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Iglesias" , Paolo Bonzini , Richard Henderson , =?utf-8?q?Philippe_Mathie?= =?utf-8?q?u-Daud=C3=A9?= Subject: [PATCH 5/7] tcg/tcg-op: Document wswap() byte pattern Date: Tue, 22 Aug 2023 11:37:10 +0200 Message-ID: <20230822093712.38922-6-philmd@linaro.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230822093712.38922-1-philmd@linaro.org> References: <20230822093712.38922-1-philmd@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::42e; envelope-from=philmd@linaro.org; helo=mail-wr1-x42e.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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Document wswap_i64(), added in commit 46be8425ff ("tcg: Implement tcg_gen_{h,w}swap_{i32,i64}"). Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson --- docs/devel/tcg-ops.rst | 4 ++++ tcg/tcg-op.c | 5 +++++ 2 files changed, 9 insertions(+) diff --git a/docs/devel/tcg-ops.rst b/docs/devel/tcg-ops.rst index d9364effd2..306025ece7 100644 --- a/docs/devel/tcg-ops.rst +++ b/docs/devel/tcg-ops.rst @@ -490,6 +490,10 @@ Misc - | Swap 16-bit halfwords within a 32/64-bit value. + * - wswap_i64 *t0*, *t1* + + - | Swap 32-bit words within a 64-bit value. + Conditional moves ----------------- diff --git a/tcg/tcg-op.c b/tcg/tcg-op.c index bb64326a1a..c436c5e263 100644 --- a/tcg/tcg-op.c +++ b/tcg/tcg-op.c @@ -1908,6 +1908,11 @@ void tcg_gen_hswap_i64(TCGv_i64 ret, TCGv_i64 arg) tcg_temp_free_i64(t1); } +/* + * wswap_i64: Swap 32-bit words within a 64-bit value. + * + * Byte pattern: wswap_i64(abcdefgh) -> efghabcd + */ void tcg_gen_wswap_i64(TCGv_i64 ret, TCGv_i64 arg) { /* Swapping 2 32-bit elements is a rotate. */