1 /*
2 * Debugger ARM specific functions
3 *
4 * Copyright 2000-2003 Marcus Meissner
5 * 2004 Eric Pouech
6 * 2010 André Hentschel
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
21 */
22
23 #include "debugger.h"
24
25 #if defined(__arm__)
26
27 static unsigned be_arm_get_addr(HANDLE hThread, const CONTEXT* ctx,
28 enum be_cpu_addr bca, ADDRESS64* addr)
29 {
30 switch (bca)
31 {
32 case be_cpu_addr_pc:
33 return be_cpu_build_addr(hThread, ctx, addr, 0, ctx->Pc);
34 case be_cpu_addr_stack:
35 return be_cpu_build_addr(hThread, ctx, addr, 0, ctx->Sp);
36 case be_cpu_addr_frame:
37 return be_cpu_build_addr(hThread, ctx, addr, 0, ctx->Fp);
38 }
39 return FALSE;
40 }
41
42 static unsigned be_arm_get_register_info(int regno, enum be_cpu_addr* kind)
43 {
44 dbg_printf("not done\n");
45 return FALSE;
46 }
47
48 static void be_arm_single_step(CONTEXT* ctx, unsigned enable)
49 {
50 dbg_printf("not done\n");
51 }
52
53 static void be_arm_print_context(HANDLE hThread, const CONTEXT* ctx, int all_regs)
54 {
55 dbg_printf("Context printing for arm not done yet\n");
56 }
57
58 static void be_arm_print_segment_info(HANDLE hThread, const CONTEXT* ctx)
59 {
60 }
61
62 static struct dbg_internal_var be_arm_ctx[] =
63 {
64 {0, NULL, 0, dbg_itype_none}
65 };
66
67 static unsigned be_arm_is_step_over_insn(const void* insn)
68 {
69 dbg_printf("not done\n");
70 return FALSE;
71 }
72
73 static unsigned be_arm_is_function_return(const void* insn)
74 {
75 dbg_printf("not done\n");
76 return FALSE;
77 }
78
79 static unsigned be_arm_is_break_insn(const void* insn)
80 {
81 dbg_printf("not done\n");
82 return FALSE;
83 }
84
85 static unsigned be_arm_is_func_call(const void* insn, ADDRESS64* callee)
86 {
87 return FALSE;
88 }
89
90 static unsigned be_arm_is_jump(const void* insn, ADDRESS64* jumpee)
91 {
92 return FALSE;
93 }
94
95 static void be_arm_disasm_one_insn(ADDRESS64* addr, int display)
96 {
97 dbg_printf("Disasm NIY\n");
98 }
99
100 static unsigned be_arm_insert_Xpoint(HANDLE hProcess, const struct be_process_io* pio,
101 CONTEXT* ctx, enum be_xpoint_type type,
102 void* addr, unsigned long* val, unsigned size)
103 {
104 SIZE_T sz;
105
106 switch (type)
107 {
108 case be_xpoint_break:
109 if (!size) return 0;
110 if (!pio->read(hProcess, addr, val, 4, &sz) || sz != 4) return 0;
111 default:
112 dbg_printf("Unknown/unsupported bp type %c\n", type);
113 return 0;
114 }
115 return 1;
116 }
117
118 static unsigned be_arm_remove_Xpoint(HANDLE hProcess, const struct be_process_io* pio,
119 CONTEXT* ctx, enum be_xpoint_type type,
120 void* addr, unsigned long val, unsigned size)
121 {
122 SIZE_T sz;
123
124 switch (type)
125 {
126 case be_xpoint_break:
127 if (!size) return 0;
128 if (!pio->write(hProcess, addr, &val, 4, &sz) || sz == 4) return 0;
129 break;
130 default:
131 dbg_printf("Unknown/unsupported bp type %c\n", type);
132 return 0;
133 }
134 return 1;
135 }
136
137 static unsigned be_arm_is_watchpoint_set(const CONTEXT* ctx, unsigned idx)
138 {
139 dbg_printf("not done\n");
140 return FALSE;
141 }
142
143 static void be_arm_clear_watchpoint(CONTEXT* ctx, unsigned idx)
144 {
145 dbg_printf("not done\n");
146 }
147
148 static int be_arm_adjust_pc_for_break(CONTEXT* ctx, BOOL way)
149 {
150 if (way)
151 {
152 ctx->Pc--;
153 return -1;
154 }
155 ctx->Pc++;
156 return 1;
157 }
158
159 static int be_arm_fetch_integer(const struct dbg_lvalue* lvalue, unsigned size,
160 unsigned ext_sign, LONGLONG* ret)
161 {
162 dbg_printf("not done\n");
163 return FALSE;
164 }
165
166 static int be_arm_fetch_float(const struct dbg_lvalue* lvalue, unsigned size,
167 long double* ret)
168 {
169 dbg_printf("not done\n");
170 return FALSE;
171 }
172
173 struct backend_cpu be_arm =
174 {
175 IMAGE_FILE_MACHINE_ARM,
176 4,
177 be_cpu_linearize,
178 be_cpu_build_addr,
179 be_arm_get_addr,
180 be_arm_get_register_info,
181 be_arm_single_step,
182 be_arm_print_context,
183 be_arm_print_segment_info,
184 be_arm_ctx,
185 be_arm_is_step_over_insn,
186 be_arm_is_function_return,
187 be_arm_is_break_insn,
188 be_arm_is_func_call,
189 be_arm_is_jump,
190 be_arm_disasm_one_insn,
191 be_arm_insert_Xpoint,
192 be_arm_remove_Xpoint,
193 be_arm_is_watchpoint_set,
194 be_arm_clear_watchpoint,
195 be_arm_adjust_pc_for_break,
196 be_arm_fetch_integer,
197 be_arm_fetch_float,
198 };
199 #endif
200
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