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) */
get_dwarf_regstr(unsigned int n,unsigned int machine)37 const 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
