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/tmp/gdb-7.10/gdb/hppanbsd-nat.c
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1 /* Native-dependent code for NetBSD/hppa.
2 
3  Copyright (C) 2008-2015 Free Software Foundation, Inc.
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
9  the Free Software Foundation; either version 3 of the License, or
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
18  along with this program. If not, see <http://www.gnu.org/licenses/>. */
19 
20 #include "defs.h"
21 #include "inferior.h"
22 #include "regcache.h"
23 
24 #include <sys/types.h>
25 #include <sys/ptrace.h>
26 #include <machine/reg.h>
27 
28 #include "hppa-tdep.h"
29 #include "inf-ptrace.h"
30 
31 #include "nbsd-nat.h"
32 
33 static int
35 {
36  return ((regnum >= HPPA_R0_REGNUM && regnum <= HPPA_R31_REGNUM) ||
37  (regnum >= HPPA_SAR_REGNUM && regnum <= HPPA_PCSQ_TAIL_REGNUM) ||
38  regnum == HPPA_IPSW_REGNUM ||
39  (regnum >= HPPA_SR4_REGNUM && regnum <= HPPA_SR4_REGNUM + 5));
40 }
41 
42 static int
44 {
45  return (regnum >= HPPA_FP0_REGNUM && regnum <= HPPA_FP31R_REGNUM);
46 }
47 
48 /* Supply the general-purpose registers stored in GREGS to REGCACHE. */
49 
50 static void
51 hppanbsd_supply_gregset (struct regcache *regcache, const void *gregs)
52 {
53  const char *regs = gregs;
54  const int *r = gregs;
55  int regnum;
56 
57  for (regnum = HPPA_R1_REGNUM; regnum <= HPPA_R31_REGNUM; regnum++)
58  regcache_raw_supply (regcache, regnum, regs + regnum * 4);
59 
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_IPSW_REGNUM, regs);
66  regcache_raw_supply (regcache, HPPA_SR4_REGNUM, regs + 41 * 4);
67  regcache_raw_supply (regcache, HPPA_SR4_REGNUM + 1, regs + 37 * 4);
68  regcache_raw_supply (regcache, HPPA_SR4_REGNUM + 2, regs + 38 * 4);
69  regcache_raw_supply (regcache, HPPA_SR4_REGNUM + 3, regs + 39 * 4);
70  regcache_raw_supply (regcache, HPPA_SR4_REGNUM + 4, regs + 40 * 4);
71 }
72 
73 /* Supply the floating-point registers stored in FPREGS to REGCACHE. */
74 
75 static void
76 hppanbsd_supply_fpregset (struct regcache *regcache, const void *fpregs)
77 {
78  const char *regs = fpregs;
79  int regnum;
80 
81  for (regnum = HPPA_FP0_REGNUM; regnum <= HPPA_FP31R_REGNUM;
82  regnum += 2, regs += 8)
83  {
84  regcache_raw_supply (regcache, regnum, regs);
85  regcache_raw_supply (regcache, regnum + 1, regs + 4);
86  }
87 }
88 
89 /* Collect the general-purpose registers from REGCACHE and store them
90  in GREGS. */
91 
92 static void
94  void *gregs, int regnum)
95 {
96  char *regs = gregs;
97  int *r = gregs;
98  int i;
99 
100  for (i = HPPA_R1_REGNUM; i <= HPPA_R31_REGNUM; i++)
101  {
102  if (regnum == -1 || regnum == i)
103  regcache_raw_collect (regcache, i, regs + i * 4);
104  }
105 
106  if (regnum == -1 || regnum == HPPA_IPSW_REGNUM)
107  regcache_raw_collect (regcache, HPPA_IPSW_REGNUM, regs);
108  if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM)
109  regcache_raw_collect (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 35 * 4);
110  if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM)
111  regcache_raw_collect (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 36 * 4);
112 
113  if (regnum == -1 || regnum == HPPA_SAR_REGNUM)
114  regcache_raw_collect (regcache, HPPA_SAR_REGNUM, regs + 32 * 4);
115  if (regnum == -1 || regnum == HPPA_PCSQ_HEAD_REGNUM)
116  regcache_raw_collect (regcache, HPPA_PCSQ_HEAD_REGNUM, regs + 33 * 4);
117  if (regnum == -1 || regnum == HPPA_PCSQ_TAIL_REGNUM)
118  regcache_raw_collect (regcache, HPPA_PCSQ_TAIL_REGNUM, regs + 34 * 4);
119  if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM)
120  regcache_raw_collect (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 35 * 4);
121  if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM)
122  regcache_raw_collect (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 36 * 4);
123  if (regnum == -1 || regnum == HPPA_IPSW_REGNUM)
124  regcache_raw_collect (regcache, HPPA_IPSW_REGNUM, regs);
125  if (regnum == -1 || regnum == HPPA_SR4_REGNUM)
126  regcache_raw_collect (regcache, HPPA_SR4_REGNUM, regs + 41 * 4);
127  if (regnum == -1 || regnum == HPPA_SR4_REGNUM + 1)
128  regcache_raw_collect (regcache, HPPA_SR4_REGNUM + 1, regs + 37 * 4);
129  if (regnum == -1 || regnum == HPPA_SR4_REGNUM + 2)
130  regcache_raw_collect (regcache, HPPA_SR4_REGNUM + 2, regs + 38 * 4);
131  if (regnum == -1 || regnum == HPPA_SR4_REGNUM + 3)
132  regcache_raw_collect (regcache, HPPA_SR4_REGNUM + 3, regs + 39 * 4);
133  if (regnum == -1 || regnum == HPPA_SR4_REGNUM + 4)
134  regcache_raw_collect (regcache, HPPA_SR4_REGNUM + 4, regs + 40 * 4);
135 }
136 
137 /* Collect the floating-point registers from REGCACHE and store them
138  in FPREGS. */
139 
140 static void
142  void *fpregs, int regnum)
143 {
144  char *regs = fpregs;
145  int i;
146 
147  for (i = HPPA_FP0_REGNUM; i <= HPPA_FP31R_REGNUM; i += 2, regs += 8)
148  {
149  if (regnum == -1 || regnum == i || regnum == i + 1)
150  {
151  regcache_raw_collect (regcache, i, regs);
152  regcache_raw_collect (regcache, i + 1, regs + 4);
153  }
154  }
155 }
156 
157 
158 /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
159  for all registers (including the floating-point registers). */
160 
161 static void
163  struct regcache *regcache, int regnum)
164 
165 {
166  if (regnum == -1 || hppanbsd_gregset_supplies_p (regnum))
167  {
168  struct reg regs;
169 
170  if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid),
171  (PTRACE_TYPE_ARG3) &regs, 0) == -1)
172  perror_with_name (_("Couldn't get registers"));
173 
174  hppanbsd_supply_gregset (regcache, &regs);
175  }
176 
177  if (regnum == -1 || hppanbsd_fpregset_supplies_p (regnum))
178  {
179  struct fpreg fpregs;
180 
181  if (ptrace (PT_GETFPREGS, ptid_get_pid (inferior_ptid),
182  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
183  perror_with_name (_("Couldn't get floating point status"));
184 
185  hppanbsd_supply_fpregset (regcache, &fpregs);
186  }
187 }
188 
189 /* Store register REGNUM back into the inferior. If REGNUM is -1, do
190  this for all registers (including the floating-point registers). */
191 
192 static void
194  struct regcache *regcache, int regnum)
195 {
196  if (regnum == -1 || hppanbsd_gregset_supplies_p (regnum))
197  {
198  struct reg regs;
199 
200  if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid),
201  (PTRACE_TYPE_ARG3) &regs, 0) == -1)
202  perror_with_name (_("Couldn't get registers"));
203 
204  hppanbsd_collect_gregset (regcache, &regs, regnum);
205 
206  if (ptrace (PT_SETREGS, ptid_get_pid (inferior_ptid),
207  (PTRACE_TYPE_ARG3) &regs, 0) == -1)
208  perror_with_name (_("Couldn't write registers"));
209  }
210 
211  if (regnum == -1 || hppanbsd_fpregset_supplies_p (regnum))
212  {
213  struct fpreg fpregs;
214 
215  if (ptrace (PT_GETFPREGS, ptid_get_pid (inferior_ptid),
216  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
217  perror_with_name (_("Couldn't get floating point status"));
218 
219  hppanbsd_collect_fpregset (regcache, &fpregs, regnum);
220 
221  if (ptrace (PT_SETFPREGS, ptid_get_pid (inferior_ptid),
222  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
223  perror_with_name (_("Couldn't write floating point status"));
224  }
225 }
226 
227 
228 /* Provide a prototype to silence -Wmissing-prototypes. */
229 void _initialize_hppanbsd_nat (void);
230 
231 void
233 {
234  struct target_ops *t;
235 
236  /* Add some extra features to the ptrace target. */
237  t = inf_ptrace_target ();
238 
241 
243 
244  add_target (t);
245 }
static int hppanbsd_gregset_supplies_p(int regnum)
Definition: hppanbsd-nat.c:34
void add_target(struct target_ops *t)
Definition: target.c:395
char * nbsd_pid_to_exec_file(struct target_ops *self, int pid)
Definition: nbsd-nat.c:28
static int hppanbsd_fpregset_supplies_p(int regnum)
Definition: hppanbsd-nat.c:43
static void hppanbsd_store_registers(struct target_ops *ops, struct regcache *regcache, int regnum)
Definition: hppanbsd-nat.c:193
static void hppanbsd_collect_fpregset(struct regcache *regcache, void *fpregs, int regnum)
Definition: hppanbsd-nat.c:141
#define _(String)
Definition: gdb_locale.h:40
struct target_ops * inf_ptrace_target(void)
Definition: inf-ptrace.c:668
void _initialize_hppanbsd_nat(void)
Definition: hppanbsd-nat.c:232
PTRACE_TYPE_RET ptrace()
static void hppanbsd_supply_gregset(struct regcache *regcache, const void *gregs)
Definition: hppanbsd-nat.c:51
static void hppanbsd_supply_fpregset(struct regcache *regcache, const void *fpregs)
Definition: hppanbsd-nat.c:76
static void hppanbsd_collect_gregset(const struct regcache *regcache, void *gregs, int regnum)
Definition: hppanbsd-nat.c:93
int regnum
Definition: aarch64-tdep.c:69
char *(* to_pid_to_exec_file)(struct target_ops *, int pid) TARGET_DEFAULT_RETURN(NULL)
Definition: target.h:644
Definition: regdef.h:22
int ptid_get_pid(ptid_t ptid)
Definition: ptid.c:52
void(* to_fetch_registers)(struct target_ops *, struct regcache *, int) TARGET_DEFAULT_IGNORE()
Definition: target.h:472
void void void void void void void void void perror_with_name(const char *string) ATTRIBUTE_NORETURN
Definition: utils.c:979
ptid_t inferior_ptid
Definition: infcmd.c:124
static void hppanbsd_fetch_registers(struct target_ops *ops, struct regcache *regcache, int regnum)
Definition: hppanbsd-nat.c:162
void regcache_raw_supply(struct regcache *regcache, int regnum, const void *buf)
Definition: regcache.c:1041
void regcache_raw_collect(const struct regcache *regcache, int regnum, void *buf)
Definition: regcache.c:1071
#define PTRACE_TYPE_ARG3
Definition: config.h:658
void(* to_store_registers)(struct target_ops *, struct regcache *, int) TARGET_DEFAULT_NORETURN(noprocess())
Definition: target.h:474