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Annotation of researchv9/cmd/sun/pcc/sky.h, revision 1.1

1.1     ! root        1: /*     @(#)sky.h 1.1 86/02/03 SMI      */
        !             2: 
        !             3: /*
        !             4:  * Copyright (c) 1985 by Sun Microsystems, Inc.
        !             5:  */
        !             6: 
        !             7: /*
        !             8:  * as include file for interfacing the sky ffp board
        !             9:  *             21 June, 1983   rt
        !            10:  */
        !            11: 
        !            12: /*  shape of the ffp register data structure: */
        !            13: struct sky {
        !            14:        unsigned short  sky_command;
        !            15:        unsigned short  sky_status;
        !            16:        union{
        !            17:            short sword[2];
        !            18:            long  slong;
        !            19:        }s;
        !            20: #define        sky_data        s.slong
        !            21: #define sky_d1reg      s.sword[0]
        !            22:        long    sky_ucode;
        !            23: };
        !            24: 
        !            25: /*
        !            26:  *
        !            27:  * some commands:
        !            28:  *
        !            29:  */
        !            30: /* control commands: */
        !            31: #define        S_INIT          0x1000
        !            32: #define        S_SAVE          0x1040
        !            33: #define        S_REST          0x1041
        !            34: #define        S_NOP           0x1063
        !            35: /* state-free conversions: b <- f(a) */
        !            36: #define        S_ITOS          0x1024
        !            37: #define        S_ITOD          0x1044
        !            38: #define        S_STOD          0x1042
        !            39: #define        S_DTOS          0x1043
        !            40: #define        S_DTOI          0x1045
        !            41: #define        S_STOI          0x1027
        !            42: /* state-free single-precision arithmetic: b <- f(a1,a2) */
        !            43: #define        S_SADD3         0x1001
        !            44: #define        S_SSUB3         0x1007
        !            45: #define        S_SMUL3         0x100B
        !            46: #define        S_SDIV3         0x1013
        !            47: #define S_SPVT3                0x1017  /* b <- a3 + a1*a2 */
        !            48: /* state-dependent single-precision arithmetic: b <- f(r0,a1) */
        !            49: #define        S_SADD2         0x1003  /* S_SADD3+2 */
        !            50: #define        S_SSUB2         0x1009  /*   &c.     */
        !            51: #define        S_SMUL2         0x100D
        !            52: #define        S_SDIV2         0x1015
        !            53: /* state-free double-precision arithmetic: b <- f(a1,a2) */
        !            54: #define        S_DADD3         0x1002  /* S_SADD3+1 */
        !            55: #define        S_DSUB3         0x1008  /*   &c.     */
        !            56: #define        S_DMUL3         0x100C
        !            57: #define        S_DDIV3         0x1014
        !            58: #define S_DPVT3                0x1018  /* b <- a3 + a1*a2 */
        !            59: /* state-dependent double-precision arithmetic: b <- f(r0,a1) */
        !            60: #define        S_DADD2         0x1004  /* S_DADD3+2 or S_SADD2+1 or S_SADD3+3 */
        !            61: #define        S_DSUB2         0x100A  /*                &c.                  */
        !            62: #define        S_DMUL2         0x100E
        !            63: #define        S_DDIV2         0x1016
        !            64: /* state-free comparisons: b <- a1 vs. a2 */
        !            65: #define        S_SCMP3         0x105D
        !            66: #define        S_DCMP3         0x105E
        !            67: /* state-dependent comparisons: b <- r0 vs. a1 */
        !            68: #define        S_SCMP2         0x105F  /* S_SCMP3+2 */
        !            69: #define        S_DCMP2         0x1060  /* S_DCMP3+2 */
        !            70: /* random data movement        */
        !            71: #define        S_LDS           0x1031
        !            72: #define        S_LDD           0x1034

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