From patchwork Sat Dec 21 14:42:29 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Yoshinori Sato X-Patchwork-Id: 182358 Delivered-To: patch@linaro.org Received: by 2002:a92:1f98:0:0:0:0:0 with SMTP id f24csp1894593ilf; Sat, 21 Dec 2019 06:55:11 -0800 (PST) X-Google-Smtp-Source: APXvYqwnIELclMiVmDYQdzUVc7USI1s9oj4brOAYxolx+iMRgyypDgo33wv4gzpQ1wuBEbq/6Qkw X-Received: by 2002:a9d:6005:: with SMTP id h5mr22207838otj.153.1576940111426; Sat, 21 Dec 2019 06:55:11 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1576940111; cv=none; d=google.com; s=arc-20160816; b=BwEOJLQ2Y8vw/F7wfRdknSG2zn1zQByOfmBOixppTC4YQxPNDgmgOe4VE0QZYxd7yy UojgRM5B+wSisINzpVYxyKTY4CdlUO3xV6ackyPTBBd/g9Nq4LZopqHvr26/yCQc3K8z +9k6NiPljurCNgEbjUnzlaaqM7Ds8bvH9XgqWWEN2EaRDoEsEDlf9XaO6bDeA8sYmfm2 Cl1tLq1/5MFDd7+dN2TAUPAndvEXLVamRTE2B2nub6N1DWai6VnRIDv/BNWjIRHXLZlP 3cmL9nU4Kc1u5dJAtVuNo2mNCKOW/NvX1k3YbD9ER1Uqr7SAKhQ3kw9J1IW1Oze3BiRm ZWLQ== 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=nAydDRqZQysx6o5JIHNFInlcn1+l9iCFXtWs284F+lY6smUX3sYGFN9nIZtEWg3DXE tBJnpj9ElFbtscWQLkAVGhbwuaIKNJWT07zOo7rtK76WROU06WIBlR7W1FHm/Z5iSUKY GenwByg6hWxkPF5xIJkFV3augHrR8bVbU3LaZq3diNNav76QJ91GWZtato1zeIpnBVZp btTwVowdQcqyG+thQsWSo2PugIBgelE5PHQ7Qv6aNecPyqmn+gFozxCBax3IRZcNHtsm 4DLyy+ZoarhS65d+YECQ2csQ0dATmzVXinBfSHy9J9Aunpf36zl/Thz1RCKrEUrSujcs +2nw== 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 f190si6751584oig.229.2019.12.21.06.55.11 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sat, 21 Dec 2019 06:55:11 -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]:39828 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iig9u-00057L-FY for patch@linaro.org; Sat, 21 Dec 2019 09:55:10 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:46430) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iify1-0005FN-JI for qemu-devel@nongnu.org; Sat, 21 Dec 2019 09:42:56 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iifxz-0002BT-PC for qemu-devel@nongnu.org; Sat, 21 Dec 2019 09:42:53 -0500 Received: from mail02.asahi-net.or.jp ([202.224.55.14]:33422) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1iifxy-00027o-QP for qemu-devel@nongnu.org; Sat, 21 Dec 2019 09:42:51 -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 mail02.asahi-net.or.jp (Postfix) with ESMTPA id 0ABD1B1DD1; Sat, 21 Dec 2019 23:42:50 +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 BBD5624008F; Sat, 21 Dec 2019 23:42:49 +0900 (JST) From: Yoshinori Sato To: qemu-devel@nongnu.org Subject: [PATCH v27 12/21] target/rx: Collect all bytes during disassembly Date: Sat, 21 Dec 2019 23:42:29 +0900 Message-Id: <20191221144238.127766-13-ysato@users.sourceforge.jp> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191221144238.127766-1-ysato@users.sourceforge.jp> References: <20191221144238.127766-1-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: 202.224.55.14 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)) {