{ Copyright (c) 1998 by Peter Vreman Lowlevel GDB interface which communicates directly with libgdb See the file COPYING.FPC, included in this distribution, for details about the copyright. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. **********************************************************************} unit GdbInt; {$i gdbver.inc} interface {$smartlink off} {.$define Verbose} {.$define DebugCommand} {$define NotImplemented} { Is create_breakpoint_hook deprecated? } { Seem not so for 6.1 } {$define GDB_HAS_DEPRECATED_CBPH} { 6.1.x } {$ifdef GDB_V601} {$info using gdb 6.1.x} {$define GDB_V6} {$define GDB_HAS_DB_COMMANDS} {$undef GDB_HAS_DEPRECATED_CBPH} {$endif def GDB_V601} { 6.2.x } {$ifdef GDB_V602} {$info using gdb 6.2.x} {$define GDB_V6} {$define GDB_HAS_DB_COMMANDS} {$endif def GDB_V602} { 6.3.x } {$ifdef GDB_V603} {$info using gdb 6.3.x} {$define GDB_V6} {$define GDB_HAS_DB_COMMANDS} {$endif def GDB_V603} { 6.4.x } {$ifdef GDB_V604} {$info using gdb 6.4.x} {$define GDB_V6} {$define GDB_NEEDS_NO_ERROR_INIT} {$define GDB_HAS_DB_COMMANDS} {$endif def GDB_V604} { 6.5.x } {$ifdef GDB_V605} {$info using gdb 6.5.x} {$define GDB_V6} {$define GDB_NEEDS_NO_ERROR_INIT} {$endif def GDB_V605} { 6.6.x } {$ifdef GDB_V606} {$info using gdb 6.6.x} {$define GDB_V6} {$define GDB_HAS_DB_COMMANDS} {$define GDB_NEEDS_NO_ERROR_INIT} {$define GDB_USES_EXPAT_LIB} {$endif def GDB_V605} {$ifdef GDB_V6} {$define GDB_HAS_SYSROOT} {$define GDB_HAS_DB_COMMANDS} {$define GDB_SYMTAB_HAS_MACROS} {$define GDB_INIT_HAS_ARGV0} {$endif GDB_V6} { GDB has a simulator for powerpc CPU it is integrated into GDB by default } {$ifdef cpupowerpc} {$define GDB_HAS_SIM} {$endif cpupowerpc} {$ifdef go32v2} {$undef NotImplemented} {$LINKLIB gdb} {$ifdef GDB_HAS_SIM} {$LINKLIB sim} {$endif GDB_HAS_SIM} {$LINKLIB bfd} {$LINKLIB readline} {$LINKLIB opcodes} {$LINKLIB history} {$LINKLIB iberty} {$LINKLIB intl} {$LINKLIB dbg} {$LINKLIB c} {$endif go32v2} {$ifdef linux} {$undef NotImplemented} {$LINKLIB libgdb.a} {$ifdef GDB_HAS_SIM} {$LINKLIB libsim.a} {$endif GDB_HAS_SIM} {$LINKLIB libbfd.a} {$LINKLIB libreadline.a} {$LINKLIB libopcodes.a} {$LINKLIB libhistory.a} {$LINKLIB libiberty.a} {$ifdef GDB_USES_EXPAT_LIB} {$LINKLIB expat} {$endif GDB_USES_EXPAT_LIB} {$LINKLIB ncurses} {$LINKLIB m} {$LINKLIB dl} {$LINKLIB c} {$LINKLIB gcc} {$endif linux} {$ifdef freebsd} {$ifdef FreeBSD5} //5.4+ ? {$linklib kvm} {$endif} {$undef NotImplemented} {$LINKLIB gdb} {$ifdef GDB_HAS_SIM} {$LINKLIB sim} {$endif GDB_HAS_SIM} {$LINKLIB bfd} {$LINKLIB readline} {$LINKLIB opcodes} {$LINKLIB history} {$LINKLIB iberty} {$LINKLIB ncurses} {$LINKLIB m} {$LINKLIB iberty} {$LINKLIB intl} { does not seem to exist on netbsd LINKLIB dl, but I use GDB CVS snapshots for the *BSDs} {$ifdef GDB_USES_EXPAT_LIB} {$LINKLIB expat} {$endif GDB_USES_EXPAT_LIB} {$LINKLIB c} {$LINKLIB gcc} {$endif freebsd} {$ifdef netbsd} {$undef NotImplemented} {$LINKLIB gdb} {$ifdef GDB_HAS_SIM} {$LINKLIB sim} {$endif GDB_HAS_SIM} {$LINKLIB bfd} {$LINKLIB readline} {$LINKLIB opcodes} {$LINKLIB history} {$LINKLIB iberty} {$LINKLIB ncurses} {$LINKLIB m} {$LINKLIB iberty} {$LINKLIB intl} {$ifdef GDB_USES_EXPAT_LIB} {$LINKLIB expat} {$endif GDB_USES_EXPAT_LIB} { does not seem to exist on netbsd LINKLIB dl} {$LINKLIB c} {$LINKLIB gcc} {$endif netbsd} {$ifdef openbsd} {$undef NotImplemented} {$LINKLIB gdb} {$ifdef GDB_HAS_SIM} {$LINKLIB sim} {$endif GDB_HAS_SIM} {$LINKLIB bfd} {$LINKLIB readline} {$LINKLIB opcodes} {$LINKLIB history} {$LINKLIB iberty} {$LINKLIB ncurses} {$LINKLIB m} {$LINKLIB iberty} {$LINKLIB intl} {$ifdef GDB_USES_EXPAT_LIB} {$LINKLIB expat} {$endif GDB_USES_EXPAT_LIB} { does not seem to exist on netbsd LINKLIB dl} {$LINKLIB c} {$LINKLIB gcc} {$endif netbsd} {$ifdef win32} {$undef NotImplemented} {$LINKLIB libgdb.a} {$ifdef GDB_HAS_SIM} {$LINKLIB libsim.a} {$endif GDB_HAS_SIM} {$LINKLIB libbfd.a} {$LINKLIB libreadline.a} {$LINKLIB libopcodes.a} {$LINKLIB libhistory.a} {$LINKLIB libiberty.a} {$LINKLIB libintl.a} {$LINKLIB libiconv.a} {$LINKLIB libncurses.a} {$ifdef GDB_USES_EXPAT_LIB} {$LINKLIB expat} {$endif GDB_USES_EXPAT_LIB} {$LINKLIB gcc} {$LINKLIB cygwin} { alias of libm.a and libc.a } {$LINKLIB imagehlp} {$LINKLIB kernel32} {$LINKLIB user32} {$endif win32} {$ifdef go32v2} {$define supportexceptions} {$endif go32v2} {$ifdef unix} {$define supportexceptions} {$endif unix} {$ifdef CROSSGDB} { do we need something special if cross GDB? } {$endif CROSSGDB} {$ifdef NotImplemented} {$fatal This OS is not yet supported !!!} {$endif NotImplemented} {$packrecords C} type psyminfo=^tsyminfo; tsyminfo=record address : ptrint; fname : pchar; line : longint; funcname : pchar; offset : ptrint; end; tframeentry = object file_name : pchar; function_name : pchar; args : pchar; line_number : longint; address : ptrint; level : longint; constructor init; destructor done; procedure reset; procedure clear; end; pframeentry=^tframeentry; ppframeentry=^pframeentry; { needed for handles } {not anymore I textrec.inc} const k=1; type {$if defined(CPUSPARC) and defined(LINUX)} CORE_ADDR = qword; {$else} CORE_ADDR = ptrint; { might be target dependent PM } {$endif} streamtype = (afile,astring); C_FILE = ptrint; { at least under DJGPP } P_C_FILE = ^C_FILE; type pui_file = ^ui_file; ui_file_flush_ftype = procedure(stream : pui_file);cdecl; ui_file_write_ftype = procedure(stream : pui_file;buf : pchar;len : longint);cdecl; ui_file_fputs_ftype = procedure(buf : pchar; stream : pui_file);cdecl; ui_file_delete_ftype = procedure(stream : pui_file);cdecl; ui_file_isatty_ftype = function(stream : pui_file) : longbool;cdecl; ui_file_rewind_ftype = procedure(stream : pui_file);cdecl; ui_file_put_method_ftype = procedure(var _object; buffer : pchar;length_buffer : longint);cdecl; ui_file_put_ftype = procedure(stream : pui_file;method : ui_file_put_method_ftype;var context);cdecl; {$ifdef GDB_V6} ui_file_read_ftype = function (stream : pui_file; buffer : pchar; len : longint):longint;cdecl; {$endif} ui_file = record magic : plongint; to_flush : ui_file_flush_ftype; to_write : ui_file_write_ftype; to_fputs : ui_file_fputs_ftype; {$ifdef GDB_V6} to_read : ui_file_read_ftype; {$endif} to_delete : ui_file_delete_ftype; to_isatty : ui_file_isatty_ftype; to_rewind : ui_file_rewind_ftype; to_put : ui_file_put_ftype; to_data : pointer; end; { used to delete stdio_ui_file gdb_stdout and gdb_stderr } procedure ui_file_delete(stream : pui_file);cdecl;external; { used to recreate gdb_stdout and gdb_stderr as memory streams } function mem_fileopen : pui_file;cdecl;external; { used to change the write procvar to ours } procedure set_ui_file_write(stream : pui_file;write : ui_file_write_ftype);cdecl;external; type (* struct ptid { /* Process id */ int pid; /* Lightweight process id */ long lwp; /* Thread id */ long tid; }; *) pinferior_ptid = ^tinferior_ptid; tinferior_ptid = record pid : longint{C int}; lwp : ptrint{ C long}; tid : ptrint{ C long}; end; {$ifdef win32} type { from sys/reent.h real structure is bigger but only std.. are wanted here PM } REENT = record err : longint; stdin,stdout,stderr : P_C_FILE; end; PREENT = ^REENT; var _impure_ptr : PREENT;cvar;external; {$endif win32} type tgdbbuffer=object buf : pchar; size, idx : longint; gdb_file : pui_file; constructor Init; destructor Done; procedure Reset; procedure Resize(nsize : longint); procedure Append(p:pchar); procedure lappend(p:pchar;len : longint); end; pgdbinterface=^tgdbinterface; tgdbinterface=object gdberrorbuf, gdboutputbuf : tgdbbuffer; got_error, reset_command, call_reset, signaled, Debuggee_started : boolean; { frames and frame info while recording a frame } frames : ppframeentry; frame_size, frame_count : longint; record_frames, frame_begin_seen : boolean; frame_level, command_level, stop_breakpoint_number, current_address, current_line_number, signal_start, signal_end, signal_name_start, signal_name_end, error_start, error_end, function_start, function_end, args_start, args_end, file_start, file_end, line_start, line_end : longint; signal_name, signal_string : pchar; current_pc : CORE_ADDR; { breakpoint } last_breakpoint_number, last_breakpoint_address, last_breakpoint_line : longint; last_breakpoint_file : pchar; invalid_breakpoint_line : boolean; { init } constructor init; destructor done; { Lowlevel } function error:boolean; function error_num:longint; procedure gdb_command(const s:string); procedure gdb__init; procedure gdb_done; procedure resize_frames; function add_frameentry:pframeentry; function get_frameentry(level : longint):pframeentry; function get_current_frame : ptrint; function set_current_frame(level : longint) : boolean; procedure clear_frames; { Highlevel } user_screen_shown, switch_to_user : boolean; procedure GetAddrSyminfo(addr:ptrint;var si:tsyminfo); procedure SelectSourceline(fn:pchar;line:longint); procedure StartSession; procedure BreakSession; procedure EndSession(code:longint); procedure DebuggerScreen; procedure UserScreen; { Hooks } procedure DoSelectSourceline(const fn:string;line:longint);virtual; procedure DoStartSession;virtual; procedure DoBreakSession;virtual; procedure DoEndSession(code:longint);virtual; procedure DoUserSignal;virtual; procedure DoDebuggerScreen;virtual; procedure DoUserScreen;virtual; function AllowQuit : boolean;virtual; end; const use_gdb_file : boolean = false; var curr_gdb : pgdbinterface; gdb_file : text; inferior_ptid : tinferior_ptid;cvar;external; function GDBVersion : string; function inferior_pid : longint; {$ifdef GDB_V6} type ui_out = pointer; var uiout : ui_out;cvar;external; function cli_out_new (stream : pui_file):ui_out;cdecl;external; {$endif} {$ifdef go32v2} { needed to be sure %fs contains the DOS memory selector used in Mem[] code PM } procedure reload_fs; {$endif go32v2} implementation uses {$ifdef win32} initc, {$endif win32} {$ifdef unix} baseunix, {$endif} {$ifdef go32v2} go32, dpmiexcp, initc, {$endif} strings; {***************************************************************************** Types used by libgdb.a *****************************************************************************} {$ifdef go32v2} type jmp_buf = dpmi_jmp_buf; pjmp_buf = pdpmi_jmp_buf; function setjmp(var rec : jmp_buf) : longint;cdecl;external; procedure longjmp(var rec : jmp_buf;return_value : longint);cdecl;external; procedure reload_fs;assembler; asm movw dosmemselector,%ax movw %ax,%fs end['EAX']; {$endif} {$ifdef win32} type jmp_buf = record case byte of 0 : { greatest value found in cygwin machine/setjmp.h for i386 } (unknown_field : array [1..13] of longint;); 1 : (eax,ebx,ecx,edx : longint; esi,edi,ebp,esp,eip : longint;); end; pjmp_buf = ^jmp_buf; function setjmp(var rec : jmp_buf) : longint;cdecl;external; procedure longjmp(var rec : jmp_buf;return_value : longint);cdecl;external; {$ifndef supportexceptions} type { I don't think FPC would accept that the funcvar return type is the funcvar type itself ! PM } SignalHandler = Procedure(Sig : LongInt);cdecl; function signal(sig : longint;new_signal : SignalHandler) : SignalHandler;cdecl;external; {define supportexceptions not yet working } {$endif now exceptions are supported for win32} {$endif win32} type pCORE_ADDR = ^CORE_ADDR; pblock = ^block; tlanguage = (language_unknown,language_auto,language_c, language_cplus,language_java,language_chill, language_fortran,language_m2,language_asm, language_scm,language_pascal,language_objc); bptype = (bp_breakpoint,bp_hardware_breakpoint, bp_until,bp_finish,bp_watchpoint,bp_hardware_watchpoint, bp_read_watchpoint,bp_access_watchpoint, bp_longjmp,bp_longjmp_resume,bp_step_resume, bp_through_sigtramp,bp_watchpoint_scope, bp_call_dummy,bp_shlib_event); tenable = (disabled,enabled,shlib_disabled); bpdisp = (del,del_at_next_stop,disable,donttouch); {$PACKRECORDS 4} pbreakpoint = ^breakpoint; breakpoint = record next : pbreakpoint; typ : bptype; enable : tenable; disposition : bpdisp; number : longint; address : CORE_ADDR; line_number : longint; source_file : pchar; silent : byte; ignore_count : longint; shadow_contents : array[0..15] of char; inserted : char; duplicate : char; commands : pointer; {^command_line} frame : CORE_ADDR; cond : pointer; {^expression} addr_string : ^char; language : tlanguage; input_radix : longint; cond_string : ^char; exp_string : ^char; exp : pointer; {^expression} exp_valid_block : pblock; {^block;} val : pointer; {value_ptr;} val_chain : pointer; {value_ptr;} related_breakpoint : pbreakpoint; watchpoint_frame : CORE_ADDR; thread : longint; hit_count : longint; section : pointer; {^asection} end; tfreecode=(free_nothing,free_contents,free_linetable); psymtab = ^symtab; symtab = record next : psymtab; blockvector : pointer; {^blockvector;} linetable : pointer; {^linetable;} block_line_section : longint; primary : longint; {$ifdef GDB_SYMTAB_HAS_MACROS} { new field added in the middle :( } macro_table : pointer; {$endif GDB_SYMTAB_HAS_MACROS} filename : pchar; dirname : pchar; free_code : tfreecode; free_ptr : pchar; nlines : longint; line_charpos : ^longint; language : tlanguage; Debugformat : pchar; version : pchar; fullname : pchar; objfile : pointer; {^objfile;} end; psymtab_and_line = ^symtab_and_line; symtab_and_line = record symtab : psymtab; section : pointer; {^asection;} line : longint; pc : CORE_ADDR; _end : CORE_ADDR; end; symtabs_and_lines = record sals : ^symtab_and_line; nelts : longint; end; psymbol = ^symbol; pminimal_symbol = ^minimal_symbol; general_symbol_info = record (* Name of the symbol. This is a required field. Storage for the name is allocated on the psymbol_obstack or symbol_obstack for the associated objfile. *) _name : pchar; (* Value of the symbol. Which member of this union to use, and what it means, depends on what kind of symbol this is and its SYMBOL_CLASS. See comments there for more details. All of these are in host byte order (though what they point to might be in target byte order, e.g. LOC_CONST_BYTES). *) value : record case integer of (* The fact that this is a long not a LONGEST mainly limits the range of a LOC_CONST. Since LOC_CONST_BYTES exists, I'm not sure that is a big deal. *) 0 : (ivalue : longint;); 1 : (block : pblock;); 2 : (bytes : pchar;); 3 : (address : CORE_ADDR;); (* for opaque typedef struct chain *) 4 : (chain : psymbol;); end; (* Since one and only one language can apply, wrap the language specific information inside a union. *) (* union { struct cplus_specific /* For C++ */ /* and Java */ { char *demangled_name; } cplus_specific; struct chill_specific /* For Chill */ { char *demangled_name; } chill_specific; } language_specific; *) demangled_name : pchar; (* Record the source code language that applies to this symbol. This is used to select one of the fields from the language specific union above. *) language : tlanguage; (* Which section is this symbol in? This is an index into section_offsets for this objfile. Negative means that the symbol does not get relocated relative to a section. Disclaimer: currently this is just used for xcoff, so don't expect all symbol-reading code to set it correctly (the ELF code also tries to set it correctly). *) section : word; (* The bfd section associated with this symbol. *) bfd_section : pointer {^asection}; end; { of general_symbol_info record declaration } tminimal_symbol_type = ( mst_unknown := 0, (* Unknown type, the default *) mst_text, (* Generally executable instructions *) mst_data, (* Generally initialized data *) mst_bss, (* Generally uninitialized data *) mst_abs, (* Generally absolute (nonrelocatable) *) (* GDB uses mst_solib_trampoline for the start address of a shared library trampoline entry. Breakpoints for shared library functions are put there if the shared library is not yet loaded. After the shared library is loaded, lookup_minimal_symbol will prefer the minimal symbol from the shared library (usually a mst_text symbol) over the mst_solib_trampoline symbol, and the breakpoints will be moved to their true address in the shared library via breakpoint_re_set. *) mst_solib_trampoline, (* Shared library trampoline code *) (* For the mst_file* types, the names are only guaranteed to be unique within a given .o file. *) mst_file_text, (* Static version of mst_text *) mst_file_data, (* Static version of mst_data *) mst_file_bss (* Static version of mst_bss *) ); namespace_enum = ( (* UNDEF_NAMESPACE is used when a namespace has not been discovered or none of the following apply. This usually indicates an error either in the symbol information or in gdb's handling of symbols. *) UNDEF_NAMESPACE, (* VAR_NAMESPACE is the usual namespace. In C, this contains variables, function names, typedef names and enum type values. *) VAR_NAMESPACE, (* STRUCT_NAMESPACE is used in C to hold struct, union and enum type names. Thus, if `struct foo' is used in a C program, it produces a symbol named `foo' in the STRUCT_NAMESPACE. *) STRUCT_NAMESPACE, (* LABEL_NAMESPACE may be used for names of labels (for gotos); currently it is not used and labels are not recorded at all. *) LABEL_NAMESPACE, (* Searching namespaces. These overlap with VAR_NAMESPACE, providing some granularity with the search_symbols function. *) (* Everything in VAR_NAMESPACE minus FUNCTIONS_-, TYPES_-, and METHODS_NAMESPACE *) VARIABLES_NAMESPACE, (* All functions -- for some reason not methods, though. *) FUNCTIONS_NAMESPACE, (* All defined types *) TYPES_NAMESPACE, (* All class methods -- why is this separated out? *) METHODS_NAMESPACE ); address_class = ( (* Not used; catches errors *) LOC_UNDEF, (* Value is constant int SYMBOL_VALUE, host byteorder *) LOC_CONST, (* Value is at fixed address SYMBOL_VALUE_ADDRESS *) LOC_STATIC, (* Value is in register. SYMBOL_VALUE is the register number. *) LOC_REGISTER, (* It's an argument; the value is at SYMBOL_VALUE offset in arglist. *) LOC_ARG, (* Value address is at SYMBOL_VALUE offset in arglist. *) LOC_REF_ARG, (* Value is in register number SYMBOL_VALUE. Just like LOC_REGISTER except this is an argument. Probably the cleaner way to handle this would be to separate address_class (which would include separate ARG and LOCAL to deal with FRAME_ARGS_ADDRESS versus FRAME_LOCALS_ADDRESS), and an is_argument flag. For some symbol formats (stabs, for some compilers at least), the compiler generates two symbols, an argument and a register. In some cases we combine them to a single LOC_REGPARM in symbol reading, but currently not for all cases (e.g. it's passed on the stack and then loaded into a register). *) LOC_REGPARM, (* Value is in specified register. Just like LOC_REGPARM except the register holds the address of the argument instead of the argument itself. This is currently used for the passing of structs and unions on sparc and hppa. It is also used for call by reference where the address is in a register, at least by mipsread.c. *) LOC_REGPARM_ADDR, (* Value is a local variable at SYMBOL_VALUE offset in stack frame. *) LOC_LOCAL, (* Value not used; definition in SYMBOL_TYPE. Symbols in the namespace STRUCT_NAMESPACE all have this class. *) LOC_TYPEDEF, (* Value is address SYMBOL_VALUE_ADDRESS in the code *) LOC_LABEL, (* In a symbol table, value is SYMBOL_BLOCK_VALUE of a `struct block'. In a partial symbol table, SYMBOL_VALUE_ADDRESS is the start address of the block. Function names have this class. *) LOC_BLOCK, (* Value is a constant byte-sequence pointed to by SYMBOL_VALUE_BYTES, in target byte order. *) LOC_CONST_BYTES, (* Value is arg at SYMBOL_VALUE offset in stack frame. Differs from LOC_LOCAL in that symbol is an argument; differs from LOC_ARG in that we find it in the frame (FRAME_LOCALS_ADDRESS), not in the arglist (FRAME_ARGS_ADDRESS). Added for i960, which passes args in regs then copies to frame. *) LOC_LOCAL_ARG, (* Value is at SYMBOL_VALUE offset from the current value of register number SYMBOL_BASEREG. This exists mainly for the same things that LOC_LOCAL and LOC_ARG do; but we need to do this instead because on 88k DWARF gives us the offset from the frame/stack pointer, rather than the offset from the "canonical frame address" used by COFF, stabs, etc., and we don't know how to convert between these until we start examining prologues. Note that LOC_BASEREG is much less general than a DWARF expression. We don't need the generality (at least not yet), and storing a general DWARF expression would presumably take up more space than the existing scheme. *) LOC_BASEREG, (* Same as LOC_BASEREG but it is an argument. *) LOC_BASEREG_ARG, (* Value is at fixed address, but the address of the variable has to be determined from the minimal symbol table whenever the variable is referenced. This happens if debugging information for a global symbol is emitted and the corresponding minimal symbol is defined in another object file or runtime common storage. The linker might even remove the minimal symbol if the global symbol is never referenced, in which case the symbol remains unresolved. *) LOC_UNRESOLVED, (* Value is at a thread-specific location calculated by a target-specific method. *) LOC_THREAD_LOCAL_STATIC, (* The variable does not actually exist in the program. The value is ignored. *) LOC_OPTIMIZED_OUT, (* The variable is static, but actually lives at * (address). * I.e. do an extra indirection to get to it. * This is used on HP-UX to get at globals that are allocated * in shared libraries, where references from images other * than the one where the global was allocated are done * with a level of indirection. *) LOC_INDIRECT ); minimal_symbol = record (* The general symbol info required for all types of symbols. The SYMBOL_VALUE_ADDRESS contains the address that this symbol corresponds to. *) ginfo : general_symbol_info; (* The info field is available for caching machine-specific information so it doesn't have to rederive the info constantly (over a serial line). It is initialized to zero and stays that way until target-dependent code sets it. Storage for any data pointed to by this field should be allo- cated on the symbol_obstack for the associated objfile. The type would be "void *" except for reasons of compatibility with older compilers. This field is optional. Currently, the AMD 29000 tdep.c uses it to remember things it has decoded from the instructions in the function header, and the MIPS-16 code uses it to identify 16-bit procedures. *) info : pchar; {$ifdef SOFUN_ADDRESS_MAYBE_MISSING} (* Which source file is this symbol in? Only relevant for mst_file_*. *) filename : pchar; {$endif} (* Classification types for this symbol. These should be taken as "advisory only", since if gdb can't easily figure out a classification it simply selects mst_unknown. It may also have to guess when it can't figure out which is a better match between two types (mst_data versus mst_bss) for example. Since the minimal symbol info is sometimes derived from the BFD library's view of a file, we need to live with what information bfd supplies. *) minimal_symbol_type : tminimal_symbol_type; end{ of minimal_symbol}; block = record (* Addresses in the executable code that are in this block. *) startaddr, endaddr : CORE_ADDR ; (* The symbol that names this block, if the block is the body of a function; otherwise, zero. *) _function : psymbol; (* The `struct block' for the containing block, or 0 if none. The superblock of a top-level local block (i.e. a function in the case of C) is the STATIC_BLOCK. The superblock of the STATIC_BLOCK is the GLOBAL_BLOCK. *) superblock : pblock; (* Version of GCC used to compile the function corresponding to this block, or 0 if not compiled with GCC. When possible, GCC should be compatible with the native compiler, or if that is not feasible, the differences should be fixed during symbol reading. As of 16 Apr 93, this flag is never used to distinguish between gcc2 and the native compiler. If there is no function corresponding to this block, this meaning of this flag is undefined. *) gcc_compile_flag : byte; (* Number of local symbols. *) nsyms : longint; (* The symbols. If some of them are arguments, then they must be in the order in which we would like to print them. *) sym : array [0..0] of psymbol; end { of block definition }; symbol = record (* The general symbol info required for all types of symbols. *) ginfo : general_symbol_info; (* Data type of value *) _type : pointer{ptype}; (* Name space code. *) namespace : namespace_enum; (* Address class *) aclass : address_class; (* Line number of definition. FIXME: Should we really make the assumption that nobody will try to debug files longer than 64K lines? What about machine generated programs? *) line : word; (* Some symbols require an additional value to be recorded on a per- symbol basis. Stash those values here. *) (*union { /* Used by LOC_BASEREG and LOC_BASEREG_ARG. */ short basereg; } *) aux_value_base_reg : word; (* Link to a list of aliases for this symbol. Only a "primary/main symbol may have aliases. *) aliases : pointer{palias_list}; (* List of ranges where this symbol is active. This is only used by alias symbols at the current time. *) ranges : pointer{prange_list}; end; target_signal = (TARGET_SIGNAL_FIRST := 0, TARGET_SIGNAL_HUP := 1,TARGET_SIGNAL_INT := 2, TARGET_SIGNAL_QUIT := 3,TARGET_SIGNAL_ILL := 4, TARGET_SIGNAL_TRAP := 5,TARGET_SIGNAL_ABRT := 6, TARGET_SIGNAL_EMT := 7,TARGET_SIGNAL_FPE := 8, TARGET_SIGNAL_KILL := 9,TARGET_SIGNAL_BUS := 10, TARGET_SIGNAL_SEGV := 11,TARGET_SIGNAL_SYS := 12, TARGET_SIGNAL_PIPE := 13,TARGET_SIGNAL_ALRM := 14, TARGET_SIGNAL_TERM := 15,TARGET_SIGNAL_URG := 16, TARGET_SIGNAL_STOP := 17,TARGET_SIGNAL_TSTP := 18, TARGET_SIGNAL_CONT := 19,TARGET_SIGNAL_CHLD := 20, TARGET_SIGNAL_TTIN := 21,TARGET_SIGNAL_TTOU := 22, TARGET_SIGNAL_IO := 23,TARGET_SIGNAL_XCPU := 24, TARGET_SIGNAL_XFSZ := 25,TARGET_SIGNAL_VTALRM := 26, TARGET_SIGNAL_PROF := 27,TARGET_SIGNAL_WINCH := 28, TARGET_SIGNAL_LOST := 29,TARGET_SIGNAL_USR1 := 30, TARGET_SIGNAL_USR2 := 31,TARGET_SIGNAL_PWR := 32, TARGET_SIGNAL_POLL := 33,TARGET_SIGNAL_WIND := 34, TARGET_SIGNAL_PHONE := 35,TARGET_SIGNAL_WAITING := 36, TARGET_SIGNAL_LWP := 37,TARGET_SIGNAL_DANGER := 38, TARGET_SIGNAL_GRANT := 39,TARGET_SIGNAL_RETRACT := 40, TARGET_SIGNAL_MSG := 41,TARGET_SIGNAL_SOUND := 42, TARGET_SIGNAL_SAK := 43,TARGET_SIGNAL_PRIO := 44, TARGET_SIGNAL_REALTIME_33 := 45,TARGET_SIGNAL_REALTIME_34 := 46, TARGET_SIGNAL_REALTIME_35 := 47,TARGET_SIGNAL_REALTIME_36 := 48, TARGET_SIGNAL_REALTIME_37 := 49,TARGET_SIGNAL_REALTIME_38 := 50, TARGET_SIGNAL_REALTIME_39 := 51,TARGET_SIGNAL_REALTIME_40 := 52, TARGET_SIGNAL_REALTIME_41 := 53,TARGET_SIGNAL_REALTIME_42 := 54, TARGET_SIGNAL_REALTIME_43 := 55,TARGET_SIGNAL_REALTIME_44 := 56, TARGET_SIGNAL_REALTIME_45 := 57,TARGET_SIGNAL_REALTIME_46 := 58, TARGET_SIGNAL_REALTIME_47 := 59,TARGET_SIGNAL_REALTIME_48 := 60, TARGET_SIGNAL_REALTIME_49 := 61,TARGET_SIGNAL_REALTIME_50 := 62, TARGET_SIGNAL_REALTIME_51 := 63,TARGET_SIGNAL_REALTIME_52 := 64, TARGET_SIGNAL_REALTIME_53 := 65,TARGET_SIGNAL_REALTIME_54 := 66, TARGET_SIGNAL_REALTIME_55 := 67,TARGET_SIGNAL_REALTIME_56 := 68, TARGET_SIGNAL_REALTIME_57 := 69,TARGET_SIGNAL_REALTIME_58 := 70, TARGET_SIGNAL_REALTIME_59 := 71,TARGET_SIGNAL_REALTIME_60 := 72, TARGET_SIGNAL_REALTIME_61 := 73,TARGET_SIGNAL_REALTIME_62 := 74, TARGET_SIGNAL_REALTIME_63 := 75,TARGET_SIGNAL_UNKNOWN, TARGET_SIGNAL_DEFAULT,TARGET_SIGNAL_LAST ); strata = (dummy_stratum,file_stratum,core_stratum,download_stratum,process_stratum); ptarget_ops = ^target_ops; target_ops = record to_shortname : pchar; to_longname : pchar; to_doc : pchar; to_open : procedure (_para1:pchar; _para2:longint); to_close : procedure (_para1:longint); to_attach : procedure (_para1:pchar; _para2:longint); to_detach : procedure (_para1:pchar; _para2:longint); to_resume : procedure (_para1:longint; _para2:longint; _para3:target_signal); to_wait : pointer; {function (_para1:longint; _para2:ptarget_waitstatus):longint;} to_fetch_registers : procedure (_para1:longint); to_store_registers : procedure (_para1:longint); to_prepare_to_store : procedure ; to_xfer_memory : function (memaddr:CORE_ADDR; myaddr:pchar; len:longint; write:longint; target:ptarget_ops):longint; to_files_info : procedure (_para1:ptarget_ops); to_insert_breakpoint : function (_para1:CORE_ADDR; _para2:pchar):longint; to_remove_breakpoint : function (_para1:CORE_ADDR; _para2:pchar):longint; to_terminal_init : procedure ; to_terminal_inferior : procedure ; to_terminal_ours_for_output : procedure ; to_terminal_ours : procedure ; to_terminal_info : procedure (_para1:pchar; _para2:longint); to_kill : procedure ; to_load : procedure (_para1:pchar; _para2:longint); to_lookup_symbol : function (_para1:pchar; _para2:pCORE_ADDR):longint; to_create_inferior : procedure (_para1:pchar; _para2:pchar; _para3:ppchar); to_mourn_inferior : procedure ; to_can_run : function :longint; to_notice_signals : procedure (pid:longint); to_thread_alive : function (pid:longint):longint; to_stop : procedure ; to_stratum : strata; DONT_USE : pointer; to_has_all_memory : longint; to_has_memory : longint; to_has_stack : longint; to_has_registers : longint; to_has_execution : longint; to_sections : pointer; {^section_table} to_sections_end : pointer; {^section_table} to_magic : longint; end; {$PACKRECORDS NORMAL} {***************************************************************************** Define external calls to libgdb.a *****************************************************************************} var { external variables } error_return : jmp_buf;cvar;public; quit_return : jmp_buf;cvar;public; {$ifdef GDB_HAS_DEPRECATED_CBPH} deprecated_create_breakpoint_hook : pointer;cvar;external; {$else} create_breakpoint_hook : pointer;cvar;external; {$endif} current_target : target_ops;cvar;external; stop_pc : CORE_ADDR;cvar;external; { Only used from GDB 5.01 but doesn't hurst otherwise } interpreter_p : pchar;cvar;public; { we need also to declare some vars } watchdog : longint;cvar;external; gdb_error : longint;cvar;public; display_time : longbool;cvar;public; display_space : longbool;cvar;public; { Whether this is the command line version or not } tui_version : longint;cvar;public; { Whether xdb commands will be handled } {$ifdef GDB_HAS_DB_COMMANDS} xdb_commands : longint;cvar;public; { Whether dbx commands will be handled } dbx_commands : longint;cvar;public; {$endif GDB_HAS_DB_COMMANDS} var gdb_stdout : pui_file;cvar;public; gdb_stderr : pui_file;cvar;public; gdb_stdlog : pui_file;cvar;public; gdb_stdtarg : pui_file;cvar;public; event_loop_p : longint;cvar;public; {$ifdef GDB_V6} (* target IO streams *) gdb_stdtargin : pui_file;cvar;public; gdb_stdtargerr : pui_file;cvar;public; {$endif} { used for gdb_stdout and gdb_stderr } function xmalloc(size : longint) : pointer;cdecl;external; function find_pc_line(i:CORE_ADDR;l:longint):symtab_and_line;cdecl;external; function find_pc_function(i:CORE_ADDR):psymbol;cdecl;external; function lookup_minimal_symbol_by_pc(i : CORE_ADDR):pminimal_symbol;cdecl;external; {$ifdef GDB_INIT_HAS_ARGV0} procedure gdb_init(argv0 : pchar);cdecl;external; {$else not GDB_INIT_HAS_ARGV0} procedure gdb_init;cdecl;external; {$endif not GDB_INIT_HAS_ARGV0} procedure execute_command(p:pchar;i:longint);cdecl;external; procedure target_kill;cdecl;external; procedure target_close(i:longint);cdecl;external; {***************************************************************************** Helpers *****************************************************************************} procedure Debug(const s:string); begin if use_gdb_file then Writeln(gdb_file,s) else Writeln(s); end; {***************************************************************************** TFrameEntry *****************************************************************************} constructor tframeentry.init; begin Reset; end; destructor tframeentry.done; begin Clear; end; procedure tframeentry.reset; begin file_name:=nil; function_name:=nil; args:=nil; line_number:=0; address:=0; end; procedure tframeentry.clear; begin if assigned(file_name) then strdispose(file_name); if assigned(function_name) then strdispose(function_name); if assigned(args) then strdispose(args); reset; end; {***************************************************************************** tgdbbuffer *****************************************************************************} const blocksize=2048; constructor tgdbbuffer.init; begin Buf:=nil; gdb_file:=nil; Size:=0; Resize(blocksize); Reset; end; destructor tgdbbuffer.done; begin if assigned(buf) then freemem(buf,size); end; procedure tgdbbuffer.reset; begin idx:=0; Buf[0]:=#0; end; procedure tgdbbuffer.append(p:pchar); var len : longint; begin if not assigned(p) then exit; len:=Strlen(p); if len+1+idx>size then Resize(len+1+idx); Move(p^,buf[idx],len); inc(idx,len); buf[idx]:=#0; end; procedure tgdbbuffer.lappend(p:pchar;len : longint); begin if not assigned(p) then exit; if len+idx+1>size then Resize(len+idx+1); Move(p^,buf[idx],len); inc(idx,len); buf[idx]:=#0; end; procedure tgdbbuffer.resize(nsize : longint); var np : pchar; begin nsize:=((nsize+blocksize-1) div blocksize)*blocksize; getmem(np,nsize); if assigned(buf) then begin move(buf^,np^,size); freemem(buf,size); end; buf:=np; size:=nsize; end; {***************************************************************************** Hook calls from libgdb.a *****************************************************************************} {$ifdef go32v2} procedure gdbpas_prev_exception_handler;cdecl;public; begin end; {$endif go32v2} procedure init_proc;cdecl;public; begin end; procedure annotate_signalled;cdecl;public; begin {$ifdef Verbose} Debug('|signalled|'); {$endif} end; procedure annotate_signal_name;cdecl;public; begin {$ifdef Verbose} Debug('|signal_name|'); {$endif} with curr_gdb^ do signal_name_start:=gdboutputbuf.idx; end; procedure annotate_signal_name_end;cdecl;public; begin {$ifdef Verbose} Debug('|signal_name_end|'); {$endif} with curr_gdb^ do signal_name_end:=gdboutputbuf.idx; end; procedure annotate_signal_string;cdecl;public; begin {$ifdef Verbose} Debug('|signal_string|'); {$endif} with curr_gdb^ do signal_start:=gdboutputbuf.idx; end; procedure annotate_signal_string_end;cdecl;public; var c : char; begin {$ifdef Verbose} Debug('|signal_string_end|'); {$endif} with curr_gdb^ do begin signal_end:=gdboutputbuf.idx; c:=gdboutputbuf.buf[signal_end]; gdboutputbuf.buf[signal_end]:=#0; if assigned(signal_string) then strdispose(signal_string); signal_string:=strnew(gdboutputbuf.buf+signal_start); gdboutputbuf.buf[signal_end]:=c; c:=gdboutputbuf.buf[signal_name_end]; gdboutputbuf.buf[signal_name_end]:=#0; if assigned(signal_name) then strdispose(signal_name); signal_name:=strnew(gdboutputbuf.buf+signal_name_start); gdboutputbuf.buf[signal_name_end]:=c; if (user_screen_shown) then begin DebuggerScreen; DoUserSignal; UserScreen; end else DoUserSignal; call_reset:=true; signaled:=false; end; end; procedure annotate_signal;cdecl;public; begin {$ifdef Verbose} Debug('|signal|'); {$endif} with curr_gdb^ do signaled:=true; end; procedure annotate_exited(exitstatus:longint);cdecl;public; begin {$ifdef Verbose} Debug('|exited|'); {$endif} {#ifdef __DJGPP__ /* this is very important. The exit code of a djgpp program disables interrupts and after this there is no other interrupt called, which enables interrupts with the iret. */ __dpmi_get_and_enable_virtual_interrupt_state(); #endif } {$ifdef go32v2} {$asmmode att} asm movw $0x901,%ax int $0x31 end; {$asmmode default} reload_fs; {$endif def go32v2} curr_gdb^.DebuggerScreen; { DeleteBreakPoints; } curr_gdb^.EndSession(exitstatus); end; procedure annotate_error;cdecl;public; begin {$ifdef Verbose} Debug('|error|'); {$endif} end; procedure annotate_error_begin;cdecl;public; begin {$ifdef Verbose} Debug('|error begin|'); {$endif} with curr_gdb^ do begin error_start:=gdboutputbuf.idx+strlen(gdboutputbuf.buf); got_error:=true; end; {$ifdef Verbose} Debug('|end of error begin|'); {$endif} end; procedure annotate_starting;cdecl;public; begin {$ifdef Verbose} Debug('|starting|'); {$endif} {$ifdef go32v2} reload_fs; {$endif go32v2} curr_gdb^.UserScreen; end; procedure annotate_stopped;cdecl;public; var sym : symtab_and_line; fname : pchar; begin {$ifdef Verbose} Debug('|stopped|'); {$endif} with curr_gdb^ do begin {$ifdef go32v2} reload_fs; {$endif go32v2} DebuggerScreen; current_pc:=stop_pc; Debuggee_started:=inferior_pid<>0; if not Debuggee_started then exit; if reset_command then exit; sym:=find_pc_line(stop_pc,0); if assigned(sym.symtab) then fname:=sym.symtab^.filename else fname:=nil; SelectSourceLine(fname,sym.line); end; end; function inferior_pid : longint; begin inferior_pid:=inferior_ptid.pid; end; procedure proc_remove_foreign(pid:longint);cdecl;public; begin end; procedure breakpoints_changed;cdecl;public; begin {$ifdef Verbose} Debug('|breakpoints_changed|'); {$endif} end; procedure annotate_ignore_count_change;cdecl;public; begin {$ifdef Verbose} Debug('|annotate_ignore_count_change()|'); {$endif} end; procedure annotate_breakpoint(num:longint);cdecl;public; begin {$ifdef Verbose} Debug('|breakpoint(%d)|'); {$endif} With Curr_gdb^ do stop_breakpoint_number:=num; end; procedure annotate_watchpoint(num:longint);cdecl;public; begin {$ifdef Verbose} Debug('|watchpoint(%d)|'); {$endif} With Curr_gdb^ do stop_breakpoint_number:=num; end; procedure annotate_catchpoint(num:longint);cdecl;public; begin {$ifdef Verbose} Debug('|catchpoint(%d)|'); {$endif} With Curr_gdb^ do stop_breakpoint_number:=num; end; procedure annotate_breakpoints_headers;cdecl;public; begin {$ifdef Verbose} Debug('|breakpoints_headers|'); {$endif} end; procedure annotate_breakpoints_table;cdecl;public; begin {$ifdef Verbose} Debug('|breakpoints_table|'); {$endif} end; procedure annotate_record;cdecl;public; begin {$ifdef Verbose} Debug('|record|'); {$endif} end; procedure annotate_breakpoints_table_end;cdecl;public; begin {$ifdef Verbose} Debug('|breakpoints_table_end|'); {$endif} end; procedure annotate_frames_invalid;cdecl;public; begin {$ifdef Verbose} Debug('|frames_invalid|'); {$endif} end; procedure annotate_frame_begin(level:longint;pc:CORE_ADDR);cdecl;public; begin {$ifdef Verbose} Debug('|frame_begin(%d,%ld)|'); {$endif} with curr_gdb^ do begin frame_begin_seen:=true; frame_level:=level; current_address:=pc; current_line_number:=-1; function_start:=-1; function_end:=-1; args_start:=-1; args_end:=-1; file_start:=-1; file_end:=-1; line_start:=-1; line_end:=-1; end; end; procedure annotate_frame_address;cdecl;public; begin {$ifdef Verbose} Debug('|frame_address|'); {$endif} end; procedure annotate_frame_address_end;cdecl;public; begin {$ifdef Verbose} Debug('|frame_address_end|'); {$endif} end; procedure annotate_frame_function_name;cdecl;public; begin {$ifdef Verbose} Debug('|frame_function_name|'); {$endif} with curr_gdb^ do function_start:=gdboutputbuf.idx; end; procedure annotate_frame_args;cdecl;public; begin {$ifdef Verbose} Debug('|frame_args|'); {$endif} with curr_gdb^ do begin function_end:=gdboutputbuf.idx; args_start:=gdboutputbuf.idx; end; end; procedure annotate_frame_source_begin;cdecl;public; begin {$ifdef Verbose} Debug('|frame_source_begin|'); {$endif} with curr_gdb^ do args_end:=gdboutputbuf.idx; end; procedure annotate_frame_source_file;cdecl;public; begin {$ifdef Verbose} Debug('|frame_source_file|'); {$endif} with curr_gdb^ do file_start:=gdboutputbuf.idx; end; procedure annotate_frame_source_file_end;cdecl;public; begin {$ifdef Verbose} Debug('|frame_source_file_end|'); {$endif} with curr_gdb^ do file_end:=gdboutputbuf.idx; end; procedure annotate_frame_source_line;cdecl;public; begin {$ifdef Verbose} Debug('|frame_source_line|'); {$endif} with curr_gdb^ do line_start:=gdboutputbuf.idx; end; procedure annotate_frame_source_end;cdecl;public; begin {$ifdef Verbose} Debug('|frame_source_end|'); {$endif} with curr_gdb^ do line_end:=gdboutputbuf.idx; end; procedure annotate_frame_where;cdecl;public; begin {$ifdef Verbose} Debug('|frame_where|'); {$endif} end; procedure annotate_frame_end;cdecl;public; var fe : pframeentry; c : char; err : integer; begin {$ifdef Verbose} Debug('|frame_end|'); {$endif} with curr_gdb^ do begin if (not record_frames) or (not frame_begin_seen) then exit; { This can happen, when the function has no Debugging information } if (args_start >= 0) and (args_end < 0) then args_end:=gdboutputbuf.idx; frame_begin_seen:=false; fe:=get_frameentry(frame_level); fe^.address:=current_address; fe^.level:=frame_level; if (function_start>=0) then begin c:=gdboutputbuf.buf[function_end]; gdboutputbuf.buf[function_end]:=#0; fe^.function_name:=strnew(gdboutputbuf.buf+function_start); gdboutputbuf.buf[function_end]:=c; end; if (file_start>=0) then begin c:=gdboutputbuf.buf[file_end]; gdboutputbuf.buf[file_end]:=#0; fe^.file_name:=strnew(gdboutputbuf.buf+file_start); gdboutputbuf.buf[file_end]:=c; end; if (args_start>=0) then begin {$warning FIXME} {sometimes the ide crashes here because ars_end is 0, AD} if args_end > 0 then begin if (gdboutputbuf.buf[args_end-1]=#10) then dec(args_end); c:=gdboutputbuf.buf[args_end]; gdboutputbuf.buf[args_end]:=#0; fe^.args:=strnew(gdboutputbuf.buf+args_start); gdboutputbuf.buf[args_end]:=c; end; end; if (line_start>=0) then begin c:=gdboutputbuf.buf[line_end]; gdboutputbuf.buf[line_end]:=#0; { sscanf(gdb_output_buffer+line_start,'%d',&fe^.line_number); } val(strpas(pchar(@gdboutputbuf.buf[line_start])),fe^.line_number,err); gdboutputbuf.buf[line_end]:=c; end; end; end; procedure annotate_quit;cdecl;public; begin {$ifdef Verbose} Debug('|quit|'); {$endif} end; procedure annotate_arg_begin;cdecl;public; begin {$ifdef Verbose} Debug('|arg_begin|'); {$endif} end; procedure annotate_arg_name_end;cdecl;public; begin {$ifdef Verbose} Debug('|arg_name_end|'); {$endif} end; procedure annotate_arg_value(typ:pointer);cdecl;public; begin {$ifdef Verbose} Debug('|arg_value|'); {$endif} end; procedure annotate_arg_end;cdecl;public; begin {$ifdef Verbose} Debug('|arg_end|'); {$endif} end; procedure annotate_source(filename:pchar;line,character,mid:longint;pc:CORE_ADDR);cdecl;public; begin {$ifdef Verbose} Debug('|source|'); {$endif} end; procedure annotate_function_call;cdecl;public; begin {$ifdef Verbose} Debug('|function_call|'); {$endif} end; procedure annotate_signal_handler_caller;cdecl;public; begin {$ifdef Verbose} Debug('|signal_handler_caller|'); {$endif} end; procedure annotate_array_section_begin(index:longint;elttype:pointer);cdecl;public; begin {$ifdef Verbose} Debug('|array_section_begin()|'); {$endif} end; procedure annotate_elt_rep(repcount:longint);cdecl;public; begin {$ifdef Verbose} Debug('|elt_rep()|'); {$endif} end; procedure annotate_elt_rep_end;cdecl;public; begin {$ifdef Verbose} Debug('|elt_rep_end|'); {$endif} end; procedure annotate_elt;cdecl;public; begin {$ifdef Verbose} Debug('|elt|'); {$endif} end; procedure annotate_array_section_end;cdecl;public; begin {$ifdef Verbose} Debug('|array_section_end|'); {$endif} end; procedure annotate_display_begin;cdecl;public; begin {$ifdef Verbose} Debug('|display_begin|'); {$endif} end; procedure annotate_display_number_end;cdecl;public; begin {$ifdef Verbose} Debug('|display_number_end|'); {$endif} end; procedure annotate_display_format;cdecl;public; begin {$ifdef Verbose} Debug('|display_format|'); {$endif} end; procedure annotate_display_expression;cdecl;public; begin {$ifdef Verbose} Debug('|display_expression|'); {$endif} end; procedure annotate_display_expression_end;cdecl;public; begin {$ifdef Verbose} Debug('|display_expression_end|'); {$endif} end; procedure annotate_display_value;cdecl;public; begin {$ifdef Verbose} Debug('|display_value|'); {$endif} end; procedure annotate_display_end;cdecl;public; begin {$ifdef Verbose} Debug('|display_end|'); {$endif} end; procedure annotate_field (num:longint);cdecl;public; begin {$ifdef Verbose} Debug('a_field(%d)'); {$endif} end; procedure annotate_field_begin(typ:pointer);cdecl;public; begin {$ifdef Verbose} Debug('a_field_begin\n'); {$endif} end; procedure annotate_field_name_end;cdecl;public; begin {$ifdef Verbose} Debug('a_field_name_end\n'); {$endif} end; procedure annotate_field_value;cdecl;public; begin {$ifdef Verbose} Debug('a_field_value\n'); {$endif} end; procedure annotate_field_end;cdecl;public; begin {$ifdef Verbose} Debug('a_field_end\n'); {$endif} end; procedure annotate_value_history_begin (histindex:longint;typ:pointer);cdecl;public; begin {$ifdef Verbose} Debug('a_value_history_begin(%d)\n'); {$endif} end; procedure annotate_value_begin (typ:pointer);cdecl;public; begin {$ifdef Verbose} Debug('a_value_begin\n'); {$endif} end; procedure annotate_value_history_value;cdecl;public; begin {$ifdef Verbose} Debug('a_value_history_value\n'); {$endif} end; procedure annotate_value_history_end;cdecl;public; begin {$ifdef Verbose} Debug('a_value_history_end\n'); {$endif} end; procedure annotate_value_end;cdecl;public; begin {$ifdef Verbose} Debug('a_value_end\n'); {$endif} end; procedure _initialize_annotate;cdecl;public; begin end; procedure gdbint_ui_file_write(stream : pui_file; p : pchar; len : longint);cdecl; begin if assigned(curr_gdb) then with curr_gdb^ do if stream = gdb_stderr then gdberrorbuf.lappend(p,len) else if stream = gdb_stdout then gdboutputbuf.lappend(p,len) else begin gdberrorbuf.append('Unknown gdb ui_file'); gdberrorbuf.lappend(p,len); end; end; procedure CreateBreakPointHook(var b:breakpoint);cdecl; var sym : symtab_and_line; { this procedure is only here to avoid the problems with different version of gcc having different stack handling: on older versions find_pc_line uses just "ret" while on newer gcc version "ret $4" is used if this call is within the CreateBreakPointHook function it changes %esp and thus the registers are not restored correctly PM } procedure get_pc_line; begin sym:=find_pc_line(b.address,0); end; begin get_pc_line; with curr_gdb^ do begin last_breakpoint_number:=b.number; { function breakpoints have zero as file and as line !! but they are valid !! } invalid_breakpoint_line:=(b.line_number<>sym.line) and (b.line_number<>0); last_breakpoint_address:=b.address; last_breakpoint_line:=sym.line; if assigned(sym.symtab) then last_breakpoint_file:=sym.symtab^.filename else last_breakpoint_file:=nil; end; end; {***************************************************************************** tgdbinterface *****************************************************************************} constructor tgdbinterface.init; begin gdboutputbuf.init; gdberrorbuf.init; record_frames:=true; { This must be placed before gdb__init is called as gdb_init might issue output PM } curr_gdb:=@self; gdb__init; command_level:=0; { set output mode for GDB } { only these values disable filtering DONT CHANGE THEM !!! PM } gdb_command('set width 0xffffffff'); gdb_command('set height 0xffffffff'); { other standard commands used for fpc debugging } gdb_command('set print demangle off'); gdb_command('set gnutarget auto'); gdb_command('set language auto'); gdb_command('set print vtbl on'); gdb_command('set print object on'); gdb_command('set print null-stop'); end; destructor tgdbinterface.done; begin clear_frames; gdb_done; gdboutputbuf.done; gdberrorbuf.done; end; procedure tgdbinterface.gdb__init; begin gdboutputbuf.reset; gdberrorbuf.reset; {$ifdef GDB_HAS_DEPRECATED_CBPH} deprecated_create_breakpoint_hook:=@CreateBreakPointHook; {$else} create_breakpoint_hook:=@CreateBreakPointHook; {$endif} signal_string:=nil; signal_name:=nil; end; procedure tgdbinterface.gdb_done; begin if debuggee_started then begin current_target.to_kill; current_target.to_close(1); end; {$ifdef GDB_HAS_DEPRECATED_CBPH} deprecated_create_breakpoint_hook:=nil; {$else} create_breakpoint_hook:=nil; {$endif} end; function tgdbinterface.error:boolean; begin error:=got_error; end; function tgdbinterface.error_num:longint; begin error_num:=gdb_error; end; var top_level_val : longint; function catch_errors(func : pointer; command : pchar; from_tty,mask : longint) : longint;cdecl;external; function gdbint_execute_command(command : pchar; from_tty,mask : longint) : longint;cdecl; begin gdbint_execute_command:=1; execute_command(command,from_tty); gdbint_execute_command:=0; end; {$ifdef cpui386} type tfpustate = word; const MaskAllExceptions = $ff; {$else} type tfpustate = longint; const MaskAllExceptions = 0; {$endif} procedure SaveFPUState(var control :TFPUState); begin {$ifdef cpui386} asm movl control, %edi fstcw (%edi) end; {$else} control:=0; {$endif} end; procedure SetFPUState(control : TFPUState); begin {$ifdef cpui386} asm fnclex fldcw control end; {$else} {$endif} end; function MaskAllFPUExceptions(control : TFPUState) : TFPUState; begin {$ifdef cpui386} MaskAllFPUExceptions := control or MaskAllExceptions; {$endif} end; procedure tgdbinterface.gdb_command(const s:string); var command : array[0..256] of char; mask : longint; s2 : string; old_quit_return, old_error_return : jmp_buf; control : TFPUState; begin inc(command_level); SaveFPUState(control); SetFPUState(MaskAllFPUExceptions(control)); move(s[1],command,length(s)); command[length(s)]:=#0; old_quit_return:=quit_return; old_error_return:=error_return; gdb_error:=0; got_error:=false; stop_breakpoint_number:=0; { Trap quit commands } s2:=s; while (length(s2)>0) and ((s2[1]=' ') or (s2[1]=#9)) do s2:=copy(s2,2,255); if (length(s2)>0) and (UpCase(s2[1])='Q') and ((length(s2)=1) or (s2[2]=' ') or ((UpCase(s2[2])='U') and ((length(s2)=2) or (s2[3]=' ') or ((UpCase(s2[3])='I') and ((length(s2)=3) or (s2[4]=' ') or ((UpCase(s2[4])='T') and ((length(s2)=4) or (s2[5]=' ') ))))))) then begin if not AllowQuit then exit; end; {$ifdef DebugCommand} Debug('start of handle_gdb_command ('+s+')'); {$endif} top_level_val:=setjmp(error_return); if top_level_val=0 then begin quit_return:=error_return; mask:=longint($ffffffff); catch_errors(@gdbint_execute_command,@command,0,mask); {$ifdef go32v2} reload_fs; {$endif go32v2} end else {$ifdef Verbose} Debug('error longjmp in handle_gdb_command ('+s+')'); {$endif} ; {$ifdef DebugCommand} Debug('end of handle_gdb_command ('+s+')'); {$endif} quit_return:=old_quit_return; error_return:=old_error_return; dec(command_level); SetFPUState(control); end; procedure tgdbinterface.resize_frames; var i : longint; new_frames : ppframeentry; begin if (frame_count>=frame_size) then begin getmem(new_frames,sizeof(pointer)*(frame_count+1)); for i:=0 to frame_size-1 do new_frames[i]:=frames[i]; if assigned(frames) then freemem(frames,sizeof(pointer)*frame_size); frames:=new_frames; frame_size:=frame_count+1; for i:=frame_count to frame_size-1 do frames[i]:=new(pframeentry,init); end; end; function tgdbinterface.add_frameentry:pframeentry; begin resize_frames; add_frameentry:=frames[frame_count]; inc(frame_count); end; function tgdbinterface.get_frameentry(level : longint) : pframeentry; begin { only climb values one by one PM } if level>=frame_count then resize_frames; get_frameentry:=frames[level]; frames[level]^.clear; if level>=frame_count then inc(frame_count); end; procedure tgdbinterface.clear_frames; var i : longint; begin for i:=0 to frame_size-1 do dispose(frames[i],done); freemem(frames,sizeof(pointer)*Frame_size); frame_count:=0; frame_size:=0; end; function tgdbinterface.get_current_frame : ptrint; begin record_frames:=false; gdb_command('f'); get_current_frame:=frame_level; record_frames:=true; end; function tgdbinterface.set_current_frame(level : longint) : boolean; var s : string; begin record_frames:=false; str(level,s); gdb_command('f '+s); if level=frame_level then set_current_frame:=true else set_current_frame:=false; record_frames:=true; end; {***************************************************************************** Highlevel tgdbinterface *****************************************************************************} procedure tgdbinterface.GetAddrSyminfo(addr:ptrint;var si:tsyminfo); var sym : symtab_and_line; symbol : psymbol; begin sym:=find_pc_line(addr,1); fillchar(si,sizeof(tsyminfo),0); si.address:=addr; si.offset:=addr-sym.pc; if assigned(sym.symtab) then si.fname:=sym.symtab^.filename else si.fname:=nil; si.line:=sym.line; symbol:=find_pc_function(addr); if assigned(symbol) then si.funcname:=symbol^.ginfo._name else si.funcname:=nil; end; procedure tgdbinterface.SelectSourceLine(fn:pchar;line:longint); begin if assigned(fn) then DoSelectSourceLine(StrPas(fn),line) else DoSelectSourceLine('',line); end; procedure tgdbinterface.StartSession; begin DoStartSession; end; procedure tgdbinterface.BreakSession; begin DoBreakSession; end; procedure tgdbinterface.EndSession(code:longint); begin Debuggee_started:=false; inferior_ptid.pid:=0; DoEndSession(code); if assigned(signal_name) then strdispose(signal_name); signal_name:=nil; if assigned(signal_string) then strdispose(signal_string); signal_string:=nil; end; procedure tgdbinterface.DebuggerScreen; begin {$ifdef Verbose} Debug('|DebuggerScreen|'); {$endif} if user_screen_shown then DoDebuggerScreen; user_screen_shown:=false; end; procedure tgdbinterface.UserScreen; begin {$ifdef Verbose} Debug('|UserScreen|'); {$endif} if switch_to_user then begin if (not user_screen_shown) then DoUserScreen; user_screen_shown:=true; end; end; {--------------------------------------- Default Hooks ---------------------------------------} procedure tgdbinterface.DoSelectSourceLine(const fn:string;line:longint); {$ifdef Verbose} var s : string; {$endif} begin {$ifdef Verbose} Str(line,S); Debug('|SelectSource '+fn+':'+s+'|'); {$endif} end; procedure tgdbinterface.DoStartSession; begin end; procedure tgdbinterface.DoBreakSession; begin end; procedure tgdbinterface.DoEndSession(code:longint); begin end; procedure tgdbinterface.DoUserSignal; begin end; procedure tgdbinterface.DoDebuggerScreen; begin end; procedure tgdbinterface.DoUserScreen; begin end; function tgdbinterface.AllowQuit : boolean; begin AllowQuit:=true; end; var version : array[0..0] of char;cvar;external; {$ifndef GDB_NEEDS_NO_ERROR_INIT} { doesn't seem to exist anymore. Seems to work fine without } procedure error_init;cdecl;external; {$endif GDB_NEEDS_NO_ERROR_INIT} function GDBVersion : string; begin GDBVersion:='GDB '+StrPas(version); end; const next_exit : pointer = nil; procedure DoneLibGDB; begin exitproc:=next_exit; end; {$ifdef go32v2} var c_environ : ppchar;external name '_environ'; c_argc : longint;external name '___crt0_argc'; c_argv : ppchar;external name '___crt0_argv'; {$endif def go32v2} procedure InitLibGDB; {$ifdef supportexceptions} var OldSigInt : SignalHandler; {$endif supportexceptions} {$ifdef GDB_INIT_HAS_ARGV0} var argv0 : pchar; {$endif not GDB_INIT_HAS_ARGV0} begin {$ifdef go32v2} c_environ:=system.envp; c_argc:=system.argc; c_argv:=system.argv; {$endif def go32v2} {$ifdef supportexceptions} {$ifdef go32v2} OldSigInt:=Signal(SIGINT,SignalHandler(@SIG_DFL)); {$else} {$ifdef Unix} OldSigInt:=fpSignal(SIGINT,SignalHandler(SIG_DFL)); {$else} OldSigInt:=Signal(SIGINT,SignalHandler(SIG_DFL)); {$endif} {$endif} {$endif supportexceptions} if assigned(gdb_stderr) then ui_file_delete(gdb_stderr); if assigned(gdb_stdout) then ui_file_delete(gdb_stdout); gdb_stderr:=mem_fileopen; gdb_stdout:=mem_fileopen; gdb_stdlog:=gdb_stderr; gdb_stdtarg:=gdb_stderr; set_ui_file_write(gdb_stdout,@gdbint_ui_file_write); set_ui_file_write(gdb_stderr,@gdbint_ui_file_write); {$ifndef GDB_NEEDS_NO_ERROR_INIT} error_init; {$endif GDB_NEEDS_NO_ERROR_INIT} {$ifdef GDB_V6} // gdb_stdtargin := gdb_stdin; gdb_stdtargerr := gdb_stderr; {$endif} next_exit:=exitproc; exitproc:=@DoneLibGDB; {$ifdef GDB_V6} uiout := cli_out_new (gdb_stdout); {$endif} {$ifdef GDB_INIT_HAS_ARGV0} getmem(argv0,length(paramstr(0))+1); strpcopy(argv0,paramstr(0)); gdb_init(argv0); freemem(argv0,length(paramstr(0))+1); {$else not GDB_INIT_HAS_ARGV0} gdb_init; {$endif not GDB_INIT_HAS_ARGV0} {$ifdef supportexceptions} {$ifdef unix} fpsignal(SIGINT,OldSigInt); {$else} Signal(SIGINT,OldSigInt); {$endif} {$endif supportexceptions} if setjmp(error_return)=0 then begin quit_return:=error_return; exit; end else begin {$ifdef Verbose} Debug('|LongJump to Init|'); {$endif} {$ifdef go32v2} RunError(99); {$endif def go32v2} end; WatchDog:=0; end; {$ifdef GDB_HAS_SYSROOT} var gdb_sysroot : pchar; cvar;public; gdb_sysrootc : char; return_child_result : longbool;cvar;public; return_child_result_value : longint;cvar;public; batch_silent : longbool;cvar;public; {$endif} begin {$ifdef GDB_HAS_SYSROOT} gdb_sysrootc := #0; gdb_sysroot := @gdb_sysrootc; {$endif} gdb_stderr:=nil; gdb_stdout:=nil; InitLibGDB; end.