mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-24 08:53:35 +08:00
04277e02d7
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
93 lines
3.0 KiB
C
93 lines
3.0 KiB
C
/* Generic definitions for dealing with Mach thread states.
|
|
Copyright (C) 1994-2019 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
|
|
/* Everything else is called `thread_state', but CMU's header file is
|
|
called `thread_status'. Oh boy. */
|
|
#include <mach/thread_status.h>
|
|
|
|
/* The machine-dependent thread_state.h file can either define these
|
|
macros, or just define PC and SP to the register names. */
|
|
|
|
#ifndef MACHINE_THREAD_STATE_SET_PC
|
|
#define MACHINE_THREAD_STATE_SET_PC(ts, pc) \
|
|
((ts)->PC = (unsigned long int) (pc))
|
|
#endif
|
|
#ifndef MACHINE_THREAD_STATE_SET_SP
|
|
#ifdef STACK_GROWTH_UP
|
|
#define MACHINE_THREAD_STATE_SET_SP(ts, stack, size) \
|
|
((ts)->SP = (unsigned long int) (stack))
|
|
#else
|
|
#define MACHINE_THREAD_STATE_SET_SP(ts, stack, size) \
|
|
((ts)->SP = (unsigned long int) (stack) + (size))
|
|
#endif
|
|
#endif
|
|
|
|
/* This copies architecture-specific bits from the current thread to the new
|
|
thread state. */
|
|
#ifndef MACHINE_THREAD_STATE_FIX_NEW
|
|
# define MACHINE_THREAD_STATE_FIX_NEW(ts)
|
|
#endif
|
|
|
|
/* These functions are of use in machine-dependent signal trampoline
|
|
implementations. */
|
|
|
|
#include <string.h> /* size_t, memcpy */
|
|
#include <mach/mach_interface.h> /* __thread_get_state */
|
|
|
|
static inline int
|
|
machine_get_state (thread_t thread, struct machine_thread_all_state *state,
|
|
int flavor, void *stateptr, void *scpptr, size_t size)
|
|
{
|
|
if (state->set & (1 << flavor))
|
|
{
|
|
/* Copy the saved state. */
|
|
memcpy (scpptr, stateptr, size);
|
|
return 1;
|
|
}
|
|
else
|
|
{
|
|
/* No one asked about this flavor of state before; fetch the state
|
|
directly from the kernel into the sigcontext. */
|
|
mach_msg_type_number_t got = (size / sizeof (int));
|
|
return (! __thread_get_state (thread, flavor, scpptr, &got)
|
|
&& got == (size / sizeof (int)));
|
|
}
|
|
}
|
|
|
|
static inline int
|
|
machine_get_basic_state (thread_t thread,
|
|
struct machine_thread_all_state *state)
|
|
{
|
|
mach_msg_type_number_t count;
|
|
|
|
if (state->set & (1 << MACHINE_THREAD_STATE_FLAVOR))
|
|
return 1;
|
|
|
|
count = MACHINE_THREAD_STATE_COUNT;
|
|
if (__thread_get_state (thread, MACHINE_THREAD_STATE_FLAVOR,
|
|
(natural_t *) &state->basic,
|
|
&count) != KERN_SUCCESS ||
|
|
count != MACHINE_THREAD_STATE_COUNT)
|
|
/* What kind of thread?? */
|
|
return 0; /* XXX */
|
|
|
|
state->set |= 1 << MACHINE_THREAD_STATE_FLAVOR;
|
|
return 1;
|
|
}
|