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([172.58.111.133]) by smtp.gmail.com with ESMTPSA id 00721157ae682-71b5a6031a1sm18753227b3.86.2025.08.02.18.40.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 02 Aug 2025 18:40:48 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org Subject: [PATCH 05/11] target/arm: Implement CTZ, CNT, ABS Date: Sun, 3 Aug 2025 11:40:13 +1000 Message-ID: <20250803014019.416797-6-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250803014019.416797-1-richard.henderson@linaro.org> References: <20250803014019.416797-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::b2b; envelope-from=richard.henderson@linaro.org; helo=mail-yb1-xb2b.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-devel@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-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Signed-off-by: Richard Henderson --- target/arm/tcg/translate-a64.c | 31 +++++++++++++++++++++++++++++++ target/arm/tcg/a64.decode | 4 ++++ 2 files changed, 35 insertions(+) diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c index 64a845d5fb..0c78d4bb79 100644 --- a/target/arm/tcg/translate-a64.c +++ b/target/arm/tcg/translate-a64.c @@ -8304,6 +8304,37 @@ static void gen_cls32(TCGv_i64 tcg_rd, TCGv_i64 tcg_rn) TRANS(CLZ, gen_rr, a->rd, a->rn, a->sf ? gen_clz64 : gen_clz32) TRANS(CLS, gen_rr, a->rd, a->rn, a->sf ? tcg_gen_clrsb_i64 : gen_cls32) +static void gen_ctz32(TCGv_i64 tcg_rd, TCGv_i64 tcg_rn) +{ + TCGv_i32 t32 = tcg_temp_new_i32(); + + tcg_gen_extrl_i64_i32(t32, tcg_rn); + tcg_gen_ctzi_i32(t32, t32, 32); + tcg_gen_extu_i32_i64(tcg_rd, t32); +} + +static void gen_ctz64(TCGv_i64 tcg_rd, TCGv_i64 tcg_rn) +{ + tcg_gen_ctzi_i64(tcg_rd, tcg_rn, 64); +} + +static void gen_cnt32(TCGv_i64 tcg_rd, TCGv_i64 tcg_rn) +{ + gen_wrap2_i32(tcg_rn, tcg_rn, tcg_gen_ctpop_i32); +} + +static void gen_abs32(TCGv_i64 tcg_rd, TCGv_i64 tcg_rn) +{ + gen_wrap2_i32(tcg_rn, tcg_rn, tcg_gen_abs_i32); +} + +TRANS_FEAT(CTZ, aa64_cssc, gen_rr, a->rd, a->rn, + a->sf ? gen_ctz64 : gen_ctz32) +TRANS_FEAT(CNT, aa64_cssc, gen_rr, a->rd, a->rn, + a->sf ? tcg_gen_ctpop_i64 : gen_cnt32) +TRANS_FEAT(ABS, aa64_cssc, gen_rr, a->rd, a->rn, + a->sf ? tcg_gen_abs_i64 : gen_abs32) + static bool gen_pacaut(DisasContext *s, arg_pacaut *a, NeonGenTwo64OpEnvFn fn) { TCGv_i64 tcg_rd, tcg_rn; diff --git a/target/arm/tcg/a64.decode b/target/arm/tcg/a64.decode index a886b3ba4c..766c610c01 100644 --- a/target/arm/tcg/a64.decode +++ b/target/arm/tcg/a64.decode @@ -726,6 +726,10 @@ REV64 1 10 11010110 00000 000011 ..... ..... @rr CLZ . 10 11010110 00000 000100 ..... ..... @rr_sf CLS . 10 11010110 00000 000101 ..... ..... @rr_sf +CTZ . 10 11010110 00000 000110 ..... ..... @rr_sf +CNT . 10 11010110 00000 000111 ..... ..... @rr_sf +ABS . 10 11010110 00000 001000 ..... ..... @rr_sf + &pacaut rd rn z @pacaut . .. ........ ..... .. z:1 ... rn:5 rd:5 &pacaut -- 2.43.0