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/* $OpenBSD: md_init.h,v 1.10 2020/10/19 17:57:40 naddy 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" \
" bl " #func " \n" \
" .previous")
#define MD_SECTION_PROLOGUE(sect, entry_pt) \
__asm ( \
".section "#sect",\"ax\",%progbits \n" \
" .globl " #entry_pt " \n" \
" .type " #entry_pt ",%function \n" \
" .align 4 \n" \
#entry_pt": \n" \
" sub sp, sp, #16 \n" \
" str lr, [sp] \n" \
" /* fall thru */ \n" \
" .previous")
#define MD_SECTION_EPILOGUE(sect) \
__asm ( \
".section "#sect",\"ax\",%progbits \n" \
" ldr lr, [sp] \n" \
" add sp, sp, #16 \n" \
" ret \n" \
" .previous")
#define MD_CRT0_START \
__asm( \
".text \n" \
" .align 0 \n" \
" .globl _start \n" \
" .globl __start \n" \
"_start: \n" \
"__start: \n" \
" mov x3, x2 /* cleanup */ \n" \
"/* Get argc/argv/envp from stack */ \n" \
" ldr x0, [sp] \n" \
" add x1, sp, #0x0008 \n" \
" add x2, x1, x0, lsl #3 \n" \
" add x2, x2, #0x0008 \n" \
" \n" \
" b ___start \n" \
".previous");
#define MD_RCRT0_START \
char **environ, *__progname; \
__asm( \
".text \n" \
" .align 0 \n" \
" .globl _start \n" \
" .globl __start \n" \
"_start: \n" \
"__start: \n" \
" mov fp, sp \n" \
" mov x0, fp \n" \
" \n" \
" sub sp, sp, #8+8+(16*8) \n" \
" add x1, sp, #4 \n" \
" \n" \
" adrp x2, _DYNAMIC \n" \
" add x2, x2, #:lo12:_DYNAMIC \n" \
" \n" \
" bl _dl_boot_bind \n" \
" \n" \
" mov sp, fp \n" \
" mov fp, #0 \n" \
" \n" \
" mov x3, #0 /* cleanup */ \n" \
"/* Get argc/argv/envp from stack */ \n" \
" ldr x0, [sp] \n" \
" add x1, sp, #0x0008 \n" \
" add x2, x1, x0, lsl #3 \n" \
" add x2, x2, #0x0008 \n" \
" \n" \
" b ___start \n" \
" \n" \
"_dl_exit: \n" \
" mov x8, #" STR(SYS_exit) " \n" \
" svc #0 \n" \
" dsb nsh \n" \
" isb \n" \
" udf #0 \n" \
".previous");
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