From nobody Wed Feb 11 07:50:45 2026 Delivered-To: importer2@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer2=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1622560703; cv=none; d=zohomail.com; s=zohoarc; b=Uc1UeaS4UqssSv69+/LoRdk/vZRdpC0e5aEJ2VSsVi7onE8q96eghHoq6ynQ+WlCgCHKtRip7yaFpNMn3CUaYNlIeOYXBElBWKGwA6d4fdmvTWR21mII0dllbFm6mYCHgMVADqHasJlFgCc5Wo64F+Dx5AgOy6gUmY1lU4N9mhE= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1622560703; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=WSSDMTydfuej13UPqluPpSxteLlzKPiWuqPLoNWXLfQ=; b=PTWBsLNazCcEprgil8xipuSGg4gU3XbQU5vbhCZdZwCdpCgT3hbiKYui4tVWGJSaS8hG5vALGHtZJNbTStwqRYzYA1Z2722ElofCOQiMzHzLJhEljp1XEqHc9XViKZFo7n6Y4GZcfStFOavAeGfQmeLho3QKuu7vSuYsP1XQRVg= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer2=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1622560703342898.935983343262; Tue, 1 Jun 2021 08:18:23 -0700 (PDT) Received: from localhost ([::1]:56494 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lo69u-0002Nf-89 for importer2@patchew.org; Tue, 01 Jun 2021 11:18:22 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:36726) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lo5tv-0002Zi-IH for qemu-devel@nongnu.org; Tue, 01 Jun 2021 11:01:51 -0400 Received: from mail-il1-x130.google.com ([2607:f8b0:4864:20::130]:40507) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lo5th-0002dY-25 for qemu-devel@nongnu.org; Tue, 01 Jun 2021 11:01:50 -0400 Received: by mail-il1-x130.google.com with SMTP id w2so13200482ilo.7 for ; Tue, 01 Jun 2021 08:01:31 -0700 (PDT) Received: from localhost.localdomain ([2607:fb90:806c:3e8a:9cf0:b3be:5e07:b99f]) by smtp.gmail.com with ESMTPSA id f8sm4109909ilj.37.2021.06.01.08.01.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Jun 2021 08:01:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=WSSDMTydfuej13UPqluPpSxteLlzKPiWuqPLoNWXLfQ=; b=o3KhEB24EjzKBmwhFeZO0Dgsg8FpNDojl0qKHzHH1Df4AXXdU00Ge1Wbqq9fWtbi6U WO3SaYc8kAnIxMxWSwGkczNNL5PKU3+7qg+RNFZPENHhJubI5eYu3Nlconk772NsOd1Y LG0sXXB1GdUwyCUnbtv3luIvIQSAphdhw9VilYrw0YKSYPjkjpqzOZhh6LZnUHFDrH0Q gDSMEO5NL9YZaHghQ7HgAEHIPf+t4xYWh1xJzBPIfRYLFInszl9yyhniS38nOnzoRA8f m8qx6B2hvg/yPGnXmvtCXi7eRBMVo5tkh3JcJc/t4vxpAaFX2QPm4a1Xd3ZGM4RBQBJ5 ArwA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=WSSDMTydfuej13UPqluPpSxteLlzKPiWuqPLoNWXLfQ=; b=O6ZdVn8ILbNKfARUQfdLDXxZiAYIgM3qZW+8TRCQdHeaqaxHlQW9vHSNcQEg49QbzF DltV1aRaBlEMplnd53BkSch1PjVwfpsBel9bM6LCQFSxitrlJ1xiGiDB2HKv2iwDYegh jvctr52+y52CaCIduzQSgGIpx6OeaLebL3aGN97VJzLPOpRLDrfEUZ0qP3YEY2omjuou GTGA3EXMsnSikioONCTqqrkdkvd2+thmLji/CiB2TMhUDEEi4Om14yTBOyHQnROSWZ6t NlIjpDgWuyz+EU0+h4VVp4zcvczx0XxmlX9MI3MlQ/mKYwAKPOiFUU3mVXzGb/K+oHqq cqHA== X-Gm-Message-State: AOAM532g3YaP6mufmWWqIdT6H/Hwh+zzSK8oO4g8jLlIa28oLjh/ODzS oA+q0rSBR2aDlG9c3vmV+UkcQSdQ5450Shg0 X-Google-Smtp-Source: ABdhPJw5gXaGU9KPYk1PiCb/CEVZULMimNDGuS3xIdvRwGNdXKnU+uOljBRGYEAw8BN9dj2gqYwScQ== X-Received: by 2002:a92:cd85:: with SMTP id r5mr21756013ilb.294.1622559691193; Tue, 01 Jun 2021 08:01:31 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 16/27] tcg/tci: Implement goto_ptr Date: Tue, 1 Jun 2021 08:00:55 -0700 Message-Id: <20210601150106.12761-17-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210601150106.12761-1-richard.henderson@linaro.org> References: <20210601150106.12761-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::130; envelope-from=richard.henderson@linaro.org; helo=mail-il1-x130.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+importer2=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) This operation is critical to staying within the interpretation loop longer, which avoids the overhead of setup and teardown for many TBs. The check in tcg_prologue_init is disabled because TCI does want to use NULL to indicate exit, as opposed to branching to a real epilogue. Tested-by: Philippe Mathieu-Daud=C3=A9 Signed-off-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- tcg/tci/tcg-target-con-set.h | 1 + tcg/tci/tcg-target.h | 2 +- tcg/tcg.c | 2 ++ tcg/tci.c | 19 +++++++++++++++++++ tcg/tci/tcg-target.c.inc | 16 ++++++++++++++++ 5 files changed, 39 insertions(+), 1 deletion(-) diff --git a/tcg/tci/tcg-target-con-set.h b/tcg/tci/tcg-target-con-set.h index 316730f32c..ae2dc3b844 100644 --- a/tcg/tci/tcg-target-con-set.h +++ b/tcg/tci/tcg-target-con-set.h @@ -9,6 +9,7 @@ * Each operand should be a sequence of constraint letters as defined by * tcg-target-con-str.h; the constraint combination is inclusive or. */ +C_O0_I1(r) C_O0_I2(r, r) C_O0_I3(r, r, r) C_O0_I4(r, r, r, r) diff --git a/tcg/tci/tcg-target.h b/tcg/tci/tcg-target.h index d953f2ead3..17911d3297 100644 --- a/tcg/tci/tcg-target.h +++ b/tcg/tci/tcg-target.h @@ -86,7 +86,7 @@ #define TCG_TARGET_HAS_muls2_i32 0 #define TCG_TARGET_HAS_muluh_i32 0 #define TCG_TARGET_HAS_mulsh_i32 0 -#define TCG_TARGET_HAS_goto_ptr 0 +#define TCG_TARGET_HAS_goto_ptr 1 #define TCG_TARGET_HAS_direct_jump 0 #define TCG_TARGET_HAS_qemu_st8_i32 0 =20 diff --git a/tcg/tcg.c b/tcg/tcg.c index c8e6dfb845..3d856371a1 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -1353,10 +1353,12 @@ void tcg_prologue_init(TCGContext *s) } #endif =20 +#ifndef CONFIG_TCG_INTERPRETER /* Assert that goto_ptr is implemented completely. */ if (TCG_TARGET_HAS_goto_ptr) { tcg_debug_assert(tcg_code_gen_epilogue !=3D NULL); } +#endif } =20 void tcg_func_start(TCGContext *s) diff --git a/tcg/tci.c b/tcg/tci.c index cb12de1cb5..3636b03adf 100644 --- a/tcg/tci.c +++ b/tcg/tci.c @@ -71,6 +71,11 @@ static void tci_args_l(uint32_t insn, const void *tb_ptr= , void **l0) *l0 =3D diff ? (void *)tb_ptr + diff : NULL; } =20 +static void tci_args_r(uint32_t insn, TCGReg *r0) +{ + *r0 =3D extract32(insn, 8, 4); +} + static void tci_args_nl(uint32_t insn, const void *tb_ptr, uint8_t *n0, void **l1) { @@ -737,6 +742,15 @@ uintptr_t QEMU_DISABLE_CFI tcg_qemu_tb_exec(CPUArchSta= te *env, tb_ptr =3D *(void **)ptr; break; =20 + case INDEX_op_goto_ptr: + tci_args_r(insn, &r0); + ptr =3D (void *)regs[r0]; + if (!ptr) { + return 0; + } + tb_ptr =3D ptr; + break; + case INDEX_op_qemu_ld_i32: if (TARGET_LONG_BITS <=3D TCG_TARGET_REG_BITS) { tci_args_rrm(insn, &r0, &r1, &oi); @@ -994,6 +1008,11 @@ int print_insn_tci(bfd_vma addr, disassemble_info *in= fo) info->fprintf_func(info->stream, "%-12s %p", op_name, ptr); break; =20 + case INDEX_op_goto_ptr: + tci_args_r(insn, &r0); + info->fprintf_func(info->stream, "%-12s %s", op_name, str_r(r0)); + break; + case INDEX_op_call: tci_args_nl(insn, tb_ptr, &len, &ptr); info->fprintf_func(info->stream, "%-12s %d, %p", op_name, len, pt= r); diff --git a/tcg/tci/tcg-target.c.inc b/tcg/tci/tcg-target.c.inc index acb5f6c75e..01a8e20c5d 100644 --- a/tcg/tci/tcg-target.c.inc +++ b/tcg/tci/tcg-target.c.inc @@ -27,6 +27,9 @@ static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op) { switch (op) { + case INDEX_op_goto_ptr: + return C_O0_I1(r); + case INDEX_op_ld8u_i32: case INDEX_op_ld8s_i32: case INDEX_op_ld16u_i32: @@ -263,6 +266,15 @@ static void tcg_out_op_p(TCGContext *s, TCGOpcode op, = void *p0) tcg_out32(s, insn); } =20 +static void tcg_out_op_r(TCGContext *s, TCGOpcode op, TCGReg r0) +{ + tcg_insn_unit insn =3D 0; + + insn =3D deposit32(insn, 0, 8, op); + insn =3D deposit32(insn, 8, 4, r0); + tcg_out32(s, insn); +} + static void tcg_out_op_v(TCGContext *s, TCGOpcode op) { tcg_out32(s, (uint8_t)op); @@ -565,6 +577,10 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc, set_jmp_reset_offset(s, args[0]); break; =20 + case INDEX_op_goto_ptr: + tcg_out_op_r(s, opc, args[0]); + break; + case INDEX_op_br: tcg_out_op_l(s, opc, arg_label(args[0])); break; --=20 2.25.1