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}