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