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  1. /*-
  2.  * Copyright (c) 1990 The Regents of the University of California.
  3.  * All rights reserved.
  4.  *
  5.  * This code is derived from software contributed to Berkeley by
  6.  * William Jolitz.
  7.  *
  8.  * Redistribution and use in source and binary forms, with or without
  9.  * modification, are permitted provided that the following conditions
  10.  * are met:
  11.  * 1. Redistributions of source code must retain the above copyright
  12.  *    notice, this list of conditions and the following disclaimer.
  13.  * 2. Redistributions in binary form must reproduce the above copyright
  14.  *    notice, this list of conditions and the following disclaimer in the
  15.  *    documentation and/or other materials provided with the distribution.
  16.  * 3. Neither the name of the University nor the names of its contributors
  17.  *    may be used to endorse or promote products derived from this software
  18.  *    without specific prior written permission.
  19.  *
  20.  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21.  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22.  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23.  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24.  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25.  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26.  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27.  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28.  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29.  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30.  * SUCH DAMAGE.
  31.  *
  32.  *      @(#)asm.h       5.5 (Berkeley) 5/7/91
  33.  */
  34.  
  35. #ifndef _I386_ASM_H_
  36. #define _I386_ASM_H_
  37.  
  38. #define _C_LABEL(x)   _ ## x
  39. #define _ASM_LABEL(x)   x
  40.  
  41. /* allow overriding entrypoint alignment */
  42. #if !defined(_ALIGN_TEXT)
  43. # define _ALIGN_TEXT .align  16
  44. #endif
  45.  
  46. #define _ENTRY(x) \
  47.         .text; _ALIGN_TEXT; .globl x; x:
  48.  
  49. #define _LABEL(x) \
  50.         .globl x; x:
  51.  
  52. #define ENTRY(y)        _ENTRY(_C_LABEL(y))
  53. #define NENTRY(y)       _ENTRY(_C_LABEL(y))
  54. #define ASENTRY(y)      _ENTRY(_ASM_LABEL(y))
  55. #define LABEL(y)        _LABEL(_C_LABEL(y))
  56. #define END(y)          .size y, . - y
  57.  
  58. #define IMPORT(sym)               \
  59.         .extern _C_LABEL(sym)
  60.  
  61. #endif /* !_I386_ASM_H_ */
  62.