diff options
Diffstat (limited to 'target/riscv/csr.c')
| -rw-r--r-- | target/riscv/csr.c | 176 |
1 files changed, 91 insertions, 85 deletions
diff --git a/target/riscv/csr.c b/target/riscv/csr.c index 93263f8e06..10ab82ed1f 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -102,44 +102,65 @@ static int ctr(CPURISCVState *env, int csrno) return -RISCV_EXCP_VIRT_INSTRUCTION_FAULT; } break; -#if defined(TARGET_RISCV32) - case CSR_CYCLEH: - if (!get_field(env->hcounteren, HCOUNTEREN_CY) && - get_field(env->mcounteren, HCOUNTEREN_CY)) { - return -RISCV_EXCP_VIRT_INSTRUCTION_FAULT; - } - break; - case CSR_TIMEH: - if (!get_field(env->hcounteren, HCOUNTEREN_TM) && - get_field(env->mcounteren, HCOUNTEREN_TM)) { - return -RISCV_EXCP_VIRT_INSTRUCTION_FAULT; - } - break; - case CSR_INSTRETH: - if (!get_field(env->hcounteren, HCOUNTEREN_IR) && - get_field(env->mcounteren, HCOUNTEREN_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; + } + if (riscv_cpu_is_32bit(env)) { + switch (csrno) { + case CSR_CYCLEH: + if (!get_field(env->hcounteren, HCOUNTEREN_CY) && + get_field(env->mcounteren, HCOUNTEREN_CY)) { + return -RISCV_EXCP_VIRT_INSTRUCTION_FAULT; + } + break; + case CSR_TIMEH: + if (!get_field(env->hcounteren, HCOUNTEREN_TM) && + get_field(env->mcounteren, HCOUNTEREN_TM)) { + return -RISCV_EXCP_VIRT_INSTRUCTION_FAULT; + } + break; + case CSR_INSTRETH: + if (!get_field(env->hcounteren, HCOUNTEREN_IR) && + get_field(env->mcounteren, HCOUNTEREN_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; } - break; -#endif } } #endif return 0; } +static int ctr32(CPURISCVState *env, int csrno) +{ + if (!riscv_cpu_is_32bit(env)) { + return -RISCV_EXCP_ILLEGAL_INST; + } + + return ctr(env, csrno); +} + #if !defined(CONFIG_USER_ONLY) static int any(CPURISCVState *env, int csrno) { return 0; } +static int any32(CPURISCVState *env, int csrno) +{ + if (!riscv_cpu_is_32bit(env)) { + return -RISCV_EXCP_ILLEGAL_INST; + } + + return any(env, csrno); + +} + static int smode(CPURISCVState *env, int csrno) { return -!riscv_has_ext(env, RVS); @@ -161,6 +182,16 @@ static int hmode(CPURISCVState *env, int csrno) return -RISCV_EXCP_ILLEGAL_INST; } +static int hmode32(CPURISCVState *env, int csrno) +{ + if (!riscv_cpu_is_32bit(env)) { + return 0; + } + + return hmode(env, csrno); + +} + static int pmp(CPURISCVState *env, int csrno) { return -!riscv_feature(env, RISCV_FEATURE_PMP); @@ -310,7 +341,6 @@ static int read_instret(CPURISCVState *env, int csrno, target_ulong *val) return 0; } -#if defined(TARGET_RISCV32) static int read_instreth(CPURISCVState *env, int csrno, target_ulong *val) { #if !defined(CONFIG_USER_ONLY) @@ -324,7 +354,6 @@ static int read_instreth(CPURISCVState *env, int csrno, target_ulong *val) #endif return 0; } -#endif /* TARGET_RISCV32 */ #if defined(CONFIG_USER_ONLY) static int read_time(CPURISCVState *env, int csrno, target_ulong *val) @@ -333,13 +362,11 @@ static int read_time(CPURISCVState *env, int csrno, target_ulong *val) return 0; } -#if defined(TARGET_RISCV32) static int read_timeh(CPURISCVState *env, int csrno, target_ulong *val) { *val = cpu_get_host_ticks() >> 32; return 0; } -#endif #else /* CONFIG_USER_ONLY */ @@ -355,7 +382,6 @@ static int read_time(CPURISCVState *env, int csrno, target_ulong *val) return 0; } -#if defined(TARGET_RISCV32) static int read_timeh(CPURISCVState *env, int csrno, target_ulong *val) { uint64_t delta = riscv_cpu_virt_enabled(env) ? env->htimedelta : 0; @@ -367,7 +393,6 @@ static int read_timeh(CPURISCVState *env, int csrno, target_ulong *val) *val = (env->rdtime_fn(env->rdtime_fn_arg) + delta) >> 32; return 0; } -#endif /* Machine constants */ @@ -406,19 +431,17 @@ static const target_ulong sip_writable_mask = SIP_SSIP | MIP_USIP | MIP_UEIP; static const target_ulong hip_writable_mask = MIP_VSSIP | MIP_VSTIP | MIP_VSEIP; static const target_ulong vsip_writable_mask = MIP_VSSIP; -#if defined(TARGET_RISCV32) -static const char valid_vm_1_10[16] = { +static const char valid_vm_1_10_32[16] = { [VM_1_10_MBARE] = 1, [VM_1_10_SV32] = 1 }; -#elif defined(TARGET_RISCV64) -static const char valid_vm_1_10[16] = { + +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 }; -#endif /* CONFIG_USER_ONLY */ /* Machine Information Registers */ static int read_zero(CPURISCVState *env, int csrno, target_ulong *val) @@ -441,7 +464,11 @@ static int read_mstatus(CPURISCVState *env, int csrno, target_ulong *val) static int validate_vm(CPURISCVState *env, target_ulong vm) { - return valid_vm_1_10[vm & 0xf]; + if (riscv_cpu_is_32bit(env)) { + return valid_vm_1_10_32[vm & 0xf]; + } else { + return valid_vm_1_10_64[vm & 0xf]; + } } static int write_mstatus(CPURISCVState *env, int csrno, target_ulong val) @@ -459,13 +486,14 @@ static int write_mstatus(CPURISCVState *env, int csrno, target_ulong val) MSTATUS_SPP | MSTATUS_FS | MSTATUS_MPRV | MSTATUS_SUM | MSTATUS_MPP | MSTATUS_MXR | MSTATUS_TVM | MSTATUS_TSR | MSTATUS_TW; -#if defined(TARGET_RISCV64) - /* - * 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; -#endif + + if (!riscv_cpu_is_32bit(env)) { + /* + * 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; + } mstatus = (mstatus & ~mask) | (val & mask); @@ -477,7 +505,6 @@ static int write_mstatus(CPURISCVState *env, int csrno, target_ulong val) return 0; } -#ifdef TARGET_RISCV32 static int read_mstatush(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->mstatus >> 32; @@ -497,7 +524,6 @@ static int write_mstatush(CPURISCVState *env, int csrno, target_ulong val) return 0; } -#endif static int read_misa(CPURISCVState *env, int csrno, target_ulong *val) { @@ -895,10 +921,10 @@ static int write_satp(CPURISCVState *env, int csrno, target_ulong val) static int read_hstatus(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->hstatus; -#ifdef TARGET_RISCV64 - /* We only support 64-bit VSXL */ - *val = set_field(*val, HSTATUS_VSXL, 2); -#endif + if (!riscv_cpu_is_32bit(env)) { + /* 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 0; @@ -907,11 +933,9 @@ static int read_hstatus(CPURISCVState *env, int csrno, target_ulong *val) static int write_hstatus(CPURISCVState *env, int csrno, target_ulong val) { env->hstatus = val; -#ifdef TARGET_RISCV64 - if (get_field(val, HSTATUS_VSXL) != 2) { + if (!riscv_cpu_is_32bit(env) && get_field(val, HSTATUS_VSXL) != 2) { qemu_log_mask(LOG_UNIMP, "QEMU does not support mixed HSXLEN options."); } -#endif if (get_field(val, HSTATUS_VSBE) != 0) { qemu_log_mask(LOG_UNIMP, "QEMU does not support big endian guests."); } @@ -1053,11 +1077,7 @@ static int read_htimedelta(CPURISCVState *env, int csrno, target_ulong *val) return -RISCV_EXCP_ILLEGAL_INST; } -#if defined(TARGET_RISCV32) - *val = env->htimedelta & 0xffffffff; -#else *val = env->htimedelta; -#endif return 0; } @@ -1067,15 +1087,14 @@ static int write_htimedelta(CPURISCVState *env, int csrno, target_ulong val) return -RISCV_EXCP_ILLEGAL_INST; } -#if defined(TARGET_RISCV32) - env->htimedelta = deposit64(env->htimedelta, 0, 32, (uint64_t)val); -#else - env->htimedelta = val; -#endif + if (riscv_cpu_is_32bit(env)) { + env->htimedelta = deposit64(env->htimedelta, 0, 32, (uint64_t)val); + } else { + env->htimedelta = val; + } return 0; } -#if defined(TARGET_RISCV32) static int read_htimedeltah(CPURISCVState *env, int csrno, target_ulong *val) { if (!env->rdtime_fn) { @@ -1095,7 +1114,6 @@ static int write_htimedeltah(CPURISCVState *env, int csrno, target_ulong val) env->htimedelta = deposit64(env->htimedelta, 32, 32, (uint64_t)val); return 0; } -#endif /* Virtual CSR Registers */ static int read_vsstatus(CPURISCVState *env, int csrno, target_ulong *val) @@ -1374,26 +1392,20 @@ static riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = { /* User Timers and Counters */ [CSR_CYCLE] = { ctr, read_instret }, [CSR_INSTRET] = { ctr, read_instret }, -#if defined(TARGET_RISCV32) - [CSR_CYCLEH] = { ctr, read_instreth }, - [CSR_INSTRETH] = { ctr, read_instreth }, -#endif + [CSR_CYCLEH] = { ctr32, read_instreth }, + [CSR_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] = { ctr, read_time }, -#if defined(TARGET_RISCV32) - [CSR_TIMEH] = { ctr, read_timeh }, -#endif + [CSR_TIMEH] = { ctr32, read_timeh }, #if !defined(CONFIG_USER_ONLY) /* Machine Timers and Counters */ [CSR_MCYCLE] = { any, read_instret }, [CSR_MINSTRET] = { any, read_instret }, -#if defined(TARGET_RISCV32) - [CSR_MCYCLEH] = { any, read_instreth }, - [CSR_MINSTRETH] = { any, read_instreth }, -#endif + [CSR_MCYCLEH] = { any32, read_instreth }, + [CSR_MINSTRETH] = { any32, read_instreth }, /* Machine Information Registers */ [CSR_MVENDORID] = { any, read_zero }, @@ -1410,9 +1422,7 @@ static riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = { [CSR_MTVEC] = { any, read_mtvec, write_mtvec }, [CSR_MCOUNTEREN] = { any, read_mcounteren, write_mcounteren }, -#if defined(TARGET_RISCV32) - [CSR_MSTATUSH] = { any, read_mstatush, write_mstatush }, -#endif + [CSR_MSTATUSH] = { any32, read_mstatush, write_mstatush }, [CSR_MSCOUNTEREN] = { any, read_mscounteren, write_mscounteren }, @@ -1452,9 +1462,7 @@ static riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = { [CSR_HGEIP] = { hmode, read_hgeip, write_hgeip }, [CSR_HGATP] = { hmode, read_hgatp, write_hgatp }, [CSR_HTIMEDELTA] = { hmode, read_htimedelta, write_htimedelta }, -#if defined(TARGET_RISCV32) - [CSR_HTIMEDELTAH] = { hmode, read_htimedeltah, write_htimedeltah}, -#endif + [CSR_HTIMEDELTAH] = { hmode32, read_htimedeltah, write_htimedeltah}, [CSR_VSSTATUS] = { hmode, read_vsstatus, write_vsstatus }, [CSR_VSIP] = { hmode, NULL, NULL, rmw_vsip }, @@ -1477,9 +1485,7 @@ static riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = { [CSR_HPMCOUNTER3 ... CSR_HPMCOUNTER31] = { ctr, read_zero }, [CSR_MHPMCOUNTER3 ... CSR_MHPMCOUNTER31] = { any, read_zero }, [CSR_MHPMEVENT3 ... CSR_MHPMEVENT31] = { any, read_zero }, -#if defined(TARGET_RISCV32) - [CSR_HPMCOUNTER3H ... CSR_HPMCOUNTER31H] = { ctr, read_zero }, - [CSR_MHPMCOUNTER3H ... CSR_MHPMCOUNTER31H] = { any, read_zero }, -#endif + [CSR_HPMCOUNTER3H ... CSR_HPMCOUNTER31H] = { ctr32, read_zero }, + [CSR_MHPMCOUNTER3H ... CSR_MHPMCOUNTER31H] = { any32, read_zero }, #endif /* !CONFIG_USER_ONLY */ }; |