1 /* 2 * This work is licensed under the terms of the GNU GPL, version 2 or later. 3 * See the COPYING file in the top-level directory. 4 */ 5 #include "qemu/osdep.h" 6 7 #include "qemu-common.h" 8 #include "cpu.h" 9 10 void x86_cpu_xsave_all_areas(X86CPU *cpu, X86XSaveArea *buf) 11 { 12 CPUX86State *env = &cpu->env; 13 X86XSaveArea *xsave = buf; 14 15 uint16_t cwd, swd, twd; 16 int i; 17 memset(xsave, 0, sizeof(X86XSaveArea)); 18 twd = 0; 19 swd = env->fpus & ~(7 << 11); 20 swd |= (env->fpstt & 7) << 11; 21 cwd = env->fpuc; 22 for (i = 0; i < 8; ++i) { 23 twd |= (!env->fptags[i]) << i; 24 } 25 xsave->legacy.fcw = cwd; 26 xsave->legacy.fsw = swd; 27 xsave->legacy.ftw = twd; 28 xsave->legacy.fpop = env->fpop; 29 xsave->legacy.fpip = env->fpip; 30 xsave->legacy.fpdp = env->fpdp; 31 memcpy(&xsave->legacy.fpregs, env->fpregs, 32 sizeof env->fpregs); 33 xsave->legacy.mxcsr = env->mxcsr; 34 xsave->header.xstate_bv = env->xstate_bv; 35 memcpy(&xsave->bndreg_state.bnd_regs, env->bnd_regs, 36 sizeof env->bnd_regs); 37 xsave->bndcsr_state.bndcsr = env->bndcs_regs; 38 memcpy(&xsave->opmask_state.opmask_regs, env->opmask_regs, 39 sizeof env->opmask_regs); 40 41 for (i = 0; i < CPU_NB_REGS; i++) { 42 uint8_t *xmm = xsave->legacy.xmm_regs[i]; 43 uint8_t *ymmh = xsave->avx_state.ymmh[i]; 44 uint8_t *zmmh = xsave->zmm_hi256_state.zmm_hi256[i]; 45 stq_p(xmm, env->xmm_regs[i].ZMM_Q(0)); 46 stq_p(xmm+8, env->xmm_regs[i].ZMM_Q(1)); 47 stq_p(ymmh, env->xmm_regs[i].ZMM_Q(2)); 48 stq_p(ymmh+8, env->xmm_regs[i].ZMM_Q(3)); 49 stq_p(zmmh, env->xmm_regs[i].ZMM_Q(4)); 50 stq_p(zmmh+8, env->xmm_regs[i].ZMM_Q(5)); 51 stq_p(zmmh+16, env->xmm_regs[i].ZMM_Q(6)); 52 stq_p(zmmh+24, env->xmm_regs[i].ZMM_Q(7)); 53 } 54 55 #ifdef TARGET_X86_64 56 memcpy(&xsave->hi16_zmm_state.hi16_zmm, &env->xmm_regs[16], 57 16 * sizeof env->xmm_regs[16]); 58 memcpy(&xsave->pkru_state, &env->pkru, sizeof env->pkru); 59 #endif 60 61 } 62 63 void x86_cpu_xrstor_all_areas(X86CPU *cpu, const X86XSaveArea *buf) 64 { 65 66 CPUX86State *env = &cpu->env; 67 const X86XSaveArea *xsave = buf; 68 69 int i; 70 uint16_t cwd, swd, twd; 71 cwd = xsave->legacy.fcw; 72 swd = xsave->legacy.fsw; 73 twd = xsave->legacy.ftw; 74 env->fpop = xsave->legacy.fpop; 75 env->fpstt = (swd >> 11) & 7; 76 env->fpus = swd; 77 env->fpuc = cwd; 78 for (i = 0; i < 8; ++i) { 79 env->fptags[i] = !((twd >> i) & 1); 80 } 81 env->fpip = xsave->legacy.fpip; 82 env->fpdp = xsave->legacy.fpdp; 83 env->mxcsr = xsave->legacy.mxcsr; 84 memcpy(env->fpregs, &xsave->legacy.fpregs, 85 sizeof env->fpregs); 86 env->xstate_bv = xsave->header.xstate_bv; 87 memcpy(env->bnd_regs, &xsave->bndreg_state.bnd_regs, 88 sizeof env->bnd_regs); 89 env->bndcs_regs = xsave->bndcsr_state.bndcsr; 90 memcpy(env->opmask_regs, &xsave->opmask_state.opmask_regs, 91 sizeof env->opmask_regs); 92 93 for (i = 0; i < CPU_NB_REGS; i++) { 94 const uint8_t *xmm = xsave->legacy.xmm_regs[i]; 95 const uint8_t *ymmh = xsave->avx_state.ymmh[i]; 96 const uint8_t *zmmh = xsave->zmm_hi256_state.zmm_hi256[i]; 97 env->xmm_regs[i].ZMM_Q(0) = ldq_p(xmm); 98 env->xmm_regs[i].ZMM_Q(1) = ldq_p(xmm+8); 99 env->xmm_regs[i].ZMM_Q(2) = ldq_p(ymmh); 100 env->xmm_regs[i].ZMM_Q(3) = ldq_p(ymmh+8); 101 env->xmm_regs[i].ZMM_Q(4) = ldq_p(zmmh); 102 env->xmm_regs[i].ZMM_Q(5) = ldq_p(zmmh+8); 103 env->xmm_regs[i].ZMM_Q(6) = ldq_p(zmmh+16); 104 env->xmm_regs[i].ZMM_Q(7) = ldq_p(zmmh+24); 105 } 106 107 #ifdef TARGET_X86_64 108 memcpy(&env->xmm_regs[16], &xsave->hi16_zmm_state.hi16_zmm, 109 16 * sizeof env->xmm_regs[16]); 110 memcpy(&env->pkru, &xsave->pkru_state, sizeof env->pkru); 111 #endif 112 113 } 114