| /* |
| * Copyright (c) 2011-2013,2017-2020 ARM Limited |
| * All rights reserved |
| * |
| * The license below extends only to copyright in the software and shall |
| * not be construed as granting a license to any other intellectual |
| * property including but not limited to intellectual property relating |
| * to a hardware implementation of the functionality of the software |
| * licensed hereunder. You may use the software subject to the license |
| * terms below provided that you ensure that this notice is replicated |
| * unmodified and in its entirety in all distributions of the software, |
| * modified or unmodified, in source code or in binary form. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer; |
| * redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution; |
| * neither the name of the copyright holders nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "arch/arm/insts/misc64.hh" |
| #include "arch/arm/isa.hh" |
| |
| namespace gem5 |
| { |
| |
| using namespace ArmISA; |
| |
| std::string |
| ImmOp64::generateDisassembly(Addr pc, const loader::SymbolTable *symtab) const |
| { |
| std::stringstream ss; |
| printMnemonic(ss, "", false); |
| ccprintf(ss, "#0x%x", imm); |
| return ss.str(); |
| } |
| |
| std::string |
| RegRegImmImmOp64::generateDisassembly( |
| Addr pc, const loader::SymbolTable *symtab) const |
| { |
| std::stringstream ss; |
| printMnemonic(ss, "", false); |
| printIntReg(ss, dest); |
| ss << ", "; |
| printIntReg(ss, op1); |
| ccprintf(ss, ", #%d, #%d", imm1, imm2); |
| return ss.str(); |
| } |
| |
| std::string |
| RegRegRegImmOp64::generateDisassembly( |
| Addr pc, const loader::SymbolTable *symtab) const |
| { |
| std::stringstream ss; |
| printMnemonic(ss, "", false); |
| printIntReg(ss, dest); |
| ss << ", "; |
| printIntReg(ss, op1); |
| ss << ", "; |
| printIntReg(ss, op2); |
| ccprintf(ss, ", #%d", imm); |
| return ss.str(); |
| } |
| |
| std::string |
| UnknownOp64::generateDisassembly( |
| Addr pc, const loader::SymbolTable *symtab) const |
| { |
| return csprintf("%-10s (inst %#08x)", "unknown", encoding()); |
| } |
| |
| Fault |
| MiscRegOp64::trap(ThreadContext *tc, MiscRegIndex misc_reg, |
| ExceptionLevel el, uint32_t immediate) const |
| { |
| ExceptionClass ec = EC_TRAPPED_MSR_MRS_64; |
| |
| // Check for traps to supervisor (FP/SIMD regs) |
| if (el <= EL1 && checkEL1Trap(tc, misc_reg, el, ec, immediate)) { |
| return std::make_shared<SupervisorTrap>(machInst, immediate, ec); |
| } |
| |
| // Check for traps to hypervisor |
| if ((ArmSystem::haveEL(tc, EL2) && el <= EL2) && |
| checkEL2Trap(tc, misc_reg, el, ec, immediate)) { |
| return std::make_shared<HypervisorTrap>(machInst, immediate, ec); |
| } |
| |
| // Check for traps to secure monitor |
| if ((ArmSystem::haveEL(tc, EL3) && el <= EL3) && |
| checkEL3Trap(tc, misc_reg, el, ec, immediate)) { |
| return std::make_shared<SecureMonitorTrap>(machInst, immediate, ec); |
| } |
| |
| return NoFault; |
| } |
| |
| bool |
| MiscRegOp64::checkEL1Trap(ThreadContext *tc, const MiscRegIndex misc_reg, |
| ExceptionLevel el, ExceptionClass &ec, |
| uint32_t &immediate) const |
| { |
| const CPACR cpacr = tc->readMiscReg(MISCREG_CPACR_EL1); |
| const SCR scr = tc->readMiscReg(MISCREG_SCR_EL3); |
| const SCTLR sctlr = tc->readMiscReg(MISCREG_SCTLR_EL1); |
| const HCR hcr = tc->readMiscReg(MISCREG_HCR_EL2); |
| |
| bool trap_to_sup = false; |
| switch (misc_reg) { |
| case MISCREG_DAIF: |
| trap_to_sup = !scr.ns && !scr.eel2 && !sctlr.uma && el == EL0; |
| trap_to_sup = trap_to_sup || |
| (el == EL0 && (scr.ns || scr.eel2) && !hcr.tge && !sctlr.uma); |
| break; |
| case MISCREG_DC_ZVA_Xt: |
| // In syscall-emulation mode, this test is skipped and DCZVA is always |
| // allowed at EL0 |
| trap_to_sup = el == EL0 && !sctlr.dze && FullSystem; |
| break; |
| case MISCREG_DC_CIVAC_Xt: |
| case MISCREG_DC_CVAC_Xt: |
| trap_to_sup = el == EL0 && !sctlr.uci; |
| break; |
| case MISCREG_FPCR: |
| case MISCREG_FPSR: |
| case MISCREG_FPEXC32_EL2: |
| if ((el == EL0 && cpacr.fpen != 0x3) || |
| (el == EL1 && !(cpacr.fpen & 0x1))) { |
| trap_to_sup = true; |
| ec = EC_TRAPPED_SIMD_FP; |
| immediate = 0x1E00000; |
| } |
| break; |
| case MISCREG_DC_CVAU_Xt: |
| trap_to_sup = !sctlr.uci && (!hcr.tge || (!scr.ns && !scr.eel2)) && |
| el == EL0; |
| break; |
| case MISCREG_CTR_EL0: |
| trap_to_sup = el == EL0 && !sctlr.uct && |
| (!hcr.tge || (!scr.ns && !scr.eel2)); |
| break; |
| case MISCREG_MDCCSR_EL0: |
| { |
| DBGDS32 mdscr = tc->readMiscReg(MISCREG_MDSCR_EL1); |
| trap_to_sup = el == EL0 && mdscr.tdcc && |
| (hcr.tge == 0x0 || ( scr.ns == 0x0)); |
| } |
| break; |
| case MISCREG_ZCR_EL1: |
| trap_to_sup = el == EL1 && ((cpacr.zen & 0x1) == 0x0); |
| break; |
| // Generic Timer |
| case MISCREG_CNTFRQ_EL0 ... MISCREG_CNTVOFF_EL2: |
| trap_to_sup = el == EL0 && |
| isGenericTimerSystemAccessTrapEL1(misc_reg, tc); |
| break; |
| default: |
| break; |
| } |
| return trap_to_sup; |
| } |
| |
| bool |
| MiscRegOp64::checkEL2Trap(ThreadContext *tc, const MiscRegIndex misc_reg, |
| ExceptionLevel el, ExceptionClass &ec, |
| uint32_t &immediate) const |
| { |
| const CPTR cptr = tc->readMiscReg(MISCREG_CPTR_EL2); |
| const SCTLR sctlr = tc->readMiscReg(MISCREG_SCTLR_EL1); |
| const SCTLR sctlr2 = tc->readMiscReg(MISCREG_SCTLR_EL2); |
| const HCR hcr = tc->readMiscReg(MISCREG_HCR_EL2); |
| const SCR scr = tc->readMiscReg(MISCREG_SCR_EL3); |
| const HDCR mdcr = tc->readMiscReg(MISCREG_MDCR_EL3); |
| |
| bool trap_to_hyp = false; |
| |
| switch (misc_reg) { |
| case MISCREG_IMPDEF_UNIMPL: |
| trap_to_hyp = EL2Enabled(tc) && hcr.tidcp && el == EL1; |
| break; |
| // GICv3 regs |
| case MISCREG_ICC_SGI0R_EL1: |
| { |
| auto *isa = static_cast<ArmISA::ISA *>(tc->getIsaPtr()); |
| if (isa->haveGICv3CpuIfc()) |
| trap_to_hyp = EL2Enabled(tc) && hcr.fmo && el == EL1; |
| } |
| break; |
| case MISCREG_ICC_SGI1R_EL1: |
| case MISCREG_ICC_ASGI1R_EL1: |
| { |
| auto *isa = static_cast<ArmISA::ISA *>(tc->getIsaPtr()); |
| if (isa->haveGICv3CpuIfc()) |
| trap_to_hyp = EL2Enabled(tc) && hcr.imo && el == EL1; |
| } |
| break; |
| case MISCREG_FPCR: |
| case MISCREG_FPSR: |
| case MISCREG_FPEXC32_EL2: |
| { |
| bool from_el2 = (el == EL2) && (scr.ns || scr.eel2) && |
| ELIs64(tc,EL2) && |
| ((!hcr.e2h && cptr.tfp) || |
| (hcr.e2h && (cptr.fpen == 0x0 || |
| cptr.fpen == 0xa))); |
| bool from_el1 = (el == EL1) && hcr.nv && |
| (!hcr.e2h || (hcr.e2h && !hcr.tge)); |
| trap_to_hyp = from_el2 || from_el1; |
| ec = EC_TRAPPED_SIMD_FP; |
| immediate = 0x1E00000; |
| } |
| break; |
| case MISCREG_CPACR_EL1: |
| trap_to_hyp = EL2Enabled(tc) && (el == EL1) && cptr.tcpac; |
| break; |
| case MISCREG_SCTLR_EL1: |
| case MISCREG_TTBR0_EL1: |
| case MISCREG_TTBR1_EL1: |
| case MISCREG_TCR_EL1: |
| case MISCREG_ESR_EL1: |
| case MISCREG_FAR_EL1: |
| case MISCREG_AFSR0_EL1: |
| case MISCREG_AFSR1_EL1: |
| case MISCREG_MAIR_EL1: |
| case MISCREG_AMAIR_EL1: |
| case MISCREG_CONTEXTIDR_EL1: |
| { |
| bool tvm = miscRead? hcr.trvm: hcr.tvm; |
| trap_to_hyp = EL2Enabled(tc) && (el == EL1) && tvm; |
| } |
| break; |
| case MISCREG_CPACR_EL12: |
| case MISCREG_SCTLR_EL12: |
| case MISCREG_TTBR0_EL12: |
| case MISCREG_TTBR1_EL12: |
| case MISCREG_TCR_EL12: |
| case MISCREG_ESR_EL12: |
| case MISCREG_FAR_EL12: |
| case MISCREG_AFSR0_EL12: |
| case MISCREG_AFSR1_EL12: |
| case MISCREG_MAIR_EL12: |
| case MISCREG_AMAIR_EL12: |
| case MISCREG_CONTEXTIDR_EL12: |
| case MISCREG_SPSR_EL12: |
| case MISCREG_ELR_EL12: |
| case MISCREG_VBAR_EL12: |
| trap_to_hyp = EL2Enabled(tc) && (el == EL1) && |
| (hcr.nv && (hcr.nv1 || !hcr.nv2)); |
| break; |
| case MISCREG_TLBI_VMALLE1: |
| case MISCREG_TLBI_VAE1_Xt: |
| case MISCREG_TLBI_ASIDE1_Xt: |
| case MISCREG_TLBI_VAAE1_Xt: |
| case MISCREG_TLBI_VALE1_Xt: |
| case MISCREG_TLBI_VAALE1_Xt: |
| // case MISCREG_TLBI_RVAE1: |
| // case MISCREG_TLBI_RVAAE1: |
| // case MISCREG_TLBI_RVALE1: |
| // case MISCREG_TLBI_RVAALE1: |
| case MISCREG_TLBI_VMALLE1IS: |
| case MISCREG_TLBI_VAE1IS_Xt: |
| case MISCREG_TLBI_ASIDE1IS_Xt: |
| case MISCREG_TLBI_VAAE1IS_Xt: |
| case MISCREG_TLBI_VALE1IS_Xt: |
| case MISCREG_TLBI_VAALE1IS_Xt: |
| // case MISCREG_TLBI_RVAE1IS: |
| // case MISCREG_TLBI_RVAAE1IS: |
| // case MISCREG_TLBI_RVALE1IS: |
| // case MISCREG_TLBI_RVAALE1IS: |
| // case MISCREG_TLBI_VMALLE1OS: |
| // case MISCREG_TLBI_VAE1OS: |
| // case MISCREG_TLBI_ASIDE1OS: |
| // case MISCREG_TLBI_VAAE1OS: |
| // case MISCREG_TLBI_VALE1OS: |
| // case MISCREG_TLBI_VAALE1OS: |
| // case MISCREG_TLBI_RVAE1OS: |
| // case MISCREG_TLBI_RVAAE1OS: |
| // case MISCREG_TLBI_RVALE1OS: |
| // case MISCREG_TLBI_RVAALE1OS: |
| trap_to_hyp = EL2Enabled(tc) && (el == EL1) && hcr.ttlb; |
| break; |
| case MISCREG_IC_IVAU_Xt: |
| case MISCREG_ICIALLU: |
| case MISCREG_ICIALLUIS: |
| trap_to_hyp = (el == EL1) && EL2Enabled(tc) && hcr.tpu; |
| break; |
| case MISCREG_DC_CVAU_Xt: |
| { |
| const bool el2_en = EL2Enabled(tc); |
| if (el == EL0 && el2_en) { |
| const bool in_host = hcr.e2h && hcr.tge; |
| const bool general_trap = el2_en && !in_host && hcr.tge && |
| !sctlr.uci; |
| const bool tpu_trap = el2_en && !in_host && hcr.tpu; |
| const bool host_trap = el2_en && in_host && !sctlr2.uci; |
| trap_to_hyp = general_trap || tpu_trap || host_trap; |
| } |
| else if (el == EL1 && el2_en) { |
| trap_to_hyp = hcr.tpu; |
| } |
| } |
| break; |
| case MISCREG_DC_IVAC_Xt: |
| trap_to_hyp = EL2Enabled(tc) && el == EL1 && hcr.tpc; |
| break; |
| case MISCREG_DC_CVAC_Xt: |
| // case MISCREG_DC_CVAP_Xt: |
| case MISCREG_DC_CIVAC_Xt: |
| { |
| const bool el2_en = EL2Enabled(tc); |
| if (el == EL0 && el2_en) { |
| |
| const bool in_host = hcr.e2h && hcr.tge; |
| const bool general_trap = el2_en && !in_host && hcr.tge && |
| !sctlr.uci; |
| const bool tpc_trap = el2_en && !in_host && hcr.tpc; |
| const bool host_trap = el2_en && in_host && !sctlr2.uci; |
| trap_to_hyp = general_trap || tpc_trap || host_trap; |
| } else if (el == EL1 && el2_en) { |
| trap_to_hyp = hcr.tpc; |
| } |
| } |
| break; |
| case MISCREG_DC_ISW_Xt: |
| case MISCREG_DC_CSW_Xt: |
| case MISCREG_DC_CISW_Xt: |
| trap_to_hyp = EL2Enabled(tc) && (el == EL1) && hcr.tsw; |
| break; |
| case MISCREG_ACTLR_EL1: |
| trap_to_hyp = EL2Enabled (tc) && (el == EL1) && hcr.tacr; |
| break; |
| case MISCREG_APDAKeyHi_EL1: |
| case MISCREG_APDAKeyLo_EL1: |
| case MISCREG_APDBKeyHi_EL1: |
| case MISCREG_APDBKeyLo_EL1: |
| case MISCREG_APGAKeyHi_EL1: |
| case MISCREG_APGAKeyLo_EL1: |
| case MISCREG_APIAKeyHi_EL1: |
| case MISCREG_APIAKeyLo_EL1: |
| case MISCREG_APIBKeyHi_EL1: |
| case MISCREG_APIBKeyLo_EL1: |
| trap_to_hyp = EL2Enabled(tc) && el == EL1 && !hcr.apk; |
| break; |
| case MISCREG_ID_PFR0_EL1: |
| case MISCREG_ID_PFR1_EL1: |
| //case MISCREG_ID_PFR2_EL1: |
| case MISCREG_ID_DFR0_EL1: |
| case MISCREG_ID_AFR0_EL1: |
| case MISCREG_ID_MMFR0_EL1: |
| case MISCREG_ID_MMFR1_EL1: |
| case MISCREG_ID_MMFR2_EL1: |
| case MISCREG_ID_MMFR3_EL1: |
| case MISCREG_ID_MMFR4_EL1: |
| case MISCREG_ID_ISAR0_EL1: |
| case MISCREG_ID_ISAR1_EL1: |
| case MISCREG_ID_ISAR2_EL1: |
| case MISCREG_ID_ISAR3_EL1: |
| case MISCREG_ID_ISAR4_EL1: |
| case MISCREG_ID_ISAR5_EL1: |
| case MISCREG_ID_ISAR6_EL1: |
| case MISCREG_MVFR0_EL1: |
| case MISCREG_MVFR1_EL1: |
| case MISCREG_MVFR2_EL1: |
| case MISCREG_ID_AA64PFR0_EL1: |
| case MISCREG_ID_AA64PFR1_EL1: |
| case MISCREG_ID_AA64DFR0_EL1: |
| case MISCREG_ID_AA64DFR1_EL1: |
| case MISCREG_ID_AA64ISAR0_EL1: |
| case MISCREG_ID_AA64ISAR1_EL1: |
| case MISCREG_ID_AA64MMFR0_EL1: |
| case MISCREG_ID_AA64MMFR1_EL1: |
| case MISCREG_ID_AA64MMFR2_EL1: |
| case MISCREG_ID_AA64AFR0_EL1: |
| case MISCREG_ID_AA64AFR1_EL1: |
| trap_to_hyp = EL2Enabled(tc) && el == EL1 && hcr.tid3; |
| break; |
| case MISCREG_CTR_EL0: |
| { |
| const bool el2_en = EL2Enabled(tc); |
| if (el == EL0 && el2_en) { |
| const bool in_host = hcr.e2h && hcr.tge; |
| const bool general_trap = el2_en && !in_host && hcr.tge && |
| !sctlr.uct; |
| const bool tid_trap = el2_en && !in_host && hcr.tid2; |
| const bool host_trap = el2_en && in_host && !sctlr2.uct; |
| trap_to_hyp = general_trap || tid_trap || host_trap; |
| } else if (el == EL1 && el2_en) { |
| trap_to_hyp = hcr.tid2; |
| } |
| } |
| break; |
| case MISCREG_CCSIDR_EL1: |
| // case MISCREG_CCSIDR2_EL1: |
| case MISCREG_CLIDR_EL1: |
| case MISCREG_CSSELR_EL1: |
| trap_to_hyp = EL2Enabled(tc) && (el == EL1) && hcr.tid2; |
| break; |
| case MISCREG_AIDR_EL1: |
| case MISCREG_REVIDR_EL1: |
| trap_to_hyp = EL2Enabled(tc) && (el == EL1) && hcr.tid1; |
| break; |
| // Generic Timer |
| case MISCREG_CNTFRQ_EL0 ... MISCREG_CNTVOFF_EL2: |
| trap_to_hyp = EL2Enabled(tc) && el <= EL1 && |
| isGenericTimerSystemAccessTrapEL2(misc_reg, tc); |
| break; |
| case MISCREG_DAIF: |
| trap_to_hyp = EL2Enabled(tc) && el == EL0 && |
| (hcr.tge && (hcr.e2h || !sctlr.uma)); |
| break; |
| case MISCREG_SPSR_EL1: |
| case MISCREG_ELR_EL1: |
| case MISCREG_VBAR_EL1: |
| trap_to_hyp = EL2Enabled(tc) && (el == EL1) && hcr.nv1 && !hcr.nv2; |
| break; |
| case MISCREG_HCR_EL2: |
| case MISCREG_HSTR_EL2: |
| case MISCREG_SP_EL1: |
| case MISCREG_TPIDR_EL2: |
| case MISCREG_VTCR_EL2: |
| case MISCREG_VTTBR_EL2: |
| trap_to_hyp = EL2Enabled(tc) && (el == EL1) && hcr.nv && !hcr.nv2; |
| break; |
| // case MISCREG_AT_S1E1WP_Xt: |
| // case MISCREG_AT_S1E1RP_Xt: |
| case MISCREG_AT_S1E1R_Xt: |
| case MISCREG_AT_S1E1W_Xt: |
| case MISCREG_AT_S1E0W_Xt: |
| case MISCREG_AT_S1E0R_Xt: |
| trap_to_hyp = EL2Enabled(tc) && (el == EL1) && hcr.at; |
| break; |
| case MISCREG_ACTLR_EL2: |
| case MISCREG_AFSR0_EL2: |
| case MISCREG_AFSR1_EL2: |
| case MISCREG_AMAIR_EL2: |
| case MISCREG_CONTEXTIDR_EL2: |
| case MISCREG_CPTR_EL2: |
| case MISCREG_DACR32_EL2: |
| case MISCREG_ESR_EL2: |
| case MISCREG_FAR_EL2: |
| case MISCREG_HACR_EL2: |
| case MISCREG_HPFAR_EL2: |
| case MISCREG_MAIR_EL2: |
| // case MISCREG_RMR_EL2: |
| case MISCREG_SCTLR_EL2: |
| case MISCREG_TCR_EL2: |
| case MISCREG_TTBR0_EL2: |
| case MISCREG_TTBR1_EL2: |
| case MISCREG_VBAR_EL2: |
| case MISCREG_VMPIDR_EL2: |
| case MISCREG_VPIDR_EL2: |
| case MISCREG_TLBI_ALLE1: |
| case MISCREG_TLBI_ALLE1IS: |
| // case MISCREG_TLBI_ALLE1OS: |
| case MISCREG_TLBI_ALLE2: |
| case MISCREG_TLBI_ALLE2IS: |
| // case MISCREG_TLBI_ALLE2OS: |
| case MISCREG_TLBI_IPAS2E1_Xt: |
| case MISCREG_TLBI_IPAS2E1IS_Xt: |
| // case MISCREG_TLBI_IPAS2E1OS: |
| case MISCREG_TLBI_IPAS2LE1_Xt: |
| case MISCREG_TLBI_IPAS2LE1IS_Xt: |
| // case MISCREG_TLBI_IPAS2LE1OS: |
| // case MISCREG_TLBI_RIPAS2E1: |
| // case MISCREG_TLBI_RIPAS2E1IS: |
| // case MISCREG_TLBI_RIPAS2E1OS: |
| // case MISCREG_TLBI_RIPAS2LE1: |
| // case MISCREG_TLBI_RIPAS2LE1IS: |
| // case MISCREG_TLBI_RIPAS2LE1OS: |
| // case MISCREG_TLBI_RVAE2: |
| // case MISCREG_TLBI_RVAE2IS: |
| // case MISCREG_TLBI_RVAE2OS: |
| // case MISCREG_TLBI_RVALE2: |
| // case MISCREG_TLBI_RVALE2IS: |
| // case MISCREG_TLBI_RVALE2OS: |
| case MISCREG_TLBI_VAE2_Xt: |
| case MISCREG_TLBI_VAE2IS_Xt: |
| // case MISCREG_TLBI_VAE2OS: |
| case MISCREG_TLBI_VALE2_Xt: |
| case MISCREG_TLBI_VALE2IS_Xt: |
| // case MISCREG_TLBI_VALE2OS: |
| case MISCREG_TLBI_VMALLS12E1: |
| case MISCREG_TLBI_VMALLS12E1IS: |
| // case MISCREG_TLBI_VMALLS12E1OS: |
| case MISCREG_AT_S1E2W_Xt: |
| case MISCREG_AT_S1E2R_Xt: |
| case MISCREG_AT_S12E1R_Xt: |
| case MISCREG_AT_S12E1W_Xt: |
| case MISCREG_AT_S12E0W_Xt: |
| case MISCREG_AT_S12E0R_Xt: |
| case MISCREG_SPSR_UND: |
| case MISCREG_SPSR_IRQ: |
| case MISCREG_SPSR_FIQ: |
| case MISCREG_SPSR_ABT: |
| case MISCREG_SPSR_EL2: |
| case MISCREG_ELR_EL2: |
| case MISCREG_IFSR32_EL2: |
| case MISCREG_DBGVCR32_EL2: |
| case MISCREG_MDCR_EL2: |
| trap_to_hyp = EL2Enabled(tc) && (el == EL1) && hcr.nv; |
| break; |
| // case MISCREG_VSTTBR_EL2: |
| // case MISCREG_VSTCR_EL2: |
| // trap_to_hyp = (el == EL1) && !scr.ns && scr.eel2 && ELIs64(tc,EL2) |
| // && !hcr.nv2 && hcr.nv && (!hcr.e2h|| (hcr.e2h && !hcr.tge)); |
| // break; |
| |
| //case MISCREG_LORC_EL1: |
| //case MISCREG_LOREA_EL1: |
| //case MISCREG_LORID_EL1: |
| //case MISCREG_LORN_EL1: |
| //case MISCREG_LORSA_EL1: |
| // trap_to_hyp = (el == EL1) && (scr.ns || scr.eel2) && ELIs64(tc,EL2) |
| // && hcr.tlor && (!hcr.e2h || (hcr.e2h && !hcr.tge)); |
| // break; |
| |
| case MISCREG_DC_ZVA_Xt: |
| { |
| const bool el2_en = EL2Enabled(tc); |
| if (el == EL0 && el2_en) { |
| const bool in_host = hcr.e2h && hcr.tge; |
| const bool general_trap = el2_en && !in_host && hcr.tge && |
| !sctlr.dze; |
| const bool tdz_trap = el2_en && !in_host && hcr.tdz; |
| const bool host_trap = el2_en && in_host && !sctlr2.dze; |
| trap_to_hyp = general_trap || tdz_trap || host_trap; |
| } else if (el == EL1 && el2_en) { |
| trap_to_hyp = hcr.tdz; |
| } |
| } |
| break; |
| case MISCREG_DBGBVR0_EL1: |
| case MISCREG_DBGBVR1_EL1: |
| case MISCREG_DBGBVR2_EL1: |
| case MISCREG_DBGBVR3_EL1: |
| case MISCREG_DBGBVR4_EL1: |
| case MISCREG_DBGBVR5_EL1: |
| case MISCREG_DBGBVR6_EL1: |
| case MISCREG_DBGBVR7_EL1: |
| case MISCREG_DBGBVR8_EL1: |
| case MISCREG_DBGBVR9_EL1: |
| case MISCREG_DBGBVR10_EL1: |
| case MISCREG_DBGBVR11_EL1: |
| case MISCREG_DBGBVR12_EL1: |
| case MISCREG_DBGBVR13_EL1: |
| case MISCREG_DBGBVR14_EL1: |
| case MISCREG_DBGBVR15_EL1: |
| case MISCREG_DBGBCR0_EL1: |
| case MISCREG_DBGBCR1_EL1: |
| case MISCREG_DBGBCR2_EL1: |
| case MISCREG_DBGBCR3_EL1: |
| case MISCREG_DBGBCR4_EL1: |
| case MISCREG_DBGBCR5_EL1: |
| case MISCREG_DBGBCR6_EL1: |
| case MISCREG_DBGBCR7_EL1: |
| case MISCREG_DBGBCR8_EL1: |
| case MISCREG_DBGBCR9_EL1: |
| case MISCREG_DBGBCR10_EL1: |
| case MISCREG_DBGBCR11_EL1: |
| case MISCREG_DBGBCR12_EL1: |
| case MISCREG_DBGBCR13_EL1: |
| case MISCREG_DBGBCR14_EL1: |
| case MISCREG_DBGBCR15_EL1: |
| case MISCREG_DBGWVR0_EL1: |
| case MISCREG_DBGWVR1_EL1: |
| case MISCREG_DBGWVR2_EL1: |
| case MISCREG_DBGWVR3_EL1: |
| case MISCREG_DBGWVR4_EL1: |
| case MISCREG_DBGWVR5_EL1: |
| case MISCREG_DBGWVR6_EL1: |
| case MISCREG_DBGWVR7_EL1: |
| case MISCREG_DBGWVR8_EL1: |
| case MISCREG_DBGWVR9_EL1: |
| case MISCREG_DBGWVR10_EL1: |
| case MISCREG_DBGWVR11_EL1: |
| case MISCREG_DBGWVR12_EL1: |
| case MISCREG_DBGWVR13_EL1: |
| case MISCREG_DBGWVR14_EL1: |
| case MISCREG_DBGWVR15_EL1: |
| case MISCREG_DBGWCR0_EL1: |
| case MISCREG_DBGWCR1_EL1: |
| case MISCREG_DBGWCR2_EL1: |
| case MISCREG_DBGWCR3_EL1: |
| case MISCREG_DBGWCR4_EL1: |
| case MISCREG_DBGWCR5_EL1: |
| case MISCREG_DBGWCR6_EL1: |
| case MISCREG_DBGWCR7_EL1: |
| case MISCREG_DBGWCR8_EL1: |
| case MISCREG_DBGWCR9_EL1: |
| case MISCREG_DBGWCR10_EL1: |
| case MISCREG_DBGWCR11_EL1: |
| case MISCREG_DBGWCR12_EL1: |
| case MISCREG_DBGWCR13_EL1: |
| case MISCREG_DBGWCR14_EL1: |
| case MISCREG_DBGWCR15_EL1: |
| case MISCREG_MDCCINT_EL1: |
| trap_to_hyp = EL2Enabled(tc) && (el == EL1) && mdcr.tda; |
| break; |
| case MISCREG_ZCR_EL1: |
| { |
| bool from_el1 = (el == EL1) && EL2Enabled(tc) && |
| ELIs64(tc, EL2) && ((!hcr.e2h && cptr.tz) || |
| (hcr.e2h && ((cptr.zen & 0x1) == 0x0))); |
| bool from_el2 = (el == EL2) && ((!hcr.e2h && cptr.tz) || |
| (hcr.e2h && ((cptr.zen & 0x1) == 0x0))); |
| trap_to_hyp = from_el1 || from_el2; |
| } |
| ec = EC_TRAPPED_SVE; |
| immediate = 0; |
| break; |
| case MISCREG_ZCR_EL2: |
| { |
| bool from_el1 = (el == EL1) && EL2Enabled(tc) && hcr.nv; |
| bool from_el2 = (el == EL2) && ((!hcr.e2h && cptr.tz) || |
| (hcr.e2h && ((cptr.zen & 0x1) == 0x0))); |
| trap_to_hyp = from_el1 || from_el2; |
| ec = from_el1 ? EC_TRAPPED_MSR_MRS_64: EC_TRAPPED_SVE; |
| } |
| immediate = 0; |
| break; |
| default: |
| break; |
| } |
| return trap_to_hyp; |
| } |
| |
| bool |
| MiscRegOp64::checkEL3Trap(ThreadContext *tc, const MiscRegIndex misc_reg, |
| ExceptionLevel el, ExceptionClass &ec, |
| uint32_t &immediate) const |
| { |
| const CPTR cptr = tc->readMiscReg(MISCREG_CPTR_EL3); |
| const SCR scr = tc->readMiscReg(MISCREG_SCR_EL3); |
| const HDCR mdcr = tc->readMiscReg(MISCREG_MDCR_EL3); |
| const HCR hcr = tc->readMiscReg(MISCREG_HCR_EL2); |
| bool trap_to_mon = false; |
| |
| switch (misc_reg) { |
| // FP/SIMD regs |
| case MISCREG_FPCR: |
| case MISCREG_FPSR: |
| case MISCREG_FPEXC32_EL2: |
| trap_to_mon = cptr.tfp && ELIs64(tc, EL3); |
| ec = EC_TRAPPED_SIMD_FP; |
| immediate = 0x1E00000; |
| break; |
| // CPACR, CPTR |
| case MISCREG_CPACR_EL12: |
| trap_to_mon = ((el == EL2 && cptr.tcpac && ELIs64(tc, EL3)) || |
| (el == EL1 && cptr.tcpac && ELIs64(tc, EL3) && |
| (!hcr.nv2 || hcr.nv1 || !hcr.nv))) ; |
| break; |
| case MISCREG_CPACR_EL1: |
| trap_to_mon = el <= EL2 && cptr.tcpac && ELIs64(tc, EL3); |
| break; |
| case MISCREG_CPTR_EL2: |
| if (el == EL2) { |
| trap_to_mon = cptr.tcpac; |
| } |
| break; |
| // case MISCREG_LORC_EL1: |
| // case MISCREG_LOREA_EL1: |
| // case MISCREG_LORID_EL1: |
| // case MISCREG_LORN_EL1: |
| // case MISCREG_LORSA_EL1: |
| // trap_to_mon = (el <= EL2) && scr.ns && ELIs64(tc,EL3) |
| // && hcr.tlor && (!hcr.e2h || (hcr.e2h && !hcr.tge)); |
| // break; |
| case MISCREG_MDCCSR_EL0: |
| trap_to_mon = (el <= EL2) && ELIs64(tc, EL3) && mdcr.tda == 0x1; |
| break; |
| case MISCREG_APDAKeyHi_EL1: |
| case MISCREG_APDAKeyLo_EL1: |
| case MISCREG_APDBKeyHi_EL1: |
| case MISCREG_APDBKeyLo_EL1: |
| case MISCREG_APGAKeyHi_EL1: |
| case MISCREG_APGAKeyLo_EL1: |
| case MISCREG_APIAKeyHi_EL1: |
| case MISCREG_APIAKeyLo_EL1: |
| case MISCREG_APIBKeyHi_EL1: |
| case MISCREG_APIBKeyLo_EL1: |
| trap_to_mon = (el == EL1 || el == EL2) && scr.apk == 0 && |
| ELIs64(tc, EL3); |
| break; |
| // Generic Timer |
| case MISCREG_CNTFRQ_EL0 ... MISCREG_CNTVOFF_EL2: |
| trap_to_mon = el == EL1 && |
| isGenericTimerSystemAccessTrapEL3(misc_reg, tc); |
| break; |
| case MISCREG_DBGBVR0_EL1: |
| case MISCREG_DBGBVR1_EL1: |
| case MISCREG_DBGBVR2_EL1: |
| case MISCREG_DBGBVR3_EL1: |
| case MISCREG_DBGBVR4_EL1: |
| case MISCREG_DBGBVR5_EL1: |
| case MISCREG_DBGBVR6_EL1: |
| case MISCREG_DBGBVR7_EL1: |
| case MISCREG_DBGBVR8_EL1: |
| case MISCREG_DBGBVR9_EL1: |
| case MISCREG_DBGBVR10_EL1: |
| case MISCREG_DBGBVR11_EL1: |
| case MISCREG_DBGBVR12_EL1: |
| case MISCREG_DBGBVR13_EL1: |
| case MISCREG_DBGBVR14_EL1: |
| case MISCREG_DBGBVR15_EL1: |
| case MISCREG_DBGBCR0_EL1: |
| case MISCREG_DBGBCR1_EL1: |
| case MISCREG_DBGBCR2_EL1: |
| case MISCREG_DBGBCR3_EL1: |
| case MISCREG_DBGBCR4_EL1: |
| case MISCREG_DBGBCR5_EL1: |
| case MISCREG_DBGBCR6_EL1: |
| case MISCREG_DBGBCR7_EL1: |
| case MISCREG_DBGBCR8_EL1: |
| case MISCREG_DBGBCR9_EL1: |
| case MISCREG_DBGBCR10_EL1: |
| case MISCREG_DBGBCR11_EL1: |
| case MISCREG_DBGBCR12_EL1: |
| case MISCREG_DBGBCR13_EL1: |
| case MISCREG_DBGBCR14_EL1: |
| case MISCREG_DBGBCR15_EL1: |
| case MISCREG_DBGVCR32_EL2: |
| case MISCREG_DBGWVR0_EL1: |
| case MISCREG_DBGWVR1_EL1: |
| case MISCREG_DBGWVR2_EL1: |
| case MISCREG_DBGWVR3_EL1: |
| case MISCREG_DBGWVR4_EL1: |
| case MISCREG_DBGWVR5_EL1: |
| case MISCREG_DBGWVR6_EL1: |
| case MISCREG_DBGWVR7_EL1: |
| case MISCREG_DBGWVR8_EL1: |
| case MISCREG_DBGWVR9_EL1: |
| case MISCREG_DBGWVR10_EL1: |
| case MISCREG_DBGWVR11_EL1: |
| case MISCREG_DBGWVR12_EL1: |
| case MISCREG_DBGWVR13_EL1: |
| case MISCREG_DBGWVR14_EL1: |
| case MISCREG_DBGWVR15_EL1: |
| case MISCREG_DBGWCR0_EL1: |
| case MISCREG_DBGWCR1_EL1: |
| case MISCREG_DBGWCR2_EL1: |
| case MISCREG_DBGWCR3_EL1: |
| case MISCREG_DBGWCR4_EL1: |
| case MISCREG_DBGWCR5_EL1: |
| case MISCREG_DBGWCR6_EL1: |
| case MISCREG_DBGWCR7_EL1: |
| case MISCREG_DBGWCR8_EL1: |
| case MISCREG_DBGWCR9_EL1: |
| case MISCREG_DBGWCR10_EL1: |
| case MISCREG_DBGWCR11_EL1: |
| case MISCREG_DBGWCR12_EL1: |
| case MISCREG_DBGWCR13_EL1: |
| case MISCREG_DBGWCR14_EL1: |
| case MISCREG_DBGWCR15_EL1: |
| case MISCREG_MDCCINT_EL1: |
| case MISCREG_MDCR_EL2: |
| trap_to_mon = ELIs64(tc, EL3) && mdcr.tda && (el == EL2); |
| break; |
| case MISCREG_ZCR_EL1: |
| trap_to_mon = !cptr.ez && ((el == EL3) || |
| ((el <= EL2) && ArmSystem::haveEL(tc,EL3) && ELIs64(tc, EL3))); |
| ec = EC_TRAPPED_SVE; |
| immediate = 0; |
| break; |
| case MISCREG_ZCR_EL2: |
| trap_to_mon = !cptr.ez && ((el == EL3) || |
| ((el == EL2) && ArmSystem::haveEL(tc,EL3) && ELIs64(tc, EL3))); |
| ec = EC_TRAPPED_SVE; |
| immediate = 0; |
| break; |
| case MISCREG_ZCR_EL3: |
| trap_to_mon = !cptr.ez && (el == EL3); |
| ec = EC_TRAPPED_SVE; |
| immediate = 0; |
| break; |
| default: |
| break; |
| } |
| return trap_to_mon; |
| } |
| |
| RegVal |
| MiscRegImmOp64::miscRegImm() const |
| { |
| switch (dest) { |
| case MISCREG_SPSEL: |
| return imm & 0x1; |
| case MISCREG_PAN: |
| return (imm & 0x1) << 22; |
| case MISCREG_UAO: |
| return (imm & 0x1) << 23; |
| default: |
| panic("Not a valid PSTATE field register\n"); |
| } |
| } |
| |
| std::string |
| MiscRegImmOp64::generateDisassembly( |
| Addr pc, const loader::SymbolTable *symtab) const |
| { |
| std::stringstream ss; |
| printMnemonic(ss); |
| printMiscReg(ss, dest); |
| ss << ", "; |
| ccprintf(ss, "#0x%x", imm); |
| return ss.str(); |
| } |
| |
| std::string |
| MiscRegRegImmOp64::generateDisassembly( |
| Addr pc, const loader::SymbolTable *symtab) const |
| { |
| std::stringstream ss; |
| printMnemonic(ss); |
| printMiscReg(ss, dest); |
| ss << ", "; |
| printIntReg(ss, op1); |
| return ss.str(); |
| } |
| |
| std::string |
| RegMiscRegImmOp64::generateDisassembly( |
| Addr pc, const loader::SymbolTable *symtab) const |
| { |
| std::stringstream ss; |
| printMnemonic(ss); |
| printIntReg(ss, dest); |
| ss << ", "; |
| printMiscReg(ss, op1); |
| return ss.str(); |
| } |
| |
| Fault |
| MiscRegImplDefined64::execute(ExecContext *xc, |
| Trace::InstRecord *traceData) const |
| { |
| auto tc = xc->tcBase(); |
| const CPSR cpsr = tc->readMiscReg(MISCREG_CPSR); |
| const ExceptionLevel el = (ExceptionLevel) (uint8_t) cpsr.el; |
| |
| Fault fault = trap(tc, miscReg, el, imm); |
| |
| if (fault != NoFault) { |
| return fault; |
| |
| } else if (warning) { |
| warn_once("\tinstruction '%s' unimplemented\n", fullMnemonic.c_str()); |
| return NoFault; |
| |
| } else { |
| return std::make_shared<UndefinedInstruction>(machInst, false, |
| mnemonic); |
| } |
| } |
| |
| std::string |
| MiscRegImplDefined64::generateDisassembly( |
| Addr pc, const loader::SymbolTable *symtab) const |
| { |
| return csprintf("%-10s (implementation defined)", fullMnemonic.c_str()); |
| } |
| |
| std::string |
| RegNone::generateDisassembly( |
| Addr pc, const loader::SymbolTable *symtab) const |
| { |
| std::stringstream ss; |
| printMnemonic(ss); |
| printIntReg(ss, dest); |
| return ss.str(); |
| } |
| |
| } // namespace gem5 |
