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perf tools: Add DWARF register lookup for SH 

Implement get_arch_regstr() for SH so that, given a DWARF register number, the
corresponding symbolic name of that register can be looked up.

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Ian Munsie <imunsie@au.ibm.com>
LKML-Reference: <e55812819ad18c2ceca5651ac7698a2af46180d7.1278774279.git.matt@console-pimps.org>
Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Matt Fleming 2010-07-10 16:10:39 +01:00 committed by Arnaldo Carvalho de Melo
parent 8bd0e1be25
commit 0dd9ac63ce
2 changed files with 59 additions and 0 deletions
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4
tools/perf/arch/sh/Makefile Normal file
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@ -0,0 +1,4 @@
ifndef NO_DWARF
PERF_HAVE_DWARF_REGS := 1
LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/dwarf-regs.o
endif

55
tools/perf/arch/sh/util/dwarf-regs.c Normal file
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@ -0,0 +1,55 @@
/*
* Mapping of DWARF debug register numbers into register names.
*
* Copyright (C) 2010 Matt Fleming <matt@console-pimps.org>
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#include <libio.h>
#include <dwarf-regs.h>
/*
* Generic dwarf analysis helpers
*/
#define SH_MAX_REGS 18
const char *sh_regs_table[SH_MAX_REGS] = {
"r0",
"r1",
"r2",
"r3",
"r4",
"r5",
"r6",
"r7",
"r8",
"r9",
"r10",
"r11",
"r12",
"r13",
"r14",
"r15",
"pc",
"pr",
};
/* Return architecture dependent register string (for kprobe-tracer) */
const char *get_arch_regstr(unsigned int n)
{
return (n <= SH_MAX_REGS) ? sh_regs_table[n] : NULL;
}