db_machdep.h revision 1.1 1 1.1 sakamoto /* $OpenBSD: db_machdep.h,v 1.2 1997/03/21 00:48:48 niklas Exp $ */
2 1.1 sakamoto /* $NetBSD: db_machdep.h,v 1.1 1997/10/14 06:48:14 sakamoto Exp $ */
3 1.1 sakamoto
4 1.1 sakamoto /*
5 1.1 sakamoto * Mach Operating System
6 1.1 sakamoto * Copyright (c) 1992 Carnegie Mellon University
7 1.1 sakamoto * All Rights Reserved.
8 1.1 sakamoto *
9 1.1 sakamoto * Permission to use, copy, modify and distribute this software and its
10 1.1 sakamoto * documentation is hereby granted, provided that both the copyright
11 1.1 sakamoto * notice and this permission notice appear in all copies of the
12 1.1 sakamoto * software, derivative works or modified versions, and any portions
13 1.1 sakamoto * thereof, and that both notices appear in supporting documentation.
14 1.1 sakamoto *
15 1.1 sakamoto * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
16 1.1 sakamoto * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
17 1.1 sakamoto * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
18 1.1 sakamoto *
19 1.1 sakamoto * Carnegie Mellon requests users of this software to return to
20 1.1 sakamoto *
21 1.1 sakamoto * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU
22 1.1 sakamoto * School of Computer Science
23 1.1 sakamoto * Carnegie Mellon University
24 1.1 sakamoto * Pittsburgh PA 15213-3890
25 1.1 sakamoto *
26 1.1 sakamoto * any improvements or extensions that they make and grant Carnegie Mellon
27 1.1 sakamoto * the rights to redistribute these changes.
28 1.1 sakamoto */
29 1.1 sakamoto
30 1.1 sakamoto /*
31 1.1 sakamoto * Machine-dependent defines for new kernel debugger.
32 1.1 sakamoto */
33 1.1 sakamoto #ifndef _PPC_DB_MACHDEP_H_
34 1.1 sakamoto #define _PPC_DB_MACHDEP_H_
35 1.1 sakamoto
36 1.1 sakamoto #include <vm/vm_prot.h>
37 1.1 sakamoto #include <vm/vm_param.h>
38 1.1 sakamoto #include <vm/vm_inherit.h>
39 1.1 sakamoto #include <machine/trap.h>
40 1.1 sakamoto
41 1.1 sakamoto #define DB_ELF_SYMBOLS
42 1.1 sakamoto #define DB_ELFSIZE 32
43 1.1 sakamoto
44 1.1 sakamoto typedef vm_offset_t db_addr_t; /* address - unsigned */
45 1.1 sakamoto typedef int db_expr_t; /* expression - signed */
46 1.1 sakamoto struct powerpc_saved_state {
47 1.1 sakamoto u_int32_t r0; /* data registers */
48 1.1 sakamoto u_int32_t r1;
49 1.1 sakamoto u_int32_t r2;
50 1.1 sakamoto u_int32_t r3;
51 1.1 sakamoto u_int32_t r4;
52 1.1 sakamoto u_int32_t r5;
53 1.1 sakamoto u_int32_t r6;
54 1.1 sakamoto u_int32_t r7;
55 1.1 sakamoto u_int32_t r8;
56 1.1 sakamoto u_int32_t r9;
57 1.1 sakamoto u_int32_t r10;
58 1.1 sakamoto u_int32_t r11;
59 1.1 sakamoto u_int32_t r12;
60 1.1 sakamoto u_int32_t r13;
61 1.1 sakamoto u_int32_t r14;
62 1.1 sakamoto u_int32_t r15;
63 1.1 sakamoto u_int32_t r16;
64 1.1 sakamoto u_int32_t r17;
65 1.1 sakamoto u_int32_t r18;
66 1.1 sakamoto u_int32_t r19;
67 1.1 sakamoto u_int32_t r20;
68 1.1 sakamoto u_int32_t r21;
69 1.1 sakamoto u_int32_t r22;
70 1.1 sakamoto u_int32_t r23;
71 1.1 sakamoto u_int32_t r24;
72 1.1 sakamoto u_int32_t r25;
73 1.1 sakamoto u_int32_t r26;
74 1.1 sakamoto u_int32_t r27;
75 1.1 sakamoto u_int32_t r28;
76 1.1 sakamoto u_int32_t r29;
77 1.1 sakamoto u_int32_t r30;
78 1.1 sakamoto u_int32_t r31;
79 1.1 sakamoto u_int32_t r32;
80 1.1 sakamoto u_int32_t iar;
81 1.1 sakamoto u_int32_t msr;
82 1.1 sakamoto };
83 1.1 sakamoto typedef struct powerpc_saved_state db_regs_t;
84 1.1 sakamoto db_regs_t ddb_regs; /* register state */
85 1.1 sakamoto #define DDB_REGS (&ddb_regs)
86 1.1 sakamoto
87 1.1 sakamoto #define PC_REGS(regs) ((db_addr_t)(regs)->iar)
88 1.1 sakamoto
89 1.1 sakamoto #define BKPT_INST 0x7C810808 /* breakpoint instruction */
90 1.1 sakamoto
91 1.1 sakamoto #define BKPT_SIZE (4) /* size of breakpoint inst */
92 1.1 sakamoto #define BKPT_SET(inst) (BKPT_INST)
93 1.1 sakamoto
94 1.1 sakamoto #define FIXUP_PC_AFTER_BREAK(regs) ((regs)->iar -= 4)
95 1.1 sakamoto
96 1.1 sakamoto #define SR_SINGLESTEP 0x400
97 1.1 sakamoto #define db_clear_single_step(regs) ((regs)->msr &= ~SR_SINGLESTEP)
98 1.1 sakamoto #define db_set_single_step(regs) ((regs)->msr |= SR_SINGLESTEP)
99 1.1 sakamoto
100 1.1 sakamoto #define T_BREAKPOINT 0xffff
101 1.1 sakamoto #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAKPOINT)
102 1.1 sakamoto
103 1.1 sakamoto #define T_WATCHPOINT 0xeeee
104 1.1 sakamoto #ifdef T_WATCHPOINT
105 1.1 sakamoto #define IS_WATCHPOINT_TRAP(type, code) ((type) == T_WATCHPOINT)
106 1.1 sakamoto #else
107 1.1 sakamoto #define IS_WATCHPOINT_TRAP(type, code) 0
108 1.1 sakamoto #endif
109 1.1 sakamoto
110 1.1 sakamoto #define M_RTS 0xfc0007fe
111 1.1 sakamoto #define I_RTS 0x4c000020
112 1.1 sakamoto #define M_BC 0xfc000000
113 1.1 sakamoto #define I_BC 0x40000000
114 1.1 sakamoto #define M_B 0xfc000000
115 1.1 sakamoto #define I_B 0x50000000
116 1.1 sakamoto #define M_RFI 0xfc0007fe
117 1.1 sakamoto #define I_RFI 0x4c000064
118 1.1 sakamoto
119 1.1 sakamoto #define inst_trap_return(ins) (((ins)&M_RFI) == I_RFI)
120 1.1 sakamoto #define inst_return(ins) (((ins)&M_RTS) == I_RTS)
121 1.1 sakamoto #define inst_call(ins) (((ins)&M_BC ) == I_BC || \
122 1.1 sakamoto ((ins)&M_B ) == I_B )
123 1.1 sakamoto #define inst_load(ins) 0
124 1.1 sakamoto #define inst_store(ins) 0
125 1.1 sakamoto
126 1.1 sakamoto #ifdef _KERNEL
127 1.1 sakamoto
128 1.1 sakamoto void kdb_kintr __P((void *));
129 1.1 sakamoto int kdb_trap __P((int, void *));
130 1.1 sakamoto
131 1.1 sakamoto #endif /* _KERNEL */
132 1.1 sakamoto
133 1.1 sakamoto #endif /* _PPC_DB_MACHDEP_H_ */
134