From nobody Wed Nov 5 10:12:08 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 1534184601063886.4918941948439; Mon, 13 Aug 2018 11:23:21 -0700 (PDT) Received: from localhost ([::1]:40798 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fpHUt-0001A4-TF for importer@patchew.org; Mon, 13 Aug 2018 14:23:19 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59481) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fpH39-0005Pb-6Y for qemu-devel@nongnu.org; Mon, 13 Aug 2018 13:54:51 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fpH34-000756-FA for qemu-devel@nongnu.org; Mon, 13 Aug 2018 13:54:39 -0400 Received: from mx2.rt-rk.com ([89.216.37.149]:55759 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 1fpH34-000730-3R for qemu-devel@nongnu.org; Mon, 13 Aug 2018 13:54:34 -0400 Received: from localhost (localhost [127.0.0.1]) by mail.rt-rk.com (Postfix) with ESMTP id 356FD1A22A1; Mon, 13 Aug 2018 19:54:10 +0200 (CEST) Received: from rtrkw774-lin.domain.local (rtrkw774-lin.domain.local [10.10.13.43]) by mail.rt-rk.com (Postfix) with ESMTPSA id 0CCAF1A229C; Mon, 13 Aug 2018 19:54:10 +0200 (CEST) X-Virus-Scanned: amavisd-new at rt-rk.com From: Aleksandar Markovic To: qemu-devel@nongnu.org Date: Mon, 13 Aug 2018 19:52:51 +0200 Message-Id: <1534182832-554-27-git-send-email-aleksandar.markovic@rt-rk.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1534182832-554-1-git-send-email-aleksandar.markovic@rt-rk.com> References: <1534182832-554-1-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 26/87] target/mips: Add emulation of nanoMIPS 16-bit branch instructions 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: peter.maydell@linaro.org, pburton@wavecomp.com, smarkovic@wavecomp.com, riku.voipio@iki.fi, richard.henderson@linaro.org, laurent@vivier.eu, philippe.mathieu.daude@gmail.com, 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: Yongbok Kim Add emulation of nanoMIPS 16-bit branch instructions. Reviewed-by: Richard Henderson Signed-off-by: Yongbok Kim Signed-off-by: Aleksandar Markovic Signed-off-by: Stefan Markovic --- target/mips/translate.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/target/mips/translate.c b/target/mips/translate.c index 85ecf23..0b9936f 100644 --- a/target/mips/translate.c +++ b/target/mips/translate.c @@ -16799,14 +16799,50 @@ static int decode_nanomips_opc(CPUMIPSState *env,= DisasContext *ctx) case NM_SWGP16: break; case NM_BC16: + gen_compute_branch(ctx, OPC_BEQ, 2, 0, 0, + (sextract32(ctx->opcode, 0, 1) << 10) | + (extract32(ctx->opcode, 1, 9) << 1), 0); break; case NM_BALC16: + gen_compute_branch(ctx, OPC_BGEZAL, 2, 0, 0, + (sextract32(ctx->opcode, 0, 1) << 10) | + (extract32(ctx->opcode, 1, 9) << 1), 0); break; case NM_BEQZC16: + gen_compute_branch(ctx, OPC_BEQ, 2, rt, 0, + (sextract32(ctx->opcode, 0, 1) << 7) | + (extract32(ctx->opcode, 1, 6) << 1), 0); break; case NM_BNEZC16: + gen_compute_branch(ctx, OPC_BNE, 2, rt, 0, + (sextract32(ctx->opcode, 0, 1) << 7) | + (extract32(ctx->opcode, 1, 6) << 1), 0); break; case NM_P16_BR: + switch (ctx->opcode & 0xf) { + case 0: + /* P16.JRC */ + switch (extract32(ctx->opcode, 4, 1)) { + case NM_JRC: + gen_compute_branch(ctx, OPC_JR, 2, + extract32(ctx->opcode, 5, 5), 0, 0, 0); + break; + case NM_JALRC16: + gen_compute_branch(ctx, OPC_JALR, 2, + extract32(ctx->opcode, 5, 5), 31, 0, 0); + break; + } + break; + default: + { + /* P16.BRI */ + uint32_t opc =3D extract32(ctx->opcode, 4, 3) < + extract32(ctx->opcode, 7, 3) ? OPC_BEQ : OP= C_BNE; + gen_compute_branch(ctx, opc, 2, rs, rt, + extract32(ctx->opcode, 0, 4) << 1, 0); + } + break; + } break; case NM_P16_SR: break; --=20 2.7.4