2 * Debugger memory handling
4 * Copyright 1993 Eric Youngdale
5 * Copyright 1995 Alexandre Julliard
6 * Copyright 2000-2004 Eric Pouech
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.
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.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #include "wine/port.h"
31 #include "wine/debug.h"
33 WINE_DEFAULT_DEBUG_CHANNEL(winedbg
);
35 void* be_cpu_linearize(HANDLE hThread
, const ADDRESS
* addr
)
37 assert(addr
->Mode
== AddrModeFlat
);
38 return (void*)addr
->Offset
;
41 unsigned be_cpu_build_addr(HANDLE hThread
, const CONTEXT
* ctx
, ADDRESS
* addr
,
42 unsigned seg
, unsigned long offset
)
44 addr
->Mode
= AddrModeFlat
;
45 addr
->Segment
= 0; /* don't need segment */
46 addr
->Offset
= offset
;
50 void* memory_to_linear_addr(const ADDRESS
* addr
)
52 return be_cpu
->linearize(dbg_curr_thread
->handle
, addr
);
55 BOOL
memory_get_current_pc(ADDRESS
* addr
)
57 assert(be_cpu
->get_addr
);
58 return be_cpu
->get_addr(dbg_curr_thread
->handle
, &dbg_context
,
59 be_cpu_addr_pc
, addr
);
62 BOOL
memory_get_current_stack(ADDRESS
* addr
)
64 assert(be_cpu
->get_addr
);
65 return be_cpu
->get_addr(dbg_curr_thread
->handle
, &dbg_context
,
66 be_cpu_addr_stack
, addr
);
69 BOOL
memory_get_current_frame(ADDRESS
* addr
)
71 assert(be_cpu
->get_addr
);
72 return be_cpu
->get_addr(dbg_curr_thread
->handle
, &dbg_context
,
73 be_cpu_addr_frame
, addr
);
76 void memory_report_invalid_addr(const void* addr
)
80 address
.Mode
= AddrModeFlat
;
82 address
.Offset
= (unsigned long)addr
;
83 dbg_printf("*** Invalid address ");
84 print_address(&address
, FALSE
);
88 /***********************************************************************
91 * Read a memory value.
93 BOOL
memory_read_value(const struct dbg_lvalue
* lvalue
, DWORD size
, void* result
)
95 if (lvalue
->cookie
== DLV_TARGET
)
97 if (!dbg_read_memory_verbose(memory_to_linear_addr(&lvalue
->addr
), result
, size
))
102 if (!lvalue
->addr
.Offset
) return FALSE
;
103 memcpy(result
, (void*)lvalue
->addr
.Offset
, size
);
108 /***********************************************************************
111 * Store a value in memory.
113 BOOL
memory_write_value(const struct dbg_lvalue
* lvalue
, DWORD size
, void* value
)
117 DWORD linear
= (DWORD
)memory_to_linear_addr(&lvalue
->addr
);
120 types_get_info(&lvalue
->type
, TI_GET_LENGTH
, &os
);
123 /* FIXME: only works on little endian systems */
124 if (lvalue
->cookie
== DLV_TARGET
)
126 ret
= dbg_write_memory_verbose((void*)linear
, value
, size
);
130 memcpy((void*)lvalue
->addr
.Offset
, value
, size
);
135 /***********************************************************************
138 * Implementation of the 'x' command.
140 void memory_examine(void* linear
, int count
, char format
)
146 addr
.Mode
= AddrModeFlat
;
147 addr
.Offset
= (unsigned long)linear
;
149 if (format
!= 'i' && count
> 1)
151 print_address(&addr
, FALSE
);
158 if (count
== 1) count
= 256;
159 memory_get_string(dbg_curr_process
->handle
, linear
,
160 TRUE
, TRUE
, buffer
, min(count
, sizeof(buffer
)));
161 dbg_printf("%s\n", buffer
);
164 if (count
== 1) count
= 256;
165 memory_get_string(dbg_curr_process
->handle
, linear
,
166 TRUE
, FALSE
, buffer
, min(count
, sizeof(buffer
)));
167 dbg_printf("%s\n", buffer
);
170 while (count
-- && memory_disasm_one_insn(&addr
));
176 if (!dbg_read_memory_verbose(linear
, &guid
, sizeof(guid
))) break;
177 dbg_printf("{%08lx-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}\n",
178 guid
.Data1
, guid
.Data2
, guid
.Data3
,
179 guid
.Data4
[0], guid
.Data4
[1], guid
.Data4
[2], guid
.Data4
[3],
180 guid
.Data4
[4], guid
.Data4
[5], guid
.Data4
[6], guid
.Data4
[7]);
181 linear
= (char*)linear
+ sizeof(guid
);
182 addr
.Offset
+= sizeof(guid
);
185 print_address(&addr
, FALSE
);
191 #define DO_DUMP2(_t,_l,_f,_vv) { \
193 for (i = 0; i < count; i++) { \
194 if (!dbg_read_memory_verbose(linear, &_v, \
195 sizeof(_t))) break; \
196 dbg_printf(_f, (_vv)); \
197 addr.Offset += sizeof(_t); \
198 linear = (char*)linear + sizeof(_t); \
199 if ((i % (_l)) == (_l) - 1 && i != count - 1) \
202 print_address(&addr, FALSE); \
209 #define DO_DUMP(_t,_l,_f) DO_DUMP2(_t,_l,_f,_v)
211 case 'x': DO_DUMP(int, 4, " %8.8x");
212 case 'd': DO_DUMP(unsigned int, 4, " %10d");
213 case 'w': DO_DUMP(unsigned short, 8, " %04x");
214 case 'c': DO_DUMP2(char, 32, " %c", (_v
< 0x20) ? ' ' : _v
);
215 case 'b': DO_DUMP2(char, 16, " %02x", (_v
) & 0xff);
219 BOOL
memory_get_string(HANDLE hp
, void* addr
, BOOL in_debuggee
, BOOL unicode
,
220 char* buffer
, int size
)
226 if (!addr
) return FALSE
;
229 if (!unicode
) return ReadProcessMemory(hp
, addr
, buffer
, size
, &sz
);
231 buffW
= HeapAlloc(GetProcessHeap(), 0, size
* sizeof(WCHAR
));
232 ReadProcessMemory(hp
, addr
, buffW
, size
* sizeof(WCHAR
), &sz
);
233 WideCharToMultiByte(CP_ACP
, 0, buffW
, sz
/ sizeof(WCHAR
), buffer
, size
,
235 HeapFree(GetProcessHeap(), 0, buffW
);
239 strncpy(buffer
, addr
, size
);
240 buffer
[size
- 1] = 0;
245 BOOL
memory_get_string_indirect(HANDLE hp
, void* addr
, BOOL unicode
, char* buffer
, int size
)
252 ReadProcessMemory(hp
, addr
, &ad
, sizeof(ad
), &sz
) && sz
== sizeof(ad
) && ad
)
254 return memory_get_string(hp
, ad
, TRUE
, unicode
, buffer
, size
);
259 static void print_typed_basic(const struct dbg_lvalue
* lvalue
)
261 long long int val_int
;
263 long double val_real
;
264 DWORD tag
, size
, count
, bt
;
265 struct dbg_type rtype
;
266 DWORD linear
= (DWORD
)memory_to_linear_addr(&lvalue
->addr
);
268 if (lvalue
->type
.id
== dbg_itype_none
||
269 !types_get_info(&lvalue
->type
, TI_GET_SYMTAG
, &tag
))
275 if (!types_get_info(&lvalue
->type
, TI_GET_LENGTH
, &size
) ||
276 !types_get_info(&lvalue
->type
, TI_GET_BASETYPE
, &bt
))
278 WINE_ERR("Couldn't get information\n");
279 RaiseException(DEBUG_STATUS_INTERNAL_ERROR
, 0, 0, NULL
);
285 if (!be_cpu
->fetch_integer(lvalue
, size
, TRUE
, &val_int
)) return;
286 dbg_printf("%lld", val_int
);
289 if (!be_cpu
->fetch_integer(lvalue
, size
, FALSE
, &val_int
)) return;
290 dbg_printf("%llu", val_int
);
293 if (!be_cpu
->fetch_float(lvalue
, size
, &val_real
)) return;
294 dbg_printf("%Lf", val_real
);
297 if (!be_cpu
->fetch_integer(lvalue
, size
, TRUE
, &val_int
)) return;
298 /* FIXME: should do the same for a Unicode character (size == 2) */
299 if (size
== 1 && (val_int
< 0x20 || val_int
> 0x80))
300 dbg_printf("%d", (int)val_int
);
302 dbg_printf("'%c'", (char)val_int
);
305 WINE_FIXME("Unsupported basetype %lu\n", bt
);
309 case SymTagPointerType
:
310 if (!memory_read_value(lvalue
, sizeof(void*), &val_ptr
)) return;
312 if (!types_get_info(&lvalue
->type
, TI_GET_TYPE
, &rtype
.id
) ||
313 rtype
.id
== dbg_itype_none
)
315 dbg_printf("Internal symbol error: unable to access memory location %p", val_ptr
);
318 rtype
.module
= lvalue
->type
.module
;
319 if (types_get_info(&rtype
, TI_GET_SYMTAG
, &tag
) && tag
== SymTagBaseType
&&
320 types_get_info(&rtype
, TI_GET_BASETYPE
, &bt
) && bt
== btChar
&&
321 types_get_info(&rtype
, TI_GET_LENGTH
, &size
))
325 memory_get_string(dbg_curr_process
->handle
, val_ptr
,
326 lvalue
->cookie
== DLV_TARGET
,
327 size
== 2, buffer
, sizeof(buffer
));
328 dbg_printf("\"%s\"", buffer
);
330 else dbg_printf("%p", val_ptr
);
332 case SymTagArrayType
:
334 assert(lvalue
->cookie
== DLV_TARGET
);
335 if (!memory_read_value(lvalue
, sizeof(val_ptr
), &val_ptr
)) return;
336 dbg_printf("%p", val_ptr
);
342 assert(lvalue
->cookie
== DLV_TARGET
);
343 /* FIXME: it depends on underlying type for enums
344 * (not supported yet in dbghelp)
345 * Assuming 4 as for an int
347 if (!be_cpu
->fetch_integer(lvalue
, 4, TRUE
, &val_int
)) return;
349 if (types_get_info(&lvalue
->type
, TI_GET_CHILDRENCOUNT
, &count
))
351 char buffer
[sizeof(TI_FINDCHILDREN_PARAMS
) + 256 * sizeof(DWORD
)];
352 TI_FINDCHILDREN_PARAMS
* fcp
= (TI_FINDCHILDREN_PARAMS
*)buffer
;
357 struct dbg_type type
;
362 fcp
->Count
= min(count
, 256);
363 if (types_get_info(&lvalue
->type
, TI_FINDCHILDREN
, fcp
))
365 type
.module
= linear
;
366 for (i
= 0; i
< min(fcp
->Count
, count
); i
++)
368 type
.id
= fcp
->ChildId
[i
];
369 if (!types_get_info(&type
, TI_GET_VALUE
, &variant
))
371 switch (variant
.n1
.n2
.vt
)
373 case VT_I4
: ok
= (val_int
== variant
.n1
.n2
.n3
.lVal
); break;
374 default: WINE_FIXME("Unsupported variant type (%u)\n", variant
.n1
.n2
.vt
);
379 types_get_info(&type
, TI_GET_SYMNAME
, &ptr
);
381 WideCharToMultiByte(CP_ACP
, 0, ptr
, -1, tmp
, sizeof(tmp
), NULL
, NULL
);
382 HeapFree(GetProcessHeap(), 0, ptr
);
383 dbg_printf("%s", tmp
);
384 count
= 0; /* so that we'll get away from outter loop */
390 count
-= min(count
, 256);
393 if (!ok
) dbg_printf("%lld", val_int
);
397 WINE_FIXME("Unsupported tag %lu\n", tag
);
402 /***********************************************************************
405 * Implementation of the 'print' command.
407 void print_basic(const struct dbg_lvalue
* lvalue
, int count
, char format
)
411 if (lvalue
->type
.id
== dbg_itype_none
)
413 dbg_printf("Unable to evaluate expression\n");
417 res
= types_extract_as_integer(lvalue
);
419 /* FIXME: this implies i386 byte ordering */
423 if (lvalue
->addr
.Mode
!= AddrModeFlat
)
424 dbg_printf("0x%04lx", res
);
426 dbg_printf("0x%08lx", res
);
430 dbg_printf("%ld\n", res
);
434 dbg_printf("%d = '%c'", (char)(res
& 0xff), (char)(res
& 0xff));
439 WCHAR wch
= (WCHAR
)(res
& 0xFFFF);
440 dbg_printf("%d = '", wch
);
441 dbg_outputW(&wch
, 1);
450 dbg_printf("Format specifier '%c' is meaningless in 'print' command\n", format
);
452 print_typed_basic(lvalue
);
457 void print_bare_address(const ADDRESS
* addr
)
462 dbg_printf("0x%08lx", addr
->Offset
);
466 dbg_printf("0x%04x:0x%04lx", addr
->Segment
, addr
->Offset
);
469 dbg_printf("0x%04x:0x%08lx", addr
->Segment
, addr
->Offset
);
472 dbg_printf("Unknown mode %x\n", addr
->Mode
);
477 /***********************************************************************
480 * Print an 16- or 32-bit address, with the nearest symbol if any.
482 void print_address(const ADDRESS
* addr
, BOOLEAN with_line
)
484 char buffer
[sizeof(SYMBOL_INFO
) + 256];
485 SYMBOL_INFO
* si
= (SYMBOL_INFO
*)buffer
;
486 void* lin
= memory_to_linear_addr(addr
);
488 print_bare_address(addr
);
490 si
->SizeOfStruct
= sizeof(*si
);
491 si
->MaxNameLen
= 256;
492 if (!SymFromAddr(dbg_curr_process
->handle
, (unsigned long)lin
, NULL
, si
)) return;
493 dbg_printf(" %s", si
->Name
);
499 il
.SizeOfStruct
= sizeof(il
);
500 if (SymGetLineFromAddr(dbg_curr_process
->handle
, (unsigned long)lin
, NULL
, &il
))
501 dbg_printf(" [%s:%lu]", il
.FileName
, il
.LineNumber
);
502 im
.SizeOfStruct
= sizeof(im
);
503 if (SymGetModuleInfo(dbg_curr_process
->handle
, (unsigned long)lin
, &im
))
504 dbg_printf(" in %s", im
.ModuleName
);
514 static BOOL WINAPI
sym_enum_cb(SYMBOL_INFO
* sym_info
, ULONG size
, void* user
)
516 struct sym_enum
* se
= (struct sym_enum
*)user
;
521 if ((sym_info
->Flags
& (SYMFLAG_PARAMETER
|SYMFLAG_FRAMEREL
)) == (SYMFLAG_PARAMETER
|SYMFLAG_FRAMEREL
))
523 struct dbg_type type
;
525 if (se
->tmp
[0]) strcat(se
->tmp
, ", ");
527 type
.module
= sym_info
->ModBase
;
528 type
.id
= sym_info
->TypeIndex
;
529 types_get_info(&type
, TI_GET_OFFSET
, &offset
);
531 dbg_read_memory_verbose((char*)addr
, &val
, sizeof(val
));
532 sprintf(se
->tmp
+ strlen(se
->tmp
), "%s=0x%x", sym_info
->Name
, val
);
537 void print_addr_and_args(const ADDRESS
* pc
, const ADDRESS
* frame
)
539 char buffer
[sizeof(SYMBOL_INFO
) + 256];
540 SYMBOL_INFO
* si
= (SYMBOL_INFO
*)buffer
;
541 IMAGEHLP_STACK_FRAME isf
;
548 if (pc
->Mode
!= AddrModeFlat
)
549 dbg_printf("0x%04x:0x%04lx", pc
->Segment
, pc
->Offset
);
551 dbg_printf("0x%08lx", pc
->Offset
);
553 isf
.InstructionOffset
= (unsigned long)memory_to_linear_addr(pc
);
554 isf
.FrameOffset
= (unsigned long)memory_to_linear_addr(frame
);
556 si
->SizeOfStruct
= sizeof(*si
);
557 si
->MaxNameLen
= 256;
558 if (!SymFromAddr(dbg_curr_process
->handle
, isf
.InstructionOffset
, &disp
, si
))
561 dbg_printf(" %s", si
->Name
);
562 if (disp
) dbg_printf("+0x%lx", disp
);
564 SymSetContext(dbg_curr_process
->handle
, &isf
, NULL
);
566 se
.frame
= isf
.FrameOffset
;
568 SymEnumSymbols(dbg_curr_process
->handle
, 0, NULL
, sym_enum_cb
, &se
);
569 if (tmp
[0]) dbg_printf("(%s)", tmp
);
571 il
.SizeOfStruct
= sizeof(il
);
572 if (SymGetLineFromAddr(dbg_curr_process
->handle
, isf
.InstructionOffset
,
574 dbg_printf(" [%s:%lu]", il
.FileName
, il
.LineNumber
);
575 im
.SizeOfStruct
= sizeof(im
);
576 if (SymGetModuleInfo(dbg_curr_process
->handle
, isf
.InstructionOffset
, &im
))
577 dbg_printf(" in %s", im
.ModuleName
);
580 BOOL
memory_disasm_one_insn(ADDRESS
* addr
)
584 print_address(addr
, TRUE
);
586 if (!dbg_read_memory(memory_to_linear_addr(addr
), &ch
, sizeof(ch
)))
588 dbg_printf("-- no code accessible --\n");
591 be_cpu
->disasm_one_insn(addr
, TRUE
);
596 void memory_disassemble(const struct dbg_lvalue
* xstart
,
597 const struct dbg_lvalue
* xend
, int offset
)
599 static ADDRESS last
= {0,0,0};
601 if (!xstart
&& !xend
)
603 if (!last
.Segment
&& !last
.Offset
) memory_get_current_pc(&last
);
609 last
.Mode
= AddrModeFlat
;
610 last
.Offset
= types_extract_as_integer(xstart
);
612 if (xend
) offset
= types_extract_as_integer(xend
) - last
.Offset
+ 1;
614 while (offset
-- > 0 && memory_disasm_one_insn(&last
));