From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 15 Mar 2021 09:39:10 +0100 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1lLiko-0000bl-Ig for lore@lore.pengutronix.de; Mon, 15 Mar 2021 09:39:10 +0100 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lLikn-0003K2-B2 for lore@pengutronix.de; Mon, 15 Mar 2021 09:39:10 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:From:In-Reply-To:MIME-Version:References:Message-ID: Subject:Cc:To:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=soT2PkFMF5s57SHDoOWTDALIyjQLgZVZOomgnEKv0kE=; b=nqfEZOOje+OjkARgDgw+IfHbe 3JsLUQGmUB/WhtUJ5FKSf6LBeX3RcdcvVlcDx4Ki5ltyJTS7KP4jssNGExoXbycRtRMVr2AFpKPSb V2/ZrNPY8PG+0AK5ZvQmedIHHsGR9zM36YC07Q8t7UYyrEDRJNL9dF1yGGKF1sM1F3clACmz636SJ VjNp/qTtc/Rpp6bnW1dGISlTGk36l87bacznMDvM8/c+suGh8lHNl6xMN4Td2DRJY3+Ma0dH0Ab2b 0Uh1Mc7nvmzQNpdJiQP9cK4DK8shTYyDayuoPpsskJyyoPLzUI1x0wZprLurhQ+NP9cQaSNy+ANAz 023ThPsJQ==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lLijR-00FFUt-9E; Mon, 15 Mar 2021 08:37:45 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lLih1-00FEvh-63 for barebox@lists.infradead.org; Mon, 15 Mar 2021 08:35:24 +0000 Received: from ptx.hi.pengutronix.de ([2001:67c:670:100:1d::c0]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lLih0-0002Y7-O1; Mon, 15 Mar 2021 09:35:14 +0100 Received: from sha by ptx.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1lLih0-0006oI-4L; Mon, 15 Mar 2021 09:35:14 +0100 Date: Mon, 15 Mar 2021 09:35:14 +0100 To: Jules Maselbas Cc: barebox@lists.infradead.org, Yann Sionneau , Ahmad Fatoum Message-ID: <20210315083514.GL23724@pengutronix.de> References: <20210305183327.29753-1-jmaselbas@kalray.eu> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210305183327.29753-1-jmaselbas@kalray.eu> X-Sent-From: Pengutronix Hildesheim X-URL: http://www.pengutronix.de/ X-IRC: #ptxdist @freenode X-Accept-Language: de,en X-Accept-Content-Type: text/plain X-Uptime: 09:35:03 up 25 days, 11:58, 79 users, load average: 0.15, 0.18, 0.20 User-Agent: Mutt/1.10.1 (2018-07-13) From: Sascha Hauer X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210315_083519_278000_D7087E33 X-CRM114-Status: GOOD ( 26.43 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" X-SA-Exim-Connect-IP: 2001:8b0:10b:1:d65d:64ff:fe57:4e05 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-3.0 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH v2 1/5] kvx: Implement setjmp/longjmp/initjmp X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) On Fri, Mar 05, 2021 at 07:33:23PM +0100, Jules Maselbas wrote: > Signed-off-by: Jules Maselbas > --- > changes v1 -> v2: nothing > --- > arch/kvx/Kconfig | 1 + > arch/kvx/include/asm/setjmp.h | 15 +++++++ > arch/kvx/lib/Makefile | 2 +- > arch/kvx/lib/setjmp.S | 85 +++++++++++++++++++++++++++++++++++ > 4 files changed, 102 insertions(+), 1 deletion(-) > create mode 100644 arch/kvx/include/asm/setjmp.h > create mode 100644 arch/kvx/lib/setjmp.S Applied, thanks Sascha > > diff --git a/arch/kvx/Kconfig b/arch/kvx/Kconfig > index 3327021e1..8483ae6e6 100644 > --- a/arch/kvx/Kconfig > +++ b/arch/kvx/Kconfig > @@ -11,6 +11,7 @@ config KVX > select ELF > select FLEXIBLE_BOOTARGS > select GENERIC_FIND_NEXT_BIT > + select HAS_ARCH_SJLJ > select LIBFDT > select MFD_SYSCON > select OF_BAREBOX_DRIVERS > diff --git a/arch/kvx/include/asm/setjmp.h b/arch/kvx/include/asm/setjmp.h > new file mode 100644 > index 000000000..3cfc698d9 > --- /dev/null > +++ b/arch/kvx/include/asm/setjmp.h > @@ -0,0 +1,15 @@ > +/* SPDX-License-Identifier: GPL-2.0-only */ > +/* SPDX-FileCopyrightText: 2021 Jules Maselbas , Kalray Inc. */ > + > +#ifndef _ASM_KVX_SETJMP_H_ > +#define _ASM_KVX_SETJMP_H_ > + > +#include > + > +typedef u64 jmp_buf[22]; > + > +int initjmp(jmp_buf jmp, void __noreturn (*func)(void), void *stack_top); > +int setjmp(jmp_buf jmp) __attribute__((returns_twice)); > +void longjmp(jmp_buf jmp, int ret) __attribute__((noreturn)); > + > +#endif /* _ASM_KVX_SETJMP_H_ */ > diff --git a/arch/kvx/lib/Makefile b/arch/kvx/lib/Makefile > index 6e56462da..cee08b0fa 100644 > --- a/arch/kvx/lib/Makefile > +++ b/arch/kvx/lib/Makefile > @@ -3,4 +3,4 @@ > # Copyright (C) 2019 Kalray Inc. > # > > -obj-y += cpuinfo.o board.o dtb.o poweroff.o bootm.o > +obj-y += cpuinfo.o board.o dtb.o poweroff.o bootm.o setjmp.o > diff --git a/arch/kvx/lib/setjmp.S b/arch/kvx/lib/setjmp.S > new file mode 100644 > index 000000000..829299711 > --- /dev/null > +++ b/arch/kvx/lib/setjmp.S > @@ -0,0 +1,85 @@ > +/* SPDX-License-Identifier: LGPL-2.1 */ > +/* SPDX-FileCopyrightText: 2021 Jules Maselbas , Kalray Inc. */ > + > +#define REG_SIZE 8 > + > +#include > + > +/* jmp_buf layout: > + * [0] = $ra, $sp, $cs, $r14, > + * [4] = $r20, $r21, $r22, $r23, > + * [8] = $r24, $r25, $r26, $r27, > + * [12] = $r28, $r29, $r30, $r31, > + * [16] = $r18, $r19, > + * [18] = $lc, $le, $ls, xxxx > + */ > + > +/** > + * int initjmp(jmp_buf jmp, void __noreturn (*func)(void), void *stack_top); > + */ > +ENTRY(initjmp) > + /* store $ra */ > + sd (0 * REG_SIZE)[$r0] = $r1 > + ;; > + /* store $sp */ > + sd (1 * REG_SIZE)[$r0] = $r2 > + make $r0 = 0 > + ret > + ;; > +ENDPROC(initjmp) > + > +/** > + * int setjmp(jmp_buf jmp); > + */ > +ENTRY(setjmp) > + sq (16 * REG_SIZE)[$r0] = $r18r19 > + get $r40 = $ra > + copyd $r41 = $sp > + ;; > + so (4 * REG_SIZE)[$r0] = $r20r21r22r23 > + get $r42 = $cs > + copyd $r43 = $r14 > + ;; > + so (0 * REG_SIZE)[$r0] = $r40r41r42r43 > + get $r40 = $lc > + ;; > + so (8 * REG_SIZE)[$r0] = $r24r25r26r27 > + get $r41 = $le > + ;; > + so (12 * REG_SIZE)[$r0] = $r28r29r30r31 > + get $r42 = $ls > + ;; > + so (18 * REG_SIZE)[$r0] = $r40r41r42r43 > + make $r0 = 0 > + ret > + ;; > +ENDPROC(setjmp) > + > +/** > + * void longjmp(jmp_buf jmp, int ret); > + */ > +ENTRY(longjmp) > + lo $r40r41r42r43 = (0 * REG_SIZE)[$r0] > + ;; > + lo $r44r45r46r47 = (18 * REG_SIZE)[$r0] > + set $ra = $r40 > + copyd $sp = $r41 > + ;; > + lo $r20r21r22r23 = (4 * REG_SIZE)[$r0] > + set $cs = $r42 > + copyd $r14 = $r43 > + ;; > + lo $r24r25r26r27 = (8 * REG_SIZE)[$r0] > + set $lc = $r44 > + ;; > + lo $r28r29r30r31 = (12 * REG_SIZE)[$r0] > + set $le = $r45 > + ;; > + lq $r18r19 = (16 * REG_SIZE)[$r0] > + set $ls = $r46 > + ;; > + /* According to man, if retval is equal to 0, then we should return 1 */ > + maxud $r0 = $r1, 1 > + ret > + ;; > +ENDPROC(longjmp) > -- > 2.17.1 > > > > _______________________________________________ > barebox mailing list > barebox@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/barebox > > -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox