1 #ifndef _ASM_POWERPC_FTRACE 2 #define _ASM_POWERPC_FTRACE 3 4 #include <asm/types.h> 5 6 #ifdef CONFIG_FUNCTION_TRACER 7 #define MCOUNT_ADDR ((unsigned long)(_mcount)) 8 #define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */ 9 10 #ifdef __ASSEMBLY__ 11 12 /* Based off of objdump optput from glibc */ 13 14 #define MCOUNT_SAVE_FRAME \ 15 stwu r1,-48(r1); \ 16 stw r3, 12(r1); \ 17 stw r4, 16(r1); \ 18 stw r5, 20(r1); \ 19 stw r6, 24(r1); \ 20 mflr r3; \ 21 lwz r4, 52(r1); \ 22 mfcr r5; \ 23 stw r7, 28(r1); \ 24 stw r8, 32(r1); \ 25 stw r9, 36(r1); \ 26 stw r10,40(r1); \ 27 stw r3, 44(r1); \ 28 stw r5, 8(r1) 29 30 #define MCOUNT_RESTORE_FRAME \ 31 lwz r6, 8(r1); \ 32 lwz r0, 44(r1); \ 33 lwz r3, 12(r1); \ 34 mtctr r0; \ 35 lwz r4, 16(r1); \ 36 mtcr r6; \ 37 lwz r5, 20(r1); \ 38 lwz r6, 24(r1); \ 39 lwz r0, 52(r1); \ 40 lwz r7, 28(r1); \ 41 lwz r8, 32(r1); \ 42 mtlr r0; \ 43 lwz r9, 36(r1); \ 44 lwz r10,40(r1); \ 45 addi r1, r1, 48 46 47 #else /* !__ASSEMBLY__ */ 48 extern void _mcount(void); 49 50 #ifdef CONFIG_DYNAMIC_FTRACE 51 # define FTRACE_ADDR ((unsigned long)ftrace_caller) 52 # define FTRACE_REGS_ADDR FTRACE_ADDR 53 static inline unsigned long ftrace_call_adjust(unsigned long addr) 54 { 55 /* reloction of mcount call site is the same as the address */ 56 return addr; 57 } 58 59 struct dyn_arch_ftrace { 60 struct module *mod; 61 }; 62 #endif /* CONFIG_DYNAMIC_FTRACE */ 63 #endif /* __ASSEMBLY__ */ 64 65 #ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS 66 #define ARCH_SUPPORTS_FTRACE_OPS 1 67 #endif 68 #endif 69 70 #if defined(CONFIG_FTRACE_SYSCALLS) && !defined(__ASSEMBLY__) 71 #ifdef PPC64_ELF_ABI_v1 72 #define ARCH_HAS_SYSCALL_MATCH_SYM_NAME 73 static inline bool arch_syscall_match_sym_name(const char *sym, const char *name) 74 { 75 /* 76 * Compare the symbol name with the system call name. Skip the .sys or .SyS 77 * prefix from the symbol name and the sys prefix from the system call name and 78 * just match the rest. This is only needed on ppc64 since symbol names on 79 * 32bit do not start with a period so the generic function will work. 80 */ 81 return !strcmp(sym + 4, name + 3); 82 } 83 #endif 84 #endif /* CONFIG_FTRACE_SYSCALLS && !__ASSEMBLY__ */ 85 86 #endif /* _ASM_POWERPC_FTRACE */ 87