| 1 | /* Target-dependent header for the MIPS architecture, for GDB, the GNU Debugger. |
| 2 | |
| 3 | Copyright (C) 2002, 2003, 2007 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 2 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, write to the Free Software |
| 19 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 20 | Boston, MA 02110-1301, USA. */ |
| 21 | |
| 22 | #ifndef MIPS_TDEP_H |
| 23 | #define MIPS_TDEP_H |
| 24 | |
| 25 | struct gdbarch; |
| 26 | |
| 27 | /* All the possible MIPS ABIs. */ |
| 28 | enum mips_abi |
| 29 | { |
| 30 | MIPS_ABI_UNKNOWN = 0, |
| 31 | MIPS_ABI_N32, |
| 32 | MIPS_ABI_O32, |
| 33 | MIPS_ABI_N64, |
| 34 | MIPS_ABI_O64, |
| 35 | MIPS_ABI_EABI32, |
| 36 | MIPS_ABI_EABI64, |
| 37 | MIPS_ABI_LAST |
| 38 | }; |
| 39 | |
| 40 | /* Return the MIPS ABI associated with GDBARCH. */ |
| 41 | enum mips_abi mips_abi (struct gdbarch *gdbarch); |
| 42 | |
| 43 | /* Return the MIPS ISA's register size. Just a short cut to the BFD |
| 44 | architecture's word size. */ |
| 45 | extern int mips_isa_regsize (struct gdbarch *gdbarch); |
| 46 | |
| 47 | /* Return the current index for various MIPS registers. */ |
| 48 | struct mips_regnum |
| 49 | { |
| 50 | int pc; |
| 51 | int fp0; |
| 52 | int fp_implementation_revision; |
| 53 | int fp_control_status; |
| 54 | int badvaddr; /* Bad vaddr for addressing exception. */ |
| 55 | int cause; /* Describes last exception. */ |
| 56 | int hi; /* Multiply/divide temp. */ |
| 57 | int lo; /* ... */ |
| 58 | }; |
| 59 | extern const struct mips_regnum *mips_regnum (struct gdbarch *gdbarch); |
| 60 | |
| 61 | /* Register numbers of various important registers. Note that some of |
| 62 | these values are "real" register numbers, and correspond to the |
| 63 | general registers of the machine, and some are "phony" register |
| 64 | numbers which are too large to be actual register numbers as far as |
| 65 | the user is concerned but do serve to get the desired values when |
| 66 | passed to read_register. */ |
| 67 | |
| 68 | enum |
| 69 | { |
| 70 | MIPS_ZERO_REGNUM = 0, /* Read-only register, always 0. */ |
| 71 | MIPS_AT_REGNUM = 1, |
| 72 | MIPS_V0_REGNUM = 2, /* Function integer return value. */ |
| 73 | MIPS_A0_REGNUM = 4, /* Loc of first arg during a subr call */ |
| 74 | MIPS_T9_REGNUM = 25, /* Contains address of callee in PIC. */ |
| 75 | MIPS_SP_REGNUM = 29, |
| 76 | MIPS_RA_REGNUM = 31, |
| 77 | MIPS_PS_REGNUM = 32, /* Contains processor status. */ |
| 78 | MIPS_EMBED_LO_REGNUM = 33, |
| 79 | MIPS_EMBED_HI_REGNUM = 34, |
| 80 | MIPS_EMBED_BADVADDR_REGNUM = 35, |
| 81 | MIPS_EMBED_CAUSE_REGNUM = 36, |
| 82 | MIPS_EMBED_PC_REGNUM = 37, |
| 83 | MIPS_EMBED_FP0_REGNUM = 38, |
| 84 | MIPS_UNUSED_REGNUM = 73, /* Never used, FIXME */ |
| 85 | MIPS_FIRST_EMBED_REGNUM = 74, /* First CP0 register for embedded use. */ |
| 86 | MIPS_PRID_REGNUM = 89, /* Processor ID. */ |
| 87 | MIPS_LAST_EMBED_REGNUM = 89 /* Last one. */ |
| 88 | }; |
| 89 | |
| 90 | /* Defined in mips-tdep.c and used in remote-mips.c */ |
| 91 | extern void deprecated_mips_set_processor_regs_hack (void); |
| 92 | |
| 93 | /* Instruction sizes and other useful constants. */ |
| 94 | enum |
| 95 | { |
| 96 | MIPS_INSN16_SIZE = 2, |
| 97 | MIPS_INSN32_SIZE = 4, |
| 98 | /* The number of floating-point or integer registers. */ |
| 99 | MIPS_NUMREGS = 32 |
| 100 | }; |
| 101 | |
| 102 | /* Single step based on where the current instruction will take us. */ |
| 103 | extern int mips_software_single_step (struct regcache *regcache); |
| 104 | |
| 105 | /* Tell if the program counter value in MEMADDR is in a MIPS16 |
| 106 | function. */ |
| 107 | extern int mips_pc_is_mips16 (bfd_vma memaddr); |
| 108 | |
| 109 | /* Return the currently configured (or set) saved register size. */ |
| 110 | extern unsigned int mips_abi_regsize (struct gdbarch *gdbarch); |
| 111 | |
| 112 | #endif /* MIPS_TDEP_H */ |