Commit | Line | Data |
---|---|---|
c906108c SS |
1 | /* Definitions to make GDB run on an ISI Optimum V (3.05) under 4.3bsd. |
2 | Copyright 1987, 1989, 1992 Free Software Foundation, Inc. | |
3 | ||
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
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. | |
c906108c | 10 | |
c5aa993b JM |
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. | |
c906108c | 15 | |
c5aa993b JM |
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., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
20 | |
21 | #define HOST_BYTE_ORDER BIG_ENDIAN | |
22 | ||
23 | /* This has not been tested on ISI's running BSD 4.2, but it will probably | |
24 | work. */ | |
25 | ||
26 | /* This is the amount to subtract from u.u_ar0 | |
27 | to get the offset in the core file of the register values. */ | |
28 | ||
c5aa993b | 29 | /*#define KERNEL_U_ADDR 0x10800000 */ |
c906108c SS |
30 | #define KERNEL_U_ADDR 0 |
31 | ||
32 | /* expects blockend to be u.u_ar0 */ | |
c5aa993b | 33 | extern int rloc[]; /* Defined in isi-dep.c */ |
c906108c SS |
34 | #define REGISTER_U_ADDR(addr, blockend, regno) \ |
35 | { blockend &= UPAGES*NBPG - 1; \ | |
36 | if (regno < 18) addr = (int)blockend + rloc[regno]*4; \ | |
37 | else if (regno < 26) addr = (int) &((struct user *)0)->u_68881_regs \ | |
38 | + (regno - 18) * 12; \ | |
39 | else if (regno < 29) addr = (int) &((struct user *)0)->u_68881_regs \ | |
40 | + 8 * 12 + (regno - 26) * 4; \ | |
41 | } | |
42 | \f | |
43 | /* Interface definitions for kernel debugger KDB. */ | |
44 | ||
45 | /* Map machine fault codes into signal numbers. | |
46 | First subtract 0, divide by 4, then index in a table. | |
47 | Faults for which the entry in this table is 0 | |
48 | are not handled by KDB; the program's own trap handler | |
49 | gets to handle then. */ | |
50 | ||
51 | #define FAULT_CODE_ORIGIN 0 | |
52 | #define FAULT_CODE_UNITS 4 | |
53 | #define FAULT_TABLE \ | |
54 | { 0, 0, 0, 0, SIGTRAP, 0, 0, 0, \ | |
55 | 0, SIGTRAP, 0, 0, 0, 0, 0, SIGKILL, \ | |
56 | 0, 0, 0, 0, 0, 0, 0, 0, \ | |
57 | SIGILL } | |
58 | ||
59 | /* Start running with a stack stretching from BEG to END. | |
60 | BEG and END should be symbols meaningful to the assembler. | |
61 | This is used only for kdb. */ | |
62 | ||
63 | #define INIT_STACK(beg, end) \ | |
64 | { asm (".globl end"); \ | |
65 | asm ("movl $ end, sp"); \ | |
66 | asm ("clrl fp"); } | |
67 | ||
68 | /* Push the frame pointer register on the stack. */ | |
69 | #define PUSH_FRAME_PTR \ | |
70 | asm ("movel fp, -(sp)"); | |
71 | ||
72 | /* Copy the top-of-stack to the frame pointer register. */ | |
73 | #define POP_FRAME_PTR \ | |
74 | asm ("movl (sp), fp"); | |
75 | ||
76 | /* After KDB is entered by a fault, push all registers | |
77 | that GDB thinks about (all NUM_REGS of them), | |
78 | so that they appear in order of ascending GDB register number. | |
79 | The fault code will be on the stack beyond the last register. */ | |
80 | ||
81 | #define PUSH_REGISTERS \ | |
82 | { asm ("clrw -(sp)"); \ | |
83 | asm ("pea 10(sp)"); \ | |
84 | asm ("movem $ 0xfffe,-(sp)"); } | |
85 | ||
86 | /* Assuming the registers (including processor status) have been | |
87 | pushed on the stack in order of ascending GDB register number, | |
88 | restore them and return to the address in the saved PC register. */ | |
89 | ||
90 | #define POP_REGISTERS \ | |
91 | { asm ("subil $8,28(sp)"); \ | |
92 | asm ("movem (sp),$ 0xffff"); \ | |
93 | asm ("rte"); } |