]>
Commit | Line | Data |
---|---|---|
c906108c SS |
1 | /* Parameters for execution on a Sony/NEWS, for GDB, the GNU debugger. |
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 | ||
c5aa993b | 23 | #include <sys/param.h> /* For INT_MIN */ |
c906108c SS |
24 | |
25 | #define HAVE_WAIT_STRUCT | |
26 | ||
27 | /* We can't use "isatty" or "fileno" on this machine. This isn't good, | |
28 | but it will have to do. */ | |
29 | #define ISATTY(FP) ((FP) == stdin || (FP) == stdout) | |
30 | ||
31 | /* THis is the amount to subtract from u.u_ar0 | |
32 | to get the offset in the core file of the register values. */ | |
33 | ||
34 | #define KERNEL_U_ADDR UADDR | |
35 | ||
36 | /* The offsets in this macro are from /usr/include/machine/reg.h */ | |
37 | ||
38 | #define REGISTER_U_ADDR(addr, blockend, regno) \ | |
39 | { static char offsets[] = { \ | |
40 | /*d0-d7:*/1,2,3,4,5,6,7,8, \ | |
41 | /*a0-a6:*/9,10,11,12,13,14,15, /*sp:*/-4, /*ps:*/0, /*pc:*/-1, \ | |
42 | /*fp0-fp7:*/19,22,25,28,31,34,37,40, /*fpc:*/16,17,18 }; \ | |
43 | addr = blockend + 4 * offsets[regno]; \ | |
44 | } | |
45 | ||
46 | /* NewsOS 3.3 does not define errno in <errno.h>. */ | |
47 | extern int errno; | |
48 | \f | |
49 | /* Interface definitions for kernel debugger KDB. */ | |
50 | ||
51 | /* Use GNU assembler instead of standard assembler */ | |
52 | #define USE_GAS | |
53 | ||
54 | /* Motorola assembly format */ | |
55 | #ifndef USE_GAS | |
56 | #define MOTOROLA | |
57 | #endif | |
58 | ||
59 | /* Map machine fault codes into signal numbers. | |
60 | First subtract 0, divide by 4, then index in a table. | |
61 | Faults for which the entry in this table is 0 | |
62 | are not handled by KDB; the program's own trap handler | |
63 | gets to handle then. */ | |
64 | ||
65 | #define FAULT_CODE_ORIGIN 0 | |
66 | #define FAULT_CODE_UNITS 4 | |
67 | #define FAULT_TABLE \ | |
68 | { 0, 0, 0, 0, SIGTRAP, 0, 0, 0, \ | |
69 | 0, SIGTRAP, 0, 0, 0, 0, 0, SIGKILL, \ | |
70 | 0, 0, 0, 0, 0, 0, 0, 0, \ | |
71 | SIGILL } | |
72 | ||
73 | /* Start running with a stack stretching from BEG to END. | |
74 | BEG and END should be symbols meaningful to the assembler. | |
75 | This is used only for kdb. */ | |
76 | ||
77 | #ifdef MOTOROLA | |
78 | #define INIT_STACK(beg, end) \ | |
79 | { asm (".globl end"); \ | |
80 | asm ("move.l $ end, sp"); \ | |
81 | asm ("clr.l fp"); } | |
82 | #else | |
83 | #define INIT_STACK(beg, end) \ | |
84 | { asm (".globl end"); \ | |
85 | asm ("movel $ end, sp"); \ | |
86 | asm ("clrl fp"); } | |
87 | #endif | |
88 | ||
89 | /* Push the frame pointer register on the stack. */ | |
90 | #ifdef MOTOROLA | |
91 | #define PUSH_FRAME_PTR \ | |
92 | asm ("move.l fp, -(sp)"); | |
93 | #else | |
94 | #define PUSH_FRAME_PTR \ | |
95 | asm ("movel fp, -(sp)"); | |
96 | #endif | |
97 | ||
98 | /* Copy the top-of-stack to the frame pointer register. */ | |
99 | #ifdef MOTOROLA | |
100 | #define POP_FRAME_PTR \ | |
101 | asm ("move.l (sp), fp"); | |
102 | #else | |
103 | #define POP_FRAME_PTR \ | |
104 | asm ("movl (sp), fp"); | |
105 | #endif | |
106 | ||
107 | /* After KDB is entered by a fault, push all registers | |
108 | that GDB thinks about (all NUM_REGS of them), | |
109 | so that they appear in order of ascending GDB register number. | |
110 | The fault code will be on the stack beyond the last register. */ | |
111 | ||
112 | #ifdef MOTOROLA | |
113 | #define PUSH_REGISTERS \ | |
114 | { asm ("clr.w -(sp)"); \ | |
115 | asm ("pea (10,sp)"); \ | |
116 | asm ("movem $ 0xfffe,-(sp)"); } | |
117 | #else | |
118 | #define PUSH_REGISTERS \ | |
119 | { asm ("clrw -(sp)"); \ | |
120 | asm ("pea 10(sp)"); \ | |
121 | asm ("movem $ 0xfffe,-(sp)"); } | |
122 | #endif | |
123 | ||
124 | /* Assuming the registers (including processor status) have been | |
125 | pushed on the stack in order of ascending GDB register number, | |
126 | restore them and return to the address in the saved PC register. */ | |
127 | ||
128 | #ifdef MOTOROLA | |
129 | #define POP_REGISTERS \ | |
130 | { asm ("subi.l $8,28(sp)"); \ | |
131 | asm ("movem (sp),$ 0xffff"); \ | |
132 | asm ("rte"); } | |
133 | #else | |
134 | #define POP_REGISTERS \ | |
135 | { asm ("subil $8,28(sp)"); \ | |
136 | asm ("movem (sp),$ 0xffff"); \ | |
137 | asm ("rte"); } | |
138 | #endif |