e83f7ba2c9
. file- and functionality-compatible with previous situation
(FreeBSD csu) (with a crt1.o -> crt0.o symlink in /usr/lib)
. harmonizes source with netbsd
. harmonizes linker invocation (e.g. clang) with netbsd
. helpful to get some arm code in there for the arm port project
78 lines
3 KiB
C
78 lines
3 KiB
C
/* $NetBSD: dot_init.h,v 1.8 2008/05/10 15:31:03 martin Exp $ */
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/*-
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* Copyright (c) 2001 Ross Harvey
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* All rights reserved.
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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 NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
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#include <machine/asm.h>
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#define ASM_SETUP "sp = $30; gp = $29; pv = $27; ra = $26 \n"
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#define MD_SECTION_PROLOGUE(sect, entry_pt) \
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__asm ( \
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ASM_SETUP \
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".section "#sect",\"ax\",@progbits \n"\
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".global "#entry_pt" \n"\
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#entry_pt": \n"\
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" ldgp gp, 0(pv) \n"\
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" lda sp, -32(sp) \n"\
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" stq ra, 0(sp) \n"\
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" stq gp, 8(sp) \n"\
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" .align 5 \n"\
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" /* fall thru */ \n"\
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".previous")
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#define MD_SECTION_EPILOGUE(sect) \
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__asm ( \
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ASM_SETUP \
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".section "#sect",\"ax\",@progbits \n"\
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" ldq gp, 8(sp) \n"\
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" ldq ra, 0(sp) \n"\
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" lda sp, 32(sp) \n"\
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" RET \n"\
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".previous")
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#define MD_INIT_SECTION_PROLOGUE MD_SECTION_PROLOGUE(.init, _init)
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#define MD_FINI_SECTION_PROLOGUE MD_SECTION_PROLOGUE(.fini, _fini)
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#define MD_INIT_SECTION_EPILOGUE MD_SECTION_EPILOGUE(.init)
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#define MD_FINI_SECTION_EPILOGUE MD_SECTION_EPILOGUE(.fini)
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/* We assume we need to reload our GP. */
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#define MD_CALL_STATIC_FUNCTION(section, func) \
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__asm(".section " #section "\n" \
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" br $29, 1f \n" \
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"1: ldgp $29, 0($29) \n" \
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" unop \n" \
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" jsr $26, " #func "\n" \
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" .align 3; .previous");
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