From: David Daney <david.daney@xxxxxxxxxx> Hack up the Makefile and add support code for mips unwinding and dwarf-regs. Signed-off-by: David Daney <david.daney@xxxxxxxxxx> Cc: linux-mips@xxxxxxxxxxxxxx Cc: Jiri Olsa <jolsa@xxxxxxxxxx> Cc: linux-kernel@xxxxxxxxxxxxxxx Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> Cc: Paul Mackerras <paulus@xxxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxxxxx> Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxxxxxxxxxx> Patchwork: https://patchwork.linux-mips.org/patch/5249/ Signed-off-by: Ralf Baechle <ralf@xxxxxxxxxxxxxx> --- tools/perf/Makefile | 3 ++ tools/perf/arch/mips/Makefile | 7 +++ tools/perf/arch/mips/include/perf_regs.h | 84 ++++++++++++++++++++++++++++++++ tools/perf/arch/mips/util/dwarf-regs.c | 37 ++++++++++++++ tools/perf/arch/mips/util/unwind.c | 20 ++++++++ 5 files changed, 151 insertions(+) create mode 100644 tools/perf/arch/mips/Makefile create mode 100644 tools/perf/arch/mips/include/perf_regs.h create mode 100644 tools/perf/arch/mips/util/dwarf-regs.c create mode 100644 tools/perf/arch/mips/util/unwind.c diff --git a/tools/perf/Makefile b/tools/perf/Makefile index cb2e586..c2a089a 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -28,6 +28,9 @@ ifeq ($(JOBS),) ifeq ($(JOBS),) JOBS := 1 endif + ifeq ($(ARCH),mips) + LIB_H += arch/mips/include/perf_regs.h + endif endif # diff --git a/tools/perf/arch/mips/Makefile b/tools/perf/arch/mips/Makefile new file mode 100644 index 0000000..fe9b61e --- /dev/null +++ b/tools/perf/arch/mips/Makefile @@ -0,0 +1,7 @@ +ifndef NO_DWARF +PERF_HAVE_DWARF_REGS := 1 +LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/dwarf-regs.o +endif +ifndef NO_LIBUNWIND +LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/unwind.o +endif diff --git a/tools/perf/arch/mips/include/perf_regs.h b/tools/perf/arch/mips/include/perf_regs.h new file mode 100644 index 0000000..a91b904 --- /dev/null +++ b/tools/perf/arch/mips/include/perf_regs.h @@ -0,0 +1,84 @@ +#ifndef ARCH_PERF_REGS_H +#define ARCH_PERF_REGS_H + +#include <stdlib.h> +#include "../../util/types.h" +#include <asm/perf_regs.h> + +#define PERF_REG_IP PERF_REG_MIPS_PC +#define PERF_REG_SP PERF_REG_MIPS_R29 + +#define PERF_REGS_MASK ((1ULL << PERF_REG_MIPS_MAX) - 1) + +static inline const char *perf_reg_name(int id) +{ + switch (id) { + case PERF_REG_MIPS_PC: + return "PC"; + case PERF_REG_MIPS_R1: + return "$1"; + case PERF_REG_MIPS_R2: + return "$2"; + case PERF_REG_MIPS_R3: + return "$3"; + case PERF_REG_MIPS_R4: + return "$4"; + case PERF_REG_MIPS_R5: + return "$5"; + case PERF_REG_MIPS_R6: + return "$6"; + case PERF_REG_MIPS_R7: + return "$7"; + case PERF_REG_MIPS_R8: + return "$8"; + case PERF_REG_MIPS_R9: + return "$9"; + case PERF_REG_MIPS_R10: + return "$10"; + case PERF_REG_MIPS_R11: + return "$11"; + case PERF_REG_MIPS_R12: + return "$12"; + case PERF_REG_MIPS_R13: + return "$13"; + case PERF_REG_MIPS_R14: + return "$14"; + case PERF_REG_MIPS_R15: + return "$15"; + case PERF_REG_MIPS_R16: + return "$16"; + case PERF_REG_MIPS_R17: + return "$17"; + case PERF_REG_MIPS_R18: + return "$18"; + case PERF_REG_MIPS_R19: + return "$19"; + case PERF_REG_MIPS_R20: + return "$20"; + case PERF_REG_MIPS_R21: + return "$21"; + case PERF_REG_MIPS_R22: + return "$22"; + case PERF_REG_MIPS_R23: + return "$23"; + case PERF_REG_MIPS_R24: + return "$24"; + case PERF_REG_MIPS_R25: + return "$25"; + + case PERF_REG_MIPS_R28: + return "$28"; + case PERF_REG_MIPS_R29: + return "$29"; + case PERF_REG_MIPS_R30: + return "$30"; + case PERF_REG_MIPS_R31: + return "$31"; + default: + break; + } + return NULL; +} + + +#endif /* ARCH_PERF_REGS_H */ diff --git a/tools/perf/arch/mips/util/dwarf-regs.c b/tools/perf/arch/mips/util/dwarf-regs.c new file mode 100644 index 0000000..165e017 --- /dev/null +++ b/tools/perf/arch/mips/util/dwarf-regs.c @@ -0,0 +1,37 @@ +/* + * dwarf-regs.c : Mapping of DWARF debug register numbers into register names. + * + * Copyright (C) 2013 Cavium, Inc. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <libio.h> +#include <dwarf-regs.h> + +static const char *mips_gpr_names[32] = { + "$0", "$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", "$9", + "$10", "$11", "$12", "$13", "$14", "$15", "$16", "$17", "$18", "$19", + "$20", "$21", "$22", "$23", "$24", "$25", "$26", "$27", "$28", "$29", + "$30", "$31" +}; + +const char *get_arch_regstr(unsigned int n) +{ + if (n < 32) + return mips_gpr_names[n]; + if (n == 64) + return "hi"; + if (n == 65) + return "lo"; + return NULL; +} diff --git a/tools/perf/arch/mips/util/unwind.c b/tools/perf/arch/mips/util/unwind.c new file mode 100644 index 0000000..612949b --- /dev/null +++ b/tools/perf/arch/mips/util/unwind.c @@ -0,0 +1,20 @@ + +#include <errno.h> +#include <libunwind.h> +#include "perf_regs.h" +#include "../../util/unwind.h" + +int unwind__arch_reg_id(int regnum) +{ + switch (regnum) { + case UNW_MIPS_R1 ... UNW_MIPS_R25: + return regnum - UNW_MIPS_R1 + PERF_REG_MIPS_R1; + case UNW_MIPS_R28 ... UNW_MIPS_R31: + return regnum - UNW_MIPS_R28 + PERF_REG_MIPS_R28; + case UNW_MIPS_PC: + return PERF_REG_MIPS_PC; + default: + pr_err("unwind: invalid reg id %d\n", regnum); + return -EINVAL; + } +} -- 1.9.3
