debugger/debugger.h

/*
 * Debugger definitions
 *
 * Copyright 1995 Alexandre Julliard
 */

#ifndef __WINE_DEBUGGER_H
#define __WINE_DEBUGGER_H

#include <sys/types.h> /* u_long ... */
#include <assert.h>
#include "windef.h"
#include "winbase.h"
#include "wine/exception.h"

#ifdef __i386__
#define STEP_FLAG 0x00000100 /* single step flag */
#define V86_FLAG  0x00020000
#endif

#define SYM_FUNC	 0x0
#define SYM_DATA	 0x1
#define SYM_WIN32	 0x2
#define SYM_WINE	 0x4
#define SYM_INVALID	 0x8
#define SYM_TRAMPOLINE	 0x10
#define SYM_STEP_THROUGH 0x20

enum	debug_type {DT_BASIC, DT_POINTER, DT_ARRAY, DT_STRUCT, DT_ENUM, 
		    DT_FUNC, DT_BITFIELD};


/*
 * Return values for DEBUG_CheckLinenoStatus.  Used to determine
 * what to do when the 'step' command is given.
 */
#define FUNC_HAS_NO_LINES	(0)
#define NOT_ON_LINENUMBER	(1)
#define AT_LINENUMBER		(2)
#define FUNC_IS_TRAMPOLINE	(3)

/*
 * For constants generated by the parser, we use this datatype
 */
extern struct datatype * DEBUG_TypeShortUInt;
extern struct datatype * DEBUG_TypeInt;
extern struct datatype * DEBUG_TypeIntConst;
extern struct datatype * DEBUG_TypeUSInt;
extern struct datatype * DEBUG_TypeString;

typedef struct
{
    DWORD		seg;  /* 0xffffffff means current default segment (cs or ds) */
    DWORD 		off;
} DBG_ADDR;

typedef struct
{
   struct datatype*	type;
   int			cookie;	/* DV_??? */
/* DV_TARGET references an address in debugger's address space, whereas DV_HOST
 * references the debuggee address space
 */
#	define	DV_TARGET	0xF00D
#	define	DV_HOST		0x50DA
#	define	DV_INVALID      0x0000

   DBG_ADDR		addr;	
} DBG_VALUE;

struct list_id
{
    char * sourcefile;
    int    line;
};

struct  wine_lines {
  unsigned long		line_number;
  DBG_ADDR		pc_offset;
};

struct symbol_info
{
  struct name_hash * sym;
  struct list_id     list;
};

typedef struct wine_lines WineLineNo;

/*
 * This structure holds information about stack variables, function
 * parameters, and register variables, which are all local to this
 * function.
 */
struct  wine_locals {
  unsigned int		regno:8;	/* For register symbols */
  signed int		offset:24;	/* offset from esp/ebp to symbol */
  unsigned int		pc_start;	/* For RBRAC/LBRAC */
  unsigned int		pc_end;		/* For RBRAC/LBRAC */
  char		      * name;		/* Name of symbol */
  struct datatype     * type;		/* Datatype of symbol */
};

typedef struct wine_locals WineLocals;

enum exec_mode
{
    EXEC_CONT,       		/* Continuous execution */
    EXEC_PASS,       		/* Continue, passing exception to app */
    EXEC_STEP_OVER,  		/* Stepping over a call to next source line */
    EXEC_STEP_INSTR,  		/* Step to next source line, stepping in if needed */
    EXEC_STEPI_OVER,  		/* Stepping over a call */
    EXEC_STEPI_INSTR,  		/* Single-stepping an instruction */
    EXEC_FINISH,		/* Step until we exit current frame */
    EXEC_STEP_OVER_TRAMPOLINE, 	/* Step over trampoline.  Requires that
				 * we dig the real return value off the stack
				 * and set breakpoint there - not at the
				 * instr just after the call.
				 */
};

#define	DBG_BREAK 	0
#define	DBG_WATCH 	1

typedef struct
{
    DBG_ADDR      addr;
    WORD	  enabled : 1, 
                  type : 1,
                  is32 : 1,
                  refcount : 13;
    WORD	  skipcount;
    union {
       struct {
	  BYTE          opcode;
	  BOOL		(*func)(void);
       } b;
       struct {
	  BYTE		rw : 1,
	                len : 2;
	  BYTE		reg;
	  DWORD		oldval;
       } w;
    } u;
    struct expr * condition;
} DBG_BREAKPOINT;

enum dbg_mode
{
    MODE_INVALID, MODE_16, MODE_32, MODE_VM86
};



/* Wine extension; Windows doesn't have a name for this code.  This is an
   undocumented exception understood by MS VC debugger, allowing the program
   to name a particular thread.  Search google.com or deja.com for "0x406d1388"
   for more info. */
#define EXCEPTION_NAME_THREAD               0x406D1388

/* Helper structure */
typedef struct tagTHREADNAME_INFO
{
   DWORD   dwType;     /* Must be 0x1000 */
   LPCTSTR szName;     /* Pointer to name - limited to 9 bytes (8 characters + terminator) */
   DWORD   dwThreadID; /* Thread ID (-1 = caller thread) */
   DWORD   dwFlags;    /* Reserved for future use.  Must be zero. */
} THREADNAME_INFO;

typedef struct tagDBG_THREAD {
    struct tagDBG_PROCESS*	process;
    HANDLE			handle;
    DWORD			tid;
    LPVOID			start;
    LPVOID			teb;
    int				wait_for_first_exception;
    enum dbg_mode		dbg_mode;
    enum exec_mode 		dbg_exec_mode;
    int 			dbg_exec_count;
    DBG_BREAKPOINT		stepOverBP;
    char                        name[9];
    struct tagDBG_THREAD* 	next;
    struct tagDBG_THREAD* 	prev;
} DBG_THREAD;

typedef struct tagDBG_DELAYED_BP {
    int				lineno;
    char*			name;
} DBG_DELAYED_BP;

typedef struct tagDBG_PROCESS {
    HANDLE			handle;
    DWORD			pid;
    const char*			imageName;
    DBG_THREAD*			threads;
    int				num_threads;
    unsigned			continue_on_first_exception;
    struct tagDBG_MODULE**	modules;
    int				num_modules;
    unsigned long		dbg_hdr_addr;
    DBG_DELAYED_BP*		delayed_bp;
    int				num_delayed_bp;
    /*
     * This is an index we use to keep track of the debug information
     * when we have multiple sources.  We use the same database to also
     * allow us to do an 'info shared' type of deal, and we use the index
     * to eliminate duplicates.
     */
    int				next_index;
    struct tagDBG_PROCESS*	next;
    struct tagDBG_PROCESS*	prev;
} DBG_PROCESS;

extern	DBG_PROCESS*	DEBUG_CurrProcess;
extern	DBG_THREAD*	DEBUG_CurrThread;
extern	DWORD		DEBUG_CurrTid;
extern	DWORD		DEBUG_CurrPid;
extern  CONTEXT		DEBUG_context;
extern  BOOL		DEBUG_interactiveP;

#define DEBUG_READ_MEM(addr, buf, len) \
      (ReadProcessMemory(DEBUG_CurrProcess->handle, (addr), (buf), (len), NULL))

#define DEBUG_WRITE_MEM(addr, buf, len) \
      (WriteProcessMemory(DEBUG_CurrProcess->handle, (addr), (buf), (len), NULL))

#define DEBUG_READ_MEM_VERBOSE(addr, buf, len) \
      (DEBUG_READ_MEM((addr), (buf), (len)) || (DEBUG_InvalLinAddr( addr ),0))

#define DEBUG_WRITE_MEM_VERBOSE(addr, buf, len) \
      (DEBUG_WRITE_MEM((addr), (buf), (len)) || (DEBUG_InvalLinAddr( addr ),0))

enum DbgInfoLoad {DIL_DEFERRED, DIL_LOADED, DIL_NOINFO, DIL_ERROR};
enum DbgModuleType {DMT_UNKNOWN, DMT_ELF, DMT_NE, DMT_PE};

typedef struct tagDBG_MODULE {
   void*			load_addr;
   unsigned long		size;
   char*			module_name;
   enum DbgInfoLoad		dil;
   enum DbgModuleType		type;
   unsigned short		main : 1;
   short int			dbg_index;
   HMODULE                      handle;
   struct tagMSC_DBG_INFO*	msc_info;
   struct tagELF_DBG_INFO*	elf_info;
} DBG_MODULE;

typedef struct {
   DWORD		val;
   const char*		name;
   LPDWORD		pval;
   struct datatype*	type;
} DBG_INTVAR;

#define	OFFSET_OF(__c,__f)		((int)(((char*)&(((__c*)0)->__f))-((char*)0)))

  /* from winelib.so */
extern void DEBUG_ExternalDebugger(void);

  /* debugger/break.c */
extern void DEBUG_SetBreakpoints( BOOL set );
extern void DEBUG_AddBreakpoint( const DBG_VALUE *addr, BOOL (*func)(void) );
extern void DEBUG_AddBreakpointFromId( const char *name, int lineno );
extern void DEBUG_AddBreakpointFromLineno( int lineno );
extern void DEBUG_AddWatchpoint( const DBG_VALUE *addr, int is_write );
extern void DEBUG_AddWatchpointFromId( const char *name );
extern void DEBUG_CheckDelayedBP( void );
extern void DEBUG_DelBreakpoint( int num );
extern void DEBUG_EnableBreakpoint( int num, BOOL enable );
extern void DEBUG_InfoBreakpoints(void);
extern BOOL DEBUG_HandleTrap(void);
extern BOOL DEBUG_ShouldContinue( DBG_ADDR *addr, DWORD code, enum exec_mode mode,
				  int * count );
extern void DEBUG_SuspendExecution( void );
extern enum exec_mode DEBUG_RestartExecution( enum exec_mode mode, int count );
extern BOOL DEBUG_IsFctReturn(void);
extern int  DEBUG_AddBPCondition(int bpnum, struct expr * exp);

  /* debugger/db_disasm.c */
extern void DEBUG_Disasm( DBG_ADDR *addr, int display );

  /* debugger/dbg.y */
extern BOOL DEBUG_Parser(void);
extern void DEBUG_Exit( DWORD );

  /* debugger/debug.l */
extern void DEBUG_FlushSymbols(void);

  /* debugger/display.c */
extern int DEBUG_DoDisplay(void);
extern int DEBUG_AddDisplay(struct expr * exp, int count, char format);
extern int DEBUG_DoDisplay(void);
extern int DEBUG_DelDisplay(int displaynum);
extern int DEBUG_InfoDisplay(void);

  /* debugger/editline.c */
extern char * readline(const char *);
extern void add_history(char *);

  /* debugger/expr.c */
extern void DEBUG_FreeExprMem(void);
struct expr * DEBUG_IntVarExpr(const char* name);
struct expr * DEBUG_SymbolExpr(const char * name);
struct expr * DEBUG_ConstExpr(int val);
struct expr * DEBUG_StringExpr(const char * str);
struct expr * DEBUG_SegAddr(struct expr *, struct expr *);
struct expr * DEBUG_USConstExpr(unsigned int val);
struct expr * DEBUG_BinopExpr(int oper, struct expr *, struct expr *);
struct expr * DEBUG_UnopExpr(int oper, struct expr *);
struct expr * DEBUG_StructPExpr(struct expr *, const char * element);
struct expr * DEBUG_StructExpr(struct expr *, const char * element);
struct expr * DEBUG_ArrayExpr(struct expr *, struct expr * index);
struct expr * DEBUG_CallExpr(const char *, int nargs, ...);
struct expr * DEBUG_TypeCastExpr(struct datatype *, struct expr *);
extern DBG_VALUE DEBUG_EvalExpr(struct expr *);
extern int DEBUG_DelDisplay(int displaynum);
extern struct expr * DEBUG_CloneExpr(const struct expr * exp);
extern int DEBUG_FreeExpr(struct expr * exp);
extern int DEBUG_DisplayExpr(const struct expr * exp);

  /* debugger/hash.c */
extern struct name_hash * DEBUG_AddSymbol( const char *name, 
					   const DBG_VALUE *addr,
					   const char *sourcefile,
					   int flags);
extern int DEBUG_GetSymbolValue( const char * name, const int lineno,
				 DBG_VALUE *addr, int );
extern BOOL DEBUG_SetSymbolValue( const char * name, const DBG_VALUE *addr );
extern const char * DEBUG_FindNearestSymbol( const DBG_ADDR *addr, int flag,
					     struct name_hash ** rtn,
					     unsigned int ebp,
					     struct list_id * source);
extern void DEBUG_ReadSymbolTable( const char * filename );
extern void DEBUG_AddLineNumber( struct name_hash * func, int line_num, 
				 unsigned long offset );
extern struct wine_locals *
            DEBUG_AddLocal( struct name_hash * func, int regno, 
			    int offset,
			    int pc_start,
			    int pc_end,
			    char * name);
extern int DEBUG_CheckLinenoStatus(const DBG_ADDR *addr);
extern void DEBUG_GetFuncInfo(struct list_id * ret, const char * file, 
			      const char * func);
extern int DEBUG_SetSymbolSize(struct name_hash * sym, unsigned int len);
extern int DEBUG_SetSymbolBPOff(struct name_hash * sym, unsigned int len);
extern int DEBUG_GetSymbolAddr(struct name_hash * sym, DBG_ADDR * addr);
extern int DEBUG_cmp_sym(const void * p1, const void * p2);
extern BOOL DEBUG_GetLineNumberAddr( const struct name_hash *, const int lineno, 
				     DBG_ADDR *addr, int bp_flag );

extern int DEBUG_SetLocalSymbolType(struct wine_locals * sym, 
				    struct datatype * type);
extern BOOL DEBUG_Normalize(struct name_hash * nh );

  /* debugger/info.c */
extern void DEBUG_PrintBasic( const DBG_VALUE* value, int count, char format );
extern struct symbol_info DEBUG_PrintAddress( const DBG_ADDR *addr, 
					      enum dbg_mode mode, int flag );
extern void DEBUG_Help(void);
extern void DEBUG_HelpInfo(void);
extern struct symbol_info DEBUG_PrintAddressAndArgs( const DBG_ADDR *addr, 
						     enum dbg_mode mode,
						     unsigned int ebp, 
						     int flag );
extern void DEBUG_InfoClass(const char* clsName);
extern void DEBUG_WalkClasses(void);
extern void DEBUG_WalkModref(DWORD p);
extern void DEBUG_DumpModule(DWORD mod);
extern void DEBUG_WalkModules(void);
extern void DEBUG_WalkProcess(void);
extern void DEBUG_WalkThreads(void);
extern void DEBUG_DumpQueue(DWORD q);
extern void DEBUG_WalkQueues(void);
extern void DEBUG_InfoSegments(DWORD s, int v);
extern void DEBUG_InfoVirtual(void);
extern void DEBUG_InfoWindow(HWND hWnd);
extern void DEBUG_WalkWindows(HWND hWnd, int indent);

  /* debugger/memory.c */
extern int  DEBUG_ReadMemory( const DBG_VALUE* value );
extern void DEBUG_WriteMemory( const DBG_VALUE* val, int value );
extern void DEBUG_ExamineMemory( const DBG_VALUE *addr, int count, char format);
extern void DEBUG_InvalAddr( const DBG_ADDR* addr );
extern void DEBUG_InvalLinAddr( void* addr );
extern DWORD DEBUG_ToLinear( const DBG_ADDR *address );
extern void DEBUG_GetCurrentAddress( DBG_ADDR * );
extern BOOL DEBUG_GrabAddress( DBG_VALUE* value, BOOL fromCode );
extern enum dbg_mode DEBUG_GetSelectorType( WORD sel );
#ifdef __i386__
extern void DEBUG_FixAddress( DBG_ADDR *address, DWORD def );
extern int  DEBUG_IsSelectorSystem( WORD sel );
#endif

  /* debugger/module.c */
extern int  DEBUG_LoadEntryPoints( const char * prefix );
extern void DEBUG_LoadModule32( const char* name, HANDLE hFile, DWORD base );
extern DBG_MODULE* DEBUG_AddModule(const char* name, enum DbgModuleType type, 
				   void* mod_addr, u_long size, HMODULE hmod);
extern DBG_MODULE* DEBUG_FindModuleByName(const char* name, enum DbgModuleType type);
extern DBG_MODULE* DEBUG_FindModuleByHandle(HANDLE handle, enum DbgModuleType type);
extern DBG_MODULE* DEBUG_FindModuleByAddr(void* addr, enum DbgModuleType type);
extern DBG_MODULE* DEBUG_GetProcessMainModule(DBG_PROCESS* process);
extern DBG_MODULE* DEBUG_RegisterPEModule(HMODULE, u_long load_addr, u_long size, 
					  const char* name);
extern DBG_MODULE* DEBUG_RegisterELFModule(u_long load_addr, u_long size, 
					   const char* name);
extern enum DbgInfoLoad DEBUG_RegisterPEDebugInfo(DBG_MODULE* wmod, HANDLE hFile,
						  void* _nth, unsigned long nth_ofs);
extern void DEBUG_ReportDIL(enum DbgInfoLoad dil, const char* pfx, 
			    const char* filename, DWORD load_addr);
extern void DEBUG_InfoShare(void);

  /* debugger/msc.c */
extern enum DbgInfoLoad DEBUG_RegisterMSCDebugInfo(DBG_MODULE* module, HANDLE hFile, 
						   void* nth, unsigned long nth_ofs);
extern enum DbgInfoLoad DEBUG_RegisterStabsDebugInfo(DBG_MODULE* module, 
						     HANDLE hFile, void* nth, 
						     unsigned long nth_ofs);
extern void DEBUG_InitCVDataTypes(void);

  /* debugger/registers.c */
extern void DEBUG_InfoRegisters(void);
extern BOOL DEBUG_ValidateRegisters(void);

  /* debugger/source.c */
extern void DEBUG_ShowDir(void);
extern void DEBUG_AddPath(const char * path);
extern void DEBUG_List(struct list_id * line1, struct list_id * line2,  
		       int delta);
extern void DEBUG_NukePath(void);
extern void DEBUG_Disassemble(const DBG_VALUE *, const DBG_VALUE*, int offset);
extern BOOL DEBUG_DisassembleInstruction(DBG_ADDR *addr);

  /* debugger/stack.c */
extern void DEBUG_InfoStack(void);
extern void DEBUG_BackTrace(DWORD threadID, BOOL noisy);
extern int  DEBUG_InfoLocals(void);
extern int  DEBUG_SetFrame(int newframe);
extern int  DEBUG_GetCurrentFrame(struct name_hash ** name, 
				  unsigned int * eip,
				  unsigned int * ebp);

  /* debugger/stabs.c */
extern enum DbgInfoLoad DEBUG_ReadExecutableDbgInfo(const char* exe_name);
extern enum DbgInfoLoad DEBUG_ParseStabs(char * addr, unsigned int load_offset, 
					 unsigned int staboff, int stablen, 
					 unsigned int strtaboff, int strtablen);

  /* debugger/types.c */
extern int DEBUG_nchar;
extern void DEBUG_InitTypes(void);
extern struct datatype * DEBUG_NewDataType(enum debug_type xtype, 
					   const char * typename);
extern unsigned int DEBUG_TypeDerefPointer(const DBG_VALUE *value, 
					   struct datatype ** newtype);
extern int DEBUG_AddStructElement(struct datatype * dt, 
				  char * name, struct datatype * type, 
				  int offset, int size);
extern int DEBUG_SetStructSize(struct datatype * dt, int size);
extern int DEBUG_SetPointerType(struct datatype * dt, struct datatype * dt2);
extern int DEBUG_SetArrayParams(struct datatype * dt, int min, int max,
				struct datatype * dt2);
extern void DEBUG_Print( const DBG_VALUE *addr, int count, char format, int level );
extern unsigned int DEBUG_FindStructElement(DBG_VALUE * addr, 
					    const char * ele_name, int * tmpbuf);
extern struct datatype * DEBUG_GetPointerType(struct datatype * dt);
extern int DEBUG_GetObjectSize(struct datatype * dt);
extern unsigned int DEBUG_ArrayIndex(const DBG_VALUE * addr, DBG_VALUE * result, 
				     int index);
extern struct datatype * DEBUG_FindOrMakePointerType(struct datatype * reftype);
extern long long int DEBUG_GetExprValue(const DBG_VALUE * addr, char ** format);
extern int DEBUG_SetBitfieldParams(struct datatype * dt, int offset, 
				   int nbits, struct datatype * dt2);
extern int DEBUG_CopyFieldlist(struct datatype * dt, struct datatype * dt2);
extern enum debug_type DEBUG_GetType(struct datatype * dt);
extern struct datatype * DEBUG_TypeCast(enum debug_type, const char *);
extern int DEBUG_PrintTypeCast(const struct datatype *);
extern int DEBUG_PrintType( const DBG_VALUE* addr );

  /* debugger/winedbg.c */
#define DBG_CHN_MESG	1
#define DBG_CHN_ERR	2
#define DBG_CHN_WARN	4
#define DBG_CHN_FIXME	8
#define DBG_CHN_TRACE	16
extern void	DEBUG_Output(int chn, const char* buffer, int len);
#ifdef __GNUC__
extern int	DEBUG_Printf(int chn, const char* format, ...) __attribute__((format (printf,2,3)));           
#else
extern int	DEBUG_Printf(int chn, const char* format, ...);
#endif
extern DBG_INTVAR*	DEBUG_GetIntVar(const char*);
extern BOOL DEBUG_Attach(DWORD pid, BOOL cofe);
extern void DEBUG_Run(const char* args);
extern DBG_PROCESS* 	DEBUG_GetProcess(DWORD pid);
extern DBG_THREAD* 	DEBUG_GetThread(DBG_PROCESS* p, DWORD tid);
extern int curr_frame;

/* Choose your allocator! */
#if 1
/* this one is libc's fast one */
extern void*	DEBUG_XMalloc(size_t size);
extern void*	DEBUG_XReAlloc(void *ptr, size_t size);
extern char*	DEBUG_XStrDup(const char *str);

#define DBG_alloc(x)		DEBUG_XMalloc(x)
#define DBG_realloc(x,y) 	DEBUG_XReAlloc(x,y)
#define DBG_free(x) 		free(x)
#define DBG_strdup(x) 		DEBUG_XStrDup(x)
#else
/* this one is slow (takes 5 minutes to load the debugger on my machine),
   but is pretty crash-proof (can step through malloc() without problems,
   malloc() arena (and other heaps) can be totally wasted and it'll still
   work, etc... if someone could make optimized routines so it wouldn't
   take so long to load, it could be made default) */
#define DBG_alloc(x) HeapAlloc(dbg_heap,0,x)
#define DBG_realloc(x,y) HeapRealloc(dbg_heap,0,x,y)
#define DBG_free(x) HeapFree(dbg_heap,0,x)
inline static LPSTR DBG_strdup( LPCSTR str )
{
    INT len = strlen(str) + 1;
    LPSTR p = DBG_alloc( len );
    if (p) memcpy( p, str, len );
    return p;
}
#define DBG_need_heap
extern HANDLE dbg_heap;
#endif

#define	DEBUG_STATUS_OFFSET		0x80003000
#define	DEBUG_STATUS_INTERNAL_ERROR	(DEBUG_STATUS_OFFSET+0)
#define	DEBUG_STATUS_NO_SYMBOL		(DEBUG_STATUS_OFFSET+1)
#define	DEBUG_STATUS_DIV_BY_ZERO	(DEBUG_STATUS_OFFSET+2)
#define	DEBUG_STATUS_BAD_TYPE		(DEBUG_STATUS_OFFSET+3)

extern DBG_INTVAR		DEBUG_IntVars[];

#define  DBG_IVARNAME(_var)	DEBUG_IV_##_var
#define  DBG_IVARSTRUCT(_var)	DEBUG_IntVars[DBG_IVARNAME(_var)]
#define  DBG_IVAR(_var)		(*(DBG_IVARSTRUCT(_var).pval))
#define  INTERNAL_VAR(_var,_val,_ref,_typ) DBG_IVARNAME(_var),
enum debug_int_var {
#include "intvar.h"
   DBG_IV_LAST
};
#undef   INTERNAL_VAR

#endif  /* __WINE_DEBUGGER_H */