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[PULL 16/31] target/riscv: fix start byte for vmv<nf>r.v when vstart !=
From: |
Alistair Francis |
Subject: |
[PULL 16/31] target/riscv: fix start byte for vmv<nf>r.v when vstart != 0 |
Date: |
Thu, 21 Apr 2022 16:36:15 +1000 |
From: Weiwei Li <liweiwei@iscas.ac.cn>
The spec for vmv<nf>r.v says: 'the instructions operate as if EEW=SEW,
EMUL = NREG, effective length evl= EMUL * VLEN/SEW.'
So the start byte for vstart != 0 should take sew into account
Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20220330021316.18223-1-liweiwei@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
target/riscv/vector_helper.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c
index 99f3134aa0..576b14e5a3 100644
--- a/target/riscv/vector_helper.c
+++ b/target/riscv/vector_helper.c
@@ -4890,13 +4890,15 @@ GEN_VEXT_VCOMPRESS_VM(vcompress_vm_d, uint64_t, H8)
/* Vector Whole Register Move */
void HELPER(vmvr_v)(void *vd, void *vs2, CPURISCVState *env, uint32_t desc)
{
- /* EEW = 8 */
+ /* EEW = SEW */
uint32_t maxsz = simd_maxsz(desc);
- uint32_t i = env->vstart;
+ uint32_t sewb = 1 << FIELD_EX64(env->vtype, VTYPE, VSEW);
+ uint32_t startb = env->vstart * sewb;
+ uint32_t i = startb;
memcpy((uint8_t *)vd + H1(i),
(uint8_t *)vs2 + H1(i),
- maxsz - env->vstart);
+ maxsz - startb);
env->vstart = 0;
}
--
2.35.1
- [PULL 06/31] target/riscv: Add support for mconfigptr, (continued)
- [PULL 06/31] target/riscv: Add support for mconfigptr, Alistair Francis, 2022/04/21
- [PULL 07/31] target/riscv: Add *envcfg* CSRs support, Alistair Francis, 2022/04/21
- [PULL 08/31] target/riscv: Enable privileged spec version 1.12, Alistair Francis, 2022/04/21
- [PULL 09/31] target/riscv: cpu: Fixup indentation, Alistair Francis, 2022/04/21
- [PULL 10/31] target/riscv: Allow software access to MIP SEIP, Alistair Francis, 2022/04/21
- [PULL 12/31] target/riscv: optimize condition assign for scale < 0, Alistair Francis, 2022/04/21
- [PULL 14/31] target/riscv: misa to ISA string conversion fix, Alistair Francis, 2022/04/21
- [PULL 11/31] target/riscv: Add initial support for the Sdtrig extension, Alistair Francis, 2022/04/21
- [PULL 13/31] target/riscv: optimize helper for vmv<nr>r.v, Alistair Francis, 2022/04/21
- [PULL 15/31] target/riscv: Add isa extenstion strings to the device tree, Alistair Francis, 2022/04/21
- [PULL 16/31] target/riscv: fix start byte for vmv<nf>r.v when vstart != 0,
Alistair Francis <=
- [PULL 17/31] target/riscv: Use cpu_loop_exit_restore directly from mmu faults, Alistair Francis, 2022/04/21
- [PULL 18/31] hw/riscv: virt: Exit if the user provided -bios in combination with KVM, Alistair Francis, 2022/04/21
- [PULL 19/31] target/riscv/pmp: fix NAPOT range computation overflow, Alistair Francis, 2022/04/21
- [PULL 21/31] hw/intc: Add .impl.[min|max]_access_size declaration in RISC-V ACLINT, Alistair Francis, 2022/04/21
- [PULL 20/31] hw/riscv: virt: fix DT property mmu-type when CPU mmu option is disabled, Alistair Francis, 2022/04/21
- [PULL 23/31] hw/intc: Make RISC-V ACLINT mtime MMIO register writable, Alistair Francis, 2022/04/21
- [PULL 24/31] hw/intc: riscv_aclint: Add reset function of ACLINT devices, Alistair Francis, 2022/04/21
- [PULL 22/31] hw/intc: Support 32/64-bit mtimecmp and mtime accesses in RISC-V ACLINT, Alistair Francis, 2022/04/21
- [PULL 25/31] target/riscv: debug: Implement debug related TCGCPUOps, Alistair Francis, 2022/04/21
- [PULL 26/31] target/riscv: cpu: Add a config option for native debug, Alistair Francis, 2022/04/21