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qcap/tests: Add media tests for the SmartTee filter.
[wine/multimedia.git] / programs / winedbg / be_x86_64.c
blob17feb881a3f5e44e89576908753c4dfce3e46f1e
1 /*
2 * Debugger x86_64 specific functions
3 *
4 * Copyright 2004 Vincent Béron
5 * Copyright 2009 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 #define NONAMELESSUNION
23
24 #include "debugger.h"
25 #include "wine/debug.h"
26
27 #if defined(__x86_64__)
28
29 WINE_DEFAULT_DEBUG_CHANNEL(winedbg);
30
31 #define STEP_FLAG 0x00000100 /* single step flag */
32
33 static BOOL be_x86_64_get_addr(HANDLE hThread, const CONTEXT* ctx,
34 enum be_cpu_addr bca, ADDRESS64* addr)
35 {
36 addr->Mode = AddrModeFlat;
37 switch (bca)
38 {
39 case be_cpu_addr_pc:
40 addr->Segment = ctx->SegCs;
41 addr->Offset = ctx->Rip;
42 return TRUE;
43 case be_cpu_addr_stack:
44 addr->Segment = ctx->SegSs;
45 addr->Offset = ctx->Rsp;
46 return TRUE;
47 case be_cpu_addr_frame:
48 addr->Segment = ctx->SegSs;
49 addr->Offset = ctx->Rbp;
50 return TRUE;
51 default:
52 addr->Mode = -1;
53 return FALSE;
54 }
55 }
56
57 static BOOL be_x86_64_get_register_info(int regno, enum be_cpu_addr* kind)
58 {
59 /* this is true when running in 32bit mode... and wrong in 64 :-/ */
60 switch (regno)
61 {
62 case CV_AMD64_RIP: *kind = be_cpu_addr_pc; return TRUE;
63 case CV_AMD64_EBP: *kind = be_cpu_addr_frame; return TRUE;
64 case CV_AMD64_ESP: *kind = be_cpu_addr_stack; return TRUE;
65 }
66 return FALSE;
67 }
68
69 static void be_x86_64_single_step(CONTEXT* ctx, BOOL enable)
70 {
71 if (enable) ctx->EFlags |= STEP_FLAG;
72 else ctx->EFlags &= ~STEP_FLAG;
73 }
74
75 static inline long double m128a_to_longdouble(const M128A m)
76 {
77 /* gcc uses the same IEEE-754 representation as M128A for long double
78 * but 16 byte aligned (hence only the first 10 bytes out of the 16 are used)
79 */
80 return *(long double*)&m;
81 }
82
83 static void be_x86_64_print_context(HANDLE hThread, const CONTEXT* ctx,
84 int all_regs)
85 {
86 static const char mxcsr_flags[16][4] = { "IE", "DE", "ZE", "OE", "UE", "PE", "DAZ", "IM",
87 "DM", "ZM", "OM", "UM", "PM", "R-", "R+", "FZ" };
88 static const char flags[] = "aVR-N--ODITSZ-A-P-C";
89 char buf[33];
90 int i;
91
92 strcpy(buf, flags);
93 for (i = 0; buf[i]; i++)
94 if (buf[i] != '-' && !(ctx->EFlags & (1 << (sizeof(flags) - 2 - i))))
95 buf[i] = ' ';
96
97 dbg_printf("Register dump:\n");
98 dbg_printf(" rip:%016lx rsp:%016lx rbp:%016lx eflags:%08x (%s)\n",
99 ctx->Rip, ctx->Rsp, ctx->Rbp, ctx->EFlags, buf);
100 dbg_printf(" rax:%016lx rbx:%016lx rcx:%016lx rdx:%016lx\n",
101 ctx->Rax, ctx->Rbx, ctx->Rcx, ctx->Rdx);
102 dbg_printf(" rsi:%016lx rdi:%016lx r8:%016lx r9:%016lx r10:%016lx\n",
103 ctx->Rsi, ctx->Rdi, ctx->R8, ctx->R9, ctx->R10 );
104 dbg_printf(" r11:%016lx r12:%016lx r13:%016lx r14:%016lx r15:%016lx\n",
105 ctx->R11, ctx->R12, ctx->R13, ctx->R14, ctx->R15 );
106
107 if (!all_regs) return;
108
109 dbg_printf(" cs:%04x ds:%04x es:%04x fs:%04x gs:%04x ss:%04x\n",
110 ctx->SegCs, ctx->SegDs, ctx->SegEs, ctx->SegFs, ctx->SegGs, ctx->SegSs );
111
112 dbg_printf("Debug:\n");
113 dbg_printf(" dr0:%016lx dr1:%016lx dr2:%016lx dr3:%016lx\n",
114 ctx->Dr0, ctx->Dr1, ctx->Dr2, ctx->Dr3 );
115 dbg_printf(" dr6:%016lx dr7:%016lx\n", ctx->Dr6, ctx->Dr7 );
116
117 dbg_printf("Floating point:\n");
118 dbg_printf(" flcw:%04x ", LOWORD(ctx->u.FltSave.ControlWord));
119 dbg_printf(" fltw:%04x ", LOWORD(ctx->u.FltSave.TagWord));
120 dbg_printf(" flsw:%04x", LOWORD(ctx->u.FltSave.StatusWord));
121
122 dbg_printf("(cc:%d%d%d%d", (ctx->u.FltSave.StatusWord & 0x00004000) >> 14,
123 (ctx->u.FltSave.StatusWord & 0x00000400) >> 10,
124 (ctx->u.FltSave.StatusWord & 0x00000200) >> 9,
125 (ctx->u.FltSave.StatusWord & 0x00000100) >> 8);
126
127 dbg_printf(" top:%01x", (unsigned int) (ctx->u.FltSave.StatusWord & 0x00003800) >> 11);
128
129 if (ctx->u.FltSave.StatusWord & 0x00000001) /* Invalid Fl OP */
130 {
131 if (ctx->u.FltSave.StatusWord & 0x00000040) /* Stack Fault */
132 {
133 if (ctx->u.FltSave.StatusWord & 0x00000200) /* C1 says Overflow */
134 dbg_printf(" #IE(Stack Overflow)");
135 else
136 dbg_printf(" #IE(Stack Underflow)"); /* Underflow */
137 }
138 else dbg_printf(" #IE(Arithmetic error)"); /* Invalid Fl OP */
139 }
140 if (ctx->u.FltSave.StatusWord & 0x00000002) dbg_printf(" #DE"); /* Denormalised OP */
141 if (ctx->u.FltSave.StatusWord & 0x00000004) dbg_printf(" #ZE"); /* Zero Divide */
142 if (ctx->u.FltSave.StatusWord & 0x00000008) dbg_printf(" #OE"); /* Overflow */
143 if (ctx->u.FltSave.StatusWord & 0x00000010) dbg_printf(" #UE"); /* Underflow */
144 if (ctx->u.FltSave.StatusWord & 0x00000020) dbg_printf(" #PE"); /* Precision error */
145 if (ctx->u.FltSave.StatusWord & 0x00000040)
146 if (!(ctx->u.FltSave.StatusWord & 0x00000001))
147 dbg_printf(" #SE"); /* Stack Fault (don't think this can occur) */
148 if (ctx->u.FltSave.StatusWord & 0x00000080) dbg_printf(" #ES"); /* Error Summary */
149 if (ctx->u.FltSave.StatusWord & 0x00008000) dbg_printf(" #FB"); /* FPU Busy */
150 dbg_printf(")\n");
151 dbg_printf(" flerr:%04x:%08x fldata:%04x:%08x\n",
152 ctx->u.FltSave.ErrorSelector, ctx->u.FltSave.ErrorOffset,
153 ctx->u.FltSave.DataSelector, ctx->u.FltSave.DataOffset );
154
155 for (i = 0; i < 4; i++)
156 {
157 dbg_printf(" st%u:%-16Lg ", i, m128a_to_longdouble(ctx->u.FltSave.FloatRegisters[i]));
158 }
159 dbg_printf("\n");
160 for (i = 4; i < 8; i++)
161 {
162 dbg_printf(" st%u:%-16Lg ", i, m128a_to_longdouble(ctx->u.FltSave.FloatRegisters[i]));
163 }
164 dbg_printf("\n");
165
166 dbg_printf(" mxcsr: %04x (", ctx->u.FltSave.MxCsr );
167 for (i = 0; i < 16; i++)
168 if (ctx->u.FltSave.MxCsr & (1 << i)) dbg_printf( " %s", mxcsr_flags[i] );
169 dbg_printf(" )\n");
170
171 for (i = 0; i < 16; i++)
172 {
173 dbg_printf( " %sxmm%u: uint=%016lx%016lx", (i > 9) ? "" : " ", i,
174 ctx->u.FltSave.XmmRegisters[i].High, ctx->u.FltSave.XmmRegisters[i].Low );
175 dbg_printf( " double={%g; %g}", *(double *)&ctx->u.FltSave.XmmRegisters[i].Low,
176 *(double *)&ctx->u.FltSave.XmmRegisters[i].High );
177 dbg_printf( " float={%g; %g; %g; %g}\n",
178 (double)*((float *)&ctx->u.FltSave.XmmRegisters[i] + 0),
179 (double)*((float *)&ctx->u.FltSave.XmmRegisters[i] + 1),
180 (double)*((float *)&ctx->u.FltSave.XmmRegisters[i] + 2),
181 (double)*((float *)&ctx->u.FltSave.XmmRegisters[i] + 3) );
182 }
183 }
184
185 static void be_x86_64_print_segment_info(HANDLE hThread, const CONTEXT* ctx)
186 {
187 }
188
189 static struct dbg_internal_var be_x86_64_ctx[] =
190 {
191 {CV_AMD64_AL, "AL", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rax), dbg_itype_unsigned_char_int},
192 {CV_AMD64_BL, "BL", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rbx), dbg_itype_unsigned_char_int},
193 {CV_AMD64_CL, "CL", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rcx), dbg_itype_unsigned_char_int},
194 {CV_AMD64_DL, "DL", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rdx), dbg_itype_unsigned_char_int},
195 {CV_AMD64_AH, "AH", (DWORD_PTR*)(FIELD_OFFSET(CONTEXT, Rax)+1), dbg_itype_unsigned_char_int},
196 {CV_AMD64_BH, "BH", (DWORD_PTR*)(FIELD_OFFSET(CONTEXT, Rbx)+1), dbg_itype_unsigned_char_int},
197 {CV_AMD64_CH, "CH", (DWORD_PTR*)(FIELD_OFFSET(CONTEXT, Rcx)+1), dbg_itype_unsigned_char_int},
198 {CV_AMD64_DH, "DH", (DWORD_PTR*)(FIELD_OFFSET(CONTEXT, Rdx)+1), dbg_itype_unsigned_char_int},
199 {CV_AMD64_AX, "AX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rax), dbg_itype_unsigned_short_int},
200 {CV_AMD64_BX, "BX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rbx), dbg_itype_unsigned_short_int},
201 {CV_AMD64_CX, "CX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rcx), dbg_itype_unsigned_short_int},
202 {CV_AMD64_DX, "DX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rdx), dbg_itype_unsigned_short_int},
203 {CV_AMD64_SP, "SP", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rsp), dbg_itype_unsigned_short_int},
204 {CV_AMD64_BP, "BP", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rbp), dbg_itype_unsigned_short_int},
205 {CV_AMD64_SI, "SI", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rsi), dbg_itype_unsigned_short_int},
206 {CV_AMD64_DI, "DI", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rdi), dbg_itype_unsigned_short_int},
207 {CV_AMD64_EAX, "EAX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rax), dbg_itype_unsigned_int},
208 {CV_AMD64_EBX, "EBX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rbx), dbg_itype_unsigned_int},
209 {CV_AMD64_ECX, "ECX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rcx), dbg_itype_unsigned_int},
210 {CV_AMD64_EDX, "EDX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rdx), dbg_itype_unsigned_int},
211 {CV_AMD64_ESP, "ESP", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rsp), dbg_itype_unsigned_int},
212 {CV_AMD64_EBP, "EBP", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rbp), dbg_itype_unsigned_int},
213 {CV_AMD64_ESI, "ESI", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rsi), dbg_itype_unsigned_int},
214 {CV_AMD64_EDI, "EDI", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rdi), dbg_itype_unsigned_int},
215 {CV_AMD64_ES, "ES", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, SegEs), dbg_itype_unsigned_short_int},
216 {CV_AMD64_CS, "CS", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, SegCs), dbg_itype_unsigned_short_int},
217 {CV_AMD64_SS, "SS", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, SegSs), dbg_itype_unsigned_short_int},
218 {CV_AMD64_DS, "DS", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, SegDs), dbg_itype_unsigned_short_int},
219 {CV_AMD64_FS, "FS", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, SegFs), dbg_itype_unsigned_short_int},
220 {CV_AMD64_GS, "GS", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, SegGs), dbg_itype_unsigned_short_int},
221 {CV_AMD64_FLAGS, "FLAGS", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, EFlags), dbg_itype_unsigned_short_int},
222 {CV_AMD64_EFLAGS, "EFLAGS", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, EFlags), dbg_itype_unsigned_int},
223 {CV_AMD64_RIP, "RIP", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rip), dbg_itype_unsigned_long_int},
224 {CV_AMD64_RAX, "RAX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rax), dbg_itype_unsigned_long_int},
225 {CV_AMD64_RBX, "RBX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rbx), dbg_itype_unsigned_long_int},
226 {CV_AMD64_RCX, "RCX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rcx), dbg_itype_unsigned_long_int},
227 {CV_AMD64_RDX, "RDX", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rdx), dbg_itype_unsigned_long_int},
228 {CV_AMD64_RSP, "RSP", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rsp), dbg_itype_unsigned_long_int},
229 {CV_AMD64_RBP, "RBP", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rbp), dbg_itype_unsigned_long_int},
230 {CV_AMD64_RSI, "RSI", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rsi), dbg_itype_unsigned_long_int},
231 {CV_AMD64_RDI, "RDI", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, Rdi), dbg_itype_unsigned_long_int},
232 {CV_AMD64_R8, "R8", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R8), dbg_itype_unsigned_long_int},
233 {CV_AMD64_R9, "R9", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R9), dbg_itype_unsigned_long_int},
234 {CV_AMD64_R10, "R10", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R10), dbg_itype_unsigned_long_int},
235 {CV_AMD64_R11, "R11", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R11), dbg_itype_unsigned_long_int},
236 {CV_AMD64_R12, "R12", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R12), dbg_itype_unsigned_long_int},
237 {CV_AMD64_R13, "R13", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R13), dbg_itype_unsigned_long_int},
238 {CV_AMD64_R14, "R14", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R14), dbg_itype_unsigned_long_int},
239 {CV_AMD64_R15, "R15", (DWORD_PTR*)FIELD_OFFSET(CONTEXT, R15), dbg_itype_unsigned_long_int},
240 {0, NULL, 0, dbg_itype_none}
241 };
242
243 #define f_mod(b) ((b)>>6)
244 #define f_reg(b) (((b)>>3)&0x7)
245 #define f_rm(b) ((b)&0x7)
246
247 static BOOL be_x86_64_is_step_over_insn(const void* insn)
248 {
249 BYTE ch;
250
251 for (;;)
252 {
253 if (!dbg_read_memory(insn, &ch, sizeof(ch))) return FALSE;
254
255 switch (ch)
256 {
257 /* Skip all prefixes */
258 case 0x2e: /* cs: */
259 case 0x36: /* ss: */
260 case 0x3e: /* ds: */
261 case 0x26: /* es: */
262 case 0x64: /* fs: */
263 case 0x65: /* gs: */
264 case 0x66: /* opcode size prefix */
265 case 0x67: /* addr size prefix */
266 case 0xf0: /* lock */
267 case 0xf2: /* repne */
268 case 0xf3: /* repe */
269 insn = (const char*)insn + 1;
270 continue;
271
272 /* Handle call instructions */
273 case 0xcd: /* int <intno> */
274 case 0xe8: /* call <offset> */
275 case 0x9a: /* lcall <seg>:<off> */
276 return TRUE;
277
278 case 0xff: /* call <regmodrm> */
279 if (!dbg_read_memory((const char*)insn + 1, &ch, sizeof(ch)))
280 return FALSE;
281 return (((ch & 0x38) == 0x10) || ((ch & 0x38) == 0x18));
282
283 /* Handle string instructions */
284 case 0x6c: /* insb */
285 case 0x6d: /* insw */
286 case 0x6e: /* outsb */
287 case 0x6f: /* outsw */
288 case 0xa4: /* movsb */
289 case 0xa5: /* movsw */
290 case 0xa6: /* cmpsb */
291 case 0xa7: /* cmpsw */
292 case 0xaa: /* stosb */
293 case 0xab: /* stosw */
294 case 0xac: /* lodsb */
295 case 0xad: /* lodsw */
296 case 0xae: /* scasb */
297 case 0xaf: /* scasw */
298 return TRUE;
299
300 default:
301 return FALSE;
302 }
303 }
304 }
305
306 static BOOL be_x86_64_is_function_return(const void* insn)
307 {
308 BYTE c;
309
310 /* sigh... amd64 for prefetch optimization requires 'rep ret' in some cases */
311 if (!dbg_read_memory(insn, &c, sizeof(c))) return FALSE;
312 if (c == 0xF3) /* REP */
313 {
314 insn = (const char*)insn + 1;
315 if (!dbg_read_memory(insn, &c, sizeof(c))) return FALSE;
316 }
317 return c == 0xC2 /* ret */ || c == 0xC3 /* ret NN */;
318 }
319
320 static BOOL be_x86_64_is_break_insn(const void* insn)
321 {
322 BYTE c;
323 return dbg_read_memory(insn, &c, sizeof(c)) && c == 0xCC;
324 }
325
326 static BOOL fetch_value(const char* addr, unsigned sz, int* value)
327 {
328 char value8;
329 short value16;
330
331 switch (sz)
332 {
333 case 8:
334 if (!dbg_read_memory(addr, &value8, sizeof(value8))) return FALSE;
335 *value = value8;
336 break;
337 case 16:
338 if (!dbg_read_memory(addr, &value16, sizeof(value16))) return FALSE;
339 *value = value16;
340 case 32:
341 if (!dbg_read_memory(addr, value, sizeof(*value))) return FALSE;
342 break;
343 default: return FALSE;
344 }
345 return TRUE;
346 }
347
348 static BOOL be_x86_64_is_func_call(const void* insn, ADDRESS64* callee)
349 {
350 BYTE ch;
351 LONG delta;
352 unsigned op_size = 32, rex = 0;
353 DWORD64 dst;
354
355 /* we assume 64bit mode all over the place */
356 for (;;)
357 {
358 if (!dbg_read_memory(insn, &ch, sizeof(ch))) return FALSE;
359 if (ch == 0x66) op_size = 16;
360 else if (ch == 0x67) WINE_FIXME("prefix not supported %x\n", ch);
361 else if (ch >= 0x40 && ch <= 0x4f) rex = ch & 0xf;
362 else break;
363 insn = (const char*)insn + 1;
364 } while (0);
365
366 /* that's the only mode we support anyway */
367 callee->Mode = AddrModeFlat;
368 callee->Segment = dbg_context.SegCs;
369
370 switch (ch)
371 {
372 case 0xe8: /* relative near call */
373 assert(op_size == 32);
374 if (!fetch_value((const char*)insn + 1, sizeof(delta), &delta))
375 return FALSE;
376 callee->Offset = (DWORD_PTR)insn + 1 + 4 + delta;
377 return TRUE;
378
379 case 0xff:
380 if (!dbg_read_memory((const char*)insn + 1, &ch, sizeof(ch)))
381 return FALSE;
382 WINE_TRACE("Got 0xFF %x (&C7=%x) with rex=%x\n", ch, ch & 0xC7, rex);
383 /* keep only the CALL and LCALL insn:s */
384 switch (f_reg(ch))
385 {
386 case 0x02:
387 break;
388 default: return FALSE;
389 }
390 if (rex == 0) switch (ch & 0xC7) /* keep Mod R/M only (skip reg) */
391 {
392 case 0x04:
393 case 0x44:
394 case 0x84:
395 WINE_FIXME("Unsupported yet call insn (0xFF 0x%02x) (SIB bytes) at %p\n", ch, insn);
396 return FALSE;
397 case 0x05: /* addr32 */
398 if (f_reg(ch) == 0x2)
399 {
400 /* rip-relative to next insn */
401 if (!dbg_read_memory((const char*)insn + 2, &delta, sizeof(delta)) ||
402 !dbg_read_memory((const char*)insn + 6 + delta, &dst, sizeof(dst)))
403 return FALSE;
404
405 callee->Offset = dst;
406 return TRUE;
407 }
408 WINE_FIXME("Unsupported yet call insn (0xFF 0x%02x) at %p\n", ch, insn);
409 return FALSE;
410 default:
411 switch (f_rm(ch))
412 {
413 case 0x00: dst = dbg_context.Rax; break;
414 case 0x01: dst = dbg_context.Rcx; break;
415 case 0x02: dst = dbg_context.Rdx; break;
416 case 0x03: dst = dbg_context.Rbx; break;
417 case 0x04: dst = dbg_context.Rsp; break;
418 case 0x05: dst = dbg_context.Rbp; break;
419 case 0x06: dst = dbg_context.Rsi; break;
420 case 0x07: dst = dbg_context.Rdi; break;
421 }
422 if (f_mod(ch) != 0x03)
423 WINE_FIXME("Unsupported yet call insn (0xFF 0x%02x) at %p\n", ch, insn);
424 else
425 {
426 callee->Offset = dst;
427 }
428 break;
429 }
430 else
431 WINE_FIXME("Unsupported yet call insn (rex=0x%02x 0xFF 0x%02x) at %p\n", rex, ch, insn);
432 return FALSE;
433
434 default:
435 return FALSE;
436 }
437 }
438
439 static BOOL be_x86_64_is_jump(const void* insn, ADDRESS64* jumpee)
440 {
441 return FALSE;
442 }
443
444 extern void be_x86_64_disasm_one_insn(ADDRESS64* addr, int display);
445
446 #define DR7_CONTROL_SHIFT 16
447 #define DR7_CONTROL_SIZE 4
448
449 #define DR7_RW_EXECUTE (0x0)
450 #define DR7_RW_WRITE (0x1)
451 #define DR7_RW_READ (0x3)
452
453 #define DR7_LEN_1 (0x0)
454 #define DR7_LEN_2 (0x4)
455 #define DR7_LEN_4 (0xC)
456 #define DR7_LEN_8 (0x8)
457
458 #define DR7_LOCAL_ENABLE_SHIFT 0
459 #define DR7_GLOBAL_ENABLE_SHIFT 1
460 #define DR7_ENABLE_SIZE 2
461
462 #define DR7_LOCAL_ENABLE_MASK (0x55)
463 #define DR7_GLOBAL_ENABLE_MASK (0xAA)
464
465 #define DR7_CONTROL_RESERVED (0xFC00)
466 #define DR7_LOCAL_SLOWDOWN (0x100)
467 #define DR7_GLOBAL_SLOWDOWN (0x200)
468
469 #define DR7_ENABLE_MASK(dr) (1<<(DR7_LOCAL_ENABLE_SHIFT+DR7_ENABLE_SIZE*(dr)))
470 #define IS_DR7_SET(ctrl,dr) ((ctrl)&DR7_ENABLE_MASK(dr))
471
472 static inline int be_x86_64_get_unused_DR(CONTEXT* ctx, DWORD64** r)
473 {
474 if (!IS_DR7_SET(ctx->Dr7, 0))
475 {
476 *r = &ctx->Dr0;
477 return 0;
478 }
479 if (!IS_DR7_SET(ctx->Dr7, 1))
480 {
481 *r = &ctx->Dr1;
482 return 1;
483 }
484 if (!IS_DR7_SET(ctx->Dr7, 2))
485 {
486 *r = &ctx->Dr2;
487 return 2;
488 }
489 if (!IS_DR7_SET(ctx->Dr7, 3))
490 {
491 *r = &ctx->Dr3;
492 return 3;
493 }
494 dbg_printf("All hardware registers have been used\n");
495
496 return -1;
497 }
498
499 static BOOL be_x86_64_insert_Xpoint(HANDLE hProcess, const struct be_process_io* pio,
500 CONTEXT* ctx, enum be_xpoint_type type,
501 void* addr, unsigned long* val, unsigned size)
502 {
503 unsigned char ch;
504 SIZE_T sz;
505 DWORD64 *pr;
506 int reg;
507 unsigned long bits;
508
509 switch (type)
510 {
511 case be_xpoint_break:
512 if (size != 0) return FALSE;
513 if (!pio->read(hProcess, addr, &ch, 1, &sz) || sz != 1) return FALSE;
514 *val = ch;
515 ch = 0xcc;
516 if (!pio->write(hProcess, addr, &ch, 1, &sz) || sz != 1) return FALSE;
517 break;
518 case be_xpoint_watch_exec:
519 bits = DR7_RW_EXECUTE;
520 goto hw_bp;
521 case be_xpoint_watch_read:
522 bits = DR7_RW_READ;
523 goto hw_bp;
524 case be_xpoint_watch_write:
525 bits = DR7_RW_WRITE;
526 hw_bp:
527 if ((reg = be_x86_64_get_unused_DR(ctx, &pr)) == -1) return FALSE;
528 *pr = (DWORD64)addr;
529 if (type != be_xpoint_watch_exec) switch (size)
530 {
531 case 8: bits |= DR7_LEN_8; break;
532 case 4: bits |= DR7_LEN_4; break;
533 case 2: bits |= DR7_LEN_2; break;
534 case 1: bits |= DR7_LEN_1; break;
535 default: WINE_FIXME("Unsupported xpoint_watch of size %d\n", size); return FALSE;
536 }
537 *val = reg;
538 /* clear old values */
539 ctx->Dr7 &= ~(0x0F << (DR7_CONTROL_SHIFT + DR7_CONTROL_SIZE * reg));
540 /* set the correct ones */
541 ctx->Dr7 |= bits << (DR7_CONTROL_SHIFT + DR7_CONTROL_SIZE * reg);
542 ctx->Dr7 |= DR7_ENABLE_MASK(reg) | DR7_LOCAL_SLOWDOWN;
543 break;
544 default:
545 dbg_printf("Unknown bp type %c\n", type);
546 return FALSE;
547 }
548 return TRUE;
549 }
550
551 static BOOL be_x86_64_remove_Xpoint(HANDLE hProcess, const struct be_process_io* pio,
552 CONTEXT* ctx, enum be_xpoint_type type,
553 void* addr, unsigned long val, unsigned size)
554 {
555 SIZE_T sz;
556 unsigned char ch;
557
558 switch (type)
559 {
560 case be_xpoint_break:
561 if (size != 0) return FALSE;
562 if (!pio->read(hProcess, addr, &ch, 1, &sz) || sz != 1) return FALSE;
563 if (ch != (unsigned char)0xCC)
564 WINE_FIXME("Cannot get back %02x instead of 0xCC at %p\n", ch, addr);
565 ch = (unsigned char)val;
566 if (!pio->write(hProcess, addr, &ch, 1, &sz) || sz != 1) return FALSE;
567 break;
568 case be_xpoint_watch_exec:
569 case be_xpoint_watch_read:
570 case be_xpoint_watch_write:
571 /* simply disable the entry */
572 ctx->Dr7 &= ~DR7_ENABLE_MASK(val);
573 break;
574 default:
575 dbg_printf("Unknown bp type %c\n", type);
576 return FALSE;
577 }
578 return TRUE;
579 }
580
581 static BOOL be_x86_64_is_watchpoint_set(const CONTEXT* ctx, unsigned idx)
582 {
583 return ctx->Dr6 & (1 << idx);
584 }
585
586 static void be_x86_64_clear_watchpoint(CONTEXT* ctx, unsigned idx)
587 {
588 ctx->Dr6 &= ~(1 << idx);
589 }
590
591 static int be_x86_64_adjust_pc_for_break(CONTEXT* ctx, BOOL way)
592 {
593 if (way)
594 {
595 ctx->Rip--;
596 return -1;
597 }
598 ctx->Rip++;
599 return 1;
600 }
601
602 static BOOL be_x86_64_fetch_integer(const struct dbg_lvalue* lvalue, unsigned size,
603 BOOL is_signed, LONGLONG* ret)
604 {
605 if (size != 1 && size != 2 && size != 4 && size != 8 && size != 16)
606 return FALSE;
607
608 memset(ret, 0, sizeof(*ret)); /* clear unread bytes */
609 /* FIXME: this assumes that debuggee and debugger use the same
610 * integral representation
611 */
612 if (!memory_read_value(lvalue, size, ret)) return FALSE;
613
614 /* propagate sign information */
615 if (is_signed && size < 16 && (*ret >> (size * 8 - 1)) != 0)
616 {
617 ULONGLONG neg = -1;
618 *ret |= neg << (size * 8);
619 }
620 return TRUE;
621 }
622
623 static BOOL be_x86_64_fetch_float(const struct dbg_lvalue* lvalue, unsigned size,
624 long double* ret)
625 {
626 char tmp[sizeof(long double)];
627
628 /* FIXME: this assumes that debuggee and debugger use the same
629 * representation for reals
630 */
631 if (!memory_read_value(lvalue, size, tmp)) return FALSE;
632
633 /* float & double types have to be promoted to a long double */
634 if (size == sizeof(float)) *ret = *(float*)tmp;
635 else if (size == sizeof(double)) *ret = *(double*)tmp;
636 else if (size == sizeof(long double)) *ret = *(long double*)tmp;
637 else return FALSE;
638
639 return TRUE;
640 }
641
642 static BOOL be_x86_64_store_integer(const struct dbg_lvalue* lvalue, unsigned size,
643 BOOL is_signed, LONGLONG val)
644 {
645 /* this is simple as we're on a little endian CPU */
646 return memory_write_value(lvalue, size, &val);
647 }
648
649 struct backend_cpu be_x86_64 =
650 {
651 IMAGE_FILE_MACHINE_AMD64,
652 8,
653 be_cpu_linearize,
654 be_cpu_build_addr,
655 be_x86_64_get_addr,
656 be_x86_64_get_register_info,
657 be_x86_64_single_step,
658 be_x86_64_print_context,
659 be_x86_64_print_segment_info,
660 be_x86_64_ctx,
661 be_x86_64_is_step_over_insn,
662 be_x86_64_is_function_return,
663 be_x86_64_is_break_insn,
664 be_x86_64_is_func_call,
665 be_x86_64_is_jump,
666 be_x86_64_disasm_one_insn,
667 be_x86_64_insert_Xpoint,
668 be_x86_64_remove_Xpoint,
669 be_x86_64_is_watchpoint_set,
670 be_x86_64_clear_watchpoint,
671 be_x86_64_adjust_pc_for_break,
672 be_x86_64_fetch_integer,
673 be_x86_64_fetch_float,
674 be_x86_64_store_integer,
675 };
676 #endif
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