12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758 |
- From c20e6b080e9f932469ed72862e4a45cd314975e2 Mon Sep 17 00:00:00 2001
- From: Frank Chang <frank.chang@sifive.com>
- Date: Mon, 28 Sep 2020 15:57:56 +0800
- Subject: [PATCH 072/107] target/riscv: rvv-1.0: relax RV_VLEN_MAX to 1024-bits
- Signed-off-by: Frank Chang <frank.chang@sifive.com>
- --
- ---
- target/riscv/cpu.h | 2 +-
- target/riscv/insn_trans/trans_rvv.c.inc | 4 ++--
- target/riscv/vector_helper.c | 2 +-
- 3 files changed, 4 insertions(+), 4 deletions(-)
- diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
- index f773bae96b..d613520211 100644
- --- a/target/riscv/cpu.h
- +++ b/target/riscv/cpu.h
- @@ -103,7 +103,7 @@ typedef struct CPURISCVState CPURISCVState;
-
- #include "pmp.h"
-
- -#define RV_VLEN_MAX 256
- +#define RV_VLEN_MAX 1024
-
- FIELD(VTYPE, VLMUL, 0, 3)
- FIELD(VTYPE, VSEW, 3, 3)
- diff --git a/target/riscv/insn_trans/trans_rvv.c.inc b/target/riscv/insn_trans/trans_rvv.c.inc
- index ea79cfe7b8..d205a05e83 100644
- --- a/target/riscv/insn_trans/trans_rvv.c.inc
- +++ b/target/riscv/insn_trans/trans_rvv.c.inc
- @@ -613,8 +613,8 @@ static bool ldst_us_trans(uint32_t vd, uint32_t rs1, uint32_t data,
- base = tcg_temp_new();
-
- /*
- - * As simd_desc supports at most 256 bytes, and in this implementation,
- - * the max vector group length is 2048 bytes. So split it into two parts.
- + * As simd_desc supports at most 2048 bytes, and in this implementation,
- + * the max vector group length is 4096 bytes. So split it into two parts.
- *
- * The first part is vlen in bytes, encoded in maxsz of simd_desc.
- * The second part is lmul, encoded in data of simd_desc.
- diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c
- index 91dccdb04d..6f4f30c5f9 100644
- --- a/target/riscv/vector_helper.c
- +++ b/target/riscv/vector_helper.c
- @@ -129,7 +129,7 @@ static uint32_t vext_wd(uint32_t desc)
- static inline uint32_t vext_max_elems(uint32_t desc, uint32_t esz)
- {
- /*
- - * As simd_desc support at most 256 bytes, the max vlen is 256 bits.
- + * As simd_desc support at most 2048 bytes, the max vlen is 1024 bits.
- * so vlen in bytes (vlenb) is encoded as maxsz.
- */
- uint32_t vlenb = simd_maxsz(desc);
- --
- 2.33.1
|