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Annotation of xinu/sys/ovflon.c, revision 1.1.1.1

1.1       root        1: /* ovflon.c -- ovflon */
                      2: 
                      3: #include <kernel.h>
                      4: 
                      5: /*------------------------------------------------------------------------
                      6:  * ovflon -- turn on checking for integer overflow
                      7:  *------------------------------------------------------------------------
                      8:  */
                      9: 
                     10: SYSCALL ovflon()
                     11: {
                     12:        asm ("movpsl    r0");           /* return old psl value, set saved */
                     13:        asm ("bisl2     $0x20, 4(fp)"); /* psl int overflow enable bit (on */
                     14: }                                      /* stack frame). New psl popped by */
                     15:                                        /* ret.                            */

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