| 1 | /* Target-dependent code for GNU/Linux on MIPS processors. |
| 2 | |
| 3 | Copyright (C) 2006-2019 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | /* Copied from <asm/elf.h>. */ |
| 21 | #define ELF_NGREG 45 |
| 22 | #define ELF_NFPREG 33 |
| 23 | |
| 24 | typedef unsigned char mips_elf_greg_t[4]; |
| 25 | typedef mips_elf_greg_t mips_elf_gregset_t[ELF_NGREG]; |
| 26 | |
| 27 | typedef unsigned char mips_elf_fpreg_t[8]; |
| 28 | typedef mips_elf_fpreg_t mips_elf_fpregset_t[ELF_NFPREG]; |
| 29 | |
| 30 | /* 0 - 31 are integer registers, 32 - 63 are fp registers. */ |
| 31 | #define FPR_BASE 32 |
| 32 | #define PC 64 |
| 33 | #define CAUSE 65 |
| 34 | #define BADVADDR 66 |
| 35 | #define MMHI 67 |
| 36 | #define MMLO 68 |
| 37 | #define FPC_CSR 69 |
| 38 | #define FPC_EIR 70 |
| 39 | #define DSP_BASE 71 |
| 40 | #define DSP_CONTROL 77 |
| 41 | |
| 42 | #define EF_REG0 6 |
| 43 | #define EF_REG31 37 |
| 44 | #define EF_LO 38 |
| 45 | #define EF_HI 39 |
| 46 | #define EF_CP0_EPC 40 |
| 47 | #define EF_CP0_BADVADDR 41 |
| 48 | #define EF_CP0_STATUS 42 |
| 49 | #define EF_CP0_CAUSE 43 |
| 50 | |
| 51 | #define EF_SIZE 180 |
| 52 | |
| 53 | void mips_supply_gregset (struct regcache *, const mips_elf_gregset_t *); |
| 54 | void mips_fill_gregset (const struct regcache *, mips_elf_gregset_t *, int); |
| 55 | |
| 56 | /* 64-bit support. */ |
| 57 | |
| 58 | /* Copied from <asm/elf.h>. */ |
| 59 | #define MIPS64_ELF_NGREG 45 |
| 60 | #define MIPS64_ELF_NFPREG 33 |
| 61 | |
| 62 | typedef unsigned char mips64_elf_greg_t[8]; |
| 63 | typedef mips64_elf_greg_t mips64_elf_gregset_t[MIPS64_ELF_NGREG]; |
| 64 | |
| 65 | typedef unsigned char mips64_elf_fpreg_t[8]; |
| 66 | typedef mips64_elf_fpreg_t mips64_elf_fpregset_t[MIPS64_ELF_NFPREG]; |
| 67 | |
| 68 | /* 0 - 31 are integer registers, 32 - 63 are fp registers. */ |
| 69 | #define MIPS64_FPR_BASE 32 |
| 70 | #define MIPS64_PC 64 |
| 71 | #define MIPS64_CAUSE 65 |
| 72 | #define MIPS64_BADVADDR 66 |
| 73 | #define MIPS64_MMHI 67 |
| 74 | #define MIPS64_MMLO 68 |
| 75 | #define MIPS64_FPC_CSR 69 |
| 76 | #define MIPS64_FPC_EIR 70 |
| 77 | |
| 78 | #define MIPS64_EF_REG0 0 |
| 79 | #define MIPS64_EF_REG31 31 |
| 80 | #define MIPS64_EF_LO 32 |
| 81 | #define MIPS64_EF_HI 33 |
| 82 | #define MIPS64_EF_CP0_EPC 34 |
| 83 | #define MIPS64_EF_CP0_BADVADDR 35 |
| 84 | #define MIPS64_EF_CP0_STATUS 36 |
| 85 | #define MIPS64_EF_CP0_CAUSE 37 |
| 86 | |
| 87 | #define MIPS64_EF_SIZE 304 |
| 88 | |
| 89 | void mips64_supply_gregset (struct regcache *, const mips64_elf_gregset_t *); |
| 90 | void mips64_fill_gregset (const struct regcache *, |
| 91 | mips64_elf_gregset_t *, int); |
| 92 | void mips64_supply_fpregset (struct regcache *, |
| 93 | const mips64_elf_fpregset_t *); |
| 94 | void mips64_fill_fpregset (const struct regcache *, |
| 95 | mips64_elf_fpregset_t *, int); |
| 96 | |
| 97 | enum { |
| 98 | /* The Linux kernel stores an error code from any interrupted |
| 99 | syscall in a "register" (in $0's save slot). */ |
| 100 | MIPS_RESTART_REGNUM = 79 |
| 101 | }; |
| 102 | |
| 103 | /* Return 1 if MIPS_RESTART_REGNUM is usable. */ |
| 104 | |
| 105 | int mips_linux_restart_reg_p (struct gdbarch *gdbarch); |
| 106 | |
| 107 | /* Target descriptions. */ |
| 108 | extern struct target_desc *tdesc_mips_linux; |
| 109 | extern struct target_desc *tdesc_mips64_linux; |
| 110 | extern struct target_desc *tdesc_mips_dsp_linux; |
| 111 | extern struct target_desc *tdesc_mips64_dsp_linux; |