/* $OpenBSD: trap.h,v 1.4 1997/08/08 08:26:51 downsj Exp $ */ /* $NetBSD: trap.h,v 1.9 1996/05/16 15:57:04 abrown Exp $ */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Lawrence Berkeley Laboratory. * * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 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. * * @(#)trap.h 8.1 (Berkeley) 6/11/93 */ /* * Sun4m support by Aaron Brown, Harvard University. * Changes Copyright (c) 1995 The President and Fellows of Harvard College. * All rights reserved. */ #ifndef _MACHINE_TRAP_H #define _MACHINE_TRAP_H /* * vectors 0x00..0x1f are common to all sparc implementations, while * vectors 0x20..0x2f are selectively implemented by some v8 cpu's * either to support new instructions or simplify fault decoding. * For sanity, these defines should match the layout of the trap * table, but some cases may be treated in common. The priorities * listed are correct, but the v8 traps been inserted "between levels". */ /* trap vec (pri) description */ #define T_RESET 0x00 /* (1) not actually vectored; jumps to 0 */ #define T_TEXTFAULT 0x01 /* (2) address fault during instr fetch */ #define T_ILLINST 0x02 /* (3) illegal instruction */ #define T_PRIVINST 0x03 /* (4) privileged instruction */ #define T_FPDISABLED 0x04 /* (5) fp instr while fp disabled */ #define T_WINOF 0x05 /* (6) register window overflow */ #define T_WINUF 0x06 /* (7) register window underflow */ #define T_ALIGN 0x07 /* (8) address not properly aligned */ #define T_FPE 0x08 /* (9) floating point exception */ #define T_DATAFAULT 0x09 /* (10) address fault during data fetch */ #define T_TAGOF 0x0a /* (11) tag overflow */ /* 0x0b unused */ /* 0x0c unused */ /* 0x0d unused */ /* 0x0e unused */ /* 0x0f unused */ /* 0x10 unused */ #define T_L1INT 0x11 /* (27) level 1 interrupt */ #define T_L2INT 0x12 /* (26) level 2 interrupt */ #define T_L3INT 0x13 /* (25) level 3 interrupt */ #define T_L4INT 0x14 /* (24) level 4 interrupt */ #define T_L5INT 0x15 /* (23) level 5 interrupt */ #define T_L6INT 0x16 /* (22) level 6 interrupt */ #define T_L7INT 0x17 /* (21) level 7 interrupt */ #define T_L8INT 0x18 /* (20) level 8 interrupt */ #define T_L9INT 0x19 /* (19) level 9 interrupt */ #define T_L10INT 0x1a /* (18) level 10 interrupt */ #define T_L11INT 0x1b /* (17) level 11 interrupt */ #define T_L12INT 0x1c /* (16) level 12 interrupt */ #define T_L13INT 0x1d /* (15) level 13 interrupt */ #define T_L14INT 0x1e /* (14) level 14 interrupt */ #define T_L15INT 0x1f /* (13) level 15 interrupt */ #define T_RREGERROR 0x20 /* (?) r-register access error (v8?) */ #define T_TEXTERROR 0x21 /* (<2) error during instruction access (v8) */ /* 0x22 unused */ /* through 0x23 unused */ #define T_CPDISABLED 0x24 /* (5) coprocessor instr while disabled */ /* 0x25 unused */ /* through 0x27 unused */ #define T_CPEXCEPTION 0x28 /* (9) coprocessor exception */ #define T_DATAERROR 0x29 /* (<9) error during data access (v8) */ #define T_IDIV0 0x2a /* (<11) integer divide by zero (v8) */ #define T_STOREBUFFAULT 0x2b /* SuperSPARC: Store buffer copy-back fault */ /* 0x2c unused */ /* through 0x7f unused */ /* beginning of `user' vectors (from trap instructions) - all priority 12 */ #define T_SUN_SYSCALL 0x80 /* system call */ #define T_BREAKPOINT 0x81 /* breakpoint `instruction' */ #define T_DIV0 0x82 /* division routine was handed 0 */ #define T_FLUSHWIN 0x83 /* flush windows */ #define T_CLEANWIN 0x84 /* provide clean windows */ #define T_RANGECHECK 0x85 /* ? */ #define T_FIXALIGN 0x86 /* fix up unaligned accesses */ #define T_INTOF 0x87 /* integer overflow ? */ #define T_SVR4_SYSCALL 0x88 /* SVR4 system call */ #define T_BSD_SYSCALL 0x89 /* BSD system call */ #define T_KGDB_EXEC 0x8a /* for kernel gdb */ /* 0x8b..0xff are currently unallocated, except the following */ #define T_SVR4_GETCC 0xa0 #define T_SVR4_SETCC 0xa1 #define T_SVR4_GETPSR 0xa2 #define T_SVR4_SETPSR 0xa3 #define T_SVR4_GETHRTIME 0xa4 #define T_SVR4_GETHRVTIME 0xa5 #define T_SVR4_GETHRESTIME 0xa7 #ifdef _KERNEL /* pseudo traps for locore.s */ #define T_RWRET -1 /* need first user window for trap return */ #define T_AST -2 /* no-op, just needed reschedule or profile */ #endif /* flags to system call (flags in %g1 along with syscall number) */ #define SYSCALL_G2RFLAG 0x400 /* on success, return to %g2 rather than npc */ #define SYSCALL_G7RFLAG 0x800 /* use %g7 as above (deprecated) */ /* * `software trap' macros to keep people happy (sparc v8 manual says not * to set the upper bits). */ #define ST_BREAKPOINT (T_BREAKPOINT & 0x7f) #define ST_DIV0 (T_DIV0 & 0x7f) #define ST_FLUSHWIN (T_FLUSHWIN & 0x7f) #define ST_SYSCALL (T_SUN_SYSCALL & 0x7f) #endif /* _MACHINE_TRAP_H_ */