| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame] | 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 <util.h> |
| 9 | #include <debug.h> |
| 10 | #include <dwarf-regs.h> |
| 11 | #include <elf.h> |
| 12 | #include <linux/kernel.h> |
| 13 | |
| 14 | #ifndef EM_AARCH64 |
| 15 | #define EM_AARCH64 183 /* ARM 64 bit */ |
| 16 | #endif |
| 17 | |
| 18 | /* Define const char * {arch}_register_tbl[] */ |
| 19 | #define DEFINE_DWARF_REGSTR_TABLE |
| 20 | #include "../arch/x86/include/dwarf-regs-table.h" |
| 21 | #include "../arch/arm/include/dwarf-regs-table.h" |
| 22 | #include "../arch/arm64/include/dwarf-regs-table.h" |
| 23 | #include "../arch/sh/include/dwarf-regs-table.h" |
| 24 | #include "../arch/powerpc/include/dwarf-regs-table.h" |
| 25 | #include "../arch/s390/include/dwarf-regs-table.h" |
| 26 | #include "../arch/sparc/include/dwarf-regs-table.h" |
| 27 | #include "../arch/xtensa/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) */ |
| 32 | const 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 | default: |
| 58 | pr_err("ELF MACHINE %x is not supported.\n", machine); |
| 59 | } |
| 60 | return NULL; |
| 61 | } |