2 * Copyright (c) 2015 The FreeBSD Foundation
5 * This software was developed by Semihalf under
6 * the sponsorship of the FreeBSD Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
36 #include <vm/vm_map.h>
43 #include <ddb/db_variables.h>
45 #include <machine/cpu.h>
46 #include <machine/pcb.h>
47 #include <machine/stack.h>
48 #include <machine/vmparam.h>
51 db_frame(struct db_variable *vp, db_expr_t *valuep, int op)
55 if (kdb_frame == NULL)
58 reg = (long *)((uintptr_t)kdb_frame + (db_expr_t)vp->valuep);
66 #define DB_OFFSET(x) (db_expr_t *)offsetof(struct trapframe, x)
67 struct db_variable db_regs[] = {
68 { "spsr", DB_OFFSET(tf_spsr), db_frame },
69 { "x0", DB_OFFSET(tf_x[0]), db_frame },
70 { "x1", DB_OFFSET(tf_x[1]), db_frame },
71 { "x2", DB_OFFSET(tf_x[2]), db_frame },
72 { "x3", DB_OFFSET(tf_x[3]), db_frame },
73 { "x4", DB_OFFSET(tf_x[4]), db_frame },
74 { "x5", DB_OFFSET(tf_x[5]), db_frame },
75 { "x6", DB_OFFSET(tf_x[6]), db_frame },
76 { "x7", DB_OFFSET(tf_x[7]), db_frame },
77 { "x8", DB_OFFSET(tf_x[8]), db_frame },
78 { "x9", DB_OFFSET(tf_x[9]), db_frame },
79 { "x10", DB_OFFSET(tf_x[10]), db_frame },
80 { "x11", DB_OFFSET(tf_x[11]), db_frame },
81 { "x12", DB_OFFSET(tf_x[12]), db_frame },
82 { "x13", DB_OFFSET(tf_x[13]), db_frame },
83 { "x14", DB_OFFSET(tf_x[14]), db_frame },
84 { "x15", DB_OFFSET(tf_x[15]), db_frame },
85 { "x16", DB_OFFSET(tf_x[16]), db_frame },
86 { "x17", DB_OFFSET(tf_x[17]), db_frame },
87 { "x18", DB_OFFSET(tf_x[18]), db_frame },
88 { "x19", DB_OFFSET(tf_x[19]), db_frame },
89 { "x20", DB_OFFSET(tf_x[20]), db_frame },
90 { "x21", DB_OFFSET(tf_x[21]), db_frame },
91 { "x22", DB_OFFSET(tf_x[22]), db_frame },
92 { "x23", DB_OFFSET(tf_x[23]), db_frame },
93 { "x24", DB_OFFSET(tf_x[24]), db_frame },
94 { "x25", DB_OFFSET(tf_x[25]), db_frame },
95 { "x26", DB_OFFSET(tf_x[26]), db_frame },
96 { "x27", DB_OFFSET(tf_x[27]), db_frame },
97 { "x28", DB_OFFSET(tf_x[28]), db_frame },
98 { "x29", DB_OFFSET(tf_x[29]), db_frame },
99 { "lr", DB_OFFSET(tf_lr), db_frame },
100 { "elr", DB_OFFSET(tf_elr), db_frame },
101 { "sp", DB_OFFSET(tf_sp), db_frame },
104 struct db_variable *db_eregs = db_regs + nitems(db_regs);
107 db_show_mdpcpu(struct pcpu *pc)
112 * Read bytes from kernel address space for debugger.
115 db_read_bytes(vm_offset_t addr, size_t size, char *data)
125 prev_jb = kdb_jmpbuf(jb);
129 src = (const char *)addr;
130 if (size == 8 && (addr & 7) == 0) {
131 tmp64 = *((const int *)src);
132 src = (const char *)&tmp64;
133 } else if (size == 4 && (addr & 3) == 0) {
134 tmp32 = *((const int *)src);
135 src = (const char *)&tmp32;
136 } else if (size == 2 && (addr & 1) == 0) {
137 tmp16 = *((const short *)src);
138 src = (const char *)&tmp16;
143 (void)kdb_jmpbuf(prev_jb);
149 * Write bytes to kernel address space for debugger.
152 db_write_bytes(vm_offset_t addr, size_t size, char *data)
162 prev_jb = kdb_jmpbuf(jb);
165 if (size == 8 && (addr & 7) == 0) {
166 dst = (char *)&tmp64;
169 *((uint64_t *)addr) = tmp64;
170 } else if (size == 4 && (addr & 3) == 0) {
171 dst = (char *)&tmp32;
174 *((uint32_t *)addr) = tmp32;
175 } else if (size == 2 && (addr & 1) == 0) {
176 dst = (char *)&tmp16;
179 *((uint32_t *)addr) = tmp16;
187 /* Clean D-cache and invalidate I-cache */
188 cpu_dcache_wb_range(addr, (vm_size_t)size);
189 cpu_icache_sync_range(addr, (vm_size_t)size);
191 (void)kdb_jmpbuf(prev_jb);