diff options
Diffstat (limited to 'arch/x86/kernel/ftrace_64.S')
| -rw-r--r-- | arch/x86/kernel/ftrace_64.S | 28 |
1 files changed, 1 insertions, 27 deletions
diff --git a/arch/x86/kernel/ftrace_64.S b/arch/x86/kernel/ftrace_64.S index 75f2b36b41a6..10eb2760ef2c 100644 --- a/arch/x86/kernel/ftrace_64.S +++ b/arch/x86/kernel/ftrace_64.S @@ -13,22 +13,12 @@ .code64 .section .entry.text, "ax" -#ifdef CC_USING_FENTRY # define function_hook __fentry__ EXPORT_SYMBOL(__fentry__) -#else -# define function_hook mcount -EXPORT_SYMBOL(mcount) -#endif #ifdef CONFIG_FRAME_POINTER -# ifdef CC_USING_FENTRY /* Save parent and function stack frames (rip and rbp) */ # define MCOUNT_FRAME_SIZE (8+16*2) -# else -/* Save just function stack frame (rip and rbp) */ -# define MCOUNT_FRAME_SIZE (8+16) -# endif #else /* No need to save a stack frame */ # define MCOUNT_FRAME_SIZE 0 @@ -75,17 +65,13 @@ EXPORT_SYMBOL(mcount) * fentry is called before the stack frame is set up, where as mcount * is called afterward. */ -#ifdef CC_USING_FENTRY + /* Save the parent pointer (skip orig rbp and our return address) */ pushq \added+8*2(%rsp) pushq %rbp movq %rsp, %rbp /* Save the return address (now skip orig rbp, rbp and parent) */ pushq \added+8*3(%rsp) -#else - /* Can't assume that rip is before this (unless added was zero) */ - pushq \added+8(%rsp) -#endif pushq %rbp movq %rsp, %rbp #endif /* CONFIG_FRAME_POINTER */ @@ -113,12 +99,7 @@ EXPORT_SYMBOL(mcount) movq %rdx, RBP(%rsp) /* Copy the parent address into %rsi (second parameter) */ -#ifdef CC_USING_FENTRY movq MCOUNT_REG_SIZE+8+\added(%rsp), %rsi -#else - /* %rdx contains original %rbp */ - movq 8(%rdx), %rsi -#endif /* Move RIP to its proper location */ movq MCOUNT_REG_SIZE+\added(%rsp), %rdi @@ -303,15 +284,8 @@ ENTRY(ftrace_graph_caller) /* Saves rbp into %rdx and fills first parameter */ save_mcount_regs -#ifdef CC_USING_FENTRY leaq MCOUNT_REG_SIZE+8(%rsp), %rsi movq $0, %rdx /* No framepointers needed */ -#else - /* Save address of the return address of traced function */ - leaq 8(%rdx), %rsi - /* ftrace does sanity checks against frame pointers */ - movq (%rdx), %rdx -#endif call prepare_ftrace_return restore_mcount_regs |