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- #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
- #ifdef CC_USING_FENTRY
- # define MCOUNT_ADDR ((long)(__fentry__))
- #else
- # define MCOUNT_ADDR ((long)(mcount))
- #endif
- #define MCOUNT_INSN_SIZE 5 /* sizeof mcount call */
- #ifdef CONFIG_DYNAMIC_FTRACE
- #define ARCH_SUPPORTS_FTRACE_OPS 1
- #define ARCH_SUPPORTS_FTRACE_SAVE_REGS
- #endif
- #ifndef __ASSEMBLY__
- extern void mcount(void);
- extern atomic_t modifying_ftrace_code;
- extern void __fentry__(void);
- 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 */
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