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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24:
25: /*
26: * HISTORY
27: * Revision 1.3 1997/11/06 21:07:55 umeshv
28: * Cleaned up incorrect use of __PPC__, and __I386__
29: * Fixed the feature inclusion to be #ifdef KERNEL_BUILD
30: *
31: * Revision 1.2 1997/10/29 02:13:46 tmason
32: * Fixed oodles of bugs related to pmap issues as well as bcopy, FLOAT!, and cached accesses.
33: * Radar Bug ID:
34: *
35: * Revision 1.1.1.1 1997/09/30 02:45:20 wsanchez
36: * Import of kernel from umeshv/kernel
37: *
38: * Radar #1660195
39: * Revision 1.1.??.? 1997/06/29 01:52:00 rvega
40: * Radar #1660195
41: * Add LR plus volatile regs in PP area. This is
42: * needed for the MMU support (PTEG overflow)
43: * [1997/06/29 01:52:00 rvega]
44: *
45: */
46:
47: /*
48: * Copyright 1996 1995 by Open Software Foundation, Inc. 1997 1996 1995 1994 1993 1992 1991
49: * All Rights Reserved
50: *
51: * Permission to use, copy, modify, and distribute this software and
52: * its documentation for any purpose and without fee is hereby granted,
53: * provided that the above copyright notice appears in all copies and
54: * that both the copyright notice and this permission notice appear in
55: * supporting documentation.
56: *
57: * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
58: * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
59: * FOR A PARTICULAR PURPOSE.
60: *
61: * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
62: * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
63: * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
64: * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
65: * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
66: */
67: /*
68: * MKLINUX-1.0DR2
69: */
70:
71: /* Miscellaneous constants and structures used by the exception
72: * handlers
73: */
74:
75: #ifndef _PPC_EXCEPTION_H_
76: #define _PPC_EXCEPTION_H_
77:
78: #ifndef __ASSEMBLER__
79:
80: #include <machdep/ppc/mem.h>
81: #if defined(KERNEL_BUILD)
82: #include <cpus.h>
83: #endif /* KERNEL_BUILD */
84: #include <machdep/ppc/thread.h>
85:
86: /* When an exception is taken, this info is accessed via sprg0 */
87:
88: struct per_proc_info {
89: unsigned int save_cr;
90: unsigned int save_lr;
91: unsigned int save_srr0;
92: unsigned int save_srr1;
93: unsigned int save_dar;
94: unsigned int save_dsisr;
95: unsigned int save_sprg0;
96: unsigned int save_sprg1;
97: unsigned int save_sprg2;
98: unsigned int save_sprg3;
99: unsigned int save_exception_type;
100:
101: unsigned int phys_exception_handlers;
102: unsigned int virt_per_proc_info; /* virt addr for our CPU */
103:
104: /* This save area is for the volatile registers used by the
105: firmware functions.
106: */
107: unsigned int save_r0;
108: unsigned int save_r1;
109: unsigned int save_r2;
110: unsigned int save_r3;
111: unsigned int save_r4;
112: unsigned int save_r5;
113: unsigned int save_r6;
114: unsigned int save_r7;
115: unsigned int save_r8;
116: unsigned int save_r9;
117: unsigned int save_r10;
118: unsigned int save_r11;
119: unsigned int save_r12;
120: #if TRUE
121: unsigned int save_r13;
122: unsigned int save_r14;
123: unsigned int save_r15;
124: unsigned int save_r16;
125: unsigned int save_r17;
126: unsigned int save_r18;
127: unsigned int save_r19;
128: unsigned int save_r20;
129: unsigned int save_r21;
130: unsigned int save_r22;
131: unsigned int save_r23;
132: unsigned int save_r24;
133: unsigned int save_r25;
134: unsigned int save_r26;
135: unsigned int save_r27;
136: unsigned int save_r28;
137: unsigned int save_r29;
138: unsigned int save_r30;
139: unsigned int save_r31;
140: #endif
141:
142: unsigned int active_kloaded; /* pointer to active_kloaded[CPU_NO] */
143: unsigned int cpu_data; /* pointer to cpu_data[CPU_NO] */
144: unsigned int active_stacks; /* pointer to active_stacks[CPU_NO] */
145: unsigned int need_ast; /* pointer to need_ast[CPU_NO] */
146: pcb_t fpu_pcb; /* pcb owning the fpu on this cpu */
147: };
148:
149: extern struct per_proc_info per_proc_info[NCPUS];
150:
151: extern char *trap_type[];
152:
153: #ifdef DEBUG
154: extern int kdp_trap_codes[];
155: #define kdp_code(x) kdp_trap_codes[((x)==EXC_AST?0x30:(x)/EXC_VECTOR_SIZE)]
156: #endif /* DEBUG */
157:
158: #endif /* ! __ASSEMBLER__ */
159:
160: #define EXC_VECTOR_SIZE 4 /* function pointer size */
161:
162: /* Hardware exceptions */
163:
164: #define EXC_INVALID (0x00 * EXC_VECTOR_SIZE)
165: #define EXC_RESET (0x01 * EXC_VECTOR_SIZE)
166: #define EXC_MACHINE_CHECK (0x02 * EXC_VECTOR_SIZE)
167: #define EXC_DATA_ACCESS (0x03 * EXC_VECTOR_SIZE)
168: #define EXC_INSTRUCTION_ACCESS (0x04 * EXC_VECTOR_SIZE)
169: #define EXC_INTERRUPT (0x05 * EXC_VECTOR_SIZE)
170: #define EXC_ALIGNMENT (0x06 * EXC_VECTOR_SIZE)
171: #define EXC_PROGRAM (0x07 * EXC_VECTOR_SIZE)
172: #define EXC_FP_UNAVAILABLE (0x08 * EXC_VECTOR_SIZE)
173: #define EXC_DECREMENTER (0x09 * EXC_VECTOR_SIZE)
174: #define EXC_IO_ERROR (0x0a * EXC_VECTOR_SIZE)
175: #define EXC_RESERVED_0B (0x0b * EXC_VECTOR_SIZE)
176: #define EXC_SYSTEM_CALL (0x0c * EXC_VECTOR_SIZE)
177: #define EXC_TRACE (0x0d * EXC_VECTOR_SIZE)
178: #define EXC_FP_ASSIST (0x0e * EXC_VECTOR_SIZE)
179: #define EXC_PERFORMANCE_MON (0x0f * EXC_VECTOR_SIZE)
180: #define EXC_603_IT_MISS (0x10 * EXC_VECTOR_SIZE)
181: #define EXC_603_DLT_MISS (0x11 * EXC_VECTOR_SIZE)
182: #define EXC_603_DST_MISS (0x12 * EXC_VECTOR_SIZE)
183: #define EXC_INSTRUCTION_BKPT (0x13 * EXC_VECTOR_SIZE)
184: #define EXC_SYSTEM_MANAGEMENT (0x14 * EXC_VECTOR_SIZE)
185: #define EXC_RESERVED_15 (0x15 * EXC_VECTOR_SIZE)
186: #define EXC_RESERVED_16 (0x16 * EXC_VECTOR_SIZE)
187: #define EXC_RESERVED_17 (0x17 * EXC_VECTOR_SIZE)
188: #define EXC_RESERVED_18 (0x18 * EXC_VECTOR_SIZE)
189: #define EXC_RESERVED_19 (0x19 * EXC_VECTOR_SIZE)
190: #define EXC_RESERVED_1A (0x1a * EXC_VECTOR_SIZE)
191: #define EXC_RESERVED_1B (0x1b * EXC_VECTOR_SIZE)
192: #define EXC_RESERVED_1C (0x1c * EXC_VECTOR_SIZE)
193: #define EXC_RESERVED_1D (0x1d * EXC_VECTOR_SIZE)
194: #define EXC_RESERVED_1E (0x1e * EXC_VECTOR_SIZE)
195: #define EXC_RESERVED_1F (0x1f * EXC_VECTOR_SIZE)
196: #define EXC_RUNMODE_TRACE (0x20 * EXC_VECTOR_SIZE) /* 601 only */
197: #define EXC_RESERVED_21 (0x21 * EXC_VECTOR_SIZE)
198: #define EXC_RESERVED_22 (0x22 * EXC_VECTOR_SIZE)
199: #define EXC_RESERVED_23 (0x23 * EXC_VECTOR_SIZE)
200: #define EXC_RESERVED_24 (0x24 * EXC_VECTOR_SIZE)
201: #define EXC_RESERVED_25 (0x25 * EXC_VECTOR_SIZE)
202: #define EXC_RESERVED_26 (0x26 * EXC_VECTOR_SIZE)
203: #define EXC_RESERVED_27 (0x27 * EXC_VECTOR_SIZE)
204: #define EXC_RESERVED_28 (0x28 * EXC_VECTOR_SIZE)
205: #define EXC_RESERVED_29 (0x29 * EXC_VECTOR_SIZE)
206: #define EXC_RESERVED_2A (0x2a * EXC_VECTOR_SIZE)
207: #define EXC_RESERVED_2B (0x2b * EXC_VECTOR_SIZE)
208: #define EXC_RESERVED_2C (0x2c * EXC_VECTOR_SIZE)
209: #define EXC_RESERVED_2D (0x2d * EXC_VECTOR_SIZE)
210: #define EXC_RESERVED_2E (0x2e * EXC_VECTOR_SIZE)
211: #define EXC_RESERVED_2F (0x2f * EXC_VECTOR_SIZE)
212:
213:
214: /* software exceptions */
215:
216: #define EXC_AST (0x100 * EXC_VECTOR_SIZE)
217: #define EXC_MAX EXC_RESERVED_2F /* Maximum exception no */
218:
219: #endif /* _PPC_EXCEPTION_H_ */
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