1 /*
2 * Debugger Power PC specific functions
3 *
4 * Copyright 2000-2003 Marcus Meissner
5 * 2004 Eric Pouech
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
20 */
21
22 #include "debugger.h"
23
24 #if defined(__powerpc__)
25
26 static unsigned be_ppc_get_addr(HANDLE hThread, const CONTEXT* ctx,
27 enum be_cpu_addr bca, ADDRESS64* addr)
28 {
29 switch (bca)
30 {
31 case be_cpu_addr_pc:
32 return be_cpu_build_addr(hThread, ctx, addr, 0, ctx->Iar);
33 default:
34 case be_cpu_addr_stack:
35 case be_cpu_addr_frame:
36 dbg_printf("not done\n");
37 }
38 return FALSE;
39 }
40
41 static unsigned be_ppc_get_register_info(int regno, enum be_cpu_addr* kind)
42 {
43 dbg_printf("not done\n");
44 return FALSE;
45 }
46
47 static void be_ppc_single_step(CONTEXT* ctx, unsigned enable)
48 {
49 #ifndef MSR_SE
50 # define MSR_SE (1<<10)
51 #endif
52 if (enable) ctx->Msr |= MSR_SE;
53 else ctx->Msr &= ~MSR_SE;
54 }
55
56 static void be_ppc_print_context(HANDLE hThread, const CONTEXT* ctx, int all_regs)
57 {
58 dbg_printf("Context printing for PPC not done yet\n");
59 }
60
61 static void be_ppc_print_segment_info(HANDLE hThread, const CONTEXT* ctx)
62 {
63 }
64
65 static struct dbg_internal_var be_ppc_ctx[] =
66 {
67 {0, NULL, 0, dbg_itype_none}
68 };
69
70 static const struct dbg_internal_var* be_ppc_init_registers(CONTEXT* ctx)
71 {
72 dbg_printf("not done\n");
73 return be_ppc_ctx;
74 }
75
76 static unsigned be_ppc_is_step_over_insn(const void* insn)
77 {
78 dbg_printf("not done\n");
79 return FALSE;
80 }
81
82 static unsigned be_ppc_is_function_return(const void* insn)
83 {
84 dbg_printf("not done\n");
85 return FALSE;
86 }
87
88 static unsigned be_ppc_is_break_insn(const void* insn)
89 {
90 dbg_printf("not done\n");
91 return FALSE;
92 }
93
94 static unsigned be_ppc_is_func_call(const void* insn, ADDRESS64* callee)
95 {
96 return FALSE;
97 }
98
99 static void be_ppc_disasm_one_insn(ADDRESS64* addr, int display)
100 {
101 dbg_printf("Disasm NIY\n");
102 }
103
104 static unsigned be_ppc_insert_Xpoint(HANDLE hProcess, const struct be_process_io* pio,
105 CONTEXT* ctx, enum be_xpoint_type type,
106 void* addr, unsigned long* val, unsigned size)
107 {
108 unsigned long xbp;
109 SIZE_T sz;
110
111 switch (type)
112 {
113 case be_xpoint_break:
114 if (!size) return 0;
115 if (!pio->read(hProcess, addr, val, 4, &sz) || sz != 4) return 0;
116 xbp = 0x7d821008; /* 7d 82 10 08 ... in big endian */
117 if (!pio->write(hProcess, addr, &xbp, 4, &sz) || sz != 4) return 0;
118 break;
119 default:
120 dbg_printf("Unknown/unsupported bp type %c\n", type);
121 return 0;
122 }
123 return 1;
124 }
125
126 static unsigned be_ppc_remove_Xpoint(HANDLE hProcess, const struct be_process_io* pio,
127 CONTEXT* ctx, enum be_xpoint_type type,
128 void* addr, unsigned long val, unsigned size)
129 {
130 SIZE_T sz;
131
132 switch (type)
133 {
134 case be_xpoint_break:
135 if (!size) return 0;
136 if (!pio->write(hProcess, addr, &val, 4, &sz) || sz == 4) return 0;
137 break;
138 default:
139 dbg_printf("Unknown/unsupported bp type %c\n", type);
140 return 0;
141 }
142 return 1;
143 }
144
145 static unsigned be_ppc_is_watchpoint_set(const CONTEXT* ctx, unsigned idx)
146 {
147 dbg_printf("not done\n");
148 return FALSE;
149 }
150
151 static void be_ppc_clear_watchpoint(CONTEXT* ctx, unsigned idx)
152 {
153 dbg_printf("not done\n");
154 }
155
156 static int be_ppc_adjust_pc_for_break(CONTEXT* ctx, BOOL way)
157 {
158 dbg_printf("not done\n");
159 return 0;
160 }
161
162 static int be_ppc_fetch_integer(const struct dbg_lvalue* lvalue, unsigned size,
163 unsigned ext_sign, LONGLONG* ret)
164 {
165 dbg_printf("not done\n");
166 return FALSE;
167 }
168
169 static int be_ppc_fetch_float(const struct dbg_lvalue* lvalue, unsigned size,
170 long double* ret)
171 {
172 dbg_printf("not done\n");
173 return FALSE;
174 }
175
176 struct backend_cpu be_ppc =
177 {
178 be_cpu_linearize,
179 be_cpu_build_addr,
180 be_ppc_get_addr,
181 be_ppc_get_register_info,
182 be_ppc_single_step,
183 be_ppc_print_context,
184 be_ppc_print_segment_info,
185 be_ppc_init_registers,
186 be_ppc_is_step_over_insn,
187 be_ppc_is_function_return,
188 be_ppc_is_break_insn,
189 be_ppc_is_func_call,
190 be_ppc_disasm_one_insn,
191 be_ppc_insert_Xpoint,
192 be_ppc_remove_Xpoint,
193 be_ppc_is_watchpoint_set,
194 be_ppc_clear_watchpoint,
195 be_ppc_adjust_pc_for_break,
196 be_ppc_fetch_integer,
197 be_ppc_fetch_float,
198 };
199 #endif
200
This page was automatically generated by the
LXR engine.
Visit the LXR main site for more
information.