minix/lib/csu/sh3_elf/dot_init.h
Ben Gras e83f7ba2c9 switch to netbsd csu
. 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
2012-04-12 13:26:24 +02:00

91 lines
3.4 KiB
C

/* $NetBSD: dot_init.h,v 1.7 2008/05/10 15:31:04 martin Exp $ */
/*-
* Copyright (c) 2001 Ross Harvey
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
/*
* Don't use C versions of _init/_fini, they have become just a
* rudimentary indirection to the entry points we would supply with
* MD_SECTION_PROLOGUE.
*/
#define MD_INIT_SECTION_PROLOGUE MD_SECTION_PROLOGUE(.init, _init)
#define MD_FINI_SECTION_PROLOGUE MD_SECTION_PROLOGUE(.fini, _fini)
#define MD_INIT_SECTION_EPILOGUE MD_SECTION_EPILOGUE(.init)
#define MD_FINI_SECTION_EPILOGUE MD_SECTION_EPILOGUE(.fini)
#define MD_ASM_IN_SECTION(section, content) \
__asm( \
".section " #section ",\"ax\",@progbits\n" \
content "\n" \
".previous")
/*
* Declare the entry point global.
*/
#define MD_SECTION_PROLOGUE(section, entry_pt) \
MD_ASM_IN_SECTION(section, \
" .global "_C_LABEL_STRING(#entry_pt)" \n" \
" .type "_C_LABEL_STRING(#entry_pt)",@function\n" \
_C_LABEL_STRING(#entry_pt)": \n" \
" mov.l r14, @-sp \n" \
" sts.l pr, @-sp \n" \
" mov sp, r14 \n" \
" .p2align 2")
/*
* NOTE 1: Supply the semicolon here because crtbegin.c doesn't.
* NOTE 2: We don't use our crtbegin.c for gcc3 and later,
* we use gcc crtstuff.c via src/gnu/lib/crtstuff*
*/
#define MD_CALL_STATIC_FUNCTION(section, func) \
MD_ASM_IN_SECTION(section, \
" mov.l 1f, r1 \n" \
" mova 2f, r0 \n" \
"0: braf r1 \n" \
" lds r0, pr \n" \
\
" .p2align 2 \n" \
"1: .long "_C_LABEL_STRING(#func)" - (0b+4) \n" \
"2: ");
#define MD_SECTION_EPILOGUE(section) \
MD_ASM_IN_SECTION(section, \
" mov r14, sp \n" \
" lds.l @sp+, pr \n" \
" rts \n" \
" mov.l @sp+, r14")