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[83.57.175.68]) by smtp.gmail.com with ESMTPSA id f7sm10918378wmh.39.2021.02.14.10.00.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 14 Feb 2021 10:00:44 -0800 (PST) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Subject: [RFC PATCH 18/42] target/mips/tx79: Introduce PEXTU[BHW] opcodes (Parallel Extend Lower) Date: Sun, 14 Feb 2021 18:58:48 +0100 Message-Id: <20210214175912.732946-19-f4bug@amsat.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210214175912.732946-1-f4bug@amsat.org> References: <20210214175912.732946-1-f4bug@amsat.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::432; envelope-from=philippe.mathieu.daude@gmail.com; helo=mail-wr1-x432.google.com X-Spam_score_int: -14 X-Spam_score: -1.5 X-Spam_bar: - X-Spam_report: (-1.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.249, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action 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: Fredrik Noring , Aleksandar Rikalo , Richard Henderson , Laurent Vivier , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Thomas Huth , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Aurelien Jarno , "Maciej W. Rozycki" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Introduce the 'Parallel Extend Lower' opcodes: - PEXTLB (Parallel Extend Upper from Byte) - PEXTLH (Parallel Extend Upper from Halfword) - PEXTLW (Parallel Extend Upper from Word) Signed-off-by: Philippe Mathieu-Daudé --- target/mips/tx79.decode | 3 ++ target/mips/tx79_translate.c | 78 ++++++++++++++++++++++++++++++++++++ 2 files changed, 81 insertions(+) diff --git a/target/mips/tx79.decode b/target/mips/tx79.decode index ead5f8281e5..98f21d33e3f 100644 --- a/target/mips/tx79.decode +++ b/target/mips/tx79.decode @@ -34,6 +34,9 @@ MTLO1 011100 ..... 0000000000 00000 010011 @rs PSUBW 011100 ..... ..... ..... 00001 001000 @rs_rt_rd PSUBH 011100 ..... ..... ..... 00101 001000 @rs_rt_rd PSUBB 011100 ..... ..... ..... 01001 001000 @rs_rt_rd +PEXTLW 011100 ..... ..... ..... 10010 001000 @rs_rt_rd +PEXTLH 011100 ..... ..... ..... 10110 001000 @rs_rt_rd +PEXTLB 011100 ..... ..... ..... 11010 001000 @rs_rt_rd # MMI1 diff --git a/target/mips/tx79_translate.c b/target/mips/tx79_translate.c index 0a2fb28600b..11968d6edab 100644 --- a/target/mips/tx79_translate.c +++ b/target/mips/tx79_translate.c @@ -332,6 +332,84 @@ static bool trans_PNOR(DisasContext *ctx, arg_rtype *a) * PEXTLW rd, rs, rt Parallel Extend Lower from Word */ +static bool trans_PEXTLx(DisasContext *ctx, arg_rtype *a, unsigned wlen) +{ + TCGv_i64 ax, bx; + + if (a->rd == 0) { + /* nop */ + return true; + } + + ax = tcg_temp_new_i64(); + bx = tcg_temp_new_i64(); + + gen_load_gpr(ax, a->rs); + gen_load_gpr(bx, a->rt); + + /* Lower halve */ + for (int i = 0; i < 64 / (2 * wlen); i++) { + tcg_gen_deposit_i64(cpu_gpr[a->rd], + cpu_gpr[a->rd], bx, 2 * wlen * i, wlen); + tcg_gen_deposit_i64(cpu_gpr[a->rd], + cpu_gpr[a->rd], ax, 2 * wlen * i + wlen, wlen); + tcg_gen_shri_i64(bx, bx, wlen); + tcg_gen_shri_i64(ax, ax, wlen); + } + /* Upper halve */ + for (int i = 0; i < 64 / (2 * wlen); i++) { + tcg_gen_deposit_i64(cpu_gpr_hi[a->rd], + cpu_gpr_hi[a->rd], bx, 2 * wlen * i, wlen); + tcg_gen_deposit_i64(cpu_gpr_hi[a->rd], + cpu_gpr_hi[a->rd], ax, 2 * wlen * i + wlen, wlen); + tcg_gen_shri_i64(bx, bx, wlen); + tcg_gen_shri_i64(ax, ax, wlen); + } + + tcg_temp_free(bx); + tcg_temp_free(ax); + + return true; +} + +/* Parallel Extend Lower from Byte */ +static bool trans_PEXTLB(DisasContext *ctx, arg_rtype *a) +{ + return trans_PEXTLx(ctx, a, 8); +} + +/* Parallel Extend Lower from Halfword */ +static bool trans_PEXTLH(DisasContext *ctx, arg_rtype *a) +{ + return trans_PEXTLx(ctx, a, 16); +} + +/* Parallel Extend Lower from Word */ +static bool trans_PEXTLW(DisasContext *ctx, arg_rtype *a) +{ + TCGv_i64 ax, bx; + + if (a->rd == 0) { + /* nop */ + return true; + } + + ax = tcg_temp_new_i64(); + bx = tcg_temp_new_i64(); + + gen_load_gpr(ax, a->rs); + gen_load_gpr(bx, a->rt); + + tcg_gen_deposit_i64(cpu_gpr[a->rd], bx, ax, 32, 32); + tcg_gen_shri_i64(bx, bx, 32); + tcg_gen_deposit_i64(cpu_gpr_hi[a->rd], ax, bx, 0, 32); + + tcg_temp_free(bx); + tcg_temp_free(ax); + + return true; +} + /* Parallel Extend Upper from Word */ static bool trans_PEXTUW(DisasContext *ctx, arg_rtype *a) { -- 2.26.2