LXR linux/tools/perf/util/dwarf-regs.c

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * dwarf-regs.c : Mapping of DWARF debug register numbers into register names.
   4 *
   5 * Written by: Masami Hiramatsu <mhiramat@kernel.org>
   6 */
   7
   8#include <util.h>
   9#include <debug.h>
  10#include <dwarf-regs.h>
  11#include <elf.h>
  12#include <linux/kernel.h>
  13
  14#ifndef EM_AARCH64
  15#define EM_AARCH64      183  /* ARM 64 bit */
  16#endif
  17
  18/* Define const char * {arch}_register_tbl[] */
  19#define DEFINE_DWARF_REGSTR_TABLE
  20#include "../arch/x86/include/dwarf-regs-table.h"
  21#include "../arch/arm/include/dwarf-regs-table.h"
  22#include "../arch/arm64/include/dwarf-regs-table.h"
  23#include "../arch/sh/include/dwarf-regs-table.h"
  24#include "../arch/powerpc/include/dwarf-regs-table.h"
  25#include "../arch/s390/include/dwarf-regs-table.h"
  26#include "../arch/sparc/include/dwarf-regs-table.h"
  27#include "../arch/xtensa/include/dwarf-regs-table.h"
  28
  29#define __get_dwarf_regstr(tbl, n) (((n) < ARRAY_SIZE(tbl)) ? (tbl)[(n)] : NULL)
  30
  31/* Return architecture dependent register string (for kprobe-tracer) */
  32const char *get_dwarf_regstr(unsigned int n, unsigned int machine)
  33{
  34        switch (machine) {
  35        case EM_NONE:   /* Generic arch - use host arch */
  36                return get_arch_regstr(n);
  37        case EM_386:
  38                return __get_dwarf_regstr(x86_32_regstr_tbl, n);
  39        case EM_X86_64:
  40                return __get_dwarf_regstr(x86_64_regstr_tbl, n);
  41        case EM_ARM:
  42                return __get_dwarf_regstr(arm_regstr_tbl, n);
  43        case EM_AARCH64:
  44                return __get_dwarf_regstr(aarch64_regstr_tbl, n);
  45        case EM_SH:
  46                return __get_dwarf_regstr(sh_regstr_tbl, n);
  47        case EM_S390:
  48                return __get_dwarf_regstr(s390_regstr_tbl, n);
  49        case EM_PPC:
  50        case EM_PPC64:
  51                return __get_dwarf_regstr(powerpc_regstr_tbl, n);
  52        case EM_SPARC:
  53        case EM_SPARCV9:
  54                return __get_dwarf_regstr(sparc_regstr_tbl, n);
  55        case EM_XTENSA:
  56                return __get_dwarf_regstr(xtensa_regstr_tbl, n);
  57        default:
  58                pr_err("ELF MACHINE %x is not supported.\n", machine);
  59        }
  60        return NULL;
  61}
  62