Annotation of sys/arch/hppa/include/db_machdep.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: db_machdep.h,v 1.15 2005/04/19 15:23:07 miod Exp $ */
2:
3: /*
4: * Copyright (c) 1998-2004 Michael Shalayeff
5: * All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: *
16: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19: * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
20: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22: * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
25: * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
26: * THE POSSIBILITY OF SUCH DAMAGE.
27: */
28:
29: #ifndef _MACHINE_DB_MACHDEP_H_
30: #define _MACHINE_DB_MACHDEP_H_
31:
32: #include <uvm/uvm_extern.h>
33:
34: #define DB_ELF_SYMBOLS
35: #define DB_ELFSIZE 32
36:
37: /* types the generic ddb module needs */
38: typedef vaddr_t db_addr_t;
39: typedef long db_expr_t;
40:
41: typedef struct trapframe db_regs_t;
42: extern db_regs_t ddb_regs;
43: #define DDB_REGS (&ddb_regs)
44:
45: #define PC_REGS(regs) ((db_addr_t)(regs)->tf_iioq_head)
46: #define SET_PC_REGS(regs, value) \
47: do { \
48: (regs)->tf_iioq_tail = 4 + \
49: ((regs)->tf_iioq_head = (value)); \
50: } while (0)
51:
52: /* Breakpoint related definitions */
53: #define BKPT_INST 0x00010000 /* break 0,8 */
54: #define BKPT_SIZE sizeof(int)
55: #define BKPT_SET(inst) BKPT_INST
56:
57: #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_IBREAK)
58: #define IS_WATCHPOINT_TRAP(type, code) ((type) == T_DBREAK)
59:
60: #define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_iioq_head -= sizeof(int))
61:
62: #define DB_VALID_BREAKPOINT(addr) db_valid_breakpoint(addr)
63:
64: static __inline int inst_call(u_int ins) {
65: return (ins & 0xfc00e000) == 0xe8000000 ||
66: (ins & 0xfc00e000) == 0xe8004000 ||
67: (ins & 0xfc000000) == 0xe4000000;
68: }
69: static __inline int inst_branch(u_int ins) {
70: return (ins & 0xf0000000) == 0xe0000000 ||
71: (ins & 0xf0000000) == 0xc0000000 ||
72: (ins & 0xf0000000) == 0xa0000000 ||
73: (ins & 0xf0000000) == 0x80000000;
74: }
75: static __inline int inst_load(u_int ins) {
76: return (ins & 0xf0000000) == 0x40000000 ||
77: (ins & 0xf4000200) == 0x24000000 ||
78: (ins & 0xfc000200) == 0x0c000000 ||
79: (ins & 0xfc001fc0) != 0x0c0011c0;
80: }
81: static __inline int inst_store(u_int ins) {
82: return (ins & 0xf0000000) == 0x60000000 || /* st */
83: (ins & 0xf4000200) == 0x24000200 || /* fst/cst */
84: (ins & 0xfc000200) == 0x0c000200 || /* stby */
85: (ins & 0xfc0003c0) == 0x0c0001c0; /* ldcw */
86: }
87: static __inline int inst_return(u_int ins) {
88: return (ins & 0xfc00e000) == 0xe800c000 ||
89: (ins & 0xfc000000) == 0xe0000000;
90: }
91: static __inline int inst_trap_return(u_int ins) {
92: return (ins & 0xfc001fc0) == 0x00000ca0;
93: }
94:
95: #if 0
96: #define db_clear_single_step(r) ((r)->tf_flags &= ~(PSL_Z))
97: #define db_set_single_step(r) ((r)->tf_flags |= (PSL_Z))
98: #else
99: #define SOFTWARE_SSTEP 1
100: #define SOFTWARE_SSTEP_EMUL 1
101:
102: static __inline db_addr_t
103: next_instr_address(db_addr_t addr, int b) {
104: return (addr + 4);
105: }
106:
107: #define branch_taken(ins,pc,f,regs) branch_taken1(ins, pc, regs)
108: static __inline db_addr_t
109: branch_taken1(int ins, db_addr_t pc, db_regs_t *regs) {
110: return (pc);
111: }
112:
113: #endif
114:
115: int db_valid_breakpoint(db_addr_t);
116: int kdb_trap(int, int, db_regs_t *);
117:
118: #endif /* _MACHINE_DB_MACHDEP_H_ */
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