1 /* Copyright (C) 2009-2015 Free Software Foundation, Inc.
2 Contributed by ARM Ltd.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19 #include "common-defs.h"
20 #include "break-common.h"
21 #include "nat/linux-nat.h"
22 #include "nat/aarch64-linux-hw-point.h"
23 #include "nat/aarch64-linux.h"
25 /* Called when resuming a thread LWP.
26 The hardware debug registers are updated when there is any change. */
29 aarch64_linux_prepare_to_resume (struct lwp_info
*lwp
)
31 struct arch_lwp_info
*info
= lwp_arch_private_info (lwp
);
33 /* NULL means this is the main thread still going through the shell,
34 or, no watchpoint has been set yet. In that case, there's
39 if (DR_HAS_CHANGED (info
->dr_changed_bp
)
40 || DR_HAS_CHANGED (info
->dr_changed_wp
))
42 ptid_t ptid
= ptid_of_lwp (lwp
);
43 int tid
= ptid_get_lwp (ptid
);
44 struct aarch64_debug_reg_state
*state
45 = aarch64_get_debug_reg_state (ptid_get_pid (ptid
));
48 debug_printf ("prepare_to_resume thread %d\n", tid
);
51 if (DR_HAS_CHANGED (info
->dr_changed_wp
))
53 aarch64_linux_set_debug_regs (state
, tid
, 1);
54 DR_CLEAR_CHANGED (info
->dr_changed_wp
);
58 if (DR_HAS_CHANGED (info
->dr_changed_bp
))
60 aarch64_linux_set_debug_regs (state
, tid
, 0);
61 DR_CLEAR_CHANGED (info
->dr_changed_bp
);
66 /* Function to call when a new thread is detected. */
69 aarch64_linux_new_thread (struct lwp_info
*lwp
)
71 struct arch_lwp_info
*info
= XNEW (struct arch_lwp_info
);
73 /* Mark that all the hardware breakpoint/watchpoint register pairs
74 for this thread need to be initialized (with data from
75 aarch_process_info.debug_reg_state). */
76 DR_MARK_ALL_CHANGED (info
->dr_changed_bp
, aarch64_num_bp_regs
);
77 DR_MARK_ALL_CHANGED (info
->dr_changed_wp
, aarch64_num_wp_regs
);
79 lwp_set_arch_private_info (lwp
, info
);
82 /* Convert native siginfo FROM to the siginfo in the layout of the
83 inferior's architecture TO. */
86 aarch64_compat_siginfo_from_siginfo (compat_siginfo_t
*to
, siginfo_t
*from
)
88 memset (to
, 0, sizeof (*to
));
90 to
->si_signo
= from
->si_signo
;
91 to
->si_errno
= from
->si_errno
;
92 to
->si_code
= from
->si_code
;
94 if (to
->si_code
== SI_TIMER
)
96 to
->cpt_si_timerid
= from
->si_timerid
;
97 to
->cpt_si_overrun
= from
->si_overrun
;
98 to
->cpt_si_ptr
= (intptr_t) from
->si_ptr
;
100 else if (to
->si_code
== SI_USER
)
102 to
->cpt_si_pid
= from
->si_pid
;
103 to
->cpt_si_uid
= from
->si_uid
;
105 else if (to
->si_code
< 0)
107 to
->cpt_si_pid
= from
->si_pid
;
108 to
->cpt_si_uid
= from
->si_uid
;
109 to
->cpt_si_ptr
= (intptr_t) from
->si_ptr
;
113 switch (to
->si_signo
)
116 to
->cpt_si_pid
= from
->si_pid
;
117 to
->cpt_si_uid
= from
->si_uid
;
118 to
->cpt_si_status
= from
->si_status
;
119 to
->cpt_si_utime
= from
->si_utime
;
120 to
->cpt_si_stime
= from
->si_stime
;
126 to
->cpt_si_addr
= (intptr_t) from
->si_addr
;
129 to
->cpt_si_band
= from
->si_band
;
130 to
->cpt_si_fd
= from
->si_fd
;
133 to
->cpt_si_pid
= from
->si_pid
;
134 to
->cpt_si_uid
= from
->si_uid
;
135 to
->cpt_si_ptr
= (intptr_t) from
->si_ptr
;
141 /* Convert inferior's architecture siginfo FROM to native siginfo TO. */
144 aarch64_siginfo_from_compat_siginfo (siginfo_t
*to
, compat_siginfo_t
*from
)
146 memset (to
, 0, sizeof (*to
));
148 to
->si_signo
= from
->si_signo
;
149 to
->si_errno
= from
->si_errno
;
150 to
->si_code
= from
->si_code
;
152 if (to
->si_code
== SI_TIMER
)
154 to
->si_timerid
= from
->cpt_si_timerid
;
155 to
->si_overrun
= from
->cpt_si_overrun
;
156 to
->si_ptr
= (void *) (intptr_t) from
->cpt_si_ptr
;
158 else if (to
->si_code
== SI_USER
)
160 to
->si_pid
= from
->cpt_si_pid
;
161 to
->si_uid
= from
->cpt_si_uid
;
165 to
->si_pid
= from
->cpt_si_pid
;
166 to
->si_uid
= from
->cpt_si_uid
;
167 to
->si_ptr
= (void *) (intptr_t) from
->cpt_si_ptr
;
171 switch (to
->si_signo
)
174 to
->si_pid
= from
->cpt_si_pid
;
175 to
->si_uid
= from
->cpt_si_uid
;
176 to
->si_status
= from
->cpt_si_status
;
177 to
->si_utime
= from
->cpt_si_utime
;
178 to
->si_stime
= from
->cpt_si_stime
;
184 to
->si_addr
= (void *) (intptr_t) from
->cpt_si_addr
;
187 to
->si_band
= from
->cpt_si_band
;
188 to
->si_fd
= from
->cpt_si_fd
;
191 to
->si_pid
= from
->cpt_si_pid
;
192 to
->si_uid
= from
->cpt_si_uid
;
193 to
->si_ptr
= (void* ) (intptr_t) from
->cpt_si_ptr
;
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