asm.h revision 1.10.18.1
1 1.10.18.1 kleink /* $NetBSD: asm.h,v 1.10.18.1 2000/07/25 08:38:21 kleink 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 1.6 tv #ifdef __ELF__ 48 1.6 tv #define _C_LABEL(name) name 49 1.6 tv #else 50 1.1 pk #ifdef __STDC__ 51 1.1 pk #define _C_LABEL(name) _ ## name 52 1.1 pk #else 53 1.1 pk #define _C_LABEL(name) _/**/name 54 1.6 tv #endif 55 1.1 pk #endif 56 1.1 pk #define _ASM_LABEL(name) name 57 1.1 pk 58 1.1 pk #ifdef PIC 59 1.1 pk /* 60 1.1 pk * PIC_PROLOGUE() is akin to the compiler generated function prologue for 61 1.1 pk * PIC code. It leaves the address of the Global Offset Table in DEST, 62 1.1 pk * clobbering register TMP in the process. Using the temporary enables us 63 1.1 pk * to work without a stack frame (doing so requires saving %o7) . 64 1.1 pk */ 65 1.1 pk #define PIC_PROLOGUE(dest,tmp) \ 66 1.1 pk mov %o7,tmp; 3: call 4f; nop; 4: \ 67 1.7 tv sethi %hi(_C_LABEL(_GLOBAL_OFFSET_TABLE_)-(3b-.)),dest; \ 68 1.7 tv or dest,%lo(_C_LABEL(_GLOBAL_OFFSET_TABLE_)-(3b-.)),dest; \ 69 1.1 pk add dest,%o7,dest; mov tmp,%o7 70 1.1 pk 71 1.1 pk /* 72 1.1 pk * PICCY_SET() does the equivalent of a `set var, %dest' instruction in 73 1.1 pk * a PIC-like way, but without involving the Global Offset Table. This 74 1.1 pk * only works for VARs defined in the same file *and* in the text segment. 75 1.1 pk */ 76 1.1 pk #define PICCY_SET(var,dest,tmp) \ 77 1.1 pk mov %o7,tmp; 3: call 4f; nop; 4: \ 78 1.1 pk add %o7,(var-3b),dest; mov tmp,%o7 79 1.1 pk #else 80 1.1 pk #define PIC_PROLOGUE(dest,tmp) 81 1.1 pk #define PICCY_OFFSET(var,dest,tmp) 82 1.1 pk #endif 83 1.1 pk 84 1.1 pk #define FTYPE(x) .type x,@function 85 1.1 pk #define OTYPE(x) .type x,@object 86 1.1 pk 87 1.1 pk #define _ENTRY(name) \ 88 1.1 pk .align 4; .globl name; .proc 1; FTYPE(name); name: 89 1.1 pk 90 1.4 jtc #ifdef GPROF 91 1.2 pk #define _PROF_PROLOGUE \ 92 1.1 pk .data; .align 4; 1: .long 0; \ 93 1.1 pk .text; save %sp,-96,%sp; sethi %hi(1b),%o0; call mcount; \ 94 1.1 pk or %o0,%lo(1b),%o0; restore 95 1.1 pk #else 96 1.2 pk #define _PROF_PROLOGUE 97 1.1 pk #endif 98 1.1 pk 99 1.2 pk #define ENTRY(name) _ENTRY(_C_LABEL(name)); _PROF_PROLOGUE 100 1.2 pk #define ASENTRY(name) _ENTRY(_ASM_LABEL(name)); _PROF_PROLOGUE 101 1.1 pk #define FUNC(name) ASENTRY(name) 102 1.10 chs #define RODATA(name) .align 4; .text; .globl _C_LABEL(name); \ 103 1.10 chs OTYPE(_C_LABEL(name)); _C_LABEL(name): 104 1.1 pk 105 1.1 pk 106 1.1 pk #define ASMSTR .asciz 107 1.5 christos 108 1.5 christos #define RCSID(name) .asciz name 109 1.10.18.1 kleink 110 1.10.18.1 kleink #ifdef __ELF__ 111 1.10.18.1 kleink #define WEAK_ALIAS(alias,sym) \ 112 1.10.18.1 kleink .weak alias; \ 113 1.10.18.1 kleink alias = sym 114 1.10.18.1 kleink #endif 115 1.8 thorpej 116 1.8 thorpej #ifdef __STDC__ 117 1.9 thorpej #define __STRING(x) #x 118 1.8 thorpej #define WARN_REFERENCES(sym,msg) \ 119 1.9 thorpej .stabs msg ## ,30,0,0,0 ; \ 120 1.9 thorpej .stabs __STRING(_ ## sym) ## ,1,0,0,0 121 1.8 thorpej #else 122 1.9 thorpej #define __STRING(x) "x" 123 1.8 thorpej #define WARN_REFERENCES(sym,msg) \ 124 1.8 thorpej .stabs msg,30,0,0,0 ; \ 125 1.9 thorpej .stabs __STRING(_/**/sym),1,0,0,0 126 1.8 thorpej #endif /* __STDC__ */ 127 1.1 pk 128 1.1 pk #endif /* _ASM_H_ */ 129
Indexes created Wed Oct 01 18:09:54 GMT 2025