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c906108c SS |
1 | /* Target definitions for GDB on a Motorola 680x0 running SVR4. |
2 | (Commodore Amiga with amix or Atari TT with ASV) | |
3 | Copyright (C) 1991, 1995 Free Software Foundation, Inc. | |
4 | Written by Fred Fish at Cygnus Support (fnf@cygint) | |
5 | ||
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b JM |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
22 | |
23 | /* Define BPT_VECTOR if it is different than the default. | |
24 | This is the vector number used by traps to indicate a breakpoint. */ | |
25 | ||
26 | #define BPT_VECTOR 0x1 | |
27 | ||
28 | /* How much to decrement the PC after a trap. Depends on kernel. */ | |
29 | ||
c5aa993b | 30 | #define DECR_PC_AFTER_BREAK 0 /* No decrement required */ |
c906108c SS |
31 | |
32 | /* Use the alternate method of determining valid frame chains. */ | |
33 | ||
34 | #define FRAME_CHAIN_VALID(fp,fi) alternate_frame_chain_valid (fp, fi) | |
35 | ||
36 | #include "tm-sysv4.h" | |
37 | #include "m68k/tm-m68k.h" | |
38 | ||
39 | /* Offsets (in target ints) into jmp_buf. Not defined in any system header | |
40 | file, so we have to step through setjmp/longjmp with a debugger and figure | |
41 | them out. As a double check, note that <setjmp> defines _JBLEN as 13, | |
42 | which matches the number of elements we see saved by setjmp(). */ | |
43 | ||
44 | #define JB_ELEMENT_SIZE sizeof(int) /* jmp_buf[_JBLEN] is array of ints */ | |
45 | ||
46 | #define JB_D2 0 | |
47 | #define JB_D3 1 | |
48 | #define JB_D4 2 | |
49 | #define JB_D5 3 | |
50 | #define JB_D6 4 | |
51 | #define JB_D7 5 | |
52 | #define JB_A1 6 | |
53 | #define JB_A2 7 | |
54 | #define JB_A3 8 | |
55 | #define JB_A4 9 | |
56 | #define JB_A5 10 | |
57 | #define JB_A6 11 | |
58 | #define JB_A7 12 | |
59 | ||
c5aa993b | 60 | #define JB_PC JB_A1 /* Setjmp()'s return PC saved in A1 */ |
c906108c SS |
61 | |
62 | /* Figure out where the longjmp will land. Slurp the args out of the stack. | |
63 | We expect the first arg to be a pointer to the jmp_buf structure from which | |
64 | we extract the pc (JB_PC) that we will land at. The pc is copied into ADDR. | |
65 | This routine returns true on success */ | |
66 | ||
67 | #define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR) | |
68 | extern int get_longjmp_target PARAMS ((CORE_ADDR *)); | |
69 | ||
70 | /* Convert a DWARF register number to a gdb REGNUM. */ | |
71 | #define DWARF_REG_TO_REGNUM(num) ((num) < 16 ? (num) : (num)+FP0_REGNUM-16) |