root / target-i386 / machine.c @ f80f9ec9
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#include "hw/hw.h" |
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#include "hw/boards.h" |
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#include "hw/pc.h" |
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#include "hw/isa.h" |
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|
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#include "exec-all.h" |
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|
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static void cpu_put_seg(QEMUFile *f, SegmentCache *dt) |
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{
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qemu_put_be32(f, dt->selector); |
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qemu_put_betl(f, dt->base); |
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qemu_put_be32(f, dt->limit); |
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qemu_put_be32(f, dt->flags); |
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} |
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|
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static void cpu_get_seg(QEMUFile *f, SegmentCache *dt) |
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{
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dt->selector = qemu_get_be32(f); |
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dt->base = qemu_get_betl(f); |
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dt->limit = qemu_get_be32(f); |
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dt->flags = qemu_get_be32(f); |
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} |
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|
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void cpu_save(QEMUFile *f, void *opaque) |
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{
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CPUState *env = opaque; |
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uint16_t fptag, fpus, fpuc, fpregs_format; |
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uint32_t hflags; |
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int32_t a20_mask; |
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int i;
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for(i = 0; i < CPU_NB_REGS; i++) |
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qemu_put_betls(f, &env->regs[i]); |
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qemu_put_betls(f, &env->eip); |
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qemu_put_betls(f, &env->eflags); |
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hflags = env->hflags; /* XXX: suppress most of the redundant hflags */
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qemu_put_be32s(f, &hflags); |
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|
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/* FPU */
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fpuc = env->fpuc; |
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fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
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fptag = 0;
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for(i = 0; i < 8; i++) { |
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fptag |= ((!env->fptags[i]) << i); |
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} |
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qemu_put_be16s(f, &fpuc); |
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qemu_put_be16s(f, &fpus); |
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qemu_put_be16s(f, &fptag); |
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|
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#ifdef USE_X86LDOUBLE
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fpregs_format = 0;
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#else
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fpregs_format = 1;
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#endif
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qemu_put_be16s(f, &fpregs_format); |
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for(i = 0; i < 8; i++) { |
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#ifdef USE_X86LDOUBLE
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{
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uint64_t mant; |
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uint16_t exp; |
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/* we save the real CPU data (in case of MMX usage only 'mant'
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contains the MMX register */
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cpu_get_fp80(&mant, &exp, env->fpregs[i].d); |
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qemu_put_be64(f, mant); |
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qemu_put_be16(f, exp); |
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} |
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#else
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/* if we use doubles for float emulation, we save the doubles to
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avoid losing information in case of MMX usage. It can give
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problems if the image is restored on a CPU where long
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doubles are used instead. */
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qemu_put_be64(f, env->fpregs[i].mmx.MMX_Q(0));
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#endif
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} |
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for(i = 0; i < 6; i++) |
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cpu_put_seg(f, &env->segs[i]); |
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cpu_put_seg(f, &env->ldt); |
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cpu_put_seg(f, &env->tr); |
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cpu_put_seg(f, &env->gdt); |
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cpu_put_seg(f, &env->idt); |
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|
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qemu_put_be32s(f, &env->sysenter_cs); |
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qemu_put_betls(f, &env->sysenter_esp); |
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qemu_put_betls(f, &env->sysenter_eip); |
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qemu_put_betls(f, &env->cr[0]);
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qemu_put_betls(f, &env->cr[2]);
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qemu_put_betls(f, &env->cr[3]);
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qemu_put_betls(f, &env->cr[4]);
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for(i = 0; i < 8; i++) |
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qemu_put_betls(f, &env->dr[i]); |
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/* MMU */
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a20_mask = (int32_t) env->a20_mask; |
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qemu_put_sbe32s(f, &a20_mask); |
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|
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/* XMM */
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qemu_put_be32s(f, &env->mxcsr); |
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for(i = 0; i < CPU_NB_REGS; i++) { |
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qemu_put_be64s(f, &env->xmm_regs[i].XMM_Q(0));
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qemu_put_be64s(f, &env->xmm_regs[i].XMM_Q(1));
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} |
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#ifdef TARGET_X86_64
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qemu_put_be64s(f, &env->efer); |
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qemu_put_be64s(f, &env->star); |
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qemu_put_be64s(f, &env->lstar); |
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qemu_put_be64s(f, &env->cstar); |
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qemu_put_be64s(f, &env->fmask); |
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qemu_put_be64s(f, &env->kernelgsbase); |
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#endif
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qemu_put_be32s(f, &env->smbase); |
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qemu_put_be64s(f, &env->pat); |
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qemu_put_be32s(f, &env->hflags2); |
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qemu_put_be64s(f, &env->vm_hsave); |
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qemu_put_be64s(f, &env->vm_vmcb); |
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qemu_put_be64s(f, &env->tsc_offset); |
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qemu_put_be64s(f, &env->intercept); |
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qemu_put_be16s(f, &env->intercept_cr_read); |
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qemu_put_be16s(f, &env->intercept_cr_write); |
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qemu_put_be16s(f, &env->intercept_dr_read); |
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qemu_put_be16s(f, &env->intercept_dr_write); |
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qemu_put_be32s(f, &env->intercept_exceptions); |
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qemu_put_8s(f, &env->v_tpr); |
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/* MTRRs */
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for(i = 0; i < 11; i++) |
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qemu_put_be64s(f, &env->mtrr_fixed[i]); |
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qemu_put_be64s(f, &env->mtrr_deftype); |
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for(i = 0; i < 8; i++) { |
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qemu_put_be64s(f, &env->mtrr_var[i].base); |
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qemu_put_be64s(f, &env->mtrr_var[i].mask); |
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} |
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} |
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#ifdef USE_X86LDOUBLE
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/* XXX: add that in a FPU generic layer */
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union x86_longdouble {
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uint64_t mant; |
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uint16_t exp; |
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}; |
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#define MANTD1(fp) (fp & ((1LL << 52) - 1)) |
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#define EXPBIAS1 1023 |
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#define EXPD1(fp) ((fp >> 52) & 0x7FF) |
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#define SIGND1(fp) ((fp >> 32) & 0x80000000) |
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static void fp64_to_fp80(union x86_longdouble *p, uint64_t temp) |
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{
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int e;
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/* mantissa */
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p->mant = (MANTD1(temp) << 11) | (1LL << 63); |
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/* exponent + sign */
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e = EXPD1(temp) - EXPBIAS1 + 16383;
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e |= SIGND1(temp) >> 16;
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p->exp = e; |
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} |
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#endif
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int cpu_load(QEMUFile *f, void *opaque, int version_id) |
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{
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CPUState *env = opaque; |
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int i, guess_mmx;
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uint32_t hflags; |
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uint16_t fpus, fpuc, fptag, fpregs_format; |
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int32_t a20_mask; |
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if (version_id != 3 && version_id != 4 && version_id != 5 |
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&& version_id != 6 && version_id != 7 && version_id != 8) |
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return -EINVAL;
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for(i = 0; i < CPU_NB_REGS; i++) |
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qemu_get_betls(f, &env->regs[i]); |
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qemu_get_betls(f, &env->eip); |
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qemu_get_betls(f, &env->eflags); |
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qemu_get_be32s(f, &hflags); |
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qemu_get_be16s(f, &fpuc); |
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qemu_get_be16s(f, &fpus); |
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qemu_get_be16s(f, &fptag); |
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qemu_get_be16s(f, &fpregs_format); |
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/* NOTE: we cannot always restore the FPU state if the image come
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from a host with a different 'USE_X86LDOUBLE' define. We guess
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if we are in an MMX state to restore correctly in that case. */
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guess_mmx = ((fptag == 0xff) && (fpus & 0x3800) == 0); |
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for(i = 0; i < 8; i++) { |
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uint64_t mant; |
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uint16_t exp; |
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switch(fpregs_format) {
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case 0: |
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mant = qemu_get_be64(f); |
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exp = qemu_get_be16(f); |
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#ifdef USE_X86LDOUBLE
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env->fpregs[i].d = cpu_set_fp80(mant, exp); |
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#else
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/* difficult case */
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if (guess_mmx)
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env->fpregs[i].mmx.MMX_Q(0) = mant;
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else
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env->fpregs[i].d = cpu_set_fp80(mant, exp); |
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#endif
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break;
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case 1: |
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mant = qemu_get_be64(f); |
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#ifdef USE_X86LDOUBLE
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{
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union x86_longdouble *p;
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/* difficult case */
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p = (void *)&env->fpregs[i];
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if (guess_mmx) {
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p->mant = mant; |
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p->exp = 0xffff;
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} else {
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fp64_to_fp80(p, mant); |
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} |
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} |
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#else
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env->fpregs[i].mmx.MMX_Q(0) = mant;
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#endif
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break;
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default:
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return -EINVAL;
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} |
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} |
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env->fpuc = fpuc; |
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/* XXX: restore FPU round state */
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env->fpstt = (fpus >> 11) & 7; |
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env->fpus = fpus & ~0x3800;
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fptag ^= 0xff;
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for(i = 0; i < 8; i++) { |
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env->fptags[i] = (fptag >> i) & 1;
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} |
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for(i = 0; i < 6; i++) |
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cpu_get_seg(f, &env->segs[i]); |
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cpu_get_seg(f, &env->ldt); |
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cpu_get_seg(f, &env->tr); |
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cpu_get_seg(f, &env->gdt); |
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cpu_get_seg(f, &env->idt); |
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qemu_get_be32s(f, &env->sysenter_cs); |
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if (version_id >= 7) { |
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qemu_get_betls(f, &env->sysenter_esp); |
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qemu_get_betls(f, &env->sysenter_eip); |
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} else {
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env->sysenter_esp = qemu_get_be32(f); |
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env->sysenter_eip = qemu_get_be32(f); |
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} |
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qemu_get_betls(f, &env->cr[0]);
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qemu_get_betls(f, &env->cr[2]);
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qemu_get_betls(f, &env->cr[3]);
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qemu_get_betls(f, &env->cr[4]);
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for(i = 0; i < 8; i++) |
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qemu_get_betls(f, &env->dr[i]); |
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cpu_breakpoint_remove_all(env, BP_CPU); |
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cpu_watchpoint_remove_all(env, BP_CPU); |
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for (i = 0; i < 4; i++) |
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hw_breakpoint_insert(env, i); |
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|
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/* MMU */
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qemu_get_sbe32s(f, &a20_mask); |
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env->a20_mask = a20_mask; |
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qemu_get_be32s(f, &env->mxcsr); |
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for(i = 0; i < CPU_NB_REGS; i++) { |
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qemu_get_be64s(f, &env->xmm_regs[i].XMM_Q(0));
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qemu_get_be64s(f, &env->xmm_regs[i].XMM_Q(1));
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} |
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|
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#ifdef TARGET_X86_64
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qemu_get_be64s(f, &env->efer); |
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qemu_get_be64s(f, &env->star); |
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qemu_get_be64s(f, &env->lstar); |
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qemu_get_be64s(f, &env->cstar); |
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qemu_get_be64s(f, &env->fmask); |
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qemu_get_be64s(f, &env->kernelgsbase); |
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#endif
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if (version_id >= 4) { |
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qemu_get_be32s(f, &env->smbase); |
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} |
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if (version_id >= 5) { |
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qemu_get_be64s(f, &env->pat); |
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qemu_get_be32s(f, &env->hflags2); |
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if (version_id < 6) |
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qemu_get_be32s(f, &env->halted); |
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|
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qemu_get_be64s(f, &env->vm_hsave); |
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qemu_get_be64s(f, &env->vm_vmcb); |
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qemu_get_be64s(f, &env->tsc_offset); |
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qemu_get_be64s(f, &env->intercept); |
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qemu_get_be16s(f, &env->intercept_cr_read); |
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qemu_get_be16s(f, &env->intercept_cr_write); |
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qemu_get_be16s(f, &env->intercept_dr_read); |
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qemu_get_be16s(f, &env->intercept_dr_write); |
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qemu_get_be32s(f, &env->intercept_exceptions); |
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qemu_get_8s(f, &env->v_tpr); |
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} |
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|
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if (version_id >= 8) { |
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/* MTRRs */
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for(i = 0; i < 11; i++) |
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qemu_get_be64s(f, &env->mtrr_fixed[i]); |
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qemu_get_be64s(f, &env->mtrr_deftype); |
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for(i = 0; i < 8; i++) { |
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qemu_get_be64s(f, &env->mtrr_var[i].base); |
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qemu_get_be64s(f, &env->mtrr_var[i].mask); |
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} |
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} |
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|
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/* XXX: ensure compatiblity for halted bit ? */
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/* XXX: compute redundant hflags bits */
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env->hflags = hflags; |
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tlb_flush(env, 1);
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return 0; |
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} |