sys/arch/sparc/include/trap.h

   1 /*      $NetBSD: trap.h,v 1.12.2.4 2005/11/10 13:58:56 skrll Exp $ */
   2
   3 /*
   4  * Copyright (c) 1992, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This software was developed by the Computer Systems Engineering group
   8  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
   9  * contributed to Berkeley.
  10  *
  11  * All advertising materials mentioning features or use of this software
  12  * must display the following acknowledgement:
  13  *      This product includes software developed by the University of
  14  *      California, Lawrence Berkeley Laboratory.
  15  *
  16  * Redistribution and use in source and binary forms, with or without
  17  * modification, are permitted provided that the following conditions
  18  * are met:
  19  * 1. Redistributions of source code must retain the above copyright
  20  *    notice, this list of conditions and the following disclaimer.
  21  * 2. Redistributions in binary form must reproduce the above copyright
  22  *    notice, this list of conditions and the following disclaimer in the
  23  *    documentation and/or other materials provided with the distribution.
  24  * 3. Neither the name of the University nor the names of its contributors
  25  *    may be used to endorse or promote products derived from this software
  26  *    without specific prior written permission.
  27  *
  28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  38  * SUCH DAMAGE.
  39  *
  40  *      @(#)trap.h      8.1 (Berkeley) 6/11/93
  41  */
  42 /*
  43  * Sun4m support by Aaron Brown, Harvard University.
  44  * Changes Copyright (c) 1995 The President and Fellows of Harvard College.
  45  * All rights reserved.
  46  */
  47
  48 #ifndef _MACHINE_TRAP_H
  49 #define _MACHINE_TRAP_H
  50
  51 /*      trap            vec       (pri) description     */
  52 #define T_RESET         0x00    /* (1) not actually vectored; jumps to 0 */
  53 #define T_TEXTFAULT     0x01    /* (2) address fault during instr fetch */
  54 #define T_ILLINST       0x02    /* (3) illegal instruction */
  55 #define T_PRIVINST      0x03    /* (4) privileged instruction */
  56 #define T_FPDISABLED    0x04    /* (5) fp instr while fp disabled */
  57 #define T_WINOF         0x05    /* (6) register window overflow */
  58 #define T_WINUF         0x06    /* (7) register window underflow */
  59 #define T_ALIGN         0x07    /* (8) address not properly aligned */
  60 #define T_FPE           0x08    /* (9) floating point exception */
  61 #define T_DATAFAULT     0x09    /* (10) address fault during data fetch */
  62 #define T_TAGOF         0x0a    /* (11) tag overflow */
  63 /*                      0x0b       unused */
  64 /*                      0x0c       unused */
  65 /*                      0x0d       unused */
  66 /*                      0x0e       unused */
  67 /*                      0x0f       unused */
  68 /*                      0x10       unused */
  69 #define T_L1INT         0x11    /* (27) level 1 interrupt */
  70 #define T_L2INT         0x12    /* (26) level 2 interrupt */
  71 #define T_L3INT         0x13    /* (25) level 3 interrupt */
  72 #define T_L4INT         0x14    /* (24) level 4 interrupt */
  73 #define T_L5INT         0x15    /* (23) level 5 interrupt */
  74 #define T_L6INT         0x16    /* (22) level 6 interrupt */
  75 #define T_L7INT         0x17    /* (21) level 7 interrupt */
  76 #define T_L8INT         0x18    /* (20) level 8 interrupt */
  77 #define T_L9INT         0x19    /* (19) level 9 interrupt */
  78 #define T_L10INT        0x1a    /* (18) level 10 interrupt */
  79 #define T_L11INT        0x1b    /* (17) level 11 interrupt */
  80 #define T_L12INT        0x1c    /* (16) level 12 interrupt */
  81 #define T_L13INT        0x1d    /* (15) level 13 interrupt */
  82 #define T_L14INT        0x1e    /* (14) level 14 interrupt */
  83 #define T_L15INT        0x1f    /* (13) level 15 interrupt */
  84 /*                      0x20       unused */
  85 #define T_TEXTERROR     0x21    /* (3) address fault during instr fetch */
  86 /*                      0x22       unused */
  87 /*                      0x23       unused */
  88 #define T_CPDISABLED    0x24    /* (5) coprocessor instr while disabled */
  89 #define T_UNIMPLFLUSH   0x25    /* Unimplemented FLUSH */
  90 /*      through         0x27       unused */
  91 #define T_CPEXCEPTION   0x28    /* (11) coprocessor exception */
  92 #define T_DATAERROR     0x29    /* (12) address error during data fetch */
  93 #define T_IDIV0         0x2a    /* divide by zero (from hw [su]div instr) */
  94 #define T_STOREBUFFAULT 0x2b    /* SuperSPARC: Store buffer copy-back fault */
  95 /*                      0x2c       unused */
  96 /*      through         0x7f       unused */
  97
  98 /* beginning of `user' vectors (from trap instructions) - all priority 12 */
  99 #define T_SUN_SYSCALL   0x80    /* system call */
 100 #define T_BREAKPOINT    0x81    /* breakpoint `instruction' */
 101 #define T_DIV0          0x82    /* explicitly signal division by zero */
 102 #define T_FLUSHWIN      0x83    /* flush windows */
 103 #define T_CLEANWIN      0x84    /* request new windows to be cleaned */
 104 #define T_RANGECHECK    0x85    /* explicitly signal a range checking error */
 105 #define T_FIXALIGN      0x86    /* fix up unaligned accesses */
 106 #define T_INTOF         0x87    /* explicitly signal integer overflow */
 107 #define T_SVR4_SYSCALL  0x88    /* SVR4 system call */
 108
 109 /* 0x89..0x8f - reserved for the OS */
 110 #define T_BSD_SYSCALL   0x89    /* BSD system call */
 111 #define T_KGDB_EXEC     0x8a    /* for kernel gdb */
 112 #define T_DBPAUSE       0x8b    /* for smp kernel debugging */
 113
 114 /* 0x90..0x9f - reserved, will never be specified */
 115
 116 /* 0xa0..0xff are currently unallocated, except the following */
 117 #define T_SVR4_GETCC            0xa0
 118 #define T_SVR4_SETCC            0xa1
 119 #define T_SVR4_GETPSR           0xa2
 120 #define T_SVR4_SETPSR           0xa3
 121 #define T_SVR4_GETHRTIME        0xa4
 122 #define T_SVR4_GETHRVTIME       0xa5
 123 #define T_SVR4_GETHRESTIME      0xa7
 124
 125
 126 #ifdef _KERNEL                  /* pseudo traps for locore.s */
 127 #define T_RWRET         -1      /* need first user window for trap return */
 128 #define T_AST           -2      /* no-op, just needed reschedule or profile */
 129 #endif
 130
 131 /* flags to system call (flags in %g1 along with syscall number) */
 132 #define SYSCALL_G2RFLAG 0x400   /* on success, return to %g2 rather than npc */
 133 #define SYSCALL_G7RFLAG 0x800   /* use %g7 as above (deprecated) */
 134
 135 /*
 136  * `software trap' macros to keep people happy (sparc v8 manual says not
 137  * to set the upper bits).
 138  */
 139 #define ST_SYSCALL      (T_SUN_SYSCALL & 0x7f)
 140 #define ST_BREAKPOINT   (T_BREAKPOINT & 0x7f)
 141 #define ST_DIV0         (T_DIV0 & 0x7f)
 142 #define ST_FLUSHWIN     (T_FLUSHWIN & 0x7f)
 143
 144 #endif /* _MACHINE_TRAP_H_ */