static int kvm_put_xsave(X86CPU *cpu) { CPUX86State *env = &cpu->env; struct kvm_xsave* xsave = env->kvm_xsave_buf; uint16_t cwd, swd, twd; int i, r; if (!kvm_has_xsave()) { return kvm_put_fpu(cpu); } memset(xsave, 0, sizeof(struct kvm_xsave)); twd = 0; swd = env->fpus & ~(7 << 11); swd |= (env->fpstt & 7) << 11; cwd = env->fpuc; for (i = 0; i < 8; ++i) { twd |= (!env->fptags[i]) << i; } xsave->region[XSAVE_FCW_FSW] = (uint32_t)(swd << 16) + cwd; xsave->region[XSAVE_FTW_FOP] = (uint32_t)(env->fpop << 16) + twd; memcpy(&xsave->region[XSAVE_CWD_RIP], &env->fpip, sizeof(env->fpip)); memcpy(&xsave->region[XSAVE_CWD_RDP], &env->fpdp, sizeof(env->fpdp)); memcpy(&xsave->region[XSAVE_ST_SPACE], env->fpregs, sizeof env->fpregs); memcpy(&xsave->region[XSAVE_XMM_SPACE], env->xmm_regs, sizeof env->xmm_regs); xsave->region[XSAVE_MXCSR] = env->mxcsr; *(uint64_t *)&xsave->region[XSAVE_XSTATE_BV] = env->xstate_bv; memcpy(&xsave->region[XSAVE_YMMH_SPACE], env->ymmh_regs, sizeof env->ymmh_regs); memcpy(&xsave->region[XSAVE_BNDREGS], env->bnd_regs, sizeof env->bnd_regs); memcpy(&xsave->region[XSAVE_BNDCSR], &env->bndcs_regs, sizeof(env->bndcs_regs)); memcpy(&xsave->region[XSAVE_OPMASK], env->opmask_regs, sizeof env->opmask_regs); memcpy(&xsave->region[XSAVE_ZMM_Hi256], env->zmmh_regs, sizeof env->zmmh_regs); #ifdef TARGET_X86_64 memcpy(&xsave->region[XSAVE_Hi16_ZMM], env->hi16_zmm_regs, sizeof env->hi16_zmm_regs); #endif r = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_XSAVE, xsave); return r; }