1 /* $NetBSD: trap.h,v 1.11 1999/01/20 00:15:08 pk Exp $ */
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
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.
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13 * This product includes software developed by the University of
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44 * @(#)trap.h 8.1 (Berkeley) 6/11/93
47 * Sun4m support by Aaron Brown, Harvard University.
48 * Changes Copyright (c) 1995 The President and Fellows of Harvard College.
49 * All rights reserved.
52 #ifndef _MACHINE_TRAP_H
53 #define _MACHINE_TRAP_H
55 /* trap vec (pri) description */
56 #define T_RESET 0x00 /* (1) not actually vectored; jumps to 0 */
57 #define T_TEXTFAULT 0x01 /* (2) address fault during instr fetch */
58 #define T_ILLINST 0x02 /* (3) illegal instruction */
59 #define T_PRIVINST 0x03 /* (4) privileged instruction */
60 #define T_FPDISABLED 0x04 /* (5) fp instr while fp disabled */
61 #define T_WINOF 0x05 /* (6) register window overflow */
62 #define T_WINUF 0x06 /* (7) register window underflow */
63 #define T_ALIGN 0x07 /* (8) address not properly aligned */
64 #define T_FPE 0x08 /* (9) floating point exception */
65 #define T_DATAFAULT 0x09 /* (10) address fault during data fetch */
66 #define T_TAGOF 0x0a /* (11) tag overflow */
73 #define T_L1INT 0x11 /* (27) level 1 interrupt */
74 #define T_L2INT 0x12 /* (26) level 2 interrupt */
75 #define T_L3INT 0x13 /* (25) level 3 interrupt */
76 #define T_L4INT 0x14 /* (24) level 4 interrupt */
77 #define T_L5INT 0x15 /* (23) level 5 interrupt */
78 #define T_L6INT 0x16 /* (22) level 6 interrupt */
79 #define T_L7INT 0x17 /* (21) level 7 interrupt */
80 #define T_L8INT 0x18 /* (20) level 8 interrupt */
81 #define T_L9INT 0x19 /* (19) level 9 interrupt */
82 #define T_L10INT 0x1a /* (18) level 10 interrupt */
83 #define T_L11INT 0x1b /* (17) level 11 interrupt */
84 #define T_L12INT 0x1c /* (16) level 12 interrupt */
85 #define T_L13INT 0x1d /* (15) level 13 interrupt */
86 #define T_L14INT 0x1e /* (14) level 14 interrupt */
87 #define T_L15INT 0x1f /* (13) level 15 interrupt */
89 /* through 0x23 unused */
90 #define T_CPDISABLED 0x24 /* (5) coprocessor instr while disabled */
91 #define T_UNIMPLFLUSH 0x25 /* Unimplemented FLUSH */
92 /* through 0x27 unused */
93 #define T_CPEXCEPTION 0x28 /* (9) coprocessor exception */
95 #define T_IDIV0 0x2a /* divide by zero (from hw [su]div instr) */
96 #define T_STOREBUFFAULT 0x2b /* SuperSPARC: Store buffer copy-back fault */
98 /* through 0x7f unused */
100 /* beginning of `user' vectors (from trap instructions) - all priority 12 */
101 #define T_SUN_SYSCALL 0x80 /* system call */
102 #define T_BREAKPOINT 0x81 /* breakpoint `instruction' */
103 #define T_DIV0 0x82 /* division routine was handed 0 */
104 #define T_FLUSHWIN 0x83 /* flush windows */
105 #define T_CLEANWIN 0x84 /* provide clean windows */
106 #define T_RANGECHECK 0x85 /* ? */
107 #define T_FIXALIGN 0x86 /* fix up unaligned accesses */
108 #define T_INTOF 0x87 /* integer overflow ? */
109 #define T_SVR4_SYSCALL 0x88 /* SVR4 system call */
110 #define T_BSD_SYSCALL 0x89 /* BSD system call */
111 #define T_KGDB_EXEC 0x8a /* for kernel gdb */
113 /* 0x8b..0xff are currently unallocated, except the following */
114 #define T_SVR4_GETCC 0xa0
115 #define T_SVR4_SETCC 0xa1
116 #define T_SVR4_GETPSR 0xa2
117 #define T_SVR4_SETPSR 0xa3
118 #define T_SVR4_GETHRTIME 0xa4
119 #define T_SVR4_GETHRVTIME 0xa5
120 #define T_SVR4_GETHRESTIME 0xa7
123 #ifdef _KERNEL /* pseudo traps for locore.s */
124 #define T_RWRET -1 /* need first user window for trap return */
125 #define T_AST -2 /* no-op, just needed reschedule or profile */
128 /* flags to system call (flags in %g1 along with syscall number) */
129 #define SYSCALL_G2RFLAG 0x400 /* on success, return to %g2 rather than npc */
130 #define SYSCALL_G7RFLAG 0x800 /* use %g7 as above (deprecated) */
133 * `software trap' macros to keep people happy (sparc v8 manual says not
134 * to set the upper bits).
136 #define ST_BREAKPOINT (T_BREAKPOINT & 0x7f)
137 #define ST_DIV0 (T_DIV0 & 0x7f)
138 #define ST_FLUSHWIN (T_FLUSHWIN & 0x7f)
139 #define ST_SYSCALL (T_SUN_SYSCALL & 0x7f)
141 #endif /* _MACHINE_TRAP_H_ */