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
92 lines
3.4 KiB
C
92 lines
3.4 KiB
C
/* $NetBSD: dot_init.h,v 1.7 2008/05/10 15:31:04 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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/*
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* Don't use C versions of _init/_fini, they have become just a
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* rudimentary indirection to the entry points we would supply with
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* MD_SECTION_PROLOGUE.
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*/
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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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#define MD_ASM_IN_SECTION(section, content) \
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__asm( \
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".section " #section ",\"ax\",@progbits\n" \
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content "\n" \
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".previous")
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/*
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* Declare the entry point global.
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*/
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#define MD_SECTION_PROLOGUE(section, entry_pt) \
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MD_ASM_IN_SECTION(section, \
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" .global "_C_LABEL_STRING(#entry_pt)" \n" \
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" .type "_C_LABEL_STRING(#entry_pt)",@function\n" \
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_C_LABEL_STRING(#entry_pt)": \n" \
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" mov.l r14, @-sp \n" \
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" sts.l pr, @-sp \n" \
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" mov sp, r14 \n" \
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" .p2align 2")
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/*
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* NOTE 1: Supply the semicolon here because crtbegin.c doesn't.
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* NOTE 2: We don't use our crtbegin.c for gcc3 and later,
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* we use gcc crtstuff.c via src/gnu/lib/crtstuff*
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*/
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#define MD_CALL_STATIC_FUNCTION(section, func) \
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MD_ASM_IN_SECTION(section, \
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" mov.l 1f, r1 \n" \
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" mova 2f, r0 \n" \
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"0: braf r1 \n" \
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" lds r0, pr \n" \
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\
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" .p2align 2 \n" \
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"1: .long "_C_LABEL_STRING(#func)" - (0b+4) \n" \
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"2: ");
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#define MD_SECTION_EPILOGUE(section) \
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MD_ASM_IN_SECTION(section, \
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" mov r14, sp \n" \
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" lds.l @sp+, pr \n" \
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" rts \n" \
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" mov.l @sp+, r14")
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