1 /*
2 * Debugger x86_64 specific functions
3 *
4 * Copyright 2004 Vincent Béron
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "debugger.h"
22
23 #if defined(__x86_64__)
24
25 #define STEP_FLAG 0x00000100 /* single step flag */
26
27 static unsigned be_x86_64_get_addr(HANDLE hThread, const CONTEXT* ctx,
28 enum be_cpu_addr bca, ADDRESS64* addr)
29 {
30 addr->Mode = AddrModeFlat;
31 switch (bca)
32 {
33 case be_cpu_addr_pc:
34 addr->Segment = ctx->SegCs;
35 addr->Offset = ctx->Rip;
36 return TRUE;
37 case be_cpu_addr_stack:
38 addr->Segment = ctx->SegSs;
39 addr->Offset = ctx->Rsp;
40 return TRUE;
41 case be_cpu_addr_frame:
42 addr->Segment = ctx->SegSs;
43 addr->Offset = ctx->Rbp;
44 return TRUE;
45 default:
46 addr->Mode = -1;
47 return FALSE;
48 }
49 }
50
51 static unsigned be_x86_64_get_register_info(int regno, enum be_cpu_addr* kind)
52 {
53 /* this is true when running in 32bit mode... and wrong in 64 :-/ */
54 switch (regno)
55 {
56 case CV_AMD64_RIP: *kind = be_cpu_addr_pc; return TRUE;
57 case CV_AMD64_EBP: *kind = be_cpu_addr_frame; return TRUE;
58 case CV_AMD64_ESP: *kind = be_cpu_addr_stack; return TRUE;
59 }
60 return FALSE;
61 }
62
63 static void be_x86_64_single_step(CONTEXT* ctx, unsigned enable)
64 {
65 if (enable) ctx->EFlags |= STEP_FLAG;
66 else ctx->EFlags &= ~STEP_FLAG;
67 }
68
69 static void be_x86_64_print_context(HANDLE hThread, const CONTEXT* ctx,
70 int all_regs)
71 {
72 static const char flags[] = "aVR-N--ODITSZ-A-P-C";
73 char buf[33];
74 int i;
75
76 strcpy(buf, flags);
77 for (i = 0; buf[i]; i++)
78 if (buf[i] != '-' && !(ctx->EFlags & (1 << (sizeof(flags) - 2 - i))))
79 buf[i] = ' ';
80
81 dbg_printf("Register dump:\n");
82 dbg_printf(" rip:%016lx rsp:%016lx rbp:%016lx eflags:%08x (%s)\n",
83 ctx->Rip, ctx->Rsp, ctx->Rbp, ctx->EFlags, buf);
84 dbg_printf(" rax:%016lx rbx:%016lx rcx:%016lx rdx:%016lx\n",
85 ctx->Rax, ctx->Rbx, ctx->Rcx, ctx->Rdx);
86 dbg_printf(" rsi:%016lx rdi:%016lx r8:%016lx r9:%016lx r10:%016lx\n",
87 ctx->Rsi, ctx->Rdi, ctx->R8, ctx->R9, ctx->R10 );
88 dbg_printf(" r11:%016lx r12:%016lx r13:%016lx r14:%016lx r15:%016lx\n",
89 ctx->R11, ctx->R12, ctx->R13, ctx->R14, ctx->R15 );
90
91 if (all_regs) dbg_printf( "Floating point x86_64 dump not implemented\n" );
92 }
93
94 static void be_x86_64_print_segment_info(HANDLE hThread, const CONTEXT* ctx)
95 {
96 }
97
98 static struct dbg_internal_var be_x86_64_ctx[] =
99 {
100 {CV_AMD64_AL, "AL", (DWORD*)FIELD_OFFSET(CONTEXT, Rax), dbg_itype_unsigned_char_int},
101 {CV_AMD64_BL, "BL", (DWORD*)FIELD_OFFSET(CONTEXT, Rbx), dbg_itype_unsigned_char_int},
102 {CV_AMD64_CL, "CL", (DWORD*)FIELD_OFFSET(CONTEXT, Rcx), dbg_itype_unsigned_char_int},
103 {CV_AMD64_DL, "DL", (DWORD*)FIELD_OFFSET(CONTEXT, Rdx), dbg_itype_unsigned_char_int},
104 {CV_AMD64_AH, "AH", (DWORD*)(FIELD_OFFSET(CONTEXT, Rax)+1), dbg_itype_unsigned_char_int},
105 {CV_AMD64_BH, "BH", (DWORD*)(FIELD_OFFSET(CONTEXT, Rbx)+1), dbg_itype_unsigned_char_int},
106 {CV_AMD64_CH, "CH", (DWORD*)(FIELD_OFFSET(CONTEXT, Rcx)+1), dbg_itype_unsigned_char_int},
107 {CV_AMD64_DH, "DH", (DWORD*)(FIELD_OFFSET(CONTEXT, Rdx)+1), dbg_itype_unsigned_char_int},
108 {CV_AMD64_AX, "AX", (DWORD*)FIELD_OFFSET(CONTEXT, Rax), dbg_itype_unsigned_short_int},
109 {CV_AMD64_BX, "BX", (DWORD*)FIELD_OFFSET(CONTEXT, Rbx), dbg_itype_unsigned_short_int},
110 {CV_AMD64_CX, "CX", (DWORD*)FIELD_OFFSET(CONTEXT, Rcx), dbg_itype_unsigned_short_int},
111 {CV_AMD64_DX, "DX", (DWORD*)FIELD_OFFSET(CONTEXT, Rdx), dbg_itype_unsigned_short_int},
112 {CV_AMD64_SP, "SP", (DWORD*)FIELD_OFFSET(CONTEXT, Rsp), dbg_itype_unsigned_short_int},
113 {CV_AMD64_BP, "BP", (DWORD*)FIELD_OFFSET(CONTEXT, Rbp), dbg_itype_unsigned_short_int},
114 {CV_AMD64_SI, "SI", (DWORD*)FIELD_OFFSET(CONTEXT, Rsi), dbg_itype_unsigned_short_int},
115 {CV_AMD64_DI, "DI", (DWORD*)FIELD_OFFSET(CONTEXT, Rdi), dbg_itype_unsigned_short_int},
116 {CV_AMD64_EAX, "EAX", (DWORD*)FIELD_OFFSET(CONTEXT, Rax), dbg_itype_unsigned_int},
117 {CV_AMD64_EBX, "EBX", (DWORD*)FIELD_OFFSET(CONTEXT, Rbx), dbg_itype_unsigned_int},
118 {CV_AMD64_ECX, "ECX", (DWORD*)FIELD_OFFSET(CONTEXT, Rcx), dbg_itype_unsigned_int},
119 {CV_AMD64_EDX, "EDX", (DWORD*)FIELD_OFFSET(CONTEXT, Rdx), dbg_itype_unsigned_int},
120 {CV_AMD64_ESP, "ESP", (DWORD*)FIELD_OFFSET(CONTEXT, Rsp), dbg_itype_unsigned_int},
121 {CV_AMD64_EBP, "EBP", (DWORD*)FIELD_OFFSET(CONTEXT, Rbp), dbg_itype_unsigned_int},
122 {CV_AMD64_ESI, "ESI", (DWORD*)FIELD_OFFSET(CONTEXT, Rsi), dbg_itype_unsigned_int},
123 {CV_AMD64_EDI, "EDI", (DWORD*)FIELD_OFFSET(CONTEXT, Rdi), dbg_itype_unsigned_int},
124 {CV_AMD64_ES, "ES", (DWORD*)FIELD_OFFSET(CONTEXT, SegEs), dbg_itype_unsigned_short_int},
125 {CV_AMD64_CS, "CS", (DWORD*)FIELD_OFFSET(CONTEXT, SegCs), dbg_itype_unsigned_short_int},
126 {CV_AMD64_SS, "SS", (DWORD*)FIELD_OFFSET(CONTEXT, SegSs), dbg_itype_unsigned_short_int},
127 {CV_AMD64_DS, "DS", (DWORD*)FIELD_OFFSET(CONTEXT, SegDs), dbg_itype_unsigned_short_int},
128 {CV_AMD64_FS, "FS", (DWORD*)FIELD_OFFSET(CONTEXT, SegFs), dbg_itype_unsigned_short_int},
129 {CV_AMD64_GS, "GS", (DWORD*)FIELD_OFFSET(CONTEXT, SegGs), dbg_itype_unsigned_short_int},
130 {CV_AMD64_FLAGS, "FLAGS", (DWORD*)FIELD_OFFSET(CONTEXT, EFlags), dbg_itype_unsigned_short_int},
131 {CV_AMD64_EFLAGS, "EFLAGS", (DWORD*)FIELD_OFFSET(CONTEXT, EFlags), dbg_itype_unsigned_int},
132 {CV_AMD64_RIP, "RIP", (DWORD*)FIELD_OFFSET(CONTEXT, Rip), dbg_itype_unsigned_int},
133 {CV_AMD64_RAX, "RAX", (DWORD*)FIELD_OFFSET(CONTEXT, Rax), dbg_itype_unsigned_long_int},
134 {CV_AMD64_RBX, "RBX", (DWORD*)FIELD_OFFSET(CONTEXT, Rbx), dbg_itype_unsigned_long_int},
135 {CV_AMD64_RCX, "RCX", (DWORD*)FIELD_OFFSET(CONTEXT, Rcx), dbg_itype_unsigned_long_int},
136 {CV_AMD64_RDX, "RDX", (DWORD*)FIELD_OFFSET(CONTEXT, Rdx), dbg_itype_unsigned_long_int},
137 {CV_AMD64_RSP, "RSP", (DWORD*)FIELD_OFFSET(CONTEXT, Rsp), dbg_itype_unsigned_long_int},
138 {CV_AMD64_RBP, "RBP", (DWORD*)FIELD_OFFSET(CONTEXT, Rbp), dbg_itype_unsigned_long_int},
139 {CV_AMD64_RSI, "RSI", (DWORD*)FIELD_OFFSET(CONTEXT, Rsi), dbg_itype_unsigned_long_int},
140 {CV_AMD64_RDI, "RDI", (DWORD*)FIELD_OFFSET(CONTEXT, Rdi), dbg_itype_unsigned_long_int},
141 {CV_AMD64_R8, "R8", (DWORD*)FIELD_OFFSET(CONTEXT, R8), dbg_itype_unsigned_long_int},
142 {CV_AMD64_R9, "R9", (DWORD*)FIELD_OFFSET(CONTEXT, R9), dbg_itype_unsigned_long_int},
143 {CV_AMD64_R10, "R10", (DWORD*)FIELD_OFFSET(CONTEXT, R10), dbg_itype_unsigned_long_int},
144 {CV_AMD64_R11, "R11", (DWORD*)FIELD_OFFSET(CONTEXT, R11), dbg_itype_unsigned_long_int},
145 {CV_AMD64_R12, "R12", (DWORD*)FIELD_OFFSET(CONTEXT, R12), dbg_itype_unsigned_long_int},
146 {CV_AMD64_R13, "R13", (DWORD*)FIELD_OFFSET(CONTEXT, R13), dbg_itype_unsigned_long_int},
147 {CV_AMD64_R14, "R14", (DWORD*)FIELD_OFFSET(CONTEXT, R14), dbg_itype_unsigned_long_int},
148 {CV_AMD64_R15, "R15", (DWORD*)FIELD_OFFSET(CONTEXT, R15), dbg_itype_unsigned_long_int},
149 {0, NULL, 0, dbg_itype_none}
150 };
151
152 static const struct dbg_internal_var* be_x86_64_init_registers(CONTEXT* ctx)
153 {
154 struct dbg_internal_var* div;
155
156 for (div = be_x86_64_ctx; div->name; div++)
157 div->pval = (DWORD*)((char*)ctx + (DWORD_PTR)div->pval);
158 return be_x86_64_ctx;
159 }
160
161 static unsigned be_x86_64_is_step_over_insn(const void* insn)
162 {
163 dbg_printf("not done step_over_insn\n");
164 return FALSE;
165 }
166
167 static unsigned be_x86_64_is_function_return(const void* insn)
168 {
169 dbg_printf("not done is_function_return\n");
170 return FALSE;
171 }
172
173 static unsigned be_x86_64_is_break_insn(const void* insn)
174 {
175 dbg_printf("not done is_break_insn\n");
176 return FALSE;
177 }
178
179 static unsigned be_x86_64_is_func_call(const void* insn, ADDRESS64* callee)
180 {
181 dbg_printf("not done is_func_call\n");
182 return FALSE;
183 }
184
185 static void be_x86_64_disasm_one_insn(ADDRESS64* addr, int display)
186 {
187 dbg_printf("Disasm NIY\n");
188 }
189
190 static unsigned be_x86_64_insert_Xpoint(HANDLE hProcess, const struct be_process_io* pio,
191 CONTEXT* ctx, enum be_xpoint_type type,
192 void* addr, unsigned long* val, unsigned size)
193 {
194 dbg_printf("not done insert_Xpoint\n");
195 return 0;
196 }
197
198 static unsigned be_x86_64_remove_Xpoint(HANDLE hProcess, const struct be_process_io* pio,
199 CONTEXT* ctx, enum be_xpoint_type type,
200 void* addr, unsigned long val, unsigned size)
201 {
202 dbg_printf("not done remove_Xpoint\n");
203 return FALSE;
204 }
205
206 static unsigned be_x86_64_is_watchpoint_set(const CONTEXT* ctx, unsigned idx)
207 {
208 dbg_printf("not done is_watchpoint_set\n");
209 return FALSE;
210 }
211
212 static void be_x86_64_clear_watchpoint(CONTEXT* ctx, unsigned idx)
213 {
214 dbg_printf("not done clear_watchpoint\n");
215 }
216
217 static int be_x86_64_adjust_pc_for_break(CONTEXT* ctx, BOOL way)
218 {
219 if (way)
220 {
221 ctx->Rip--;
222 return -1;
223 }
224 ctx->Rip++;
225 return 1;
226 }
227
228 static int be_x86_64_fetch_integer(const struct dbg_lvalue* lvalue, unsigned size,
229 unsigned ext_sign, LONGLONG* ret)
230 {
231 dbg_printf("not done fetch_integer\n");
232 return FALSE;
233 }
234
235 static int be_x86_64_fetch_float(const struct dbg_lvalue* lvalue, unsigned size,
236 long double* ret)
237 {
238 dbg_printf("not done fetch_float\n");
239 return FALSE;
240 }
241
242 struct backend_cpu be_x86_64 =
243 {
244 be_cpu_linearize,
245 be_cpu_build_addr,
246 be_x86_64_get_addr,
247 be_x86_64_get_register_info,
248 be_x86_64_single_step,
249 be_x86_64_print_context,
250 be_x86_64_print_segment_info,
251 be_x86_64_init_registers,
252 be_x86_64_is_step_over_insn,
253 be_x86_64_is_function_return,
254 be_x86_64_is_break_insn,
255 be_x86_64_is_func_call,
256 be_x86_64_disasm_one_insn,
257 be_x86_64_insert_Xpoint,
258 be_x86_64_remove_Xpoint,
259 be_x86_64_is_watchpoint_set,
260 be_x86_64_clear_watchpoint,
261 be_x86_64_adjust_pc_for_break,
262 be_x86_64_fetch_integer,
263 be_x86_64_fetch_float,
264 };
265 #endif
266
This page was automatically generated by the
LXR engine.
Visit the LXR main site for more
information.