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/* $OpenBSD: md_init.h,v 1.12 2020/10/15 16:30:23 deraadt 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.
*/
#define MD_SECT_CALL_FUNC(section, func) \
__asm (".section "#section", \"ax\"\n" \
" jsr $26," #func " \n" \
" ldgp $29,0($26) \n" \
" .previous")
#define MD_SECTION_PROLOGUE(sect, entry_pt) \
__asm ( \
".section "#sect",\"ax\",@progbits \n" \
" .globl " #entry_pt " \n" \
" .type " #entry_pt ",@function \n" \
#entry_pt": \n" \
" ldgp $29, 0($27) \n" \
" lda $30, -16($30) \n" \
" stq $26, 0($30) \n" \
" stq $15, 8($30) \n" \
" .align 5 \n" \
" /* fall thru */ \n" \
" .previous")
#define MD_SECTION_EPILOGUE(sect) \
__asm ( \
".section "#sect",\"ax\",@progbits \n" \
" ldq $15, 8($30) \n" \
" ldq $26, 0($30) \n" \
" lda $30, 16($30) \n" \
" ret \n" \
" .previous")
#define MD_CRT0_START \
__asm ( \
" .globl __start \n" \
" .type __start@function \n" \
"__start = ___start")
#define MD_RCRT0_START \
__asm ( \
" .globl __start \n" \
" .type __start@function \n" \
"__start: \n" \
" .set noreorder \n" \
" br $27, L1 \n" \
"L1: \n" \
" ldgp $gp, 0($27) \n" \
" mov $16, $9 \n" \
" br $11, L2 \n" \
"L2: ldiq $12, L2 \n" \
" subq $11, $12, $10 \n" \
" lda $6, _DYNAMIC \n" \
" addq $10, $6, $15 \n" \
" lda $sp, -80($sp) \n" \
" mov $9, $16 \n" \
" lda $11, 0($sp) \n" \
" mov $11, $17 \n" \
" mov $15, $18 \n" \
" lda $27, _dl_boot_bind \n" \
" addq $10, $27, $27 \n" \
" bsr $26, _dl_boot_bind \n" \
" mov $9, $16 \n" \
" mov 0, $17 \n" \
" jsr $26, ___start \n" \
".globl _dl_exit \n" \
".type _dl_exit@function \n" \
"_dl_exit: \n" \
" lda $0, " STR(SYS_exit) " \n" \
" callsys \n" \
" halt ")
#define MD_START_ARGS char **sp, void (*cleanup)(void)
#define MD_START_SETUP \
char **argv, **envp; \
long argc; \
\
argc = *(long *)sp; \
argv = sp + 1; \
envp = sp + 2 + argc; /* 2: argc + NULL ending argv */
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