| #ifndef _ASM_X86_FTRACE_H |
| #define _ASM_X86_FTRACE_H |
| |
| #ifdef __ASSEMBLY__ |
| |
| /* skip is set if the stack was already partially adjusted */ |
| .macro MCOUNT_SAVE_FRAME skip=0 |
| /* |
| * We add enough stack to save all regs. |
| */ |
| subq $(SS+8-\skip), %rsp |
| movq %rax, RAX(%rsp) |
| movq %rcx, RCX(%rsp) |
| movq %rdx, RDX(%rsp) |
| movq %rsi, RSI(%rsp) |
| movq %rdi, RDI(%rsp) |
| movq %r8, R8(%rsp) |
| movq %r9, R9(%rsp) |
| /* Move RIP to its proper location */ |
| movq SS+8(%rsp), %rdx |
| movq %rdx, RIP(%rsp) |
| .endm |
| |
| .macro MCOUNT_RESTORE_FRAME skip=0 |
| movq R9(%rsp), %r9 |
| movq R8(%rsp), %r8 |
| movq RDI(%rsp), %rdi |
| movq RSI(%rsp), %rsi |
| movq RDX(%rsp), %rdx |
| movq RCX(%rsp), %rcx |
| movq RAX(%rsp), %rax |
| addq $(SS+8-\skip), %rsp |
| .endm |
| |
| #endif |
| |
| #ifdef CONFIG_FUNCTION_TRACER |
| #define MCOUNT_ADDR ((long)(mcount)) |
| #define MCOUNT_INSN_SIZE 5 /* sizeof mcount call */ |
| |
| #ifdef CONFIG_DYNAMIC_FTRACE |
| #define ARCH_SUPPORTS_FTRACE_OPS 1 |
| #ifdef CONFIG_X86_64 |
| #define ARCH_SUPPORTS_FTRACE_SAVE_REGS |
| #endif |
| #endif |
| |
| #ifndef __ASSEMBLY__ |
| extern void mcount(void); |
| extern atomic_t modifying_ftrace_code; |
| |
| static inline unsigned long ftrace_call_adjust(unsigned long addr) |
| { |
| /* |
| * addr is the address of the mcount call instruction. |
| * recordmcount does the necessary offset calculation. |
| */ |
| return addr; |
| } |
| |
| #ifdef CONFIG_DYNAMIC_FTRACE |
| |
| struct dyn_arch_ftrace { |
| /* No extra data needed for x86 */ |
| }; |
| |
| int ftrace_int3_handler(struct pt_regs *regs); |
| |
| #endif /* CONFIG_DYNAMIC_FTRACE */ |
| #endif /* __ASSEMBLY__ */ |
| #endif /* CONFIG_FUNCTION_TRACER */ |
| |
| #endif /* _ASM_X86_FTRACE_H */ |