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1 | /* Macro definitions for GDB on a Commodore Amiga running SVR4 (amix). |
2 | Copyright (C) 1991, Free Software Foundation, Inc. | |
3 | Written by Fred Fish at Cygnus Support (fnf@cygint) | |
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 | /* All Amiga's (so far) running UNIX have come standard with the floating | |
22 | point coprocessor. */ | |
23 | ||
84d82b1c | 24 | #define HAVE_68881 |
35f5886e | 25 | |
84d82b1c FF |
26 | /* Define BPT_VECTOR if it is different than the default. |
27 | This is the vector number used by traps to indicate a breakpoint. */ | |
35f5886e | 28 | |
84d82b1c | 29 | #define BPT_VECTOR 0x1 |
35f5886e FF |
30 | |
31 | /* How much to decrement the PC after a trap. Depends on kernel. */ | |
32 | ||
33 | #define DECR_PC_AFTER_BREAK 0 /* No decrement required */ | |
34 | ||
84d82b1c | 35 | /* Address of end of stack space. Actually one byte past it. |
35f5886e FF |
36 | This value is typically very OS dependent. |
37 | FIXME: Check to see if SVR4 offers some machine independent way | |
38 | of discovering this value and use it if so, and if we need it. */ | |
39 | ||
40 | /* #define STACK_END_ADDR 0xc0800000 */ | |
41 | ||
84d82b1c | 42 | /* Use the alternate method of determining valid frame chains. */ |
35f5886e | 43 | |
84d82b1c FF |
44 | #define FRAME_CHAIN_VALID_ALTERNATE |
45 | ||
ee1ad69c | 46 | #include "tm-sysv4.h" |
84d82b1c | 47 | #include "tm-68k.h" |
d7eddc51 FF |
48 | |
49 | /* Offsets (in target ints) into jmp_buf. Not defined in any system header | |
50 | file, so we have to step through setjmp/longjmp with a debugger and figure | |
51 | them out. As a double check, note that <setjmp> defines _JBLEN as 13, | |
52 | which matches the number of elements we see saved by setjmp(). */ | |
53 | ||
54 | #define JB_ELEMENT_SIZE sizeof(int) /* jmp_buf[_JBLEN] is array of ints */ | |
55 | ||
56 | #define JB_D2 0 | |
57 | #define JB_D3 1 | |
58 | #define JB_D4 2 | |
59 | #define JB_D5 3 | |
60 | #define JB_D6 4 | |
61 | #define JB_D7 5 | |
62 | #define JB_A1 6 | |
63 | #define JB_A2 7 | |
64 | #define JB_A3 8 | |
65 | #define JB_A4 9 | |
66 | #define JB_A5 10 | |
67 | #define JB_A6 11 | |
68 | #define JB_A7 12 | |
69 | ||
70 | #define JB_PC JB_A1 /* Setjmp()'s return PC saved in A1 */ | |
71 | ||
72 | /* Figure out where the longjmp will land. Slurp the args out of the stack. | |
73 | We expect the first arg to be a pointer to the jmp_buf structure from which | |
74 | we extract the pc (JB_PC) that we will land at. The pc is copied into ADDR. | |
75 | This routine returns true on success */ | |
76 | ||
77 | #define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR) |