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Annotation of researchv9/sys/sun3/psl.h, revision 1.1.1.1

1.1       root        1: /*      @(#)psl.h 1.1 86/02/03 SMI      */
                      2: 
                      3: /*
                      4:  * Copyright (c) 1985 by Sun Microsystems, Inc.
                      5:  */
                      6: 
                      7: /*
                      8:  * Definition of bits in the 68020 status register (SR)
                      9:  * We always use the 68020 interrupt stack because the
                     10:  * pain of fixing up the master stack when returning
                     11:  * off the interrupt stack is too high.
                     12:  */
                     13: #define        SR_T1           0x8000          /* trace on any intruction */
                     14: #define        SR_T0           0x4000          /* trace on change flow */
                     15: #define        SR_SMODE        0x2000          /* system mode */
                     16: #define        SR_MASTER       0x1000          /* master mode (non-interrupt) */
                     17: #define        SR_INTPRI       0x0700          /* interrupt priority bits */
                     18: #define        SR_CC           0x001F          /* all condition code bits */
                     19: 
                     20: /* Handy values for SR */
                     21: #define        SR_HIGH         0x2700          /* supervisor (interrupt) high pri */
                     22: #define        SR_LOW          0x2000          /* supervisor (interrupt) low pri */
                     23: #define        SR_USER         0x0000          /* user, low priority */
                     24: #define        SR_USERCLR      0xFF00          /* system bits */
                     25: #define        SR_TRACE        SR_T1           /* trace mode mask - use T1 (any) */
                     26: 
                     27: 
                     28: #define        PSL_USERSET     SR_USER         /* must set for user */
                     29: #define        PSL_USERCLR     SR_USERCLR      /* must clear for user */
                     30: #define        PSL_ALLCC       SR_CC           /* condition code bits */
                     31: #define        PSL_T           SR_TRACE        /* trace bit */

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