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Annotation of 43BSDTahoe/lib/libc/compat-4.1/compat-4.1.tahoe/reset.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  */
        !             6: #ifdef LIBC_SCCS
        !             7: _sccsid:.asciz "@(#)reset.c    1.2 (Berkeley/CCI) 8/1/86"
        !             8: #endif LIBC_SCCS
        !             9: 
        !            10: /*
        !            11:  * C library -- reset, setexit
        !            12:  *
        !            13:  *     reset(x)
        !            14:  * will generate a "return" from
        !            15:  * the last call to
        !            16:  *     setexit()
        !            17:  * by restoring r2 - r12, fp
        !            18:  * and doing a return.
        !            19:  * The returned value is x; on the original
        !            20:  * call the returned value is 0.
        !            21:  *
        !            22:  * useful for going back to the main loop
        !            23:  * after a horrible error in a lowlevel
        !            24:  * routine.
        !            25:  */
        !            26: #include "DEFS.h"
        !            27: 
        !            28: ENTRY(setexit, 0)
        !            29:        movab   setsav,r0
        !            30:        storer  $0x1ffc, (r0)
        !            31:        movl    (fp),44(r0)             # fp
        !            32:        moval   4(fp),48(r0)            # sp
        !            33:        movl    -8(fp),52(r0)           # pc
        !            34:        clrl    r0
        !            35:        ret
        !            36: 
        !            37: ENTRY(reset, 0)
        !            38:        movl    4(fp),r0        # returned value
        !            39:        movab   setsav,r1
        !            40:        loadr   $0x1ffc,(r1)
        !            41:        movl    44(r1),fp
        !            42:        movl    48(r1),sp
        !            43:        jmp     *52(r1)
        !            44: 
        !            45:        .data
        !            46: setsav:        .space  14*4

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