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/*
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* User emulator execution
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*
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* Copyright (c) 2003-2005 Fabrice Bellard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h" |
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#include "exec.h" |
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#include "disas.h" |
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#include "tcg.h" |
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#undef EAX
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#undef ECX
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#undef EDX
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#undef EBX
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#undef ESP
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#undef EBP
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#undef ESI
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#undef EDI
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#undef EIP
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#include <signal.h> |
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#ifdef __linux__
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#include <sys/ucontext.h> |
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#endif
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//#define DEBUG_SIGNAL
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static void exception_action(CPUState *env1) |
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{ |
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#if defined(TARGET_I386)
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raise_exception_err(env1->exception_index, env1->error_code); |
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#else
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cpu_loop_exit(env1); |
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#endif
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} |
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/* exit the current TB from a signal handler. The host registers are
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restored in a state compatible with the CPU emulator
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*/
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void cpu_resume_from_signal(CPUState *env1, void *puc) |
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{ |
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#ifdef __linux__
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struct ucontext *uc = puc;
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#elif defined(__OpenBSD__)
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struct sigcontext *uc = puc;
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#endif
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env = env1; |
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/* XXX: restore cpu registers saved in host registers */
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if (puc) {
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/* XXX: use siglongjmp ? */
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#ifdef __linux__
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#ifdef __ia64
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sigprocmask(SIG_SETMASK, (sigset_t *)&uc->uc_sigmask, NULL);
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#else
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sigprocmask(SIG_SETMASK, &uc->uc_sigmask, NULL);
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#endif
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#elif defined(__OpenBSD__)
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sigprocmask(SIG_SETMASK, &uc->sc_mask, NULL);
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#endif
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} |
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env->exception_index = -1;
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longjmp(env->jmp_env, 1);
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} |
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/* 'pc' is the host PC at which the exception was raised. 'address' is
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the effective address of the memory exception. 'is_write' is 1 if a
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write caused the exception and otherwise 0'. 'old_set' is the
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signal set which should be restored */
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static inline int handle_cpu_signal(unsigned long pc, unsigned long address, |
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int is_write, sigset_t *old_set,
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void *puc)
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{ |
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TranslationBlock *tb; |
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int ret;
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if (cpu_single_env) {
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env = cpu_single_env; /* XXX: find a correct solution for multithread */
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} |
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#if defined(DEBUG_SIGNAL)
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qemu_printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n",
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pc, address, is_write, *(unsigned long *)old_set); |
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#endif
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/* XXX: locking issue */
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if (is_write && page_unprotect(h2g(address), pc, puc)) {
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return 1; |
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} |
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/* see if it is an MMU fault */
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ret = cpu_handle_mmu_fault(env, address, is_write, MMU_USER_IDX, 0);
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if (ret < 0) { |
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return 0; /* not an MMU fault */ |
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} |
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if (ret == 0) { |
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return 1; /* the MMU fault was handled without causing real CPU fault */ |
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} |
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/* now we have a real cpu fault */
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tb = tb_find_pc(pc); |
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if (tb) {
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/* the PC is inside the translated code. It means that we have
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a virtual CPU fault */
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cpu_restore_state(tb, env, pc); |
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} |
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/* we restore the process signal mask as the sigreturn should
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do it (XXX: use sigsetjmp) */
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sigprocmask(SIG_SETMASK, old_set, NULL);
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exception_action(env); |
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/* never comes here */
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return 1; |
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} |
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#if defined(__i386__)
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#if defined(__APPLE__)
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#include <sys/ucontext.h> |
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#define EIP_sig(context) (*((unsigned long *)&(context)->uc_mcontext->ss.eip)) |
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#define TRAP_sig(context) ((context)->uc_mcontext->es.trapno)
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#define ERROR_sig(context) ((context)->uc_mcontext->es.err)
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#define MASK_sig(context) ((context)->uc_sigmask)
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#elif defined(__NetBSD__)
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#include <ucontext.h> |
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#define EIP_sig(context) ((context)->uc_mcontext.__gregs[_REG_EIP])
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#define TRAP_sig(context) ((context)->uc_mcontext.__gregs[_REG_TRAPNO])
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#define ERROR_sig(context) ((context)->uc_mcontext.__gregs[_REG_ERR])
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#define MASK_sig(context) ((context)->uc_sigmask)
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#elif defined(__FreeBSD__) || defined(__DragonFly__)
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#include <ucontext.h> |
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#define EIP_sig(context) (*((unsigned long *)&(context)->uc_mcontext.mc_eip)) |
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#define TRAP_sig(context) ((context)->uc_mcontext.mc_trapno)
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#define ERROR_sig(context) ((context)->uc_mcontext.mc_err)
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#define MASK_sig(context) ((context)->uc_sigmask)
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#elif defined(__OpenBSD__)
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#define EIP_sig(context) ((context)->sc_eip)
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#define TRAP_sig(context) ((context)->sc_trapno)
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#define ERROR_sig(context) ((context)->sc_err)
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#define MASK_sig(context) ((context)->sc_mask)
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#else
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#define EIP_sig(context) ((context)->uc_mcontext.gregs[REG_EIP])
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#define TRAP_sig(context) ((context)->uc_mcontext.gregs[REG_TRAPNO])
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#define ERROR_sig(context) ((context)->uc_mcontext.gregs[REG_ERR])
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#define MASK_sig(context) ((context)->uc_sigmask)
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#endif
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int cpu_signal_handler(int host_signum, void *pinfo, |
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void *puc)
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{ |
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siginfo_t *info = pinfo; |
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#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__DragonFly__)
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ucontext_t *uc = puc; |
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#elif defined(__OpenBSD__)
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struct sigcontext *uc = puc;
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#else
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struct ucontext *uc = puc;
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#endif
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unsigned long pc; |
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int trapno;
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#ifndef REG_EIP
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/* for glibc 2.1 */
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#define REG_EIP EIP
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#define REG_ERR ERR
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#define REG_TRAPNO TRAPNO
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#endif
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pc = EIP_sig(uc); |
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trapno = TRAP_sig(uc); |
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return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
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trapno == 0xe ?
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(ERROR_sig(uc) >> 1) & 1 : 0, |
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&MASK_sig(uc), puc); |
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} |
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#elif defined(__x86_64__)
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#ifdef __NetBSD__
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#define PC_sig(context) _UC_MACHINE_PC(context)
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#define TRAP_sig(context) ((context)->uc_mcontext.__gregs[_REG_TRAPNO])
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#define ERROR_sig(context) ((context)->uc_mcontext.__gregs[_REG_ERR])
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#define MASK_sig(context) ((context)->uc_sigmask)
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#elif defined(__OpenBSD__)
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#define PC_sig(context) ((context)->sc_rip)
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#define TRAP_sig(context) ((context)->sc_trapno)
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#define ERROR_sig(context) ((context)->sc_err)
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#define MASK_sig(context) ((context)->sc_mask)
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#elif defined(__FreeBSD__) || defined(__DragonFly__)
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#include <ucontext.h> |
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#define PC_sig(context) (*((unsigned long *)&(context)->uc_mcontext.mc_rip)) |
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#define TRAP_sig(context) ((context)->uc_mcontext.mc_trapno)
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#define ERROR_sig(context) ((context)->uc_mcontext.mc_err)
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#define MASK_sig(context) ((context)->uc_sigmask)
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#else
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#define PC_sig(context) ((context)->uc_mcontext.gregs[REG_RIP])
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#define TRAP_sig(context) ((context)->uc_mcontext.gregs[REG_TRAPNO])
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#define ERROR_sig(context) ((context)->uc_mcontext.gregs[REG_ERR])
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#define MASK_sig(context) ((context)->uc_sigmask)
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#endif
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int cpu_signal_handler(int host_signum, void *pinfo, |
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void *puc)
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{ |
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siginfo_t *info = pinfo; |
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unsigned long pc; |
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#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__DragonFly__)
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ucontext_t *uc = puc; |
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#elif defined(__OpenBSD__)
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struct sigcontext *uc = puc;
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#else
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struct ucontext *uc = puc;
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#endif
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pc = PC_sig(uc); |
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return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
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TRAP_sig(uc) == 0xe ?
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(ERROR_sig(uc) >> 1) & 1 : 0, |
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&MASK_sig(uc), puc); |
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} |
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#elif defined(_ARCH_PPC)
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/***********************************************************************
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* signal context platform-specific definitions
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* From Wine
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*/
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#ifdef linux
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/* All Registers access - only for local access */
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#define REG_sig(reg_name, context) \
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((context)->uc_mcontext.regs->reg_name) |
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/* Gpr Registers access */
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#define GPR_sig(reg_num, context) REG_sig(gpr[reg_num], context)
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/* Program counter */
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#define IAR_sig(context) REG_sig(nip, context)
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/* Machine State Register (Supervisor) */
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#define MSR_sig(context) REG_sig(msr, context)
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/* Count register */
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#define CTR_sig(context) REG_sig(ctr, context)
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/* User's integer exception register */
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#define XER_sig(context) REG_sig(xer, context)
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/* Link register */
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#define LR_sig(context) REG_sig(link, context)
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/* Condition register */
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#define CR_sig(context) REG_sig(ccr, context)
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/* Float Registers access */
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#define FLOAT_sig(reg_num, context) \
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(((double *)((char *)((context)->uc_mcontext.regs + 48 * 4)))[reg_num]) |
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#define FPSCR_sig(context) \
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(*(int *)((char *)((context)->uc_mcontext.regs + (48 + 32 * 2) * 4))) |
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/* Exception Registers access */
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#define DAR_sig(context) REG_sig(dar, context)
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#define DSISR_sig(context) REG_sig(dsisr, context)
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#define TRAP_sig(context) REG_sig(trap, context)
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#endif /* linux */ |
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#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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#include <ucontext.h> |
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#define IAR_sig(context) ((context)->uc_mcontext.mc_srr0)
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#define MSR_sig(context) ((context)->uc_mcontext.mc_srr1)
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#define CTR_sig(context) ((context)->uc_mcontext.mc_ctr)
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#define XER_sig(context) ((context)->uc_mcontext.mc_xer)
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#define LR_sig(context) ((context)->uc_mcontext.mc_lr)
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#define CR_sig(context) ((context)->uc_mcontext.mc_cr)
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/* Exception Registers access */
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#define DAR_sig(context) ((context)->uc_mcontext.mc_dar)
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#define DSISR_sig(context) ((context)->uc_mcontext.mc_dsisr)
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#define TRAP_sig(context) ((context)->uc_mcontext.mc_exc)
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#endif /* __FreeBSD__|| __FreeBSD_kernel__ */ |
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#ifdef __APPLE__
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#include <sys/ucontext.h> |
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typedef struct ucontext SIGCONTEXT; |
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/* All Registers access - only for local access */
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#define REG_sig(reg_name, context) \
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((context)->uc_mcontext->ss.reg_name) |
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#define FLOATREG_sig(reg_name, context) \
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((context)->uc_mcontext->fs.reg_name) |
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#define EXCEPREG_sig(reg_name, context) \
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((context)->uc_mcontext->es.reg_name) |
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#define VECREG_sig(reg_name, context) \
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((context)->uc_mcontext->vs.reg_name) |
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/* Gpr Registers access */
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#define GPR_sig(reg_num, context) REG_sig(r##reg_num, context) |
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/* Program counter */
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#define IAR_sig(context) REG_sig(srr0, context)
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/* Machine State Register (Supervisor) */
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#define MSR_sig(context) REG_sig(srr1, context)
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#define CTR_sig(context) REG_sig(ctr, context)
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/* Link register */
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#define XER_sig(context) REG_sig(xer, context)
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/* User's integer exception register */
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#define LR_sig(context) REG_sig(lr, context)
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/* Condition register */
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#define CR_sig(context) REG_sig(cr, context)
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/* Float Registers access */
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#define FLOAT_sig(reg_num, context) \
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FLOATREG_sig(fpregs[reg_num], context) |
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#define FPSCR_sig(context) \
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((double)FLOATREG_sig(fpscr, context))
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/* Exception Registers access */
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/* Fault registers for coredump */
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#define DAR_sig(context) EXCEPREG_sig(dar, context)
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#define DSISR_sig(context) EXCEPREG_sig(dsisr, context)
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/* number of powerpc exception taken */
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#define TRAP_sig(context) EXCEPREG_sig(exception, context)
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#endif /* __APPLE__ */ |
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int cpu_signal_handler(int host_signum, void *pinfo, |
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void *puc)
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{ |
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siginfo_t *info = pinfo; |
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#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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ucontext_t *uc = puc; |
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#else
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struct ucontext *uc = puc;
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#endif
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unsigned long pc; |
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int is_write;
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pc = IAR_sig(uc); |
338 |
is_write = 0;
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#if 0
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/* ppc 4xx case */
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if (DSISR_sig(uc) & 0x00800000) {
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is_write = 1;
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}
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#else
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if (TRAP_sig(uc) != 0x400 && (DSISR_sig(uc) & 0x02000000)) { |
346 |
is_write = 1;
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} |
348 |
#endif
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return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
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is_write, &uc->uc_sigmask, puc); |
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} |
352 |
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#elif defined(__alpha__)
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int cpu_signal_handler(int host_signum, void *pinfo, |
356 |
void *puc)
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{ |
358 |
siginfo_t *info = pinfo; |
359 |
struct ucontext *uc = puc;
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uint32_t *pc = uc->uc_mcontext.sc_pc; |
361 |
uint32_t insn = *pc; |
362 |
int is_write = 0; |
363 |
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364 |
/* XXX: need kernel patch to get write flag faster */
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switch (insn >> 26) { |
366 |
case 0x0d: /* stw */ |
367 |
case 0x0e: /* stb */ |
368 |
case 0x0f: /* stq_u */ |
369 |
case 0x24: /* stf */ |
370 |
case 0x25: /* stg */ |
371 |
case 0x26: /* sts */ |
372 |
case 0x27: /* stt */ |
373 |
case 0x2c: /* stl */ |
374 |
case 0x2d: /* stq */ |
375 |
case 0x2e: /* stl_c */ |
376 |
case 0x2f: /* stq_c */ |
377 |
is_write = 1;
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} |
379 |
|
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return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
381 |
is_write, &uc->uc_sigmask, puc); |
382 |
} |
383 |
#elif defined(__sparc__)
|
384 |
|
385 |
int cpu_signal_handler(int host_signum, void *pinfo, |
386 |
void *puc)
|
387 |
{ |
388 |
siginfo_t *info = pinfo; |
389 |
int is_write;
|
390 |
uint32_t insn; |
391 |
#if !defined(__arch64__) || defined(CONFIG_SOLARIS)
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392 |
uint32_t *regs = (uint32_t *)(info + 1);
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void *sigmask = (regs + 20); |
394 |
/* XXX: is there a standard glibc define ? */
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395 |
unsigned long pc = regs[1]; |
396 |
#else
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397 |
#ifdef __linux__
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398 |
struct sigcontext *sc = puc;
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399 |
unsigned long pc = sc->sigc_regs.tpc; |
400 |
void *sigmask = (void *)sc->sigc_mask; |
401 |
#elif defined(__OpenBSD__)
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402 |
struct sigcontext *uc = puc;
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403 |
unsigned long pc = uc->sc_pc; |
404 |
void *sigmask = (void *)(long)uc->sc_mask; |
405 |
#endif
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406 |
#endif
|
407 |
|
408 |
/* XXX: need kernel patch to get write flag faster */
|
409 |
is_write = 0;
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410 |
insn = *(uint32_t *)pc; |
411 |
if ((insn >> 30) == 3) { |
412 |
switch ((insn >> 19) & 0x3f) { |
413 |
case 0x05: /* stb */ |
414 |
case 0x15: /* stba */ |
415 |
case 0x06: /* sth */ |
416 |
case 0x16: /* stha */ |
417 |
case 0x04: /* st */ |
418 |
case 0x14: /* sta */ |
419 |
case 0x07: /* std */ |
420 |
case 0x17: /* stda */ |
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case 0x0e: /* stx */ |
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case 0x1e: /* stxa */ |
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case 0x24: /* stf */ |
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case 0x34: /* stfa */ |
425 |
case 0x27: /* stdf */ |
426 |
case 0x37: /* stdfa */ |
427 |
case 0x26: /* stqf */ |
428 |
case 0x36: /* stqfa */ |
429 |
case 0x25: /* stfsr */ |
430 |
case 0x3c: /* casa */ |
431 |
case 0x3e: /* casxa */ |
432 |
is_write = 1;
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433 |
break;
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434 |
} |
435 |
} |
436 |
return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
437 |
is_write, sigmask, NULL);
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438 |
} |
439 |
|
440 |
#elif defined(__arm__)
|
441 |
|
442 |
int cpu_signal_handler(int host_signum, void *pinfo, |
443 |
void *puc)
|
444 |
{ |
445 |
siginfo_t *info = pinfo; |
446 |
struct ucontext *uc = puc;
|
447 |
unsigned long pc; |
448 |
int is_write;
|
449 |
|
450 |
#if (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ <= 3)) |
451 |
pc = uc->uc_mcontext.gregs[R15]; |
452 |
#else
|
453 |
pc = uc->uc_mcontext.arm_pc; |
454 |
#endif
|
455 |
/* XXX: compute is_write */
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456 |
is_write = 0;
|
457 |
return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
458 |
is_write, |
459 |
&uc->uc_sigmask, puc); |
460 |
} |
461 |
|
462 |
#elif defined(__mc68000)
|
463 |
|
464 |
int cpu_signal_handler(int host_signum, void *pinfo, |
465 |
void *puc)
|
466 |
{ |
467 |
siginfo_t *info = pinfo; |
468 |
struct ucontext *uc = puc;
|
469 |
unsigned long pc; |
470 |
int is_write;
|
471 |
|
472 |
pc = uc->uc_mcontext.gregs[16];
|
473 |
/* XXX: compute is_write */
|
474 |
is_write = 0;
|
475 |
return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
476 |
is_write, |
477 |
&uc->uc_sigmask, puc); |
478 |
} |
479 |
|
480 |
#elif defined(__ia64)
|
481 |
|
482 |
#ifndef __ISR_VALID
|
483 |
/* This ought to be in <bits/siginfo.h>... */
|
484 |
# define __ISR_VALID 1 |
485 |
#endif
|
486 |
|
487 |
int cpu_signal_handler(int host_signum, void *pinfo, void *puc) |
488 |
{ |
489 |
siginfo_t *info = pinfo; |
490 |
struct ucontext *uc = puc;
|
491 |
unsigned long ip; |
492 |
int is_write = 0; |
493 |
|
494 |
ip = uc->uc_mcontext.sc_ip; |
495 |
switch (host_signum) {
|
496 |
case SIGILL:
|
497 |
case SIGFPE:
|
498 |
case SIGSEGV:
|
499 |
case SIGBUS:
|
500 |
case SIGTRAP:
|
501 |
if (info->si_code && (info->si_segvflags & __ISR_VALID)) {
|
502 |
/* ISR.W (write-access) is bit 33: */
|
503 |
is_write = (info->si_isr >> 33) & 1; |
504 |
} |
505 |
break;
|
506 |
|
507 |
default:
|
508 |
break;
|
509 |
} |
510 |
return handle_cpu_signal(ip, (unsigned long)info->si_addr, |
511 |
is_write, |
512 |
(sigset_t *)&uc->uc_sigmask, puc); |
513 |
} |
514 |
|
515 |
#elif defined(__s390__)
|
516 |
|
517 |
int cpu_signal_handler(int host_signum, void *pinfo, |
518 |
void *puc)
|
519 |
{ |
520 |
siginfo_t *info = pinfo; |
521 |
struct ucontext *uc = puc;
|
522 |
unsigned long pc; |
523 |
uint16_t *pinsn; |
524 |
int is_write = 0; |
525 |
|
526 |
pc = uc->uc_mcontext.psw.addr; |
527 |
|
528 |
/* ??? On linux, the non-rt signal handler has 4 (!) arguments instead
|
529 |
of the normal 2 arguments. The 3rd argument contains the "int_code"
|
530 |
from the hardware which does in fact contain the is_write value.
|
531 |
The rt signal handler, as far as I can tell, does not give this value
|
532 |
at all. Not that we could get to it from here even if it were. */
|
533 |
/* ??? This is not even close to complete, since it ignores all
|
534 |
of the read-modify-write instructions. */
|
535 |
pinsn = (uint16_t *)pc; |
536 |
switch (pinsn[0] >> 8) { |
537 |
case 0x50: /* ST */ |
538 |
case 0x42: /* STC */ |
539 |
case 0x40: /* STH */ |
540 |
is_write = 1;
|
541 |
break;
|
542 |
case 0xc4: /* RIL format insns */ |
543 |
switch (pinsn[0] & 0xf) { |
544 |
case 0xf: /* STRL */ |
545 |
case 0xb: /* STGRL */ |
546 |
case 0x7: /* STHRL */ |
547 |
is_write = 1;
|
548 |
} |
549 |
break;
|
550 |
case 0xe3: /* RXY format insns */ |
551 |
switch (pinsn[2] & 0xff) { |
552 |
case 0x50: /* STY */ |
553 |
case 0x24: /* STG */ |
554 |
case 0x72: /* STCY */ |
555 |
case 0x70: /* STHY */ |
556 |
case 0x8e: /* STPQ */ |
557 |
case 0x3f: /* STRVH */ |
558 |
case 0x3e: /* STRV */ |
559 |
case 0x2f: /* STRVG */ |
560 |
is_write = 1;
|
561 |
} |
562 |
break;
|
563 |
} |
564 |
return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
565 |
is_write, &uc->uc_sigmask, puc); |
566 |
} |
567 |
|
568 |
#elif defined(__mips__)
|
569 |
|
570 |
int cpu_signal_handler(int host_signum, void *pinfo, |
571 |
void *puc)
|
572 |
{ |
573 |
siginfo_t *info = pinfo; |
574 |
struct ucontext *uc = puc;
|
575 |
greg_t pc = uc->uc_mcontext.pc; |
576 |
int is_write;
|
577 |
|
578 |
/* XXX: compute is_write */
|
579 |
is_write = 0;
|
580 |
return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
581 |
is_write, &uc->uc_sigmask, puc); |
582 |
} |
583 |
|
584 |
#elif defined(__hppa__)
|
585 |
|
586 |
int cpu_signal_handler(int host_signum, void *pinfo, |
587 |
void *puc)
|
588 |
{ |
589 |
struct siginfo *info = pinfo;
|
590 |
struct ucontext *uc = puc;
|
591 |
unsigned long pc = uc->uc_mcontext.sc_iaoq[0]; |
592 |
uint32_t insn = *(uint32_t *)pc; |
593 |
int is_write = 0; |
594 |
|
595 |
/* XXX: need kernel patch to get write flag faster. */
|
596 |
switch (insn >> 26) { |
597 |
case 0x1a: /* STW */ |
598 |
case 0x19: /* STH */ |
599 |
case 0x18: /* STB */ |
600 |
case 0x1b: /* STWM */ |
601 |
is_write = 1;
|
602 |
break;
|
603 |
|
604 |
case 0x09: /* CSTWX, FSTWX, FSTWS */ |
605 |
case 0x0b: /* CSTDX, FSTDX, FSTDS */ |
606 |
/* Distinguish from coprocessor load ... */
|
607 |
is_write = (insn >> 9) & 1; |
608 |
break;
|
609 |
|
610 |
case 0x03: |
611 |
switch ((insn >> 6) & 15) { |
612 |
case 0xa: /* STWS */ |
613 |
case 0x9: /* STHS */ |
614 |
case 0x8: /* STBS */ |
615 |
case 0xe: /* STWAS */ |
616 |
case 0xc: /* STBYS */ |
617 |
is_write = 1;
|
618 |
} |
619 |
break;
|
620 |
} |
621 |
|
622 |
return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
623 |
is_write, &uc->uc_sigmask, puc); |
624 |
} |
625 |
|
626 |
#else
|
627 |
|
628 |
#error host CPU specific signal handler needed
|
629 |
|
630 |
#endif
|
631 |
|
632 |
#if defined(TARGET_I386)
|
633 |
|
634 |
void cpu_x86_load_seg(CPUX86State *s, int seg_reg, int selector) |
635 |
{ |
636 |
CPUX86State *saved_env; |
637 |
|
638 |
saved_env = env; |
639 |
env = s; |
640 |
if (!(env->cr[0] & CR0_PE_MASK) || (env->eflags & VM_MASK)) { |
641 |
selector &= 0xffff;
|
642 |
cpu_x86_load_seg_cache(env, seg_reg, selector, |
643 |
(selector << 4), 0xffff, 0); |
644 |
} else {
|
645 |
helper_load_seg(seg_reg, selector); |
646 |
} |
647 |
env = saved_env; |
648 |
} |
649 |
|
650 |
void cpu_x86_fsave(CPUX86State *s, target_ulong ptr, int data32) |
651 |
{ |
652 |
CPUX86State *saved_env; |
653 |
|
654 |
saved_env = env; |
655 |
env = s; |
656 |
|
657 |
helper_fsave(ptr, data32); |
658 |
|
659 |
env = saved_env; |
660 |
} |
661 |
|
662 |
void cpu_x86_frstor(CPUX86State *s, target_ulong ptr, int data32) |
663 |
{ |
664 |
CPUX86State *saved_env; |
665 |
|
666 |
saved_env = env; |
667 |
env = s; |
668 |
|
669 |
helper_frstor(ptr, data32); |
670 |
|
671 |
env = saved_env; |
672 |
} |
673 |
|
674 |
#endif /* TARGET_I386 */ |