ndk/platforms/android-17/arch-arm/usr/include/machine/asm.h

   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: .fnstart
  74
  75 #define _ASM_SIZE(x)    .size x, .-x;
  76
  77 #define _END(x) \
  78         .fnend; \
  79         _ASM_SIZE(x)
  80
  81 #ifdef GPROF
  82 # ifdef __ELF__
  83 #  define _PROF_PROLOGUE        \
  84         mov ip, lr; bl __mcount
  85 # else
  86 #  define _PROF_PROLOGUE        \
  87         mov ip,lr; bl mcount
  88 # endif
  89 #else
  90 # define _PROF_PROLOGUE
  91 #endif
  92
  93 #define ENTRY(y)        _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE
  94 #define ENTRY_NP(y)     _ENTRY(_C_LABEL(y))
  95 #define END(y)          _END(_C_LABEL(y))
  96 #define ASENTRY(y)      _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE
  97 #define ASENTRY_NP(y)   _ENTRY(_ASM_LABEL(y))
  98 #define ASEND(y)        _END(_ASM_LABEL(y))
  99
 100 #ifdef __ELF__
 101 #define ENTRY_PRIVATE(y)  ENTRY(y); .hidden _C_LABEL(y)
 102 #else
 103 #define ENTRY_PRIVATE(y)  ENTRY(y)
 104 #endif
 105
 106 #define ASMSTR          .asciz
 107
 108 #if defined(__ELF__) && defined(PIC)
 109 #ifdef __STDC__
 110 #define PIC_SYM(x,y)    x ## ( ## y ## )
 111 #else
 112 #define PIC_SYM(x,y)    x/**/(/**/y/**/)
 113 #endif
 114 #else
 115 #define PIC_SYM(x,y)    x
 116 #endif
 117
 118 #ifdef __ELF__
 119 #define RCSID(x)        .section ".ident"; .asciz x
 120 #else
 121 #define RCSID(x)        .text; .asciz x
 122 #endif
 123
 124 #ifdef __ELF__
 125 #define WEAK_ALIAS(alias,sym)                                           \
 126         .weak alias;                                                    \
 127         alias = sym
 128 #endif
 129
 130 #ifdef __STDC__
 131 #define WARN_REFERENCES(sym,msg)                                        \
 132         .stabs msg ## ,30,0,0,0 ;                                       \
 133         .stabs __STRING(_C_LABEL(sym)) ## ,1,0,0,0
 134 #elif defined(__ELF__)
 135 #define WARN_REFERENCES(sym,msg)                                        \
 136         .stabs msg,30,0,0,0 ;                                           \
 137         .stabs __STRING(sym),1,0,0,0
 138 #else
 139 #define WARN_REFERENCES(sym,msg)                                        \
 140         .stabs msg,30,0,0,0 ;                                           \
 141         .stabs __STRING(_/**/sym),1,0,0,0
 142 #endif /* __STDC__ */
 143
 144 #endif /* !_ARM_ASM_H_ */