projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | /* | |
| 41 | * call mcount is "e8 <4 byte offset>" | |
| 42 | * The addr points to the 4 byte offset and the caller of this | |
| 43 | * function wants the pointer to e8. Simply subtract one. | |
| 44 | */ | |
| 45 | return addr - 1; | |
| 46 | } | |
| 31e88909 SR |
47 | |
| 48 | #ifdef CONFIG_DYNAMIC_FTRACE | |
| 49 | ||
| 50 | struct dyn_arch_ftrace { | |
| 51 | /* No extra data needed for x86 */ | |
| 52 | }; | |
| 53 | ||
| 54 | #endif /* CONFIG_DYNAMIC_FTRACE */ | |
| a26a2a27 | 55 | #endif /* __ASSEMBLY__ */ |
| 606576ce | 56 | #endif /* CONFIG_FUNCTION_TRACER */ |
| 395a59d0 | 57 | |
| fb52607a | 58 | #ifdef CONFIG_FUNCTION_GRAPH_TRACER |
| caf4b323 FW |
59 | |
| 60 | #ifndef __ASSEMBLY__ | |
| 61 | ||
| 62 | /* | |
| 63 | * Stack of return addresses for functions | |
| 64 | * of a thread. | |
| 65 | * Used in struct thread_info | |
| 66 | */ | |
| 67 | struct ftrace_ret_stack { | |
| 68 | unsigned long ret; | |
| 69 | unsigned long func; | |
| 70 | unsigned long long calltime; | |
| 71 | }; | |
| 72 | ||
| 73 | /* | |
| 74 | * Primary handler of a function return. | |
| 75 | * It relays on ftrace_return_to_handler. | |
| d680fe44 | 76 | * Defined in entry_32/64.S |
| caf4b323 FW |
77 | */ |
| 78 | extern void return_to_handler(void); | |
| 79 | ||
| 80 | #endif /* __ASSEMBLY__ */ | |
| fb52607a | 81 | #endif /* CONFIG_FUNCTION_GRAPH_TRACER */ |
| caf4b323 | 82 | |
| 1965aae3 | 83 | #endif /* _ASM_X86_FTRACE_H */ |