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[97.113.7.119]) by smtp.gmail.com with ESMTPSA id f6sm18999174pga.50.2019.09.04.12.31.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Sep 2019 12:31:50 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Date: Wed, 4 Sep 2019 12:30:29 -0700 Message-Id: <20190904193059.26202-40-richard.henderson@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190904193059.26202-1-richard.henderson@linaro.org> References: <20190904193059.26202-1-richard.henderson@linaro.org> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::544 Subject: [Qemu-devel] [PATCH v4 39/69] target/arm: Convert Unallocated memory hint X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, qemu-arm@nongnu.org Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: "Qemu-devel" Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Richard Henderson --- target/arm/translate.c | 8 -------- target/arm/a32-uncond.decode | 8 ++++++++ 2 files changed, 8 insertions(+), 8 deletions(-) -- 2.17.1 diff --git a/target/arm/translate.c b/target/arm/translate.c index 3f02532d12..7023ee78f1 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -10332,14 +10332,6 @@ static void disas_arm_insn(DisasContext *s, unsigned int insn) } return; } - if (((insn & 0x0f700000) == 0x04100000) || - ((insn & 0x0f700010) == 0x06100000)) { - if (!arm_dc_feature(s, ARM_FEATURE_V7MP)) { - goto illegal_op; - } - return; /* v7MP: Unallocated memory hint: must NOP */ - } - if ((insn & 0x0e000f00) == 0x0c000100) { if (arm_dc_feature(s, ARM_FEATURE_IWMMXT)) { /* iWMMXt register transfer. */ diff --git a/target/arm/a32-uncond.decode b/target/arm/a32-uncond.decode index ddc5edfa5e..60ccfc598d 100644 --- a/target/arm/a32-uncond.decode +++ b/target/arm/a32-uncond.decode @@ -64,3 +64,11 @@ PLI 1111 0100 -101 ---- 1111 ---- ---- ---- # (imm, lit) 7 PLD 1111 0111 -101 ---- 1111 ----- -- 0 ---- # (register) 5te PLDW 1111 0111 -001 ---- 1111 ----- -- 0 ---- # (register) 7mp PLI 1111 0110 -101 ---- 1111 ----- -- 0 ---- # (register) 7 + +# Unallocated memory hints +# +# Since these are v7MP nops, and PLDW is v7MP and implemented as nop, +# (ab)use the PLDW helper. + +PLDW 1111 0100 -001 ---- ---- ---- ---- ---- +PLDW 1111 0110 -001 ---- ---- ---- ---0 ----