From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47770) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1derpM-0005yP-Ga for qemu-devel@nongnu.org; Mon, 07 Aug 2017 19:52:58 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1derpH-0005iZ-2G for qemu-devel@nongnu.org; Mon, 07 Aug 2017 19:52:52 -0400 Received: from out1-smtp.messagingengine.com ([66.111.4.25]:43859) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1derpG-0005hx-U4 for qemu-devel@nongnu.org; Mon, 07 Aug 2017 19:52:47 -0400 From: "Emilio G. Cota" Date: Mon, 7 Aug 2017 19:52:25 -0400 Message-Id: <1502149958-23381-10-git-send-email-cota@braap.org> In-Reply-To: <1502149958-23381-1-git-send-email-cota@braap.org> References: <1502149958-23381-1-git-send-email-cota@braap.org> Subject: [Qemu-devel] [PATCH 09/22] translate-all: introduce iterator macros for tagged TB lists List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Richard Henderson These will soon gain a couple of users. Signed-off-by: Emilio G. Cota --- accel/tcg/translate-all.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c index 8f6f8f1..396c10c 100644 --- a/accel/tcg/translate-all.c +++ b/accel/tcg/translate-all.c @@ -115,6 +115,25 @@ typedef struct PageDesc { #endif } PageDesc; +/* list iterators for lists of tagged pointers in TranslationBlock */ +#define tb_for_each_tagged(head, tb, n, field) \ + for (n = (head) & 1, \ + tb = (TranslationBlock *)((head) & ~1); \ + tb; \ + tb = (TranslationBlock *)tb->field[n], \ + n = (uintptr_t)tb & 1, \ + tb = (TranslationBlock *)((uintptr_t)tb & ~1)) + +/* prev is a *uintptr_t. It allows us to safely remove tb */ +#define tb_for_each_tagged_safe(head, tb, n, field, prev) \ + for (prev = &(head), \ + n = *prev & 1, \ + tb = (TranslationBlock *)(*prev & ~1); \ + tb; \ + prev = &tb->field[n], \ + n = (uintptr_t)*prev & 1, \ + tb = (TranslationBlock *)(*prev & ~1)) + /* In system mode we want L1_MAP to be based on ram offsets, while in user mode we want it to be based on virtual addresses. */ #if !defined(CONFIG_USER_ONLY) -- 2.7.4