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Annotation of Net2/arch/i386/boot/asm.h, revision 1.1

1.1     ! root        1: /* 
        !             2:  * Ported to Boot 386BSD by Julian Elsicher ([email protected]) Sept. 1992
        !             3:  *
        !             4:  * Mach Operating System
        !             5:  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
        !             6:  * All Rights Reserved.
        !             7:  * 
        !             8:  * Permission to use, copy, modify and distribute this software and its
        !             9:  * documentation is hereby granted, provided that both the copyright
        !            10:  * notice and this permission notice appear in all copies of the
        !            11:  * software, derivative works or modified versions, and any portions
        !            12:  * thereof, and that both notices appear in supporting documentation.
        !            13:  * 
        !            14:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            15:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
        !            16:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            17:  * 
        !            18:  * Carnegie Mellon requests users of this software to return to
        !            19:  * 
        !            20:  *  Software Distribution Coordinator  or  [email protected]
        !            21:  *  School of Computer Science
        !            22:  *  Carnegie Mellon University
        !            23:  *  Pittsburgh PA 15213-3890
        !            24:  * 
        !            25:  * any improvements or extensions that they make and grant Carnegie Mellon
        !            26:  * the rights to redistribute these changes.
        !            27:  */
        !            28: /* 
        !            29:  * HISTORY
        !            30:  * $Log: asm.h,v $
        !            31:  * Revision 1.1  1993/03/21 18:08:18  cgd
        !            32:  * after 0.2.2 "stable" patches applied
        !            33:  *
        !            34:  * Revision 2.7  92/02/29  15:33:41  rpd
        !            35:  *     Added ENTRY2.
        !            36:  *     [92/02/28            rpd]
        !            37:  * 
        !            38:  * Revision 2.6  92/02/19  15:07:52  elf
        !            39:  *     Changed #if __STDC__ to #ifdef __STDC__
        !            40:  *     [92/01/16            jvh]
        !            41:  * 
        !            42:  * Revision 2.5  91/05/14  16:02:45  mrt
        !            43:  *     Correcting copyright
        !            44:  * 
        !            45:  * Revision 2.4  91/02/05  17:10:42  mrt
        !            46:  *     Changed to new Mach copyright
        !            47:  *     [91/02/01  17:30:29  mrt]
        !            48:  * 
        !            49:  * Revision 2.3  90/12/20  16:35:27  jeffreyh
        !            50:  *     changes for __STDC__
        !            51:  *     [90/12/06            jeffreyh]
        !            52:  * 
        !            53:  * Revision 2.2  90/05/03  15:24:12  dbg
        !            54:  *     First checkin.
        !            55:  * 
        !            56:  *
        !            57:  *     Typo on ENTRY if gprof
        !            58:  *     [90/03/29            rvb]
        !            59:  * 
        !            60:  *     fix SVC for "ifdef wheeze" [kupfer]
        !            61:  *     Fix the GPROF definitions.
        !            62:  *     ENTRY(x) gets profiled iffdef GPROF.
        !            63:  *     Entry(x) (and DATA(x)) is NEVER profiled.
        !            64:  *     MCOUNT can be used by asm that intends to build a frame,
        !            65:  *     after the frame is built.
        !            66:  *     [90/02/26            rvb]
        !            67:  *
        !            68:  *     Add #define addr16 .byte 0x67
        !            69:  *     [90/02/09            rvb]
        !            70:  *     Added LBi, SVC and ENTRY
        !            71:  *     [89/11/10  09:51:33  rvb]
        !            72:  * 
        !            73:  *     New a.out and coff compatible .s files.
        !            74:  *     [89/10/16            rvb]
        !            75:  */
        !            76: 
        !            77: 
        !            78: #define S_ARG0  4(%esp)
        !            79: #define S_ARG1  8(%esp)
        !            80: #define S_ARG2 12(%esp)
        !            81: #define S_ARG3 16(%esp)
        !            82: 
        !            83: #define FRAME  pushl %ebp; movl %esp, %ebp
        !            84: #define EMARF  leave
        !            85: 
        !            86: #define B_ARG0  8(%ebp)
        !            87: #define B_ARG1 12(%ebp)
        !            88: #define B_ARG2 16(%ebp)
        !            89: #define B_ARG3 20(%ebp)
        !            90: 
        !            91: #ifdef wheeze
        !            92: 
        !            93: #define ALIGN 4
        !            94: #define EXT(x) x
        !            95: #define LEXT(x) x:
        !            96: #define LCL(x) ./**/x
        !            97: 
        !            98: #define LB(x,n) ./**/x
        !            99: #define LBb(x,n) ./**/x
        !           100: #define LBf(x,n) ./**/x
        !           101: 
        !           102: #define        SVC lcall $7,$0
        !           103: 
        !           104: #define String .string
        !           105: #define Value  .value
        !           106: #define Times(a,b) [a\*b]
        !           107: #define Divide(a,b) [a\\b]
        !           108: 
        !           109: #define INB    inb     (%dx)
        !           110: #define OUTB   outb    (%dx)
        !           111: #define INL    inl     (%dx)
        !           112: #define OUTL   outl    (%dx)
        !           113: 
        !           114: #else  wheeze
        !           115: #define ALIGN 
        !           116: #define        LCL(x)  x
        !           117: 
        !           118: #define LB(x,n) n
        !           119: #ifdef __STDC__
        !           120: #define EXT(x) _ ## x
        !           121: #define LEXT(x) _ ## x ## :
        !           122: 
        !           123: #define LBb(x,n) n ## b
        !           124: #define LBf(x,n) n ## f
        !           125: #else __STDC__
        !           126: #define EXT(x) _/**/x
        !           127: #define LEXT(x) _/**/x/**/:
        !           128: #define LBb(x,n) n/**/b
        !           129: #define LBf(x,n) n/**/f
        !           130: #endif __STDC__
        !           131: #define SVC .byte 0x9a; .long 0; .word 0x7
        !           132: 
        !           133: #define String .ascii
        !           134: #define Value  .word
        !           135: #define Times(a,b) (a*b)
        !           136: #define Divide(a,b) (a/b)
        !           137: 
        !           138: #define INB    inb     %dx, %al
        !           139: #define OUTB   outb    %al, %dx
        !           140: #define INL    inl     %dx, %eax
        !           141: #define OUTL   outl    %eax, %dx
        !           142: 
        !           143: #endif wheeze
        !           144: 
        !           145: #define data32 .byte 0x66
        !           146: #define data16 .byte 0x66
        !           147: #define addr16 .byte 0x67
        !           148: 
        !           149: 
        !           150: 
        !           151: #ifdef GPROF
        !           152: #ifdef __STDC__
        !           153: 
        !           154: #define MCOUNT         .data; LB(x, 9); .long 0; .text; lea LBb(x, 9),%edx; call mcount
        !           155: #define        ENTRY(x)        .globl EXT(x); .align ALIGN; LEXT(x) ; \
        !           156:                        pushl %ebp; movl %esp, %ebp; MCOUNT; popl %ebp;
        !           157: #define        ENTRY2(x,y)     .globl EXT(x); .globl EXT(y); \
        !           158:                        .align ALIGN; LEXT(x) LEXT(y) ; \
        !           159:                        pushl %ebp; movl %esp, %ebp; MCOUNT; popl %ebp;
        !           160: #define        ASENTRY(x)      .globl x; .align ALIGN; x ## : ; \
        !           161:                        pushl %ebp; movl %esp, %ebp; MCOUNT; popl %ebp;
        !           162: 
        !           163: #else   __STDC__
        !           164: 
        !           165: #define MCOUNT         .data; LB(x, 9): .long 0; .text; lea LBb(x, 9),%edx; call mcount
        !           166: #define        ENTRY(x)        .globl EXT(x); .align ALIGN; LEXT(x) ; \
        !           167:                        pushl %ebp; movl %esp, %ebp; MCOUNT; popl %ebp;
        !           168: #define        ENTRY2(x,y)     .globl EXT(x); .globl EXT(y); \
        !           169:                        .align ALIGN; LEXT(x) LEXT(y)
        !           170: #define        ASENTRY(x)      .globl x; .align ALIGN; x: ; \
        !           171:                        pushl %ebp; movl %esp, %ebp; MCOUNT; popl %ebp;
        !           172: 
        !           173: #endif __STDC__
        !           174: #else  GPROF
        !           175: #ifdef __STDC__
        !           176: 
        !           177: #define MCOUNT
        !           178: #define        ENTRY(x)        .globl EXT(x); .align ALIGN; LEXT(x)
        !           179: #define        ENTRY2(x,y)     .globl EXT(x); .globl EXT(y); \
        !           180:                        .align ALIGN; LEXT(x) LEXT(y)
        !           181: #define        ASENTRY(x)      .globl x; .align ALIGN; x ## :
        !           182: 
        !           183: #else  __STDC__
        !           184: 
        !           185: #define MCOUNT
        !           186: #define        ENTRY(x)        .globl EXT(x); .align ALIGN; LEXT(x)
        !           187: #define        ENTRY2(x,y)     .globl EXT(x); .globl EXT(y); \
        !           188:                        .align ALIGN; LEXT(x) LEXT(y)
        !           189: #define        ASENTRY(x)      .globl x; .align ALIGN; x:
        !           190: 
        !           191: #endif __STDC__
        !           192: #endif GPROF
        !           193: 
        !           194: #define        Entry(x)        .globl EXT(x); .align ALIGN; LEXT(x)
        !           195: #define        DATA(x)         .globl EXT(x); .align ALIGN; LEXT(x)

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