b5f184fbdb
Map perf APIs (perf_reg_name/get_arch_regstr/unwind__arch_reg_id) with
MIPS specific registers.
[ayan@wavecomp.com: repick this patch for unwinding userstack backtrace
by perf and libunwind on MIPS based CPU.]
[yangtiezhu@loongson.cn: Add sample_reg_masks[] to fix build error,
silence some checkpatch errors and warnings, and also separate the
original patches into two parts (MIPS kernel and perf tools) to merge
easily.]
The original patches:
https://lore.kernel.org/patchwork/patch/1126521/
https://lore.kernel.org/patchwork/patch/1126520/
Committer notes:
Do it as __perf_reg_name() to cope with:
067012974c ("perf tools: Fix arm64 build error with gcc-11")
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Archer Yan <ayan@wavecomp.com>
Cc: David Daney <david.daney@cavium.com>
Cc: Jianlin Lv <Jianlin.Lv@arm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Juxin Gao <gaojuxin@loongson.cn>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Xuefeng Li <lixuefeng@loongson.cn>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@vger.kernel.org
Link: http://lore.kernel.org/lkml/1612409724-3516-3-git-send-email-yangtiezhu@loongson.cn
Signed-off-by: Archer Yan <ayan@wavecomp.com>
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* 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 <stdio.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;
|
|
}
|