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[174.21.93.59]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-390b1573defsm4264430a91.1.2026.08.09.15.39.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 09 Aug 2026 15:39:36 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-riscv@nongnu.org Subject: [PATCH 41/56] disas/riscv: Reject all of OP-32 and OP-IMM-32 for RV32 Date: Sun, 9 Aug 2026 15:35:30 -0700 Message-ID: <20260809223545.730664-42-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260809223545.730664-1-richard.henderson@linaro.org> References: <20260809223545.730664-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::102c; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x102c.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-riscv@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-riscv-bounces+qemu-riscv=archiver.kernel.org@nongnu.org Sender: qemu-riscv-bounces+qemu-riscv=archiver.kernel.org@nongnu.org These entire base opcodes are RV64. Reject them all at once rather than one at a time. Signed-off-by: Richard Henderson --- disas/riscv.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/disas/riscv.c b/disas/riscv.c index c4b8ee7d07..f51d45674e 100644 --- a/disas/riscv.c +++ b/disas/riscv.c @@ -3311,6 +3311,10 @@ static const rv_opcode_data *decode_inst_opcode(rv_decode *dec, rv_isa isa) } break; case 6: + /* OP-IMM-32 */ + if (isa == rv32) { + break; + } switch ((inst >> 12) & 0b111) { case 0: op = rv_op_addiw; break; case 1: @@ -3557,6 +3561,10 @@ static const rv_opcode_data *decode_inst_opcode(rv_decode *dec, rv_isa isa) break; case 13: op = rv_op_lui; break; case 14: + /* OP-32 */ + if (isa == rv32) { + break; + } switch (((inst >> 22) & 0b1111111000) | ((inst >> 12) & 0b0000000111)) { case 0: op = rv_op_addw; break; -- 2.43.0