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suppressed ring 0 hacks 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@275 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2003-06-25 16:12:37 +00:00
parent e2f2289897
commit 83479e770d
1 changed files with 8 additions and 15 deletions
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23
cpu-exec.c
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@ -29,8 +29,6 @@
//#define DEBUG_EXEC
//#define DEBUG_SIGNAL
/* enable it to have a fully working x86 emulator for ring 0 */
//#define RING0_HACKS
#if defined(TARGET_ARM)
/* XXX: unify with i386 target */
@ -157,13 +155,16 @@ int cpu_exec(CPUState *env1)
/* if user mode only, we simulate a fake exception
which will be hanlded outside the cpu execution
loop */
#if defined(TARGET_I386)
do_interrupt_user(env->exception_index,
env->exception_is_int,
env->error_code,
env->exception_next_eip);
#endif
ret = env->exception_index;
break;
} else {
#if defined(TARGET_I386)
/* simulate a real cpu exception. On i386, it can
trigger new exceptions, but we do not handle
double or triple faults yet. */
@ -171,6 +172,7 @@ int cpu_exec(CPUState *env1)
env->exception_is_int,
env->error_code,
env->exception_next_eip);
#endif
}
env->exception_index = -1;
}
@ -294,8 +296,6 @@ int cpu_exec(CPUState *env1)
T0 = tmp_T0;
#endif
/* see if we can patch the calling TB. XXX: remove TF test */
#ifndef RING0_HACKS
if (T0 != 0
#if defined(TARGET_I386)
&& !(env->eflags & TF_MASK)
@ -305,9 +305,8 @@ int cpu_exec(CPUState *env1)
tb_add_jump((TranslationBlock *)(T0 & ~3), T0 & 3, tb);
spin_unlock(&tb_lock);
}
#endif
tc_ptr = tb->tc_ptr;
env->current_tb = tb;
/* execute the generated code */
gen_func = (void *)tc_ptr;
#if defined(__sparc__)
@ -326,6 +325,7 @@ int cpu_exec(CPUState *env1)
#else
gen_func();
#endif
env->current_tb = NULL;
}
} else {
}
@ -381,12 +381,6 @@ int cpu_exec(CPUState *env1)
return ret;
}
void cpu_interrupt(CPUState *s)
{
s->interrupt_request = 1;
}
#if defined(TARGET_I386)
void cpu_x86_load_seg(CPUX86State *s, int seg_reg, int selector)
@ -461,9 +455,8 @@ static inline int handle_cpu_signal(unsigned long pc, unsigned long address,
TranslationBlock *tb;
int ret;
#ifdef RING0_HACKS
env = global_env; /* XXX: find a better solution */
#endif
if (cpu_single_env)
env = cpu_single_env; /* XXX: find a correct solution for multithread */
#if defined(DEBUG_SIGNAL)
printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n",
pc, address, is_write, *(unsigned long *)old_set);