Use raise_exception_ra (without error code) when raising the illegal opcode operation; raise #GP when setting bits 63:32 of DR6 or DR7. Move helper_get_dr to sysemu/ since it is a privileged instruction that is not needed on user-mode emulators. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
/*
|
|
* i386 breakpoint helpers
|
|
*
|
|
* Copyright (c) 2003 Fabrice Bellard
|
|
*
|
|
* This 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.
|
|
*
|
|
* This 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 this library; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "cpu.h"
|
|
#include "exec/helper-proto.h"
|
|
#include "helper-tcg.h"
|
|
|
|
void QEMU_NORETURN helper_single_step(CPUX86State *env)
|
|
{
|
|
#ifndef CONFIG_USER_ONLY
|
|
check_hw_breakpoints(env, true);
|
|
env->dr[6] |= DR6_BS;
|
|
#endif
|
|
raise_exception(env, EXCP01_DB);
|
|
}
|
|
|
|
void helper_rechecking_single_step(CPUX86State *env)
|
|
{
|
|
if ((env->eflags & TF_MASK) != 0) {
|
|
helper_single_step(env);
|
|
}
|
|
}
|