Annotation of sys/arch/mips64/include/trap.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: trap.h,v 1.8 2007/05/20 14:34:21 miod Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 1988 University of Utah.
! 5: * Copyright (c) 1992, 1993
! 6: * The Regents of the University of California. All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to Berkeley by
! 9: * the Systems Programming Group of the University of Utah Computer
! 10: * Science Department and Ralph Campbell.
! 11: *
! 12: * Redistribution and use in source and binary forms, with or without
! 13: * modification, are permitted provided that the following conditions
! 14: * are met:
! 15: * 1. Redistributions of source code must retain the above copyright
! 16: * notice, this list of conditions and the following disclaimer.
! 17: * 2. Redistributions in binary form must reproduce the above copyright
! 18: * notice, this list of conditions and the following disclaimer in the
! 19: * documentation and/or other materials provided with the distribution.
! 20: * 3. Neither the name of the University nor the names of its contributors
! 21: * may be used to endorse or promote products derived from this software
! 22: * without specific prior written permission.
! 23: *
! 24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 34: * SUCH DAMAGE.
! 35: *
! 36: * from: Utah Hdr: trap.h 1.1 90/07/09
! 37: * from: @(#)trap.h 8.1 (Berkeley) 6/10/93
! 38: */
! 39:
! 40: #ifndef _MIPS_TRAP_H_
! 41: #define _MIPS_TRAP_H_
! 42:
! 43: /*
! 44: * Trap codes (ExcCode in the cause register); also known in trap.c for
! 45: * name strings.
! 46: */
! 47:
! 48: #define T_INT 0 /* Interrupt pending */
! 49: #define T_TLB_MOD 1 /* TLB modified fault */
! 50: #define T_TLB_LD_MISS 2 /* TLB miss on load or ifetch */
! 51: #define T_TLB_ST_MISS 3 /* TLB miss on a store */
! 52: #define T_ADDR_ERR_LD 4 /* Address error on a load or ifetch */
! 53: #define T_ADDR_ERR_ST 5 /* Address error on a store */
! 54: #define T_BUS_ERR_IFETCH 6 /* Bus error on an ifetch */
! 55: #define T_BUS_ERR_LD_ST 7 /* Bus error on a load or store */
! 56: #define T_SYSCALL 8 /* System call */
! 57: #define T_BREAK 9 /* Breakpoint */
! 58: #define T_RES_INST 10 /* Reserved instruction exception */
! 59: #define T_COP_UNUSABLE 11 /* Coprocessor unusable */
! 60: #define T_OVFLOW 12 /* Arithmetic overflow */
! 61: #define T_TRAP 13 /* Trap instruction */
! 62: #define T_VCEI 14 /* R4k Virtual coherency instruction */
! 63: #define T_FPE 15 /* Floating point exception */
! 64: #define T_IWATCH 16 /* R4k Inst. Watch address reference */
! 65: #define T_C2E 18 /* R5k Coprocessor 2 exception */
! 66: #define T_MDMX 22 /* R5k MDMX unusable */
! 67: #define T_DWATCH 23 /* Data Watch address reference */
! 68: #define T_MCHECK 24 /* Machine check */
! 69: #define T_CACHEERR 30 /* Cache error */
! 70: #define T_VCED 31 /* R4k Virtual coherency data */
! 71:
! 72: #define T_USER 0x20 /* user-mode flag or'ed with type */
! 73:
! 74: /*
! 75: * Defines for trap handler catching kernel accessng memory.
! 76: */
! 77: #define KT_COPYERR 1 /* User space copy error */
! 78: #define KT_KCOPYERR 2 /* Kernel space copy error */
! 79: #define KT_DDBERR 3 /* DDB access error */
! 80:
! 81: #ifndef _LOCORE
! 82:
! 83: #if defined(DDB) || defined(DEBUG)
! 84:
! 85: struct trapdebug { /* trap history buffer for debugging */
! 86: u_int status;
! 87: u_int cause;
! 88: u_long vadr;
! 89: u_long pc;
! 90: u_long ra;
! 91: u_long sp;
! 92: u_int code;
! 93: u_int cpl;
! 94: };
! 95:
! 96: #define trapdebug_enter(x, cd) { \
! 97: u_int32_t __s = disableintr(); \
! 98: trp->status = x->sr; \
! 99: trp->cause = x->cause; \
! 100: trp->vadr = x->badvaddr; \
! 101: trp->pc = x->pc; \
! 102: trp->sp = x->sp; \
! 103: trp->ra = x->ra; \
! 104: trp->cpl = x->cpl; \
! 105: trp->code = cd; \
! 106: if (++trp == &trapdebug[TRAPSIZE]) \
! 107: trp = trapdebug; \
! 108: setsr(__s); \
! 109: }
! 110:
! 111: #define TRAPSIZE 10 /* Trap log buffer length */
! 112: extern struct trapdebug trapdebug[TRAPSIZE], *trp;
! 113:
! 114: void trapDump(char *msg);
! 115:
! 116: #else
! 117:
! 118: #define trapdebug_enter(x, y)
! 119:
! 120: #endif
! 121: #endif /* _LOCORE */
! 122:
! 123: #endif /* !_MIPS_TRAP_H_ */
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