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#ifndef EM_LOONGARCH
18#define EM_LOONGARCH	258 /* LoongArch */
19#endif
20
21/* Define const char * {arch}_register_tbl[] */
22#define DEFINE_DWARF_REGSTR_TABLE
23#include "../arch/x86/include/dwarf-regs-table.h"
24#include "../arch/arm/include/dwarf-regs-table.h"
25#include "../arch/arm64/include/dwarf-regs-table.h"
26#include "../arch/sh/include/dwarf-regs-table.h"
27#include "../arch/powerpc/include/dwarf-regs-table.h"
28#include "../arch/s390/include/dwarf-regs-table.h"
29#include "../arch/sparc/include/dwarf-regs-table.h"
30#include "../arch/xtensa/include/dwarf-regs-table.h"
31#include "../arch/mips/include/dwarf-regs-table.h"
32#include "../arch/loongarch/include/dwarf-regs-table.h"
33
34#define __get_dwarf_regstr(tbl, n) (((n) < ARRAY_SIZE(tbl)) ? (tbl)[(n)] : NULL)
35
36/* Return architecture dependent register string (for kprobe-tracer) */
37const char *get_dwarf_regstr(unsigned int n, unsigned int machine)
38{
39	switch (machine) {
40	case EM_NONE:	/* Generic arch - use host arch */
41		return get_arch_regstr(n);
42	case EM_386:
43		return __get_dwarf_regstr(x86_32_regstr_tbl, n);
44	case EM_X86_64:
45		return __get_dwarf_regstr(x86_64_regstr_tbl, n);
46	case EM_ARM:
47		return __get_dwarf_regstr(arm_regstr_tbl, n);
48	case EM_AARCH64:
49		return __get_dwarf_regstr(aarch64_regstr_tbl, n);
50	case EM_SH:
51		return __get_dwarf_regstr(sh_regstr_tbl, n);
52	case EM_S390:
53		return __get_dwarf_regstr(s390_regstr_tbl, n);
54	case EM_PPC:
55	case EM_PPC64:
56		return __get_dwarf_regstr(powerpc_regstr_tbl, n);
57	case EM_SPARC:
58	case EM_SPARCV9:
59		return __get_dwarf_regstr(sparc_regstr_tbl, n);
60	case EM_XTENSA:
61		return __get_dwarf_regstr(xtensa_regstr_tbl, n);
62	case EM_MIPS:
63		return __get_dwarf_regstr(mips_regstr_tbl, n);
64	case EM_LOONGARCH:
65		return __get_dwarf_regstr(loongarch_regstr_tbl, n);
66	default:
67		pr_err("ELF MACHINE %x is not supported.\n", machine);
68	}
69	return NULL;
70}
71