1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
/* $OpenBSD: db_machdep.h,v 1.13 2021/08/30 08:11:12 jasper Exp $ */
/* $NetBSD: db_machdep.h,v 1.5 2001/11/22 18:00:00 thorpej Exp $ */
/*
* Copyright (c) 1996 Scott K Stevens
*
* Mach Operating System
* Copyright (c) 1991,1990 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
#ifndef _ARM_DB_MACHDEP_H_
#define _ARM_DB_MACHDEP_H_
/*
* Machine-dependent defines for new kernel debugger.
*/
#include <uvm/uvm_extern.h>
#include <arm/armreg.h>
#include <machine/frame.h>
#include <machine/trap.h>
/* end of mangling */
typedef long db_expr_t; /* expression - signed */
typedef trapframe_t db_regs_t;
extern db_regs_t ddb_regs; /* register state */
#define PC_REGS(regs) ((vaddr_t)(regs)->tf_pc)
#define SET_PC_REGS(regs, value) (regs)->tf_pc = (register_t)(value)
#define BKPT_INST (KERNEL_BREAKPOINT) /* breakpoint instruction */
#define BKPT_SIZE (INSN_SIZE) /* size of breakpoint inst */
#define BKPT_SET(inst) (BKPT_INST)
/*#define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_pc -= BKPT_SIZE)*/
#define T_BREAKPOINT (1)
#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAKPOINT)
#define IS_WATCHPOINT_TRAP(type, code) (0)
#define inst_trap_return(ins) (0)
/* ldmxx reg, {..., pc}
01800000 stack mode
000f0000 register
0000ffff register list */
/* mov pc, reg
0000000f register */
#define inst_return(ins) (((ins) & 0x0e108000) == 0x08108000 || \
((ins) & 0x0ff0fff0) == 0x01a0f000)
/* bl ...
00ffffff offset>>2 */
#define inst_call(ins) (((ins) & 0x0f000000) == 0x0b000000)
/* b ...
00ffffff offset>>2 */
/* ldr pc, [pc, reg, lsl #2]
0000000f register */
#define inst_branch(ins) (((ins) & 0x0f000000) == 0x0a000000 || \
((ins) & 0x0fdffff0) == 0x079ff100)
#define inst_unconditional_flow_transfer(ins) \
((((ins) & INSN_COND_MASK) == INSN_COND_AL) && \
(inst_branch(ins) || inst_call(ins) || inst_return(ins)))
#define getreg_val (0)
#define next_instr_address(pc, bd) ((bd) ? (pc) : ((pc) + INSN_SIZE))
#define DB_MACHINE_COMMANDS
#define SOFTWARE_SSTEP
vaddr_t db_branch_taken(u_int inst, vaddr_t pc, db_regs_t *regs);
int db_ktrap (int, db_regs_t *);
void db_machine_init (void);
#define branch_taken(ins, pc, fun, regs) \
db_branch_taken((ins), (pc), (regs))
void db_show_frame_cmd(db_expr_t, int, db_expr_t, char *);
#endif /* _ARM_DB_MACHDEP_H_ */
|
