^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #ifndef _ASM_POWERPC_FTRACE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #define _ASM_POWERPC_FTRACE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <asm/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #ifdef CONFIG_FUNCTION_TRACER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #define MCOUNT_ADDR ((unsigned long)(_mcount))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define HAVE_FUNCTION_GRAPH_RET_ADDR_PTR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #ifdef __ASSEMBLY__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) /* Based off of objdump optput from glibc */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define MCOUNT_SAVE_FRAME \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) stwu r1,-48(r1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) stw r3, 12(r1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) stw r4, 16(r1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) stw r5, 20(r1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) stw r6, 24(r1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) mflr r3; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) lwz r4, 52(r1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) mfcr r5; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) stw r7, 28(r1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) stw r8, 32(r1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) stw r9, 36(r1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) stw r10,40(r1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) stw r3, 44(r1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) stw r5, 8(r1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define MCOUNT_RESTORE_FRAME \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) lwz r6, 8(r1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) lwz r0, 44(r1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) lwz r3, 12(r1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) mtctr r0; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) lwz r4, 16(r1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) mtcr r6; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) lwz r5, 20(r1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) lwz r6, 24(r1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) lwz r0, 52(r1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) lwz r7, 28(r1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) lwz r8, 32(r1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) mtlr r0; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) lwz r9, 36(r1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) lwz r10,40(r1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) addi r1, r1, 48
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #else /* !__ASSEMBLY__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) extern void _mcount(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) static inline unsigned long ftrace_call_adjust(unsigned long addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) /* reloction of mcount call site is the same as the address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) return addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) struct dyn_arch_ftrace {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) struct module *mod;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #endif /* __ASSEMBLY__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define ARCH_SUPPORTS_FTRACE_OPS 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #endif /* CONFIG_FUNCTION_TRACER */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #ifndef __ASSEMBLY__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #ifdef CONFIG_FTRACE_SYSCALLS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * Some syscall entry functions on powerpc start with "ppc_" (fork and clone,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * for instance) or ppc32_/ppc64_. We should also match the sys_ variant with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * those.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #define ARCH_HAS_SYSCALL_MATCH_SYM_NAME
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #ifdef PPC64_ELF_ABI_v1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) static inline bool arch_syscall_match_sym_name(const char *sym, const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) /* We need to skip past the initial dot, and the __se_sys alias */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) return !strcmp(sym + 1, name) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) (!strncmp(sym, ".__se_sys", 9) && !strcmp(sym + 6, name)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) (!strncmp(sym, ".ppc_", 5) && !strcmp(sym + 5, name + 4)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) (!strncmp(sym, ".ppc32_", 7) && !strcmp(sym + 7, name + 4)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) (!strncmp(sym, ".ppc64_", 7) && !strcmp(sym + 7, name + 4));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) static inline bool arch_syscall_match_sym_name(const char *sym, const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) return !strcmp(sym, name) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) (!strncmp(sym, "__se_sys", 8) && !strcmp(sym + 5, name)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) (!strncmp(sym, "ppc_", 4) && !strcmp(sym + 4, name + 4)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) (!strncmp(sym, "ppc32_", 6) && !strcmp(sym + 6, name + 4)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) (!strncmp(sym, "ppc64_", 6) && !strcmp(sym + 6, name + 4));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) #endif /* PPC64_ELF_ABI_v1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) #endif /* CONFIG_FTRACE_SYSCALLS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) #ifdef CONFIG_PPC64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #include <asm/paca.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) static inline void this_cpu_disable_ftrace(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) get_paca()->ftrace_enabled = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) static inline void this_cpu_enable_ftrace(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) get_paca()->ftrace_enabled = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) /* Disable ftrace on this CPU if possible (may not be implemented) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) static inline void this_cpu_set_ftrace_enabled(u8 ftrace_enabled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) get_paca()->ftrace_enabled = ftrace_enabled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) static inline u8 this_cpu_get_ftrace_enabled(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) return get_paca()->ftrace_enabled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) #else /* CONFIG_PPC64 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) static inline void this_cpu_disable_ftrace(void) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) static inline void this_cpu_enable_ftrace(void) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) static inline void this_cpu_set_ftrace_enabled(u8 ftrace_enabled) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) static inline u8 this_cpu_get_ftrace_enabled(void) { return 1; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) #endif /* CONFIG_PPC64 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) #endif /* !__ASSEMBLY__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) #endif /* _ASM_POWERPC_FTRACE */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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