Annotation of funnyos/libkern/asm.h, Revision 1.1
1.1 ! init 1: /* $Id: asm.h,v 1.1.1.1 2007/10/12 08:40:43 init Exp $ */
! 2: /* $OpenBSD: asm.h,v 1.1 2004/02/01 05:09:49 drahn Exp $ */
! 3: /* $NetBSD: asm.h,v 1.4 2001/07/16 05:43:32 matt Exp $ */
! 4:
! 5: /*
! 6: * Copyright (c) 1990 The Regents of the University of California.
! 7: * All rights reserved.
! 8: *
! 9: * This code is derived from software contributed to Berkeley by
! 10: * William Jolitz.
! 11: *
! 12: * Redistribution and use in source and binary forms, with or without
! 13: * modification, are permitted provided that the following conditions
! 14: * are met:
! 15: * 1. Redistributions of source code must retain the above copyright
! 16: * notice, this list of conditions and the following disclaimer.
! 17: * 2. Redistributions in binary form must reproduce the above copyright
! 18: * notice, this list of conditions and the following disclaimer in the
! 19: * documentation and/or other materials provided with the distribution.
! 20: * 3. Neither the name of the University nor the names of its contributors
! 21: * may be used to endorse or promote products derived from this software
! 22: * without specific prior written permission.
! 23: *
! 24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 34: * SUCH DAMAGE.
! 35: *
! 36: * from: @(#)asm.h 5.5 (Berkeley) 5/7/91
! 37: */
! 38:
! 39: #ifndef _ARM32_ASM_H_
! 40: #define _ARM32_ASM_H_
! 41:
! 42: #ifdef __ELF__
! 43: # define _C_LABEL(x) x
! 44: #else
! 45: # ifdef __STDC__
! 46: # define _C_LABEL(x) _ ## x
! 47: # else
! 48: # define _C_LABEL(x) _/**/x
! 49: # endif
! 50: #endif
! 51: #define _ASM_LABEL(x) x
! 52:
! 53: #ifdef __STDC__
! 54: # define __CONCAT(x,y) x ## y
! 55: # define __STRING(x) #x
! 56: #else
! 57: # define __CONCAT(x,y) x/**/y
! 58: # define __STRING(x) "x"
! 59: #endif
! 60:
! 61: #ifndef _ALIGN_TEXT
! 62: # define _ALIGN_TEXT .align 0
! 63: #endif
! 64:
! 65: /*
! 66: * gas/arm uses @ as a single comment character and thus cannot be used here
! 67: * Instead it recognised the # instead of an @ symbols in .type directives
! 68: * We define a couple of macros so that assembly code will not be dependant
! 69: * on one or the other.
! 70: */
! 71: #define _ASM_TYPE_FUNCTION #function
! 72: #define _ASM_TYPE_OBJECT #object
! 73: #define _ENTRY(x) \
! 74: .text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; x:
! 75:
! 76: #ifdef GPROF
! 77: # ifdef __ELF__
! 78: # define _PROF_PROLOGUE \
! 79: mov ip, lr; bl __mcount
! 80: # else
! 81: # define _PROF_PROLOGUE \
! 82: mov ip,lr; bl mcount
! 83: # endif
! 84: #else
! 85: # define _PROF_PROLOGUE
! 86: #endif
! 87:
! 88: #define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE
! 89: #define ENTRY_NP(y) _ENTRY(_C_LABEL(y))
! 90: #define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE
! 91: #define ASENTRY_NP(y) _ENTRY(_ASM_LABEL(y))
! 92:
! 93: #define ASMSTR .asciz
! 94:
! 95: #if defined(__ELF__) && defined(PIC)
! 96: #ifdef __STDC__
! 97: #define PIC_SYM(x,y) x ## ( ## y ## )
! 98: #else
! 99: #define PIC_SYM(x,y) x/**/(/**/y/**/)
! 100: #endif
! 101: #else
! 102: #define PIC_SYM(x,y) x
! 103: #endif
! 104:
! 105: #ifdef __ELF__
! 106: #define RCSID(x) .section ".ident"; .asciz x
! 107: #else
! 108: #define RCSID(x) .text; .asciz x
! 109: #endif
! 110:
! 111: #ifdef __ELF__
! 112: #define WEAK_ALIAS(alias,sym) \
! 113: .weak alias; \
! 114: alias = sym
! 115: #endif
! 116:
! 117: #ifdef __STDC__
! 118: #define WARN_REFERENCES(sym,msg) \
! 119: .stabs msg ## ,30,0,0,0 ; \
! 120: .stabs __STRING(_C_LABEL(sym)) ## ,1,0,0,0
! 121: #elif defined(__ELF__)
! 122: #define WARN_REFERENCES(sym,msg) \
! 123: .stabs msg,30,0,0,0 ; \
! 124: .stabs __STRING(sym),1,0,0,0
! 125: #else
! 126: #define WARN_REFERENCES(sym,msg) \
! 127: .stabs msg,30,0,0,0 ; \
! 128: .stabs __STRING(_/**/sym),1,0,0,0
! 129: #endif /* __STDC__ */
! 130:
! 131: #endif /* !_ARM_ASM_H_ */
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