db_machdep.h (b626f5a73a48f44a31a200291b141e1da408a2ff) db_machdep.h (d52d6d7ca734cbac90837a7e29462510483b3af2)
1/*-
1/*-
2 * Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com>
2 * Copyright (c) 2015-2016 Ruslan Bukin <br@bsdpad.com>
3 * All rights reserved.
4 *
5 * Portions of this software were developed by SRI International and the
6 * University of Cambridge Computer Laboratory under DARPA/AFRL contract
7 * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
8 *
9 * Portions of this software were developed by the University of Cambridge
10 * Computer Laboratory as part of the CTSRD Project, with support from the

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36
37#ifndef _MACHINE_DB_MACHDEP_H_
38#define _MACHINE_DB_MACHDEP_H_
39
40#include <machine/riscvreg.h>
41#include <machine/frame.h>
42#include <machine/trap.h>
43
3 * All rights reserved.
4 *
5 * Portions of this software were developed by SRI International and the
6 * University of Cambridge Computer Laboratory under DARPA/AFRL contract
7 * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
8 *
9 * Portions of this software were developed by the University of Cambridge
10 * Computer Laboratory as part of the CTSRD Project, with support from the

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36
37#ifndef _MACHINE_DB_MACHDEP_H_
38#define _MACHINE_DB_MACHDEP_H_
39
40#include <machine/riscvreg.h>
41#include <machine/frame.h>
42#include <machine/trap.h>
43
44#define T_BREAKPOINT (EXCP_INSTR_BREAKPOINT)
45#define T_WATCHPOINT (0)
46
44typedef vm_offset_t db_addr_t;
45typedef long db_expr_t;
46
47typedef vm_offset_t db_addr_t;
48typedef long db_expr_t;
49
50#define PC_REGS() ((db_addr_t)kdb_thrctx->pcb_sepc)
51
52#define BKPT_INST (0x00100073)
53#define BKPT_SIZE (INSN_SIZE)
54#define BKPT_SET(inst) (BKPT_INST)
55
56#define BKPT_SKIP do { \
57 kdb_frame->tf_sepc += BKPT_SIZE; \
58} while (0)
59
60#define db_clear_single_step kdb_cpu_clear_singlestep
61#define db_set_single_step kdb_cpu_set_singlestep
62
63#define IS_BREAKPOINT_TRAP(type, code) (type == T_BREAKPOINT)
64#define IS_WATCHPOINT_TRAP(type, code) (type == T_WATCHPOINT)
65
66#define inst_trap_return(ins) (ins == 0x10000073) /* eret */
67#define inst_return(ins) (ins == 0x00008067) /* ret */
68#define inst_call(ins) (((ins) & 0x7f) == 111 || \
69 ((ins) & 0x7f) == 103) /* jal, jalr */
70
71#define inst_load(ins) ({ \
72 uint32_t tmp_instr = db_get_value(PC_REGS(), sizeof(uint32_t), FALSE); \
73 is_load_instr(tmp_instr); \
74})
75
76#define inst_store(ins) ({ \
77 uint32_t tmp_instr = db_get_value(PC_REGS(), sizeof(uint32_t), FALSE); \
78 is_store_instr(tmp_instr); \
79})
80
81#define is_load_instr(ins) (((ins) & 0x7f) == 3)
82#define is_store_instr(ins) (((ins) & 0x7f) == 35)
83
84#define next_instr_address(pc, bd) ((bd) ? (pc) : ((pc) + 4))
85
86#define DB_SMALL_VALUE_MAX (0x7fffffff)
87#define DB_SMALL_VALUE_MIN (-0x40001)
88
89#define DB_ELFSIZE 64
90
47#endif /* !_MACHINE_DB_MACHDEP_H_ */
91#endif /* !_MACHINE_DB_MACHDEP_H_ */