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Diffstat (limited to 'sys/mips/include/trap.h')
| -rw-r--r-- | sys/mips/include/trap.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/sys/mips/include/trap.h b/sys/mips/include/trap.h new file mode 100644 index 0000000..a00ca90 --- /dev/null +++ b/sys/mips/include/trap.h @@ -0,0 +1,117 @@ +/* $OpenBSD: trap.h,v 1.3 1999/01/27 04:46:06 imp Exp $ */ + +/*- + * Copyright (c) 1988 University of Utah. + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * the Systems Programming Group of the University of Utah Computer + * Science Department and Ralph Campbell. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * from: Utah Hdr: trap.h 1.1 90/07/09 + * from: @(#)trap.h 8.1 (Berkeley) 6/10/93 + * JNPR: trap.h,v 1.3 2006/12/02 09:53:41 katta + * $FreeBSD$ + */ + +#ifndef _MACHINE_TRAP_H_ +#define _MACHINE_TRAP_H_ + +/* + * Trap codes also known in trap.c for name strings. + * Used for indexing so modify with care. + */ + +#define T_INT 0 /* Interrupt pending */ +#define T_TLB_MOD 1 /* TLB modified fault */ +#define T_TLB_LD_MISS 2 /* TLB miss on load or ifetch */ +#define T_TLB_ST_MISS 3 /* TLB miss on a store */ +#define T_ADDR_ERR_LD 4 /* Address error on a load or ifetch */ +#define T_ADDR_ERR_ST 5 /* Address error on a store */ +#define T_BUS_ERR_IFETCH 6 /* Bus error on an ifetch */ +#define T_BUS_ERR_LD_ST 7 /* Bus error on a load or store */ +#define T_SYSCALL 8 /* System call */ +#define T_BREAK 9 /* Breakpoint */ +#define T_RES_INST 10 /* Reserved instruction exception */ +#define T_COP_UNUSABLE 11 /* Coprocessor unusable */ +#define T_OVFLOW 12 /* Arithmetic overflow */ +#define T_TRAP 13 /* Trap instruction */ +#define T_VCEI 14 /* Virtual coherency instruction */ +#define T_FPE 15 /* Floating point exception */ +#define T_IWATCH 16 /* Inst. Watch address reference */ +#define T_C2E 18 /* Exception from coprocessor 2 */ +#define T_DWATCH 23 /* Data Watch address reference */ +#define T_MCHECK 24 /* Received an MCHECK */ +#define T_VCED 31 /* Virtual coherency data */ + +#define T_USER 0x20 /* user-mode flag or'ed with type */ + +#if !defined(SMP) && (defined(DDB) || defined(DEBUG)) + +struct trapdebug { /* trap history buffer for debugging */ + u_int status; + u_int cause; + u_int vadr; + u_int pc; + u_int ra; + u_int sp; + u_int code; +}; + +#define trapdebug_enter(x, cd) { \ + intrmask_t s = disableintr(); \ + trp->status = x->sr; \ + trp->cause = x->cause; \ + trp->vadr = x->badvaddr; \ + trp->pc = x->pc; \ + trp->sp = x->sp; \ + trp->ra = x->ra; \ + trp->code = cd; \ + if (++trp == &trapdebug[TRAPSIZE]) \ + trp = trapdebug; \ + restoreintr(s); \ +} + +#define TRAPSIZE 10 /* Trap log buffer length */ +extern struct trapdebug trapdebug[TRAPSIZE], *trp; + +void trapDump(char *msg); + +#else + +#define trapdebug_enter(x, cd) + +#endif + +#ifndef LOCORE /* XXX */ +int check_address(void *); +void platform_trap_enter(void); +void platform_trap_exit(void); +#endif + +#endif /* !_MACHINE_TRAP_H_ */ |
