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1965aae3 PA |
1 | #ifndef _ASM_X86_FTRACE_H |
2 | #define _ASM_X86_FTRACE_H | |
395a59d0 | 3 | |
d680fe44 CG |
4 | #ifdef __ASSEMBLY__ |
5 | ||
6 | .macro MCOUNT_SAVE_FRAME | |
7 | /* taken from glibc */ | |
8 | subq $0x38, %rsp | |
9 | movq %rax, (%rsp) | |
10 | movq %rcx, 8(%rsp) | |
11 | movq %rdx, 16(%rsp) | |
12 | movq %rsi, 24(%rsp) | |
13 | movq %rdi, 32(%rsp) | |
14 | movq %r8, 40(%rsp) | |
15 | movq %r9, 48(%rsp) | |
16 | .endm | |
17 | ||
18 | .macro MCOUNT_RESTORE_FRAME | |
19 | movq 48(%rsp), %r9 | |
20 | movq 40(%rsp), %r8 | |
21 | movq 32(%rsp), %rdi | |
22 | movq 24(%rsp), %rsi | |
23 | movq 16(%rsp), %rdx | |
24 | movq 8(%rsp), %rcx | |
25 | movq (%rsp), %rax | |
26 | addq $0x38, %rsp | |
27 | .endm | |
28 | ||
29 | #endif | |
30 | ||
606576ce | 31 | #ifdef CONFIG_FUNCTION_TRACER |
395a59d0 AS |
32 | #define MCOUNT_ADDR ((long)(mcount)) |
33 | #define MCOUNT_INSN_SIZE 5 /* sizeof mcount call */ | |
34 | ||
35 | #ifndef __ASSEMBLY__ | |
36 | extern void mcount(void); | |
68bf21aa SR |
37 | |
38 | static inline unsigned long ftrace_call_adjust(unsigned long addr) | |
39 | { | |
40 | /* | |
521ccb5c MS |
41 | * addr is the address of the mcount call instruction. |
42 | * recordmcount does the necessary offset calculation. | |
68bf21aa | 43 | */ |
521ccb5c | 44 | return addr; |
68bf21aa | 45 | } |
31e88909 SR |
46 | |
47 | #ifdef CONFIG_DYNAMIC_FTRACE | |
48 | ||
49 | struct dyn_arch_ftrace { | |
50 | /* No extra data needed for x86 */ | |
51 | }; | |
52 | ||
53 | #endif /* CONFIG_DYNAMIC_FTRACE */ | |
a26a2a27 | 54 | #endif /* __ASSEMBLY__ */ |
606576ce | 55 | #endif /* CONFIG_FUNCTION_TRACER */ |
395a59d0 | 56 | |
1965aae3 | 57 | #endif /* _ASM_X86_FTRACE_H */ |