From nobody Thu Nov 6 10:36:43 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1540312027322237.4890401837381; Tue, 23 Oct 2018 09:27:07 -0700 (PDT) Received: from localhost ([::1]:43255 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gEzWM-0004HE-6i for importer@patchew.org; Tue, 23 Oct 2018 12:27:06 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57261) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gEzQK-000782-Ko for qemu-devel@nongnu.org; Tue, 23 Oct 2018 12:20:53 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gEzQH-0001la-BL for qemu-devel@nongnu.org; Tue, 23 Oct 2018 12:20:52 -0400 Received: from mx2.rt-rk.com ([89.216.37.149]:46761 helo=mail.rt-rk.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gEzQG-0001kY-Ty for qemu-devel@nongnu.org; Tue, 23 Oct 2018 12:20:49 -0400 Received: from localhost (localhost [127.0.0.1]) by mail.rt-rk.com (Postfix) with ESMTP id B4E431A44FC; Tue, 23 Oct 2018 18:20:47 +0200 (CEST) Received: from rtrkw774-lin.mipstec.com (rtrkw774-lin.domain.local [10.10.13.43]) by mail.rt-rk.com (Postfix) with ESMTPSA id 6FDC21A21B4; Tue, 23 Oct 2018 18:20:47 +0200 (CEST) X-Virus-Scanned: amavisd-new at rt-rk.com From: Aleksandar Markovic To: qemu-devel@nongnu.org Date: Tue, 23 Oct 2018 18:18:25 +0200 Message-Id: <1540311509-23970-15-git-send-email-aleksandar.markovic@rt-rk.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1540311509-23970-1-git-send-email-aleksandar.markovic@rt-rk.com> References: <1540311509-23970-1-git-send-email-aleksandar.markovic@rt-rk.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 89.216.37.149 Subject: [Qemu-devel] [PATCH v6 14/18] target/mips: Add emulation of MXU instruction S8LDD X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jancraig@amazon.com, smarkovic@wavecomp.com, richard.henderson@linaro.org, amarkovic@wavecomp.com, pjovanovic@wavecomp.com, aurelien@aurel32.net Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Craig Janeczek Add support for emulating the S8LDD MXU instruction. Signed-off-by: Craig Janeczek Signed-off-by: Aleksandar Markovic --- target/mips/translate.c | 90 +++++++++++++++++++++++++++++++++++++++++++++= ++-- 1 file changed, 87 insertions(+), 3 deletions(-) diff --git a/target/mips/translate.c b/target/mips/translate.c index 111affb..a9915c4 100644 --- a/target/mips/translate.c +++ b/target/mips/translate.c @@ -23954,6 +23954,92 @@ static void gen_mxu_s32m2i(DisasContext *ctx) tcg_temp_free(t0); } =20 +/* + * S8LDD XRa, Rb, s8, optn3 - Load a byte from memory to XRF + */ +static void gen_mxu_s8ldd(DisasContext *ctx) +{ + TCGv t0, t1; + TCGLabel *l0; + uint32_t XRa, Rb, s8, optn3; + + t0 =3D tcg_temp_new(); + t1 =3D tcg_temp_new(); + + l0 =3D gen_new_label(); + + XRa =3D extract32(ctx->opcode, 6, 4); + s8 =3D extract32(ctx->opcode, 10, 8); + optn3 =3D extract32(ctx->opcode, 18, 3); + Rb =3D extract32(ctx->opcode, 21, 5); + + gen_load_mxu_cr(t0); + tcg_gen_andi_tl(t0, t0, MXU_CR_MXU_EN); + tcg_gen_brcondi_tl(TCG_COND_NE, t0, MXU_CR_MXU_EN, l0); + + gen_load_gpr(t0, Rb); + tcg_gen_addi_tl(t0, t0, (int8_t)s8); + + switch (optn3) { + /* XRa[7:0] =3D tmp8 */ + case MXU_OPTN3_PTN0: + tcg_gen_qemu_ld_tl(t1, t0, ctx->mem_idx, MO_UB); + gen_load_mxu_gpr(t0, XRa); + tcg_gen_deposit_tl(t0, t0, t1, 0, 8); + break; + /* XRa[15:8] =3D tmp8 */ + case MXU_OPTN3_PTN1: + tcg_gen_qemu_ld_tl(t1, t0, ctx->mem_idx, MO_UB); + gen_load_mxu_gpr(t0, XRa); + tcg_gen_deposit_tl(t0, t0, t1, 8, 8); + break; + /* XRa[23:16] =3D tmp8 */ + case MXU_OPTN3_PTN2: + tcg_gen_qemu_ld_tl(t1, t0, ctx->mem_idx, MO_UB); + gen_load_mxu_gpr(t0, XRa); + tcg_gen_deposit_tl(t0, t0, t1, 16, 8); + break; + /* XRa[31:24] =3D tmp8 */ + case MXU_OPTN3_PTN3: + tcg_gen_qemu_ld_tl(t1, t0, ctx->mem_idx, MO_UB); + gen_load_mxu_gpr(t0, XRa); + tcg_gen_deposit_tl(t0, t0, t1, 24, 8); + break; + /* XRa =3D {8'b0, tmp8, 8'b0, tmp8} */ + case MXU_OPTN3_PTN4: + tcg_gen_qemu_ld_tl(t1, t0, ctx->mem_idx, MO_UB); + tcg_gen_deposit_tl(t0, t1, t1, 16, 16); + break; + /* XRa =3D {tmp8, 8'b0, tmp8, 8'b0} */ + case MXU_OPTN3_PTN5: + tcg_gen_qemu_ld_tl(t1, t0, ctx->mem_idx, MO_UB); + tcg_gen_shli_tl(t1, t1, 8); + tcg_gen_deposit_tl(t0, t1, t1, 16, 16); + break; + /* XRa =3D {{8{sign of tmp8}}, tmp8, {8{sign of tmp8}}, tmp8} */ + case MXU_OPTN3_PTN6: + tcg_gen_qemu_ld_tl(t1, t0, ctx->mem_idx, MO_SB); + tcg_gen_mov_tl(t0, t1); + tcg_gen_andi_tl(t0, t0, 0xFF00FFFF); + tcg_gen_shli_tl(t1, t1, 16); + tcg_gen_or_tl(t0, t0, t1); + break; + /* XRa =3D {tmp8, tmp8, tmp8, tmp8} */ + case MXU_OPTN3_PTN7: + tcg_gen_qemu_ld_tl(t1, t0, ctx->mem_idx, MO_UB); + tcg_gen_deposit_tl(t1, t1, t1, 8, 8); + tcg_gen_deposit_tl(t0, t1, t1, 16, 16); + break; + } + + gen_store_mxu_gpr(t0, XRa); + + gen_set_label(l0); + + tcg_temp_free(t0); + tcg_temp_free(t1); +} + =20 /* * Decoding engine for MXU @@ -24994,9 +25080,7 @@ static void decode_opc_mxu(CPUMIPSState *env, Disas= Context *ctx) generate_exception_end(ctx, EXCP_RI); break; case OPC_MXU_S8LDD: - /* TODO: Implement emulation of S8LDD instruction. */ - MIPS_INVAL("OPC_MXU_S8LDD"); - generate_exception_end(ctx, EXCP_RI); + gen_mxu_s8ldd(ctx); break; case OPC_MXU_S8STD: /* TODO: Implement emulation of S8STD instruction. */ --=20 2.7.4