From patchwork Mon Nov 7 23:58:20 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= X-Patchwork-Id: 13035548 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id F09EAC4332F for ; Tue, 8 Nov 2022 00:02:44 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1osC1Y-00054x-Hb; Mon, 07 Nov 2022 18:59:28 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1osC1W-0004z3-A8 for qemu-devel@nongnu.org; Mon, 07 Nov 2022 18:59:26 -0500 Received: from mail-wm1-x32a.google.com ([2a00:1450:4864:20::32a]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1osC1U-0003pf-L4 for qemu-devel@nongnu.org; Mon, 07 Nov 2022 18:59:26 -0500 Received: by mail-wm1-x32a.google.com with SMTP id j5-20020a05600c410500b003cfa9c0ea76so2689383wmi.3 for ; Mon, 07 Nov 2022 15:59:24 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=zpwW1WmuKF4HLpSpU3/p7YGXqdSMsI7/VzGcJtnIKNo=; b=rvuIrsoikCvbuWDy4CRkhV5BXANnqK94hhBIlNEvIiYqzktdQZ5Hzs7RBc9tQ796P0 lvDnRZX0FGrmv1Q5mbc3BrWUY7H/vgwb8cC8UOoHPVCTrnqs7rOFHLEYXHmku/X3yImt eAXFhqVyOATEoazimz/zIlpXCC1iRV07wRXzxIy0THeTe6r8MCYLdkpxAxRehF/V+BfY HDX/kkq8QZgr6XuLphLE3PgElYi2Wl8UXMVFBKIYm3XTHJbcLSG/VITaMwF8WeGG29+9 ORoRCePQE5GwjDg1B5+PwK0QGFdVTVsw/tocWABx5k7r2S7/wvDKps7bgGvpTPHhVVcr JMEA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=zpwW1WmuKF4HLpSpU3/p7YGXqdSMsI7/VzGcJtnIKNo=; b=njVzguUvAub5grnbW6kdNr9HKJAF8MpteWgSGcr5EwRkiiU0LZVdGvEFE/XsQ7i92B t4GsYzrU7Ylalg7sRjH80sf4RPvE/+EoJMC5Exn3elysTNIt+8TO4KBCMsy8R9+TISrE Vh288rkbrS4qvSDIRTKtI1lNjg2X/xKfV3n5psLopQ0mZxTGKVt1r8t62f+iQr33CnsC zkLaLVsotE/FsMMgIQptad6Gz07iQh0mVMFW8HUjnMY0q4j9qeY4EBgIsfNtgZwXzPEE dPpyTh4DHO1chY/u+oQNsXSp14iO18q1SRa3XDRW3wGN8a28kBC4vBWqAv22MynJgn11 tnHg== X-Gm-Message-State: ACrzQf0MM/yz/RCAeb1KbbKvJs6SU8uxInPs1dT1BUrf0x5lwc3iVspq tnsh4GrBOqWkrf2E9FjQ4IWKZIKgDQwfHg== X-Google-Smtp-Source: AMsMyM52NisXFso+92PeaRKU/2ynGKUx9S0P0KCNsiz2gw13t4SuXJ96lYs+tcoJ229SloRPMBRExA== X-Received: by 2002:a05:600c:424c:b0:3cf:6cbc:91fc with SMTP id r12-20020a05600c424c00b003cf6cbc91fcmr32129275wmm.90.1667865563232; Mon, 07 Nov 2022 15:59:23 -0800 (PST) Received: from localhost.localdomain ([185.126.107.38]) by smtp.gmail.com with ESMTPSA id t188-20020a1c46c5000000b003cfa622a18asm6145156wma.3.2022.11.07.15.59.22 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Mon, 07 Nov 2022 15:59:22 -0800 (PST) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Aurelien Jarno , Aleksandar Rikalo , Jiaxun Yang , Richard Henderson Subject: [PULL 12/14] disas/nanomips: Split out read_u16 Date: Tue, 8 Nov 2022 00:58:20 +0100 Message-Id: <20221107235822.71458-13-philmd@linaro.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221107235822.71458-1-philmd@linaro.org> References: <20221107235822.71458-1-philmd@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::32a; envelope-from=philmd@linaro.org; helo=mail-wm1-x32a.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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Richard Henderson Split out a helper function for reading a uint16_t with the correct endianness. Signed-off-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daudé Message-Id: <20221106023735.5277-4-richard.henderson@linaro.org> --- disas/nanomips.c | 48 +++++++++++++++++++----------------------------- 1 file changed, 19 insertions(+), 29 deletions(-) diff --git a/disas/nanomips.c b/disas/nanomips.c index e462256760..3b998118e3 100644 --- a/disas/nanomips.c +++ b/disas/nanomips.c @@ -21918,10 +21918,24 @@ static bool nanomips_dis(const uint16_t *data, char **buf, Dis_info *info) return Disassemble(data, buf, &type, MAJOR, ARRAY_SIZE(MAJOR), info) >= 0; } +static bool read_u16(uint16_t *ret, bfd_vma memaddr, + struct disassemble_info *info) +{ + int status = (*info->read_memory_func)(memaddr, (bfd_byte *)ret, 2, info); + if (status != 0) { + (*info->memory_error_func)(status, memaddr, info); + return false; + } + + if ((info->endian == BFD_ENDIAN_BIG) != HOST_BIG_ENDIAN) { + bswap16s(ret); + } + return true; +} + int print_insn_nanomips(bfd_vma memaddr, struct disassemble_info *info) { - int status, length; - bfd_byte buffer[2]; + int length; uint16_t words[3] = { }; g_autofree char *buf = NULL; @@ -21939,48 +21953,24 @@ int print_insn_nanomips(bfd_vma memaddr, struct disassemble_info *info) disassm_info.fprintf_func = info->fprintf_func; disassm_info.stream = info->stream; - status = (*info->read_memory_func)(memaddr, buffer, 2, info); - if (status != 0) { - (*info->memory_error_func)(status, memaddr, info); + if (!read_u16(&words[0], memaddr, info)) { return -1; } - - if (info->endian == BFD_ENDIAN_BIG) { - words[0] = bfd_getb16(buffer); - } else { - words[0] = bfd_getl16(buffer); - } length = 2; /* Handle 32-bit opcodes. */ if ((words[0] & 0x1000) == 0) { - status = (*info->read_memory_func)(memaddr + 2, buffer, 2, info); - if (status != 0) { - (*info->memory_error_func)(status, memaddr + 2, info); + if (!read_u16(&words[1], memaddr + 2, info)) { return -1; } - - if (info->endian == BFD_ENDIAN_BIG) { - words[1] = bfd_getb16(buffer); - } else { - words[1] = bfd_getl16(buffer); - } length = 4; } /* Handle 48-bit opcodes. */ if ((words[0] >> 10) == 0x18) { - status = (*info->read_memory_func)(memaddr + 4, buffer, 2, info); - if (status != 0) { - (*info->memory_error_func)(status, memaddr + 4, info); + if (!read_u16(&words[1], memaddr + 4, info)) { return -1; } - - if (info->endian == BFD_ENDIAN_BIG) { - words[2] = bfd_getb16(buffer); - } else { - words[2] = bfd_getl16(buffer); - } length = 6; }