From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 01 Mar 2021 12:03:12 +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 1lGgKW-0004WR-0h for lore@lore.pengutronix.de; Mon, 01 Mar 2021 12:03:12 +0100 Received: from merlin.infradead.org ([2001:8b0:10b:1231::1]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lGgKU-0000V1-Re for lore@pengutronix.de; Mon, 01 Mar 2021 12:03:11 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; 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Mon, 01 Mar 2021 12:01:13 +0100 Received: from afa by dude.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1lGgIa-0001bL-EV; Mon, 01 Mar 2021 12:01:12 +0100 From: Ahmad Fatoum To: barebox@lists.infradead.org Date: Mon, 1 Mar 2021 12:01:03 +0100 Message-Id: <20210301110106.3764-9-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210301110106.3764-1-a.fatoum@pengutronix.de> References: <20210301110106.3764-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210301_060122_817980_996E80C6 X-CRM114-Status: GOOD ( 14.99 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jules Maselbas , Stafford Horne , Ahmad Fatoum , sha@pengutronix.de Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" X-SA-Exim-Connect-IP: 2001:8b0:10b:1231::1 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=-3.4 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 v2 08/11] riscv: 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) From: Sascha Hauer Signed-off-by: Sascha Hauer Signed-off-by: Ahmad Fatoum --- arch/riscv/Kconfig | 1 + arch/riscv/include/asm/setjmp.h | 27 +++++++++++++++++++++++++ arch/riscv/lib/Makefile | 2 +- arch/riscv/lib/longjmp.S | 28 ++++++++++++++++++++++++++ arch/riscv/lib/setjmp.S | 35 +++++++++++++++++++++++++++++++++ 5 files changed, 92 insertions(+), 1 deletion(-) create mode 100644 arch/riscv/include/asm/setjmp.h create mode 100644 arch/riscv/lib/longjmp.S create mode 100644 arch/riscv/lib/setjmp.S diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 16c3eecce6f8..107c24a66d3d 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -8,6 +8,7 @@ config RISCV select COMMON_CLK select COMMON_CLK_OF_PROVIDER select CLKDEV_LOOKUP + select HAS_ARCH_SJLJ config ARCH_TEXT_BASE hex diff --git a/arch/riscv/include/asm/setjmp.h b/arch/riscv/include/asm/setjmp.h new file mode 100644 index 000000000000..7516f6825841 --- /dev/null +++ b/arch/riscv/include/asm/setjmp.h @@ -0,0 +1,27 @@ +// 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 + { + /* Program counter. */ + long int __pc; + /* Callee-saved registers. */ + long int __regs[12]; + /* Stack pointer. */ + long int __sp; +} 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/riscv/lib/Makefile b/arch/riscv/lib/Makefile index a1df0b7dc78c..ff5751a812c2 100644 --- a/arch/riscv/lib/Makefile +++ b/arch/riscv/lib/Makefile @@ -1,3 +1,3 @@ extra-y += barebox.lds -obj-y += riscv_timer.o +obj-y += riscv_timer.o setjmp.o longjmp.o diff --git a/arch/riscv/lib/longjmp.S b/arch/riscv/lib/longjmp.S new file mode 100644 index 000000000000..7bcb5b30495d --- /dev/null +++ b/arch/riscv/lib/longjmp.S @@ -0,0 +1,28 @@ +// SPDX-License-Identifier: LGPL-2.1-or-later + +/* longjmp, RISC-V version. */ + +#include +#include + +ENTRY (longjmp) + REG_L ra, 0*SZREG(a0) + REG_L s0, 1*SZREG(a0) + REG_L s1, 2*SZREG(a0) + REG_L s2, 3*SZREG(a0) + REG_L s3, 4*SZREG(a0) + REG_L s4, 5*SZREG(a0) + REG_L s5, 6*SZREG(a0) + REG_L s6, 7*SZREG(a0) + REG_L s7, 8*SZREG(a0) + REG_L s8, 9*SZREG(a0) + REG_L s9, 10*SZREG(a0) + REG_L s10,11*SZREG(a0) + REG_L s11,12*SZREG(a0) + REG_L sp, 13*SZREG(a0) + + seqz a0, a1 + add a0, a0, a1 # a0 = (a1 == 0) ? 1 : a1 + ret + +END (longjmp) diff --git a/arch/riscv/lib/setjmp.S b/arch/riscv/lib/setjmp.S new file mode 100644 index 000000000000..e8ad01635dd3 --- /dev/null +++ b/arch/riscv/lib/setjmp.S @@ -0,0 +1,35 @@ +// SPDX-License-Identifier: LGPL-2.1-or-later + +/* setjmp for RISC-V. */ + +#include +#include + +ENTRY (setjmp) + REG_S ra, 0*SZREG(a0) + REG_S s0, 1*SZREG(a0) + REG_S s1, 2*SZREG(a0) + REG_S s2, 3*SZREG(a0) + REG_S s3, 4*SZREG(a0) + REG_S s4, 5*SZREG(a0) + REG_S s5, 6*SZREG(a0) + REG_S s6, 7*SZREG(a0) + REG_S s7, 8*SZREG(a0) + REG_S s8, 9*SZREG(a0) + REG_S s9, 10*SZREG(a0) + REG_S s10,11*SZREG(a0) + REG_S s11,12*SZREG(a0) + REG_S sp, 13*SZREG(a0) + + li a0, 0 + ret + +END (setjmp) + +ENTRY (initjmp) + REG_S a1, 0*SZREG(a0) + REG_S a2, 13*SZREG(a0) + li a0, 0 + ret + +END (initjmp) -- 2.29.2 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox