From patchwork Sun Feb 23 06:50:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Yoshinori Sato X-Patchwork-Id: 183744 Delivered-To: patch@linaro.org Received: by 2002:a92:1f12:0:0:0:0:0 with SMTP id i18csp3929156ile; Sat, 22 Feb 2020 22:51:32 -0800 (PST) X-Google-Smtp-Source: APXvYqwq0xOVCpKRH+/BAhOUYxxAPbEGocnJVeJa61CMhe5j51u4x4dPomXbF7lxQA9Gz80rnIKp X-Received: by 2002:a37:9d8c:: with SMTP id g134mr42870061qke.73.1582440692760; Sat, 22 Feb 2020 22:51:32 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1582440692; cv=none; d=google.com; s=arc-20160816; b=JN8eozQDw/X9UBU9sK9QUWR3hW7/MAMWLsedmI5n3TCIAr8K7QXN3U5Kr88Mojx5nP g6gwyCW/HbVqBnSGrzjWpx3q1wVD14JA1tbXcVwkAk/zrzdZIQFzv0/3Ke5ua68orATd S8zbpkgnJFmA+wlkpbMtqkkyaRv2lvBU4oKxyHJpWN7IXkjiP7ocT6cjTHqd1gbd5v6D jZyKxnvi81CZFRY00nOn+Pf25r6sKo9nG9g8idWokn5hpFMczM5bMo8vDNLKNvcdXufu SKCuZiotxBq+3te+JUlkEHXk+NDgFxfh69d3aYO8rZih4a6+W+DFZXuihl06Fu1tXu/I qQlQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:cc:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:to:from; bh=iUBrg0inbEBl3V6cTQTXpEl9w4QTbbB/0f2WLn8DJxI=; b=K3t9mru9wISDa1Cbx/V1OEZ87rmNRU59MwffH0VydO99Bi4xVfcDCTxPEcjfcS8u7p nWPrIyNNJbbkwl61EWne47OvlmGPGzvAHp7t3VuqOxI/YSp2WfOFONKmYcq13HTioELj xIQ2lW4F9C/2YoqWJ/l6phqHEmEG5h+1kXwKkTm664qT6ReEw/hhm8au2lAXYw/k3o91 jEAc2KUN+AMesTT2dtmUfyW4BgAGLkkLQdvjFD/GNikJ/VnTUJKTvPpGNKIz1b3wfHkr /EddUeQAgd2TKmFI8mvkBSghxZ3WfUKB6wnMx0McDB20e/0VxzbDb5B9B8khJPZxTNyH DXiQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org" Return-Path: Received: from lists.gnu.org (lists.gnu.org. [209.51.188.17]) by mx.google.com with ESMTPS id h8si3812687qka.68.2020.02.22.22.51.32 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sat, 22 Feb 2020 22:51:32 -0800 (PST) Received-SPF: pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org" Received: from localhost ([::1]:49990 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j5l6y-0004NH-7E for patch@linaro.org; Sun, 23 Feb 2020 01:51:32 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:34438) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j5l6j-0004HA-0i for qemu-devel@nongnu.org; Sun, 23 Feb 2020 01:51:18 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1j5l6h-0004kO-Dn for qemu-devel@nongnu.org; Sun, 23 Feb 2020 01:51:16 -0500 Received: from mail01.asahi-net.or.jp ([202.224.55.13]:38295) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1j5l6h-0004iG-3S for qemu-devel@nongnu.org; Sun, 23 Feb 2020 01:51:15 -0500 Received: from h61-195-96-97.vps.ablenet.jp (h61-195-96-97.ablenetvps.ne.jp [61.195.96.97]) (Authenticated sender: PQ4Y-STU) by mail01.asahi-net.or.jp (Postfix) with ESMTPA id 69F1653DA8; Sun, 23 Feb 2020 15:51:14 +0900 (JST) Received: from yo-satoh-debian.localdomain (ZM005235.ppp.dion.ne.jp [222.8.5.235]) by h61-195-96-97.vps.ablenet.jp (Postfix) with ESMTPSA id 18571240093; Sun, 23 Feb 2020 15:51:14 +0900 (JST) From: Yoshinori Sato To: qemu-devel@nongnu.org Subject: [PATCH v31 12/22] target/rx: Collect all bytes during disassembly Date: Sun, 23 Feb 2020 15:50:52 +0900 Message-Id: <20200223065102.61652-13-ysato@users.sourceforge.jp> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200223065102.61652-1-ysato@users.sourceforge.jp> References: <20200223065102.61652-1-ysato@users.sourceforge.jp> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 202.224.55.13 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: philmd@redhat.com, Richard Henderson , Yoshinori Sato Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: "Qemu-devel" From: Richard Henderson Collected, to be used in the next patch. Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Yoshinori Sato Signed-off-by: Yoshinori Sato Message-Id: <20190607091116.49044-23-ysato@users.sourceforge.jp> Tested-by: Philippe Mathieu-Daudé Signed-off-by: Richard Henderson --- target/rx/disas.c | 62 ++++++++++++++++++++++++++++++++--------------- 1 file changed, 42 insertions(+), 20 deletions(-) -- 2.20.1 diff --git a/target/rx/disas.c b/target/rx/disas.c index ebc1a44249..5a32a87534 100644 --- a/target/rx/disas.c +++ b/target/rx/disas.c @@ -25,43 +25,59 @@ typedef struct DisasContext { disassemble_info *dis; uint32_t addr; uint32_t pc; + uint8_t len; + uint8_t bytes[8]; } DisasContext; static uint32_t decode_load_bytes(DisasContext *ctx, uint32_t insn, - int i, int n) + int i, int n) { - bfd_byte buf; + uint32_t addr = ctx->addr; + + g_assert(ctx->len == i); + g_assert(n <= ARRAY_SIZE(ctx->bytes)); + while (++i <= n) { - ctx->dis->read_memory_func(ctx->addr++, &buf, 1, ctx->dis); - insn |= buf << (32 - i * 8); + ctx->dis->read_memory_func(addr++, &ctx->bytes[i - 1], 1, ctx->dis); + insn |= ctx->bytes[i - 1] << (32 - i * 8); } + ctx->addr = addr; + ctx->len = n; + return insn; } static int32_t li(DisasContext *ctx, int sz) { - int32_t addr; - bfd_byte buf[4]; - addr = ctx->addr; + uint32_t addr = ctx->addr; + uintptr_t len = ctx->len; switch (sz) { case 1: + g_assert(len + 1 <= ARRAY_SIZE(ctx->bytes)); ctx->addr += 1; - ctx->dis->read_memory_func(addr, buf, 1, ctx->dis); - return (int8_t)buf[0]; + ctx->len += 1; + ctx->dis->read_memory_func(addr, ctx->bytes + len, 1, ctx->dis); + return (int8_t)ctx->bytes[len]; case 2: + g_assert(len + 2 <= ARRAY_SIZE(ctx->bytes)); ctx->addr += 2; - ctx->dis->read_memory_func(addr, buf, 2, ctx->dis); - return ldsw_le_p(buf); + ctx->len += 2; + ctx->dis->read_memory_func(addr, ctx->bytes + len, 2, ctx->dis); + return ldsw_le_p(ctx->bytes + len); case 3: + g_assert(len + 3 <= ARRAY_SIZE(ctx->bytes)); ctx->addr += 3; - ctx->dis->read_memory_func(addr, buf, 3, ctx->dis); - return (int8_t)buf[2] << 16 | lduw_le_p(buf); + ctx->len += 3; + ctx->dis->read_memory_func(addr, ctx->bytes + len, 3, ctx->dis); + return (int8_t)ctx->bytes[len + 2] << 16 | lduw_le_p(ctx->bytes + len); case 0: + g_assert(len + 4 <= ARRAY_SIZE(ctx->bytes)); ctx->addr += 4; - ctx->dis->read_memory_func(addr, buf, 4, ctx->dis); - return ldl_le_p(buf); + ctx->len += 4; + ctx->dis->read_memory_func(addr, ctx->bytes + len, 4, ctx->dis); + return ldl_le_p(ctx->bytes + len); default: g_assert_not_reached(); } @@ -110,7 +126,7 @@ static const char psw[] = { static void rx_index_addr(DisasContext *ctx, char out[8], int ld, int mi) { uint32_t addr = ctx->addr; - uint8_t buf[2]; + uintptr_t len = ctx->len; uint16_t dsp; switch (ld) { @@ -119,14 +135,18 @@ static void rx_index_addr(DisasContext *ctx, char out[8], int ld, int mi) out[0] = '\0'; return; case 1: + g_assert(len + 1 <= ARRAY_SIZE(ctx->bytes)); ctx->addr += 1; - ctx->dis->read_memory_func(addr, buf, 1, ctx->dis); - dsp = buf[0]; + ctx->len += 1; + ctx->dis->read_memory_func(addr, ctx->bytes + len, 1, ctx->dis); + dsp = ctx->bytes[len]; break; case 2: + g_assert(len + 2 <= ARRAY_SIZE(ctx->bytes)); ctx->addr += 2; - ctx->dis->read_memory_func(addr, buf, 2, ctx->dis); - dsp = lduw_le_p(buf); + ctx->len += 2; + ctx->dis->read_memory_func(addr, ctx->bytes + len, 2, ctx->dis); + dsp = lduw_le_p(ctx->bytes + len); break; default: g_assert_not_reached(); @@ -1392,8 +1412,10 @@ int print_insn_rx(bfd_vma addr, disassemble_info *dis) DisasContext ctx; uint32_t insn; int i; + ctx.dis = dis; ctx.pc = ctx.addr = addr; + ctx.len = 0; insn = decode_load(&ctx); if (!decode(&ctx, insn)) {