1 /* Native-dependent code for OpenBSD/hppa.
3 Copyright (C) 2004-2018 Free Software Foundation, Inc.
5 This file is part of GDB.
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
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
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.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
25 #include <sys/types.h>
26 #include <sys/ptrace.h>
27 #include <machine/reg.h>
29 #include "hppa-tdep.h"
30 #include "inf-ptrace.h"
34 struct hppa_obsd_nat_target final : public obsd_nat_target
36 void fetch_registers (struct regcache *, int) override;
37 void store_registers (struct regcache *, int) override;
40 static hppa_obsd_nat_target the_hppa_obsd_nat_target;
43 hppaobsd_gregset_supplies_p (int regnum)
45 return (regnum >= HPPA_R0_REGNUM && regnum <= HPPA_CR27_REGNUM);
49 hppaobsd_fpregset_supplies_p (int regnum)
51 return (regnum >= HPPA_FP0_REGNUM && regnum <= HPPA_FP31R_REGNUM);
54 /* Supply the general-purpose registers stored in GREGS to REGCACHE. */
57 hppaobsd_supply_gregset (struct regcache *regcache, const void *gregs)
59 gdb_byte zero[4] = { 0 };
60 const char *regs = gregs;
63 regcache_raw_supply (regcache, HPPA_R0_REGNUM, &zero);
64 for (regnum = HPPA_R1_REGNUM; regnum <= HPPA_R31_REGNUM; regnum++)
65 regcache_raw_supply (regcache, regnum, regs + regnum * 4);
67 if (sizeof(struct reg) >= 46 * 4)
69 regcache_raw_supply (regcache, HPPA_IPSW_REGNUM, regs);
70 regcache_raw_supply (regcache, HPPA_SAR_REGNUM, regs + 32 * 4);
71 regcache_raw_supply (regcache, HPPA_PCSQ_HEAD_REGNUM, regs + 33 * 4);
72 regcache_raw_supply (regcache, HPPA_PCSQ_TAIL_REGNUM, regs + 34 * 4);
73 regcache_raw_supply (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 35 * 4);
74 regcache_raw_supply (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 36 * 4);
75 regcache_raw_supply (regcache, HPPA_SR0_REGNUM, regs + 37 * 4);
76 regcache_raw_supply (regcache, HPPA_SR1_REGNUM, regs + 38 * 4);
77 regcache_raw_supply (regcache, HPPA_SR2_REGNUM, regs + 39 * 4);
78 regcache_raw_supply (regcache, HPPA_SR3_REGNUM, regs + 40 * 4);
79 regcache_raw_supply (regcache, HPPA_SR4_REGNUM, regs + 41 * 4);
80 regcache_raw_supply (regcache, HPPA_SR5_REGNUM, regs + 42 * 4);
81 regcache_raw_supply (regcache, HPPA_SR6_REGNUM, regs + 43 * 4);
82 regcache_raw_supply (regcache, HPPA_SR7_REGNUM, regs + 44 * 4);
83 regcache_raw_supply (regcache, HPPA_CR26_REGNUM, regs + 45 * 4);
84 regcache_raw_supply (regcache, HPPA_CR27_REGNUM, regs + 46 * 4);
88 regcache_raw_supply (regcache, HPPA_SAR_REGNUM, regs);
89 regcache_raw_supply (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4);
90 regcache_raw_supply (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4);
94 /* Supply the floating-point registers stored in FPREGS to REGCACHE. */
97 hppaobsd_supply_fpregset (struct regcache *regcache, const void *fpregs)
99 const char *regs = fpregs;
102 for (regnum = HPPA_FP0_REGNUM; regnum <= HPPA_FP31R_REGNUM;
103 regnum += 2, regs += 8)
105 regcache_raw_supply (regcache, regnum, regs);
106 regcache_raw_supply (regcache, regnum + 1, regs + 4);
110 /* Collect the general-purpose registers from REGCACHE and store them
114 hppaobsd_collect_gregset (const struct regcache *regcache,
115 void *gregs, int regnum)
120 for (i = HPPA_R1_REGNUM; i <= HPPA_R31_REGNUM; i++)
122 if (regnum == -1 || regnum == i)
123 regcache_raw_collect (regcache, i, regs + i * 4);
126 if (sizeof(struct reg) >= 46 * 4)
128 if (regnum == -1 || regnum == HPPA_IPSW_REGNUM)
129 regcache_raw_collect (regcache, HPPA_IPSW_REGNUM, regs);
130 if (regnum == -1 || regnum == HPPA_SAR_REGNUM)
131 regcache_raw_collect (regcache, HPPA_SAR_REGNUM, regs + 32 * 4);
132 if (regnum == -1 || regnum == HPPA_PCSQ_HEAD_REGNUM)
133 regcache_raw_collect (regcache, HPPA_PCSQ_HEAD_REGNUM, regs + 33 * 4);
134 if (regnum == -1 || regnum == HPPA_PCSQ_TAIL_REGNUM)
135 regcache_raw_collect (regcache, HPPA_PCSQ_TAIL_REGNUM, regs + 34 * 4);
136 if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM)
137 regcache_raw_collect (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 35 * 4);
138 if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM)
139 regcache_raw_collect (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 36 * 4);
140 if (regnum == -1 || regnum == HPPA_SR0_REGNUM)
141 regcache_raw_collect (regcache, HPPA_SR0_REGNUM, regs + 37 * 4);
142 if (regnum == -1 || regnum == HPPA_SR1_REGNUM)
143 regcache_raw_collect (regcache, HPPA_SR1_REGNUM, regs + 38 * 4);
144 if (regnum == -1 || regnum == HPPA_SR2_REGNUM)
145 regcache_raw_collect (regcache, HPPA_SR2_REGNUM, regs + 39 * 4);
146 if (regnum == -1 || regnum == HPPA_SR3_REGNUM)
147 regcache_raw_collect (regcache, HPPA_SR3_REGNUM, regs + 40 * 4);
148 if (regnum == -1 || regnum == HPPA_SR4_REGNUM)
149 regcache_raw_collect (regcache, HPPA_SR4_REGNUM, regs + 41 * 4);
150 if (regnum == -1 || regnum == HPPA_SR5_REGNUM)
151 regcache_raw_collect (regcache, HPPA_SR5_REGNUM, regs + 42 * 4);
152 if (regnum == -1 || regnum == HPPA_SR6_REGNUM)
153 regcache_raw_collect (regcache, HPPA_SR6_REGNUM, regs + 43 * 4);
154 if (regnum == -1 || regnum == HPPA_SR7_REGNUM)
155 regcache_raw_collect (regcache, HPPA_SR7_REGNUM, regs + 44 * 4);
156 if (regnum == -1 || regnum == HPPA_CR26_REGNUM)
157 regcache_raw_collect (regcache, HPPA_CR26_REGNUM, regs + 45 * 4);
158 if (regnum == -1 || regnum == HPPA_CR27_REGNUM)
159 regcache_raw_collect (regcache, HPPA_CR27_REGNUM, regs + 46 * 4);
163 if (regnum == -1 || regnum == HPPA_SAR_REGNUM)
164 regcache_raw_collect (regcache, HPPA_SAR_REGNUM, regs);
165 if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM)
166 regcache_raw_collect (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4);
167 if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM)
168 regcache_raw_collect (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4);
172 /* Collect the floating-point registers from REGCACHE and store them
176 hppaobsd_collect_fpregset (struct regcache *regcache,
177 void *fpregs, int regnum)
182 for (i = HPPA_FP0_REGNUM; i <= HPPA_FP31R_REGNUM; i += 2, regs += 8)
184 if (regnum == -1 || regnum == i || regnum == i + 1)
186 regcache_raw_collect (regcache, i, regs);
187 regcache_raw_collect (regcache, i + 1, regs + 4);
193 /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
194 for all registers (including the floating-point registers). */
197 hppa_obsd_nat_target::fetch_registers (struct regcache *regcache, int regnum)
199 pid_t pid = ptid_get_pid (regcache_get_ptid (regcache));
201 if (regnum == -1 || hppaobsd_gregset_supplies_p (regnum))
205 if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
206 perror_with_name (_("Couldn't get registers"));
208 hppaobsd_supply_gregset (regcache, ®s);
211 if (regnum == -1 || hppaobsd_fpregset_supplies_p (regnum))
215 if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
216 perror_with_name (_("Couldn't get floating point status"));
218 hppaobsd_supply_fpregset (regcache, &fpregs);
222 /* Store register REGNUM back into the inferior. If REGNUM is -1, do
223 this for all registers (including the floating-point registers). */
226 hppa_obsd_nat_target::store_registers (struct regcache *regcache, int regnum)
228 if (regnum == -1 || hppaobsd_gregset_supplies_p (regnum))
232 if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
233 perror_with_name (_("Couldn't get registers"));
235 hppaobsd_collect_gregset (regcache, ®s, regnum);
237 if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
238 perror_with_name (_("Couldn't write registers"));
241 if (regnum == -1 || hppaobsd_fpregset_supplies_p (regnum))
245 if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
246 perror_with_name (_("Couldn't get floating point status"));
248 hppaobsd_collect_fpregset (regcache, &fpregs, regnum);
250 if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
251 perror_with_name (_("Couldn't write floating point status"));
256 _initialize_hppaobsd_nat (void)
258 add_inf_child_target (&the_hppa_obsd_nat_target);