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
;
267 if (lvalue
->type
.id
== dbg_itype_none
||
268 !types_get_info(&lvalue
->type
, TI_GET_SYMTAG
, &tag
))
274 if (!types_get_info(&lvalue
->type
, TI_GET_LENGTH
, &size
) ||
275 !types_get_info(&lvalue
->type
, TI_GET_BASETYPE
, &bt
))
277 WINE_ERR("Couldn't get information\n");
278 RaiseException(DEBUG_STATUS_INTERNAL_ERROR
, 0, 0, NULL
);
284 if (!be_cpu
->fetch_integer(lvalue
, size
, TRUE
, &val_int
)) return;
285 dbg_printf("%lld", val_int
);
288 if (!be_cpu
->fetch_integer(lvalue
, size
, FALSE
, &val_int
)) return;
289 dbg_printf("%llu", val_int
);
292 if (!be_cpu
->fetch_float(lvalue
, size
, &val_real
)) return;
293 dbg_printf("%Lf", val_real
);
296 if (!be_cpu
->fetch_integer(lvalue
, size
, TRUE
, &val_int
)) return;
297 /* FIXME: should do the same for a Unicode character (size == 2) */
298 if (size
== 1 && (val_int
< 0x20 || val_int
> 0x80))
299 dbg_printf("%d", (int)val_int
);
301 dbg_printf("'%c'", (char)val_int
);
304 WINE_FIXME("Unsupported basetype %lu\n", bt
);
308 case SymTagPointerType
:
309 if (!memory_read_value(lvalue
, sizeof(void*), &val_ptr
)) return;
311 if (!types_get_info(&lvalue
->type
, TI_GET_TYPE
, &rtype
.id
) ||
312 rtype
.id
== dbg_itype_none
)
314 dbg_printf("Internal symbol error: unable to access memory location %p", val_ptr
);
317 rtype
.module
= lvalue
->type
.module
;
318 if (types_get_info(&rtype
, TI_GET_SYMTAG
, &tag
) && tag
== SymTagBaseType
&&
319 types_get_info(&rtype
, TI_GET_BASETYPE
, &bt
) && bt
== btChar
&&
320 types_get_info(&rtype
, TI_GET_LENGTH
, &size
))
324 memory_get_string(dbg_curr_process
->handle
, val_ptr
,
325 lvalue
->cookie
== DLV_TARGET
,
326 size
== 2, buffer
, sizeof(buffer
));
327 dbg_printf("\"%s\"", buffer
);
329 else dbg_printf("%p", val_ptr
);
331 case SymTagArrayType
:
333 assert(lvalue
->cookie
== DLV_TARGET
);
334 if (!memory_read_value(lvalue
, sizeof(val_ptr
), &val_ptr
)) return;
335 dbg_printf("%p", val_ptr
);
341 assert(lvalue
->cookie
== DLV_TARGET
);
342 /* FIXME: it depends on underlying type for enums
343 * (not supported yet in dbghelp)
344 * Assuming 4 as for an int
346 if (!be_cpu
->fetch_integer(lvalue
, 4, TRUE
, &val_int
)) return;
348 if (types_get_info(&lvalue
->type
, TI_GET_CHILDRENCOUNT
, &count
))
350 char buffer
[sizeof(TI_FINDCHILDREN_PARAMS
) + 256 * sizeof(DWORD
)];
351 TI_FINDCHILDREN_PARAMS
* fcp
= (TI_FINDCHILDREN_PARAMS
*)buffer
;
356 struct dbg_type type
;
361 fcp
->Count
= min(count
, 256);
362 if (types_get_info(&lvalue
->type
, TI_FINDCHILDREN
, fcp
))
364 type
.module
= lvalue
->type
.module
;
365 for (i
= 0; i
< min(fcp
->Count
, count
); i
++)
367 type
.id
= fcp
->ChildId
[i
];
368 if (!types_get_info(&type
, TI_GET_VALUE
, &variant
))
370 switch (variant
.n1
.n2
.vt
)
372 case VT_I4
: ok
= (val_int
== variant
.n1
.n2
.n3
.lVal
); break;
373 default: WINE_FIXME("Unsupported variant type (%u)\n", variant
.n1
.n2
.vt
);
378 types_get_info(&type
, TI_GET_SYMNAME
, &ptr
);
380 WideCharToMultiByte(CP_ACP
, 0, ptr
, -1, tmp
, sizeof(tmp
), NULL
, NULL
);
381 HeapFree(GetProcessHeap(), 0, ptr
);
382 dbg_printf("%s", tmp
);
383 count
= 0; /* so that we'll get away from outter loop */
389 count
-= min(count
, 256);
392 if (!ok
) dbg_printf("%lld", val_int
);
396 WINE_FIXME("Unsupported tag %lu\n", tag
);
401 /***********************************************************************
404 * Implementation of the 'print' command.
406 void print_basic(const struct dbg_lvalue
* lvalue
, int count
, char format
)
410 if (lvalue
->type
.id
== dbg_itype_none
)
412 dbg_printf("Unable to evaluate expression\n");
416 res
= types_extract_as_integer(lvalue
);
418 /* FIXME: this implies i386 byte ordering */
422 if (lvalue
->addr
.Mode
!= AddrModeFlat
)
423 dbg_printf("0x%04lx", res
);
425 dbg_printf("0x%08lx", res
);
429 dbg_printf("%ld\n", res
);
433 dbg_printf("%d = '%c'", (char)(res
& 0xff), (char)(res
& 0xff));
438 WCHAR wch
= (WCHAR
)(res
& 0xFFFF);
439 dbg_printf("%d = '", wch
);
440 dbg_outputW(&wch
, 1);
449 dbg_printf("Format specifier '%c' is meaningless in 'print' command\n", format
);
451 print_typed_basic(lvalue
);
456 void print_bare_address(const ADDRESS
* addr
)
461 dbg_printf("0x%08lx", addr
->Offset
);
465 dbg_printf("0x%04x:0x%04lx", addr
->Segment
, addr
->Offset
);
468 dbg_printf("0x%04x:0x%08lx", addr
->Segment
, addr
->Offset
);
471 dbg_printf("Unknown mode %x\n", addr
->Mode
);
476 /***********************************************************************
479 * Print an 16- or 32-bit address, with the nearest symbol if any.
481 void print_address(const ADDRESS
* addr
, BOOLEAN with_line
)
483 char buffer
[sizeof(SYMBOL_INFO
) + 256];
484 SYMBOL_INFO
* si
= (SYMBOL_INFO
*)buffer
;
485 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
, (DWORD_PTR
)lin
, &disp
, si
)) return;
493 dbg_printf(" %s", si
->Name
);
494 if (disp
) dbg_printf("+0x%lx", (DWORD_PTR
)disp
);
500 il
.SizeOfStruct
= sizeof(il
);
501 if (SymGetLineFromAddr(dbg_curr_process
->handle
, (DWORD_PTR
)lin
, NULL
, &il
))
502 dbg_printf(" [%s:%lu]", il
.FileName
, il
.LineNumber
);
503 im
.SizeOfStruct
= sizeof(im
);
504 if (SymGetModuleInfo(dbg_curr_process
->handle
, (DWORD_PTR
)lin
, &im
))
505 dbg_printf(" in %s", im
.ModuleName
);
515 static BOOL WINAPI
sym_enum_cb(SYMBOL_INFO
* sym_info
, ULONG size
, void* user
)
517 struct sym_enum
* se
= (struct sym_enum
*)user
;
522 if ((sym_info
->Flags
& (SYMFLAG_PARAMETER
|SYMFLAG_FRAMEREL
)) == (SYMFLAG_PARAMETER
|SYMFLAG_FRAMEREL
))
524 struct dbg_type type
;
526 if (se
->tmp
[0]) strcat(se
->tmp
, ", ");
528 type
.module
= sym_info
->ModBase
;
529 type
.id
= sym_info
->TypeIndex
;
530 types_get_info(&type
, TI_GET_OFFSET
, &offset
);
532 dbg_read_memory_verbose((char*)addr
, &val
, sizeof(val
));
533 sprintf(se
->tmp
+ strlen(se
->tmp
), "%s=0x%x", sym_info
->Name
, val
);
538 void print_addr_and_args(const ADDRESS
* pc
, const ADDRESS
* frame
)
540 char buffer
[sizeof(SYMBOL_INFO
) + 256];
541 SYMBOL_INFO
* si
= (SYMBOL_INFO
*)buffer
;
542 IMAGEHLP_STACK_FRAME isf
;
547 print_bare_address(pc
);
549 isf
.InstructionOffset
= (DWORD_PTR
)memory_to_linear_addr(pc
);
550 isf
.FrameOffset
= (DWORD_PTR
)memory_to_linear_addr(frame
);
552 /* grab module where symbol is. If we don't have a module, we cannot print more */
553 im
.SizeOfStruct
= sizeof(im
);
554 if (!SymGetModuleInfo(dbg_curr_process
->handle
, isf
.InstructionOffset
, &im
))
557 si
->SizeOfStruct
= sizeof(*si
);
558 si
->MaxNameLen
= 256;
559 if (SymFromAddr(dbg_curr_process
->handle
, isf
.InstructionOffset
, &disp
, si
))
564 dbg_printf(" %s", si
->Name
);
565 if (disp
) dbg_printf("+0x%lx", (DWORD_PTR
)disp
);
567 SymSetContext(dbg_curr_process
->handle
, &isf
, NULL
);
569 se
.frame
= isf
.FrameOffset
;
571 SymEnumSymbols(dbg_curr_process
->handle
, 0, NULL
, sym_enum_cb
, &se
);
572 if (tmp
[0]) dbg_printf("(%s)", tmp
);
574 il
.SizeOfStruct
= sizeof(il
);
575 if (SymGetLineFromAddr(dbg_curr_process
->handle
, isf
.InstructionOffset
,
577 dbg_printf(" [%s:%lu]", il
.FileName
, il
.LineNumber
);
578 dbg_printf(" in %s", im
.ModuleName
);
580 else dbg_printf(" in %s (+0x%lx)",
581 im
.ModuleName
, (DWORD_PTR
)(isf
.InstructionOffset
- im
.BaseOfImage
));
584 BOOL
memory_disasm_one_insn(ADDRESS
* addr
)
588 print_address(addr
, TRUE
);
590 if (!dbg_read_memory(memory_to_linear_addr(addr
), &ch
, sizeof(ch
)))
592 dbg_printf("-- no code accessible --\n");
595 be_cpu
->disasm_one_insn(addr
, TRUE
);
600 void memory_disassemble(const struct dbg_lvalue
* xstart
,
601 const struct dbg_lvalue
* xend
, int instruction_count
)
603 static ADDRESS last
= {0,0,0};
607 if (!xstart
&& !xend
)
609 if (!last
.Segment
&& !last
.Offset
) memory_get_current_pc(&last
);
615 last
.Mode
= AddrModeFlat
;
616 last
.Offset
= types_extract_as_integer(xstart
);
619 stop
= types_extract_as_integer(xend
);
621 for (i
= 0; (instruction_count
== 0 || i
< instruction_count
) &&
622 (stop
== 0 || last
.Offset
<= stop
); i
++)
623 memory_disasm_one_insn(&last
);