From nobody Mon Feb 9 14:38:04 2026 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.zoho.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 1493106980690587.1545488413167; Tue, 25 Apr 2017 00:56:20 -0700 (PDT) Received: from localhost ([::1]:47564 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d2vKc-0001IB-U2 for importer@patchew.org; Tue, 25 Apr 2017 03:56:18 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33753) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d2vIf-0008FW-JQ for qemu-devel@nongnu.org; Tue, 25 Apr 2017 03:54:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d2vIe-0000j9-KG for qemu-devel@nongnu.org; Tue, 25 Apr 2017 03:54:17 -0400 Received: from out4-smtp.messagingengine.com ([66.111.4.28]:33729) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1d2vIc-0000f9-4R; Tue, 25 Apr 2017 03:54:14 -0400 Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailout.nyi.internal (Postfix) with ESMTP id 8109421F1D; Tue, 25 Apr 2017 03:54:03 -0400 (EDT) Received: from frontend1 ([10.202.2.160]) by compute4.internal (MEProxy); Tue, 25 Apr 2017 03:54:03 -0400 Received: from localhost (flamenco.cs.columbia.edu [128.59.20.216]) by mail.messagingengine.com (Postfix) with ESMTPA id 386BE7E43A; Tue, 25 Apr 2017 03:54:03 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=braap.org; h=cc :date:from:in-reply-to:message-id:references:subject:to :x-me-sender:x-me-sender:x-sasl-enc:x-sasl-enc; s=mesmtp; bh=UOv 20f+l1GAVhovfE4nm/88IpJJkIuWQxnw7tUCAEms=; b=v2M1NfeX/ashrxWTtaN I5D7nq/rCz6T3ENn8W80xZqvwrs4hlOXvMxTjltL3vLb/7gVwzYQlDI8M7ePBvhT YPBLGM70pqTgLwzF/s+jJWm83smZxPfj19XPSDpECG96v8wUPeR9aAtxwLhmxmb0 hY1bJvBPvjRMsyF+5PVg8O1c= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:date:from:in-reply-to:message-id :references:subject:to:x-me-sender:x-me-sender:x-sasl-enc :x-sasl-enc; s=fm1; bh=UOv20f+l1GAVhovfE4nm/88IpJJkIuWQxnw7tUCAE ms=; b=Afh44ijy/u5TMlhmNMCbf3GPKEIwXaxJXL/s+zYWLHHlBil3Cyi5cDt2Z CXm3VWrXVKK4CMXdR/HgIOFEqBF9L+5Odth7yW1VQc+lq7inyzho0tMEpbfJfIK9 Qg6WSXDK48VPeoVunzov8HSkQdvqwONu5Ei4SQrYnGpqjr+TG9vbTq1E7vcOsBZI Fkwk9anQY316y0NM5sUUjeGR9eg4/sX7V2ucYNJx8AYDSuYwjspd86QaP7pRQeB+ MdBCx2HG4TMRVvmG6mvco65Pahcp/qiz2FlR+EJ+LE0bTadW91Fcz4pbflt5JeIz c1+SYEnZOkgZVxlom1gMyEACBc8Zg== X-ME-Sender: X-Sasl-enc: ePeeqD7T8sZF3WOmvFafcqyZu2z64H3tf2JaKdSpLtfA 1493106843 From: "Emilio G. Cota" To: qemu-devel@nongnu.org Date: Tue, 25 Apr 2017 03:53:47 -0400 Message-Id: <1493106839-10438-2-git-send-email-cota@braap.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1493106839-10438-1-git-send-email-cota@braap.org> References: <1493106839-10438-1-git-send-email-cota@braap.org> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.111.4.28 Subject: [Qemu-devel] [PATCH v2 01/13] exec-all: add tb_from_jmp_cache 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 , Eduardo Habkost , Peter Crosthwaite , Stefan Weil , Alexander Graf , alex.bennee@linaro.org, qemu-arm@nongnu.org, Pranith Kumar , Paolo Bonzini , Aurelien Jarno , Richard Henderson 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" This paves the way for upcoming changes. Signed-off-by: Emilio G. Cota --- cpu-exec.c | 19 +++++++++++++++++++ include/exec/exec-all.h | 2 +- 2 files changed, 20 insertions(+), 1 deletion(-) diff --git a/cpu-exec.c b/cpu-exec.c index 63a56d0..b4adf16 100644 --- a/cpu-exec.c +++ b/cpu-exec.c @@ -309,6 +309,25 @@ static bool tb_cmp(const void *p, const void *d) return false; } =20 +TranslationBlock *tb_from_jmp_cache(CPUArchState *env, target_ulong vaddr) +{ + CPUState *cpu =3D ENV_GET_CPU(env); + TranslationBlock *tb; + target_ulong cs_base, pc; + uint32_t flags; + + if (unlikely(atomic_read(&cpu->exit_request))) { + return NULL; + } + cpu_get_tb_cpu_state(env, &pc, &cs_base, &flags); + tb =3D atomic_rcu_read(&cpu->tb_jmp_cache[tb_jmp_cache_hash_func(vaddr= )]); + if (likely(tb && tb->pc =3D=3D vaddr && tb->cs_base =3D=3D cs_base && + tb->flags =3D=3D flags)) { + return tb; + } + return NULL; +} + static TranslationBlock *tb_htable_lookup(CPUState *cpu, target_ulong pc, target_ulong cs_base, diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h index bcde1e6..18b80bc 100644 --- a/include/exec/exec-all.h +++ b/include/exec/exec-all.h @@ -56,7 +56,6 @@ TranslationBlock *tb_gen_code(CPUState *cpu, target_ulong pc, target_ulong cs_base, uint32_t flags, int cflags); - void QEMU_NORETURN cpu_loop_exit(CPUState *cpu); void QEMU_NORETURN cpu_loop_exit_restore(CPUState *cpu, uintptr_t pc); void QEMU_NORETURN cpu_loop_exit_atomic(CPUState *cpu, uintptr_t pc); @@ -368,6 +367,7 @@ struct TranslationBlock { void tb_free(TranslationBlock *tb); void tb_flush(CPUState *cpu); void tb_phys_invalidate(TranslationBlock *tb, tb_page_addr_t page_addr); +TranslationBlock *tb_from_jmp_cache(CPUArchState *env, target_ulong vaddr); =20 #if defined(USE_DIRECT_JUMP) =20 --=20 2.7.4