From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Wed, 10 Mar 2021 09:50:34 +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 1lJuY6-0001CV-JH for lore@lore.pengutronix.de; Wed, 10 Mar 2021 09:50:34 +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 1lJuY3-0002Y8-9J for lore@pengutronix.de; Wed, 10 Mar 2021 09:50:34 +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=Id7FM4vJPluDZWTA3kxPkiirr6+1ruQmHoZAy4Ls+fE=; b=oRc2K2XFU5QgjEeG+YrDsxBy3 cwP9+Gql7ZJG6365z+lUAE3f2dEZLewUCussBX99du/NZuJaTQ7dCJp6WxM0qkYMoE8YhIyIcwZCR 2FZYGLA5dvfG/nKTwBBZ9P6qH9hjY54jc49H05PFlKdRsh2YfE6fwaabfbCr0verzhcJiRfTIDrvH 8jopTNt2X2tAprWH9idDvhkS9s5cH7nfQPfbiIUd1a3qR2ID7KV+dV9syWlV7roYNJSUzNsOP4af2 2Pdpl8LZAPC/w/Qwj+BRCrKS7nbDgNxpLtuB/W+CJ6mqHRLs+M0G4PgvL6tVeGwwdEZPn2dzOHBaL dMQQVnBlQ==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lJuWu-006LkG-QW; Wed, 10 Mar 2021 08:49:22 +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 1lJuVn-006LMh-LB for barebox@lists.infradead.org; Wed, 10 Mar 2021 08:48:13 +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 1lJuVf-0001Te-2o; Wed, 10 Mar 2021 09:48:03 +0100 Received: from afa by dude.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1lJuVd-0001zX-Jj; 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 09:47:53 +0100 Message-Id: <20210310084800.3584-10-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_084812_017718_18C64474 X-CRM114-Status: GOOD ( 15.54 ) 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 09/16] mips: Implement setjmp/longjmp/initjmp for 32BIT 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 The header has been taken from glibc, the implementation itself is based on the newlib implementation. Signed-off-by: Sascha Hauer Signed-off-by: Ahmad Fatoum --- arch/mips/Kconfig | 1 + arch/mips/include/asm/setjmp.h | 32 ++++++++++++++++++++++ arch/mips/lib/Makefile | 1 + arch/mips/lib/setjmp.S | 50 ++++++++++++++++++++++++++++++++++ 4 files changed, 84 insertions(+) create mode 100644 arch/mips/include/asm/setjmp.h create mode 100644 arch/mips/lib/setjmp.S diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 48f97c4bbf30..7774abe94827 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -303,6 +303,7 @@ choice config 32BIT bool "32-bit barebox" depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL + select HAS_ARCH_SJLJ help Select this option if you want to build a 32-bit barebox. diff --git a/arch/mips/include/asm/setjmp.h b/arch/mips/include/asm/setjmp.h new file mode 100644 index 000000000000..5a9af7773a5f --- /dev/null +++ b/arch/mips/include/asm/setjmp.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +/* + * Define the machine-dependent type `jmp_buf'. MIPS version. + * Copyright (C) 1992-2021 Free Software Foundation, Inc. + * This file is part of the GNU C Library. + */ + +#ifndef _MIPS_BITS_SETJMP_H +#define _MIPS_BITS_SETJMP_H 1 + +#include + +typedef struct __jmp_buf_internal_tag { + /* Program counter. */ + void *__pc; + + /* Stack pointer. */ + void *__sp; + + /* Callee-saved registers s0 through s7. */ + int __regs[8]; + + /* The frame pointer. */ + void *__fp; +} 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 /* _MIPS_BITS_SETJMP_H */ diff --git a/arch/mips/lib/Makefile b/arch/mips/lib/Makefile index 0761588ae865..88a2bdbd282b 100644 --- a/arch/mips/lib/Makefile +++ b/arch/mips/lib/Makefile @@ -8,6 +8,7 @@ obj-y += reloc.o obj-y += sections.o obj-y += shutdown.o obj-y += dma-default.o +obj-$(CONFIG_HAS_ARCH_SJLJ) += setjmp.o obj-$(CONFIG_MIPS_OPTIMIZED_STRING_FUNCTIONS) += memcpy.o obj-$(CONFIG_MIPS_OPTIMIZED_STRING_FUNCTIONS) += memset.o diff --git a/arch/mips/lib/setjmp.S b/arch/mips/lib/setjmp.S new file mode 100644 index 000000000000..b09a7c55293c --- /dev/null +++ b/arch/mips/lib/setjmp.S @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include +#include +#include + +/* int setjmp (jmp_buf); */ +LEAF(setjmp) + sw ra, (0 * 4)(a0) + sw sp, (1 * 4)(a0) + sw s0, (2 * 4)(a0) + sw s1, (3 * 4)(a0) + sw s2, (4 * 4)(a0) + sw s3, (5 * 4)(a0) + sw s4, (6 * 4)(a0) + sw s5, (7 * 4)(a0) + sw s6, (8 * 4)(a0) + sw s7, (9 * 4)(a0) + sw fp, (10 * 4)(a0) + move v0, zero + j ra +END(setjmp) + +/* volatile void longjmp (jmp_buf, int); */ +LEAF(longjmp) + lw ra, (0 * 4)(a0) + lw sp, (1 * 4)(a0) + lw s0, (2 * 4)(a0) + lw s1, (3 * 4)(a0) + lw s2, (4 * 4)(a0) + lw s3, (5 * 4)(a0) + lw s4, (6 * 4)(a0) + lw s5, (7 * 4)(a0) + lw s6, (8 * 4)(a0) + lw s7, (9 * 4)(a0) + lw fp, (10 * 4)(a0) + bne a1, zero, 1f + li a1, 1 +1: + move v0, a1 + j ra +END(longjmp) + +/* int initjmp(jmp_buf jmp, void __noreturn (*func)(void), void *stack_top); */ +LEAF(initjmp) + sw a1, (0 * 4)(a0) + sw a2, (1 * 4)(a0) + move v0, zero + j ra +END(initjmp) -- 2.29.2 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox