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1 | /* Parameters for execution on VxWorks 68k's, for GDB, the GNU debugger. |
2 | Copyright (C) 1986, 1987, 1989, 1991 Free Software Foundation, Inc. | |
3 | Contributed by Cygnus Support. | |
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., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
20 | ||
21 | #define GDBINIT_FILENAME ".os68gdbinit" | |
22 | ||
23 | #define DEFAULT_PROMPT "(os68k) " | |
24 | ||
25 | #include "m68k/tm-68k.h" | |
26 | ||
27 | /* We have more complex, useful breakpoints on the target. */ | |
28 | #undef DECR_PC_AFTER_BREAK | |
29 | #define DECR_PC_AFTER_BREAK 0 | |
30 | ||
31 | /* We are guaranteed to have a zero frame pointer at bottom of stack, too. */ | |
32 | #undef FRAME_CHAIN | |
33 | #undef FRAME_CHAIN_VALID | |
34 | ||
35 | /* Takes the current frame-struct pointer and returns the chain-pointer | |
36 | to get to the calling frame. | |
37 | ||
38 | If our current frame pointer is zero, we're at the top; else read out | |
39 | the saved FP from memory pointed to by the current FP. */ | |
40 | ||
41 | #define FRAME_CHAIN(thisframe) ((thisframe)->frame? read_memory_integer ((thisframe)->frame, 4): 0) | |
42 | ||
43 | /* If the chain pointer is zero (either because the saved value fetched | |
44 | by FRAME_CHAIN was zero, or because the current FP was zero so FRAME_CHAIN | |
45 | never fetched anything), we are at the top of the stack. */ | |
46 | ||
47 | #define FRAME_CHAIN_VALID(chain, thisframe) (chain != 0) |