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 static 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
)
97 if (lvalue
->cookie
== DLV_TARGET
)
99 void* linear
= memory_to_linear_addr(&lvalue
->addr
);
100 if (!(ret
= dbg_read_memory(linear
, result
, size
)))
101 memory_report_invalid_addr(linear
);
105 if (lvalue
->addr
.Offset
)
107 memcpy(result
, (void*)lvalue
->addr
.Offset
, size
);
114 /***********************************************************************
117 * Store a value in memory.
119 BOOL
memory_write_value(const struct dbg_lvalue
* lvalue
, DWORD size
, void* value
)
125 types_get_info(&lvalue
->type
, TI_GET_LENGTH
, &os
);
128 /* FIXME: only works on little endian systems */
129 if (lvalue
->cookie
== DLV_TARGET
)
131 void* linear
= memory_to_linear_addr(&lvalue
->addr
);
132 if (!(ret
= dbg_write_memory(linear
, value
, size
)))
133 memory_report_invalid_addr(linear
);
137 memcpy((void*)lvalue
->addr
.Offset
, value
, size
);
142 /***********************************************************************
145 * Implementation of the 'x' command.
147 void memory_examine(const struct dbg_lvalue
*lvalue
, int count
, char format
)
154 if (lvalue
->type
.id
== dbg_itype_none
)
156 be_cpu
->build_addr(dbg_curr_thread
->handle
, &dbg_context
,
157 &addr
, lvalue
->addr
.Segment
, lvalue
->addr
.Offset
);
161 addr
.Mode
= AddrModeFlat
;
162 addr
.Offset
= types_extract_as_integer( lvalue
);
164 linear
= memory_to_linear_addr( &addr
);
166 if (format
!= 'i' && count
> 1)
168 print_address(&addr
, FALSE
);
175 if (count
== 1) count
= 256;
176 memory_get_string(dbg_curr_process
, linear
,
177 TRUE
, TRUE
, buffer
, min(count
, sizeof(buffer
)));
178 dbg_printf("%s\n", buffer
);
181 if (count
== 1) count
= 256;
182 memory_get_string(dbg_curr_process
, linear
,
183 TRUE
, FALSE
, buffer
, min(count
, sizeof(buffer
)));
184 dbg_printf("%s\n", buffer
);
187 while (count
-- && memory_disasm_one_insn(&addr
));
193 if (!dbg_read_memory(linear
, &guid
, sizeof(guid
)))
195 memory_report_invalid_addr(linear
);
198 dbg_printf("{%08lx-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}\n",
199 guid
.Data1
, guid
.Data2
, guid
.Data3
,
200 guid
.Data4
[0], guid
.Data4
[1], guid
.Data4
[2], guid
.Data4
[3],
201 guid
.Data4
[4], guid
.Data4
[5], guid
.Data4
[6], guid
.Data4
[7]);
202 linear
= (char*)linear
+ sizeof(guid
);
203 addr
.Offset
+= sizeof(guid
);
206 print_address(&addr
, FALSE
);
212 #define DO_DUMP2(_t,_l,_f,_vv) { \
214 for (i = 0; i < count; i++) { \
215 if (!dbg_read_memory(linear, &_v, sizeof(_t))) \
216 { memory_report_invalid_addr(linear); break; } \
217 dbg_printf(_f, (_vv)); \
218 addr.Offset += sizeof(_t); \
219 linear = (char*)linear + sizeof(_t); \
220 if ((i % (_l)) == (_l) - 1 && i != count - 1) \
223 print_address(&addr, FALSE); \
230 #define DO_DUMP(_t,_l,_f) DO_DUMP2(_t,_l,_f,_v)
232 case 'x': DO_DUMP(int, 4, " %8.8x");
233 case 'd': DO_DUMP(unsigned int, 4, " %10d");
234 case 'w': DO_DUMP(unsigned short, 8, " %04x");
235 case 'c': DO_DUMP2(char, 32, " %c", (_v
< 0x20) ? ' ' : _v
);
236 case 'b': DO_DUMP2(char, 16, " %02x", (_v
) & 0xff);
240 BOOL
memory_get_string(struct dbg_process
* pcs
, void* addr
, BOOL in_debuggee
,
241 BOOL unicode
, char* buffer
, int size
)
247 if (!addr
) return FALSE
;
252 if (!unicode
) ret
= pcs
->process_io
->read(pcs
->handle
, addr
, buffer
, size
, &sz
);
255 buffW
= HeapAlloc(GetProcessHeap(), 0, size
* sizeof(WCHAR
));
256 ret
= pcs
->process_io
->read(pcs
->handle
, addr
, buffW
, size
* sizeof(WCHAR
), &sz
);
257 WideCharToMultiByte(CP_ACP
, 0, buffW
, sz
/ sizeof(WCHAR
), buffer
, size
,
259 HeapFree(GetProcessHeap(), 0, buffW
);
261 if (size
) buffer
[size
-1] = 0;
266 lstrcpynA(buffer
, addr
, size
);
271 BOOL
memory_get_string_indirect(struct dbg_process
* pcs
, void* addr
, BOOL unicode
, char* buffer
, int size
)
278 pcs
->process_io
->read(pcs
->handle
, addr
, &ad
, sizeof(ad
), &sz
) && sz
== sizeof(ad
) && ad
)
280 return memory_get_string(pcs
, ad
, TRUE
, unicode
, buffer
, size
);
285 static void print_typed_basic(const struct dbg_lvalue
* lvalue
)
287 long long int val_int
;
289 long double val_real
;
291 DWORD tag
, size
, count
, bt
;
292 struct dbg_type rtype
;
294 if (lvalue
->type
.id
== dbg_itype_none
||
295 !types_get_info(&lvalue
->type
, TI_GET_SYMTAG
, &tag
))
301 if (!types_get_info(&lvalue
->type
, TI_GET_LENGTH
, &size64
) ||
302 !types_get_info(&lvalue
->type
, TI_GET_BASETYPE
, &bt
))
304 WINE_ERR("Couldn't get information\n");
305 RaiseException(DEBUG_STATUS_INTERNAL_ERROR
, 0, 0, NULL
);
307 size
= (DWORD
)size64
;
311 if (!be_cpu
->fetch_integer(lvalue
, size
, TRUE
, &val_int
)) return;
312 dbg_printf("%lld", val_int
);
315 if (!be_cpu
->fetch_integer(lvalue
, size
, FALSE
, &val_int
)) return;
316 dbg_printf("%llu", val_int
);
319 if (!be_cpu
->fetch_float(lvalue
, size
, &val_real
)) return;
320 dbg_printf("%Lf", val_real
);
323 if (!be_cpu
->fetch_integer(lvalue
, size
, TRUE
, &val_int
)) return;
324 /* FIXME: should do the same for a Unicode character (size == 2) */
325 if (size
== 1 && (val_int
< 0x20 || val_int
> 0x80))
326 dbg_printf("%d", (int)val_int
);
328 dbg_printf("'%c'", (char)val_int
);
331 WINE_FIXME("Unsupported basetype %lu\n", bt
);
335 case SymTagPointerType
:
336 if (!memory_read_value(lvalue
, sizeof(void*), &val_ptr
)) return;
338 if (!types_get_info(&lvalue
->type
, TI_GET_TYPE
, &rtype
.id
) ||
339 rtype
.id
== dbg_itype_none
)
341 dbg_printf("Internal symbol error: unable to access memory location %p", val_ptr
);
344 rtype
.module
= lvalue
->type
.module
;
345 if (types_get_info(&rtype
, TI_GET_SYMTAG
, &tag
) && tag
== SymTagBaseType
&&
346 types_get_info(&rtype
, TI_GET_BASETYPE
, &bt
) && bt
== btChar
&&
347 types_get_info(&rtype
, TI_GET_LENGTH
, &size64
))
351 if (!val_ptr
) dbg_printf("0x0");
352 else if (memory_get_string(dbg_curr_process
, val_ptr
,
353 lvalue
->cookie
== DLV_TARGET
,
354 size64
== 2, buffer
, sizeof(buffer
)))
355 dbg_printf("\"%s\"", buffer
);
357 dbg_printf("*** invalid address %p ***", val_ptr
);
359 else dbg_printf("%p", val_ptr
);
361 case SymTagArrayType
:
363 assert(lvalue
->cookie
== DLV_TARGET
);
364 if (!memory_read_value(lvalue
, sizeof(val_ptr
), &val_ptr
)) return;
365 dbg_printf("%p", val_ptr
);
371 assert(lvalue
->cookie
== DLV_TARGET
);
372 /* FIXME: it depends on underlying type for enums
373 * (not supported yet in dbghelp)
374 * Assuming 4 as for an int
376 if (!be_cpu
->fetch_integer(lvalue
, 4, TRUE
, &val_int
)) return;
378 if (types_get_info(&lvalue
->type
, TI_GET_CHILDRENCOUNT
, &count
))
380 char buffer
[sizeof(TI_FINDCHILDREN_PARAMS
) + 256 * sizeof(DWORD
)];
381 TI_FINDCHILDREN_PARAMS
* fcp
= (TI_FINDCHILDREN_PARAMS
*)buffer
;
386 struct dbg_type type
;
391 fcp
->Count
= min(count
, 256);
392 if (types_get_info(&lvalue
->type
, TI_FINDCHILDREN
, fcp
))
394 type
.module
= lvalue
->type
.module
;
395 for (i
= 0; i
< min(fcp
->Count
, count
); i
++)
397 type
.id
= fcp
->ChildId
[i
];
398 if (!types_get_info(&type
, TI_GET_VALUE
, &variant
))
400 switch (variant
.n1
.n2
.vt
)
402 case VT_I4
: ok
= (val_int
== variant
.n1
.n2
.n3
.lVal
); break;
403 default: WINE_FIXME("Unsupported variant type (%u)\n", variant
.n1
.n2
.vt
);
408 types_get_info(&type
, TI_GET_SYMNAME
, &ptr
);
410 WideCharToMultiByte(CP_ACP
, 0, ptr
, -1, tmp
, sizeof(tmp
), NULL
, NULL
);
411 HeapFree(GetProcessHeap(), 0, ptr
);
412 dbg_printf("%s", tmp
);
413 count
= 0; /* so that we'll get away from outter loop */
419 count
-= min(count
, 256);
422 if (!ok
) dbg_printf("%lld", val_int
);
426 WINE_FIXME("Unsupported tag %lu\n", tag
);
431 /***********************************************************************
434 * Implementation of the 'print' command.
436 void print_basic(const struct dbg_lvalue
* lvalue
, int count
, char format
)
440 if (lvalue
->type
.id
== dbg_itype_none
)
442 dbg_printf("Unable to evaluate expression\n");
446 res
= types_extract_as_integer(lvalue
);
448 /* FIXME: this implies i386 byte ordering */
452 if (lvalue
->addr
.Mode
!= AddrModeFlat
)
453 dbg_printf("0x%04lx", res
);
455 dbg_printf("0x%08lx", res
);
459 dbg_printf("%ld\n", res
);
463 dbg_printf("%d = '%c'", (char)(res
& 0xff), (char)(res
& 0xff));
468 WCHAR wch
= (WCHAR
)(res
& 0xFFFF);
469 dbg_printf("%d = '", wch
);
470 dbg_outputW(&wch
, 1);
479 dbg_printf("Format specifier '%c' is meaningless in 'print' command\n", format
);
481 print_typed_basic(lvalue
);
486 void print_bare_address(const ADDRESS
* addr
)
491 dbg_printf("0x%08lx", addr
->Offset
);
495 dbg_printf("0x%04x:0x%04lx", addr
->Segment
, addr
->Offset
);
498 dbg_printf("0x%04x:0x%08lx", addr
->Segment
, addr
->Offset
);
501 dbg_printf("Unknown mode %x\n", addr
->Mode
);
506 /***********************************************************************
509 * Print an 16- or 32-bit address, with the nearest symbol if any.
511 void print_address(const ADDRESS
* addr
, BOOLEAN with_line
)
513 char buffer
[sizeof(SYMBOL_INFO
) + 256];
514 SYMBOL_INFO
* si
= (SYMBOL_INFO
*)buffer
;
515 void* lin
= memory_to_linear_addr(addr
);
519 print_bare_address(addr
);
521 si
->SizeOfStruct
= sizeof(*si
);
522 si
->MaxNameLen
= 256;
523 if (!SymFromAddr(dbg_curr_process
->handle
, (DWORD_PTR
)lin
, &disp64
, si
)) return;
524 dbg_printf(" %s", si
->Name
);
525 if (disp64
) dbg_printf("+0x%lx", (DWORD_PTR
)disp64
);
531 il
.SizeOfStruct
= sizeof(il
);
532 if (SymGetLineFromAddr(dbg_curr_process
->handle
, (DWORD_PTR
)lin
, &disp
, &il
))
533 dbg_printf(" [%s:%lu]", il
.FileName
, il
.LineNumber
);
534 im
.SizeOfStruct
= sizeof(im
);
535 if (SymGetModuleInfo(dbg_curr_process
->handle
, (DWORD_PTR
)lin
, &im
))
536 dbg_printf(" in %s", im
.ModuleName
);
540 BOOL
memory_disasm_one_insn(ADDRESS
* addr
)
544 print_address(addr
, TRUE
);
546 if (!dbg_read_memory(memory_to_linear_addr(addr
), &ch
, sizeof(ch
)))
548 dbg_printf("-- no code accessible --\n");
551 be_cpu
->disasm_one_insn(addr
, TRUE
);
556 void memory_disassemble(const struct dbg_lvalue
* xstart
,
557 const struct dbg_lvalue
* xend
, int instruction_count
)
559 static ADDRESS last
= {0,0,0};
563 if (!xstart
&& !xend
)
565 if (!last
.Segment
&& !last
.Offset
) memory_get_current_pc(&last
);
571 if (xstart
->type
.id
== dbg_itype_none
)
573 be_cpu
->build_addr(dbg_curr_thread
->handle
, &dbg_context
,
574 &last
, xstart
->addr
.Segment
, xstart
->addr
.Offset
);
578 last
.Mode
= AddrModeFlat
;
579 last
.Offset
= types_extract_as_integer( xstart
);
583 stop
= types_extract_as_integer(xend
);
585 for (i
= 0; (instruction_count
== 0 || i
< instruction_count
) &&
586 (stop
== 0 || last
.Offset
<= stop
); i
++)
587 memory_disasm_one_insn(&last
);