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/loongarch/include/dwarf-regs-table.h"
32
33#define __get_dwarf_regstr(tbl, n) (((n) < ARRAY_SIZE(tbl)) ? (tbl)[(n)] : NULL)
34
35/* Return architecture dependent register string (for kprobe-tracer) */
36const char *get_dwarf_regstr(unsigned int n, unsigned int machine)
37{
38	switch (machine) {
39	case EM_NONE:	/* Generic arch - use host arch */
40		return get_arch_regstr(n);
41	case EM_386:
42		return __get_dwarf_regstr(x86_32_regstr_tbl, n);
43	case EM_X86_64:
44		return __get_dwarf_regstr(x86_64_regstr_tbl, n);
45	case EM_ARM:
46		return __get_dwarf_regstr(arm_regstr_tbl, n);
47	case EM_AARCH64:
48		return __get_dwarf_regstr(aarch64_regstr_tbl, n);
49	case EM_SH:
50		return __get_dwarf_regstr(sh_regstr_tbl, n);
51	case EM_S390:
52		return __get_dwarf_regstr(s390_regstr_tbl, n);
53	case EM_PPC:
54	case EM_PPC64:
55		return __get_dwarf_regstr(powerpc_regstr_tbl, n);
56	case EM_SPARC:
57	case EM_SPARCV9:
58		return __get_dwarf_regstr(sparc_regstr_tbl, n);
59	case EM_XTENSA:
60		return __get_dwarf_regstr(xtensa_regstr_tbl, n);
61	case EM_LOONGARCH:
62		return __get_dwarf_regstr(loongarch_regstr_tbl, n);
63	default:
64		pr_err("ELF MACHINE %x is not supported.\n", machine);
65	}
66	return NULL;
67}
68