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07d021a6 JG |
1 | /* HP/UX interface for HP 300's, for GDB when running under Unix. |
2 | Copyright (C) 1986, 1987, 1989, 1991 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GDB. | |
5 | ||
99a7de40 | 6 | This program is free software; you can redistribute it and/or modify |
07d021a6 | 7 | it under the terms of the GNU General Public License as published by |
99a7de40 JG |
8 | the Free Software Foundation; either version 2 of the License, or |
9 | (at your option) any later version. | |
07d021a6 | 10 | |
99a7de40 | 11 | This program is distributed in the hope that it will be useful, |
07d021a6 JG |
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 | |
99a7de40 JG |
17 | along with this program; if not, write to the Free Software |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
07d021a6 JG |
19 | |
20 | #include <stdio.h> | |
21 | #include "defs.h" | |
07d021a6 JG |
22 | #include "frame.h" |
23 | #include "inferior.h" | |
24 | ||
25 | /* Defining this means some system include files define some extra stuff. */ | |
26 | #define WOPR | |
27 | #include <sys/param.h> | |
28 | #include <sys/dir.h> | |
29 | #include <signal.h> | |
30 | #include <sys/user.h> | |
31 | #include <sys/ioctl.h> | |
32 | #include <fcntl.h> | |
33 | ||
34 | #include <sys/ptrace.h> | |
35 | #include <sys/reg.h> | |
36 | #include <sys/trap.h> | |
37 | ||
38 | #include "gdbcore.h" | |
39 | ||
40 | #include <sys/file.h> | |
41 | #include <sys/stat.h> | |
42 | ||
43 | #define INFERIOR_AR0(u) \ | |
44 | ((ptrace \ | |
45 | (PT_RUAREA, inferior_pid, ((char *) &u.u_ar0 - (char *) &u), 0)) \ | |
46 | - KERNEL_U_ADDR) | |
47 | ||
48 | static void | |
49 | fetch_inferior_register (regno, regaddr) | |
50 | register int regno; | |
51 | register unsigned int regaddr; | |
52 | { | |
53 | #ifndef HPUX_VERSION_5 | |
54 | if (regno == PS_REGNUM) | |
55 | { | |
56 | union { int i; short s[2]; } ps_val; | |
57 | int regval; | |
58 | ||
59 | ps_val.i = (ptrace (PT_RUAREA, inferior_pid, regaddr, 0)); | |
60 | regval = ps_val.s[0]; | |
61 | supply_register (regno, ®val); | |
62 | } | |
63 | else | |
64 | #endif /* not HPUX_VERSION_5 */ | |
65 | { | |
66 | char buf[MAX_REGISTER_RAW_SIZE]; | |
67 | register int i; | |
68 | ||
69 | for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int)) | |
70 | { | |
71 | *(int *) &buf[i] = ptrace (PT_RUAREA, inferior_pid, regaddr, 0); | |
72 | regaddr += sizeof (int); | |
73 | } | |
74 | supply_register (regno, buf); | |
75 | } | |
76 | return; | |
77 | } | |
78 | ||
79 | static void | |
80 | store_inferior_register_1 (regno, regaddr, value) | |
81 | int regno; | |
82 | unsigned int regaddr; | |
83 | int value; | |
84 | { | |
85 | errno = 0; | |
86 | ptrace (PT_WUAREA, inferior_pid, regaddr, value); | |
87 | #if 0 | |
88 | /* HP-UX randomly sets errno to non-zero for regno == 25. | |
89 | However, the value is correctly written, so ignore errno. */ | |
90 | if (errno != 0) | |
91 | { | |
92 | char string_buf[64]; | |
93 | ||
94 | sprintf (string_buf, "writing register number %d", regno); | |
95 | perror_with_name (string_buf); | |
96 | } | |
97 | #endif | |
98 | return; | |
99 | } | |
100 | ||
101 | static void | |
102 | store_inferior_register (regno, regaddr) | |
103 | register int regno; | |
104 | register unsigned int regaddr; | |
105 | { | |
106 | #ifndef HPUX_VERSION_5 | |
107 | if (regno == PS_REGNUM) | |
108 | { | |
109 | union { int i; short s[2]; } ps_val; | |
110 | ||
111 | ps_val.i = (ptrace (PT_RUAREA, inferior_pid, regaddr, 0)); | |
112 | ps_val.s[0] = (read_register (regno)); | |
113 | store_inferior_register_1 (regno, regaddr, ps_val.i); | |
114 | } | |
115 | else | |
116 | #endif /* not HPUX_VERSION_5 */ | |
117 | { | |
118 | char buf[MAX_REGISTER_RAW_SIZE]; | |
119 | register int i; | |
120 | extern char registers[]; | |
121 | ||
122 | for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int)) | |
123 | { | |
124 | store_inferior_register_1 | |
125 | (regno, regaddr, | |
126 | (*(int *) ®isters[(REGISTER_BYTE (regno)) + i])); | |
127 | regaddr += sizeof (int); | |
128 | } | |
129 | } | |
130 | return; | |
131 | } | |
132 | ||
133 | void | |
134 | fetch_inferior_registers (regno) | |
135 | int regno; | |
136 | { | |
137 | struct user u; | |
138 | register int regno; | |
139 | register unsigned int ar0_offset; | |
140 | ||
141 | ar0_offset = (INFERIOR_AR0 (u)); | |
142 | if (regno == -1) | |
143 | { | |
144 | for (regno = 0; (regno < FP0_REGNUM); regno++) | |
145 | fetch_inferior_register (regno, (REGISTER_ADDR (ar0_offset, regno))); | |
146 | for (; (regno < NUM_REGS); regno++) | |
147 | fetch_inferior_register (regno, (FP_REGISTER_ADDR (u, regno))); | |
148 | } | |
149 | else | |
150 | fetch_inferior_register (regno, | |
151 | (regno < FP0_REGNUM | |
152 | ? REGISTER_ADDR (ar0_offset, regno) | |
153 | : FP_REGISTER_ADDR (u, regno))); | |
154 | } | |
155 | ||
156 | /* Store our register values back into the inferior. | |
157 | If REGNO is -1, do this for all registers. | |
158 | Otherwise, REGNO specifies which register (so we can save time). */ | |
159 | ||
160 | store_inferior_registers (regno) | |
161 | register int regno; | |
162 | { | |
163 | struct user u; | |
164 | register unsigned int ar0_offset; | |
165 | extern char registers[]; | |
166 | ||
167 | if (regno >= FP0_REGNUM) | |
168 | { | |
169 | store_inferior_register (regno, (FP_REGISTER_ADDR (u, regno))); | |
170 | return; | |
171 | } | |
172 | ||
173 | ar0_offset = (INFERIOR_AR0 (u)); | |
174 | if (regno >= 0) | |
175 | { | |
176 | store_inferior_register (regno, (REGISTER_ADDR (ar0_offset, regno))); | |
177 | return; | |
178 | } | |
179 | ||
180 | for (regno = 0; (regno < FP0_REGNUM); regno++) | |
181 | store_inferior_register (regno, (REGISTER_ADDR (ar0_offset, regno))); | |
182 | for (; (regno < NUM_REGS); regno++) | |
183 | store_inferior_register (regno, (FP_REGISTER_ADDR (u, regno))); | |
184 | return; | |
185 | } | |
186 | ||
187 | \f | |
188 | /* Take the register values out of a core file and store | |
189 | them where `read_register' will find them. */ | |
190 | ||
191 | #ifdef HPUX_VERSION_5 | |
192 | #define e_PS e_regs[PS] | |
193 | #define e_PC e_regs[PC] | |
194 | #endif /* HPUX_VERSION_5 */ | |
195 | ||
196 | void | |
197 | fetch_core_registers (core_reg_sect, core_reg_size, which) | |
198 | char *core_reg_sect; | |
199 | int core_reg_size; | |
200 | int which; | |
201 | { | |
202 | int val, regno; | |
203 | struct user u; | |
204 | struct exception_stack *pes = (struct exception_stack *) core_reg_sect; | |
205 | #define es (*pes) | |
206 | char *buf; | |
207 | ||
208 | if (which == 0) { | |
209 | if (core_reg_size < | |
210 | ((char *) &es.e_offset - (char *) &es.e_regs[R0])) | |
211 | error ("Not enough registers in core file"); | |
212 | for (regno = 0; (regno < PS_REGNUM); regno++) | |
213 | supply_register (regno, &es.e_regs[regno + R0]); | |
214 | val = es.e_PS; | |
215 | supply_register (regno++, &val); | |
216 | supply_register (regno++, &es.e_PC); | |
217 | ||
218 | } else if (which == 2) { | |
219 | ||
220 | /* FIXME: This may not work if the float regs and control regs are | |
221 | discontinuous. */ | |
222 | for (regno = FP0_REGNUM, buf = core_reg_sect; | |
223 | (regno < NUM_REGS); | |
224 | buf += REGISTER_RAW_SIZE (regno), regno++) | |
225 | { | |
226 | supply_register (regno, buf); | |
227 | } | |
228 | } | |
229 | } |