135 lines · c
1// SPDX-License-Identifier: GPL-2.02#include <errno.h>3#include <string.h>4#include "perf_regs.h"5#include "util/sample.h"6#include "debug.h"7 8int __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 14uint64_t __weak arch__intr_reg_mask(void)15{16 return 0;17}18 19uint64_t __weak arch__user_reg_mask(void)20{21 return 0;22}23 24static const struct sample_reg sample_reg_masks[] = {25 SMPL_REG_END26};27 28const struct sample_reg * __weak arch__sample_reg_masks(void)29{30 return sample_reg_masks;31}32 33const 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 59int 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 81out:82 *valp = regs->cache_regs[id];83 return 0;84}85 86uint64_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 111uint64_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