1 /* Native-dependent code for PA-RISC HP-UX.
3 Copyright 2004 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 2 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, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
27 #include "gdb_assert.h"
28 #include <sys/ptrace.h>
29 #include <machine/save_state.h>
32 #include <sys/ttrace.h>
35 #include "hppa-tdep.h"
36 #include "inf-ptrace.h"
37 #include "inf-ttrace.h"
39 /* HP-UX 10.20 has a different name than HP-UX 11.00 and later.
40 Apparently, the intended usage changed. Unfortunately HP didn't
41 care about backwards compatibility. */
43 #define ss_mpsfu_high ss_tlsp
46 int child_suppress_run
= 0; /* Non-zero if we should pretend not to be
49 static int hppa_hpux_save_state_offset
[] =
52 ssoff(ss_narrow
.ss_gr1
),
53 ssoff(ss_narrow
.ss_rp
),
54 ssoff(ss_narrow
.ss_gr3
),
55 ssoff(ss_narrow
.ss_gr4
),
56 ssoff(ss_narrow
.ss_gr5
),
57 ssoff(ss_narrow
.ss_gr6
),
58 ssoff(ss_narrow
.ss_gr7
),
59 ssoff(ss_narrow
.ss_gr8
),
60 ssoff(ss_narrow
.ss_gr9
),
61 ssoff(ss_narrow
.ss_gr10
),
62 ssoff(ss_narrow
.ss_gr11
),
63 ssoff(ss_narrow
.ss_gr12
),
64 ssoff(ss_narrow
.ss_gr13
),
65 ssoff(ss_narrow
.ss_gr14
),
66 ssoff(ss_narrow
.ss_gr15
),
67 ssoff(ss_narrow
.ss_gr16
),
68 ssoff(ss_narrow
.ss_gr17
),
69 ssoff(ss_narrow
.ss_gr18
),
70 ssoff(ss_narrow
.ss_gr19
),
71 ssoff(ss_narrow
.ss_gr20
),
72 ssoff(ss_narrow
.ss_gr21
),
73 ssoff(ss_narrow
.ss_gr22
),
74 ssoff(ss_narrow
.ss_arg3
),
75 ssoff(ss_narrow
.ss_arg2
),
76 ssoff(ss_narrow
.ss_arg1
),
77 ssoff(ss_narrow
.ss_arg0
),
78 ssoff(ss_narrow
.ss_dp
),
79 ssoff(ss_narrow
.ss_ret0
),
80 ssoff(ss_narrow
.ss_ret1
),
81 ssoff(ss_narrow
.ss_sp
),
82 ssoff(ss_narrow
.ss_gr31
),
83 ssoff(ss_narrow
.ss_cr11
),
84 ssoff(ss_narrow
.ss_pcoq_head
),
85 ssoff(ss_narrow
.ss_pcsq_head
),
86 ssoff(ss_narrow
.ss_pcoq_tail
),
87 ssoff(ss_narrow
.ss_pcsq_tail
),
88 ssoff(ss_narrow
.ss_cr15
),
89 ssoff(ss_narrow
.ss_cr19
),
90 ssoff(ss_narrow
.ss_cr20
),
91 ssoff(ss_narrow
.ss_cr21
),
92 ssoff(ss_narrow
.ss_cr22
),
93 ssoff(ss_narrow
.ss_cpustate
),
94 ssoff(ss_narrow
.ss_sr4
),
95 ssoff(ss_narrow
.ss_sr0
),
96 ssoff(ss_narrow
.ss_sr1
),
97 ssoff(ss_narrow
.ss_sr2
),
98 ssoff(ss_narrow
.ss_sr3
),
99 ssoff(ss_narrow
.ss_sr5
),
100 ssoff(ss_narrow
.ss_sr6
),
101 ssoff(ss_narrow
.ss_sr7
),
102 ssoff(ss_narrow
.ss_cr0
),
103 ssoff(ss_narrow
.ss_cr8
),
104 ssoff(ss_narrow
.ss_cr9
),
105 ssoff(ss_narrow
.ss_cr10
),
106 ssoff(ss_narrow
.ss_cr12
),
107 ssoff(ss_narrow
.ss_cr13
),
108 ssoff(ss_narrow
.ss_cr24
),
109 ssoff(ss_narrow
.ss_cr25
),
110 ssoff(ss_narrow
.ss_cr26
),
111 ssoff(ss_narrow
.ss_mpsfu_high
),
112 ssoff(ss_narrow
.ss_mpsfu_low
),
113 ssoff(ss_narrow
.ss_mpsfu_ovflo
),
182 hppa_hpux_cannot_fetch_register (int regnum
)
184 gdb_assert (regnum
>= 0 && regnum
< NUM_REGS
);
185 return (regnum
>= ARRAY_SIZE(hppa_hpux_save_state_offset
));
189 hppa_hpux_cannot_store_register (int regnum
)
191 return hppa_hpux_cannot_fetch_register (regnum
);
194 /* Just in case a future version of PA-RISC HP-UX won't have ptrace(2)
196 #ifndef PTRACE_TYPE_RET
197 #define PTRACE_TYPE_RET void
201 hppa_hpux_fetch_register (int regnum
)
205 PTRACE_TYPE_RET
*buf
;
209 if (hppa_hpux_cannot_fetch_register (regnum
))
211 regcache_raw_supply (current_regcache
, regnum
, NULL
);
215 pid
= ptid_get_pid (inferior_ptid
);
217 /* This isn't really an address. But ptrace thinks of it as one. */
218 addr
= hppa_hpux_save_state_offset
[regnum
];
219 size
= register_size (current_gdbarch
, regnum
);
221 gdb_assert (size
== 4 || size
== 8);
226 lwpid_t lwp
= ptid_get_lwp (inferior_ptid
);
228 if (ttrace (TT_LWP_RUREGS
, pid
, lwp
, addr
, size
, (uintptr_t)buf
) == -1)
229 error ("Couldn't read register %s (#%d): %s",
230 REGISTER_NAME (regnum
), regnum
, safe_strerror (errno
));
236 /* Read the register contents from the inferior a chuck at the time. */
237 for (i
= 0; i
< size
/ sizeof (PTRACE_TYPE_RET
); i
++)
240 buf
[i
] = ptrace (PT_RUREGS
, pid
, (PTRACE_TYPE_ARG3
) addr
, 0, 0);
242 error ("Couldn't read register %s (#%d): %s",
243 REGISTER_NAME (regnum
), regnum
, safe_strerror (errno
));
245 addr
+= sizeof (PTRACE_TYPE_RET
);
250 regcache_raw_supply (current_regcache
, regnum
, buf
);
254 hppa_hpux_fetch_inferior_registers (int regnum
)
257 for (regnum
= 0; regnum
< NUM_REGS
; regnum
++)
258 hppa_hpux_fetch_register (regnum
);
260 hppa_hpux_fetch_register (regnum
);
263 /* Store register REGNUM into the inferior. */
266 hppa_hpux_store_register (int regnum
)
270 PTRACE_TYPE_RET
*buf
;
273 if (hppa_hpux_cannot_store_register (regnum
))
276 pid
= ptid_get_pid (inferior_ptid
);
278 /* This isn't really an address. But ptrace thinks of it as one. */
279 addr
= hppa_hpux_save_state_offset
[regnum
];
280 size
= register_size (current_gdbarch
, regnum
);
282 gdb_assert (size
== 4 || size
== 8);
285 regcache_raw_collect (current_regcache
, regnum
, buf
);
289 lwpid_t lwp
= ptid_get_lwp (inferior_ptid
);
291 if (ttrace (TT_LWP_WUREGS
, pid
, lwp
, addr
, size
, (uintptr_t)buf
) == -1)
292 error ("Couldn't write register %s (#%d): %s",
293 REGISTER_NAME (regnum
), regnum
, safe_strerror (errno
));
299 /* Write the register contents into the inferior a chunk at the time. */
300 for (i
= 0; i
< size
/ sizeof (PTRACE_TYPE_RET
); i
++)
303 ptrace (PT_WUREGS
, pid
, (PTRACE_TYPE_ARG3
) addr
, buf
[i
], 0);
305 error ("Couldn't write register %s (#%d): %s",
306 REGISTER_NAME (regnum
), regnum
, safe_strerror (errno
));
308 addr
+= sizeof (PTRACE_TYPE_RET
);
314 /* Store register REGNUM back into the inferior. If REGNUM is -1, do
315 this for all registers (including the floating point registers). */
318 hppa_hpux_store_inferior_registers (int regnum
)
321 for (regnum
= 0; regnum
< NUM_REGS
; regnum
++)
322 hppa_hpux_store_register (regnum
);
324 hppa_hpux_store_register (regnum
);
328 hppa_hpux_child_can_run (void)
330 /* This variable is controlled by modules that layer their own process
331 structure atop that provided here. hpux-thread.c does this because
332 of the HP-UX user-mode level thread model. */
334 return !child_suppress_run
;
338 /* Prevent warning from -Wmissing-prototypes. */
339 void _initialize_hppa_hpux_nat (void);
342 _initialize_hppa_hpux_nat (void)
344 struct target_ops
*t
;
347 t
= inf_ttrace_target ();
349 t
= inf_ptrace_target ();
352 t
->to_fetch_registers
= hppa_hpux_fetch_inferior_registers
;
353 t
->to_store_registers
= hppa_hpux_store_inferior_registers
;
354 t
->to_can_run
= hppa_hpux_child_can_run
;