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soft mmu support 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@355 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2003-08-10 21:48:43 +00:00
parent 33417e7025
commit 4cbf74b6b8
1 changed files with 23 additions and 6 deletions
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29
cpu-exec.c
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@ -245,6 +245,7 @@ int cpu_exec(CPUState *env1)
(unsigned long)env->segs[R_SS].base) != 0) << (unsigned long)env->segs[R_SS].base) != 0) <<
GEN_FLAG_ADDSEG_SHIFT; GEN_FLAG_ADDSEG_SHIFT;
flags |= env->cpl << GEN_FLAG_CPL_SHIFT; flags |= env->cpl << GEN_FLAG_CPL_SHIFT;
flags |= env->soft_mmu << GEN_FLAG_SOFT_MMU_SHIFT;
flags |= (env->eflags & VM_MASK) >> (17 - GEN_FLAG_VM_SHIFT); flags |= (env->eflags & VM_MASK) >> (17 - GEN_FLAG_VM_SHIFT);
flags |= (env->eflags & (IOPL_MASK | TF_MASK)); flags |= (env->eflags & (IOPL_MASK | TF_MASK));
cs_base = env->segs[R_CS].base; cs_base = env->segs[R_CS].base;
@ -333,6 +334,15 @@ int cpu_exec(CPUState *env1)
gen_func(); gen_func();
#endif #endif
env->current_tb = NULL; env->current_tb = NULL;
/* reset soft MMU for next block (it can currently
only be set by a memory fault) */
#if defined(TARGET_I386) && !defined(CONFIG_SOFTMMU)
if (env->soft_mmu) {
env->soft_mmu = 0;
/* do not allow linking to another block */
T0 = 0;
}
#endif
} }
} else { } else {
} }
@ -478,14 +488,21 @@ static inline int handle_cpu_signal(unsigned long pc, unsigned long address,
a virtual CPU fault */ a virtual CPU fault */
cpu_restore_state(tb, env, pc); cpu_restore_state(tb, env, pc);
} }
if (ret == 1) {
#if 0 #if 0
printf("PF exception: EIP=0x%08x CR2=0x%08x error=0x%x\n", printf("PF exception: EIP=0x%08x CR2=0x%08x error=0x%x\n",
env->eip, env->cr[2], env->error_code); env->eip, env->cr[2], env->error_code);
#endif #endif
/* we restore the process signal mask as the sigreturn should /* we restore the process signal mask as the sigreturn should
do it (XXX: use sigsetjmp) */ do it (XXX: use sigsetjmp) */
sigprocmask(SIG_SETMASK, old_set, NULL); sigprocmask(SIG_SETMASK, old_set, NULL);
raise_exception_err(EXCP0E_PAGE, env->error_code); raise_exception_err(EXCP0E_PAGE, env->error_code);
} else {
/* activate soft MMU for this block */
env->soft_mmu = 1;
sigprocmask(SIG_SETMASK, old_set, NULL);
cpu_loop_exit();
}
/* never comes here */ /* never comes here */
return 1; return 1;
} }