1 /* Target-dependent code for GNU/Linux on MIPS processors. 2 3 Copyright (C) 2006-2024 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 #ifndef MIPS_LINUX_TDEP_H 21 #define MIPS_LINUX_TDEP_H 22 23 /* Copied from <asm/elf.h>. */ 24 #define ELF_NGREG 45 25 #define ELF_NFPREG 33 26 27 typedef unsigned char mips_elf_greg_t[4]; 28 typedef mips_elf_greg_t mips_elf_gregset_t[ELF_NGREG]; 29 30 typedef unsigned char mips_elf_fpreg_t[8]; 31 typedef mips_elf_fpreg_t mips_elf_fpregset_t[ELF_NFPREG]; 32 33 /* 0 - 31 are integer registers, 32 - 63 are fp registers. */ 34 #define FPR_BASE 32 35 #define PC 64 36 #define CAUSE 65 37 #define BADVADDR 66 38 #define MMHI 67 39 #define MMLO 68 40 #define FPC_CSR 69 41 #define FPC_EIR 70 42 #define DSP_BASE 71 43 #define DSP_CONTROL 77 44 45 #define EF_REG0 6 46 #define EF_REG31 37 47 #define EF_LO 38 48 #define EF_HI 39 49 #define EF_CP0_EPC 40 50 #define EF_CP0_BADVADDR 41 51 #define EF_CP0_STATUS 42 52 #define EF_CP0_CAUSE 43 53 54 #define EF_SIZE 180 55 56 void mips_supply_gregset (struct regcache *, const mips_elf_gregset_t *); 57 void mips_fill_gregset (const struct regcache *, mips_elf_gregset_t *, int); 58 59 /* 64-bit support. */ 60 61 /* Copied from <asm/elf.h>. */ 62 #define MIPS64_ELF_NGREG 45 63 #define MIPS64_ELF_NFPREG 33 64 65 typedef unsigned char mips64_elf_greg_t[8]; 66 typedef mips64_elf_greg_t mips64_elf_gregset_t[MIPS64_ELF_NGREG]; 67 68 typedef unsigned char mips64_elf_fpreg_t[8]; 69 typedef mips64_elf_fpreg_t mips64_elf_fpregset_t[MIPS64_ELF_NFPREG]; 70 71 /* 0 - 31 are integer registers, 32 - 63 are fp registers. */ 72 #define MIPS64_FPR_BASE 32 73 #define MIPS64_PC 64 74 #define MIPS64_CAUSE 65 75 #define MIPS64_BADVADDR 66 76 #define MIPS64_MMHI 67 77 #define MIPS64_MMLO 68 78 #define MIPS64_FPC_CSR 69 79 #define MIPS64_FPC_EIR 70 80 81 #define MIPS64_EF_REG0 0 82 #define MIPS64_EF_REG31 31 83 #define MIPS64_EF_LO 32 84 #define MIPS64_EF_HI 33 85 #define MIPS64_EF_CP0_EPC 34 86 #define MIPS64_EF_CP0_BADVADDR 35 87 #define MIPS64_EF_CP0_STATUS 36 88 #define MIPS64_EF_CP0_CAUSE 37 89 90 #define MIPS64_EF_SIZE 304 91 92 void mips64_supply_gregset (struct regcache *, const mips64_elf_gregset_t *); 93 void mips64_fill_gregset (const struct regcache *, 94 mips64_elf_gregset_t *, int); 95 void mips64_supply_fpregset (struct regcache *, 96 const mips64_elf_fpregset_t *); 97 void mips64_fill_fpregset (const struct regcache *, 98 mips64_elf_fpregset_t *, int); 99 100 enum { 101 /* The Linux kernel stores an error code from any interrupted 102 syscall in a "register" (in $0's save slot). */ 103 MIPS_RESTART_REGNUM = 79 104 }; 105 106 /* Return 1 if MIPS_RESTART_REGNUM is usable. */ 107 108 int mips_linux_restart_reg_p (struct gdbarch *gdbarch); 109 110 /* Target descriptions. */ 111 extern const struct target_desc *tdesc_mips_linux; 112 extern const struct target_desc *tdesc_mips64_linux; 113 extern const struct target_desc *tdesc_mips_dsp_linux; 114 extern const struct target_desc *tdesc_mips64_dsp_linux; 115 116 #endif /* MIPS_LINUX_TDEP_H */ 117