From patchwork Wed Sep 22 18:09:21 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: WANG Xuerui X-Patchwork-Id: 12511295 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 59B38C433FE for ; Wed, 22 Sep 2021 18:57:31 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D46EA6109E for ; Wed, 22 Sep 2021 18:57:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org D46EA6109E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=xen0n.name Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:34700 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mT7Qu-0006NM-Rq for qemu-devel@archiver.kernel.org; Wed, 22 Sep 2021 14:57:28 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:43918) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mT6hB-00076Z-Ht for qemu-devel@nongnu.org; Wed, 22 Sep 2021 14:10:14 -0400 Received: from [115.28.160.31] (port=40382 helo=mailbox.box.xen0n.name) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mT6h7-0007Gv-FI for qemu-devel@nongnu.org; Wed, 22 Sep 2021 14:10:13 -0400 Received: from ld50.lan (unknown [101.88.29.172]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by mailbox.box.xen0n.name (Postfix) with ESMTPSA id 1479A6340B; Thu, 23 Sep 2021 02:09:45 +0800 (CST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=xen0n.name; s=mail; t=1632334185; bh=nM60Bu5s4HfzLofap7v5BMSYDSxt6z/Vs5LG4QQQsM8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Ft6cO8gIVdd/rpwZSCx7ucVlXLDmIm5F5DM+w5wkX3E2MZ2pRRc4TqeYeqA2FJYiW YX+okentolOE8Xo9iKiNPL0UR1jvjz0O48IfCqAfUyQ30V+S+KSnloTUCwyEQflsdz XqcQOypsLq0TL8Vp9dMQ1SfQUqmkfcjwC047oaxg= From: WANG Xuerui To: qemu-devel@nongnu.org Subject: [PATCH v3 24/30] tcg/loongarch64: Implement tcg_target_qemu_prologue Date: Thu, 23 Sep 2021 02:09:21 +0800 Message-Id: <20210922180927.666273-25-git@xen0n.name> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210922180927.666273-1-git@xen0n.name> References: <20210922180927.666273-1-git@xen0n.name> MIME-Version: 1.0 X-Host-Lookup-Failed: Reverse DNS lookup failed for 115.28.160.31 (failed) Received-SPF: pass client-ip=115.28.160.31; envelope-from=git@xen0n.name; helo=mailbox.box.xen0n.name X-Spam_score_int: 6 X-Spam_score: 0.6 X-Spam_bar: / X-Spam_report: (0.6 / 5.0 requ) DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RDNS_NONE=0.793, 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: WANG Xuerui , Peter Maydell , Richard Henderson , =?utf-8?q?Philippe_Mathie?= =?utf-8?q?u-Daud=C3=A9?= , Laurent Vivier Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: WANG Xuerui Reviewed-by: Richard Henderson --- tcg/loongarch64/tcg-target.c.inc | 68 ++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) diff --git a/tcg/loongarch64/tcg-target.c.inc b/tcg/loongarch64/tcg-target.c.inc index 4c3feb2258..590f2b7c2f 100644 --- a/tcg/loongarch64/tcg-target.c.inc +++ b/tcg/loongarch64/tcg-target.c.inc @@ -909,6 +909,8 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args) * Entry-points */ +static const tcg_insn_unit *tb_ret_addr; + static void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg args[TCG_MAX_OP_ARGS], const int const_args[TCG_MAX_OP_ARGS]) @@ -1456,3 +1458,69 @@ static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op) g_assert_not_reached(); } } + +static const int tcg_target_callee_save_regs[] = { + TCG_REG_S0, /* used for the global env (TCG_AREG0) */ + TCG_REG_S1, + TCG_REG_S2, + TCG_REG_S3, + TCG_REG_S4, + TCG_REG_S5, + TCG_REG_S6, + TCG_REG_S7, + TCG_REG_S8, + TCG_REG_S9, + TCG_REG_RA, /* should be last for ABI compliance */ +}; + +/* Stack frame parameters. */ +#define REG_SIZE (TCG_TARGET_REG_BITS / 8) +#define SAVE_SIZE ((int)ARRAY_SIZE(tcg_target_callee_save_regs) * REG_SIZE) +#define TEMP_SIZE (CPU_TEMP_BUF_NLONGS * (int)sizeof(long)) +#define FRAME_SIZE ((TCG_STATIC_CALL_ARGS_SIZE + TEMP_SIZE + SAVE_SIZE \ + + TCG_TARGET_STACK_ALIGN - 1) \ + & -TCG_TARGET_STACK_ALIGN) +#define SAVE_OFS (TCG_STATIC_CALL_ARGS_SIZE + TEMP_SIZE) + +/* We're expecting to be able to use an immediate for frame allocation. */ +QEMU_BUILD_BUG_ON(FRAME_SIZE > 0x7ff); + +/* Generate global QEMU prologue and epilogue code */ +static void tcg_target_qemu_prologue(TCGContext *s) +{ + int i; + + tcg_set_frame(s, TCG_REG_SP, TCG_STATIC_CALL_ARGS_SIZE, TEMP_SIZE); + + /* TB prologue */ + tcg_out_opc_addi_d(s, TCG_REG_SP, TCG_REG_SP, -FRAME_SIZE); + for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); i++) { + tcg_out_st(s, TCG_TYPE_REG, tcg_target_callee_save_regs[i], + TCG_REG_SP, SAVE_OFS + i * REG_SIZE); + } + +#if !defined(CONFIG_SOFTMMU) + if (USE_GUEST_BASE) { + tcg_out_movi(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG, guest_base); + tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG); + } +#endif + + /* Call generated code */ + tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]); + tcg_out_opc_jirl(s, TCG_REG_ZERO, tcg_target_call_iarg_regs[1], 0); + + /* Return path for goto_ptr. Set return value to 0 */ + tcg_code_gen_epilogue = tcg_splitwx_to_rx(s->code_ptr); + tcg_out_mov(s, TCG_TYPE_REG, TCG_REG_A0, TCG_REG_ZERO); + + /* TB epilogue */ + tb_ret_addr = tcg_splitwx_to_rx(s->code_ptr); + for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); i++) { + tcg_out_ld(s, TCG_TYPE_REG, tcg_target_callee_save_regs[i], + TCG_REG_SP, SAVE_OFS + i * REG_SIZE); + } + + tcg_out_opc_addi_d(s, TCG_REG_SP, TCG_REG_SP, FRAME_SIZE); + tcg_out_opc_jirl(s, TCG_REG_ZERO, TCG_REG_RA, 0); +}