The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/i386/include/asm.h

Version: -  FREEBSD  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-2  -  FREEBSD-11-1  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-4  -  FREEBSD-10-3  -  FREEBSD-10-2  -  FREEBSD-10-1  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-3  -  FREEBSD-9-2  -  FREEBSD-9-1  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-4  -  FREEBSD-8-3  -  FREEBSD-8-2  -  FREEBSD-8-1  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-4  -  FREEBSD-7-3  -  FREEBSD-7-2  -  FREEBSD-7-1  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-4  -  FREEBSD-6-3  -  FREEBSD-6-2  -  FREEBSD-6-1  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-5  -  FREEBSD-5-4  -  FREEBSD-5-3  -  FREEBSD-5-2  -  FREEBSD-5-1  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  linux-2.6  -  linux-2.4.22  -  MK83  -  MK84  -  PLAN9  -  DFBSD  -  NETBSD  -  NETBSD5  -  NETBSD4  -  NETBSD3  -  NETBSD20  -  OPENBSD  -  xnu-517  -  xnu-792  -  xnu-792.6.70  -  xnu-1228  -  xnu-1456.1.26  -  xnu-1699.24.8  -  xnu-2050.18.24  -  OPENSOLARIS  -  minix-3-1-1 
SearchContext: -  none  -  3  -  10 

    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. All advertising materials mentioning features or use of this software
   17  *    must display the following acknowledgement:
   18  *      This product includes software developed by the University of
   19  *      California, Berkeley and its contributors.
   20  * 4. 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: @(#)DEFS.h        5.1 (Berkeley) 4/23/90
   37  * $FreeBSD: releng/5.1/sys/i386/include/asm.h 103850 2002-09-23 07:27:45Z peter $
   38  */
   39 
   40 #ifndef _MACHINE_ASM_H_
   41 #define _MACHINE_ASM_H_
   42 
   43 #include <sys/cdefs.h>
   44 
   45 #ifdef PIC
   46 #define PIC_PROLOGUE    \
   47         pushl   %ebx;   \
   48         call    1f;     \
   49 1:                      \
   50         popl    %ebx;   \
   51         addl    $_GLOBAL_OFFSET_TABLE_+[.-1b],%ebx
   52 #define PIC_EPILOGUE    \
   53         popl    %ebx
   54 #define PIC_PLT(x)      x@PLT
   55 #define PIC_GOT(x)      x@GOT(%ebx)
   56 #else
   57 #define PIC_PROLOGUE
   58 #define PIC_EPILOGUE
   59 #define PIC_PLT(x)      x
   60 #define PIC_GOT(x)      x
   61 #endif
   62 
   63 /*
   64  * CNAME and HIDENAME manage the relationship between symbol names in C
   65  * and the equivalent assembly language names.  CNAME is given a name as
   66  * it would be used in a C program.  It expands to the equivalent assembly
   67  * language name.  HIDENAME is given an assembly-language name, and expands
   68  * to a possibly-modified form that will be invisible to C programs.
   69  */
   70 #define CNAME(csym)             csym
   71 #define HIDENAME(asmsym)        __CONCAT(.,asmsym)
   72 
   73 /* XXX should use .p2align 4,0x90 for -m486. */
   74 #define _START_ENTRY    .text; .p2align 2,0x90
   75 
   76 #define _ENTRY(x)       _START_ENTRY; \
   77                         .globl CNAME(x); .type CNAME(x),@function; CNAME(x):
   78 
   79 #ifdef PROF
   80 #define ALTENTRY(x)     _ENTRY(x); \
   81                         pushl %ebp; movl %esp,%ebp; \
   82                         call PIC_PLT(HIDENAME(mcount)); \
   83                         popl %ebp; \
   84                         jmp 9f
   85 #define ENTRY(x)        _ENTRY(x); \
   86                         pushl %ebp; movl %esp,%ebp; \
   87                         call PIC_PLT(HIDENAME(mcount)); \
   88                         popl %ebp; \
   89                         9:
   90 #else
   91 #define ALTENTRY(x)     _ENTRY(x)
   92 #define ENTRY(x)        _ENTRY(x)
   93 #endif
   94 
   95 #define RCSID(x)        .text; .asciz x
   96 
   97 #undef __FBSDID
   98 #if !defined(lint) && !defined(STRIP_FBSDID)
   99 #define __FBSDID(s)     .ident s
  100 #else
  101 #define __FBSDID(s)     /* nothing */
  102 #endif /* not lint and not STRIP_FBSDID */
  103 
  104 #ifdef _ARCH_INDIRECT
  105 /*
  106  * Generate code to select between the generic functions and _ARCH_INDIRECT
  107  * specific ones.
  108  * XXX nested __CONCATs don't work with non-ANSI cpp's.
  109  */
  110 #define ANAME(x)        CNAME(__CONCAT(__CONCAT(__,_ARCH_INDIRECT),x))
  111 #define ASELNAME(x)     CNAME(__CONCAT(__arch_select_,x))
  112 #define AVECNAME(x)     CNAME(__CONCAT(__arch_,x))
  113 #define GNAME(x)        CNAME(__CONCAT(__generic_,x))
  114 
  115 /* Don't bother profiling this. */
  116 #ifdef PIC
  117 #define ARCH_DISPATCH(x) \
  118                         _START_ENTRY; \
  119                         .globl CNAME(x); .type CNAME(x),@function; CNAME(x): ; \
  120                         PIC_PROLOGUE; \
  121                         movl PIC_GOT(AVECNAME(x)),%eax; \
  122                         PIC_EPILOGUE; \
  123                         jmpl *(%eax)
  124 
  125 #define ARCH_SELECT(x)  _START_ENTRY; \
  126                         .type ASELNAME(x),@function; \
  127                         ASELNAME(x): \
  128                         PIC_PROLOGUE; \
  129                         call PIC_PLT(CNAME(__get_hw_float)); \
  130                         testl %eax,%eax; \
  131                         movl PIC_GOT(ANAME(x)),%eax; \
  132                         jne 8f; \
  133                         movl PIC_GOT(GNAME(x)),%eax; \
  134                         8: \
  135                         movl PIC_GOT(AVECNAME(x)),%edx; \
  136                         movl %eax,(%edx); \
  137                         PIC_EPILOGUE; \
  138                         jmpl *%eax
  139 #else /* !PIC */
  140 #define ARCH_DISPATCH(x) \
  141                         _START_ENTRY; \
  142                         .globl CNAME(x); .type CNAME(x),@function; CNAME(x): ; \
  143                         jmpl *AVECNAME(x)
  144 
  145 #define ARCH_SELECT(x)  _START_ENTRY; \
  146                         .type ASELNAME(x),@function; \
  147                         ASELNAME(x): \
  148                         call CNAME(__get_hw_float); \
  149                         testl %eax,%eax; \
  150                         movl $ANAME(x),%eax; \
  151                         jne 8f; \
  152                         movl $GNAME(x),%eax; \
  153                         8: \
  154                         movl %eax,AVECNAME(x); \
  155                         jmpl *%eax
  156 #endif /* PIC */
  157 
  158 #define ARCH_VECTOR(x)  .data; .p2align 2; \
  159                         .globl AVECNAME(x); \
  160                         .type AVECNAME(x),@object; \
  161                         .size AVECNAME(x),4; \
  162                         AVECNAME(x): .long ASELNAME(x)
  163 
  164 #undef _ENTRY
  165 #define _ENTRY(x)       ARCH_VECTOR(x); ARCH_SELECT(x); ARCH_DISPATCH(x); \
  166                         _START_ENTRY; \
  167                         .globl ANAME(x); .type ANAME(x),@function; ANAME(x):
  168 
  169 #endif /* _ARCH_INDIRECT */
  170 
  171 #endif /* !_MACHINE_ASM_H_ */

Cache object: fe9435054cc271d31a199a798b66a9d1


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.