diff options
| author | Tao Wu <lepton@google.com> | 2018-01-10 11:50:54 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-01-16 14:54:51 +0100 |
| commit | 35b1b927514d34862e352ff83ab0cbb1439b5303 (patch) | |
| tree | 9fff52de2b4383843927406aa89f5bf1e7e246cb /target/i386/cpu.c | |
| parent | 52cb6817a715dde6bc0ba531b23c2525f298925d (diff) | |
target/i386: move hflags update code to a function
We will share the same code for hax/kvm.
Signed-off-by: Tao Wu <lepton@google.com>
Message-Id: <20180110195056.85403-1-lepton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target/i386/cpu.c')
| -rw-r--r-- | target/i386/cpu.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 3818d72831..ad8196b166 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -4147,6 +4147,48 @@ static void x86_disas_set_info(CPUState *cs, disassemble_info *info) info->cap_insn_split = 8; } +void x86_update_hflags(CPUX86State *env) +{ + uint32_t hflags; +#define HFLAG_COPY_MASK \ + ~( HF_CPL_MASK | HF_PE_MASK | HF_MP_MASK | HF_EM_MASK | \ + HF_TS_MASK | HF_TF_MASK | HF_VM_MASK | HF_IOPL_MASK | \ + HF_OSFXSR_MASK | HF_LMA_MASK | HF_CS32_MASK | \ + HF_SS32_MASK | HF_CS64_MASK | HF_ADDSEG_MASK) + + hflags = env->hflags & HFLAG_COPY_MASK; + hflags |= (env->segs[R_SS].flags >> DESC_DPL_SHIFT) & HF_CPL_MASK; + hflags |= (env->cr[0] & CR0_PE_MASK) << (HF_PE_SHIFT - CR0_PE_SHIFT); + hflags |= (env->cr[0] << (HF_MP_SHIFT - CR0_MP_SHIFT)) & + (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK); + hflags |= (env->eflags & (HF_TF_MASK | HF_VM_MASK | HF_IOPL_MASK)); + + if (env->cr[4] & CR4_OSFXSR_MASK) { + hflags |= HF_OSFXSR_MASK; + } + + if (env->efer & MSR_EFER_LMA) { + hflags |= HF_LMA_MASK; + } + + if ((hflags & HF_LMA_MASK) && (env->segs[R_CS].flags & DESC_L_MASK)) { + hflags |= HF_CS32_MASK | HF_SS32_MASK | HF_CS64_MASK; + } else { + hflags |= (env->segs[R_CS].flags & DESC_B_MASK) >> + (DESC_B_SHIFT - HF_CS32_SHIFT); + hflags |= (env->segs[R_SS].flags & DESC_B_MASK) >> + (DESC_B_SHIFT - HF_SS32_SHIFT); + if (!(env->cr[0] & CR0_PE_MASK) || (env->eflags & VM_MASK) || + !(hflags & HF_CS32_MASK)) { + hflags |= HF_ADDSEG_MASK; + } else { + hflags |= ((env->segs[R_DS].base | env->segs[R_ES].base | + env->segs[R_SS].base) != 0) << HF_ADDSEG_SHIFT; + } + } + env->hflags = hflags; +} + static Property x86_cpu_properties[] = { #ifdef CONFIG_USER_ONLY /* apic_id = 0 by default for *-user, see commit 9886e834 */ |