aghi %r15,-160 |
| 53 | stg %r1,__SF_BACKCHAIN(%r15) |
| 54 | lgr %r2,%r14 |
| 55 | lg %r3,168(%r15) |
| 56 | larl %r14,ftrace_trace_function |
| 57 | lg %r14,0(%r14) |
| 58 | basr %r14,%r14 |
| 59 | aghi %r15,160 |
| 60 | lmg %r2,%r5,32(%r15) |
| 61 | lg %r14,112(%r15) |
| 62 | br %r14 |
| 63 | |
| 64 | #endif /* CONFIG_DYNAMIC_FTRACE */ |
| 65 | |
| 66 | #else /* CONFIG_64BIT */ |
| 67 | |
| 68 | #ifdef CONFIG_DYNAMIC_FTRACE |
| 69 | |
| 70 | .globl _mcount |
| 71 | _mcount: |
| 72 | br %r14 |
| 73 | |
| 74 | .globl ftrace_caller |
| 75 | ftrace_caller: |
| 76 | stm %r2,%r5,16(%r15) |
| 77 | st %r14,56(%r15) |
| 78 | lr %r1,%r15 |
| 79 | ahi %r15,-96 |
| 80 | l %r3,100(%r15) |
| 81 | la %r2,0(%r14) |
| 82 | st %r1,__SF_BACKCHAIN(%r15) |
| 83 | la %r3,0(%r3) |
| 84 | bras %r14,0f |
| 85 | .long ftrace_dyn_func |
| 86 | 0: l %r14,0(%r14) |
| 87 | l %r14,0(%r14) |
| 88 | basr %r14,%r14 |
| 89 | ahi %r15,96 |
| 90 | lm %r2,%r5,16(%r15) |
| 91 | l %r14,56(%r15) |
| 92 | br %r14 |
| 93 | |
| 94 | .data |
| 95 | .globl ftrace_dyn_func |
| 96 | ftrace_dyn_func: |
| 97 | .long ftrace_stub |
| 98 | .previous |
| 99 | |
| 100 | #else /* CONFIG_DYNAMIC_FTRACE */ |
| 101 | |
| 102 | .globl _mcount |
| 103 | _mcount: |
| 104 | stm %r2,%r5,16(%r15) |
| Heiko Carstens | 5d360a7 | 2008-12-25 13:38:56 +0100 | [diff] [blame] | 105 | st %r14,56(%r15) |
| 106 | lr %r1,%r15 |
| 107 | ahi %r15,-96 |
| 108 | l %r3,100(%r15) |
| 109 | la %r2,0(%r14) |
| Heiko Carstens | cf08734 | 2009-03-18 13:27:34 +0100 | [diff] [blame] | 110 | st %r1,__SF_BACKCHAIN(%r15) |
| Heiko Carstens | 5d360a7 | 2008-12-25 13:38:56 +0100 | [diff] [blame] | 111 | la %r3,0(%r3) |
| 112 | bras %r14,0f |
| 113 | .long ftrace_trace_function |
| 114 | 0: l %r14,0(%r14) |
| 115 | l %r14,0(%r14) |
| 116 | basr %r14,%r14 |
| 117 | ahi %r15,96 |
| Heiko Carstens | dfd9f7a | 2009-06-12 10:26:44 +0200 | [diff] [blame^] | 118 | lm %r2,%r5,16(%r15) |
| Heiko Carstens | 5d360a7 | 2008-12-25 13:38:56 +0100 | [diff] [blame] | 119 | l %r14,56(%r15) |
| 120 | br %r14 |
| 121 | |
| Heiko Carstens | dfd9f7a | 2009-06-12 10:26:44 +0200 | [diff] [blame^] | 122 | #endif /* CONFIG_DYNAMIC_FTRACE */ |
| Heiko Carstens | 5d360a7 | 2008-12-25 13:38:56 +0100 | [diff] [blame] | 123 | #endif /* CONFIG_64BIT */ |