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target/riscv: add vector extension field in CPURISCVState

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The 32 vector registers will be viewed as a continuous memory block.
It avoids the convension between element index and (regno, offset).
Thus elements can be directly accessed by offset from the first vector
base address.

Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200701152549.1218-2-zhiwei_liu@c-sky.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
LIU Zhiwei 2020-07-01 23:24:49 +08:00 • committed by Alistair Francis
parent 70b78d4e71
commit ad9e5aa2ae
2 changed files with 14 additions and 1 deletions
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3
target/riscv/translate.c
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@ -32,7 +32,7 @@
#include "instmap.h"
/* global register indices */
static TCGv cpu_gpr[32], cpu_pc;
static TCGv cpu_gpr[32], cpu_pc, cpu_vl;
static TCGv_i64 cpu_fpr[32]; /* assume F and D extensions */
static TCGv load_res;
static TCGv load_val;
@ -887,6 +887,7 @@ void riscv_translate_init(void)
}
cpu_pc = tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, pc), "pc");
cpu_vl = tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, vl), "vl");
load_res = tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, load_res),
"load_res");
load_val = tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, load_val),