diff options
| author | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2003-07-26 18:01:40 +0000 |
|---|---|---|
| committer | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2003-07-26 18:01:40 +0000 |
| commit | a412ac572ffad45f663795ba7dfa8fa1603ef206 (patch) | |
| tree | 5141b46ca291e230e70c1d81f440790ea8de62be /cpu-exec.c | |
| parent | b2b5fb228f273d2c72aefce3be1f9e11e23c6c24 (diff) | |
real mode support
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@335 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'cpu-exec.c')
| -rw-r--r-- | cpu-exec.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/cpu-exec.c b/cpu-exec.c index 908f161840..1ffeb8e86c 100644 --- a/cpu-exec.c +++ b/cpu-exec.c @@ -244,12 +244,12 @@ int cpu_exec(CPUState *env1) (unsigned long)env->segs[R_ES].base | (unsigned long)env->segs[R_SS].base) != 0) << GEN_FLAG_ADDSEG_SHIFT; - if (!(env->eflags & VM_MASK)) { - flags |= (env->segs[R_CS].selector & 3) << GEN_FLAG_CPL_SHIFT; - } else { - /* NOTE: a dummy CPL is kept */ - flags |= (1 << GEN_FLAG_VM_SHIFT); - flags |= (3 << GEN_FLAG_CPL_SHIFT); + if (env->cr[0] & CR0_PE_MASK) { + if (!(env->eflags & VM_MASK)) + flags |= (env->segs[R_CS].selector & 3) << + GEN_FLAG_CPL_SHIFT; + else + flags |= (1 << GEN_FLAG_VM_SHIFT); } flags |= (env->eflags & (IOPL_MASK | TF_MASK)); cs_base = env->segs[R_CS].base; @@ -396,12 +396,10 @@ void cpu_x86_load_seg(CPUX86State *s, int seg_reg, int selector) saved_env = env; env = s; - if (env->eflags & VM_MASK) { + if (!(env->cr[0] & CR0_PE_MASK) || (env->eflags & VM_MASK)) { SegmentCache *sc; selector &= 0xffff; sc = &env->segs[seg_reg]; - /* NOTE: in VM86 mode, limit and flags are never reloaded, - so we must load them here */ sc->base = (void *)(selector << 4); sc->limit = 0xffff; sc->flags = 0; |