2 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
3 * Copyright (C) 1995, 1996 TooLs GmbH.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by TooLs GmbH.
17 * 4. The name of TooLs GmbH may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 * $NetBSD: trap.h,v 1.7 2002/02/22 13:51:40 kleink Exp $
35 #ifndef _POWERPC_TRAP_H_
36 #define _POWERPC_TRAP_H_
38 #define EXC_RSVD 0x0000 /* Reserved */
39 #define EXC_RST 0x0100 /* Reset; all but IBM4xx */
40 #define EXC_MCHK 0x0200 /* Machine Check */
41 #define EXC_DSI 0x0300 /* Data Storage Interrupt */
42 #define EXC_ISI 0x0400 /* Instruction Storage Interrupt */
43 #define EXC_EXI 0x0500 /* External Interrupt */
44 #define EXC_ALI 0x0600 /* Alignment Interrupt */
45 #define EXC_PGM 0x0700 /* Program Interrupt */
46 #define EXC_FPU 0x0800 /* Floating-point Unavailable */
47 #define EXC_DECR 0x0900 /* Decrementer Interrupt */
48 #define EXC_SC 0x0c00 /* System Call */
49 #define EXC_TRC 0x0d00 /* Trace */
50 #define EXC_FPA 0x0e00 /* Floating-point Assist */
52 /* The following is only available on the 601: */
53 #define EXC_RUNMODETRC 0x2000 /* Run Mode/Trace Exception */
55 /* The following are only available on 970(G5): */
56 #define EXC_VECAST_G5 0x1700 /* AltiVec Assist */
58 /* The following are only available on 7400(G4): */
59 #define EXC_VEC 0x0f20 /* AltiVec Unavailable */
60 #define EXC_VECAST_G4 0x1600 /* AltiVec Assist */
62 /* The following are only available on 604/750/7400: */
63 #define EXC_PERF 0x0f00 /* Performance Monitoring */
64 #define EXC_BPT 0x1300 /* Instruction Breakpoint */
65 #define EXC_SMI 0x1400 /* System Managment Interrupt */
67 /* The following are only available on 750/7400: */
68 #define EXC_THRM 0x1700 /* Thermal Management Interrupt */
70 /* And these are only on the 603: */
71 #define EXC_IMISS 0x1000 /* Instruction translation miss */
72 #define EXC_DLMISS 0x1100 /* Data load translation miss */
73 #define EXC_DSMISS 0x1200 /* Data store translation miss */
75 /* The following are available on 4xx and 85xx */
76 #define EXC_CII 0x0100 /* Critical Input Interrupt */
77 #define EXC_PIT 0x1000 /* Programmable Interval Timer */
78 #define EXC_FIT 0x1010 /* Fixed Interval Timer */
79 #define EXC_WDOG 0x1020 /* Watchdog Timer */
80 #define EXC_DTMISS 0x1100 /* Data TLB Miss */
81 #define EXC_ITMISS 0x1200 /* Instruction TLB Miss */
82 #define EXC_DEBUG 0x2000 /* Debug trap */
84 #define EXC_LAST 0x2f00 /* Last possible exception vector */
86 #define EXC_AST 0x3000 /* Fake AST vector */
88 /* Trap was in user mode */
89 #define EXC_USER 0x10000
93 * EXC_ALI sets bits in the DSISR and DAR to provide enough
94 * information to recover from the unaligned access without needing to
95 * parse the offending instruction. This includes certain bits of the
96 * opcode, and information about what registers are used. The opcode
97 * indicator values below come from Appendix F of Book III of "The
98 * PowerPC Architecture".
101 #define EXC_ALI_OPCODE_INDICATOR(dsisr) ((dsisr >> 10) & 0x7f)
102 #define EXC_ALI_LFD 0x09
103 #define EXC_ALI_STFD 0x0b
105 /* Macros to extract register information */
106 #define EXC_ALI_RST(dsisr) ((dsisr >> 5) & 0x1f) /* source or target */
107 #define EXC_ALI_RA(dsisr) (dsisr & 0x1f)
110 * SRR1 bits for program exception traps. These identify what caused
111 * the program exception. See section 6.5.9 of the Power ISA Version
115 #define EXC_PGM_FPENABLED (1UL << 20)
116 #define EXC_PGM_ILLEGAL (1UL << 19)
117 #define EXC_PGM_PRIV (1UL << 18)
118 #define EXC_PGM_TRAP (1UL << 17)
120 #endif /* _POWERPC_TRAP_H_ */