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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /*
23: * @OSF_COPYRIGHT@
24: */
25: /*
26: * Mach Operating System
27: * Copyright (c) 1991,1990 Carnegie Mellon University
28: * All Rights Reserved.
29: *
30: * Permission to use, copy, modify and distribute this software and its
31: * documentation is hereby granted, provided that both the copyright
32: * notice and this permission notice appear in all copies of the
33: * software, derivative works or modified versions, and any portions
34: * thereof, and that both notices appear in supporting documentation.
35: *
36: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
37: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
38: * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
39: *
40: * Carnegie Mellon requests users of this software to return to
41: *
42: * Software Distribution Coordinator or [email protected]
43: * School of Computer Science
44: * Carnegie Mellon University
45: * Pittsburgh PA 15213-3890
46: *
47: * any improvements or extensions that they make and grant Carnegie Mellon
48: * the rights to redistribute these changes.
49: */
50: /*
51: */
52:
53: #ifndef _PPC_DB_MACHDEP_H_
54: #define _PPC_DB_MACHDEP_H_
55:
56: /*
57: * Machine-dependent defines for new kernel debugger.
58: */
59:
60: #include <kern/kern_types.h>
61: #include <mach/ppc/vm_types.h>
62: #include <mach/ppc/vm_param.h>
63: #include <ppc/thread.h> /* for thread_status */
64: #include <ppc/trap.h>
65: #include <ppc/proc_reg.h>
66:
67: typedef vm_offset_t db_addr_t; /* address - unsigned */
68: typedef int db_expr_t; /* expression - signed */
69:
70: typedef struct ppc_saved_state db_regs_t;
71: db_regs_t ddb_regs; /* register state */
72: #define DDB_REGS (&ddb_regs)
73: extern int db_active; /* ddb is active */
74:
75: #define PC_REGS(regs) ((db_addr_t)(regs)->srr0)
76:
77: #define BKPT_INST 0x7c810808 /* breakpoint instruction */
78: #define BKPT_SIZE (4) /* size of breakpoint inst */
79: #define BKPT_SET(inst) (BKPT_INST)
80:
81: #define db_clear_single_step(regs) ((regs)->srr1 &= ~MASK(MSR_SE))
82: #define db_set_single_step(regs) ((regs)->srr1 |= MASK(MSR_SE))
83:
84: #define IS_BREAKPOINT_TRAP(type, code) (FALSE)
85: #define IS_WATCHPOINT_TRAP(type, code) (FALSE)
86:
87: #define inst_trap_return(ins) (FALSE)
88: #define inst_return(ins) (FALSE)
89: #define inst_call(ins) (FALSE)
90:
91: int db_inst_load(unsigned long);
92: int db_inst_store(unsigned long);
93:
94: /* access capability and access macros */
95:
96: #define DB_ACCESS_LEVEL DB_ACCESS_ANY /* any space */
97: #define DB_CHECK_ACCESS(addr,size,task) \
98: db_check_access(addr,size,task)
99: #define DB_PHYS_EQ(task1,addr1,task2,addr2) \
100: db_phys_eq(task1,addr1,task2,addr2)
101: #define DB_VALID_KERN_ADDR(addr) \
102: ((addr) >= VM_MIN_KERNEL_ADDRESS && \
103: (addr) < VM_MAX_KERNEL_ADDRESS)
104: #define DB_VALID_ADDRESS(addr,user) \
105: ((!(user) && DB_VALID_KERN_ADDR(addr)) || \
106: ((user) && (addr) < VM_MAX_ADDRESS))
107:
108: /*
109: * Given pointer to ppc_saved_state, determine if it represents
110: * a thread executing a) in user space, b) in the kernel, or c)
111: * in a kernel-loaded task. Return true for cases a) and c).
112: */
113: #define IS_USER_TRAP(regs) \
114: (USER_MODE(regs->srr1))
115:
116: extern boolean_t db_check_access(
117: vm_offset_t addr,
118: int size,
119: task_t task);
120: extern boolean_t db_phys_eq(
121: task_t task1,
122: vm_offset_t addr1,
123: task_t task2,
124: vm_offset_t addr2);
125: extern db_addr_t db_disasm(
126: db_addr_t loc,
127: boolean_t altfmt,
128: task_t task);
129: extern vm_offset_t db_kvtophys(
130: space_t space,
131: vm_offset_t va);
132:
133: extern void db_read_bytes(
134: vm_offset_t addr,
135: int size,
136: char *data,
137: task_t task);
138: extern void db_write_bytes(
139: vm_offset_t addr,
140: int size,
141: char *data,
142: task_t task);
143: extern void db_stack_trace_cmd(
144: db_expr_t addr,
145: boolean_t have_addr,
146: db_expr_t count,
147: char *modif);
148: extern void db_reboot(
149: db_expr_t addr,
150: boolean_t have_addr,
151: db_expr_t count,
152: char *modif);
153: extern void db_low_trace(
154: db_expr_t addr,
155: int have_addr,
156: db_expr_t count,
157: char *modif);
158: extern void db_to_gdb(
159: void);
160:
161:
162: /* macros for printing OS server dependent task name */
163:
164: #define DB_TASK_NAME(task) db_task_name(task)
165: #define DB_TASK_NAME_TITLE "COMMAND "
166: #define DB_TASK_NAME_LEN 39
167: #define DB_NULL_TASK_NAME "? "
168:
169: extern void db_task_name(
170: task_t task);
171:
172: /* macro for checking if a thread has used floating-point */
173:
174: #define db_act_fp_used(act) (FALSE)
175:
176: extern void kdb_trap(
177: int type,
178: struct ppc_saved_state *regs);
179: extern boolean_t db_trap_from_asm(
180: struct ppc_saved_state *regs);
181: extern void kdb_on(
182: int cpu);
183: extern void cnpollc(
184: boolean_t on);
185:
186: extern void kdb_kintr(void);
187:
188: extern void db_phys_copy(
189: vm_offset_t,
190: vm_offset_t,
191: vm_size_t);
192:
193: extern boolean_t db_phys_cmp(
194: vm_offset_t,
195: vm_offset_t,
196: vm_size_t);
197:
198: #endif /* _PPC_DB_MACHDEP_H_ */
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