1 /* $NetBSD: trap.h,v 1.20 2021/01/24 07:36:54 mrg 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 */ 107 108 /* 0x89..0x8f - reserved for the OS */ 109 #define T_BSD_SYSCALL 0x89 /* BSD system call */ 110 #define T_KGDB_EXEC 0x8a /* for kernel gdb */ 111 #define T_DBPAUSE 0x8b /* for smp kernel debugging */ 112 113 /* 0x90..0x9f - reserved, will never be specified */ 114 115 /* 0xa0..0xff are currently unallocated */ 116 117 #ifdef _KERNEL /* pseudo traps for locore.s */ 118 #define T_RWRET -1 /* need first user window for trap return */ 119 #define T_AST -2 /* no-op, just needed reschedule or profile */ 120 #endif 121 122 /* flags to system call (flags in %g1 along with syscall number) */ 123 #define SYSCALL_G2RFLAG 0x400 /* on success, return to %g2 rather than npc */ 124 #define SYSCALL_G7RFLAG 0x800 /* use %g7 as above (deprecated) */ 125 #define SYSCALL_G5RFLAG 0xc00 /* use %g5 as above (only ABI compatible way) */ 126 127 /* 128 * `software trap' macros to keep people happy (sparc v8 manual says not 129 * to set the upper bits). 130 */ 131 #define ST_SYSCALL (T_SUN_SYSCALL & 0x7f) 132 #define ST_BREAKPOINT (T_BREAKPOINT & 0x7f) 133 #define ST_DIV0 (T_DIV0 & 0x7f) 134 #define ST_FLUSHWIN (T_FLUSHWIN & 0x7f) 135 136 #if defined(_KERNEL) && !defined(_LOCORE) 137 extern const char *trap_type[]; 138 extern struct fpstate initfpstate; 139 #endif 140 141 #endif /* _MACHINE_TRAP_H_ */ 142