| 1 | /* Common target dependent code for the Motorola 68000 series. |
| 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001, 2003 |
| 3 | 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., 59 Temple Place - Suite 330, |
| 20 | Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | #ifndef M68K_TDEP_H |
| 23 | #define M68K_TDEP_H |
| 24 | |
| 25 | struct frame_info; |
| 26 | |
| 27 | /* Register numbers of various important registers. |
| 28 | Note that some of these values are "real" register numbers, |
| 29 | and correspond to the general registers of the machine, |
| 30 | and some are "phony" register numbers which are too large |
| 31 | to be actual register numbers as far as the user is concerned |
| 32 | but do serve to get the desired values when passed to read_register. */ |
| 33 | |
| 34 | enum |
| 35 | { |
| 36 | M68K_D0_REGNUM = 0, |
| 37 | M68K_D1_REGNUM = 1, |
| 38 | M68K_A0_REGNUM = 8, |
| 39 | M68K_A1_REGNUM = 9, |
| 40 | M68K_FP_REGNUM = 14, /* Contains address of executing stack frame */ |
| 41 | M68K_SP_REGNUM = 15, /* Contains address of top of stack */ |
| 42 | M68K_PS_REGNUM = 16, /* Contains processor status */ |
| 43 | M68K_PC_REGNUM = 17, /* Contains program counter */ |
| 44 | M68K_FP0_REGNUM = 18, /* Floating point register 0 */ |
| 45 | M68K_FPC_REGNUM = 26, /* 68881 control register */ |
| 46 | M68K_FPS_REGNUM = 27, /* 68881 status register */ |
| 47 | M68K_FPI_REGNUM = 28 |
| 48 | }; |
| 49 | |
| 50 | #define M68K_NUM_REGS (M68K_FPI_REGNUM + 1) |
| 51 | |
| 52 | /* Size of the largest register. */ |
| 53 | #define M68K_MAX_REGISTER_SIZE 12 |
| 54 | |
| 55 | struct m68k_sigtramp_info |
| 56 | { |
| 57 | /* Address of sigcontext. */ |
| 58 | CORE_ADDR sigcontext_addr; |
| 59 | |
| 60 | /* Offset of registers in `struct sigcontext'. */ |
| 61 | int *sc_reg_offset; |
| 62 | }; |
| 63 | |
| 64 | /* Convention for returning structures. */ |
| 65 | |
| 66 | enum struct_return |
| 67 | { |
| 68 | pcc_struct_return, /* Return "short" structures in memory. */ |
| 69 | reg_struct_return /* Return "short" structures in registers. */ |
| 70 | }; |
| 71 | |
| 72 | /* Target-dependent structure in gdbarch. */ |
| 73 | struct gdbarch_tdep |
| 74 | { |
| 75 | /* Offset to PC value in the jump buffer. If this is negative, |
| 76 | longjmp support will be disabled. */ |
| 77 | int jb_pc; |
| 78 | /* The size of each entry in the jump buffer. */ |
| 79 | size_t jb_elt_size; |
| 80 | |
| 81 | /* Get info about sigtramp. */ |
| 82 | struct m68k_sigtramp_info (*get_sigtramp_info) (struct frame_info *); |
| 83 | |
| 84 | /* Convention for returning structures. */ |
| 85 | enum struct_return struct_return; |
| 86 | }; |
| 87 | |
| 88 | #endif /* M68K_TDEP_H */ |