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/* Machine dependent pthreads code. Hurd/x86_64 version.
Copyright (C) 2000-2023 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
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <assert.h>
#include <mach.h>
#include <mach/machine/thread_status.h>
#include <mach/x86_64/mach_i386.h>
#include <mach/mig_errors.h>
#include <mach/thread_status.h>
int
__thread_set_pcsptp (thread_t thread,
int set_ip, void *ip,
int set_sp, void *sp,
int set_tp, void *tp)
{
error_t err;
struct i386_thread_state state;
struct i386_fsgs_base_state fsgs_state;
mach_msg_type_number_t state_count;
state_count = i386_THREAD_STATE_COUNT;
err = __thread_get_state (thread, i386_REGS_SEGS_STATE,
(thread_state_t) &state, &state_count);
if (err)
return err;
assert (state_count == i386_THREAD_STATE_COUNT);
if (set_sp)
state.ursp = (uintptr_t) sp;
if (set_ip)
state.rip = (uintptr_t) ip;
err = __thread_set_state (thread, i386_REGS_SEGS_STATE,
(thread_state_t) &state, i386_THREAD_STATE_COUNT);
if (err)
return err;
if (set_tp)
{
state_count = i386_FSGS_BASE_STATE_COUNT;
err = __thread_get_state (thread, i386_FSGS_BASE_STATE,
(thread_state_t) &fsgs_state, &state_count);
if (err)
return err;
assert (state_count == i386_FSGS_BASE_STATE_COUNT);
fsgs_state.fs_base = (uintptr_t) tp;
err = __thread_set_state (thread, i386_FSGS_BASE_STATE,
(thread_state_t) &fsgs_state, state_count);
if (err)
return err;
}
return 0;
}
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