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