1 // SPDX-License-Identifier: GPL-2.0 2 #include <errno.h> 3 #include <string.h> 4 #include "perf_regs.h" 5 #include "util/sample.h" 6 #include "debug.h" 7 8 int __weak arch_sdt_arg_parse_op(char *old_op __maybe_unused, 9 char **new_op __maybe_unused) 10 { 11 return SDT_ARG_SKIP; 12 } 13 14 uint64_t __weak arch__intr_reg_mask(void) 15 { 16 return 0; 17 } 18 19 uint64_t __weak arch__user_reg_mask(void) 20 { 21 return 0; 22 } 23 24 static const struct sample_reg sample_reg_masks[] = { 25 SMPL_REG_END 26 }; 27 28 const struct sample_reg * __weak arch__sample_reg_masks(void) 29 { 30 return sample_reg_masks; 31 } 32 33 const char *perf_reg_name(int id, const char *arch) 34 { 35 const char *reg_name = NULL; 36 37 if (!strcmp(arch, "csky")) 38 reg_name = __perf_reg_name_csky(id); 39 else if (!strcmp(arch, "loongarch")) 40 reg_name = __perf_reg_name_loongarch(id); 41 else if (!strcmp(arch, "mips")) 42 reg_name = __perf_reg_name_mips(id); 43 else if (!strcmp(arch, "powerpc")) 44 reg_name = __perf_reg_name_powerpc(id); 45 else if (!strcmp(arch, "riscv")) 46 reg_name = __perf_reg_name_riscv(id); 47 else if (!strcmp(arch, "s390")) 48 reg_name = __perf_reg_name_s390(id); 49 else if (!strcmp(arch, "x86")) 50 reg_name = __perf_reg_name_x86(id); 51 else if (!strcmp(arch, "arm")) 52 reg_name = __perf_reg_name_arm(id); 53 else if (!strcmp(arch, "arm64")) 54 reg_name = __perf_reg_name_arm64(id); 55 56 return reg_name ?: "unknown"; 57 } 58 59 int perf_reg_value(u64 *valp, struct regs_dump *regs, int id) 60 { 61 int i, idx = 0; 62 u64 mask = regs->mask; 63 64 if ((u64)id >= PERF_SAMPLE_REGS_CACHE_SIZE) 65 return -EINVAL; 66 67 if (regs->cache_mask & (1ULL << id)) 68 goto out; 69 70 if (!(mask & (1ULL << id))) 71 return -EINVAL; 72 73 for (i = 0; i < id; i++) { 74 if (mask & (1ULL << i)) 75 idx++; 76 } 77 78 regs->cache_mask |= (1ULL << id); 79 regs->cache_regs[id] = regs->regs[idx]; 80 81 out: 82 *valp = regs->cache_regs[id]; 83 return 0; 84 } 85 86 uint64_t perf_arch_reg_ip(const char *arch) 87 { 88 if (!strcmp(arch, "arm")) 89 return __perf_reg_ip_arm(); 90 else if (!strcmp(arch, "arm64")) 91 return __perf_reg_ip_arm64(); 92 else if (!strcmp(arch, "csky")) 93 return __perf_reg_ip_csky(); 94 else if (!strcmp(arch, "loongarch")) 95 return __perf_reg_ip_loongarch(); 96 else if (!strcmp(arch, "mips")) 97 return __perf_reg_ip_mips(); 98 else if (!strcmp(arch, "powerpc")) 99 return __perf_reg_ip_powerpc(); 100 else if (!strcmp(arch, "riscv")) 101 return __perf_reg_ip_riscv(); 102 else if (!strcmp(arch, "s390")) 103 return __perf_reg_ip_s390(); 104 else if (!strcmp(arch, "x86")) 105 return __perf_reg_ip_x86(); 106 107 pr_err("Fail to find IP register for arch %s, returns 0\n", arch); 108 return 0; 109 } 110 111 uint64_t perf_arch_reg_sp(const char *arch) 112 { 113 if (!strcmp(arch, "arm")) 114 return __perf_reg_sp_arm(); 115 else if (!strcmp(arch, "arm64")) 116 return __perf_reg_sp_arm64(); 117 else if (!strcmp(arch, "csky")) 118 return __perf_reg_sp_csky(); 119 else if (!strcmp(arch, "loongarch")) 120 return __perf_reg_sp_loongarch(); 121 else if (!strcmp(arch, "mips")) 122 return __perf_reg_sp_mips(); 123 else if (!strcmp(arch, "powerpc")) 124 return __perf_reg_sp_powerpc(); 125 else if (!strcmp(arch, "riscv")) 126 return __perf_reg_sp_riscv(); 127 else if (!strcmp(arch, "s390")) 128 return __perf_reg_sp_s390(); 129 else if (!strcmp(arch, "x86")) 130 return __perf_reg_sp_x86(); 131 132 pr_err("Fail to find SP register for arch %s, returns 0\n", arch); 133 return 0; 134 } 135