From patchwork Mon Apr 28 09:58:52 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andreas Arnez X-Patchwork-Id: 714 Return-Path: X-Original-To: siddhesh@wilcox.dreamhost.com Delivered-To: siddhesh@wilcox.dreamhost.com Received: from homiemail-mx23.g.dreamhost.com (mx2.sub5.homie.mail.dreamhost.com [208.113.200.128]) by wilcox.dreamhost.com (Postfix) with ESMTP id 40DD636007C for ; Mon, 28 Apr 2014 02:59:03 -0700 (PDT) Received: by homiemail-mx23.g.dreamhost.com (Postfix, from userid 14314964) id 035AF6321701D; Mon, 28 Apr 2014 02:59:02 -0700 (PDT) X-Original-To: gdb@patchwork.siddhesh.in Delivered-To: x14314964@homiemail-mx23.g.dreamhost.com Received: from sourceware.org (server1.sourceware.org [209.132.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by homiemail-mx23.g.dreamhost.com (Postfix) with ESMTPS id D8463631BFB4D for ; Mon, 28 Apr 2014 02:59:02 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:cc:subject:references:date:in-reply-to :message-id:mime-version:content-type; q=dns; s=default; b=hCB9v j9H1jCi5OSn61mPDm7Q3xrdmj7qFVxG8ZRkh4cupxrBAFe8LyRGxA4bFm1HQW9NM gE+tU+tuSVgcKa8Pfi9NFMB3yOXHsSZWHUSy1/8osopKPsn2qLvGzmUp1wUslyGG EthIfQPKh3Vcne/omXPEU1ERQGVQqEUbYp800w= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:cc:subject:references:date:in-reply-to :message-id:mime-version:content-type; s=default; bh=S771irR8uwG TZ8NPFmaWajBEbog=; b=TpFmU8lpMMDftZRzIlE/g+MqXGJBfp68y1Z/XqKgOMV hjOafl1pnGsABwK6vlVaE8xzMFlmlb0M9JPSM0vocfesr/1uuj6Z3VpAzlrSvyyW +fd+kXuMv8TMsuaLxtqscExW/2ThFD+1zhsYCDnWMf7NWJiPPNY8QJFvOGgRyJv4 = Received: (qmail 14407 invoked by alias); 28 Apr 2014 09:59:01 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Delivered-To: mailing list gdb-patches@sourceware.org Received: (qmail 14395 invoked by uid 89); 28 Apr 2014 09:59:00 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.7 required=5.0 tests=AWL, BAYES_00, RP_MATCHES_RCVD, UNSUBSCRIBE_BODY autolearn=no version=3.3.2 X-HELO: e06smtp16.uk.ibm.com Received: from e06smtp16.uk.ibm.com (HELO e06smtp16.uk.ibm.com) (195.75.94.112) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-SHA encrypted) ESMTPS; Mon, 28 Apr 2014 09:59:00 +0000 Received: from /spool/local by e06smtp16.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Mon, 28 Apr 2014 10:58:54 +0100 Received: from b06cxnps4075.portsmouth.uk.ibm.com (d06relay12.portsmouth.uk.ibm.com [9.149.109.197]) by d06dlp03.portsmouth.uk.ibm.com (Postfix) with ESMTP id 48E001B08069 for ; Mon, 28 Apr 2014 10:59:01 +0100 (BST) Received: from d06av07.portsmouth.uk.ibm.com (d06av07.portsmouth.uk.ibm.com [9.149.37.248]) by b06cxnps4075.portsmouth.uk.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id s3S9wrLY63963170 for ; Mon, 28 Apr 2014 09:58:53 GMT Received: from d06av07.portsmouth.uk.ibm.com (localhost [127.0.0.1]) by d06av07.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id s3S9wrB8029809 for ; Mon, 28 Apr 2014 05:58:53 -0400 Received: from br87z6lw.de.ibm.com (dyn-9-152-212-188.boeblingen.de.ibm.com [9.152.212.188]) by d06av07.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id s3S9wqsU029786; Mon, 28 Apr 2014 05:58:53 -0400 From: Andreas Arnez To: gdb-patches@sourceware.org Cc: Kei Sakamoto Subject: [RFC 18/23] M32R Linux: Fill 'collect_regset' in regset structure References: <87eh0h6bkq.fsf@br87z6lw.de.ibm.com> Date: Mon, 28 Apr 2014 11:58:52 +0200 In-Reply-To: <87eh0h6bkq.fsf@br87z6lw.de.ibm.com> (Andreas Arnez's message of "Mon, 28 Apr 2014 11:35:33 +0200") Message-ID: <8761lt3hcz.fsf@br87z6lw.de.ibm.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.3 (gnu/linux) MIME-Version: 1.0 X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14042809-3548-0000-0000-000008E005A2 X-IsSubscribed: yes X-DH-Original-To: gdb@patchwork.siddhesh.in gdb/ * m32r-linux-tdep.c (M32R_LINUX_GREGS_SIZE): New macro. (m32r_linux_supply_gregset): Make platform-independent and don't write to read-only input buffer. (m32r_linux_collect_gregset): New function. (m32r_linux_gregset): Add collect method. --- gdb/m32r-linux-tdep.c | 81 +++++++++++++++++++++++++++++++++++++++------------ 1 file changed, 63 insertions(+), 18 deletions(-) diff --git a/gdb/m32r-linux-tdep.c b/gdb/m32r-linux-tdep.c index bf1ffff..5eaca6e 100644 --- a/gdb/m32r-linux-tdep.c +++ b/gdb/m32r-linux-tdep.c @@ -346,19 +346,26 @@ static int m32r_pt_regs_offset[] = { #define SPU_OFFSET (4 * 23) #define SPI_OFFSET (4 * 26) +#define M32R_LINUX_GREGS_SIZE (4 * 27) + static void m32r_linux_supply_gregset (const struct regset *regset, struct regcache *regcache, int regnum, const void *gregs, size_t size) { - const char *regs = gregs; - unsigned long psw, bbpsw; + const gdb_byte *regs = gregs; + enum bfd_endian byte_order = + gdbarch_byte_order (get_regcache_arch (regcache)); + ULONGEST psw, bbpsw; + gdb_byte buf[4]; + const gdb_byte *p; int i; - psw = *((unsigned long *) (regs + PSW_OFFSET)); - bbpsw = *((unsigned long *) (regs + BBPSW_OFFSET)); + psw = extract_unsigned_integer (regs + PSW_OFFSET, 4, byte_order); + bbpsw = extract_unsigned_integer (regs + BBPSW_OFFSET, 4, byte_order); + psw = ((0x00c1 & bbpsw) << 8) | ((0xc100 & psw) >> 8); - for (i = 0; i < sizeof (m32r_pt_regs_offset) / 4; i++) + for (i = 0; i < ARRAY_SIZE (m32r_pt_regs_offset); i++) { if (regnum != -1 && regnum != i) continue; @@ -366,30 +373,68 @@ m32r_linux_supply_gregset (const struct regset *regset, switch (i) { case PSW_REGNUM: - *((unsigned long *) (regs + m32r_pt_regs_offset[i])) = - ((0x00c1 & bbpsw) << 8) | ((0xc100 & psw) >> 8); + store_unsigned_integer (buf, 4, byte_order, psw); + p = buf; break; case CBR_REGNUM: - *((unsigned long *) (regs + m32r_pt_regs_offset[i])) = - ((psw >> 8) & 1); + store_unsigned_integer (buf, 4, byte_order, psw & 1); + p = buf; break; case M32R_SP_REGNUM: - if (psw & 0x8000) - *((unsigned long *) (regs + m32r_pt_regs_offset[i])) = - *((unsigned long *) (regs + SPU_OFFSET)); - else - *((unsigned long *) (regs + m32r_pt_regs_offset[i])) = - *((unsigned long *) (regs + SPI_OFFSET)); + p = regs + ((psw & 0x80) ? SPU_OFFSET : SPI_OFFSET); break; + default: + p = regs + m32r_pt_regs_offset[i]; } - regcache_raw_supply (regcache, i, - regs + m32r_pt_regs_offset[i]); + regcache_raw_supply (regcache, i, p); + } +} + +static void +m32r_linux_collect_gregset (const struct regset *regset, + const struct regcache *regcache, + int regnum, void *gregs, size_t size) +{ + gdb_byte *regs = gregs; + int i; + enum bfd_endian byte_order = + gdbarch_byte_order (get_regcache_arch (regcache)); + ULONGEST psw; + gdb_byte buf[4]; + + regcache_raw_collect (regcache, PSW_REGNUM, buf); + psw = extract_unsigned_integer (buf, 4, byte_order); + + for (i = 0; i < ARRAY_SIZE (m32r_pt_regs_offset); i++) + { + if (regnum != -1 && regnum != i) + continue; + + switch (i) + { + case PSW_REGNUM: + store_unsigned_integer (regs + PSW_OFFSET, 4, byte_order, + (psw & 0xc1) << 8); + store_unsigned_integer (regs + BBPSW_OFFSET, 4, byte_order, + (psw >> 8) & 0xc1); + break; + case CBR_REGNUM: + break; + case M32R_SP_REGNUM: + regcache_raw_collect (regcache, i, regs + + ((psw & 0x80) ? SPU_OFFSET : SPI_OFFSET)); + break; + default: + regcache_raw_collect (regcache, i, + regs + m32r_pt_regs_offset[i]); + } } } static const struct regset m32r_linux_gregset = { - NULL, m32r_linux_supply_gregset + NULL, + m32r_linux_supply_gregset, m32r_linux_collect_gregset }; static const struct regset *