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 * $FreeBSD$
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 #define T_WATCHPOINT (2)
39 typedef vm_offset_t db_addr_t;
40 typedef int db_expr_t;
41
42 #define PC_REGS() ((db_addr_t)kdb_thrctx->pcb_regs.sf_pc)
43
44 #define BKPT_INST (KERNEL_BREAKPOINT)
45 #define BKPT_SIZE (INSN_SIZE)
46 #define BKPT_SET(inst) (BKPT_INST)
47
48 #define BKPT_SKIP do { \
49 kdb_frame->tf_pc += BKPT_SIZE; \
50 } while (0)
51
52 #define db_clear_single_step kdb_cpu_clear_singlestep
53 #define db_set_single_step kdb_cpu_set_singlestep
54 #define db_pc_is_singlestep kdb_cpu_pc_is_singlestep
55
56 #define IS_BREAKPOINT_TRAP(type, code) (type == T_BREAKPOINT)
57 #define IS_WATCHPOINT_TRAP(type, code) (type == T_WATCHPOINT)
58
59 #define inst_trap_return(ins) (0)
60 /* ldmxx reg, {..., pc}
61 01800000 stack mode
62 000f0000 register
63 0000ffff register list */
64 /* mov pc, reg
65 0000000f register */
66 #define inst_return(ins) (((ins) & 0x0e108000) == 0x08108000 || \
67 ((ins) & 0x0ff0fff0) == 0x01a0f000 || \
68 ((ins) & 0x0ffffff0) == 0x012fff10) /* bx */
69 /* bl ...
70 00ffffff offset>>2 */
71 #define inst_call(ins) (((ins) & 0x0f000000) == 0x0b000000)
72 /* b ...
73 00ffffff offset>>2 */
74 /* ldr pc, [pc, reg, lsl #2]
75 0000000f register */
76
77 #define inst_branch(ins) (((ins) & 0x0f000000) == 0x0a000000 || \
78 ((ins) & 0x0fdffff0) == 0x079ff100 || \
79 ((ins) & 0x0cd0f000) == 0x0490f000 || \
80 ((ins) & 0x0ffffff0) == 0x012fff30 || /* blx */ \
81 ((ins) & 0x0de0f000) == 0x0080f000)
82
83 #define inst_load(ins) (0)
84 #define inst_store(ins) (0)
85
86 #define next_instr_address(pc, bd) ((bd) ? (pc) : ((pc) + INSN_SIZE))
87
88 #define DB_ELFSIZE 32
89
90 int db_validate_address(vm_offset_t);
91
92 u_int branch_taken (u_int insn, db_addr_t pc);
93
94 #endif /* !_MACHINE_DB_MACHDEP_H_ */
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