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 #ifdef HAVE_PERF_REGS_SUPPORT 25 26 const char *perf_reg_name(int id, const char *arch) 27 { 28 const char *reg_name = NULL; 29 30 if (!strcmp(arch, "csky")) 31 reg_name = __perf_reg_name_csky(id); 32 else if (!strcmp(arch, "loongarch")) 33 reg_name = __perf_reg_name_loongarch(id); 34 else if (!strcmp(arch, "mips")) 35 reg_name = __perf_reg_name_mips(id); 36 else if (!strcmp(arch, "powerpc")) 37 reg_name = __perf_reg_name_powerpc(id); 38 else if (!strcmp(arch, "riscv")) 39 reg_name = __perf_reg_name_riscv(id); 40 else if (!strcmp(arch, "s390")) 41 reg_name = __perf_reg_name_s390(id); 42 else if (!strcmp(arch, "x86")) 43 reg_name = __perf_reg_name_x86(id); 44 else if (!strcmp(arch, "arm")) 45 reg_name = __perf_reg_name_arm(id); 46 else if (!strcmp(arch, "arm64")) 47 reg_name = __perf_reg_name_arm64(id); 48 49 return reg_name ?: "unknown"; 50 } 51 52 int perf_reg_value(u64 *valp, struct regs_dump *regs, int id) 53 { 54 int i, idx = 0; 55 u64 mask = regs->mask; 56 57 if ((u64)id >= PERF_SAMPLE_REGS_CACHE_SIZE) 58 return -EINVAL; 59 60 if (regs->cache_mask & (1ULL << id)) 61 goto out; 62 63 if (!(mask & (1ULL << id))) 64 return -EINVAL; 65 66 for (i = 0; i < id; i++) { 67 if (mask & (1ULL << i)) 68 idx++; 69 } 70 71 regs->cache_mask |= (1ULL << id); 72 regs->cache_regs[id] = regs->regs[idx]; 73 74 out: 75 *valp = regs->cache_regs[id]; 76 return 0; 77 } 78 79 uint64_t perf_arch_reg_ip(const char *arch) 80 { 81 if (!strcmp(arch, "arm")) 82 return __perf_reg_ip_arm(); 83 else if (!strcmp(arch, "arm64")) 84 return __perf_reg_ip_arm64(); 85 else if (!strcmp(arch, "csky")) 86 return __perf_reg_ip_csky(); 87 else if (!strcmp(arch, "loongarch")) 88 return __perf_reg_ip_loongarch(); 89 else if (!strcmp(arch, "mips")) 90 return __perf_reg_ip_mips(); 91 else if (!strcmp(arch, "powerpc")) 92 return __perf_reg_ip_powerpc(); 93 else if (!strcmp(arch, "riscv")) 94 return __perf_reg_ip_riscv(); 95 else if (!strcmp(arch, "s390")) 96 return __perf_reg_ip_s390(); 97 else if (!strcmp(arch, "x86")) 98 return __perf_reg_ip_x86(); 99 100 pr_err("Fail to find IP register for arch %s, returns 0\n", arch); 101 return 0; 102 } 103 104 uint64_t perf_arch_reg_sp(const char *arch) 105 { 106 if (!strcmp(arch, "arm")) 107 return __perf_reg_sp_arm(); 108 else if (!strcmp(arch, "arm64")) 109 return __perf_reg_sp_arm64(); 110 else if (!strcmp(arch, "csky")) 111 return __perf_reg_sp_csky(); 112 else if (!strcmp(arch, "loongarch")) 113 return __perf_reg_sp_loongarch(); 114 else if (!strcmp(arch, "mips")) 115 return __perf_reg_sp_mips(); 116 else if (!strcmp(arch, "powerpc")) 117 return __perf_reg_sp_powerpc(); 118 else if (!strcmp(arch, "riscv")) 119 return __perf_reg_sp_riscv(); 120 else if (!strcmp(arch, "s390")) 121 return __perf_reg_sp_s390(); 122 else if (!strcmp(arch, "x86")) 123 return __perf_reg_sp_x86(); 124 125 pr_err("Fail to find SP register for arch %s, returns 0\n", arch); 126 return 0; 127 } 128 129 #endif 130