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