1 /* $OpenBSD: md_init.h,v 1.3 2014/12/22 13:53:01 kettenis Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 Ross Harvey 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the NetBSD 18 * Foundation, Inc. and its contributors. 19 * 4. Neither the name of The NetBSD Foundation nor the names of its 20 * contributors may be used to endorse or promote products derived 21 * from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #define MD_SECT_CALL_FUNC(section, func) \ 37 __asm (".section "#section", \"ax\" \n" \ 38 " call " #func ", 0 \n" \ 39 " nop \n" \ 40 " .previous") 41 42 #define MD_SECTION_PROLOGUE(sect, entry_pt) \ 43 __asm ( \ 44 ".section "#sect",\"ax\",@progbits \n" \ 45 " .globl " #entry_pt " \n" \ 46 " .type " #entry_pt ",@function \n" \ 47 #entry_pt": \n" \ 48 " save %sp, -192, %sp \n" \ 49 " .align 4 \n" \ 50 " /* fall thru */ \n" \ 51 " .previous") 52 53 54 #define MD_SECTION_EPILOGUE(sect) \ 55 __asm ( \ 56 ".section "#sect",\"ax\",@progbits \n" \ 57 " ret \n" \ 58 " restore \n" \ 59 " .previous") 60 61 62 #define MD_CRT0_START \ 63 __asm__( \ 64 ".text \n" \ 65 " .align 4 \n" \ 66 " .global _start \n" \ 67 " .global __start \n" \ 68 "_start: \n" \ 69 "__start: \n" \ 70 " clr %fp \n" \ 71 " add %sp, 2175, %o0 /* stack */\n" \ 72 " ba,pt %icc, ___start \n" \ 73 " mov %g1, %o1 \n" \ 74 " .previous") 75 76 77 #define MD_RCRT0_START \ 78 __asm__( \ 79 ".text \n" \ 80 " .align 4 \n" \ 81 " .global _start \n" \ 82 " .global __start \n" \ 83 "_start: \n" \ 84 "__start: \n" \ 85 " clr %fp \n" \ 86 " sub %sp, 48 + 16*8, %sp \n" \ 87 " add %sp, 2223, %l3 \n" \ 88 " add %l3, 16*8, %o0 \n" \ 89 " mov %o0, %l0 \n" \ 90 " call 0f \n" \ 91 " nop \n" \ 92 " call _DYNAMIC+8 \n" \ 93 "0: ld [%o7+8], %o2 \n" \ 94 " sll %o2, 2, %o2 \n" \ 95 " sra %o2, 0, %o2 \n" \ 96 " add %o2, %o7, %o2 \n" \ 97 " call _dl_boot_bind \n" \ 98 " mov %l3, %o1 \n" \ 99 " add %sp, 48 + 16*8, %sp \n" \ 100 " add %sp, 2175, %o0 /* stack */\n" \ 101 " ba,pt %icc, ___start \n" \ 102 " clr %o1 \n" \ 103 " \n" \ 104 " .global _dl_printf \n" \ 105 "_dl_printf: \n" \ 106 " retl \n" \ 107 " nop \n" \ 108 " \n" \ 109 " .global _dl_exit \n" \ 110 "_dl_exit: \n" \ 111 " mov 0x401, %g1 \n" \ 112 " add %o7, 8, %g2 \n" \ 113 " t 0 \n" \ 114 " retl \n" \ 115 " sub %g0, %o0, %o0 \n" \ 116 " .previous") 117 118 119 #define MD_START_ARGS char **sp, void (*cleanup)(void) 120 #define MD_START_SETUP \ 121 char **argv, **envp; \ 122 long argc; \ 123 \ 124 argc = *(long *)sp; \ 125 argv = sp + 1; \ 126 environ = envp = sp + 2 + argc; /* 2: argc + NULL ending argv */ 127