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#include "../arch/mips/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	case EM_MIPS:
58		return __get_dwarf_regstr(mips_regstr_tbl, n);
59	default:
60		pr_err("ELF MACHINE %x is not supported.\n", machine);
61	}
62	return NULL;
63}