1 /* Native-dependent code for PA-RISC HP-UX.
3 Copyright (C) 2004, 2005, 2007, 2008, 2009, 2010, 2011
4 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "gdb_assert.h"
27 #include <sys/ptrace.h>
28 #include <sys/utsname.h>
29 #include <machine/save_state.h>
32 #include <sys/ttrace.h>
35 #include "hppa-tdep.h"
36 #include "solib-som.h"
37 #include "inf-ptrace.h"
38 #include "inf-ttrace.h"
40 /* Return the offset of register REGNUM within `struct save_state'.
41 The offset returns depends on the flags in the "flags" register and
42 the register size (32-bit or 64-bit). These are taken from
46 hppa_hpux_save_state_offset (struct regcache
*regcache
, int regnum
)
50 if (regnum
== HPPA_FLAGS_REGNUM
)
51 return ssoff (ss_flags
);
53 if (HPPA_R0_REGNUM
< regnum
&& regnum
< HPPA_FP0_REGNUM
)
55 struct gdbarch
*arch
= get_regcache_arch (regcache
);
56 size_t size
= register_size (arch
, HPPA_R1_REGNUM
);
59 gdb_assert (size
== 4 || size
== 8);
61 regcache_cooked_read_unsigned (regcache
, HPPA_FLAGS_REGNUM
, &flags
);
62 if (flags
& SS_WIDEREGS
)
63 offset
= ssoff (ss_wide
) + (8 - size
) + (regnum
- HPPA_R0_REGNUM
) * 8;
65 offset
= ssoff (ss_narrow
) + (regnum
- HPPA_R1_REGNUM
) * 4;
69 struct gdbarch
*arch
= get_regcache_arch (regcache
);
70 size_t size
= register_size (arch
, HPPA_FP0_REGNUM
);
72 gdb_assert (size
== 4 || size
== 8);
73 gdb_assert (regnum
>= HPPA_FP0_REGNUM
);
74 offset
= ssoff(ss_fpblock
) + (regnum
- HPPA_FP0_REGNUM
) * size
;
77 gdb_assert (offset
< sizeof (save_state_t
));
81 /* Just in case a future version of PA-RISC HP-UX won't have ptrace(2)
83 #ifndef PTRACE_TYPE_RET
84 #define PTRACE_TYPE_RET void
88 hppa_hpux_fetch_register (struct regcache
*regcache
, int regnum
)
90 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
91 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
98 pid
= ptid_get_pid (inferior_ptid
);
100 /* This isn't really an address, but ptrace thinks of it as one. */
101 addr
= hppa_hpux_save_state_offset (regcache
, regnum
);
102 size
= register_size (gdbarch
, regnum
);
104 gdb_assert (size
== 4 || size
== 8);
109 lwpid_t lwp
= ptid_get_lwp (inferior_ptid
);
111 if (ttrace (TT_LWP_RUREGS
, pid
, lwp
, addr
, size
, (uintptr_t)buf
) == -1)
112 error (_("Couldn't read register %s (#%d): %s"),
113 gdbarch_register_name (gdbarch
, regnum
),
114 regnum
, safe_strerror (errno
));
120 /* Read the register contents from the inferior a chuck at the time. */
121 for (i
= 0; i
< size
/ sizeof (PTRACE_TYPE_RET
); i
++)
124 buf
[i
] = ptrace (PT_RUREGS
, pid
, (PTRACE_TYPE_ARG3
) addr
, 0, 0);
126 error (_("Couldn't read register %s (#%d): %s"),
127 gdbarch_register_name (gdbarch
, regnum
),
128 regnum
, safe_strerror (errno
));
130 addr
+= sizeof (PTRACE_TYPE_RET
);
135 /* Take care with the "flags" register. It's stored as an `int' in
136 `struct save_state', even for 64-bit code. */
137 if (regnum
== HPPA_FLAGS_REGNUM
&& size
== 8)
140 flags
= extract_unsigned_integer ((gdb_byte
*)buf
, 4, byte_order
);
141 store_unsigned_integer ((gdb_byte
*)buf
, 8, byte_order
, flags
);
144 regcache_raw_supply (regcache
, regnum
, buf
);
148 hppa_hpux_fetch_inferior_registers (struct target_ops
*ops
,
149 struct regcache
*regcache
, int regnum
)
153 regnum
< gdbarch_num_regs (get_regcache_arch (regcache
));
155 hppa_hpux_fetch_register (regcache
, regnum
);
157 hppa_hpux_fetch_register (regcache
, regnum
);
160 /* Store register REGNUM into the inferior. */
163 hppa_hpux_store_register (struct regcache
*regcache
, int regnum
)
165 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
166 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
169 PTRACE_TYPE_RET
*buf
;
172 pid
= ptid_get_pid (inferior_ptid
);
174 /* This isn't really an address, but ptrace thinks of it as one. */
175 addr
= hppa_hpux_save_state_offset (regcache
, regnum
);
176 size
= register_size (gdbarch
, regnum
);
178 gdb_assert (size
== 4 || size
== 8);
181 regcache_raw_collect (regcache
, regnum
, buf
);
183 /* Take care with the "flags" register. It's stored as an `int' in
184 `struct save_state', even for 64-bit code. */
185 if (regnum
== HPPA_FLAGS_REGNUM
&& size
== 8)
188 flags
= extract_unsigned_integer ((gdb_byte
*)buf
, 8, byte_order
);
189 store_unsigned_integer ((gdb_byte
*)buf
, 4, byte_order
, flags
);
195 lwpid_t lwp
= ptid_get_lwp (inferior_ptid
);
197 if (ttrace (TT_LWP_WUREGS
, pid
, lwp
, addr
, size
, (uintptr_t)buf
) == -1)
198 error (_("Couldn't write register %s (#%d): %s"),
199 gdbarch_register_name (gdbarch
, regnum
),
200 regnum
, safe_strerror (errno
));
206 /* Write the register contents into the inferior a chunk at the time. */
207 for (i
= 0; i
< size
/ sizeof (PTRACE_TYPE_RET
); i
++)
210 ptrace (PT_WUREGS
, pid
, (PTRACE_TYPE_ARG3
) addr
, buf
[i
], 0);
212 error (_("Couldn't write register %s (#%d): %s"),
213 gdbarch_register_name (gdbarch
, regnum
),
214 regnum
, safe_strerror (errno
));
216 addr
+= sizeof (PTRACE_TYPE_RET
);
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_hpux_store_inferior_registers (struct target_ops
*ops
,
227 struct regcache
*regcache
, int regnum
)
231 regnum
< gdbarch_num_regs (get_regcache_arch (regcache
));
233 hppa_hpux_store_register (regcache
, regnum
);
235 hppa_hpux_store_register (regcache
, regnum
);
238 /* Set hpux_major_release variable to the value retrieved from a call to
242 set_hpux_major_release (void)
248 p
= strchr (x
.release
, '.');
250 hpux_major_release
= atoi (p
+ 1);
255 /* Prevent warning from -Wmissing-prototypes. */
256 void _initialize_hppa_hpux_nat (void);
259 _initialize_hppa_hpux_nat (void)
261 struct target_ops
*t
;
263 set_hpux_major_release ();
266 t
= inf_ttrace_target ();
268 t
= inf_ptrace_target ();
271 t
->to_fetch_registers
= hppa_hpux_fetch_inferior_registers
;
272 t
->to_store_registers
= hppa_hpux_store_inferior_registers
;