From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Wed, 10 Mar 2021 09:50:55 +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 1lJuYQ-0001DZ-WD for lore@lore.pengutronix.de; Wed, 10 Mar 2021 09:50:55 +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 1lJuYP-0002ij-Sn for lore@pengutronix.de; Wed, 10 Mar 2021 09:50:54 +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:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:Cc:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=wZI+XGQiRbDp6sOtx7gJh5w0fk+a1Q/DGnS9tN75GbA=; b=V1nSsloIdY32cCZsSZ5xPtPl6 75zlbLo6AS+NpYKidkXiHn+ocL5l8dssDf45z1lszOOKcBUG9aCTBTrXijsTI+Z/upzM+AG0Pa47s QSV1q3fneYnEzg5XMJeSVJ4dO7sxFvJ1BoP6ReO9mKhpAPyPZUYnlPWfta+KH/Fc8m82ExmMJJAYE oqNw3651GJ/PK7vbcDmtuor665RyPZPRM+30RbqRaqJT/4Wb/p08F80diPMExjKA7eJoU/Tw9I5iJ 0taN3aHzgUhbSC1rgtVxKrZGzIo+OZm/FwwqhnbX0SwFbqYoKbcQB4+on+dsszyQuDA0vsv90cpvd 7QpdaQRaw==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lJuXA-006LrL-Op; Wed, 10 Mar 2021 08:49:37 +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 1lJuVs-006LO6-3M for barebox@lists.infradead.org; Wed, 10 Mar 2021 08:48:17 +0000 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lJuVj-0001Tf-Ih; Wed, 10 Mar 2021 09:48:07 +0100 Received: from afa by dude.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1lJuVd-0001za-KG; Wed, 10 Mar 2021 09:48:01 +0100 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Peter Mamonov , Peter Korsgaard , Sascha Hauer , Ahmad Fatoum Date: Wed, 10 Mar 2021 09:47:54 +0100 Message-Id: <20210310084800.3584-11-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210310084800.3584-1-a.fatoum@pengutronix.de> References: <20210310084800.3584-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210310_084816_328928_F295AFED X-CRM114-Status: GOOD ( 16.15 ) 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=-3.5 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: [PATCH v3 10/16] powerpc: Implement initjmp/setjmp/longjmp 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) From: Sascha Hauer Implementation has been taken from newlib as this is much simpler than the glibc version. Signed-off-by: Sascha Hauer Signed-off-by: Ahmad Fatoum --- arch/powerpc/Kconfig | 1 + arch/powerpc/include/asm/setjmp.h | 21 ++++++++ arch/powerpc/lib/Makefile | 2 +- arch/powerpc/lib/setjmp.S | 86 +++++++++++++++++++++++++++++++ 4 files changed, 109 insertions(+), 1 deletion(-) create mode 100644 arch/powerpc/include/asm/setjmp.h create mode 100644 arch/powerpc/lib/setjmp.S diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 90ec7b1702e9..376c1bf42b5e 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -6,6 +6,7 @@ config PPC select HAS_CACHE select GENERIC_FIND_NEXT_BIT select OFTREE + select HAS_ARCH_SJLJ default y choice diff --git a/arch/powerpc/include/asm/setjmp.h b/arch/powerpc/include/asm/setjmp.h new file mode 100644 index 000000000000..c558415c99d9 --- /dev/null +++ b/arch/powerpc/include/asm/setjmp.h @@ -0,0 +1,21 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH + * (C) Copyright 2016 Alexander Graf + */ + +#ifndef _SETJMP_H_ +#define _SETJMP_H_ 1 + +#include + +typedef struct __jmp_buf_internal_tag { + long int __regs[24]; +} jmp_buf[1]; + +int setjmp(jmp_buf jmp) __attribute__((returns_twice)); +void longjmp(jmp_buf jmp, int ret) __attribute__((noreturn)); + +int initjmp(jmp_buf jmp, void __noreturn (*func)(void), void *stack_top); + +#endif /* _SETJMP_H_ */ diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile index ba2f078b6277..405351c19929 100644 --- a/arch/powerpc/lib/Makefile +++ b/arch/powerpc/lib/Makefile @@ -9,4 +9,4 @@ obj-$(CONFIG_CMD_BOOTM) += ppclinux.o obj-$(CONFIG_MODULES) += module.o obj-y += crtsavres.o obj-y += reloc.o - +obj-y += setjmp.o diff --git a/arch/powerpc/lib/setjmp.S b/arch/powerpc/lib/setjmp.S new file mode 100644 index 000000000000..021a57eebc3c --- /dev/null +++ b/arch/powerpc/lib/setjmp.S @@ -0,0 +1,86 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +/* + * This is a simple version of setjmp and longjmp for the PowerPC. + * Ian Lance Taylor, Cygnus Support, 9 Feb 1994. + */ + +#include +#include + +ENTRY(setjmp) + addi r3,r3,7 # align to 8 byte boundary + rlwinm r3,r3,0,0,28 + stw r1,0(r3) # offset 0 + stwu r2,4(r3) # offset 4 + stwu r13,4(r3) # offset 8 + stwu r14,4(r3) # offset 12 + stwu r15,4(r3) # offset 16 + stwu r16,4(r3) # offset 20 + stwu r17,4(r3) # offset 24 + stwu r18,4(r3) # offset 28 + stwu r19,4(r3) # offset 32 + stwu r20,4(r3) # offset 36 + stwu r21,4(r3) # offset 40 + stwu r22,4(r3) # offset 44 + stwu r23,4(r3) # offset 48 + stwu r24,4(r3) # offset 52 + stwu r25,4(r3) # offset 56 + stwu r26,4(r3) # offset 60 + stwu r27,4(r3) # offset 64 + stwu r28,4(r3) # offset 68 + stwu r29,4(r3) # offset 72 + stwu r30,4(r3) # offset 76 + stwu r31,4(r3) # offset 80 + mflr r4 + stwu r4,4(r3) # offset 84 + mfcr r4 + stwu r4,4(r3) # offset 88 + + li r3,0 + blr +END(setjmp) + +ENTRY(longjmp) + addi r3,r3,7 # align to 8 byte boundary + rlwinm r3,r3,0,0,28 + lwz r1,0(r3) # offset 0 + lwzu r2,4(r3) # offset 4 + lwzu r13,4(r3) # offset 8 + lwzu r14,4(r3) # offset 12 + lwzu r15,4(r3) # offset 16 + lwzu r16,4(r3) # offset 20 + lwzu r17,4(r3) # offset 24 + lwzu r18,4(r3) # offset 28 + lwzu r19,4(r3) # offset 32 + lwzu r20,4(r3) # offset 36 + lwzu r21,4(r3) # offset 40 + lwzu r22,4(r3) # offset 44 + lwzu r23,4(r3) # offset 48 + lwzu r24,4(r3) # offset 52 + lwzu r25,4(r3) # offset 56 + lwzu r26,4(r3) # offset 60 + lwzu r27,4(r3) # offset 64 + lwzu r28,4(r3) # offset 68 + lwzu r29,4(r3) # offset 72 + lwzu r30,4(r3) # offset 76 + lwzu r31,4(r3) # offset 80 + lwzu r5,4(r3) # offset 84 + mtlr r5 + lwzu r5,4(r3) # offset 88 + mtcrf 255,r5 + + mr. r3,r4 + bclr+ 4,2 + li r3,1 + blr +END(longjmp) + +ENTRY(initjmp) + addi r3,r3,7 # align to 8 byte boundary + rlwinm r3,r3,0,0,28 + stw r5,0(r3) # offset 0 + stwu r4,88(r3) # offset 88 + li r3,0 + blr +END(initjmp) -- 2.29.2 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox