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0e56aeaf MK |
1 | /* Native-dependent code for HP PA-RISC BSD's. |
2 | ||
ecd75fc8 | 3 | Copyright (C) 2004-2014 Free Software Foundation, Inc. |
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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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
0e56aeaf MK |
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 | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
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19 | |
20 | #include "defs.h" | |
21 | #include "inferior.h" | |
22 | #include "regcache.h" | |
57cd0b54 | 23 | #include "target.h" |
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24 | |
25 | #include <sys/types.h> | |
26 | #include <sys/ptrace.h> | |
27 | #include <machine/reg.h> | |
28 | ||
29 | #include "hppa-tdep.h" | |
57cd0b54 | 30 | #include "inf-ptrace.h" |
0e56aeaf MK |
31 | |
32 | static int | |
33 | hppabsd_gregset_supplies_p (int regnum) | |
34 | { | |
cbb6aada | 35 | return (regnum >= HPPA_R0_REGNUM && regnum <= HPPA_CR27_REGNUM); |
0e56aeaf MK |
36 | } |
37 | ||
20776c7d MK |
38 | static int |
39 | hppabsd_fpregset_supplies_p (int regnum) | |
40 | { | |
41 | return (regnum >= HPPA_FP0_REGNUM && regnum <= HPPA_FP31R_REGNUM); | |
42 | } | |
43 | ||
0e56aeaf MK |
44 | /* Supply the general-purpose registers stored in GREGS to REGCACHE. */ |
45 | ||
46 | static void | |
47 | hppabsd_supply_gregset (struct regcache *regcache, const void *gregs) | |
48 | { | |
cbb6aada | 49 | gdb_byte zero[4] = { 0 }; |
0e56aeaf MK |
50 | const char *regs = gregs; |
51 | int regnum; | |
52 | ||
cbb6aada | 53 | regcache_raw_supply (regcache, HPPA_R0_REGNUM, &zero); |
0e56aeaf MK |
54 | for (regnum = HPPA_R1_REGNUM; regnum <= HPPA_R31_REGNUM; regnum++) |
55 | regcache_raw_supply (regcache, regnum, regs + regnum * 4); | |
56 | ||
cbb6aada MK |
57 | if (sizeof(struct reg) >= 46 * 4) |
58 | { | |
59 | regcache_raw_supply (regcache, HPPA_IPSW_REGNUM, regs); | |
60 | regcache_raw_supply (regcache, HPPA_SAR_REGNUM, regs + 32 * 4); | |
61 | regcache_raw_supply (regcache, HPPA_PCSQ_HEAD_REGNUM, regs + 33 * 4); | |
62 | regcache_raw_supply (regcache, HPPA_PCSQ_TAIL_REGNUM, regs + 34 * 4); | |
63 | regcache_raw_supply (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 35 * 4); | |
64 | regcache_raw_supply (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 36 * 4); | |
65 | regcache_raw_supply (regcache, HPPA_SR0_REGNUM, regs + 37 * 4); | |
66 | regcache_raw_supply (regcache, HPPA_SR1_REGNUM, regs + 38 * 4); | |
67 | regcache_raw_supply (regcache, HPPA_SR2_REGNUM, regs + 39 * 4); | |
68 | regcache_raw_supply (regcache, HPPA_SR3_REGNUM, regs + 40 * 4); | |
69 | regcache_raw_supply (regcache, HPPA_SR4_REGNUM, regs + 41 * 4); | |
70 | regcache_raw_supply (regcache, HPPA_SR5_REGNUM, regs + 42 * 4); | |
71 | regcache_raw_supply (regcache, HPPA_SR6_REGNUM, regs + 43 * 4); | |
72 | regcache_raw_supply (regcache, HPPA_SR7_REGNUM, regs + 44 * 4); | |
73 | regcache_raw_supply (regcache, HPPA_CR26_REGNUM, regs + 45 * 4); | |
74 | regcache_raw_supply (regcache, HPPA_CR27_REGNUM, regs + 46 * 4); | |
75 | } | |
76 | else | |
77 | { | |
78 | regcache_raw_supply (regcache, HPPA_SAR_REGNUM, regs); | |
79 | regcache_raw_supply (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4); | |
80 | regcache_raw_supply (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4); | |
81 | } | |
0e56aeaf MK |
82 | } |
83 | ||
20776c7d MK |
84 | /* Supply the floating-point registers stored in FPREGS to REGCACHE. */ |
85 | ||
86 | static void | |
87 | hppabsd_supply_fpregset (struct regcache *regcache, const void *fpregs) | |
88 | { | |
89 | const char *regs = fpregs; | |
90 | int regnum; | |
91 | ||
92 | for (regnum = HPPA_FP0_REGNUM; regnum <= HPPA_FP31R_REGNUM; | |
93 | regnum += 2, regs += 8) | |
94 | { | |
95 | regcache_raw_supply (regcache, regnum, regs); | |
96 | regcache_raw_supply (regcache, regnum + 1, regs + 4); | |
97 | } | |
98 | } | |
99 | ||
0e56aeaf MK |
100 | /* Collect the general-purpose registers from REGCACHE and store them |
101 | in GREGS. */ | |
102 | ||
103 | static void | |
104 | hppabsd_collect_gregset (const struct regcache *regcache, | |
105 | void *gregs, int regnum) | |
106 | { | |
107 | char *regs = gregs; | |
108 | int i; | |
109 | ||
110 | for (i = HPPA_R1_REGNUM; i <= HPPA_R31_REGNUM; i++) | |
111 | { | |
112 | if (regnum == -1 || regnum == i) | |
113 | regcache_raw_collect (regcache, i, regs + i * 4); | |
114 | } | |
115 | ||
cbb6aada MK |
116 | if (sizeof(struct reg) >= 46 * 4) |
117 | { | |
118 | if (regnum == -1 || regnum == HPPA_IPSW_REGNUM) | |
119 | regcache_raw_collect (regcache, HPPA_IPSW_REGNUM, regs); | |
120 | if (regnum == -1 || regnum == HPPA_SAR_REGNUM) | |
121 | regcache_raw_collect (regcache, HPPA_SAR_REGNUM, regs + 32 * 4); | |
122 | if (regnum == -1 || regnum == HPPA_PCSQ_HEAD_REGNUM) | |
123 | regcache_raw_collect (regcache, HPPA_PCSQ_HEAD_REGNUM, regs + 33 * 4); | |
124 | if (regnum == -1 || regnum == HPPA_PCSQ_TAIL_REGNUM) | |
125 | regcache_raw_collect (regcache, HPPA_PCSQ_TAIL_REGNUM, regs + 34 * 4); | |
126 | if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM) | |
127 | regcache_raw_collect (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 35 * 4); | |
128 | if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM) | |
129 | regcache_raw_collect (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 36 * 4); | |
130 | if (regnum == -1 || regnum == HPPA_SR0_REGNUM) | |
131 | regcache_raw_collect (regcache, HPPA_SR0_REGNUM, regs + 37 * 4); | |
132 | if (regnum == -1 || regnum == HPPA_SR1_REGNUM) | |
133 | regcache_raw_collect (regcache, HPPA_SR1_REGNUM, regs + 38 * 4); | |
134 | if (regnum == -1 || regnum == HPPA_SR2_REGNUM) | |
135 | regcache_raw_collect (regcache, HPPA_SR2_REGNUM, regs + 39 * 4); | |
136 | if (regnum == -1 || regnum == HPPA_SR3_REGNUM) | |
137 | regcache_raw_collect (regcache, HPPA_SR3_REGNUM, regs + 40 * 4); | |
138 | if (regnum == -1 || regnum == HPPA_SR4_REGNUM) | |
139 | regcache_raw_collect (regcache, HPPA_SR4_REGNUM, regs + 41 * 4); | |
140 | if (regnum == -1 || regnum == HPPA_SR5_REGNUM) | |
141 | regcache_raw_collect (regcache, HPPA_SR5_REGNUM, regs + 42 * 4); | |
142 | if (regnum == -1 || regnum == HPPA_SR6_REGNUM) | |
143 | regcache_raw_collect (regcache, HPPA_SR6_REGNUM, regs + 43 * 4); | |
144 | if (regnum == -1 || regnum == HPPA_SR7_REGNUM) | |
145 | regcache_raw_collect (regcache, HPPA_SR7_REGNUM, regs + 44 * 4); | |
146 | if (regnum == -1 || regnum == HPPA_CR26_REGNUM) | |
147 | regcache_raw_collect (regcache, HPPA_CR26_REGNUM, regs + 45 * 4); | |
148 | if (regnum == -1 || regnum == HPPA_CR27_REGNUM) | |
149 | regcache_raw_collect (regcache, HPPA_CR27_REGNUM, regs + 46 * 4); | |
150 | } | |
151 | else | |
152 | { | |
153 | if (regnum == -1 || regnum == HPPA_SAR_REGNUM) | |
154 | regcache_raw_collect (regcache, HPPA_SAR_REGNUM, regs); | |
155 | if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM) | |
156 | regcache_raw_collect (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4); | |
157 | if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM) | |
158 | regcache_raw_collect (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4); | |
159 | } | |
0e56aeaf | 160 | } |
20776c7d MK |
161 | |
162 | /* Collect the floating-point registers from REGCACHE and store them | |
163 | in FPREGS. */ | |
164 | ||
165 | static void | |
166 | hppabsd_collect_fpregset (struct regcache *regcache, | |
167 | void *fpregs, int regnum) | |
168 | { | |
169 | char *regs = fpregs; | |
170 | int i; | |
171 | ||
172 | for (i = HPPA_FP0_REGNUM; i <= HPPA_FP31R_REGNUM; i += 2, regs += 8) | |
173 | { | |
174 | if (regnum == -1 || regnum == i || regnum == i + 1) | |
175 | { | |
176 | regcache_raw_collect (regcache, i, regs); | |
177 | regcache_raw_collect (regcache, i + 1, regs + 4); | |
178 | } | |
179 | } | |
180 | } | |
0e56aeaf MK |
181 | \f |
182 | ||
183 | /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this | |
184 | for all registers (including the floating-point registers). */ | |
185 | ||
57cd0b54 | 186 | static void |
28439f5e PA |
187 | hppabsd_fetch_registers (struct target_ops *ops, |
188 | struct regcache *regcache, int regnum) | |
0e56aeaf | 189 | { |
0e56aeaf MK |
190 | if (regnum == -1 || hppabsd_gregset_supplies_p (regnum)) |
191 | { | |
192 | struct reg regs; | |
193 | ||
dfd4cc63 | 194 | if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid), |
9f8e0089 | 195 | (PTRACE_TYPE_ARG3) ®s, 0) == -1) |
e2e0b3e5 | 196 | perror_with_name (_("Couldn't get registers")); |
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197 | |
198 | hppabsd_supply_gregset (regcache, ®s); | |
199 | } | |
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200 | |
201 | if (regnum == -1 || hppabsd_fpregset_supplies_p (regnum)) | |
202 | { | |
203 | struct fpreg fpregs; | |
204 | ||
dfd4cc63 | 205 | if (ptrace (PT_GETFPREGS, ptid_get_pid (inferior_ptid), |
20776c7d MK |
206 | (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) |
207 | perror_with_name (_("Couldn't get floating point status")); | |
208 | ||
56be3814 | 209 | hppabsd_supply_fpregset (regcache, &fpregs); |
20776c7d | 210 | } |
0e56aeaf MK |
211 | } |
212 | ||
213 | /* Store register REGNUM back into the inferior. If REGNUM is -1, do | |
214 | this for all registers (including the floating-point registers). */ | |
215 | ||
57cd0b54 | 216 | static void |
28439f5e PA |
217 | hppabsd_store_registers (struct target_ops *ops, |
218 | struct regcache *regcache, int regnum) | |
0e56aeaf MK |
219 | { |
220 | if (regnum == -1 || hppabsd_gregset_supplies_p (regnum)) | |
221 | { | |
222 | struct reg regs; | |
223 | ||
dfd4cc63 | 224 | if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid), |
9f8e0089 | 225 | (PTRACE_TYPE_ARG3) ®s, 0) == -1) |
e2e0b3e5 | 226 | perror_with_name (_("Couldn't get registers")); |
0e56aeaf | 227 | |
56be3814 | 228 | hppabsd_collect_gregset (regcache, ®s, regnum); |
0e56aeaf | 229 | |
dfd4cc63 | 230 | if (ptrace (PT_SETREGS, ptid_get_pid (inferior_ptid), |
9f8e0089 | 231 | (PTRACE_TYPE_ARG3) ®s, 0) == -1) |
e2e0b3e5 | 232 | perror_with_name (_("Couldn't write registers")); |
0e56aeaf | 233 | } |
20776c7d MK |
234 | |
235 | if (regnum == -1 || hppabsd_fpregset_supplies_p (regnum)) | |
236 | { | |
237 | struct fpreg fpregs; | |
238 | ||
dfd4cc63 | 239 | if (ptrace (PT_GETFPREGS, ptid_get_pid (inferior_ptid), |
20776c7d MK |
240 | (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) |
241 | perror_with_name (_("Couldn't get floating point status")); | |
242 | ||
56be3814 | 243 | hppabsd_collect_fpregset (regcache, &fpregs, regnum); |
20776c7d | 244 | |
dfd4cc63 | 245 | if (ptrace (PT_SETFPREGS, ptid_get_pid (inferior_ptid), |
20776c7d MK |
246 | (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) |
247 | perror_with_name (_("Couldn't write floating point status")); | |
248 | } | |
0e56aeaf | 249 | } |
57cd0b54 MK |
250 | |
251 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
252 | void _initialize_hppabsd_nat (void); | |
253 | ||
254 | void | |
255 | _initialize_hppabsd_nat (void) | |
256 | { | |
257 | struct target_ops *t; | |
258 | ||
259 | /* Add in local overrides. */ | |
260 | t = inf_ptrace_target (); | |
261 | t->to_fetch_registers = hppabsd_fetch_registers; | |
262 | t->to_store_registers = hppabsd_store_registers; | |
263 | add_target (t); | |
264 | } |