programs/winedbg/debugger.h

   1 /*
   2  * Debugger definitions
   3  *
   4  * Copyright 1995 Alexandre Julliard
   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 #ifndef __WINE_DEBUGGER_H
  22 #define __WINE_DEBUGGER_H
  23
  24 #include <assert.h>
  25 #include <stdarg.h>
  26
  27 #define NONAMELESSUNION
  28 #define NONAMELESSSTRUCT
  29 #include "ntstatus.h"
  30 #define WIN32_NO_STATUS
  31 #define WIN32_LEAN_AND_MEAN
  32 #include "windef.h"
  33 #include "winbase.h"
  34 #include "winver.h"
  35 #include "winternl.h"
  36 #include "dbghelp.h"
  37 #include "cvconst.h"
  38 #include "objbase.h"
  39 #include "oaidl.h"
  40
  41 /* the debugger uses these exceptions for it's internal use */
  42 #define DEBUG_STATUS_OFFSET             0x80003000
  43 #define DEBUG_STATUS_INTERNAL_ERROR     (DEBUG_STATUS_OFFSET+0) /* something went wrong */
  44 #define DEBUG_STATUS_NO_SYMBOL          (DEBUG_STATUS_OFFSET+1) /* no symbol found in lookup */
  45 #define DEBUG_STATUS_DIV_BY_ZERO        (DEBUG_STATUS_OFFSET+2)
  46 #define DEBUG_STATUS_BAD_TYPE           (DEBUG_STATUS_OFFSET+3) /* no type found, when type was expected */
  47 #define DEBUG_STATUS_NO_FIELD           (DEBUG_STATUS_OFFSET+4) /* when dereferencing a struct, the field was not found */
  48 #define DEBUG_STATUS_ABORT              (DEBUG_STATUS_OFFSET+5) /* user aborted on going action */
  49 #define DEBUG_STATUS_CANT_DEREF         (DEBUG_STATUS_OFFSET+6) /* either not deref:able, or index out of bounds */
  50 #define DEBUG_STATUS_NOT_AN_INTEGER     (DEBUG_STATUS_OFFSET+7) /* requiring an integral value */
  51
  52 /*
  53  * Return values for symbol_get_function_line_status.  Used to determine
  54  * what to do when the 'step' command is given.
  55  */
  56 enum dbg_line_status
  57 {
  58     dbg_no_line_info,
  59     dbg_not_on_a_line_number,
  60     dbg_on_a_line_number,
  61     dbg_in_a_thunk,
  62 };
  63
  64 enum dbg_internal_types
  65 {
  66     dbg_itype_first             = 0xffffff00,
  67     dbg_itype_unsigned_int,
  68     dbg_itype_signed_int,
  69     dbg_itype_signed_char_int,
  70     dbg_itype_unsigned_char_int,
  71     dbg_itype_unsigned_short_int,
  72     dbg_itype_signed_short_int,
  73     dbg_itype_unsigned_long_int,
  74     dbg_itype_signed_long_int,
  75     dbg_itype_unsigned_longlong_int,
  76     dbg_itype_signed_longlong_int,
  77     dbg_itype_char,
  78     dbg_itype_wchar,
  79     dbg_itype_short_real, /* aka float */
  80     dbg_itype_real,       /* aka double */
  81     dbg_itype_long_real,  /* aka long double */
  82     dbg_itype_astring,
  83     dbg_itype_ustring,
  84     dbg_itype_segptr,     /* hack for segmented pointers */
  85     dbg_itype_none              = 0xffffffff
  86 };
  87
  88 /* type description (in the following order):
  89  * - if 'id' is dbg_itype_none (whatever 'module' value), the type isn't known
  90  * - if 'module' is 0, it's an internal type (id is one of dbg_itype...)
  91  * - if 'module' is non 0, then 'id' is a type ID referring to module (loaded in
  92  *   dbghelp) which (linear) contains address 'module'.
  93  */
  94 struct dbg_type
  95 {
  96     unsigned long       id;
  97     DWORD               module;
  98 };
  99
 100 struct dbg_lvalue       /* structure to hold left-values... */
 101 {
 102     int                 cookie; /* DLV_??? */
 103 /* DLV_TARGET references an address in debuggee's address space, whereas DLV_HOST
 104  * references the winedbg's address space
 105  */
 106 #       define  DLV_TARGET      0xF00D
 107 #       define  DLV_HOST        0x50DA
 108     ADDRESS64           addr;
 109     struct dbg_type     type;
 110 };
 111
 112 enum dbg_exec_mode
 113 {
 114     dbg_exec_cont,                      /* Continue execution */
 115     dbg_exec_step_over_line,            /* Stepping over a call to next source line */
 116     dbg_exec_step_into_line,            /* Step to next source line, stepping in if needed */
 117     dbg_exec_step_over_insn,            /* Stepping over a call */
 118     dbg_exec_step_into_insn,            /* Single-stepping an instruction */
 119     dbg_exec_finish,                    /* Single-step until we exit current frame */
 120 #if 0
 121     EXEC_STEP_OVER_TRAMPOLINE,  /* Step over trampoline.  Requires that we dig the real
 122                                  * return value off the stack and set breakpoint there -
 123                                  * not at the instr just after the call.
 124                                  */
 125 #endif
 126 };
 127
 128 struct dbg_breakpoint
 129 {
 130     ADDRESS64           addr;
 131     unsigned long       enabled : 1,
 132                         xpoint_type : 2,
 133                         refcount : 13,
 134                         skipcount : 16;
 135     unsigned long       info;
 136     struct              /* only used for watchpoints */
 137     {
 138         BYTE            len : 2;
 139         DWORD           oldval;
 140     } w;
 141     struct expr*        condition;
 142 };
 143
 144 /* used for C++ exceptions in msvcrt
 145  * parameters:
 146  * [0] CXX_FRAME_MAGIC
 147  * [1] pointer to exception object
 148  * [2] pointer to type
 149  */
 150 #define CXX_EXCEPTION                       0xe06d7363
 151 #define CXX_FRAME_MAGIC                     0x19930520
 152
 153 /* Wine extension; Windows doesn't have a name for this code.  This is an
 154    undocumented exception understood by MS VC debugger, allowing the program
 155    to name a particular thread.  Search google.com or deja.com for "0x406d1388"
 156    for more info. */
 157 #define EXCEPTION_NAME_THREAD               0x406D1388
 158
 159 /* Helper structure */
 160 typedef struct tagTHREADNAME_INFO
 161 {
 162    DWORD   dwType;     /* Must be 0x1000 */
 163    LPCTSTR szName;     /* Pointer to name - limited to 9 bytes (8 characters + terminator) */
 164    DWORD   dwThreadID; /* Thread ID (-1 = caller thread) */
 165    DWORD   dwFlags;    /* Reserved for future use.  Must be zero. */
 166 } THREADNAME_INFO;
 167
 168 #ifdef __i386__
 169 #include "pshpack1.h"
 170 struct MSVCRT_HANDLER
 171 {
 172     BYTE        mov;
 173     DWORD_PTR   offset;
 174     BYTE        jmp;
 175 };
 176 #include "poppack.h"
 177 #endif
 178
 179 struct dbg_thread
 180 {
 181     struct dbg_process*         process;
 182     HANDLE                      handle;
 183     DWORD                       tid;
 184     void*                       teb;
 185     enum dbg_exec_mode          exec_mode;      /* mode the thread is run (step/run...) */
 186     int                         exec_count;     /* count of mode operations */
 187     ADDRESS_MODE                addr_mode;      /* mode */
 188     int                         stopped_xpoint; /* xpoint on which the thread has stopped (-1 if none) */
 189     struct dbg_breakpoint       step_over_bp;
 190     char*                       name;
 191     struct dbg_thread*          next;
 192     struct dbg_thread*          prev;
 193     BOOL                        in_exception;   /* TRUE if thread stopped with an exception */
 194     EXCEPTION_RECORD            excpt_record;   /* only valid when in_exception is TRUE */
 195     struct
 196     {
 197         ADDRESS64               addr_pc;
 198         ADDRESS64               addr_frame;
 199         ADDRESS64               addr_stack;
 200         DWORD                   linear_pc;
 201         DWORD                   linear_frame;
 202         DWORD                   linear_stack;
 203     }*                          frames;
 204     int                         num_frames;
 205     int                         curr_frame;
 206 };
 207
 208 struct dbg_delayed_bp
 209 {
 210     BOOL                        is_symbol;
 211     BOOL                        software_bp;
 212     union
 213     {
 214         struct
 215         {
 216             int                         lineno;
 217             char*                       name;
 218         } symbol;
 219         ADDRESS64               addr;
 220     } u;
 221 };
 222
 223 #define MAX_BREAKPOINTS 100
 224 struct dbg_process
 225 {
 226     HANDLE                      handle;
 227     DWORD                       pid;
 228     const struct be_process_io* process_io;
 229     void*                       pio_data;
 230     const char*                 imageName;
 231     struct dbg_thread*          threads;
 232     unsigned                    continue_on_first_exception : 1,
 233                                 active_debuggee : 1;
 234     struct dbg_breakpoint       bp[MAX_BREAKPOINTS];
 235     unsigned                    next_bp;
 236     struct dbg_delayed_bp*      delayed_bp;
 237     int                         num_delayed_bp;
 238     struct dbg_process*         next;
 239     struct dbg_process*         prev;
 240 };
 241
 242 /* describes the way the debugger interacts with a given process */
 243 struct be_process_io
 244 {
 245     BOOL        (*close_process)(struct dbg_process*, BOOL);
 246     BOOL        (WINAPI *read)(HANDLE, const void*, void*, SIZE_T, SIZE_T*);
 247     BOOL        (WINAPI *write)(HANDLE, void*, const void*, SIZE_T, SIZE_T*);
 248 };
 249
 250 extern  struct dbg_process*     dbg_curr_process;
 251 extern  DWORD                   dbg_curr_pid;
 252 extern  struct dbg_thread*      dbg_curr_thread;
 253 extern  DWORD                   dbg_curr_tid;
 254 extern  CONTEXT                 dbg_context;
 255 extern  BOOL                    dbg_interactiveP;
 256
 257 struct dbg_internal_var
 258 {
 259     DWORD                       val;
 260     const char*                 name;
 261     LPDWORD                     pval;
 262     unsigned long               typeid; /* always internal type */
 263 };
 264
 265 enum sym_get_lval {sglv_found, sglv_unknown, sglv_aborted};
 266
 267 enum type_expr_e
 268 {
 269     type_expr_type_id,
 270     type_expr_udt_class,
 271     type_expr_udt_struct,
 272     type_expr_udt_union,
 273     type_expr_enumeration
 274 };
 275
 276 struct type_expr_t
 277 {
 278     enum type_expr_e    type;
 279     unsigned            deref_count;
 280     union
 281     {
 282         struct dbg_type type;
 283         const char*     name;
 284     } u;
 285 };
 286
 287 enum dbg_start {start_ok, start_error_parse, start_error_init};
 288
 289   /* break.c */
 290 extern void             break_set_xpoints(BOOL set);
 291 extern BOOL             break_add_break(const ADDRESS64* addr, BOOL verbose, BOOL swbp);
 292 extern BOOL             break_add_break_from_lvalue(const struct dbg_lvalue* value, BOOL swbp);
 293 extern void             break_add_break_from_id(const char* name, int lineno, BOOL swbp);
 294 extern void             break_add_break_from_lineno(int lineno, BOOL swbp);
 295 extern void             break_add_watch_from_lvalue(const struct dbg_lvalue* lvalue);
 296 extern void             break_add_watch_from_id(const char* name);
 297 extern void             break_check_delayed_bp(void);
 298 extern void             break_delete_xpoint(int num);
 299 extern void             break_delete_xpoints_from_module(unsigned long base);
 300 extern void             break_enable_xpoint(int num, BOOL enable);
 301 extern void             break_info(void);
 302 extern void             break_adjust_pc(ADDRESS64* addr, DWORD code, BOOL first_chance, BOOL* is_break);
 303 extern BOOL             break_should_continue(ADDRESS64* addr, DWORD code);
 304 extern void             break_suspend_execution(void);
 305 extern void             break_restart_execution(int count);
 306 extern int              break_add_condition(int bpnum, struct expr* exp);
 307
 308   /* dbg.y */
 309 extern void             parser(const char*);
 310 extern void             parser_handle(HANDLE);
 311 extern int              input_read_line(const char* pfx, char* buffer, int size);
 312 extern int              input_fetch_entire_line(const char* pfx, char** line);
 313 extern HANDLE           parser_generate_command_file(const char*, ...);
 314
 315   /* debug.l */
 316 extern void             lexeme_flush(void);
 317 extern char*            lexeme_alloc(const char*);
 318 extern char*            lexeme_alloc_size(int);
 319
 320   /* display.c */
 321 extern int              display_print(void);
 322 extern int              display_add(struct expr* exp, int count, char format);
 323 extern int              display_delete(int displaynum);
 324 extern int              display_info(void);
 325 extern int              display_enable(int displaynum, int enable);
 326
 327   /* expr.c */
 328 extern void             expr_free_all(void);
 329 extern struct expr*     expr_alloc_internal_var(const char* name);
 330 extern struct expr*     expr_alloc_symbol(const char* name);
 331 extern struct expr*     expr_alloc_sconstant(int val);
 332 extern struct expr*     expr_alloc_uconstant(unsigned val);
 333 extern struct expr*     expr_alloc_string(const char* str);
 334 extern struct expr*     expr_alloc_binary_op(int oper, struct expr*, struct expr*);
 335 extern struct expr*     expr_alloc_unary_op(int oper, struct expr*);
 336 extern struct expr*     expr_alloc_pstruct(struct expr*, const char* element);
 337 extern struct expr*     expr_alloc_struct(struct expr*, const char* element);
 338 extern struct expr*     expr_alloc_func_call(const char*, int nargs, ...);
 339 extern struct expr*     expr_alloc_typecast(struct type_expr_t*, struct expr*);
 340 extern struct dbg_lvalue expr_eval(struct expr*);
 341 extern struct expr*     expr_clone(const struct expr* exp, BOOL *local_binding);
 342 extern int              expr_free(struct expr* exp);
 343 extern int              expr_print(const struct expr* exp);
 344
 345   /* info.c */
 346 extern void             print_help(void);
 347 extern void             info_help(void);
 348 extern void             info_win32_module(DWORD64 mod);
 349 extern void             info_win32_class(HWND hWnd, const char* clsName);
 350 extern void             info_win32_window(HWND hWnd, BOOL detailed);
 351 extern void             info_win32_processes(void);
 352 extern void             info_win32_threads(void);
 353 extern void             info_win32_exceptions(DWORD tid);
 354 extern void             info_win32_virtual(DWORD pid);
 355 extern void             info_win32_segments(DWORD start, int length);
 356 extern void             info_wine_dbg_channel(BOOL add, const char* chnl, const char* name);
 357
 358   /* memory.c */
 359 extern BOOL             memory_read_value(const struct dbg_lvalue* lvalue, DWORD size, void* result);
 360 extern BOOL             memory_write_value(const struct dbg_lvalue* val, DWORD size, void* value);
 361 extern void             memory_examine(const struct dbg_lvalue *lvalue, int count, char format);
 362 extern void*            memory_to_linear_addr(const ADDRESS64* address);
 363 extern BOOL             memory_get_current_pc(ADDRESS64* address);
 364 extern BOOL             memory_get_current_stack(ADDRESS64* address);
 365 extern BOOL             memory_get_current_frame(ADDRESS64* address);
 366 extern BOOL             memory_get_string(struct dbg_process* pcs, void* addr, BOOL in_debuggee, BOOL unicode, char* buffer, int size);
 367 extern BOOL             memory_get_string_indirect(struct dbg_process* pcs, void* addr, BOOL unicode, char* buffer, int size);
 368 extern BOOL             memory_get_register(DWORD regno, DWORD** value, char* buffer, int len);
 369 extern void             memory_disassemble(const struct dbg_lvalue*, const struct dbg_lvalue*, int instruction_count);
 370 extern BOOL             memory_disasm_one_insn(ADDRESS64* addr);
 371 #define MAX_OFFSET_TO_STR_LEN 19
 372 extern char*            memory_offset_to_string(char *str, DWORD64 offset, unsigned mode);
 373 extern void             print_bare_address(const ADDRESS64* addr);
 374 extern void             print_address(const ADDRESS64* addr, BOOLEAN with_line);
 375 extern void             print_basic(const struct dbg_lvalue* value, int count, char format);
 376
 377   /* source.c */
 378 extern void             source_list(IMAGEHLP_LINE* src1, IMAGEHLP_LINE* src2, int delta);
 379 extern void             source_list_from_addr(const ADDRESS64* addr, int nlines);
 380 extern void             source_show_path(void);
 381 extern void             source_add_path(const char* path);
 382 extern void             source_nuke_path(void);
 383
 384   /* stack.c */
 385 extern void             stack_info(int count);
 386 extern void             stack_backtrace(DWORD threadID);
 387 extern BOOL             stack_set_frame(int newframe);
 388 extern BOOL             stack_get_current_frame(IMAGEHLP_STACK_FRAME* ihsf);
 389 extern BOOL             stack_get_register_current_frame(unsigned regno, DWORD** pval);
 390 extern unsigned         stack_fetch_frames(void);
 391 extern BOOL             stack_get_current_symbol(SYMBOL_INFO* sym);
 392
 393   /* symbol.c */
 394 extern enum sym_get_lval symbol_get_lvalue(const char* name, const int lineno, struct dbg_lvalue* addr, BOOL bp_disp);
 395 extern void             symbol_read_symtable(const char* filename, unsigned long offset);
 396 extern enum dbg_line_status symbol_get_function_line_status(const ADDRESS64* addr);
 397 extern BOOL             symbol_get_line(const char* filename, const char* func, IMAGEHLP_LINE* ret);
 398 extern void             symbol_info(const char* str);
 399 extern void             symbol_print_local(const SYMBOL_INFO* sym, ULONG base, BOOL detailed);
 400 extern int              symbol_info_locals(void);
 401 extern BOOL             symbol_is_local(const char* name);
 402
 403   /* tgt_active.c */
 404 extern void             dbg_run_debuggee(const char* args);
 405 extern void             dbg_wait_next_exception(DWORD cont, int count, int mode);
 406 extern enum dbg_start   dbg_active_attach(int argc, char* argv[]);
 407 extern enum dbg_start   dbg_active_launch(int argc, char* argv[]);
 408 extern enum dbg_start   dbg_active_auto(int argc, char* argv[]);
 409 extern void             dbg_active_wait_for_first_exception(void);
 410 extern BOOL             dbg_attach_debuggee(DWORD pid, BOOL cofe);
 411
 412   /* tgt_minidump.c */
 413 extern void             minidump_write(const char*, const EXCEPTION_RECORD*);
 414 extern enum dbg_start   minidump_reload(int argc, char* argv[]);
 415
 416   /* tgt_module.c */
 417 extern enum dbg_start   tgt_module_load(const char* name, BOOL keep);
 418
 419   /* types.c */
 420 extern void             print_value(const struct dbg_lvalue* addr, char format, int level);
 421 extern int              types_print_type(const struct dbg_type*, BOOL details);
 422 extern int              print_types(void);
 423 extern long int         types_extract_as_integer(const struct dbg_lvalue*);
 424 extern LONGLONG         types_extract_as_longlong(const struct dbg_lvalue*);
 425 extern void             types_extract_as_address(const struct dbg_lvalue*, ADDRESS64*);
 426 extern BOOL             types_deref(const struct dbg_lvalue* value, struct dbg_lvalue* result);
 427 extern BOOL             types_udt_find_element(struct dbg_lvalue* value, const char* name, long int* tmpbuf);
 428 extern BOOL             types_array_index(const struct dbg_lvalue* value, int index, struct dbg_lvalue* result);
 429 extern BOOL             types_get_info(const struct dbg_type*, IMAGEHLP_SYMBOL_TYPE_INFO, void*);
 430 extern BOOL             types_get_real_type(struct dbg_type* type, DWORD* tag);
 431 extern struct dbg_type  types_find_pointer(const struct dbg_type* type);
 432 extern struct dbg_type  types_find_type(unsigned long linear, const char* name, enum SymTagEnum tag);
 433
 434   /* winedbg.c */
 435 extern void             dbg_outputA(const char* buffer, int len);
 436 extern void             dbg_outputW(const WCHAR* buffer, int len);
 437 #ifdef __GNUC__
 438 extern int              dbg_printf(const char* format, ...) __attribute__((format (printf,1,2)));
 439 #else
 440 extern int              dbg_printf(const char* format, ...);
 441 #endif
 442 extern const struct dbg_internal_var* dbg_get_internal_var(const char*);
 443 extern BOOL             dbg_interrupt_debuggee(void);
 444 extern unsigned         dbg_num_processes(void);
 445 extern struct dbg_process* dbg_add_process(const struct be_process_io* pio, DWORD pid, HANDLE h);
 446 extern void             dbg_set_process_name(struct dbg_process* p, const char* name);
 447 extern struct dbg_process* dbg_get_process(DWORD pid);
 448 extern struct dbg_process* dbg_get_process_h(HANDLE handle);
 449 extern void             dbg_del_process(struct dbg_process* p);
 450 struct dbg_thread*      dbg_add_thread(struct dbg_process* p, DWORD tid, HANDLE h, void* teb);
 451 extern struct dbg_thread* dbg_get_thread(struct dbg_process* p, DWORD tid);
 452 extern void             dbg_del_thread(struct dbg_thread* t);
 453 extern BOOL             dbg_get_debuggee_info(HANDLE hProcess, IMAGEHLP_MODULE* imh_mod);
 454
 455   /* gdbproxy.c */
 456 extern int              gdb_main(int argc, char* argv[]);
 457
 458 static inline BOOL dbg_read_memory(const void* addr, void* buffer, size_t len)
 459 {
 460     SIZE_T rlen;
 461     return dbg_curr_process->process_io->read(dbg_curr_process->handle, addr, buffer, len, &rlen) && len == rlen;
 462 }
 463
 464 static inline BOOL dbg_write_memory(void* addr, const void* buffer, size_t len)
 465 {
 466     SIZE_T wlen;
 467     return dbg_curr_process->process_io->write(dbg_curr_process->handle, addr, buffer, len, &wlen) && len == wlen;
 468 }
 469
 470 static inline void* dbg_heap_realloc(void* buffer, size_t size)
 471 {
 472     return (buffer) ? HeapReAlloc(GetProcessHeap(), 0, buffer, size) :
 473         HeapAlloc(GetProcessHeap(), 0, size);
 474 }
 475
 476 extern struct dbg_internal_var          dbg_internal_vars[];
 477 extern const struct dbg_internal_var*   dbg_context_vars;
 478
 479 #define  DBG_IVARNAME(_var)     dbg_internal_var_##_var
 480 #define  DBG_IVARSTRUCT(_var)   dbg_internal_vars[DBG_IVARNAME(_var)]
 481 #define  DBG_IVAR(_var)         (*(DBG_IVARSTRUCT(_var).pval))
 482 #define  INTERNAL_VAR(_var,_val,_ref,itype) DBG_IVARNAME(_var),
 483 enum debug_int_var
 484 {
 485 #include "intvar.h"
 486    DBG_IV_LAST
 487 };
 488 #undef   INTERNAL_VAR
 489
 490 /* include CPU dependent bits */
 491 #include "be_cpu.h"
 492
 493 #endif  /* __WINE_DEBUGGER_H */