Commit 36b372df authored by Ian Rogers's avatar Ian Rogers Committed by Arnaldo Carvalho de Melo
Browse files

perf dwarf-regs: Add RISC-V perf to DWARF register number mapping functions 



These functions allow the generic initial register state code in
unwind-libdw to be used.

Signed-off-by: default avatarIan Rogers <irogers@google.com>
Cc: Aditya Bodkhe <aditya.b1@linux.ibm.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.ibm.com>
Cc: Chun-Tse Shao <ctshao@google.com>
Cc: Dmitriy Vyukov <dvyukov@google.com>
Cc: Dr. David Alan Gilbert <linux@treblig.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Haibo Xu <haibo1.xu@intel.com>
Cc: Howard Chu <howardchu95@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Krzysztof Łopatowski <krzysztof.m.lopatowski@gmail.com>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Mark Wielaard <mark@klomp.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <pjw@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sergei Trofimovich <slyich@gmail.com>
Cc: Shimin Guo <shimin.guo@skydio.com>
Cc: Stephen Brennan <stephen.s.brennan@oracle.com>
Cc: Thomas Falcon <thomas.falcon@intel.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent f0053022

tools/perf/util/dwarf-regs-arch/Build

+1 −0
Original line number Diff line number Diff line
@@ -3,4 +3,5 @@ perf-util-$(CONFIG_LIBDW) += dwarf-regs-arm.o 
perf-util-$(CONFIG_LIBDW) += dwarf-regs-csky.o

perf-util-$(CONFIG_LIBDW) += dwarf-regs-loongarch.o

perf-util-$(CONFIG_LIBDW) += dwarf-regs-powerpc.o

perf-util-$(CONFIG_LIBDW) += dwarf-regs-riscv.o

perf-util-$(CONFIG_LIBDW) += dwarf-regs-x86.o

tools/perf/util/dwarf-regs-arch/dwarf-regs-riscv.c

0 → 100644
+12 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

#include <errno.h>

#include <dwarf-regs.h>

#include "../../../arch/riscv/include/uapi/asm/perf_regs.h"



int __get_dwarf_regnum_for_perf_regnum_riscv(int perf_regnum)

{

	if (perf_regnum < 0 || perf_regnum >= PERF_REG_RISCV_MAX)

		return -ENOENT;



	return perf_regnum;

}

tools/perf/util/dwarf-regs.c

+3 −0
Original line number Diff line number Diff line
@@ -209,6 +209,9 @@ int get_dwarf_regnum_for_perf_regnum(int perf_regnum, unsigned int machine, 
	case EM_PPC64:

		reg = __get_dwarf_regnum_for_perf_regnum_powerpc(perf_regnum);

		break;

	case EM_RISCV:

		reg = __get_dwarf_regnum_for_perf_regnum_riscv(perf_regnum);

		break;

	case EM_LOONGARCH:

		reg = __get_dwarf_regnum_for_perf_regnum_loongarch(perf_regnum);

		break;

tools/perf/util/include/dwarf-regs.h

+1 −0
Original line number Diff line number Diff line
@@ -111,6 +111,7 @@ int __get_dwarf_regnum_for_perf_regnum_arm64(int perf_regnum); 
int __get_dwarf_regnum_for_perf_regnum_csky(int perf_regnum, unsigned int flags);

int __get_dwarf_regnum_for_perf_regnum_loongarch(int perf_regnum);

int __get_dwarf_regnum_for_perf_regnum_powerpc(int perf_regnum);

int __get_dwarf_regnum_for_perf_regnum_riscv(int perf_regnum);



/*

 * get_dwarf_regnum - Returns DWARF regnum from register name

tools/perf/util/unwind-libdw-arch/Build

+0 −1
Original line number Diff line number Diff line 
perf-util-y += unwind-libdw-riscv.o

perf-util-y += unwind-libdw-s390.o