perf: ARM64: wire up perf_regs and unwind support

Message ID	1392311193-21214-1-git-send-email-jean.pihet@linaro.org (mailing list archive)
State	New, archived
Headers	show Return-Path: <linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org> From: Jean Pihet <jean.pihet@linaro.org> To: linux-kernel@vger.kernel.org, linaro-kernel@lists.linaro.org, linux-arm-kernel@lists.infradead.org, Arnaldo <acme@ghostprotocols.net>, Ingo Molnar <mingo@kernel.org>, Jiri Olsa <jolsa@redhat.com>, Will Deacon <will.deacon@arm.com> Subject: [PATCH] perf: ARM64: wire up perf_regs and unwind support Date: Thu, 13 Feb 2014 18:06:33 +0100 Message-Id: <1392311193-21214-1-git-send-email-jean.pihet@linaro.org> Cc: Jean Pihet <jean.pihet@linaro.org>, patches@linaro.org Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org

Hi, On 13 February 2014 18:06, Jean Pihet <jean.pihet@linaro.org> wrote: > This patch hooks in the perf_regs and libunwind code for ARM64. > The tools/perf/arch/arm64 is created; it contains the arch specific > code for DWARF unwinding. > > Signed-off-by: Jean Pihet <jean.pihet@linaro.org> > Acked-by: Will Deacon <will.deacon@arm.com> Ping on this patch. Can this one go into the perf tree? Regards, Jean > --- > tools/perf/arch/arm64/Makefile | 7 +++ > tools/perf/arch/arm64/include/perf_regs.h | 88 +++++++++++++++++++++++++++ > tools/perf/arch/arm64/util/dwarf-regs.c | 80 ++++++++++++++++++++++++ > tools/perf/arch/arm64/util/unwind-libunwind.c | 82 +++++++++++++++++++++++++ > tools/perf/config/Makefile | 8 ++- > 5 files changed, 264 insertions(+), 1 deletion(-) > create mode 100644 tools/perf/arch/arm64/Makefile > create mode 100644 tools/perf/arch/arm64/include/perf_regs.h > create mode 100644 tools/perf/arch/arm64/util/dwarf-regs.c > create mode 100644 tools/perf/arch/arm64/util/unwind-libunwind.c > > diff --git a/tools/perf/arch/arm64/Makefile b/tools/perf/arch/arm64/Makefile > new file mode 100644 > index 0000000..67e9b3d > --- /dev/null > +++ b/tools/perf/arch/arm64/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-libunwind.o > +endif > diff --git a/tools/perf/arch/arm64/include/perf_regs.h b/tools/perf/arch/arm64/include/perf_regs.h > new file mode 100644 > index 0000000..2359546 > --- /dev/null > +++ b/tools/perf/arch/arm64/include/perf_regs.h > @@ -0,0 +1,88 @@ > +#ifndef ARCH_PERF_REGS_H > +#define ARCH_PERF_REGS_H > + > +#include <stdlib.h> > +#include "../../util/types.h" > +#include <asm/perf_regs.h> > + > +#define PERF_REGS_MASK ((1ULL << PERF_REG_ARM64_MAX) - 1) > +#define PERF_REG_IP PERF_REG_ARM64_PC > +#define PERF_REG_SP PERF_REG_ARM64_SP > + > +static inline const char *perf_reg_name(int id) > +{ > + switch (id) { > + case PERF_REG_ARM64_X0: > + return "x0"; > + case PERF_REG_ARM64_X1: > + return "x1"; > + case PERF_REG_ARM64_X2: > + return "x2"; > + case PERF_REG_ARM64_X3: > + return "x3"; > + case PERF_REG_ARM64_X4: > + return "x4"; > + case PERF_REG_ARM64_X5: > + return "x5"; > + case PERF_REG_ARM64_X6: > + return "x6"; > + case PERF_REG_ARM64_X7: > + return "x7"; > + case PERF_REG_ARM64_X8: > + return "x8"; > + case PERF_REG_ARM64_X9: > + return "x9"; > + case PERF_REG_ARM64_X10: > + return "x10"; > + case PERF_REG_ARM64_X11: > + return "x11"; > + case PERF_REG_ARM64_X12: > + return "x12"; > + case PERF_REG_ARM64_X13: > + return "x13"; > + case PERF_REG_ARM64_X14: > + return "x14"; > + case PERF_REG_ARM64_X15: > + return "x15"; > + case PERF_REG_ARM64_X16: > + return "x16"; > + case PERF_REG_ARM64_X17: > + return "x17"; > + case PERF_REG_ARM64_X18: > + return "x18"; > + case PERF_REG_ARM64_X19: > + return "x19"; > + case PERF_REG_ARM64_X20: > + return "x20"; > + case PERF_REG_ARM64_X21: > + return "x21"; > + case PERF_REG_ARM64_X22: > + return "x22"; > + case PERF_REG_ARM64_X23: > + return "x23"; > + case PERF_REG_ARM64_X24: > + return "x24"; > + case PERF_REG_ARM64_X25: > + return "x25"; > + case PERF_REG_ARM64_X26: > + return "x26"; > + case PERF_REG_ARM64_X27: > + return "x27"; > + case PERF_REG_ARM64_X28: > + return "x28"; > + case PERF_REG_ARM64_X29: > + return "x29"; > + case PERF_REG_ARM64_SP: > + return "sp"; > + case PERF_REG_ARM64_LR: > + return "lr"; > + case PERF_REG_ARM64_PC: > + return "pc"; > + default: > + return NULL; > + } > + > + return NULL; > +} > + > +#endif /* ARCH_PERF_REGS_H */ > diff --git a/tools/perf/arch/arm64/util/dwarf-regs.c b/tools/perf/arch/arm64/util/dwarf-regs.c > new file mode 100644 > index 0000000..d49efeb > --- /dev/null > +++ b/tools/perf/arch/arm64/util/dwarf-regs.c > @@ -0,0 +1,80 @@ > +/* > + * Mapping of DWARF debug register numbers into register names. > + * > + * Copyright (C) 2010 Will Deacon, ARM Ltd. > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License version 2 as > + * published by the Free Software Foundation. > + */ > + > +#include <stddef.h> > +#include <dwarf-regs.h> > + > +struct pt_regs_dwarfnum { > + const char *name; > + unsigned int dwarfnum; > +}; > + > +#define STR(s) #s > +#define REG_DWARFNUM_NAME(r, num) {.name = r, .dwarfnum = num} > +#define GPR_DWARFNUM_NAME(num) \ > + {.name = STR(%x##num), .dwarfnum = num} > +#define REG_DWARFNUM_END {.name = NULL, .dwarfnum = 0} > + > +/* > + * Reference: > + * http://infocenter.arm.com/help/topic/com.arm.doc.ihi0057b/IHI0057B_aadwarf64.pdf > + */ > +static const struct pt_regs_dwarfnum regdwarfnum_table[] = { > + GPR_DWARFNUM_NAME(0), > + GPR_DWARFNUM_NAME(1), > + GPR_DWARFNUM_NAME(2), > + GPR_DWARFNUM_NAME(3), > + GPR_DWARFNUM_NAME(4), > + GPR_DWARFNUM_NAME(5), > + GPR_DWARFNUM_NAME(6), > + GPR_DWARFNUM_NAME(7), > + GPR_DWARFNUM_NAME(8), > + GPR_DWARFNUM_NAME(9), > + GPR_DWARFNUM_NAME(10), > + GPR_DWARFNUM_NAME(11), > + GPR_DWARFNUM_NAME(12), > + GPR_DWARFNUM_NAME(13), > + GPR_DWARFNUM_NAME(14), > + GPR_DWARFNUM_NAME(15), > + GPR_DWARFNUM_NAME(16), > + GPR_DWARFNUM_NAME(17), > + GPR_DWARFNUM_NAME(18), > + GPR_DWARFNUM_NAME(19), > + GPR_DWARFNUM_NAME(20), > + GPR_DWARFNUM_NAME(21), > + GPR_DWARFNUM_NAME(22), > + GPR_DWARFNUM_NAME(23), > + GPR_DWARFNUM_NAME(24), > + GPR_DWARFNUM_NAME(25), > + GPR_DWARFNUM_NAME(26), > + GPR_DWARFNUM_NAME(27), > + GPR_DWARFNUM_NAME(28), > + GPR_DWARFNUM_NAME(29), > + REG_DWARFNUM_NAME("%lr", 30), > + REG_DWARFNUM_NAME("%sp", 31), > + REG_DWARFNUM_END, > +}; > + > +/** > + * get_arch_regstr() - lookup register name from it's DWARF register number > + * @n: the DWARF register number > + * > + * get_arch_regstr() returns the name of the register in struct > + * regdwarfnum_table from it's DWARF register number. If the register is not > + * found in the table, this returns NULL; > + */ > +const char *get_arch_regstr(unsigned int n) > +{ > + const struct pt_regs_dwarfnum *roff; > + for (roff = regdwarfnum_table; roff->name != NULL; roff++) > + if (roff->dwarfnum == n) > + return roff->name; > + return NULL; > +} > diff --git a/tools/perf/arch/arm64/util/unwind-libunwind.c b/tools/perf/arch/arm64/util/unwind-libunwind.c > new file mode 100644 > index 0000000..436ee43 > --- /dev/null > +++ b/tools/perf/arch/arm64/util/unwind-libunwind.c > @@ -0,0 +1,82 @@ > + > +#include <errno.h> > +#include <libunwind.h> > +#include "perf_regs.h" > +#include "../../util/unwind.h" > + > +int libunwind__arch_reg_id(int regnum) > +{ > + switch (regnum) { > + case UNW_AARCH64_X0: > + return PERF_REG_ARM64_X0; > + case UNW_AARCH64_X1: > + return PERF_REG_ARM64_X1; > + case UNW_AARCH64_X2: > + return PERF_REG_ARM64_X2; > + case UNW_AARCH64_X3: > + return PERF_REG_ARM64_X3; > + case UNW_AARCH64_X4: > + return PERF_REG_ARM64_X4; > + case UNW_AARCH64_X5: > + return PERF_REG_ARM64_X5; > + case UNW_AARCH64_X6: > + return PERF_REG_ARM64_X6; > + case UNW_AARCH64_X7: > + return PERF_REG_ARM64_X7; > + case UNW_AARCH64_X8: > + return PERF_REG_ARM64_X8; > + case UNW_AARCH64_X9: > + return PERF_REG_ARM64_X9; > + case UNW_AARCH64_X10: > + return PERF_REG_ARM64_X10; > + case UNW_AARCH64_X11: > + return PERF_REG_ARM64_X11; > + case UNW_AARCH64_X12: > + return PERF_REG_ARM64_X12; > + case UNW_AARCH64_X13: > + return PERF_REG_ARM64_X13; > + case UNW_AARCH64_X14: > + return PERF_REG_ARM64_X14; > + case UNW_AARCH64_X15: > + return PERF_REG_ARM64_X15; > + case UNW_AARCH64_X16: > + return PERF_REG_ARM64_X16; > + case UNW_AARCH64_X17: > + return PERF_REG_ARM64_X17; > + case UNW_AARCH64_X18: > + return PERF_REG_ARM64_X18; > + case UNW_AARCH64_X19: > + return PERF_REG_ARM64_X19; > + case UNW_AARCH64_X20: > + return PERF_REG_ARM64_X20; > + case UNW_AARCH64_X21: > + return PERF_REG_ARM64_X21; > + case UNW_AARCH64_X22: > + return PERF_REG_ARM64_X22; > + case UNW_AARCH64_X23: > + return PERF_REG_ARM64_X23; > + case UNW_AARCH64_X24: > + return PERF_REG_ARM64_X24; > + case UNW_AARCH64_X25: > + return PERF_REG_ARM64_X25; > + case UNW_AARCH64_X26: > + return PERF_REG_ARM64_X26; > + case UNW_AARCH64_X27: > + return PERF_REG_ARM64_X27; > + case UNW_AARCH64_X28: > + return PERF_REG_ARM64_X28; > + case UNW_AARCH64_X29: > + return PERF_REG_ARM64_X29; > + case UNW_AARCH64_X30: > + return PERF_REG_ARM64_LR; > + case UNW_AARCH64_SP: > + return PERF_REG_ARM64_SP; > + case UNW_AARCH64_PC: > + return PERF_REG_ARM64_PC; > + default: > + pr_err("unwind: invalid reg id %d\n", regnum); > + return -EINVAL; > + } > + > + return -EINVAL; > +} > diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile > index 1686583..2e3a19e 100644 > --- a/tools/perf/config/Makefile > +++ b/tools/perf/config/Makefile > @@ -29,11 +29,17 @@ ifeq ($(ARCH),x86) > endif > NO_PERF_REGS := 0 > endif > + > ifeq ($(ARCH),arm) > NO_PERF_REGS := 0 > LIBUNWIND_LIBS = -lunwind -lunwind-arm > endif > > +ifeq ($(ARCH),arm64) > + NO_PERF_REGS := 0 > + LIBUNWIND_LIBS = -lunwind -lunwind-aarch64 > +endif > + > ifeq ($(LIBUNWIND_LIBS),) > NO_LIBUNWIND := 1 > else > @@ -327,7 +333,7 @@ ifndef NO_LIBUNWIND > msg := $(warning No libunwind found, disabling post unwind support. Please install libunwind-dev[el] >= 1.1); > NO_LIBUNWIND := 1 > else > - ifeq ($(ARCH),arm) > + ifeq ($(ARCH),$(filter $(ARCH),arm arm64)) > $(call feature_check,libunwind-debug-frame) > ifneq ($(feature-libunwind-debug-frame), 1) > msg := $(warning No debug_frame support found in libunwind); > -- > 1.7.11.7 >

diff --git a/tools/perf/arch/arm64/Makefile b/tools/perf/arch/arm64/Makefile new file mode 100644 index 0000000..67e9b3d --- /dev/null +++ b/tools/perf/arch/arm64/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-libunwind.o +endif diff --git a/tools/perf/arch/arm64/include/perf_regs.h b/tools/perf/arch/arm64/include/perf_regs.h new file mode 100644 index 0000000..2359546 --- /dev/null +++ b/tools/perf/arch/arm64/include/perf_regs.h @@ -0,0 +1,88 @@ +#ifndef ARCH_PERF_REGS_H +#define ARCH_PERF_REGS_H + +#include <stdlib.h> +#include "../../util/types.h" +#include <asm/perf_regs.h> + +#define PERF_REGS_MASK ((1ULL << PERF_REG_ARM64_MAX) - 1) +#define PERF_REG_IP PERF_REG_ARM64_PC +#define PERF_REG_SP PERF_REG_ARM64_SP + +static inline const char *perf_reg_name(int id) +{ + switch (id) { + case PERF_REG_ARM64_X0: + return "x0"; + case PERF_REG_ARM64_X1: + return "x1"; + case PERF_REG_ARM64_X2: + return "x2"; + case PERF_REG_ARM64_X3: + return "x3"; + case PERF_REG_ARM64_X4: + return "x4"; + case PERF_REG_ARM64_X5: + return "x5"; + case PERF_REG_ARM64_X6: + return "x6"; + case PERF_REG_ARM64_X7: + return "x7"; + case PERF_REG_ARM64_X8: + return "x8"; + case PERF_REG_ARM64_X9: + return "x9"; + case PERF_REG_ARM64_X10: + return "x10"; + case PERF_REG_ARM64_X11: + return "x11"; + case PERF_REG_ARM64_X12: + return "x12"; + case PERF_REG_ARM64_X13: + return "x13"; + case PERF_REG_ARM64_X14: + return "x14"; + case PERF_REG_ARM64_X15: + return "x15"; + case PERF_REG_ARM64_X16: + return "x16"; + case PERF_REG_ARM64_X17: + return "x17"; + case PERF_REG_ARM64_X18: + return "x18"; + case PERF_REG_ARM64_X19: + return "x19"; + case PERF_REG_ARM64_X20: + return "x20"; + case PERF_REG_ARM64_X21: + return "x21"; + case PERF_REG_ARM64_X22: + return "x22"; + case PERF_REG_ARM64_X23: + return "x23"; + case PERF_REG_ARM64_X24: + return "x24"; + case PERF_REG_ARM64_X25: + return "x25"; + case PERF_REG_ARM64_X26: + return "x26"; + case PERF_REG_ARM64_X27: + return "x27"; + case PERF_REG_ARM64_X28: + return "x28"; + case PERF_REG_ARM64_X29: + return "x29"; + case PERF_REG_ARM64_SP: + return "sp"; + case PERF_REG_ARM64_LR: + return "lr"; + case PERF_REG_ARM64_PC: + return "pc"; + default: + return NULL; + } + + return NULL; +} + +#endif /* ARCH_PERF_REGS_H */ diff --git a/tools/perf/arch/arm64/util/dwarf-regs.c b/tools/perf/arch/arm64/util/dwarf-regs.c new file mode 100644 index 0000000..d49efeb --- /dev/null +++ b/tools/perf/arch/arm64/util/dwarf-regs.c @@ -0,0 +1,80 @@ +/* + * Mapping of DWARF debug register numbers into register names. + * + * Copyright (C) 2010 Will Deacon, ARM Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <stddef.h> +#include <dwarf-regs.h> + +struct pt_regs_dwarfnum { + const char *name; + unsigned int dwarfnum; +}; + +#define STR(s) #s +#define REG_DWARFNUM_NAME(r, num) {.name = r, .dwarfnum = num} +#define GPR_DWARFNUM_NAME(num) \ + {.name = STR(%x##num), .dwarfnum = num} +#define REG_DWARFNUM_END {.name = NULL, .dwarfnum = 0} + +/* + * Reference: + * http://infocenter.arm.com/help/topic/com.arm.doc.ihi0057b/IHI0057B_aadwarf64.pdf + */ +static const struct pt_regs_dwarfnum regdwarfnum_table[] = { + GPR_DWARFNUM_NAME(0), + GPR_DWARFNUM_NAME(1), + GPR_DWARFNUM_NAME(2), + GPR_DWARFNUM_NAME(3), + GPR_DWARFNUM_NAME(4), + GPR_DWARFNUM_NAME(5), + GPR_DWARFNUM_NAME(6), + GPR_DWARFNUM_NAME(7), + GPR_DWARFNUM_NAME(8), + GPR_DWARFNUM_NAME(9), + GPR_DWARFNUM_NAME(10), + GPR_DWARFNUM_NAME(11), + GPR_DWARFNUM_NAME(12), + GPR_DWARFNUM_NAME(13), + GPR_DWARFNUM_NAME(14), + GPR_DWARFNUM_NAME(15), + GPR_DWARFNUM_NAME(16), + GPR_DWARFNUM_NAME(17), + GPR_DWARFNUM_NAME(18), + GPR_DWARFNUM_NAME(19), + GPR_DWARFNUM_NAME(20), + GPR_DWARFNUM_NAME(21), + GPR_DWARFNUM_NAME(22), + GPR_DWARFNUM_NAME(23), + GPR_DWARFNUM_NAME(24), + GPR_DWARFNUM_NAME(25), + GPR_DWARFNUM_NAME(26), + GPR_DWARFNUM_NAME(27), + GPR_DWARFNUM_NAME(28), + GPR_DWARFNUM_NAME(29), + REG_DWARFNUM_NAME("%lr", 30), + REG_DWARFNUM_NAME("%sp", 31), + REG_DWARFNUM_END, +}; + +/** + * get_arch_regstr() - lookup register name from it's DWARF register number + * @n: the DWARF register number + * + * get_arch_regstr() returns the name of the register in struct + * regdwarfnum_table from it's DWARF register number. If the register is not + * found in the table, this returns NULL; + */ +const char *get_arch_regstr(unsigned int n) +{ + const struct pt_regs_dwarfnum *roff; + for (roff = regdwarfnum_table; roff->name != NULL; roff++) + if (roff->dwarfnum == n) + return roff->name; + return NULL; +} diff --git a/tools/perf/arch/arm64/util/unwind-libunwind.c b/tools/perf/arch/arm64/util/unwind-libunwind.c new file mode 100644 index 0000000..436ee43 --- /dev/null +++ b/tools/perf/arch/arm64/util/unwind-libunwind.c @@ -0,0 +1,82 @@ + +#include <errno.h> +#include <libunwind.h> +#include "perf_regs.h" +#include "../../util/unwind.h" + +int libunwind__arch_reg_id(int regnum) +{ + switch (regnum) { + case UNW_AARCH64_X0: + return PERF_REG_ARM64_X0; + case UNW_AARCH64_X1: + return PERF_REG_ARM64_X1; + case UNW_AARCH64_X2: + return PERF_REG_ARM64_X2; + case UNW_AARCH64_X3: + return PERF_REG_ARM64_X3; + case UNW_AARCH64_X4: + return PERF_REG_ARM64_X4; + case UNW_AARCH64_X5: + return PERF_REG_ARM64_X5; + case UNW_AARCH64_X6: + return PERF_REG_ARM64_X6; + case UNW_AARCH64_X7: + return PERF_REG_ARM64_X7; + case UNW_AARCH64_X8: + return PERF_REG_ARM64_X8; + case UNW_AARCH64_X9: + return PERF_REG_ARM64_X9; + case UNW_AARCH64_X10: + return PERF_REG_ARM64_X10; + case UNW_AARCH64_X11: + return PERF_REG_ARM64_X11; + case UNW_AARCH64_X12: + return PERF_REG_ARM64_X12; + case UNW_AARCH64_X13: + return PERF_REG_ARM64_X13; + case UNW_AARCH64_X14: + return PERF_REG_ARM64_X14; + case UNW_AARCH64_X15: + return PERF_REG_ARM64_X15; + case UNW_AARCH64_X16: + return PERF_REG_ARM64_X16; + case UNW_AARCH64_X17: + return PERF_REG_ARM64_X17; + case UNW_AARCH64_X18: + return PERF_REG_ARM64_X18; + case UNW_AARCH64_X19: + return PERF_REG_ARM64_X19; + case UNW_AARCH64_X20: + return PERF_REG_ARM64_X20; + case UNW_AARCH64_X21: + return PERF_REG_ARM64_X21; + case UNW_AARCH64_X22: + return PERF_REG_ARM64_X22; + case UNW_AARCH64_X23: + return PERF_REG_ARM64_X23; + case UNW_AARCH64_X24: + return PERF_REG_ARM64_X24; + case UNW_AARCH64_X25: + return PERF_REG_ARM64_X25; + case UNW_AARCH64_X26: + return PERF_REG_ARM64_X26; + case UNW_AARCH64_X27: + return PERF_REG_ARM64_X27; + case UNW_AARCH64_X28: + return PERF_REG_ARM64_X28; + case UNW_AARCH64_X29: + return PERF_REG_ARM64_X29; + case UNW_AARCH64_X30: + return PERF_REG_ARM64_LR; + case UNW_AARCH64_SP: + return PERF_REG_ARM64_SP; + case UNW_AARCH64_PC: + return PERF_REG_ARM64_PC; + default: + pr_err("unwind: invalid reg id %d\n", regnum); + return -EINVAL; + } + + return -EINVAL; +} diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile index 1686583..2e3a19e 100644 --- a/tools/perf/config/Makefile +++ b/tools/perf/config/Makefile @@ -29,11 +29,17 @@ ifeq ($(ARCH),x86) endif NO_PERF_REGS := 0 endif + ifeq ($(ARCH),arm) NO_PERF_REGS := 0 LIBUNWIND_LIBS = -lunwind -lunwind-arm endif +ifeq ($(ARCH),arm64) + NO_PERF_REGS := 0 + LIBUNWIND_LIBS = -lunwind -lunwind-aarch64 +endif + ifeq ($(LIBUNWIND_LIBS),) NO_LIBUNWIND := 1 else @@ -327,7 +333,7 @@ ifndef NO_LIBUNWIND msg := $(warning No libunwind found, disabling post unwind support. Please install libunwind-dev[el] >= 1.1); NO_LIBUNWIND := 1 else - ifeq ($(ARCH),arm) + ifeq ($(ARCH),$(filter $(ARCH),arm arm64)) $(call feature_check,libunwind-debug-frame) ifneq ($(feature-libunwind-debug-frame), 1) msg := $(warning No debug_frame support found in libunwind);

perf: ARM64: wire up perf_regs and unwind support

Commit Message

Comments

Patch