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 Software.Distribution@CS.CMU.EDU
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.
25 *
26 * from: FreeBSD: src/sys/i386/include/db_machdep.h,v 1.16 1999/10/04
27 * $FreeBSD: src/sys/arm/include/db_machdep.h,v 1.9 2008/08/03 15:35:32 cognet Exp $
28 */
29
30 #ifndef _MACHINE_DB_MACHDEP_H_
31 #define _MACHINE_DB_MACHDEP_H_
32
33 #include <machine/frame.h>
34 #include <machine/trap.h>
35 #include <machine/armreg.h>
36
37 #define T_BREAKPOINT (1)
38 typedef vm_offset_t db_addr_t;
39 typedef int db_expr_t;
40
41 #define PC_REGS() ((db_addr_t)kdb_thrctx->un_32.pcb32_pc)
42
43 #define BKPT_INST (KERNEL_BREAKPOINT)
44 #define BKPT_SIZE (INSN_SIZE)
45 #define BKPT_SET(inst) (BKPT_INST)
46
47 #define BKPT_SKIP do { \
48 kdb_frame->tf_pc += BKPT_SIZE; \
49 } while (0)
50
51 #define SOFTWARE_SSTEP 1
52
53 #define IS_BREAKPOINT_TRAP(type, code) (type == T_BREAKPOINT)
54 #define IS_WATCHPOINT_TRAP(type, code) (0)
55
56
57 #define inst_trap_return(ins) (0)
58 /* ldmxx reg, {..., pc}
59 01800000 stack mode
60 000f0000 register
61 0000ffff register list */
62 /* mov pc, reg
63 0000000f register */
64 #define inst_return(ins) (((ins) & 0x0e108000) == 0x08108000 || \
65 ((ins) & 0x0ff0fff0) == 0x01a0f000 || \
66 ((ins) & 0x0ffffff0) == 0x012fff10) /* bx */
67 /* bl ...
68 00ffffff offset>>2 */
69 #define inst_call(ins) (((ins) & 0x0f000000) == 0x0b000000)
70 /* b ...
71 00ffffff offset>>2 */
72 /* ldr pc, [pc, reg, lsl #2]
73 0000000f register */
74
75 #define inst_branch(ins) (((ins) & 0x0f000000) == 0x0a000000 || \
76 ((ins) & 0x0fdffff0) == 0x079ff100 || \
77 ((ins) & 0x0cf0f000) == 0x0490f000 || \
78 ((ins) & 0x0ffffff0) == 0x012fff30 || /* blx */ \
79 ((ins) & 0x0de0f000) == 0x0080f000)
80
81 #define inst_load(ins) (0)
82 #define inst_store(ins) (0)
83
84 #define next_instr_address(pc, bd) ((bd) ? (pc) : ((pc) + INSN_SIZE))
85
86 #define DB_SMALL_VALUE_MAX (0x7fffffff)
87 #define DB_SMALL_VALUE_MIN (-0x40001)
88
89 #define DB_ELFSIZE 32
90
91 int db_validate_address(vm_offset_t);
92
93 u_int branch_taken (u_int insn, u_int pc);
94
95 #ifdef __ARMEB__
96 #define BYTE_MSF (1)
97 #endif
98 #endif /* !_MACHINE_DB_MACHDEP_H_ */
99 Cache object: 2b8d3865cc23edb395fdaaaabee0a202
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