diff options
Diffstat (limited to 'qemu/target-i386/mpx_helper.c')
| -rw-r--r-- | qemu/target-i386/mpx_helper.c | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/qemu/target-i386/mpx_helper.c b/qemu/target-i386/mpx_helper.c deleted file mode 100644 index 4d1785ece..000000000 --- a/qemu/target-i386/mpx_helper.c +++ /dev/null @@ -1,167 +0,0 @@ -/* - * x86 MPX helpers - * - * Copyright (c) 2015 Red Hat, Inc. - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, see <http://www.gnu.org/licenses/>. - */ - -#include "qemu/osdep.h" -#include "cpu.h" -#include "exec/helper-proto.h" -#include "exec/cpu_ldst.h" - - -void cpu_sync_bndcs_hflags(CPUX86State *env) -{ - uint32_t hflags = env->hflags; - uint32_t hflags2 = env->hflags2; - uint32_t bndcsr; - - if ((hflags & HF_CPL_MASK) == 3) { - bndcsr = env->bndcs_regs.cfgu; - } else { - bndcsr = env->msr_bndcfgs; - } - - if ((env->cr[4] & CR4_OSXSAVE_MASK) - && (env->xcr0 & XSTATE_BNDCSR_MASK) - && (bndcsr & BNDCFG_ENABLE)) { - hflags |= HF_MPX_EN_MASK; - } else { - hflags &= ~HF_MPX_EN_MASK; - } - - if (bndcsr & BNDCFG_BNDPRESERVE) { - hflags2 |= HF2_MPX_PR_MASK; - } else { - hflags2 &= ~HF2_MPX_PR_MASK; - } - - env->hflags = hflags; - env->hflags2 = hflags2; -} - -void helper_bndck(CPUX86State *env, uint32_t fail) -{ - if (unlikely(fail)) { - env->bndcs_regs.sts = 1; - raise_exception_ra(env, EXCP05_BOUND, GETPC()); - } -} - -static uint64_t lookup_bte64(CPUX86State *env, uint64_t base, uintptr_t ra) -{ - uint64_t bndcsr, bde, bt; - - if ((env->hflags & HF_CPL_MASK) == 3) { - bndcsr = env->bndcs_regs.cfgu; - } else { - bndcsr = env->msr_bndcfgs; - } - - bde = (extract64(base, 20, 28) << 3) + (extract64(bndcsr, 20, 44) << 12); - bt = cpu_ldq_data_ra(env, bde, ra); - if ((bt & 1) == 0) { - env->bndcs_regs.sts = bde | 2; - raise_exception_ra(env, EXCP05_BOUND, ra); - } - - return (extract64(base, 3, 17) << 5) + (bt & ~7); -} - -static uint32_t lookup_bte32(CPUX86State *env, uint32_t base, uintptr_t ra) -{ - uint32_t bndcsr, bde, bt; - - if ((env->hflags & HF_CPL_MASK) == 3) { - bndcsr = env->bndcs_regs.cfgu; - } else { - bndcsr = env->msr_bndcfgs; - } - - bde = (extract32(base, 12, 20) << 2) + (bndcsr & TARGET_PAGE_MASK); - bt = cpu_ldl_data_ra(env, bde, ra); - if ((bt & 1) == 0) { - env->bndcs_regs.sts = bde | 2; - raise_exception_ra(env, EXCP05_BOUND, ra); - } - - return (extract32(base, 2, 10) << 4) + (bt & ~3); -} - -uint64_t helper_bndldx64(CPUX86State *env, target_ulong base, target_ulong ptr) -{ - uintptr_t ra = GETPC(); - uint64_t bte, lb, ub, pt; - - bte = lookup_bte64(env, base, ra); - lb = cpu_ldq_data_ra(env, bte, ra); - ub = cpu_ldq_data_ra(env, bte + 8, ra); - pt = cpu_ldq_data_ra(env, bte + 16, ra); - - if (pt != ptr) { - lb = ub = 0; - } - env->mmx_t0.MMX_Q(0) = ub; - return lb; -} - -uint64_t helper_bndldx32(CPUX86State *env, target_ulong base, target_ulong ptr) -{ - uintptr_t ra = GETPC(); - uint32_t bte, lb, ub, pt; - - bte = lookup_bte32(env, base, ra); - lb = cpu_ldl_data_ra(env, bte, ra); - ub = cpu_ldl_data_ra(env, bte + 4, ra); - pt = cpu_ldl_data_ra(env, bte + 8, ra); - - if (pt != ptr) { - lb = ub = 0; - } - return ((uint64_t)ub << 32) | lb; -} - -void helper_bndstx64(CPUX86State *env, target_ulong base, target_ulong ptr, - uint64_t lb, uint64_t ub) -{ - uintptr_t ra = GETPC(); - uint64_t bte; - - bte = lookup_bte64(env, base, ra); - cpu_stq_data_ra(env, bte, lb, ra); - cpu_stq_data_ra(env, bte + 8, ub, ra); - cpu_stq_data_ra(env, bte + 16, ptr, ra); -} - -void helper_bndstx32(CPUX86State *env, target_ulong base, target_ulong ptr, - uint64_t lb, uint64_t ub) -{ - uintptr_t ra = GETPC(); - uint32_t bte; - - bte = lookup_bte32(env, base, ra); - cpu_stl_data_ra(env, bte, lb, ra); - cpu_stl_data_ra(env, bte + 4, ub, ra); - cpu_stl_data_ra(env, bte + 8, ptr, ra); -} - -void helper_bnd_jmp(CPUX86State *env) -{ - if (!(env->hflags2 & HF2_MPX_PR_MASK)) { - memset(env->bnd_regs, 0, sizeof(env->bnd_regs)); - env->hflags &= ~HF_MPX_IU_MASK; - } -} |