gdb/mips-linux-tdep.h

   1 /* Target-dependent code for GNU/Linux on MIPS processors.
   2
   3    Copyright (C) 2006-2020 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 struct target_desc *tdesc_mips_linux;
 112 extern struct target_desc *tdesc_mips64_linux;
 113 extern struct target_desc *tdesc_mips_dsp_linux;
 114 extern struct target_desc *tdesc_mips64_dsp_linux;
 115
 116 #endif /* MIPS_LINUX_TDEP_H */