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1 | /* Parameters for hosting on a Hewlett-Packard 9000/300, running bsd. |
2 | Copyright 1986, 1987, 1989, 1991, 1992, 1993 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GDB. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | /* | |
21 | * Configuration file for HP9000/300 series machine running | |
22 | * University of Utah's 4.3bsd (or 4.4BSD) port. This is NOT for HP-UX. | |
23 | * Problems to hpbsd-bugs@cs.utah.edu | |
24 | */ | |
25 | ||
26 | #define HOST_BYTE_ORDER BIG_ENDIAN | |
27 | ||
d2712f02 JK |
28 | /* Avoid "INT_MIN redefined" preprocessor warnings by defining them here. */ |
29 | #include <sys/param.h> | |
5076de82 FF |
30 | |
31 | /* Get rid of any system-imposed stack limit if possible. */ | |
32 | ||
33 | #define SET_STACK_LIMIT_HUGE | |
34 | ||
5076de82 FF |
35 | /* Kernel is a bit tenacious about sharing text segments, disallowing bpts. */ |
36 | #define ONE_PROCESS_WRITETEXT | |
37 | ||
38 | /* psignal's definition in 4.4BSD conflicts with the one in defs.h. | |
39 | But there *is* no psignal definition in 4.3BSD. So we avoid the defs.h | |
40 | version here, and supply our own (matching) one. */ | |
41 | #define PSIGNAL_IN_SIGNAL_H | |
42 | void psignal PARAMS ((unsigned int, const char *)); | |
43 | ||
44 | extern char *strdup PARAMS ((const char *)); | |
45 | \f | |
46 | /* Interface definitions for kernel debugger KDB. */ | |
47 | ||
48 | /* Map machine fault codes into signal numbers. | |
49 | First subtract 0, divide by 4, then index in a table. | |
50 | Faults for which the entry in this table is 0 | |
51 | are not handled by KDB; the program's own trap handler | |
52 | gets to handle then. */ | |
53 | ||
54 | #define FAULT_CODE_ORIGIN 0 | |
55 | #define FAULT_CODE_UNITS 4 | |
56 | #define FAULT_TABLE \ | |
57 | { 0, 0, 0, 0, SIGTRAP, 0, 0, 0, \ | |
58 | 0, SIGTRAP, 0, 0, 0, 0, 0, SIGKILL, \ | |
59 | 0, 0, 0, 0, 0, 0, 0, 0, \ | |
60 | SIGILL } | |
61 | ||
62 | /* Start running with a stack stretching from BEG to END. | |
63 | BEG and END should be symbols meaningful to the assembler. | |
64 | This is used only for kdb. */ | |
65 | ||
66 | #define INIT_STACK(beg, end) \ | |
67 | { asm (".globl end"); \ | |
68 | asm ("movel #end, sp"); \ | |
69 | asm ("movel #0,a6"); } | |
70 | ||
71 | /* Push the frame pointer register on the stack. */ | |
72 | #define PUSH_FRAME_PTR \ | |
73 | asm ("movel a6,sp@-"); | |
74 | ||
75 | /* Copy the top-of-stack to the frame pointer register. */ | |
76 | #define POP_FRAME_PTR \ | |
77 | asm ("movl sp@,a6"); | |
78 | ||
79 | /* After KDB is entered by a fault, push all registers | |
80 | that GDB thinks about (all NUM_REGS of them), | |
81 | so that they appear in order of ascending GDB register number. | |
82 | The fault code will be on the stack beyond the last register. */ | |
83 | ||
84 | #define PUSH_REGISTERS \ | |
85 | { asm ("clrw -(sp)"); \ | |
86 | asm ("pea sp@(10)"); \ | |
87 | asm ("movem #0xfffe,sp@-"); } | |
88 | ||
89 | /* Assuming the registers (including processor status) have been | |
90 | pushed on the stack in order of ascending GDB register number, | |
91 | restore them and return to the address in the saved PC register. */ | |
92 | ||
93 | #define POP_REGISTERS \ | |
94 | { asm ("subil #8,sp@(28)"); \ | |
95 | asm ("movem sp@,#0xffff"); \ | |
96 | asm ("rte"); } |