[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PULL 04/65] target/riscv: Not allow write mstatus_vs without RVV
|
From: |
Alistair Francis |
|
Subject: |
[PULL 04/65] target/riscv: Not allow write mstatus_vs without RVV |
|
Date: |
Wed, 10 Jan 2024 18:56:32 +1000 |
From: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
If CPU does not implement the Vector extension, it usually means
mstatus vs hardwire to zero. So we should not allow write a
non-zero value to this field.
Signed-off-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20231215023313.1708-1-zhiwei_liu@linux.alibaba.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
target/riscv/csr.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/target/riscv/csr.c b/target/riscv/csr.c
index c50a33397c..d8f751a0ae 100644
--- a/target/riscv/csr.c
+++ b/target/riscv/csr.c
@@ -1328,11 +1328,14 @@ static RISCVException write_mstatus(CPURISCVState *env,
int csrno,
mask = MSTATUS_SIE | MSTATUS_SPIE | MSTATUS_MIE | MSTATUS_MPIE |
MSTATUS_SPP | MSTATUS_MPRV | MSTATUS_SUM |
MSTATUS_MPP | MSTATUS_MXR | MSTATUS_TVM | MSTATUS_TSR |
- MSTATUS_TW | MSTATUS_VS;
+ MSTATUS_TW;
if (riscv_has_ext(env, RVF)) {
mask |= MSTATUS_FS;
}
+ if (riscv_has_ext(env, RVV)) {
+ mask |= MSTATUS_VS;
+ }
if (xl != MXL_RV32 || env->debugger) {
if (riscv_has_ext(env, RVH)) {
--
2.43.0
- [PULL 00/65] riscv-to-apply queue, Alistair Francis, 2024/01/10
- [PULL 01/65] target/riscv: Add vill check for whole vector register move instructions, Alistair Francis, 2024/01/10
- [PULL 03/65] target/riscv: Fix th.dcache.cval1 priviledge check, Alistair Francis, 2024/01/10
- [PULL 02/65] target/riscv: The whole vector register move instructions depend on vsew, Alistair Francis, 2024/01/10
- [PULL 04/65] target/riscv: Not allow write mstatus_vs without RVV,
Alistair Francis <=
- [PULL 05/65] target/riscv/pmp: Use hwaddr instead of target_ulong for RV32, Alistair Francis, 2024/01/10
- [PULL 06/65] target/riscv/cpu.c: fix machine IDs getters, Alistair Francis, 2024/01/10
- [PULL 07/65] target/riscv/kvm: change KVM_REG_RISCV_FP_F to u32, Alistair Francis, 2024/01/10
- [PULL 08/65] target/riscv/kvm: change KVM_REG_RISCV_FP_D to u64, Alistair Francis, 2024/01/10
- [PULL 09/65] target/riscv/kvm: change timer regs size to u64, Alistair Francis, 2024/01/10
- [PULL 11/65] target/riscv/kvm: rename riscv_reg_id() to riscv_reg_id_ulong(), Alistair Francis, 2024/01/10
- [PULL 12/65] hw/arm/virt-acpi-build.c: Migrate fw_cfg creation to common location, Alistair Francis, 2024/01/10
- [PULL 13/65] hw/arm/virt-acpi-build.c: Migrate virtio creation to common location, Alistair Francis, 2024/01/10
- [PULL 10/65] target/riscv/kvm: add RISCV_CONFIG_REG(), Alistair Francis, 2024/01/10
- [PULL 14/65] hw/i386/acpi-microvm.c: Use common function to add virtio in DSDT, Alistair Francis, 2024/01/10