118 lines
3.7 KiB
C
118 lines
3.7 KiB
C
/* $OpenBSD: md_init.h,v 1.12 2023/11/18 16:26:16 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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" bl " #func " \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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" .align 4 \n" \
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#entry_pt": \n" \
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" bti c \n" \
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" sub sp, sp, #16 \n" \
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" str lr, [sp] \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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" ldr lr, [sp] \n" \
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" add sp, sp, #16 \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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".text \n" \
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" .align 0 \n" \
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" .globl _start \n" \
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" .globl __start \n" \
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"_start: \n" \
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"__start: \n" \
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" bti c \n" \
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" mov x3, x2 /* cleanup */ \n" \
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"/* Get argc/argv/envp from stack */ \n" \
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" ldr x0, [sp] \n" \
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" add x1, sp, #0x0008 \n" \
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" add x2, x1, x0, lsl #3 \n" \
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" add x2, x2, #0x0008 \n" \
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" \n" \
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" b ___start \n" \
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".previous");
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#define MD_RCRT0_START \
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char **environ, *__progname; \
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__asm( \
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".text \n" \
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" .align 0 \n" \
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" .globl _start \n" \
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" .globl __start \n" \
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"_start: \n" \
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"__start: \n" \
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" mov fp, sp \n" \
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" mov x0, fp \n" \
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" \n" \
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" sub sp, sp, #8+8+(16*8) \n" \
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" add x1, sp, #4 \n" \
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" \n" \
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" adrp x2, _DYNAMIC \n" \
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" add x2, x2, #:lo12:_DYNAMIC \n" \
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" \n" \
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" bl _dl_boot_bind \n" \
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" \n" \
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" mov sp, fp \n" \
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" mov fp, #0 \n" \
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" \n" \
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" mov x3, #0 /* cleanup */ \n" \
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"/* Get argc/argv/envp from stack */ \n" \
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" ldr x0, [sp] \n" \
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" add x1, sp, #0x0008 \n" \
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" add x2, x1, x0, lsl #3 \n" \
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" add x2, x2, #0x0008 \n" \
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" \n" \
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" b ___start \n" \
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" \n" \
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"_csu_abort: \n" \
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" udf #0 \n" \
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".previous");
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