From: Weiwei Li <liweiwei@iscas.ac.cn>
To: palmer@dabbelt.com, alistair.francis@wdc.com,
bin.meng@windriver.com, qemu-riscv@nongnu.org,
qemu-devel@nongnu.org
Cc: wangjunqiang@iscas.ac.cn, lazyparser@gmail.com,
Weiwei Li <liweiwei@iscas.ac.cn>
Subject: [RFC 6/8] target/riscv: delete redundant check for zcd instructions in decode_opc
Date: Fri, 30 Sep 2022 09:23:43 +0800 [thread overview]
Message-ID: <20220930012345.5248-7-liweiwei@iscas.ac.cn> (raw)
In-Reply-To: <20220930012345.5248-1-liweiwei@iscas.ac.cn>
All the check for Zcd instructions have been done in their trans function
Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
---
target/riscv/translate.c | 7 -------
1 file changed, 7 deletions(-)
diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index 347bc913eb..a55b4a7849 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -1087,13 +1087,6 @@ static void decode_opc(CPURISCVState *env, DisasContext *ctx, uint16_t opcode)
((opcode & 0xe003) == 0xe000) ||
((opcode & 0xe003) == 0xe002))) {
gen_exception_illegal(ctx);
- } else if (!(has_ext(ctx, RVC) || ctx->cfg_ptr->ext_zcd ||
- ctx->cfg_ptr->ext_zcmp || ctx->cfg_ptr->ext_zcmt) &&
- (((opcode & 0xe003) == 0x2000) ||
- ((opcode & 0xe003) == 0x2002) ||
- ((opcode & 0xe003) == 0xa000) ||
- ((opcode & 0xe003) == 0xa002))) {
- gen_exception_illegal(ctx);
} else {
ctx->opcode = opcode;
ctx->pc_succ_insn = ctx->base.pc_next + 2;
--
2.25.1
next prev parent reply other threads:[~2022-09-30 1:28 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-30 1:23 [RFC 0/8] support subsets of code size reduction extension Weiwei Li
2022-09-30 1:23 ` [RFC 1/8] target/riscv: add cfg properties for Zc* extension Weiwei Li
2022-10-25 3:14 ` Alistair Francis
2022-09-30 1:23 ` [RFC 2/8] target/riscv: add support for Zca, Zcf and Zcd extension Weiwei Li
2022-09-30 1:23 ` [RFC 3/8] target/riscv: add support for Zcb extension Weiwei Li
2022-09-30 1:23 ` [RFC 4/8] target/riscv: add support for Zcmp extension Weiwei Li
2022-09-30 1:23 ` [RFC 5/8] target/riscv: add support for Zcmt extension Weiwei Li
2022-09-30 1:23 ` Weiwei Li [this message]
2022-10-25 3:39 ` [RFC 6/8] target/riscv: delete redundant check for zcd instructions in decode_opc Alistair Francis
2022-10-25 7:03 ` weiwei
2022-09-30 1:23 ` [RFC 7/8] target/riscv: expose properties for Zc* extension Weiwei Li
2022-10-25 3:39 ` Alistair Francis
2022-09-30 1:23 ` [RFC 8/8] disas/riscv.c: add disasm support for Zc* Weiwei Li
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