| /* |
| * RISC-V Control and Status Registers. |
| * |
| * Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu |
| * Copyright (c) 2017-2018 SiFive, Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms and conditions of the GNU General Public License, |
| * version 2 or later, as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along with |
| * this program. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qemu/log.h" |
| #include "cpu.h" |
| #include "qemu/main-loop.h" |
| #include "exec/exec-all.h" |
| |
| /* CSR function table public API */ |
| void riscv_get_csr_ops(int csrno, riscv_csr_operations *ops) |
| { |
| *ops = csr_ops[csrno & (CSR_TABLE_SIZE - 1)]; |
| } |
| |
| void riscv_set_csr_ops(int csrno, riscv_csr_operations *ops) |
| { |
| csr_ops[csrno & (CSR_TABLE_SIZE - 1)] = *ops; |
| } |
| |
| /* Predicates */ |
| static RISCVException fs(CPURISCVState *env, int csrno) |
| { |
| #if !defined(CONFIG_USER_ONLY) |
| if (!env->debugger && !riscv_cpu_fp_enabled(env)) { |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| #endif |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException vs(CPURISCVState *env, int csrno) |
| { |
| CPUState *cs = env_cpu(env); |
| RISCVCPU *cpu = RISCV_CPU(cs); |
| |
| if (env->misa_ext & RVV || |
| cpu->cfg.ext_zve32f || cpu->cfg.ext_zve64f) { |
| #if !defined(CONFIG_USER_ONLY) |
| if (!env->debugger && !riscv_cpu_vector_enabled(env)) { |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| #endif |
| return RISCV_EXCP_NONE; |
| } |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| |
| static RISCVException ctr(CPURISCVState *env, int csrno) |
| { |
| #if !defined(CONFIG_USER_ONLY) |
| CPUState *cs = env_cpu(env); |
| RISCVCPU *cpu = RISCV_CPU(cs); |
| |
| if (!cpu->cfg.ext_counters) { |
| /* The Counters extensions is not enabled */ |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| |
| if (riscv_cpu_virt_enabled(env)) { |
| switch (csrno) { |
| case CSR_CYCLE: |
| if (!get_field(env->hcounteren, COUNTEREN_CY) && |
| get_field(env->mcounteren, COUNTEREN_CY)) { |
| return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; |
| } |
| break; |
| case CSR_TIME: |
| if (!get_field(env->hcounteren, COUNTEREN_TM) && |
| get_field(env->mcounteren, COUNTEREN_TM)) { |
| return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; |
| } |
| break; |
| case CSR_INSTRET: |
| if (!get_field(env->hcounteren, COUNTEREN_IR) && |
| get_field(env->mcounteren, COUNTEREN_IR)) { |
| return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; |
| } |
| break; |
| case CSR_HPMCOUNTER3...CSR_HPMCOUNTER31: |
| if (!get_field(env->hcounteren, 1 << (csrno - CSR_HPMCOUNTER3)) && |
| get_field(env->mcounteren, 1 << (csrno - CSR_HPMCOUNTER3))) { |
| return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; |
| } |
| break; |
| } |
| if (riscv_cpu_mxl(env) == MXL_RV32) { |
| switch (csrno) { |
| case CSR_CYCLEH: |
| if (!get_field(env->hcounteren, COUNTEREN_CY) && |
| get_field(env->mcounteren, COUNTEREN_CY)) { |
| return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; |
| } |
| break; |
| case CSR_TIMEH: |
| if (!get_field(env->hcounteren, COUNTEREN_TM) && |
| get_field(env->mcounteren, COUNTEREN_TM)) { |
| return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; |
| } |
| break; |
| case CSR_INSTRETH: |
| if (!get_field(env->hcounteren, COUNTEREN_IR) && |
| get_field(env->mcounteren, COUNTEREN_IR)) { |
| return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; |
| } |
| break; |
| case CSR_HPMCOUNTER3H...CSR_HPMCOUNTER31H: |
| if (!get_field(env->hcounteren, 1 << (csrno - CSR_HPMCOUNTER3H)) && |
| get_field(env->mcounteren, 1 << (csrno - CSR_HPMCOUNTER3H))) { |
| return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; |
| } |
| break; |
| } |
| } |
| } |
| #endif |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException ctr32(CPURISCVState *env, int csrno) |
| { |
| if (riscv_cpu_mxl(env) != MXL_RV32) { |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| |
| return ctr(env, csrno); |
| } |
| |
| #if !defined(CONFIG_USER_ONLY) |
| static RISCVException any(CPURISCVState *env, int csrno) |
| { |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException any32(CPURISCVState *env, int csrno) |
| { |
| if (riscv_cpu_mxl(env) != MXL_RV32) { |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| |
| return any(env, csrno); |
| |
| } |
| |
| static RISCVException smode(CPURISCVState *env, int csrno) |
| { |
| if (riscv_has_ext(env, RVS)) { |
| return RISCV_EXCP_NONE; |
| } |
| |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| |
| static RISCVException hmode(CPURISCVState *env, int csrno) |
| { |
| if (riscv_has_ext(env, RVS) && |
| riscv_has_ext(env, RVH)) { |
| /* Hypervisor extension is supported */ |
| if ((env->priv == PRV_S && !riscv_cpu_virt_enabled(env)) || |
| env->priv == PRV_M) { |
| return RISCV_EXCP_NONE; |
| } else { |
| return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; |
| } |
| } |
| |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| |
| static RISCVException hmode32(CPURISCVState *env, int csrno) |
| { |
| if (riscv_cpu_mxl(env) != MXL_RV32) { |
| if (riscv_cpu_virt_enabled(env)) { |
| return RISCV_EXCP_ILLEGAL_INST; |
| } else { |
| return RISCV_EXCP_VIRT_INSTRUCTION_FAULT; |
| } |
| } |
| |
| return hmode(env, csrno); |
| |
| } |
| |
| /* Checks if PointerMasking registers could be accessed */ |
| static RISCVException pointer_masking(CPURISCVState *env, int csrno) |
| { |
| /* Check if j-ext is present */ |
| if (riscv_has_ext(env, RVJ)) { |
| return RISCV_EXCP_NONE; |
| } |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| |
| static RISCVException pmp(CPURISCVState *env, int csrno) |
| { |
| if (riscv_feature(env, RISCV_FEATURE_PMP)) { |
| return RISCV_EXCP_NONE; |
| } |
| |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| |
| static RISCVException epmp(CPURISCVState *env, int csrno) |
| { |
| if (env->priv == PRV_M && riscv_feature(env, RISCV_FEATURE_EPMP)) { |
| return RISCV_EXCP_NONE; |
| } |
| |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| #endif |
| |
| /* User Floating-Point CSRs */ |
| static RISCVException read_fflags(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = riscv_cpu_get_fflags(env); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_fflags(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| #if !defined(CONFIG_USER_ONLY) |
| env->mstatus |= MSTATUS_FS; |
| #endif |
| riscv_cpu_set_fflags(env, val & (FSR_AEXC >> FSR_AEXC_SHIFT)); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_frm(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->frm; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_frm(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| #if !defined(CONFIG_USER_ONLY) |
| env->mstatus |= MSTATUS_FS; |
| #endif |
| env->frm = val & (FSR_RD >> FSR_RD_SHIFT); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_fcsr(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = (riscv_cpu_get_fflags(env) << FSR_AEXC_SHIFT) |
| | (env->frm << FSR_RD_SHIFT); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_fcsr(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| #if !defined(CONFIG_USER_ONLY) |
| env->mstatus |= MSTATUS_FS; |
| #endif |
| env->frm = (val & FSR_RD) >> FSR_RD_SHIFT; |
| riscv_cpu_set_fflags(env, (val & FSR_AEXC) >> FSR_AEXC_SHIFT); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_vtype(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| uint64_t vill; |
| switch (env->xl) { |
| case MXL_RV32: |
| vill = (uint32_t)env->vill << 31; |
| break; |
| case MXL_RV64: |
| vill = (uint64_t)env->vill << 63; |
| break; |
| default: |
| g_assert_not_reached(); |
| } |
| *val = (target_ulong)vill | env->vtype; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_vl(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->vl; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static int read_vlenb(CPURISCVState *env, int csrno, target_ulong *val) |
| { |
| *val = env_archcpu(env)->cfg.vlen >> 3; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_vxrm(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->vxrm; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_vxrm(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| #if !defined(CONFIG_USER_ONLY) |
| env->mstatus |= MSTATUS_VS; |
| #endif |
| env->vxrm = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_vxsat(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->vxsat; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_vxsat(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| #if !defined(CONFIG_USER_ONLY) |
| env->mstatus |= MSTATUS_VS; |
| #endif |
| env->vxsat = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_vstart(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->vstart; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_vstart(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| #if !defined(CONFIG_USER_ONLY) |
| env->mstatus |= MSTATUS_VS; |
| #endif |
| /* |
| * The vstart CSR is defined to have only enough writable bits |
| * to hold the largest element index, i.e. lg2(VLEN) bits. |
| */ |
| env->vstart = val & ~(~0ULL << ctzl(env_archcpu(env)->cfg.vlen)); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static int read_vcsr(CPURISCVState *env, int csrno, target_ulong *val) |
| { |
| *val = (env->vxrm << VCSR_VXRM_SHIFT) | (env->vxsat << VCSR_VXSAT_SHIFT); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static int write_vcsr(CPURISCVState *env, int csrno, target_ulong val) |
| { |
| #if !defined(CONFIG_USER_ONLY) |
| env->mstatus |= MSTATUS_VS; |
| #endif |
| env->vxrm = (val & VCSR_VXRM) >> VCSR_VXRM_SHIFT; |
| env->vxsat = (val & VCSR_VXSAT) >> VCSR_VXSAT_SHIFT; |
| return RISCV_EXCP_NONE; |
| } |
| |
| /* User Timers and Counters */ |
| static RISCVException read_instret(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| #if !defined(CONFIG_USER_ONLY) |
| if (icount_enabled()) { |
| *val = icount_get(); |
| } else { |
| *val = cpu_get_host_ticks(); |
| } |
| #else |
| *val = cpu_get_host_ticks(); |
| #endif |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_instreth(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| #if !defined(CONFIG_USER_ONLY) |
| if (icount_enabled()) { |
| *val = icount_get() >> 32; |
| } else { |
| *val = cpu_get_host_ticks() >> 32; |
| } |
| #else |
| *val = cpu_get_host_ticks() >> 32; |
| #endif |
| return RISCV_EXCP_NONE; |
| } |
| |
| #if defined(CONFIG_USER_ONLY) |
| static RISCVException read_time(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = cpu_get_host_ticks(); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_timeh(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = cpu_get_host_ticks() >> 32; |
| return RISCV_EXCP_NONE; |
| } |
| |
| #else /* CONFIG_USER_ONLY */ |
| |
| static RISCVException read_time(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| uint64_t delta = riscv_cpu_virt_enabled(env) ? env->htimedelta : 0; |
| |
| if (!env->rdtime_fn) { |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| |
| *val = env->rdtime_fn(env->rdtime_fn_arg) + delta; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_timeh(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| uint64_t delta = riscv_cpu_virt_enabled(env) ? env->htimedelta : 0; |
| |
| if (!env->rdtime_fn) { |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| |
| *val = (env->rdtime_fn(env->rdtime_fn_arg) + delta) >> 32; |
| return RISCV_EXCP_NONE; |
| } |
| |
| /* Machine constants */ |
| |
| #define M_MODE_INTERRUPTS (MIP_MSIP | MIP_MTIP | MIP_MEIP) |
| #define S_MODE_INTERRUPTS (MIP_SSIP | MIP_STIP | MIP_SEIP) |
| #define VS_MODE_INTERRUPTS (MIP_VSSIP | MIP_VSTIP | MIP_VSEIP) |
| |
| static const target_ulong delegable_ints = S_MODE_INTERRUPTS | |
| VS_MODE_INTERRUPTS; |
| static const target_ulong vs_delegable_ints = VS_MODE_INTERRUPTS; |
| static const target_ulong all_ints = M_MODE_INTERRUPTS | S_MODE_INTERRUPTS | |
| VS_MODE_INTERRUPTS; |
| #define DELEGABLE_EXCPS ((1ULL << (RISCV_EXCP_INST_ADDR_MIS)) | \ |
| (1ULL << (RISCV_EXCP_INST_ACCESS_FAULT)) | \ |
| (1ULL << (RISCV_EXCP_ILLEGAL_INST)) | \ |
| (1ULL << (RISCV_EXCP_BREAKPOINT)) | \ |
| (1ULL << (RISCV_EXCP_LOAD_ADDR_MIS)) | \ |
| (1ULL << (RISCV_EXCP_LOAD_ACCESS_FAULT)) | \ |
| (1ULL << (RISCV_EXCP_STORE_AMO_ADDR_MIS)) | \ |
| (1ULL << (RISCV_EXCP_STORE_AMO_ACCESS_FAULT)) | \ |
| (1ULL << (RISCV_EXCP_U_ECALL)) | \ |
| (1ULL << (RISCV_EXCP_S_ECALL)) | \ |
| (1ULL << (RISCV_EXCP_VS_ECALL)) | \ |
| (1ULL << (RISCV_EXCP_M_ECALL)) | \ |
| (1ULL << (RISCV_EXCP_INST_PAGE_FAULT)) | \ |
| (1ULL << (RISCV_EXCP_LOAD_PAGE_FAULT)) | \ |
| (1ULL << (RISCV_EXCP_STORE_PAGE_FAULT)) | \ |
| (1ULL << (RISCV_EXCP_INST_GUEST_PAGE_FAULT)) | \ |
| (1ULL << (RISCV_EXCP_LOAD_GUEST_ACCESS_FAULT)) | \ |
| (1ULL << (RISCV_EXCP_VIRT_INSTRUCTION_FAULT)) | \ |
| (1ULL << (RISCV_EXCP_STORE_GUEST_AMO_ACCESS_FAULT))) |
| static const target_ulong vs_delegable_excps = DELEGABLE_EXCPS & |
| ~((1ULL << (RISCV_EXCP_S_ECALL)) | |
| (1ULL << (RISCV_EXCP_VS_ECALL)) | |
| (1ULL << (RISCV_EXCP_M_ECALL)) | |
| (1ULL << (RISCV_EXCP_INST_GUEST_PAGE_FAULT)) | |
| (1ULL << (RISCV_EXCP_LOAD_GUEST_ACCESS_FAULT)) | |
| (1ULL << (RISCV_EXCP_VIRT_INSTRUCTION_FAULT)) | |
| (1ULL << (RISCV_EXCP_STORE_GUEST_AMO_ACCESS_FAULT))); |
| static const target_ulong sstatus_v1_10_mask = SSTATUS_SIE | SSTATUS_SPIE | |
| SSTATUS_UIE | SSTATUS_UPIE | SSTATUS_SPP | SSTATUS_FS | SSTATUS_XS | |
| SSTATUS_SUM | SSTATUS_MXR | SSTATUS_VS; |
| static const target_ulong sip_writable_mask = SIP_SSIP | MIP_USIP | MIP_UEIP; |
| static const target_ulong hip_writable_mask = MIP_VSSIP; |
| static const target_ulong hvip_writable_mask = MIP_VSSIP | MIP_VSTIP | MIP_VSEIP; |
| static const target_ulong vsip_writable_mask = MIP_VSSIP; |
| |
| static const char valid_vm_1_10_32[16] = { |
| [VM_1_10_MBARE] = 1, |
| [VM_1_10_SV32] = 1 |
| }; |
| |
| static const char valid_vm_1_10_64[16] = { |
| [VM_1_10_MBARE] = 1, |
| [VM_1_10_SV39] = 1, |
| [VM_1_10_SV48] = 1, |
| [VM_1_10_SV57] = 1 |
| }; |
| |
| /* Machine Information Registers */ |
| static RISCVException read_zero(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = 0; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_mhartid(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->mhartid; |
| return RISCV_EXCP_NONE; |
| } |
| |
| /* Machine Trap Setup */ |
| |
| /* We do not store SD explicitly, only compute it on demand. */ |
| static uint64_t add_status_sd(RISCVMXL xl, uint64_t status) |
| { |
| if ((status & MSTATUS_FS) == MSTATUS_FS || |
| (status & MSTATUS_VS) == MSTATUS_VS || |
| (status & MSTATUS_XS) == MSTATUS_XS) { |
| switch (xl) { |
| case MXL_RV32: |
| return status | MSTATUS32_SD; |
| case MXL_RV64: |
| return status | MSTATUS64_SD; |
| case MXL_RV128: |
| return MSTATUSH128_SD; |
| default: |
| g_assert_not_reached(); |
| } |
| } |
| return status; |
| } |
| |
| static RISCVException read_mstatus(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = add_status_sd(riscv_cpu_mxl(env), env->mstatus); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static int validate_vm(CPURISCVState *env, target_ulong vm) |
| { |
| if (riscv_cpu_mxl(env) == MXL_RV32) { |
| return valid_vm_1_10_32[vm & 0xf]; |
| } else { |
| return valid_vm_1_10_64[vm & 0xf]; |
| } |
| } |
| |
| static RISCVException write_mstatus(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| uint64_t mstatus = env->mstatus; |
| uint64_t mask = 0; |
| RISCVMXL xl = riscv_cpu_mxl(env); |
| |
| /* flush tlb on mstatus fields that affect VM */ |
| if ((val ^ mstatus) & (MSTATUS_MXR | MSTATUS_MPP | MSTATUS_MPV | |
| MSTATUS_MPRV | MSTATUS_SUM)) { |
| tlb_flush(env_cpu(env)); |
| } |
| mask = MSTATUS_SIE | MSTATUS_SPIE | MSTATUS_MIE | MSTATUS_MPIE | |
| MSTATUS_SPP | MSTATUS_FS | MSTATUS_MPRV | MSTATUS_SUM | |
| MSTATUS_MPP | MSTATUS_MXR | MSTATUS_TVM | MSTATUS_TSR | |
| MSTATUS_TW | MSTATUS_VS; |
| |
| if (xl != MXL_RV32 || env->debugger) { |
| /* |
| * RV32: MPV and GVA are not in mstatus. The current plan is to |
| * add them to mstatush. For now, we just don't support it. |
| */ |
| mask |= MSTATUS_MPV | MSTATUS_GVA; |
| if ((val & MSTATUS64_UXL) != 0) { |
| mask |= MSTATUS64_UXL; |
| } |
| } |
| |
| mstatus = (mstatus & ~mask) | (val & mask); |
| |
| if (xl > MXL_RV32) { |
| /* SXL field is for now read only */ |
| mstatus = set_field(mstatus, MSTATUS64_SXL, xl); |
| } |
| env->mstatus = mstatus; |
| env->xl = cpu_recompute_xl(env); |
| |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_mstatush(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->mstatus >> 32; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_mstatush(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| uint64_t valh = (uint64_t)val << 32; |
| uint64_t mask = MSTATUS_MPV | MSTATUS_GVA; |
| |
| if ((valh ^ env->mstatus) & (MSTATUS_MPV)) { |
| tlb_flush(env_cpu(env)); |
| } |
| |
| env->mstatus = (env->mstatus & ~mask) | (valh & mask); |
| |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_mstatus_i128(CPURISCVState *env, int csrno, |
| Int128 *val) |
| { |
| *val = int128_make128(env->mstatus, add_status_sd(MXL_RV128, env->mstatus)); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_misa_i128(CPURISCVState *env, int csrno, |
| Int128 *val) |
| { |
| *val = int128_make128(env->misa_ext, (uint64_t)MXL_RV128 << 62); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_misa(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| target_ulong misa; |
| |
| switch (env->misa_mxl) { |
| case MXL_RV32: |
| misa = (target_ulong)MXL_RV32 << 30; |
| break; |
| #ifdef TARGET_RISCV64 |
| case MXL_RV64: |
| misa = (target_ulong)MXL_RV64 << 62; |
| break; |
| #endif |
| default: |
| g_assert_not_reached(); |
| } |
| |
| *val = misa | env->misa_ext; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_misa(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| if (!riscv_feature(env, RISCV_FEATURE_MISA)) { |
| /* drop write to misa */ |
| return RISCV_EXCP_NONE; |
| } |
| |
| /* 'I' or 'E' must be present */ |
| if (!(val & (RVI | RVE))) { |
| /* It is not, drop write to misa */ |
| return RISCV_EXCP_NONE; |
| } |
| |
| /* 'E' excludes all other extensions */ |
| if (val & RVE) { |
| /* when we support 'E' we can do "val = RVE;" however |
| * for now we just drop writes if 'E' is present. |
| */ |
| return RISCV_EXCP_NONE; |
| } |
| |
| /* |
| * misa.MXL writes are not supported by QEMU. |
| * Drop writes to those bits. |
| */ |
| |
| /* Mask extensions that are not supported by this hart */ |
| val &= env->misa_ext_mask; |
| |
| /* Mask extensions that are not supported by QEMU */ |
| val &= (RVI | RVE | RVM | RVA | RVF | RVD | RVC | RVS | RVU | RVV); |
| |
| /* 'D' depends on 'F', so clear 'D' if 'F' is not present */ |
| if ((val & RVD) && !(val & RVF)) { |
| val &= ~RVD; |
| } |
| |
| /* Suppress 'C' if next instruction is not aligned |
| * TODO: this should check next_pc |
| */ |
| if ((val & RVC) && (GETPC() & ~3) != 0) { |
| val &= ~RVC; |
| } |
| |
| /* If nothing changed, do nothing. */ |
| if (val == env->misa_ext) { |
| return RISCV_EXCP_NONE; |
| } |
| |
| /* flush translation cache */ |
| tb_flush(env_cpu(env)); |
| env->misa_ext = val; |
| env->xl = riscv_cpu_mxl(env); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_medeleg(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->medeleg; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_medeleg(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->medeleg = (env->medeleg & ~DELEGABLE_EXCPS) | (val & DELEGABLE_EXCPS); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_mideleg(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->mideleg; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_mideleg(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->mideleg = (env->mideleg & ~delegable_ints) | (val & delegable_ints); |
| if (riscv_has_ext(env, RVH)) { |
| env->mideleg |= VS_MODE_INTERRUPTS; |
| } |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_mie(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->mie; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_mie(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->mie = (env->mie & ~all_ints) | (val & all_ints); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_mtvec(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->mtvec; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_mtvec(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| /* bits [1:0] encode mode; 0 = direct, 1 = vectored, 2 >= reserved */ |
| if ((val & 3) < 2) { |
| env->mtvec = val; |
| } else { |
| qemu_log_mask(LOG_UNIMP, "CSR_MTVEC: reserved mode not supported\n"); |
| } |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_mcounteren(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->mcounteren; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_mcounteren(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->mcounteren = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| /* Machine Trap Handling */ |
| static RISCVException read_mscratch_i128(CPURISCVState *env, int csrno, |
| Int128 *val) |
| { |
| *val = int128_make128(env->mscratch, env->mscratchh); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_mscratch_i128(CPURISCVState *env, int csrno, |
| Int128 val) |
| { |
| env->mscratch = int128_getlo(val); |
| env->mscratchh = int128_gethi(val); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_mscratch(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->mscratch; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_mscratch(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->mscratch = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_mepc(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->mepc; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_mepc(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->mepc = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_mcause(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->mcause; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_mcause(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->mcause = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_mtval(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->mtval; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_mtval(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->mtval = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException rmw_mip(CPURISCVState *env, int csrno, |
| target_ulong *ret_value, |
| target_ulong new_value, target_ulong write_mask) |
| { |
| RISCVCPU *cpu = env_archcpu(env); |
| /* Allow software control of delegable interrupts not claimed by hardware */ |
| target_ulong mask = write_mask & delegable_ints & ~env->miclaim; |
| uint32_t old_mip; |
| |
| if (mask) { |
| old_mip = riscv_cpu_update_mip(cpu, mask, (new_value & mask)); |
| } else { |
| old_mip = env->mip; |
| } |
| |
| if (ret_value) { |
| *ret_value = old_mip; |
| } |
| |
| return RISCV_EXCP_NONE; |
| } |
| |
| /* Supervisor Trap Setup */ |
| static RISCVException read_sstatus_i128(CPURISCVState *env, int csrno, |
| Int128 *val) |
| { |
| uint64_t mask = sstatus_v1_10_mask; |
| uint64_t sstatus = env->mstatus & mask; |
| if (env->xl != MXL_RV32 || env->debugger) { |
| mask |= SSTATUS64_UXL; |
| } |
| |
| *val = int128_make128(sstatus, add_status_sd(MXL_RV128, sstatus)); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_sstatus(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| target_ulong mask = (sstatus_v1_10_mask); |
| if (env->xl != MXL_RV32 || env->debugger) { |
| mask |= SSTATUS64_UXL; |
| } |
| /* TODO: Use SXL not MXL. */ |
| *val = add_status_sd(riscv_cpu_mxl(env), env->mstatus & mask); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_sstatus(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| target_ulong mask = (sstatus_v1_10_mask); |
| |
| if (env->xl != MXL_RV32 || env->debugger) { |
| if ((val & SSTATUS64_UXL) != 0) { |
| mask |= SSTATUS64_UXL; |
| } |
| } |
| target_ulong newval = (env->mstatus & ~mask) | (val & mask); |
| return write_mstatus(env, CSR_MSTATUS, newval); |
| } |
| |
| static RISCVException read_vsie(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| /* Shift the VS bits to their S bit location in vsie */ |
| *val = (env->mie & env->hideleg & VS_MODE_INTERRUPTS) >> 1; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_sie(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| if (riscv_cpu_virt_enabled(env)) { |
| read_vsie(env, CSR_VSIE, val); |
| } else { |
| *val = env->mie & env->mideleg; |
| } |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_vsie(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| /* Shift the S bits to their VS bit location in mie */ |
| target_ulong newval = (env->mie & ~VS_MODE_INTERRUPTS) | |
| ((val << 1) & env->hideleg & VS_MODE_INTERRUPTS); |
| return write_mie(env, CSR_MIE, newval); |
| } |
| |
| static int write_sie(CPURISCVState *env, int csrno, target_ulong val) |
| { |
| if (riscv_cpu_virt_enabled(env)) { |
| write_vsie(env, CSR_VSIE, val); |
| } else { |
| target_ulong newval = (env->mie & ~S_MODE_INTERRUPTS) | |
| (val & S_MODE_INTERRUPTS); |
| write_mie(env, CSR_MIE, newval); |
| } |
| |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_stvec(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->stvec; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_stvec(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| /* bits [1:0] encode mode; 0 = direct, 1 = vectored, 2 >= reserved */ |
| if ((val & 3) < 2) { |
| env->stvec = val; |
| } else { |
| qemu_log_mask(LOG_UNIMP, "CSR_STVEC: reserved mode not supported\n"); |
| } |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_scounteren(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->scounteren; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_scounteren(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->scounteren = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| /* Supervisor Trap Handling */ |
| static RISCVException read_sscratch_i128(CPURISCVState *env, int csrno, |
| Int128 *val) |
| { |
| *val = int128_make128(env->sscratch, env->sscratchh); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_sscratch_i128(CPURISCVState *env, int csrno, |
| Int128 val) |
| { |
| env->sscratch = int128_getlo(val); |
| env->sscratchh = int128_gethi(val); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_sscratch(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->sscratch; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_sscratch(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->sscratch = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_sepc(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->sepc; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_sepc(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->sepc = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_scause(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->scause; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_scause(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->scause = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_stval(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->stval; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_stval(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->stval = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException rmw_vsip(CPURISCVState *env, int csrno, |
| target_ulong *ret_value, |
| target_ulong new_value, target_ulong write_mask) |
| { |
| /* Shift the S bits to their VS bit location in mip */ |
| int ret = rmw_mip(env, 0, ret_value, new_value << 1, |
| (write_mask << 1) & vsip_writable_mask & env->hideleg); |
| |
| if (ret_value) { |
| *ret_value &= VS_MODE_INTERRUPTS; |
| /* Shift the VS bits to their S bit location in vsip */ |
| *ret_value >>= 1; |
| } |
| return ret; |
| } |
| |
| static RISCVException rmw_sip(CPURISCVState *env, int csrno, |
| target_ulong *ret_value, |
| target_ulong new_value, target_ulong write_mask) |
| { |
| int ret; |
| |
| if (riscv_cpu_virt_enabled(env)) { |
| ret = rmw_vsip(env, CSR_VSIP, ret_value, new_value, write_mask); |
| } else { |
| ret = rmw_mip(env, CSR_MSTATUS, ret_value, new_value, |
| write_mask & env->mideleg & sip_writable_mask); |
| } |
| |
| if (ret_value) { |
| *ret_value &= env->mideleg; |
| } |
| return ret; |
| } |
| |
| /* Supervisor Protection and Translation */ |
| static RISCVException read_satp(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| if (!riscv_feature(env, RISCV_FEATURE_MMU)) { |
| *val = 0; |
| return RISCV_EXCP_NONE; |
| } |
| |
| if (env->priv == PRV_S && get_field(env->mstatus, MSTATUS_TVM)) { |
| return RISCV_EXCP_ILLEGAL_INST; |
| } else { |
| *val = env->satp; |
| } |
| |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_satp(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| target_ulong vm, mask, asid; |
| |
| if (!riscv_feature(env, RISCV_FEATURE_MMU)) { |
| return RISCV_EXCP_NONE; |
| } |
| |
| if (riscv_cpu_mxl(env) == MXL_RV32) { |
| vm = validate_vm(env, get_field(val, SATP32_MODE)); |
| mask = (val ^ env->satp) & (SATP32_MODE | SATP32_ASID | SATP32_PPN); |
| asid = (val ^ env->satp) & SATP32_ASID; |
| } else { |
| vm = validate_vm(env, get_field(val, SATP64_MODE)); |
| mask = (val ^ env->satp) & (SATP64_MODE | SATP64_ASID | SATP64_PPN); |
| asid = (val ^ env->satp) & SATP64_ASID; |
| } |
| |
| if (vm && mask) { |
| if (env->priv == PRV_S && get_field(env->mstatus, MSTATUS_TVM)) { |
| return RISCV_EXCP_ILLEGAL_INST; |
| } else { |
| if (asid) { |
| tlb_flush(env_cpu(env)); |
| } |
| env->satp = val; |
| } |
| } |
| return RISCV_EXCP_NONE; |
| } |
| |
| /* Hypervisor Extensions */ |
| static RISCVException read_hstatus(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->hstatus; |
| if (riscv_cpu_mxl(env) != MXL_RV32) { |
| /* We only support 64-bit VSXL */ |
| *val = set_field(*val, HSTATUS_VSXL, 2); |
| } |
| /* We only support little endian */ |
| *val = set_field(*val, HSTATUS_VSBE, 0); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_hstatus(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->hstatus = val; |
| if (riscv_cpu_mxl(env) != MXL_RV32 && get_field(val, HSTATUS_VSXL) != 2) { |
| qemu_log_mask(LOG_UNIMP, "QEMU does not support mixed HSXLEN options."); |
| } |
| if (get_field(val, HSTATUS_VSBE) != 0) { |
| qemu_log_mask(LOG_UNIMP, "QEMU does not support big endian guests."); |
| } |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_hedeleg(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->hedeleg; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_hedeleg(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->hedeleg = val & vs_delegable_excps; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_hideleg(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->hideleg; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_hideleg(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->hideleg = val & vs_delegable_ints; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException rmw_hvip(CPURISCVState *env, int csrno, |
| target_ulong *ret_value, |
| target_ulong new_value, target_ulong write_mask) |
| { |
| int ret = rmw_mip(env, 0, ret_value, new_value, |
| write_mask & hvip_writable_mask); |
| |
| if (ret_value) { |
| *ret_value &= hvip_writable_mask; |
| } |
| return ret; |
| } |
| |
| static RISCVException rmw_hip(CPURISCVState *env, int csrno, |
| target_ulong *ret_value, |
| target_ulong new_value, target_ulong write_mask) |
| { |
| int ret = rmw_mip(env, 0, ret_value, new_value, |
| write_mask & hip_writable_mask); |
| |
| if (ret_value) { |
| *ret_value &= hip_writable_mask; |
| } |
| return ret; |
| } |
| |
| static RISCVException read_hie(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->mie & VS_MODE_INTERRUPTS; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_hie(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| target_ulong newval = (env->mie & ~VS_MODE_INTERRUPTS) | (val & VS_MODE_INTERRUPTS); |
| return write_mie(env, CSR_MIE, newval); |
| } |
| |
| static RISCVException read_hcounteren(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->hcounteren; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_hcounteren(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->hcounteren = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_hgeie(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| if (val) { |
| qemu_log_mask(LOG_UNIMP, "No support for a non-zero GEILEN."); |
| } |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_htval(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->htval; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_htval(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->htval = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_htinst(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->htinst; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_htinst(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_hgeip(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| if (val) { |
| qemu_log_mask(LOG_UNIMP, "No support for a non-zero GEILEN."); |
| } |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_hgatp(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->hgatp; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_hgatp(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->hgatp = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_htimedelta(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| if (!env->rdtime_fn) { |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| |
| *val = env->htimedelta; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_htimedelta(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| if (!env->rdtime_fn) { |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| |
| if (riscv_cpu_mxl(env) == MXL_RV32) { |
| env->htimedelta = deposit64(env->htimedelta, 0, 32, (uint64_t)val); |
| } else { |
| env->htimedelta = val; |
| } |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_htimedeltah(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| if (!env->rdtime_fn) { |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| |
| *val = env->htimedelta >> 32; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_htimedeltah(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| if (!env->rdtime_fn) { |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| |
| env->htimedelta = deposit64(env->htimedelta, 32, 32, (uint64_t)val); |
| return RISCV_EXCP_NONE; |
| } |
| |
| /* Virtual CSR Registers */ |
| static RISCVException read_vsstatus(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->vsstatus; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_vsstatus(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| uint64_t mask = (target_ulong)-1; |
| if ((val & VSSTATUS64_UXL) == 0) { |
| mask &= ~VSSTATUS64_UXL; |
| } |
| env->vsstatus = (env->vsstatus & ~mask) | (uint64_t)val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static int read_vstvec(CPURISCVState *env, int csrno, target_ulong *val) |
| { |
| *val = env->vstvec; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_vstvec(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->vstvec = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_vsscratch(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->vsscratch; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_vsscratch(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->vsscratch = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_vsepc(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->vsepc; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_vsepc(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->vsepc = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_vscause(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->vscause; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_vscause(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->vscause = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_vstval(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->vstval; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_vstval(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->vstval = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_vsatp(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->vsatp; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_vsatp(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->vsatp = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_mtval2(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->mtval2; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_mtval2(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->mtval2 = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_mtinst(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->mtinst; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_mtinst(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| env->mtinst = val; |
| return RISCV_EXCP_NONE; |
| } |
| |
| /* Physical Memory Protection */ |
| static RISCVException read_mseccfg(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = mseccfg_csr_read(env); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_mseccfg(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| mseccfg_csr_write(env, val); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static bool check_pmp_reg_index(CPURISCVState *env, uint32_t reg_index) |
| { |
| /* TODO: RV128 restriction check */ |
| if ((reg_index & 1) && (riscv_cpu_mxl(env) == MXL_RV64)) { |
| return false; |
| } |
| return true; |
| } |
| |
| static RISCVException read_pmpcfg(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| uint32_t reg_index = csrno - CSR_PMPCFG0; |
| |
| if (!check_pmp_reg_index(env, reg_index)) { |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| *val = pmpcfg_csr_read(env, csrno - CSR_PMPCFG0); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_pmpcfg(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| uint32_t reg_index = csrno - CSR_PMPCFG0; |
| |
| if (!check_pmp_reg_index(env, reg_index)) { |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| pmpcfg_csr_write(env, csrno - CSR_PMPCFG0, val); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_pmpaddr(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = pmpaddr_csr_read(env, csrno - CSR_PMPADDR0); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_pmpaddr(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| pmpaddr_csr_write(env, csrno - CSR_PMPADDR0, val); |
| return RISCV_EXCP_NONE; |
| } |
| |
| /* |
| * Functions to access Pointer Masking feature registers |
| * We have to check if current priv lvl could modify |
| * csr in given mode |
| */ |
| static bool check_pm_current_disabled(CPURISCVState *env, int csrno) |
| { |
| int csr_priv = get_field(csrno, 0x300); |
| int pm_current; |
| |
| if (env->debugger) { |
| return false; |
| } |
| /* |
| * If priv lvls differ that means we're accessing csr from higher priv lvl, |
| * so allow the access |
| */ |
| if (env->priv != csr_priv) { |
| return false; |
| } |
| switch (env->priv) { |
| case PRV_M: |
| pm_current = get_field(env->mmte, M_PM_CURRENT); |
| break; |
| case PRV_S: |
| pm_current = get_field(env->mmte, S_PM_CURRENT); |
| break; |
| case PRV_U: |
| pm_current = get_field(env->mmte, U_PM_CURRENT); |
| break; |
| default: |
| g_assert_not_reached(); |
| } |
| /* It's same priv lvl, so we allow to modify csr only if pm.current==1 */ |
| return !pm_current; |
| } |
| |
| static RISCVException read_mmte(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->mmte & MMTE_MASK; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_mmte(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| uint64_t mstatus; |
| target_ulong wpri_val = val & MMTE_MASK; |
| |
| if (val != wpri_val) { |
| qemu_log_mask(LOG_GUEST_ERROR, "%s" TARGET_FMT_lx " %s" TARGET_FMT_lx "\n", |
| "MMTE: WPRI violation written 0x", val, |
| "vs expected 0x", wpri_val); |
| } |
| /* for machine mode pm.current is hardwired to 1 */ |
| wpri_val |= MMTE_M_PM_CURRENT; |
| |
| /* hardwiring pm.instruction bit to 0, since it's not supported yet */ |
| wpri_val &= ~(MMTE_M_PM_INSN | MMTE_S_PM_INSN | MMTE_U_PM_INSN); |
| env->mmte = wpri_val | PM_EXT_DIRTY; |
| riscv_cpu_update_mask(env); |
| |
| /* Set XS and SD bits, since PM CSRs are dirty */ |
| mstatus = env->mstatus | MSTATUS_XS; |
| write_mstatus(env, csrno, mstatus); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_smte(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->mmte & SMTE_MASK; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_smte(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| target_ulong wpri_val = val & SMTE_MASK; |
| |
| if (val != wpri_val) { |
| qemu_log_mask(LOG_GUEST_ERROR, "%s" TARGET_FMT_lx " %s" TARGET_FMT_lx "\n", |
| "SMTE: WPRI violation written 0x", val, |
| "vs expected 0x", wpri_val); |
| } |
| |
| /* if pm.current==0 we can't modify current PM CSRs */ |
| if (check_pm_current_disabled(env, csrno)) { |
| return RISCV_EXCP_NONE; |
| } |
| |
| wpri_val |= (env->mmte & ~SMTE_MASK); |
| write_mmte(env, csrno, wpri_val); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_umte(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->mmte & UMTE_MASK; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_umte(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| target_ulong wpri_val = val & UMTE_MASK; |
| |
| if (val != wpri_val) { |
| qemu_log_mask(LOG_GUEST_ERROR, "%s" TARGET_FMT_lx " %s" TARGET_FMT_lx "\n", |
| "UMTE: WPRI violation written 0x", val, |
| "vs expected 0x", wpri_val); |
| } |
| |
| if (check_pm_current_disabled(env, csrno)) { |
| return RISCV_EXCP_NONE; |
| } |
| |
| wpri_val |= (env->mmte & ~UMTE_MASK); |
| write_mmte(env, csrno, wpri_val); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_mpmmask(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->mpmmask; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_mpmmask(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| uint64_t mstatus; |
| |
| env->mpmmask = val; |
| if ((env->priv == PRV_M) && (env->mmte & M_PM_ENABLE)) { |
| env->cur_pmmask = val; |
| } |
| env->mmte |= PM_EXT_DIRTY; |
| |
| /* Set XS and SD bits, since PM CSRs are dirty */ |
| mstatus = env->mstatus | MSTATUS_XS; |
| write_mstatus(env, csrno, mstatus); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_spmmask(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->spmmask; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_spmmask(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| uint64_t mstatus; |
| |
| /* if pm.current==0 we can't modify current PM CSRs */ |
| if (check_pm_current_disabled(env, csrno)) { |
| return RISCV_EXCP_NONE; |
| } |
| env->spmmask = val; |
| if ((env->priv == PRV_S) && (env->mmte & S_PM_ENABLE)) { |
| env->cur_pmmask = val; |
| } |
| env->mmte |= PM_EXT_DIRTY; |
| |
| /* Set XS and SD bits, since PM CSRs are dirty */ |
| mstatus = env->mstatus | MSTATUS_XS; |
| write_mstatus(env, csrno, mstatus); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_upmmask(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->upmmask; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_upmmask(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| uint64_t mstatus; |
| |
| /* if pm.current==0 we can't modify current PM CSRs */ |
| if (check_pm_current_disabled(env, csrno)) { |
| return RISCV_EXCP_NONE; |
| } |
| env->upmmask = val; |
| if ((env->priv == PRV_U) && (env->mmte & U_PM_ENABLE)) { |
| env->cur_pmmask = val; |
| } |
| env->mmte |= PM_EXT_DIRTY; |
| |
| /* Set XS and SD bits, since PM CSRs are dirty */ |
| mstatus = env->mstatus | MSTATUS_XS; |
| write_mstatus(env, csrno, mstatus); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_mpmbase(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->mpmbase; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_mpmbase(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| uint64_t mstatus; |
| |
| env->mpmbase = val; |
| if ((env->priv == PRV_M) && (env->mmte & M_PM_ENABLE)) { |
| env->cur_pmbase = val; |
| } |
| env->mmte |= PM_EXT_DIRTY; |
| |
| /* Set XS and SD bits, since PM CSRs are dirty */ |
| mstatus = env->mstatus | MSTATUS_XS; |
| write_mstatus(env, csrno, mstatus); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_spmbase(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->spmbase; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_spmbase(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| uint64_t mstatus; |
| |
| /* if pm.current==0 we can't modify current PM CSRs */ |
| if (check_pm_current_disabled(env, csrno)) { |
| return RISCV_EXCP_NONE; |
| } |
| env->spmbase = val; |
| if ((env->priv == PRV_S) && (env->mmte & S_PM_ENABLE)) { |
| env->cur_pmbase = val; |
| } |
| env->mmte |= PM_EXT_DIRTY; |
| |
| /* Set XS and SD bits, since PM CSRs are dirty */ |
| mstatus = env->mstatus | MSTATUS_XS; |
| write_mstatus(env, csrno, mstatus); |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException read_upmbase(CPURISCVState *env, int csrno, |
| target_ulong *val) |
| { |
| *val = env->upmbase; |
| return RISCV_EXCP_NONE; |
| } |
| |
| static RISCVException write_upmbase(CPURISCVState *env, int csrno, |
| target_ulong val) |
| { |
| uint64_t mstatus; |
| |
| /* if pm.current==0 we can't modify current PM CSRs */ |
| if (check_pm_current_disabled(env, csrno)) { |
| return RISCV_EXCP_NONE; |
| } |
| env->upmbase = val; |
| if ((env->priv == PRV_U) && (env->mmte & U_PM_ENABLE)) { |
| env->cur_pmbase = val; |
| } |
| env->mmte |= PM_EXT_DIRTY; |
| |
| /* Set XS and SD bits, since PM CSRs are dirty */ |
| mstatus = env->mstatus | MSTATUS_XS; |
| write_mstatus(env, csrno, mstatus); |
| return RISCV_EXCP_NONE; |
| } |
| |
| #endif |
| |
| /* |
| * riscv_csrrw - read and/or update control and status register |
| * |
| * csrr <-> riscv_csrrw(env, csrno, ret_value, 0, 0); |
| * csrrw <-> riscv_csrrw(env, csrno, ret_value, value, -1); |
| * csrrs <-> riscv_csrrw(env, csrno, ret_value, -1, value); |
| * csrrc <-> riscv_csrrw(env, csrno, ret_value, 0, value); |
| */ |
| |
| static inline RISCVException riscv_csrrw_check(CPURISCVState *env, |
| int csrno, |
| bool write_mask, |
| RISCVCPU *cpu) |
| { |
| /* check privileges and return RISCV_EXCP_ILLEGAL_INST if check fails */ |
| int read_only = get_field(csrno, 0xC00) == 3; |
| #if !defined(CONFIG_USER_ONLY) |
| int effective_priv = env->priv; |
| |
| if (riscv_has_ext(env, RVH) && |
| env->priv == PRV_S && |
| !riscv_cpu_virt_enabled(env)) { |
| /* |
| * We are in S mode without virtualisation, therefore we are in HS Mode. |
| * Add 1 to the effective privledge level to allow us to access the |
| * Hypervisor CSRs. |
| */ |
| effective_priv++; |
| } |
| |
| if (!env->debugger && (effective_priv < get_field(csrno, 0x300))) { |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| #endif |
| if (write_mask && read_only) { |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| |
| /* ensure the CSR extension is enabled. */ |
| if (!cpu->cfg.ext_icsr) { |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| |
| /* check predicate */ |
| if (!csr_ops[csrno].predicate) { |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| |
| return csr_ops[csrno].predicate(env, csrno); |
| } |
| |
| static RISCVException riscv_csrrw_do64(CPURISCVState *env, int csrno, |
| target_ulong *ret_value, |
| target_ulong new_value, |
| target_ulong write_mask) |
| { |
| RISCVException ret; |
| target_ulong old_value; |
| |
| /* execute combined read/write operation if it exists */ |
| if (csr_ops[csrno].op) { |
| return csr_ops[csrno].op(env, csrno, ret_value, new_value, write_mask); |
| } |
| |
| /* if no accessor exists then return failure */ |
| if (!csr_ops[csrno].read) { |
| return RISCV_EXCP_ILLEGAL_INST; |
| } |
| /* read old value */ |
| ret = csr_ops[csrno].read(env, csrno, &old_value); |
| if (ret != RISCV_EXCP_NONE) { |
| return ret; |
| } |
| |
| /* write value if writable and write mask set, otherwise drop writes */ |
| if (write_mask) { |
| new_value = (old_value & ~write_mask) | (new_value & write_mask); |
| if (csr_ops[csrno].write) { |
| ret = csr_ops[csrno].write(env, csrno, new_value); |
| if (ret != RISCV_EXCP_NONE) { |
| return ret; |
| } |
| } |
| } |
| |
| /* return old value */ |
| if (ret_value) { |
| *ret_value = old_value; |
| } |
| |
| return RISCV_EXCP_NONE; |
| } |
| |
| RISCVException riscv_csrrw(CPURISCVState *env, int csrno, |
| target_ulong *ret_value, |
| target_ulong new_value, target_ulong write_mask) |
| { |
| RISCVCPU *cpu = env_archcpu(env); |
| |
| RISCVException ret = riscv_csrrw_check(env, csrno, write_mask, cpu); |
| if (ret != RISCV_EXCP_NONE) { |
| return ret; |
| } |
| |
| return riscv_csrrw_do64(env, csrno, ret_value, new_value, write_mask); |
| } |
| |
| static RISCVException riscv_csrrw_do128(CPURISCVState *env, int csrno, |
| Int128 *ret_value, |
| Int128 new_value, |
| Int128 write_mask) |
| { |
| RISCVException ret; |
| Int128 old_value; |
| |
| /* read old value */ |
| ret = csr_ops[csrno].read128(env, csrno, &old_value); |
| if (ret != RISCV_EXCP_NONE) { |
| return ret; |
| } |
| |
| /* write value if writable and write mask set, otherwise drop writes */ |
| if (int128_nz(write_mask)) { |
| new_value = int128_or(int128_and(old_value, int128_not(write_mask)), |
| int128_and(new_value, write_mask)); |
| if (csr_ops[csrno].write128) { |
| ret = csr_ops[csrno].write128(env, csrno, new_value); |
| if (ret != RISCV_EXCP_NONE) { |
| return ret; |
| } |
| } else if (csr_ops[csrno].write) { |
| /* avoids having to write wrappers for all registers */ |
| ret = csr_ops[csrno].write(env, csrno, int128_getlo(new_value)); |
| if (ret != RISCV_EXCP_NONE) { |
| return ret; |
| } |
| } |
| } |
| |
| /* return old value */ |
| if (ret_value) { |
| *ret_value = old_value; |
| } |
| |
| return RISCV_EXCP_NONE; |
| } |
| |
| RISCVException riscv_csrrw_i128(CPURISCVState *env, int csrno, |
| Int128 *ret_value, |
| Int128 new_value, Int128 write_mask) |
| { |
| RISCVException ret; |
| RISCVCPU *cpu = env_archcpu(env); |
| |
| ret = riscv_csrrw_check(env, csrno, int128_nz(write_mask), cpu); |
| if (ret != RISCV_EXCP_NONE) { |
| return ret; |
| } |
| |
| if (csr_ops[csrno].read128) { |
| return riscv_csrrw_do128(env, csrno, ret_value, new_value, write_mask); |
| } |
| |
| /* |
| * Fall back to 64-bit version for now, if the 128-bit alternative isn't |
| * at all defined. |
| * Note, some CSRs don't need to extend to MXLEN (64 upper bits non |
| * significant), for those, this fallback is correctly handling the accesses |
| */ |
| target_ulong old_value; |
| ret = riscv_csrrw_do64(env, csrno, &old_value, |
| int128_getlo(new_value), |
| int128_getlo(write_mask)); |
| if (ret == RISCV_EXCP_NONE && ret_value) { |
| *ret_value = int128_make64(old_value); |
| } |
| return ret; |
| } |
| |
| /* |
| * Debugger support. If not in user mode, set env->debugger before the |
| * riscv_csrrw call and clear it after the call. |
| */ |
| RISCVException riscv_csrrw_debug(CPURISCVState *env, int csrno, |
| target_ulong *ret_value, |
| target_ulong new_value, |
| target_ulong write_mask) |
| { |
| RISCVException ret; |
| #if !defined(CONFIG_USER_ONLY) |
| env->debugger = true; |
| #endif |
| ret = riscv_csrrw(env, csrno, ret_value, new_value, write_mask); |
| #if !defined(CONFIG_USER_ONLY) |
| env->debugger = false; |
| #endif |
| return ret; |
| } |
| |
| /* Control and Status Register function table */ |
| riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = { |
| /* User Floating-Point CSRs */ |
| [CSR_FFLAGS] = { "fflags", fs, read_fflags, write_fflags }, |
| [CSR_FRM] = { "frm", fs, read_frm, write_frm }, |
| [CSR_FCSR] = { "fcsr", fs, read_fcsr, write_fcsr }, |
| /* Vector CSRs */ |
| [CSR_VSTART] = { "vstart", vs, read_vstart, write_vstart }, |
| [CSR_VXSAT] = { "vxsat", vs, read_vxsat, write_vxsat }, |
| [CSR_VXRM] = { "vxrm", vs, read_vxrm, write_vxrm }, |
| [CSR_VCSR] = { "vcsr", vs, read_vcsr, write_vcsr }, |
| [CSR_VL] = { "vl", vs, read_vl }, |
| [CSR_VTYPE] = { "vtype", vs, read_vtype }, |
| [CSR_VLENB] = { "vlenb", vs, read_vlenb }, |
| /* User Timers and Counters */ |
| [CSR_CYCLE] = { "cycle", ctr, read_instret }, |
| [CSR_INSTRET] = { "instret", ctr, read_instret }, |
| [CSR_CYCLEH] = { "cycleh", ctr32, read_instreth }, |
| [CSR_INSTRETH] = { "instreth", ctr32, read_instreth }, |
| |
| /* |
| * In privileged mode, the monitor will have to emulate TIME CSRs only if |
| * rdtime callback is not provided by machine/platform emulation. |
| */ |
| [CSR_TIME] = { "time", ctr, read_time }, |
| [CSR_TIMEH] = { "timeh", ctr32, read_timeh }, |
| |
| #if !defined(CONFIG_USER_ONLY) |
| /* Machine Timers and Counters */ |
| [CSR_MCYCLE] = { "mcycle", any, read_instret }, |
| [CSR_MINSTRET] = { "minstret", any, read_instret }, |
| [CSR_MCYCLEH] = { "mcycleh", any32, read_instreth }, |
| [CSR_MINSTRETH] = { "minstreth", any32, read_instreth }, |
| |
| /* Machine Information Registers */ |
| [CSR_MVENDORID] = { "mvendorid", any, read_zero }, |
| [CSR_MARCHID] = { "marchid", any, read_zero }, |
| [CSR_MIMPID] = { "mimpid", any, read_zero }, |
| [CSR_MHARTID] = { "mhartid", any, read_mhartid }, |
| |
| /* Machine Trap Setup */ |
| [CSR_MSTATUS] = { "mstatus", any, read_mstatus, write_mstatus, NULL, |
| read_mstatus_i128 }, |
| [CSR_MISA] = { "misa", any, read_misa, write_misa, NULL, |
| read_misa_i128 }, |
| [CSR_MIDELEG] = { "mideleg", any, read_mideleg, write_mideleg }, |
| [CSR_MEDELEG] = { "medeleg", any, read_medeleg, write_medeleg }, |
| [CSR_MIE] = { "mie", any, read_mie, write_mie }, |
| [CSR_MTVEC] = { "mtvec", any, read_mtvec, write_mtvec }, |
| [CSR_MCOUNTEREN] = { "mcounteren", any, read_mcounteren, write_mcounteren }, |
| |
| [CSR_MSTATUSH] = { "mstatush", any32, read_mstatush, write_mstatush }, |
| |
| /* Machine Trap Handling */ |
| [CSR_MSCRATCH] = { "mscratch", any, read_mscratch, write_mscratch, NULL, |
| read_mscratch_i128, write_mscratch_i128 }, |
| [CSR_MEPC] = { "mepc", any, read_mepc, write_mepc }, |
| [CSR_MCAUSE] = { "mcause", any, read_mcause, write_mcause }, |
| [CSR_MTVAL] = { "mtval", any, read_mtval, write_mtval }, |
| [CSR_MIP] = { "mip", any, NULL, NULL, rmw_mip }, |
| |
| /* Supervisor Trap Setup */ |
| [CSR_SSTATUS] = { "sstatus", smode, read_sstatus, write_sstatus, NULL, |
| read_sstatus_i128 }, |
| [CSR_SIE] = { "sie", smode, read_sie, write_sie }, |
| [CSR_STVEC] = { "stvec", smode, read_stvec, write_stvec }, |
| [CSR_SCOUNTEREN] = { "scounteren", smode, read_scounteren, write_scounteren }, |
| |
| /* Supervisor Trap Handling */ |
| [CSR_SSCRATCH] = { "sscratch", smode, read_sscratch, write_sscratch, NULL, |
| read_sscratch_i128, write_sscratch_i128 }, |
| [CSR_SEPC] = { "sepc", smode, read_sepc, write_sepc }, |
| [CSR_SCAUSE] = { "scause", smode, read_scause, write_scause }, |
| [CSR_STVAL] = { "stval", smode, read_stval, write_stval }, |
| [CSR_SIP] = { "sip", smode, NULL, NULL, rmw_sip }, |
| |
| /* Supervisor Protection and Translation */ |
| [CSR_SATP] = { "satp", smode, read_satp, write_satp }, |
| |
| [CSR_HSTATUS] = { "hstatus", hmode, read_hstatus, write_hstatus }, |
| [CSR_HEDELEG] = { "hedeleg", hmode, read_hedeleg, write_hedeleg }, |
| [CSR_HIDELEG] = { "hideleg", hmode, read_hideleg, write_hideleg }, |
| [CSR_HVIP] = { "hvip", hmode, NULL, NULL, rmw_hvip }, |
| [CSR_HIP] = { "hip", hmode, NULL, NULL, rmw_hip }, |
| [CSR_HIE] = { "hie", hmode, read_hie, write_hie }, |
| [CSR_HCOUNTEREN] = { "hcounteren", hmode, read_hcounteren, write_hcounteren }, |
| [CSR_HGEIE] = { "hgeie", hmode, read_zero, write_hgeie }, |
| [CSR_HTVAL] = { "htval", hmode, read_htval, write_htval }, |
| [CSR_HTINST] = { "htinst", hmode, read_htinst, write_htinst }, |
| [CSR_HGEIP] = { "hgeip", hmode, read_zero, write_hgeip }, |
| [CSR_HGATP] = { "hgatp", hmode, read_hgatp, write_hgatp }, |
| [CSR_HTIMEDELTA] = { "htimedelta", hmode, read_htimedelta, write_htimedelta }, |
| [CSR_HTIMEDELTAH] = { "htimedeltah", hmode32, read_htimedeltah, write_htimedeltah }, |
| |
| [CSR_VSSTATUS] = { "vsstatus", hmode, read_vsstatus, write_vsstatus }, |
| [CSR_VSIP] = { "vsip", hmode, NULL, NULL, rmw_vsip }, |
| [CSR_VSIE] = { "vsie", hmode, read_vsie, write_vsie }, |
| [CSR_VSTVEC] = { "vstvec", hmode, read_vstvec, write_vstvec }, |
| [CSR_VSSCRATCH] = { "vsscratch", hmode, read_vsscratch, write_vsscratch }, |
| [CSR_VSEPC] = { "vsepc", hmode, read_vsepc, write_vsepc }, |
| [CSR_VSCAUSE] = { "vscause", hmode, read_vscause, write_vscause }, |
| [CSR_VSTVAL] = { "vstval", hmode, read_vstval, write_vstval }, |
| [CSR_VSATP] = { "vsatp", hmode, read_vsatp, write_vsatp }, |
| |
| [CSR_MTVAL2] = { "mtval2", hmode, read_mtval2, write_mtval2 }, |
| [CSR_MTINST] = { "mtinst", hmode, read_mtinst, write_mtinst }, |
| |
| /* Physical Memory Protection */ |
| [CSR_MSECCFG] = { "mseccfg", epmp, read_mseccfg, write_mseccfg }, |
| [CSR_PMPCFG0] = { "pmpcfg0", pmp, read_pmpcfg, write_pmpcfg }, |
| [CSR_PMPCFG1] = { "pmpcfg1", pmp, read_pmpcfg, write_pmpcfg }, |
| [CSR_PMPCFG2] = { "pmpcfg2", pmp, read_pmpcfg, write_pmpcfg }, |
| [CSR_PMPCFG3] = { "pmpcfg3", pmp, read_pmpcfg, write_pmpcfg }, |
| [CSR_PMPADDR0] = { "pmpaddr0", pmp, read_pmpaddr, write_pmpaddr }, |
| [CSR_PMPADDR1] = { "pmpaddr1", pmp, read_pmpaddr, write_pmpaddr }, |
| [CSR_PMPADDR2] = { "pmpaddr2", pmp, read_pmpaddr, write_pmpaddr }, |
| [CSR_PMPADDR3] = { "pmpaddr3", pmp, read_pmpaddr, write_pmpaddr }, |
| [CSR_PMPADDR4] = { "pmpaddr4", pmp, read_pmpaddr, write_pmpaddr }, |
| [CSR_PMPADDR5] = { "pmpaddr5", pmp, read_pmpaddr, write_pmpaddr }, |
| [CSR_PMPADDR6] = { "pmpaddr6", pmp, read_pmpaddr, write_pmpaddr }, |
| [CSR_PMPADDR7] = { "pmpaddr7", pmp, read_pmpaddr, write_pmpaddr }, |
| [CSR_PMPADDR8] = { "pmpaddr8", pmp, read_pmpaddr, write_pmpaddr }, |
| [CSR_PMPADDR9] = { "pmpaddr9", pmp, read_pmpaddr, write_pmpaddr }, |
| [CSR_PMPADDR10] = { "pmpaddr10", pmp, read_pmpaddr, write_pmpaddr }, |
| [CSR_PMPADDR11] = { "pmpaddr11", pmp, read_pmpaddr, write_pmpaddr }, |
| [CSR_PMPADDR12] = { "pmpaddr12", pmp, read_pmpaddr, write_pmpaddr }, |
| [CSR_PMPADDR13] = { "pmpaddr13", pmp, read_pmpaddr, write_pmpaddr }, |
| [CSR_PMPADDR14] = { "pmpaddr14", pmp, read_pmpaddr, write_pmpaddr }, |
| [CSR_PMPADDR15] = { "pmpaddr15", pmp, read_pmpaddr, write_pmpaddr }, |
| |
| /* User Pointer Masking */ |
| [CSR_UMTE] = { "umte", pointer_masking, read_umte, write_umte }, |
| [CSR_UPMMASK] = { "upmmask", pointer_masking, read_upmmask, write_upmmask }, |
| [CSR_UPMBASE] = { "upmbase", pointer_masking, read_upmbase, write_upmbase }, |
| /* Machine Pointer Masking */ |
| [CSR_MMTE] = { "mmte", pointer_masking, read_mmte, write_mmte }, |
| [CSR_MPMMASK] = { "mpmmask", pointer_masking, read_mpmmask, write_mpmmask }, |
| [CSR_MPMBASE] = { "mpmbase", pointer_masking, read_mpmbase, write_mpmbase }, |
| /* Supervisor Pointer Masking */ |
| [CSR_SMTE] = { "smte", pointer_masking, read_smte, write_smte }, |
| [CSR_SPMMASK] = { "spmmask", pointer_masking, read_spmmask, write_spmmask }, |
| [CSR_SPMBASE] = { "spmbase", pointer_masking, read_spmbase, write_spmbase }, |
| |
| /* Performance Counters */ |
| [CSR_HPMCOUNTER3] = { "hpmcounter3", ctr, read_zero }, |
| [CSR_HPMCOUNTER4] = { "hpmcounter4", ctr, read_zero }, |
| [CSR_HPMCOUNTER5] = { "hpmcounter5", ctr, read_zero }, |
| [CSR_HPMCOUNTER6] = { "hpmcounter6", ctr, read_zero }, |
| [CSR_HPMCOUNTER7] = { "hpmcounter7", ctr, read_zero }, |
| [CSR_HPMCOUNTER8] = { "hpmcounter8", ctr, read_zero }, |
| [CSR_HPMCOUNTER9] = { "hpmcounter9", ctr, read_zero }, |
| [CSR_HPMCOUNTER10] = { "hpmcounter10", ctr, read_zero }, |
| [CSR_HPMCOUNTER11] = { "hpmcounter11", ctr, read_zero }, |
| [CSR_HPMCOUNTER12] = { "hpmcounter12", ctr, read_zero }, |
| [CSR_HPMCOUNTER13] = { "hpmcounter13", ctr, read_zero }, |
| [CSR_HPMCOUNTER14] = { "hpmcounter14", ctr, read_zero }, |
| [CSR_HPMCOUNTER15] = { "hpmcounter15", ctr, read_zero }, |
| [CSR_HPMCOUNTER16] = { "hpmcounter16", ctr, read_zero }, |
| [CSR_HPMCOUNTER17] = { "hpmcounter17", ctr, read_zero }, |
| [CSR_HPMCOUNTER18] = { "hpmcounter18", ctr, read_zero }, |
| [CSR_HPMCOUNTER19] = { "hpmcounter19", ctr, read_zero }, |
| [CSR_HPMCOUNTER20] = { "hpmcounter20", ctr, read_zero }, |
| [CSR_HPMCOUNTER21] = { "hpmcounter21", ctr, read_zero }, |
| [CSR_HPMCOUNTER22] = { "hpmcounter22", ctr, read_zero }, |
| [CSR_HPMCOUNTER23] = { "hpmcounter23", ctr, read_zero }, |
| [CSR_HPMCOUNTER24] = { "hpmcounter24", ctr, read_zero }, |
| [CSR_HPMCOUNTER25] = { "hpmcounter25", ctr, read_zero }, |
| [CSR_HPMCOUNTER26] = { "hpmcounter26", ctr, read_zero }, |
| [CSR_HPMCOUNTER27] = { "hpmcounter27", ctr, read_zero }, |
| [CSR_HPMCOUNTER28] = { "hpmcounter28", ctr, read_zero }, |
| [CSR_HPMCOUNTER29] = { "hpmcounter29", ctr, read_zero }, |
| [CSR_HPMCOUNTER30] = { "hpmcounter30", ctr, read_zero }, |
| [CSR_HPMCOUNTER31] = { "hpmcounter31", ctr, read_zero }, |
| |
| [CSR_MHPMCOUNTER3] = { "mhpmcounter3", any, read_zero }, |
| [CSR_MHPMCOUNTER4] = { "mhpmcounter4", any, read_zero }, |
| [CSR_MHPMCOUNTER5] = { "mhpmcounter5", any, read_zero }, |
| [CSR_MHPMCOUNTER6] = { "mhpmcounter6", any, read_zero }, |
| [CSR_MHPMCOUNTER7] = { "mhpmcounter7", any, read_zero }, |
| [CSR_MHPMCOUNTER8] = { "mhpmcounter8", any, read_zero }, |
| [CSR_MHPMCOUNTER9] = { "mhpmcounter9", any, read_zero }, |
| [CSR_MHPMCOUNTER10] = { "mhpmcounter10", any, read_zero }, |
| [CSR_MHPMCOUNTER11] = { "mhpmcounter11", any, read_zero }, |
| [CSR_MHPMCOUNTER12] = { "mhpmcounter12", any, read_zero }, |
| [CSR_MHPMCOUNTER13] = { "mhpmcounter13", any, read_zero }, |
| [CSR_MHPMCOUNTER14] = { "mhpmcounter14", any, read_zero }, |
| [CSR_MHPMCOUNTER15] = { "mhpmcounter15", any, read_zero }, |
| [CSR_MHPMCOUNTER16] = { "mhpmcounter16", any, read_zero }, |
| [CSR_MHPMCOUNTER17] = { "mhpmcounter17", any, read_zero }, |
| [CSR_MHPMCOUNTER18] = { "mhpmcounter18", any, read_zero }, |
| [CSR_MHPMCOUNTER19] = { "mhpmcounter19", any, read_zero }, |
| [CSR_MHPMCOUNTER20] = { "mhpmcounter20", any, read_zero }, |
| [CSR_MHPMCOUNTER21] = { "mhpmcounter21", any, read_zero }, |
| [CSR_MHPMCOUNTER22] = { "mhpmcounter22", any, read_zero }, |
| [CSR_MHPMCOUNTER23] = { "mhpmcounter23", any, read_zero }, |
| [CSR_MHPMCOUNTER24] = { "mhpmcounter24", any, read_zero }, |
| [CSR_MHPMCOUNTER25] = { "mhpmcounter25", any, read_zero }, |
| [CSR_MHPMCOUNTER26] = { "mhpmcounter26", any, read_zero }, |
| [CSR_MHPMCOUNTER27] = { "mhpmcounter27", any, read_zero }, |
| [CSR_MHPMCOUNTER28] = { "mhpmcounter28", any, read_zero }, |
| [CSR_MHPMCOUNTER29] = { "mhpmcounter29", any, read_zero }, |
| [CSR_MHPMCOUNTER30] = { "mhpmcounter30", any, read_zero }, |
| [CSR_MHPMCOUNTER31] = { "mhpmcounter31", any, read_zero }, |
| |
| [CSR_MHPMEVENT3] = { "mhpmevent3", any, read_zero }, |
| [CSR_MHPMEVENT4] = { "mhpmevent4", any, read_zero }, |
| [CSR_MHPMEVENT5] = { "mhpmevent5", any, read_zero }, |
| [CSR_MHPMEVENT6] = { "mhpmevent6", any, read_zero }, |
| [CSR_MHPMEVENT7] = { "mhpmevent7", any, read_zero }, |
| [CSR_MHPMEVENT8] = { "mhpmevent8", any, read_zero }, |
| [CSR_MHPMEVENT9] = { "mhpmevent9", any, read_zero }, |
| [CSR_MHPMEVENT10] = { "mhpmevent10", any, read_zero }, |
| [CSR_MHPMEVENT11] = { "mhpmevent11", any, read_zero }, |
| [CSR_MHPMEVENT12] = { "mhpmevent12", any, read_zero }, |
| [CSR_MHPMEVENT13] = { "mhpmevent13", any, read_zero }, |
| [CSR_MHPMEVENT14] = { "mhpmevent14", any, read_zero }, |
| [CSR_MHPMEVENT15] = { "mhpmevent15", any, read_zero }, |
| [CSR_MHPMEVENT16] = { "mhpmevent16", any, read_zero }, |
| [CSR_MHPMEVENT17] = { "mhpmevent17", any, read_zero }, |
| [CSR_MHPMEVENT18] = { "mhpmevent18", any, read_zero }, |
| [CSR_MHPMEVENT19] = { "mhpmevent19", any, read_zero }, |
| [CSR_MHPMEVENT20] = { "mhpmevent20", any, read_zero }, |
| [CSR_MHPMEVENT21] = { "mhpmevent21", any, read_zero }, |
| [CSR_MHPMEVENT22] = { "mhpmevent22", any, read_zero }, |
| [CSR_MHPMEVENT23] = { "mhpmevent23", any, read_zero }, |
| [CSR_MHPMEVENT24] = { "mhpmevent24", any, read_zero }, |
| [CSR_MHPMEVENT25] = { "mhpmevent25", any, read_zero }, |
| [CSR_MHPMEVENT26] = { "mhpmevent26", any, read_zero }, |
| [CSR_MHPMEVENT27] = { "mhpmevent27", any, read_zero }, |
| [CSR_MHPMEVENT28] = { "mhpmevent28", any, read_zero }, |
| [CSR_MHPMEVENT29] = { "mhpmevent29", any, read_zero }, |
| [CSR_MHPMEVENT30] = { "mhpmevent30", any, read_zero }, |
| [CSR_MHPMEVENT31] = { "mhpmevent31", any, read_zero }, |
| |
| [CSR_HPMCOUNTER3H] = { "hpmcounter3h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER4H] = { "hpmcounter4h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER5H] = { "hpmcounter5h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER6H] = { "hpmcounter6h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER7H] = { "hpmcounter7h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER8H] = { "hpmcounter8h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER9H] = { "hpmcounter9h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER10H] = { "hpmcounter10h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER11H] = { "hpmcounter11h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER12H] = { "hpmcounter12h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER13H] = { "hpmcounter13h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER14H] = { "hpmcounter14h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER15H] = { "hpmcounter15h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER16H] = { "hpmcounter16h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER17H] = { "hpmcounter17h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER18H] = { "hpmcounter18h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER19H] = { "hpmcounter19h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER20H] = { "hpmcounter20h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER21H] = { "hpmcounter21h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER22H] = { "hpmcounter22h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER23H] = { "hpmcounter23h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER24H] = { "hpmcounter24h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER25H] = { "hpmcounter25h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER26H] = { "hpmcounter26h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER27H] = { "hpmcounter27h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER28H] = { "hpmcounter28h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER29H] = { "hpmcounter29h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER30H] = { "hpmcounter30h", ctr32, read_zero }, |
| [CSR_HPMCOUNTER31H] = { "hpmcounter31h", ctr32, read_zero }, |
| |
| [CSR_MHPMCOUNTER3H] = { "mhpmcounter3h", any32, read_zero }, |
| [CSR_MHPMCOUNTER4H] = { "mhpmcounter4h", any32, read_zero }, |
| [CSR_MHPMCOUNTER5H] = { "mhpmcounter5h", any32, read_zero }, |
| [CSR_MHPMCOUNTER6H] = { "mhpmcounter6h", any32, read_zero }, |
| [CSR_MHPMCOUNTER7H] = { "mhpmcounter7h", any32, read_zero }, |
| [CSR_MHPMCOUNTER8H] = { "mhpmcounter8h", any32, read_zero }, |
| [CSR_MHPMCOUNTER9H] = { "mhpmcounter9h", any32, read_zero }, |
| [CSR_MHPMCOUNTER10H] = { "mhpmcounter10h", any32, read_zero }, |
| [CSR_MHPMCOUNTER11H] = { "mhpmcounter11h", any32, read_zero }, |
| [CSR_MHPMCOUNTER12H] = { "mhpmcounter12h", any32, read_zero }, |
| [CSR_MHPMCOUNTER13H] = { "mhpmcounter13h", any32, read_zero }, |
| [CSR_MHPMCOUNTER14H] = { "mhpmcounter14h", any32, read_zero }, |
| [CSR_MHPMCOUNTER15H] = { "mhpmcounter15h", any32, read_zero }, |
| [CSR_MHPMCOUNTER16H] = { "mhpmcounter16h", any32, read_zero }, |
| [CSR_MHPMCOUNTER17H] = { "mhpmcounter17h", any32, read_zero }, |
| [CSR_MHPMCOUNTER18H] = { "mhpmcounter18h", any32, read_zero }, |
| [CSR_MHPMCOUNTER19H] = { "mhpmcounter19h", any32, read_zero }, |
| [CSR_MHPMCOUNTER20H] = { "mhpmcounter20h", any32, read_zero }, |
| [CSR_MHPMCOUNTER21H] = { "mhpmcounter21h", any32, read_zero }, |
| [CSR_MHPMCOUNTER22H] = { "mhpmcounter22h", any32, read_zero }, |
| [CSR_MHPMCOUNTER23H] = { "mhpmcounter23h", any32, read_zero }, |
| [CSR_MHPMCOUNTER24H] = { "mhpmcounter24h", any32, read_zero }, |
| [CSR_MHPMCOUNTER25H] = { "mhpmcounter25h", any32, read_zero }, |
| [CSR_MHPMCOUNTER26H] = { "mhpmcounter26h", any32, read_zero }, |
| [CSR_MHPMCOUNTER27H] = { "mhpmcounter27h", any32, read_zero }, |
| [CSR_MHPMCOUNTER28H] = { "mhpmcounter28h", any32, read_zero }, |
| [CSR_MHPMCOUNTER29H] = { "mhpmcounter29h", any32, read_zero }, |
| [CSR_MHPMCOUNTER30H] = { "mhpmcounter30h", any32, read_zero }, |
| [CSR_MHPMCOUNTER31H] = { "mhpmcounter31h", any32, read_zero }, |
| #endif /* !CONFIG_USER_ONLY */ |
| }; |
