diff options
Diffstat (limited to 'tools/perf/arch/powerpc')
| -rw-r--r-- | tools/perf/arch/powerpc/Makefile | 1 | ||||
| -rw-r--r-- | tools/perf/arch/powerpc/include/perf_regs.h | 69 | ||||
| -rw-r--r-- | tools/perf/arch/powerpc/util/Build | 2 | ||||
| -rw-r--r-- | tools/perf/arch/powerpc/util/dwarf-regs.c | 40 | ||||
| -rw-r--r-- | tools/perf/arch/powerpc/util/perf_regs.c | 49 | ||||
| -rw-r--r-- | tools/perf/arch/powerpc/util/sym-handling.c | 43 | ||||
| -rw-r--r-- | tools/perf/arch/powerpc/util/unwind-libunwind.c | 96 |
7 files changed, 277 insertions, 23 deletions
diff --git a/tools/perf/arch/powerpc/Makefile b/tools/perf/arch/powerpc/Makefile index 56e05f126..cc3930904 100644 --- a/tools/perf/arch/powerpc/Makefile +++ b/tools/perf/arch/powerpc/Makefile @@ -3,4 +3,5 @@ PERF_HAVE_DWARF_REGS := 1 endif HAVE_KVM_STAT_SUPPORT := 1 +PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET := 1 PERF_HAVE_JITDUMP := 1 diff --git a/tools/perf/arch/powerpc/include/perf_regs.h b/tools/perf/arch/powerpc/include/perf_regs.h new file mode 100644 index 000000000..75de0e92e --- /dev/null +++ b/tools/perf/arch/powerpc/include/perf_regs.h @@ -0,0 +1,69 @@ +#ifndef ARCH_PERF_REGS_H +#define ARCH_PERF_REGS_H + +#include <stdlib.h> +#include <linux/types.h> +#include <asm/perf_regs.h> + +#define PERF_REGS_MASK ((1ULL << PERF_REG_POWERPC_MAX) - 1) +#define PERF_REGS_MAX PERF_REG_POWERPC_MAX +#ifdef __powerpc64__ + #define PERF_SAMPLE_REGS_ABI PERF_SAMPLE_REGS_ABI_64 +#else + #define PERF_SAMPLE_REGS_ABI PERF_SAMPLE_REGS_ABI_32 +#endif + +#define PERF_REG_IP PERF_REG_POWERPC_NIP +#define PERF_REG_SP PERF_REG_POWERPC_R1 + +static const char *reg_names[] = { + [PERF_REG_POWERPC_R0] = "r0", + [PERF_REG_POWERPC_R1] = "r1", + [PERF_REG_POWERPC_R2] = "r2", + [PERF_REG_POWERPC_R3] = "r3", + [PERF_REG_POWERPC_R4] = "r4", + [PERF_REG_POWERPC_R5] = "r5", + [PERF_REG_POWERPC_R6] = "r6", + [PERF_REG_POWERPC_R7] = "r7", + [PERF_REG_POWERPC_R8] = "r8", + [PERF_REG_POWERPC_R9] = "r9", + [PERF_REG_POWERPC_R10] = "r10", + [PERF_REG_POWERPC_R11] = "r11", + [PERF_REG_POWERPC_R12] = "r12", + [PERF_REG_POWERPC_R13] = "r13", + [PERF_REG_POWERPC_R14] = "r14", + [PERF_REG_POWERPC_R15] = "r15", + [PERF_REG_POWERPC_R16] = "r16", + [PERF_REG_POWERPC_R17] = "r17", + [PERF_REG_POWERPC_R18] = "r18", + [PERF_REG_POWERPC_R19] = "r19", + [PERF_REG_POWERPC_R20] = "r20", + [PERF_REG_POWERPC_R21] = "r21", + [PERF_REG_POWERPC_R22] = "r22", + [PERF_REG_POWERPC_R23] = "r23", + [PERF_REG_POWERPC_R24] = "r24", + [PERF_REG_POWERPC_R25] = "r25", + [PERF_REG_POWERPC_R26] = "r26", + [PERF_REG_POWERPC_R27] = "r27", + [PERF_REG_POWERPC_R28] = "r28", + [PERF_REG_POWERPC_R29] = "r29", + [PERF_REG_POWERPC_R30] = "r30", + [PERF_REG_POWERPC_R31] = "r31", + [PERF_REG_POWERPC_NIP] = "nip", + [PERF_REG_POWERPC_MSR] = "msr", + [PERF_REG_POWERPC_ORIG_R3] = "orig_r3", + [PERF_REG_POWERPC_CTR] = "ctr", + [PERF_REG_POWERPC_LINK] = "link", + [PERF_REG_POWERPC_XER] = "xer", + [PERF_REG_POWERPC_CCR] = "ccr", + [PERF_REG_POWERPC_SOFTE] = "softe", + [PERF_REG_POWERPC_TRAP] = "trap", + [PERF_REG_POWERPC_DAR] = "dar", + [PERF_REG_POWERPC_DSISR] = "dsisr" +}; + +static inline const char *perf_reg_name(int id) +{ + return reg_names[id]; +} +#endif /* ARCH_PERF_REGS_H */ diff --git a/tools/perf/arch/powerpc/util/Build b/tools/perf/arch/powerpc/util/Build index c8fe2074d..90ad64b23 100644 --- a/tools/perf/arch/powerpc/util/Build +++ b/tools/perf/arch/powerpc/util/Build @@ -1,6 +1,8 @@ libperf-y += header.o libperf-y += sym-handling.o libperf-y += kvm-stat.o +libperf-y += perf_regs.o libperf-$(CONFIG_DWARF) += dwarf-regs.o libperf-$(CONFIG_DWARF) += skip-callchain-idx.o +libperf-$(CONFIG_LIBUNWIND) += unwind-libunwind.o diff --git a/tools/perf/arch/powerpc/util/dwarf-regs.c b/tools/perf/arch/powerpc/util/dwarf-regs.c index 733151cdf..41bdf9530 100644 --- a/tools/perf/arch/powerpc/util/dwarf-regs.c +++ b/tools/perf/arch/powerpc/util/dwarf-regs.c @@ -10,19 +10,26 @@ */ #include <stddef.h> +#include <errno.h> +#include <string.h> #include <dwarf-regs.h> - +#include <linux/ptrace.h> +#include <linux/kernel.h> +#include "util.h" struct pt_regs_dwarfnum { const char *name; unsigned int dwarfnum; + unsigned int ptregs_offset; }; -#define STR(s) #s -#define REG_DWARFNUM_NAME(r, num) {.name = r, .dwarfnum = num} -#define GPR_DWARFNUM_NAME(num) \ - {.name = STR(%gpr##num), .dwarfnum = num} -#define REG_DWARFNUM_END {.name = NULL, .dwarfnum = 0} +#define REG_DWARFNUM_NAME(r, num) \ + {.name = STR(%)STR(r), .dwarfnum = num, \ + .ptregs_offset = offsetof(struct pt_regs, r)} +#define GPR_DWARFNUM_NAME(num) \ + {.name = STR(%gpr##num), .dwarfnum = num, \ + .ptregs_offset = offsetof(struct pt_regs, gpr[num])} +#define REG_DWARFNUM_END {.name = NULL, .dwarfnum = 0, .ptregs_offset = 0} /* * Reference: @@ -61,12 +68,12 @@ static const struct pt_regs_dwarfnum regdwarfnum_table[] = { GPR_DWARFNUM_NAME(29), GPR_DWARFNUM_NAME(30), GPR_DWARFNUM_NAME(31), - REG_DWARFNUM_NAME("%msr", 66), - REG_DWARFNUM_NAME("%ctr", 109), - REG_DWARFNUM_NAME("%link", 108), - REG_DWARFNUM_NAME("%xer", 101), - REG_DWARFNUM_NAME("%dar", 119), - REG_DWARFNUM_NAME("%dsisr", 118), + REG_DWARFNUM_NAME(msr, 66), + REG_DWARFNUM_NAME(ctr, 109), + REG_DWARFNUM_NAME(link, 108), + REG_DWARFNUM_NAME(xer, 101), + REG_DWARFNUM_NAME(dar, 119), + REG_DWARFNUM_NAME(dsisr, 118), REG_DWARFNUM_END, }; @@ -86,3 +93,12 @@ const char *get_arch_regstr(unsigned int n) return roff->name; return NULL; } + +int regs_query_register_offset(const char *name) +{ + const struct pt_regs_dwarfnum *roff; + for (roff = regdwarfnum_table; roff->name != NULL; roff++) + if (!strcmp(roff->name, name)) + return roff->ptregs_offset; + return -EINVAL; +} diff --git a/tools/perf/arch/powerpc/util/perf_regs.c b/tools/perf/arch/powerpc/util/perf_regs.c new file mode 100644 index 000000000..a3c3e1ce6 --- /dev/null +++ b/tools/perf/arch/powerpc/util/perf_regs.c @@ -0,0 +1,49 @@ +#include "../../perf.h" +#include "../../util/perf_regs.h" + +const struct sample_reg sample_reg_masks[] = { + SMPL_REG(r0, PERF_REG_POWERPC_R0), + SMPL_REG(r1, PERF_REG_POWERPC_R1), + SMPL_REG(r2, PERF_REG_POWERPC_R2), + SMPL_REG(r3, PERF_REG_POWERPC_R3), + SMPL_REG(r4, PERF_REG_POWERPC_R4), + SMPL_REG(r5, PERF_REG_POWERPC_R5), + SMPL_REG(r6, PERF_REG_POWERPC_R6), + SMPL_REG(r7, PERF_REG_POWERPC_R7), + SMPL_REG(r8, PERF_REG_POWERPC_R8), + SMPL_REG(r9, PERF_REG_POWERPC_R9), + SMPL_REG(r10, PERF_REG_POWERPC_R10), + SMPL_REG(r11, PERF_REG_POWERPC_R11), + SMPL_REG(r12, PERF_REG_POWERPC_R12), + SMPL_REG(r13, PERF_REG_POWERPC_R13), + SMPL_REG(r14, PERF_REG_POWERPC_R14), + SMPL_REG(r15, PERF_REG_POWERPC_R15), + SMPL_REG(r16, PERF_REG_POWERPC_R16), + SMPL_REG(r17, PERF_REG_POWERPC_R17), + SMPL_REG(r18, PERF_REG_POWERPC_R18), + SMPL_REG(r19, PERF_REG_POWERPC_R19), + SMPL_REG(r20, PERF_REG_POWERPC_R20), + SMPL_REG(r21, PERF_REG_POWERPC_R21), + SMPL_REG(r22, PERF_REG_POWERPC_R22), + SMPL_REG(r23, PERF_REG_POWERPC_R23), + SMPL_REG(r24, PERF_REG_POWERPC_R24), + SMPL_REG(r25, PERF_REG_POWERPC_R25), + SMPL_REG(r26, PERF_REG_POWERPC_R26), + SMPL_REG(r27, PERF_REG_POWERPC_R27), + SMPL_REG(r28, PERF_REG_POWERPC_R28), + SMPL_REG(r29, PERF_REG_POWERPC_R29), + SMPL_REG(r30, PERF_REG_POWERPC_R30), + SMPL_REG(r31, PERF_REG_POWERPC_R31), + SMPL_REG(nip, PERF_REG_POWERPC_NIP), + SMPL_REG(msr, PERF_REG_POWERPC_MSR), + SMPL_REG(orig_r3, PERF_REG_POWERPC_ORIG_R3), + SMPL_REG(ctr, PERF_REG_POWERPC_CTR), + SMPL_REG(link, PERF_REG_POWERPC_LINK), + SMPL_REG(xer, PERF_REG_POWERPC_XER), + SMPL_REG(ccr, PERF_REG_POWERPC_CCR), + SMPL_REG(softe, PERF_REG_POWERPC_SOFTE), + SMPL_REG(trap, PERF_REG_POWERPC_TRAP), + SMPL_REG(dar, PERF_REG_POWERPC_DAR), + SMPL_REG(dsisr, PERF_REG_POWERPC_DSISR), + SMPL_REG_END +}; diff --git a/tools/perf/arch/powerpc/util/sym-handling.c b/tools/perf/arch/powerpc/util/sym-handling.c index bbc1a5076..c6d0f9173 100644 --- a/tools/perf/arch/powerpc/util/sym-handling.c +++ b/tools/perf/arch/powerpc/util/sym-handling.c @@ -19,12 +19,6 @@ bool elf__needs_adjust_symbols(GElf_Ehdr ehdr) ehdr.e_type == ET_DYN; } -#if defined(_CALL_ELF) && _CALL_ELF == 2 -void arch__elf_sym_adjust(GElf_Sym *sym) -{ - sym->st_value += PPC64_LOCAL_ENTRY_OFFSET(sym->st_other); -} -#endif #endif #if !defined(_CALL_ELF) || _CALL_ELF != 2 @@ -65,18 +59,45 @@ bool arch__prefers_symtab(void) return true; } +#ifdef HAVE_LIBELF_SUPPORT +void arch__sym_update(struct symbol *s, GElf_Sym *sym) +{ + s->arch_sym = sym->st_other; +} +#endif + #define PPC64LE_LEP_OFFSET 8 void arch__fix_tev_from_maps(struct perf_probe_event *pev, - struct probe_trace_event *tev, struct map *map) + struct probe_trace_event *tev, struct map *map, + struct symbol *sym) { + int lep_offset; + /* - * ppc64 ABIv2 local entry point is currently always 2 instructions - * (8 bytes) after the global entry point. + * When probing at a function entry point, we normally always want the + * LEP since that catches calls to the function through both the GEP and + * the LEP. Hence, we would like to probe at an offset of 8 bytes if + * the user only specified the function entry. + * + * However, if the user specifies an offset, we fall back to using the + * GEP since all userspace applications (objdump/readelf) show function + * disassembly with offsets from the GEP. + * + * In addition, we shouldn't specify an offset for kretprobes. */ - if (!pev->uprobes && map->dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS) { - tev->point.address += PPC64LE_LEP_OFFSET; + if (pev->point.offset || pev->point.retprobe || !map || !sym) + return; + + lep_offset = PPC64_LOCAL_ENTRY_OFFSET(sym->arch_sym); + + if (map->dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS) tev->point.offset += PPC64LE_LEP_OFFSET; + else if (lep_offset) { + if (pev->uprobes) + tev->point.address += lep_offset; + else + tev->point.offset += lep_offset; } } #endif diff --git a/tools/perf/arch/powerpc/util/unwind-libunwind.c b/tools/perf/arch/powerpc/util/unwind-libunwind.c new file mode 100644 index 000000000..9e15f92ae --- /dev/null +++ b/tools/perf/arch/powerpc/util/unwind-libunwind.c @@ -0,0 +1,96 @@ +/* + * Copyright 2016 Chandan Kumar, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include <errno.h> +#include <libunwind.h> +#include <asm/perf_regs.h> +#include "../../util/unwind.h" +#include "../../util/debug.h" + +int libunwind__arch_reg_id(int regnum) +{ + switch (regnum) { + case UNW_PPC64_R0: + return PERF_REG_POWERPC_R0; + case UNW_PPC64_R1: + return PERF_REG_POWERPC_R1; + case UNW_PPC64_R2: + return PERF_REG_POWERPC_R2; + case UNW_PPC64_R3: + return PERF_REG_POWERPC_R3; + case UNW_PPC64_R4: + return PERF_REG_POWERPC_R4; + case UNW_PPC64_R5: + return PERF_REG_POWERPC_R5; + case UNW_PPC64_R6: + return PERF_REG_POWERPC_R6; + case UNW_PPC64_R7: + return PERF_REG_POWERPC_R7; + case UNW_PPC64_R8: + return PERF_REG_POWERPC_R8; + case UNW_PPC64_R9: + return PERF_REG_POWERPC_R9; + case UNW_PPC64_R10: + return PERF_REG_POWERPC_R10; + case UNW_PPC64_R11: + return PERF_REG_POWERPC_R11; + case UNW_PPC64_R12: + return PERF_REG_POWERPC_R12; + case UNW_PPC64_R13: + return PERF_REG_POWERPC_R13; + case UNW_PPC64_R14: + return PERF_REG_POWERPC_R14; + case UNW_PPC64_R15: + return PERF_REG_POWERPC_R15; + case UNW_PPC64_R16: + return PERF_REG_POWERPC_R16; + case UNW_PPC64_R17: + return PERF_REG_POWERPC_R17; + case UNW_PPC64_R18: + return PERF_REG_POWERPC_R18; + case UNW_PPC64_R19: + return PERF_REG_POWERPC_R19; + case UNW_PPC64_R20: + return PERF_REG_POWERPC_R20; + case UNW_PPC64_R21: + return PERF_REG_POWERPC_R21; + case UNW_PPC64_R22: + return PERF_REG_POWERPC_R22; + case UNW_PPC64_R23: + return PERF_REG_POWERPC_R23; + case UNW_PPC64_R24: + return PERF_REG_POWERPC_R24; + case UNW_PPC64_R25: + return PERF_REG_POWERPC_R25; + case UNW_PPC64_R26: + return PERF_REG_POWERPC_R26; + case UNW_PPC64_R27: + return PERF_REG_POWERPC_R27; + case UNW_PPC64_R28: + return PERF_REG_POWERPC_R28; + case UNW_PPC64_R29: + return PERF_REG_POWERPC_R29; + case UNW_PPC64_R30: + return PERF_REG_POWERPC_R30; + case UNW_PPC64_R31: + return PERF_REG_POWERPC_R31; + case UNW_PPC64_LR: + return PERF_REG_POWERPC_LINK; + case UNW_PPC64_CTR: + return PERF_REG_POWERPC_CTR; + case UNW_PPC64_XER: + return PERF_REG_POWERPC_XER; + case UNW_PPC64_NIP: + return PERF_REG_POWERPC_NIP; + default: + pr_err("unwind: invalid reg id %d\n", regnum); + return -EINVAL; + } + return -EINVAL; +} |