asm.h revision 1.15.34.1
1 1.15.34.1 yamt /* $NetBSD: asm.h,v 1.15.34.1 2006/02/01 14:51:37 yamt Exp $ */ 2 1.3 deraadt 3 1.1 pk /* 4 1.1 pk * Copyright (c) 1994 Allen Briggs 5 1.1 pk * All rights reserved. 6 1.1 pk * 7 1.1 pk * Gleaned from locore.s and sun3 asm.h which had the following copyrights: 8 1.1 pk * locore.s: 9 1.1 pk * Copyright (c) 1988 University of Utah. 10 1.1 pk * Copyright (c) 1982, 1990 The Regents of the University of California. 11 1.1 pk * sun3/include/asm.h: 12 1.1 pk * Copyright (c) 1993 Adam Glass 13 1.1 pk * Copyright (c) 1990 The Regents of the University of California. 14 1.1 pk * 15 1.1 pk * Redistribution and use in source and binary forms, with or without 16 1.1 pk * modification, are permitted provided that the following conditions 17 1.1 pk * are met: 18 1.1 pk * 1. Redistributions of source code must retain the above copyright 19 1.1 pk * notice, this list of conditions and the following disclaimer. 20 1.1 pk * 2. Redistributions in binary form must reproduce the above copyright 21 1.1 pk * notice, this list of conditions and the following disclaimer in the 22 1.1 pk * documentation and/or other materials provided with the distribution. 23 1.1 pk * 3. All advertising materials mentioning features or use of this software 24 1.1 pk * must display the following acknowledgement: 25 1.1 pk * This product includes software developed by the University of 26 1.1 pk * California, Berkeley and its contributors. 27 1.1 pk * 4. Neither the name of the University nor the names of its contributors 28 1.1 pk * may be used to endorse or promote products derived from this software 29 1.1 pk * without specific prior written permission. 30 1.1 pk * 31 1.1 pk * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 32 1.1 pk * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 33 1.1 pk * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 34 1.1 pk * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 35 1.1 pk * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 1.1 pk * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 1.1 pk * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 1.1 pk * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 39 1.1 pk * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 40 1.1 pk * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 41 1.1 pk * SUCH DAMAGE. 42 1.1 pk */ 43 1.1 pk 44 1.1 pk #ifndef _ASM_H_ 45 1.1 pk #define _ASM_H_ 46 1.1 pk 47 1.14 mrg /* Pull in CCFSZ, CC64FSZ, and BIAS from frame.h */ 48 1.14 mrg #ifndef _LOCORE 49 1.14 mrg #define _LOCORE 50 1.14 mrg #endif 51 1.14 mrg #include <machine/frame.h> 52 1.14 mrg 53 1.6 tv #ifdef __ELF__ 54 1.6 tv #define _C_LABEL(name) name 55 1.6 tv #else 56 1.1 pk #ifdef __STDC__ 57 1.1 pk #define _C_LABEL(name) _ ## name 58 1.1 pk #else 59 1.1 pk #define _C_LABEL(name) _/**/name 60 1.6 tv #endif 61 1.1 pk #endif 62 1.1 pk #define _ASM_LABEL(name) name 63 1.1 pk 64 1.1 pk #ifdef PIC 65 1.1 pk /* 66 1.1 pk * PIC_PROLOGUE() is akin to the compiler generated function prologue for 67 1.1 pk * PIC code. It leaves the address of the Global Offset Table in DEST, 68 1.14 mrg * clobbering register TMP in the process. 69 1.14 mrg * 70 1.14 mrg * We can use two code sequences. We can read the %pc or use the call 71 1.14 mrg * instruction that saves the pc in %o7. Call requires the branch unit and 72 1.14 mrg * IEU1, and clobbers %o7 which needs to be restored. This instruction 73 1.14 mrg * sequence takes about 4 cycles due to instruction interdependence. Reading 74 1.14 mrg * the pc takes 4 cycles to dispatch and is always dispatched alone. That 75 1.14 mrg * sequence takes 7 cycles. 76 1.1 pk */ 77 1.14 mrg #ifdef __arch64__ 78 1.14 mrg #define PIC_PROLOGUE(dest,tmp) \ 79 1.14 mrg mov %o7, tmp; \ 80 1.14 mrg sethi %hi(_GLOBAL_OFFSET_TABLE_-4),dest; \ 81 1.14 mrg call 0f; \ 82 1.14 mrg or dest,%lo(_GLOBAL_OFFSET_TABLE_+4),dest; \ 83 1.14 mrg 0: \ 84 1.14 mrg add dest,%o7,dest; \ 85 1.14 mrg mov tmp, %o7 86 1.14 mrg #else 87 1.1 pk #define PIC_PROLOGUE(dest,tmp) \ 88 1.1 pk mov %o7,tmp; 3: call 4f; nop; 4: \ 89 1.7 tv sethi %hi(_C_LABEL(_GLOBAL_OFFSET_TABLE_)-(3b-.)),dest; \ 90 1.7 tv or dest,%lo(_C_LABEL(_GLOBAL_OFFSET_TABLE_)-(3b-.)),dest; \ 91 1.1 pk add dest,%o7,dest; mov tmp,%o7 92 1.14 mrg #endif 93 1.1 pk 94 1.1 pk /* 95 1.1 pk * PICCY_SET() does the equivalent of a `set var, %dest' instruction in 96 1.1 pk * a PIC-like way, but without involving the Global Offset Table. This 97 1.1 pk * only works for VARs defined in the same file *and* in the text segment. 98 1.1 pk */ 99 1.14 mrg #ifdef __arch64__ 100 1.14 mrg #define PICCY_SET(var,dest,tmp) \ 101 1.14 mrg 3: rd %pc, tmp; add tmp,(var-3b),dest 102 1.14 mrg #else 103 1.1 pk #define PICCY_SET(var,dest,tmp) \ 104 1.1 pk mov %o7,tmp; 3: call 4f; nop; 4: \ 105 1.1 pk add %o7,(var-3b),dest; mov tmp,%o7 106 1.14 mrg #endif 107 1.1 pk #else 108 1.1 pk #define PIC_PROLOGUE(dest,tmp) 109 1.1 pk #define PICCY_OFFSET(var,dest,tmp) 110 1.1 pk #endif 111 1.1 pk 112 1.1 pk #define FTYPE(x) .type x,@function 113 1.1 pk #define OTYPE(x) .type x,@object 114 1.1 pk 115 1.1 pk #define _ENTRY(name) \ 116 1.1 pk .align 4; .globl name; .proc 1; FTYPE(name); name: 117 1.1 pk 118 1.4 jtc #ifdef GPROF 119 1.12 thorpej /* see _MCOUNT_ENTRY in profile.h */ 120 1.12 thorpej #ifdef __ELF__ 121 1.14 mrg #ifdef __arch64__ 122 1.14 mrg #define _PROF_PROLOGUE \ 123 1.14 mrg .data; .align 8; 1: .uaword 0; .uaword 0; \ 124 1.14 mrg .text; save %sp,-CC64FSZ,%sp; sethi %hi(1b),%o0; call _mcount; \ 125 1.14 mrg or %o0,%lo(1b),%o0; restore 126 1.14 mrg #else 127 1.2 pk #define _PROF_PROLOGUE \ 128 1.1 pk .data; .align 4; 1: .long 0; \ 129 1.12 thorpej .text; save %sp,-96,%sp; sethi %hi(1b),%o0; call _mcount; \ 130 1.12 thorpej or %o0,%lo(1b),%o0; restore 131 1.14 mrg #endif 132 1.14 mrg #else 133 1.14 mrg #ifdef __arch64__ 134 1.14 mrg #define _PROF_PROLOGUE \ 135 1.14 mrg .data; .align 8; 1: .uaword 0; .uaword 0; \ 136 1.14 mrg .text; save %sp,-CC64FSZ,%sp; sethi %hi(1b),%o0; call mcount; \ 137 1.14 mrg or %o0,%lo(1b),%o0; restore 138 1.12 thorpej #else 139 1.12 thorpej #define _PROF_PROLOGUE \ 140 1.12 thorpej .data; .align 4; 1: .long 0; \ 141 1.1 pk .text; save %sp,-96,%sp; sethi %hi(1b),%o0; call mcount; \ 142 1.1 pk or %o0,%lo(1b),%o0; restore 143 1.12 thorpej #endif 144 1.14 mrg #endif 145 1.1 pk #else 146 1.2 pk #define _PROF_PROLOGUE 147 1.1 pk #endif 148 1.1 pk 149 1.2 pk #define ENTRY(name) _ENTRY(_C_LABEL(name)); _PROF_PROLOGUE 150 1.13 thorpej #define ENTRY_NOPROFILE(name) _ENTRY(_C_LABEL(name)) 151 1.2 pk #define ASENTRY(name) _ENTRY(_ASM_LABEL(name)); _PROF_PROLOGUE 152 1.1 pk #define FUNC(name) ASENTRY(name) 153 1.10 chs #define RODATA(name) .align 4; .text; .globl _C_LABEL(name); \ 154 1.10 chs OTYPE(_C_LABEL(name)); _C_LABEL(name): 155 1.1 pk 156 1.1 pk 157 1.1 pk #define ASMSTR .asciz 158 1.5 christos 159 1.15 uwe #ifdef __ELF__ 160 1.15 uwe #define RCSID(name) .pushsection ".ident"; .asciz name; .popsection 161 1.15 uwe #else 162 1.5 christos #define RCSID(name) .asciz name 163 1.15 uwe #endif 164 1.15 uwe 165 1.15 uwe #ifdef NO_KERNEL_RCSIDS 166 1.15 uwe #define __KERNEL_RCSID(_n, _s) /* nothing */ 167 1.15 uwe #else 168 1.15 uwe #define __KERNEL_RCSID(_n, _s) RCSID(_s) 169 1.15 uwe #endif 170 1.11 kleink 171 1.11 kleink #ifdef __ELF__ 172 1.11 kleink #define WEAK_ALIAS(alias,sym) \ 173 1.11 kleink .weak alias; \ 174 1.11 kleink alias = sym 175 1.11 kleink #endif 176 1.15.34.1 yamt /* 177 1.15.34.1 yamt * STRONG_ALIAS: create a strong alias. 178 1.15.34.1 yamt */ 179 1.15.34.1 yamt #define STRONG_ALIAS(alias,sym) \ 180 1.15.34.1 yamt .globl alias; \ 181 1.15.34.1 yamt alias = sym 182 1.8 thorpej 183 1.14 mrg /* 184 1.14 mrg * WARN_REFERENCES: create a warning if the specified symbol is referenced. 185 1.14 mrg */ 186 1.14 mrg #ifdef __ELF__ 187 1.14 mrg #ifdef __STDC__ 188 1.14 mrg #define WARN_REFERENCES(_sym,_msg) \ 189 1.14 mrg .section .gnu.warning. ## _sym ; .ascii _msg ; .text 190 1.14 mrg #else 191 1.14 mrg #define WARN_REFERENCES(_sym,_msg) \ 192 1.14 mrg .section .gnu.warning./**/_sym ; .ascii _msg ; .text 193 1.14 mrg #endif /* __STDC__ */ 194 1.14 mrg #else 195 1.8 thorpej #ifdef __STDC__ 196 1.9 thorpej #define __STRING(x) #x 197 1.8 thorpej #define WARN_REFERENCES(sym,msg) \ 198 1.9 thorpej .stabs msg ## ,30,0,0,0 ; \ 199 1.9 thorpej .stabs __STRING(_ ## sym) ## ,1,0,0,0 200 1.8 thorpej #else 201 1.9 thorpej #define __STRING(x) "x" 202 1.8 thorpej #define WARN_REFERENCES(sym,msg) \ 203 1.8 thorpej .stabs msg,30,0,0,0 ; \ 204 1.9 thorpej .stabs __STRING(_/**/sym),1,0,0,0 205 1.8 thorpej #endif /* __STDC__ */ 206 1.14 mrg #endif /* __ELF__ */ 207 1.1 pk 208 1.1 pk #endif /* _ASM_H_ */ 209
Indexes created Wed Oct 01 18:09:54 GMT 2025