3213486f2e
This patch add support for DWARF register mappings and libdw registers initialization, which is used by perf callchain analyzing, eg: perf record --call-graph=dwarf <COMMAND> Here is elfutils csky backend patch set: https://sourceware.org/ml/elfutils-devel/2019-q2/msg00007.html Signed-off-by: Mao Han <han_mao@c-sky.com> Signed-off-by: Guo Ren <ren_guo@c-sky.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Arnd Bergmann <arnd@arnd.de>
50 lines
1.6 KiB
C
50 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd.
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// Mapping of DWARF debug register numbers into register names.
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#include <stddef.h>
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#include <dwarf-regs.h>
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#if defined(__CSKYABIV2__)
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#define CSKY_MAX_REGS 73
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const char *csky_dwarf_regs_table[CSKY_MAX_REGS] = {
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/* r0 ~ r8 */
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"%a0", "%a1", "%a2", "%a3", "%regs0", "%regs1", "%regs2", "%regs3",
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/* r9 ~ r15 */
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"%regs4", "%regs5", "%regs6", "%regs7", "%regs8", "%regs9", "%sp",
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"%lr",
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/* r16 ~ r23 */
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"%exregs0", "%exregs1", "%exregs2", "%exregs3", "%exregs4",
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"%exregs5", "%exregs6", "%exregs7",
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/* r24 ~ r31 */
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"%exregs8", "%exregs9", "%exregs10", "%exregs11", "%exregs12",
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"%exregs13", "%exregs14", "%tls",
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"%pc", NULL, NULL, NULL, "%hi", "%lo", NULL, NULL,
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NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
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"%epc",
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};
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#else
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#define CSKY_MAX_REGS 57
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const char *csky_dwarf_regs_table[CSKY_MAX_REGS] = {
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/* r0 ~ r8 */
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"%sp", "%regs9", "%a0", "%a1", "%a2", "%a3", "%regs0", "%regs1",
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/* r9 ~ r15 */
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"%regs2", "%regs3", "%regs4", "%regs5", "%regs6", "%regs7", "%regs8",
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"%lr",
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NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
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"%epc",
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};
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#endif
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const char *get_arch_regstr(unsigned int n)
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{
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return (n < CSKY_MAX_REGS) ? csky_dwarf_regs_table[n] : NULL;
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}
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