1 /* Native-dependent code for PA-RISC HP-UX.
3 Copyright (C) 2004-2015 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/ptrace.h>
26 #include <sys/utsname.h>
27 #include <machine/save_state.h>
30 #include <sys/ttrace.h>
33 #include "hppa-tdep.h"
34 #include "solib-som.h"
35 #include "inf-ptrace.h"
36 #include "inf-ttrace.h"
38 /* Return the offset of register REGNUM within `struct save_state'.
39 The offset returns depends on the flags in the "flags" register and
40 the register size (32-bit or 64-bit). These are taken from
44 hppa_hpux_save_state_offset (struct regcache
*regcache
, int regnum
)
48 if (regnum
== HPPA_FLAGS_REGNUM
)
49 return ssoff (ss_flags
);
51 if (HPPA_R0_REGNUM
< regnum
&& regnum
< HPPA_FP0_REGNUM
)
53 struct gdbarch
*arch
= get_regcache_arch (regcache
);
54 size_t size
= register_size (arch
, HPPA_R1_REGNUM
);
57 gdb_assert (size
== 4 || size
== 8);
59 regcache_cooked_read_unsigned (regcache
, HPPA_FLAGS_REGNUM
, &flags
);
60 if (flags
& SS_WIDEREGS
)
61 offset
= ssoff (ss_wide
) + (8 - size
) + (regnum
- HPPA_R0_REGNUM
) * 8;
63 offset
= ssoff (ss_narrow
) + (regnum
- HPPA_R1_REGNUM
) * 4;
67 struct gdbarch
*arch
= get_regcache_arch (regcache
);
68 size_t size
= register_size (arch
, HPPA_FP0_REGNUM
);
70 gdb_assert (size
== 4 || size
== 8);
71 gdb_assert (regnum
>= HPPA_FP0_REGNUM
);
72 offset
= ssoff(ss_fpblock
) + (regnum
- HPPA_FP0_REGNUM
) * size
;
75 gdb_assert (offset
< sizeof (save_state_t
));
79 /* Just in case a future version of PA-RISC HP-UX won't have ptrace(2)
81 #ifndef PTRACE_TYPE_RET
82 #define PTRACE_TYPE_RET void
86 hppa_hpux_fetch_register (struct regcache
*regcache
, int regnum
)
88 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
89 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
96 pid
= ptid_get_pid (inferior_ptid
);
98 /* This isn't really an address, but ptrace thinks of it as one. */
99 addr
= hppa_hpux_save_state_offset (regcache
, regnum
);
100 size
= register_size (gdbarch
, regnum
);
102 gdb_assert (size
== 4 || size
== 8);
107 lwpid_t lwp
= ptid_get_lwp (inferior_ptid
);
109 if (ttrace (TT_LWP_RUREGS
, pid
, lwp
, addr
, size
, (uintptr_t)buf
) == -1)
110 error (_("Couldn't read register %s (#%d): %s"),
111 gdbarch_register_name (gdbarch
, regnum
),
112 regnum
, safe_strerror (errno
));
118 /* Read the register contents from the inferior a chuck at the time. */
119 for (i
= 0; i
< size
/ sizeof (PTRACE_TYPE_RET
); i
++)
122 buf
[i
] = ptrace (PT_RUREGS
, pid
, (PTRACE_TYPE_ARG3
) addr
, 0, 0);
124 error (_("Couldn't read register %s (#%d): %s"),
125 gdbarch_register_name (gdbarch
, regnum
),
126 regnum
, safe_strerror (errno
));
128 addr
+= sizeof (PTRACE_TYPE_RET
);
133 /* Take care with the "flags" register. It's stored as an `int' in
134 `struct save_state', even for 64-bit code. */
135 if (regnum
== HPPA_FLAGS_REGNUM
&& size
== 8)
138 flags
= extract_unsigned_integer ((gdb_byte
*)buf
, 4, byte_order
);
139 store_unsigned_integer ((gdb_byte
*)buf
, 8, byte_order
, flags
);
142 regcache_raw_supply (regcache
, regnum
, buf
);
146 hppa_hpux_fetch_inferior_registers (struct target_ops
*ops
,
147 struct regcache
*regcache
, int regnum
)
151 regnum
< gdbarch_num_regs (get_regcache_arch (regcache
));
153 hppa_hpux_fetch_register (regcache
, regnum
);
155 hppa_hpux_fetch_register (regcache
, regnum
);
158 /* Store register REGNUM into the inferior. */
161 hppa_hpux_store_register (struct regcache
*regcache
, int regnum
)
163 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
164 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
167 PTRACE_TYPE_RET
*buf
;
170 pid
= ptid_get_pid (inferior_ptid
);
172 /* This isn't really an address, but ptrace thinks of it as one. */
173 addr
= hppa_hpux_save_state_offset (regcache
, regnum
);
174 size
= register_size (gdbarch
, regnum
);
176 gdb_assert (size
== 4 || size
== 8);
179 regcache_raw_collect (regcache
, regnum
, buf
);
181 /* Take care with the "flags" register. It's stored as an `int' in
182 `struct save_state', even for 64-bit code. */
183 if (regnum
== HPPA_FLAGS_REGNUM
&& size
== 8)
186 flags
= extract_unsigned_integer ((gdb_byte
*)buf
, 8, byte_order
);
187 store_unsigned_integer ((gdb_byte
*)buf
, 4, byte_order
, flags
);
193 lwpid_t lwp
= ptid_get_lwp (inferior_ptid
);
195 if (ttrace (TT_LWP_WUREGS
, pid
, lwp
, addr
, size
, (uintptr_t)buf
) == -1)
196 error (_("Couldn't write register %s (#%d): %s"),
197 gdbarch_register_name (gdbarch
, regnum
),
198 regnum
, safe_strerror (errno
));
204 /* Write the register contents into the inferior a chunk at the time. */
205 for (i
= 0; i
< size
/ sizeof (PTRACE_TYPE_RET
); i
++)
208 ptrace (PT_WUREGS
, pid
, (PTRACE_TYPE_ARG3
) addr
, buf
[i
], 0);
210 error (_("Couldn't write register %s (#%d): %s"),
211 gdbarch_register_name (gdbarch
, regnum
),
212 regnum
, safe_strerror (errno
));
214 addr
+= sizeof (PTRACE_TYPE_RET
);
220 /* Store register REGNUM back into the inferior. If REGNUM is -1, do
221 this for all registers (including the floating point registers). */
224 hppa_hpux_store_inferior_registers (struct target_ops
*ops
,
225 struct regcache
*regcache
, int regnum
)
229 regnum
< gdbarch_num_regs (get_regcache_arch (regcache
));
231 hppa_hpux_store_register (regcache
, regnum
);
233 hppa_hpux_store_register (regcache
, regnum
);
236 /* Set hpux_major_release variable to the value retrieved from a call to
240 set_hpux_major_release (void)
246 p
= strchr (x
.release
, '.');
248 hpux_major_release
= atoi (p
+ 1);
253 /* Prevent warning from -Wmissing-prototypes. */
254 void _initialize_hppa_hpux_nat (void);
257 _initialize_hppa_hpux_nat (void)
259 struct target_ops
*t
;
261 set_hpux_major_release ();
264 t
= inf_ttrace_target ();
266 t
= inf_ptrace_target ();
269 t
->to_fetch_registers
= hppa_hpux_fetch_inferior_registers
;
270 t
->to_store_registers
= hppa_hpux_store_inferior_registers
;