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target/riscv: Introduce cur_insn_len into DisasContext 

Use cur_insn_len to store the length of the current instruction to
prepare for PC-relative translation.

Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230526072124.298466-3-liweiwei@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Weiwei Li 2023-05-26 15:21:19 +08:00 committed by Alistair Francis
parent bfc4f9e351
commit 8ef23a329a
1 changed files with 3 additions and 1 deletions
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4
target/riscv/translate.c
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@ -61,6 +61,7 @@ typedef struct DisasContext {
DisasContextBase base;
/* pc_succ_insn points to the instruction following base.pc_next */
target_ulong pc_succ_insn;
target_ulong cur_insn_len;
target_ulong priv_ver;
RISCVMXL misa_mxl_max;
RISCVMXL xl;
@ -1116,8 +1117,9 @@ static void decode_opc(CPURISCVState *env, DisasContext *ctx, uint16_t opcode)
};
ctx->virt_inst_excp = false;
ctx->cur_insn_len = insn_len(opcode);
/* Check for compressed insn */
if (insn_len(opcode) == 2) {
if (ctx->cur_insn_len == 2) {
ctx->opcode = opcode;
ctx->pc_succ_insn = ctx->base.pc_next + 2;
/*