From nobody Thu Nov 6 10:31:26 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 1540813591565882.5860430570817; Mon, 29 Oct 2018 04:46:31 -0700 (PDT) Received: from localhost ([::1]:44884 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gH606-0000oO-FH for importer@patchew.org; Mon, 29 Oct 2018 07:46:30 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49324) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gH5iJ-00026f-9l for qemu-devel@nongnu.org; Mon, 29 Oct 2018 07:28:09 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gH5iG-0005WC-1K for qemu-devel@nongnu.org; Mon, 29 Oct 2018 07:28:07 -0400 Received: from mx2.rt-rk.com ([89.216.37.149]:35373 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 1gH5iF-0005KX-Q4 for qemu-devel@nongnu.org; Mon, 29 Oct 2018 07:28:03 -0400 Received: from localhost (localhost [127.0.0.1]) by mail.rt-rk.com (Postfix) with ESMTP id B731E1A223B; Mon, 29 Oct 2018 12:27:45 +0100 (CET) Received: from rtrkw774-lin.domain.local (rtrkw774-lin.domain.local [10.10.13.43]) by mail.rt-rk.com (Postfix) with ESMTPSA id 9013E1A2264; Mon, 29 Oct 2018 12:27:45 +0100 (CET) X-Virus-Scanned: amavisd-new at rt-rk.com From: Aleksandar Markovic To: qemu-devel@nongnu.org Date: Mon, 29 Oct 2018 12:25:26 +0100 Message-Id: <1540812328-16163-19-git-send-email-aleksandar.markovic@rt-rk.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1540812328-16163-1-git-send-email-aleksandar.markovic@rt-rk.com> References: <1540812328-16163-1-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 v8 18/20] target/mips: Add emulation of MXU instructions S32LDD and S32LDDR 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" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Craig Janeczek Add support for emulating the S32LDD and S32LDDR MXU instructions. Reviewed-by: Aleksandar Markovic Signed-off-by: Craig Janeczek Signed-off-by: Aleksandar Markovic --- target/mips/translate.c | 54 ++++++++++++++++++++++++++++++++++++++++++---= ---- 1 file changed, 47 insertions(+), 7 deletions(-) diff --git a/target/mips/translate.c b/target/mips/translate.c index 14e19d8..30c5721 100644 --- a/target/mips/translate.c +++ b/target/mips/translate.c @@ -24414,6 +24414,52 @@ static void gen_mxu_q8mul_q8mulsu(DisasContext *ct= x) tcg_temp_free(t7); } =20 +/* + * S32LDD XRa, Rb, S12 - Load a word from memory to XRF + * S32LDDR XRa, Rb, S12 - Load a word from memory to XRF, reversed byte se= q. + */ +static void gen_mxu_s32ldd_s32lddr(DisasContext *ctx) +{ + TCGv t0, t1; + TCGLabel *l0; + uint32_t XRa, Rb, s12, sel; + + t0 =3D tcg_temp_new(); + t1 =3D tcg_temp_new(); + + l0 =3D gen_new_label(); + + XRa =3D extract32(ctx->opcode, 6, 4); + s12 =3D extract32(ctx->opcode, 10, 10); + sel =3D extract32(ctx->opcode, 20, 1); + 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_movi_tl(t1, s12); + tcg_gen_shli_tl(t1, t1, 2); + if (s12 & 0x200) { + tcg_gen_ori_tl(t1, t1, 0xFFFFF000); + } + tcg_gen_add_tl(t1, t0, t1); + tcg_gen_qemu_ld_tl(t1, t1, ctx->mem_idx, MO_SL); + + if (sel =3D=3D 1) { + /* S32LDDR */ + tcg_gen_bswap32_tl(t1, t1); + } + gen_store_mxu_gpr(t1, XRa); + + gen_set_label(l0); + + tcg_temp_free(t0); + tcg_temp_free(t1); +} + =20 /* * Decoding engine for MXU @@ -24643,14 +24689,8 @@ static void decode_opc_mxu__pool04(CPUMIPSState *e= nv, DisasContext *ctx) =20 switch (opcode) { case OPC_MXU_S32LDD: - /* TODO: Implement emulation of S32LDD instruction. */ - MIPS_INVAL("OPC_MXU_S32LDD"); - generate_exception_end(ctx, EXCP_RI); - break; case OPC_MXU_S32LDDR: - /* TODO: Implement emulation of S32LDDR instruction. */ - MIPS_INVAL("OPC_MXU_S32LDDR"); - generate_exception_end(ctx, EXCP_RI); + gen_mxu_s32ldd_s32lddr(ctx); break; default: MIPS_INVAL("decode_opc_mxu"); --=20 2.7.4