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1.1 root 1: /*
2: * Mach Operating System
3: * Copyright (c) 1991,1990 Carnegie Mellon University
4: * All Rights Reserved.
5: *
6: * Permission to use, copy, modify and distribute this software and its
7: * documentation is hereby granted, provided that both the copyright
8: * notice and this permission notice appear in all copies of the
9: * software, derivative works or modified versions, and any portions
10: * thereof, and that both notices appear in supporting documentation.
11: *
12: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
13: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
14: * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
15: *
16: * Carnegie Mellon requests users of this software to return to
17: *
18: * Software Distribution Coordinator or [email protected]
19: * School of Computer Science
20: * Carnegie Mellon University
21: * Pittsburgh PA 15213-3890
22: *
23: * any improvements or extensions that they make and grant Carnegie Mellon
24: * the rights to redistribute these changes.
1.1.1.2 ! root 25: *
! 26: * db_machdep.h,v 1.2 1993/05/22 08:00:12 cgd Exp
1.1 root 27: */
28: /*
29: * HISTORY
1.1.1.2 ! root 30: * db_machdep.h,v
! 31: * Revision 1.2 1993/05/22 08:00:12 cgd
! 32: * add rcsids to everything and clean up headers
! 33: *
! 34: * Revision 1.1.1.1 1993/03/21 09:45:47 cgd
1.1 root 35: * initial import of 386bsd-0.1 sources
36: *
37: * Revision 2.8 92/02/19 15:07:56 elf
38: * Added db_thread_fp_used.
39: * [92/02/19 rpd]
40: *
41: * Revision 2.7 91/10/09 16:06:28 af
42: * Revision 2.6.3.1 91/10/05 13:10:32 jeffreyh
43: * Added access and task name macros.
44: * [91/08/29 tak]
45: *
46: * Revision 2.6.3.1 91/10/05 13:10:32 jeffreyh
47: * Added access and task name macros.
48: * [91/08/29 tak]
49: *
50: * Revision 2.6 91/05/14 16:05:58 mrt
51: * Correcting copyright
52: *
53: * Revision 2.5 91/02/05 17:11:17 mrt
54: * Changed to new Mach copyright
55: * [91/02/01 17:31:24 mrt]
56: *
57: * Revision 2.4 91/01/08 15:10:16 rpd
58: * Added dummy inst_load/inst_store macros.
59: * [90/12/11 rpd]
60: *
61: * Revision 2.3 90/10/25 14:44:49 rwd
62: * Added watchpoint support.
63: * [90/10/18 rpd]
64: *
65: * Revision 2.2 90/08/27 21:56:15 dbg
66: * Created.
67: * [90/07/25 dbg]
68: *
69: */
70:
71: #ifndef _I386_DB_MACHDEP_H_
72: #define _I386_DB_MACHDEP_H_
73:
74: /*
75: * Machine-dependent defines for new kernel debugger.
76: */
77:
78:
79: /* #include <mach/i386/vm_types.h> */
80: /* #include <mach/i386/vm_param.h> */
81: #include <vm/vm_prot.h>
82: #include <vm/vm_param.h>
83: #include <vm/vm_inherit.h>
84: #include <vm/lock.h>
85: /* #include <i386/thread.h> */ /* for thread_status */
86: #include <machine/frame.h> /* for struct trapframe */
87: /* #include <i386/eflags.h> */
88: #include <machine/eflags.h> /* from Mach... */
89: /* #include <i386/trap.h> */
90: #include <machine/trap.h>
91:
92: #define i386_saved_state trapframe
93: /* end of mangling */
94:
95: typedef vm_offset_t db_addr_t; /* address - unsigned */
96: typedef int db_expr_t; /* expression - signed */
97:
98: typedef struct i386_saved_state db_regs_t;
99: db_regs_t ddb_regs; /* register state */
100: #define DDB_REGS (&ddb_regs)
101:
102: #define PC_REGS(regs) ((db_addr_t)(regs)->tf_eip)
103:
104: #define BKPT_INST 0xcc /* breakpoint instruction */
105: #define BKPT_SIZE (1) /* size of breakpoint inst */
106: #define BKPT_SET(inst) (BKPT_INST)
107:
108: #define FIXUP_PC_AFTER_BREAK ddb_regs.tf_eip -= 1;
109:
110: #define db_clear_single_step(regs) ((regs)->tf_eflags &= ~EFL_TF)
111: #define db_set_single_step(regs) ((regs)->tf_eflags |= EFL_TF)
112:
113: /* #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_INT3) */
114: /* #define IS_WATCHPOINT_TRAP(type, code) ((type) == T_WATCHPOINT) */
115: /* using the 386bsd values, rather than the Mach ones: */
116: #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BPTFLT)
117: #define IS_WATCHPOINT_TRAP(type, code) ((type) == T_KDBTRAP)
118:
119: #define I_CALL 0xe8
120: #define I_CALLI 0xff
121: #define I_RET 0xc3
122: #define I_IRET 0xcf
123:
124: #define inst_trap_return(ins) (((ins)&0xff) == I_IRET)
125: #define inst_return(ins) (((ins)&0xff) == I_RET)
126: #define inst_call(ins) (((ins)&0xff) == I_CALL || \
127: (((ins)&0xff) == I_CALLI && \
128: ((ins)&0x3800) == 0x1000))
129: #define inst_load(ins) 0
130: #define inst_store(ins) 0
131:
132: /* access capability and access macros */
133:
134: #define DB_ACCESS_LEVEL 2 /* access any space */
135: #define DB_CHECK_ACCESS(addr,size,task) \
136: db_check_access(addr,size,task)
137: #define DB_PHYS_EQ(task1,addr1,task2,addr2) \
138: db_phys_eq(task1,addr1,task2,addr2)
139: #define DB_VALID_KERN_ADDR(addr) \
140: ((addr) >= VM_MIN_KERNEL_ADDRESS && \
141: (addr) < VM_MAX_KERNEL_ADDRESS)
142: #define DB_VALID_ADDRESS(addr,user) \
143: ((!(user) && DB_VALID_KERN_ADDR(addr)) || \
144: ((user) && (addr) < VM_MIN_KERNEL_ADDRESS))
145:
146: boolean_t db_check_access(/* vm_offset_t, int, task_t */);
147: boolean_t db_phys_eq(/* task_t, vm_offset_t, task_t, vm_offset_t */);
148:
149: /* macros for printing OS server dependent task name */
150:
151: #define DB_TASK_NAME(task) db_task_name(task)
152: #define DB_TASK_NAME_TITLE "COMMAND "
153: #define DB_TASK_NAME_LEN 23
154: #define DB_NULL_TASK_NAME "? "
155:
156: void db_task_name(/* task_t */);
157:
158: /* macro for checking if a thread has used floating-point */
159:
160: #define db_thread_fp_used(thread) ((thread)->pcb->ims.ifps != 0)
161:
162: #endif /* _I386_DB_MACHDEP_H_ */
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