1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 5 * Copyright (C) 1995, 1996 TooLs GmbH. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by TooLs GmbH. 19 * 4. The name of TooLs GmbH may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 * 33 * $NetBSD: asm.h,v 1.6.18.1 2000/07/25 08:37:14 kleink Exp $ 34 * $FreeBSD$ 35 */ 36 37 #ifndef _MACHINE_ASM_H_ 38 #define _MACHINE_ASM_H_ 39 40 #include <sys/cdefs.h> 41 42 #if defined(PIC) && !defined(__powerpc64__) 43 #define PIC_PROLOGUE XXX 44 #define PIC_EPILOGUE XXX 45 #define PIC_PLT(x) x@plt 46 #ifdef __STDC__ 47 #define PIC_GOT(x) XXX 48 #else /* not __STDC__ */ 49 #define PIC_GOT(x) XXX 50 #endif /* __STDC__ */ 51 #else 52 #define PIC_PROLOGUE 53 #define PIC_EPILOGUE 54 #define PIC_PLT(x) x 55 #define PIC_GOT(x) x 56 #endif 57 58 #define CNAME(csym) csym 59 #define ASMNAME(asmsym) asmsym 60 #ifdef __powerpc64__ 61 #define HIDENAME(asmsym) __CONCAT(_,asmsym) 62 #else 63 #define HIDENAME(asmsym) __CONCAT(.,asmsym) 64 #endif 65 66 #if !defined(_CALL_ELF) || _CALL_ELF == 1 67 #ifdef _KERNEL 68 /* ELFv1 kernel uses global dot symbols */ 69 #define DOT_LABEL(name) __CONCAT(.,name) 70 #define TYPE_ENTRY(name) .size name,24; \ 71 .type DOT_LABEL(name),@function; \ 72 .globl DOT_LABEL(name); 73 #define END_SIZE(name) .size DOT_LABEL(name),.-DOT_LABEL(name); 74 #else /* !_KERNEL */ 75 /* ELFv1 user code uses local function entry points */ 76 #define DOT_LABEL(name) __CONCAT(.L.,name) 77 #define TYPE_ENTRY(name) .type name,@function; 78 #define END_SIZE(name) .size name,.-DOT_LABEL(name); 79 #endif /* _KERNEL */ 80 #else 81 /* ELFv2 doesn't have any of this complication */ 82 #define DOT_LABEL(name) name 83 #define TYPE_ENTRY(name) .type name,@function; 84 #define END_SIZE(name) .size name,.-DOT_LABEL(name); 85 #endif 86 87 #define _GLOBAL(name) \ 88 .data; \ 89 .p2align 2; \ 90 .globl name; \ 91 name: 92 93 #ifdef __powerpc64__ 94 #define TOC_NAME_FOR_REF(name) __CONCAT(.L,name) 95 #define TOC_REF(name) TOC_NAME_FOR_REF(name)@toc 96 #define TOC_ENTRY(name) \ 97 .section ".toc","aw"; \ 98 TOC_NAME_FOR_REF(name): \ 99 .tc name[TC],name 100 #endif 101 102 #ifdef __powerpc64__ 103 104 #if !defined(_CALL_ELF) || _CALL_ELF == 1 105 #define _ENTRY(name) \ 106 .section ".text"; \ 107 .p2align 2; \ 108 .globl name; \ 109 .section ".opd","aw"; \ 110 .p2align 3; \ 111 name: \ 112 .quad DOT_LABEL(name),.TOC.@tocbase,0; \ 113 .previous; \ 114 .p2align 4; \ 115 TYPE_ENTRY(name) \ 116 DOT_LABEL(name): 117 #else 118 #define _ENTRY(name) \ 119 .text; \ 120 .p2align 4; \ 121 .globl name; \ 122 .type name,@function; \ 123 name: \ 124 addis %r2, %r12, (.TOC.-name)@ha; \ 125 addi %r2, %r2, (.TOC.-name)@l; \ 126 .localentry name, .-name; 127 #endif 128 129 #define _END(name) \ 130 .long 0; \ 131 .byte 0,0,0,0,0,0,0,0; \ 132 END_SIZE(name) 133 134 #define LOAD_ADDR(reg, var) \ 135 lis reg, var@highest; \ 136 ori reg, reg, var@higher; \ 137 rldicr reg, reg, 32, 31; \ 138 oris reg, reg, var@h; \ 139 ori reg, reg, var@l; 140 #else /* !__powerpc64__ */ 141 #define _ENTRY(name) \ 142 .text; \ 143 .p2align 4; \ 144 .globl name; \ 145 .type name,@function; \ 146 name: 147 #define _END(name) 148 149 #define LOAD_ADDR(reg, var) \ 150 lis reg, var@ha; \ 151 ori reg, reg, var@l; 152 #endif /* __powerpc64__ */ 153 154 #if defined(PROF) || (defined(_KERNEL) && defined(GPROF)) 155 # ifdef __powerpc64__ 156 # define _PROF_PROLOGUE mflr 0; \ 157 std 3,48(1); \ 158 std 4,56(1); \ 159 std 5,64(1); \ 160 std 0,16(1); \ 161 stdu 1,-112(1); \ 162 bl _mcount; \ 163 nop; \ 164 ld 0,112+16(1); \ 165 ld 3,112+48(1); \ 166 ld 4,112+56(1); \ 167 ld 5,112+64(1); \ 168 mtlr 0; \ 169 addi 1,1,112 170 # else 171 # define _PROF_PROLOGUE mflr 0; stw 0,4(1); bl _mcount 172 # endif 173 #else 174 # define _PROF_PROLOGUE 175 #endif 176 177 #define ASENTRY(y) _ENTRY(ASMNAME(y)); _PROF_PROLOGUE 178 #define END(y) _END(CNAME(y)) 179 #define ENTRY(y) _ENTRY(CNAME(y)); _PROF_PROLOGUE 180 #define GLOBAL(y) _GLOBAL(CNAME(y)) 181 182 #define ASENTRY_NOPROF(y) _ENTRY(ASMNAME(y)) 183 #define ENTRY_NOPROF(y) _ENTRY(CNAME(y)) 184 185 #define ASMSTR .asciz 186 187 #define RCSID(x) .text; .asciz x 188 189 #undef __FBSDID 190 #if !defined(lint) && !defined(STRIP_FBSDID) 191 #define __FBSDID(s) .ident s 192 #else 193 #define __FBSDID(s) /* nothing */ 194 #endif /* not lint and not STRIP_FBSDID */ 195 196 #define WEAK_REFERENCE(sym, alias) \ 197 .weak alias; \ 198 .equ alias,sym 199 200 #ifdef __STDC__ 201 #define WARN_REFERENCES(_sym,_msg) \ 202 .section .gnu.warning. ## _sym ; .ascii _msg ; .text 203 #else 204 #define WARN_REFERENCES(_sym,_msg) \ 205 .section .gnu.warning./**/_sym ; .ascii _msg ; .text 206 #endif /* __STDC__ */ 207 208 #endif /* !_MACHINE_ASM_H_ */ 209