Copy _setjmp.S from libc in preparation for loader-specific version.
This commit is contained in:
Daniel C. Sobral
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bc64b31886
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64b0ea0c05
@ -1,4 +1,4 @@
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# $Id: Makefile,v 1.10 1998/11/04 07:39:53 msmith Exp $
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# $Id: Makefile,v 1.11 1998/11/04 12:49:31 peter Exp $
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#
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# Originally from $NetBSD: Makefile,v 1.21 1997/10/26 22:08:38 lukem Exp $
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#
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@ -91,7 +91,7 @@ __reml.S: ${.CURDIR}/../libc/alpha/gen/divrem.m4
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SRCS+= inet_ntoa.c inet_addr.c
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# _setjmp/_longjmp
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.PATH: ${.CURDIR}/../libc/${MACHINE_ARCH}/gen
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.PATH: ${.CURDIR}/${MACHINE_ARCH}
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SRCS+= _setjmp.S
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# really only required for i386
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CFLAGS+=-I${.CURDIR}/../libc/${MACHINE_ARCH}
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123
lib/libstand/alpha/_setjmp.S
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123
lib/libstand/alpha/_setjmp.S
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@ -0,0 +1,123 @@
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/* $NetBSD: _setjmp.S,v 1.2 1996/10/17 03:08:03 cgd Exp $ */
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/*
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* Copyright (c) 1994, 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#include <machine/asm.h>
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/*
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* C library -- _setjmp, _longjmp
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*
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* _longjmp(a,v)
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* will generate a "return(v)" from
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* the last call to
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* _setjmp(a)
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* by restoring registers from the stack,
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* The previous signal state is NOT restored.
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*/
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.set noreorder
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LEAF(_setjmp, 1)
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LDGP(pv)
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stq ra, (2 * 8)(a0) /* sc_pc = return address */
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stq s0, (( 9 + 4) * 8)(a0) /* saved bits of sc_regs */
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stq s1, ((10 + 4) * 8)(a0)
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stq s2, ((11 + 4) * 8)(a0)
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stq s3, ((12 + 4) * 8)(a0)
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stq s4, ((13 + 4) * 8)(a0)
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stq s5, ((14 + 4) * 8)(a0)
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stq s6, ((15 + 4) * 8)(a0)
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stq ra, ((26 + 4) * 8)(a0)
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stq sp, ((30 + 4) * 8)(a0)
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ldiq t0, 0xacedbadd /* sigcontext magic number */
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stq t0, ((31 + 4) * 8)(a0) /* magic in sc_regs[31] */
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/* Too bad we can't check if we actually used FP */
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ldiq t0, 1
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stq t0, (36 * 8)(a0) /* say we've used FP. */
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stt fs0, ((2 + 37) * 8)(a0) /* saved bits of sc_fpregs */
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stt fs1, ((3 + 37) * 8)(a0)
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stt fs2, ((4 + 37) * 8)(a0)
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stt fs3, ((5 + 37) * 8)(a0)
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stt fs4, ((6 + 37) * 8)(a0)
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stt fs5, ((7 + 37) * 8)(a0)
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stt fs6, ((8 + 37) * 8)(a0)
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stt fs7, ((9 + 37) * 8)(a0)
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mf_fpcr ft0 /* get FP control reg */
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stt ft0, (69 * 8)(a0) /* and store it in sc_fpcr */
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stq zero, (70 * 8)(a0) /* FP software control XXX */
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stq zero, (71 * 8)(a0) /* sc_reserved[0] */
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stq zero, (72 * 8)(a0) /* sc_reserved[1] */
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stq zero, (73 * 8)(a0) /* sc_xxx[0] */
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stq zero, (74 * 8)(a0) /* sc_xxx[1] */
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stq zero, (75 * 8)(a0) /* sc_xxx[2] */
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stq zero, (76 * 8)(a0) /* sc_xxx[3] */
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stq zero, (77 * 8)(a0) /* sc_xxx[4] */
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stq zero, (78 * 8)(a0) /* sc_xxx[5] */
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stq zero, (79 * 8)(a0) /* sc_xxx[6] */
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stq zero, (80 * 8)(a0) /* sc_xxx[7] */
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mov zero, v0 /* return zero */
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RET
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END(_setjmp)
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LEAF(_longjmp, 2)
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LDGP(pv)
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ldq t0, ((31 + 4) * 8)(a0) /* magic in sc_regs[31] */
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ldiq t1, 0xacedbadd
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cmpeq t0, t1, t0
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beq t0, botch /* If the magic was bad, punt */
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ldq ra, (2 * 8)(a0) /* sc_pc = return address */
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ldq s0, (( 9 + 4) * 8)(a0) /* saved bits of sc_regs */
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ldq s1, ((10 + 4) * 8)(a0)
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ldq s2, ((11 + 4) * 8)(a0)
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ldq s3, ((12 + 4) * 8)(a0)
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ldq s4, ((13 + 4) * 8)(a0)
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ldq s5, ((14 + 4) * 8)(a0)
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ldq s6, ((15 + 4) * 8)(a0)
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/* ldq ra, ((26 + 4) * 8)(a0) set above */
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ldq sp, ((30 + 4) * 8)(a0)
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ldt fs0, ((2 + 37) * 8)(a0) /* saved bits of sc_fpregs */
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ldt fs1, ((3 + 37) * 8)(a0)
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ldt fs2, ((4 + 37) * 8)(a0)
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ldt fs3, ((5 + 37) * 8)(a0)
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ldt fs4, ((6 + 37) * 8)(a0)
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ldt fs5, ((7 + 37) * 8)(a0)
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ldt fs6, ((8 + 37) * 8)(a0)
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ldt fs7, ((9 + 37) * 8)(a0)
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ldt ft0, (69 * 8)(a0) /* get sc_fpcr */
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mt_fpcr ft0 /* and restore it. */
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mov a1, v0 /* return second arg */
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RET
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botch:
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CALL(longjmperror)
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CALL(abort)
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RET /* "can't" get here... */
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END(_longjmp)
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84
lib/libstand/i386/_setjmp.S
Normal file
84
lib/libstand/i386/_setjmp.S
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@ -0,0 +1,84 @@
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/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: _setjmp.S,v 1.7 1998/04/29 09:14:35 jb Exp $
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*/
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#if defined(LIBC_RCS) && !defined(lint)
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.text
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.asciz "$Id: _setjmp.S,v 1.7 1998/04/29 09:14:35 jb Exp $"
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#endif /* LIBC_RCS and not lint */
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/*
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* C library -- _setjmp, _longjmp
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*
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* _longjmp(a,v)
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* will generate a "return(v)" from the last call to
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* _setjmp(a)
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* by restoring registers from the environment 'a'.
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* The previous signal state is NOT restored.
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*/
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#include "DEFS.h"
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ENTRY(_setjmp)
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movl 4(%esp),%eax
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movl 0(%esp),%edx
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movl %edx, 0(%eax) /* rta */
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movl %ebx, 4(%eax)
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movl %esp, 8(%eax)
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movl %ebp,12(%eax)
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movl %esi,16(%eax)
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movl %edi,20(%eax)
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fnstcw 28(%eax)
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xorl %eax,%eax
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ret
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ENTRY(_longjmp)
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movl 4(%esp),%edx
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movl 8(%esp),%eax
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movl 0(%edx),%ecx
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movl 4(%edx),%ebx
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movl 8(%edx),%esp
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movl 12(%edx),%ebp
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movl 16(%edx),%esi
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movl 20(%edx),%edi
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fninit
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fldcw 28(%edx)
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testl %eax,%eax
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jnz 1f
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incl %eax
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1: movl %ecx,0(%esp)
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ret
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