projects / mirror_ubuntu-focal-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| ccbfac29 SR |
2 | #ifndef _ASM_POWERPC_FTRACE |
| 3 | #define _ASM_POWERPC_FTRACE | |
| 4 | ||
| f55d9665 ME |
5 | #include <asm/types.h> |
| 6 | ||
| 606576ce | 7 | #ifdef CONFIG_FUNCTION_TRACER |
| c93bf928 | 8 | #define MCOUNT_ADDR ((unsigned long)(_mcount)) |
| 395a59d0 AS |
9 | #define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */ |
| 10 | ||
| bf528a3a SR |
11 | #ifdef __ASSEMBLY__ |
| 12 | ||
| 13 | /* Based off of objdump optput from glibc */ | |
| 14 | ||
| 15 | #define MCOUNT_SAVE_FRAME \ | |
| 16 | stwu r1,-48(r1); \ | |
| 17 | stw r3, 12(r1); \ | |
| 18 | stw r4, 16(r1); \ | |
| 19 | stw r5, 20(r1); \ | |
| 20 | stw r6, 24(r1); \ | |
| 21 | mflr r3; \ | |
| 22 | lwz r4, 52(r1); \ | |
| 23 | mfcr r5; \ | |
| 24 | stw r7, 28(r1); \ | |
| 25 | stw r8, 32(r1); \ | |
| 26 | stw r9, 36(r1); \ | |
| 27 | stw r10,40(r1); \ | |
| 28 | stw r3, 44(r1); \ | |
| 29 | stw r5, 8(r1) | |
| 30 | ||
| 31 | #define MCOUNT_RESTORE_FRAME \ | |
| 32 | lwz r6, 8(r1); \ | |
| 33 | lwz r0, 44(r1); \ | |
| 34 | lwz r3, 12(r1); \ | |
| 35 | mtctr r0; \ | |
| 36 | lwz r4, 16(r1); \ | |
| 37 | mtcr r6; \ | |
| 38 | lwz r5, 20(r1); \ | |
| 39 | lwz r6, 24(r1); \ | |
| 40 | lwz r0, 52(r1); \ | |
| 41 | lwz r7, 28(r1); \ | |
| 42 | lwz r8, 32(r1); \ | |
| 43 | mtlr r0; \ | |
| 44 | lwz r9, 36(r1); \ | |
| 45 | lwz r10,40(r1); \ | |
| 46 | addi r1, r1, 48 | |
| 47 | ||
| 48 | #else /* !__ASSEMBLY__ */ | |
| ccbfac29 | 49 | extern void _mcount(void); |
| 8fd6e5a8 SR |
50 | |
| 51 | #ifdef CONFIG_DYNAMIC_FTRACE | |
| 15308664 TD |
52 | # define FTRACE_ADDR ((unsigned long)ftrace_caller) |
| 53 | # define FTRACE_REGS_ADDR FTRACE_ADDR | |
| 8fd6e5a8 SR |
54 | static inline unsigned long ftrace_call_adjust(unsigned long addr) |
| 55 | { | |
| 56 | /* reloction of mcount call site is the same as the address */ | |
| 57 | return addr; | |
| 58 | } | |
| 59 | ||
| 60 | struct dyn_arch_ftrace { | |
| f48cb8b4 | 61 | struct module *mod; |
| 8fd6e5a8 SR |
62 | }; |
| 63 | #endif /* CONFIG_DYNAMIC_FTRACE */ | |
| 64 | #endif /* __ASSEMBLY__ */ | |
| ccbfac29 | 65 | |
| 15308664 TD |
66 | #ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS |
| 67 | #define ARCH_SUPPORTS_FTRACE_OPS 1 | |
| 68 | #endif | |
| ccbfac29 | 69 | #endif |
| 395a59d0 | 70 | |
| f55d9665 ME |
71 | #if defined(CONFIG_FTRACE_SYSCALLS) && !defined(__ASSEMBLY__) |
| 72 | #ifdef PPC64_ELF_ABI_v1 | |
| 02424d89 IM |
73 | #define ARCH_HAS_SYSCALL_MATCH_SYM_NAME |
| 74 | static inline bool arch_syscall_match_sym_name(const char *sym, const char *name) | |
| 75 | { | |
| 76 | /* | |
| 77 | * Compare the symbol name with the system call name. Skip the .sys or .SyS | |
| 78 | * prefix from the symbol name and the sys prefix from the system call name and | |
| 79 | * just match the rest. This is only needed on ppc64 since symbol names on | |
| 80 | * 32bit do not start with a period so the generic function will work. | |
| 81 | */ | |
| 82 | return !strcmp(sym + 4, name + 3); | |
| 83 | } | |
| 7167af7c | 84 | #endif |
| f55d9665 | 85 | #endif /* CONFIG_FTRACE_SYSCALLS && !__ASSEMBLY__ */ |
| 02424d89 | 86 | |
| 395a59d0 | 87 | #endif /* _ASM_POWERPC_FTRACE */ |