Annotation of sys/arch/sparc/include/trap.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: trap.h,v 1.5 2003/06/02 23:27:54 millert Exp $ */
2: /* $NetBSD: trap.h,v 1.9 1996/05/16 15:57:04 abrown Exp $ */
3:
4: /*
5: * Copyright (c) 1992, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * This software was developed by the Computer Systems Engineering group
9: * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
10: * contributed to Berkeley.
11: *
12: * All advertising materials mentioning features or use of this software
13: * must display the following acknowledgement:
14: * This product includes software developed by the University of
15: * California, Lawrence Berkeley Laboratory.
16: *
17: * Redistribution and use in source and binary forms, with or without
18: * modification, are permitted provided that the following conditions
19: * are met:
20: * 1. Redistributions of source code must retain the above copyright
21: * notice, this list of conditions and the following disclaimer.
22: * 2. Redistributions in binary form must reproduce the above copyright
23: * notice, this list of conditions and the following disclaimer in the
24: * documentation and/or other materials provided with the distribution.
25: * 3. Neither the name of the University nor the names of its contributors
26: * may be used to endorse or promote products derived from this software
27: * without specific prior written permission.
28: *
29: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39: * SUCH DAMAGE.
40: *
41: * @(#)trap.h 8.1 (Berkeley) 6/11/93
42: */
43: /*
44: * Sun4m support by Aaron Brown, Harvard University.
45: * Changes Copyright (c) 1995 The President and Fellows of Harvard College.
46: * All rights reserved.
47: */
48:
49: #ifndef _MACHINE_TRAP_H
50: #define _MACHINE_TRAP_H
51:
52: /*
53: * vectors 0x00..0x1f are common to all sparc implementations, while
54: * vectors 0x20..0x2f are selectively implemented by some v8 cpu's
55: * either to support new instructions or simplify fault decoding.
56: * For sanity, these defines should match the layout of the trap
57: * table, but some cases may be treated in common. The priorities
58: * listed are correct, but the v8 traps been inserted "between levels".
59: */
60:
61: /* trap vec (pri) description */
62: #define T_RESET 0x00 /* (1) not actually vectored; jumps to 0 */
63: #define T_TEXTFAULT 0x01 /* (2) address fault during instr fetch */
64: #define T_ILLINST 0x02 /* (3) illegal instruction */
65: #define T_PRIVINST 0x03 /* (4) privileged instruction */
66: #define T_FPDISABLED 0x04 /* (5) fp instr while fp disabled */
67: #define T_WINOF 0x05 /* (6) register window overflow */
68: #define T_WINUF 0x06 /* (7) register window underflow */
69: #define T_ALIGN 0x07 /* (8) address not properly aligned */
70: #define T_FPE 0x08 /* (9) floating point exception */
71: #define T_DATAFAULT 0x09 /* (10) address fault during data fetch */
72: #define T_TAGOF 0x0a /* (11) tag overflow */
73: /* 0x0b unused */
74: /* 0x0c unused */
75: /* 0x0d unused */
76: /* 0x0e unused */
77: /* 0x0f unused */
78: /* 0x10 unused */
79: #define T_L1INT 0x11 /* (27) level 1 interrupt */
80: #define T_L2INT 0x12 /* (26) level 2 interrupt */
81: #define T_L3INT 0x13 /* (25) level 3 interrupt */
82: #define T_L4INT 0x14 /* (24) level 4 interrupt */
83: #define T_L5INT 0x15 /* (23) level 5 interrupt */
84: #define T_L6INT 0x16 /* (22) level 6 interrupt */
85: #define T_L7INT 0x17 /* (21) level 7 interrupt */
86: #define T_L8INT 0x18 /* (20) level 8 interrupt */
87: #define T_L9INT 0x19 /* (19) level 9 interrupt */
88: #define T_L10INT 0x1a /* (18) level 10 interrupt */
89: #define T_L11INT 0x1b /* (17) level 11 interrupt */
90: #define T_L12INT 0x1c /* (16) level 12 interrupt */
91: #define T_L13INT 0x1d /* (15) level 13 interrupt */
92: #define T_L14INT 0x1e /* (14) level 14 interrupt */
93: #define T_L15INT 0x1f /* (13) level 15 interrupt */
94: #define T_RREGERROR 0x20 /* (?) r-register access error (v8?) */
95: #define T_TEXTERROR 0x21 /* (<2) error during instruction access (v8) */
96: /* 0x22 unused */
97: /* through 0x23 unused */
98: #define T_CPDISABLED 0x24 /* (5) coprocessor instr while disabled */
99: /* 0x25 unused */
100: /* through 0x27 unused */
101: #define T_CPEXCEPTION 0x28 /* (9) coprocessor exception */
102: #define T_DATAERROR 0x29 /* (<9) error during data access (v8) */
103: #define T_IDIV0 0x2a /* (<11) integer divide by zero (v8) */
104: #define T_STOREBUFFAULT 0x2b /* SuperSPARC: Store buffer copy-back fault */
105: /* 0x2c unused */
106: /* through 0x7f unused */
107:
108: /* beginning of `user' vectors (from trap instructions) - all priority 12 */
109: #define T_SUN_SYSCALL 0x80 /* system call */
110: #define T_BREAKPOINT 0x81 /* breakpoint `instruction' */
111: #define T_DIV0 0x82 /* division routine was handed 0 */
112: #define T_FLUSHWIN 0x83 /* flush windows */
113: #define T_CLEANWIN 0x84 /* provide clean windows */
114: #define T_RANGECHECK 0x85 /* ? */
115: #define T_FIXALIGN 0x86 /* fix up unaligned accesses */
116: #define T_INTOF 0x87 /* integer overflow ? */
117: #define T_SVR4_SYSCALL 0x88 /* SVR4 system call */
118: #define T_BSD_SYSCALL 0x89 /* BSD system call */
119: #define T_KGDB_EXEC 0x8a /* for kernel gdb */
120:
121: /* 0x8b..0xff are currently unallocated, except the following */
122: #define T_SVR4_GETCC 0xa0
123: #define T_SVR4_SETCC 0xa1
124: #define T_SVR4_GETPSR 0xa2
125: #define T_SVR4_SETPSR 0xa3
126: #define T_SVR4_GETHRTIME 0xa4
127: #define T_SVR4_GETHRVTIME 0xa5
128: #define T_SVR4_GETHRESTIME 0xa7
129:
130:
131: #ifdef _KERNEL /* pseudo traps for locore.s */
132: #define T_RWRET -1 /* need first user window for trap return */
133: #define T_AST -2 /* no-op, just needed reschedule or profile */
134: #endif
135:
136: /* flags to system call (flags in %g1 along with syscall number) */
137: #define SYSCALL_G2RFLAG 0x400 /* on success, return to %g2 rather than npc */
138: #define SYSCALL_G7RFLAG 0x800 /* use %g7 as above (deprecated) */
139:
140: /*
141: * `software trap' macros to keep people happy (sparc v8 manual says not
142: * to set the upper bits).
143: */
144: #define ST_BREAKPOINT (T_BREAKPOINT & 0x7f)
145: #define ST_DIV0 (T_DIV0 & 0x7f)
146: #define ST_FLUSHWIN (T_FLUSHWIN & 0x7f)
147: #define ST_SYSCALL (T_SUN_SYSCALL & 0x7f)
148:
149: #endif /* _MACHINE_TRAP_H_ */
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