1 /* Generic definitions for dealing with Mach thread states.
2 Copyright (C) 1994-2013 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
20 /* Everything else is called `thread_state', but CMU's header file is
21 called `thread_status'. Oh boy. */
22 #include <mach/thread_status.h>
24 /* The machine-dependent thread_state.h file can either define these
25 macros, or just define PC and SP to the register names. */
27 #ifndef MACHINE_THREAD_STATE_SET_PC
28 #define MACHINE_THREAD_STATE_SET_PC(ts, pc) \
29 ((ts)->PC = (unsigned long int) (pc))
31 #ifndef MACHINE_THREAD_STATE_SET_SP
32 #ifdef STACK_GROWTH_UP
33 #define MACHINE_THREAD_STATE_SET_SP(ts, stack, size) \
34 ((ts)->SP = (unsigned long int) (stack))
36 #define MACHINE_THREAD_STATE_SET_SP(ts, stack, size) \
37 ((ts)->SP = (unsigned long int) (stack) + (size))
41 /* These functions are of use in machine-dependent signal trampoline
44 #include <string.h> /* size_t, memcpy */
45 #include <mach/mach_interface.h> /* __thread_get_state */
48 machine_get_state (thread_t thread
, struct machine_thread_all_state
*state
,
49 int flavor
, void *stateptr
, void *scpptr
, size_t size
)
51 if (state
->set
& (1 << flavor
))
53 /* Copy the saved state. */
54 memcpy (scpptr
, stateptr
, size
);
59 /* No one asked about this flavor of state before; fetch the state
60 directly from the kernel into the sigcontext. */
61 mach_msg_type_number_t got
= (size
/ sizeof (int));
62 return (! __thread_get_state (thread
, flavor
, scpptr
, &got
)
63 && got
== (size
/ sizeof (int)));
68 machine_get_basic_state (thread_t thread
,
69 struct machine_thread_all_state
*state
)
71 mach_msg_type_number_t count
;
73 if (state
->set
& (1 << MACHINE_THREAD_STATE_FLAVOR
))
76 count
= MACHINE_THREAD_STATE_COUNT
;
77 if (__thread_get_state (thread
, MACHINE_THREAD_STATE_FLAVOR
,
78 (natural_t
*) &state
->basic
,
79 &count
) != KERN_SUCCESS
||
80 count
!= MACHINE_THREAD_STATE_COUNT
)
81 /* What kind of thread?? */
84 state
->set
|= 1 << MACHINE_THREAD_STATE_FLAVOR
;