Commit | Line | Data |
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32eeb91a | 1 | /* Common target dependent code for the Motorola 68000 series. |
eb2e12d7 | 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001, 2003 |
32eeb91a AS |
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 | ||
8de307e0 AS |
25 | struct frame_info; |
26 | ||
32eeb91a AS |
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, | |
8de307e0 | 37 | M68K_D1_REGNUM = 1, |
32eeb91a AS |
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 | ||
8de307e0 AS |
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 | ||
c481dac7 AS |
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 | ||
eb2e12d7 AS |
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; | |
8de307e0 AS |
80 | |
81 | /* Get info about sigtramp. */ | |
82 | struct m68k_sigtramp_info (*get_sigtramp_info) (struct frame_info *); | |
c481dac7 AS |
83 | |
84 | /* Convention for returning structures. */ | |
85 | enum struct_return struct_return; | |
eb2e12d7 AS |
86 | }; |
87 | ||
32eeb91a | 88 | #endif /* M68K_TDEP_H */ |