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fpc/packages/gdbint/gdbint.pp

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{
$Id$
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;
interface
{ this is not needed (PM) $output_format as}
{.$define Debug}
{.$define DebugCommand}
{$define NotImplemented}
{$ifdef go32v2}
{$undef NotImplemented}
{ ifdef GDB_V418 changed to ifndef GDB_V416}
{$ifdef USE_GDB_OBJS}
{$include gdbobjs.inc}
{$else USE_GDB_OBJS}
{$LINKLIB gdb}
{$endif ndef USE_GDB_OBJS}
{$LINKLIB dbg}
{$LINKLIB c}
{$endif go32v2}
{$ifdef linux}
{$undef NotImplemented}
{$LINKLIB ncurses}
{$LINKLIB gdb}
{$LINKLIB c}
{$LINKLIB gcc}
{$endif linux}
{$ifdef win32}
{$undef NotImplemented}
{$LINKLIB cygwin}
{$LINKLIB gdb}
{$ifdef USE_TERMCAP}
{$LINKLIB termcap}
{$else not USE_TERMCAP}
{$LINKLIB ncurses}
{$endif not USE_TERMCAP}
{$LINKLIB gcc}
{$LINKLIB c}
{$LINKLIB cygwin}
{ all those are maybe not necessary
but at least user32 is required
because of clipboard handling PM }
{$LINKLIB kernel32}
{$LINKLIB user32}
{$endif win32}
{$ifdef go32v2}
{$define supportexceptions}
{$endif go32v2}
{$ifdef linux}
{$define supportexceptions}
{$endif linux}
{$ifdef NotImplemented}
{$fatal This OS is not yet supported !!!}
{$endif NotImplemented}
type
psyminfo=^tsyminfo;
tsyminfo=record
address : longint;
fname : pchar;
line : longint;
funcname : pchar;
offset : longint;
end;
tframeentry = object
file_name : pchar;
function_name : pchar;
args : pchar;
line_number : longint;
address : longint;
level : longint;
constructor init;
destructor done;
procedure reset;
procedure clear;
end;
pframeentry=^tframeentry;
ppframeentry=^pframeentry;
{$ifndef GDB_V416}
{ needed for handles }
{not anymore I textrec.inc}
{ GDB_FILE type }
type
streamtype = (afile,astring);
C_FILE = longint; { at least under DJGPP }
P_C_FILE = ^C_FILE;
PGDB_FILE = ^TGDB_FILE;
TGDB_FILE = record
ts_streamtype : streamtype;
ts_filestream : P_C_FILE;
ts_strbuf : pchar;
ts_buflen : longint;
end;
{$ifdef win32}
{ from sys/reent.h
real structure is bigger but only std.. are wanted here PM }
REENT = record
err : longint;
stdin,stdout,stderr : P_C_FILE;
end;
PREENT = ^REENT;
var _impure_ptr : PREENT;cvar;external;
{$endif win32}
{$endif not GDB_V416}
type
tgdbbuffer=object
buf : pchar;
size,
idx : longint;
{$ifndef GDB_V416}
link : pgdb_file;
{$endif not GDB_V416}
constructor Init;
destructor Done;
procedure Reset;
procedure Resize(nsize : longint);
procedure Append(p:pchar);
end;
pgdbinterface=^tgdbinterface;
tgdbinterface=object
gdberrorbuf,
gdboutputbuf : tgdbbuffer;
got_error,
reset_command,
call_reset,
Debuggee_started : boolean;
{ frames and frame info while recording a frame }
frames : ppframeentry;
frame_size,
frame_count : longint;
record_frames,
frame_begin_seen : boolean;
frame_level,
command_level,
stop_breakpoint_number,
current_address,
current_line_number,
signal_start,
signal_end,
error_start,
error_end,
function_start,
function_end,
args_start,
args_end,
file_start,
file_end,
line_start,
line_end : longint;
{ breakpoint }
last_breakpoint_number,
last_breakpoint_address,
last_breakpoint_line : longint;
last_breakpoint_file : pchar;
invalid_breakpoint_line : boolean;
{ init }
constructor init;
destructor done;
{ Lowlevel }
function error:boolean;
function error_num:longint;
procedure gdb_command(const s:string);
procedure gdb__init;
procedure gdb_done;
procedure resize_frames;
function add_frameentry:pframeentry;
function get_frameentry(level : longint):pframeentry;
function get_current_frame : longint;
function set_current_frame(level : longint) : boolean;
procedure clear_frames;
{ Highlevel }
user_screen_shown,
switch_to_user : boolean;
procedure GetAddrSyminfo(addr:longint;var si:tsyminfo);
procedure SelectSourceline(fn:pchar;line:longint);
procedure StartSession;
procedure BreakSession;
procedure EndSession(code:longint);
procedure DebuggerScreen;
procedure UserScreen;
{ Hooks }
procedure DoSelectSourceline(const fn:string;line:longint);virtual;
procedure DoStartSession;virtual;
procedure DoBreakSession;virtual;
procedure DoEndSession(code:longint);virtual;
procedure DoDebuggerScreen;virtual;
procedure DoUserScreen;virtual;
function AllowQuit : boolean;virtual;
end;
function GDBVersion : string;
var
curr_gdb : pgdbinterface;
const
use_gdb_file : boolean = false;
var
gdb_file : text;
{$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 linux}
linux,
{$endif}
{$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}
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}
{$endif win32}
type
CORE_ADDR = longint;
pCORE_ADDR = ^CORE_ADDR;
pblock = ^block;
tlanguage = (language_unknown,language_auto,language_c,
language_cplus,language_java,language_chill,
language_fortran,language_m2,language_asm,
language_scm,language_pascal,language_objc);
bptype = (bp_breakpoint,bp_hardware_breakpoint,
bp_until,bp_finish,bp_watchpoint,bp_hardware_watchpoint,
bp_read_watchpoint,bp_access_watchpoint,
bp_longjmp,bp_longjmp_resume,bp_step_resume,
bp_through_sigtramp,bp_watchpoint_scope,
bp_call_dummy,bp_shlib_event);
tenable = (disabled,enabled,shlib_disabled);
bpdisp = (del,del_at_next_stop,disable,donttouch);
{$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;
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;
{$ifndef GDB_V416}
{ v4.16 does not have the section field !! }
section : pointer; {^asection;}
{$endif GDB_V416}
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;
{$PACKRECORDS NORMAL}
{*****************************************************************************
Define external calls to libgdb.a
*****************************************************************************}
var
{ external variables }
error_return : jmp_buf;cvar;external;
quit_return : jmp_buf;cvar;external;
inferior_pid : longint;cvar;external;
create_breakpoint_hook : pointer;cvar;external;
current_target : target_ops;cvar;external;
stop_pc : CORE_ADDR;cvar;external;
{ we need also to declare some vars }
watchdog : longint;cvar;public;
gdb_error : longint;cvar;public;
display_time : longbool;cvar;public;
display_space : longbool;cvar;public;
{$ifndef GDB_V416}
{ the following are also needed from version 4.18 }
{ Whether this is the command line version or not }
tui_version : longint;cvar;public;
{ Whether xdb commands will be handled }
xdb_commands : longint;cvar;public;
{ Whether dbx commands will be handled }
dbx_commands : longint;cvar;public;
var
gdb_stdout : PGDB_FILE;cvar;public;
gdb_stderr : PGDB_FILE;cvar;public;
{ used for gdb_stdout and gdb_stderr }
function xmalloc(size : longint) : pointer;cdecl;external;
{$endif not GDB_V416}
function find_pc_line(i:CORE_ADDR;l:longint):symtab_and_line;cdecl;external;
function find_pc_function(i:CORE_ADDR):psymbol;cdecl;external;
function lookup_minimal_symbol_by_pc(i : CORE_ADDR):pminimal_symbol;cdecl;external;
procedure gdb_init;cdecl;external;
procedure execute_command(p:pchar;i:longint);cdecl;external;
procedure target_kill;cdecl;external;
procedure target_close(i:longint);cdecl;external;
{*****************************************************************************
Helpers
*****************************************************************************}
procedure Debug(const s:string);
begin
if use_gdb_file then
Writeln(gdb_file,s)
else
Writeln(s);
end;
{*****************************************************************************
TFrameEntry
*****************************************************************************}
constructor tframeentry.init;
begin
Reset;
end;
destructor tframeentry.done;
begin
Clear;
end;
procedure tframeentry.reset;
begin
file_name:=nil;
function_name:=nil;
args:=nil;
line_number:=0;
address:=0;
end;
procedure tframeentry.clear;
begin
if assigned(file_name) then
strdispose(file_name);
if assigned(function_name) then
strdispose(function_name);
if assigned(args) then
strdispose(args);
reset;
end;
{*****************************************************************************
tgdbbuffer
*****************************************************************************}
const
blocksize=2048;
constructor tgdbbuffer.init;
begin
Buf:=nil;
{$ifndef GDB_V416}
link:=nil;
{$endif not GDB_V416}
Size:=0;
Resize(blocksize);
Reset;
end;
destructor tgdbbuffer.done;
begin
if assigned(buf) then
freemem(buf,size);
{$ifndef GDB_V416}
if assigned(link) then
begin
link^.ts_streamtype:=afile;
link^.ts_strbuf:=nil;
link^.ts_buflen:=0;
end;
{$endif not GDB_V416}
end;
procedure tgdbbuffer.reset;
begin
idx:=0;
Buf[0]:=#0;
end;
procedure tgdbbuffer.append(p:pchar);
var
len : longint;
begin
if not assigned(p) then
exit;
len:=Strlen(p);
if len+idx>size then
Resize(len+idx);
Move(p^,buf[idx],len);
inc(idx,len);
buf[idx]:=#0;
end;
procedure tgdbbuffer.resize(nsize : longint);
var
np : pchar;
begin
nsize:=((nsize+blocksize-1) div blocksize)*blocksize;
getmem(np,nsize);
if assigned(buf) then
begin
move(buf^,np^,size);
freemem(buf,size);
end;
buf:=np;
size:=nsize;
{$ifndef GDB_V416}
if assigned(link) then
begin
link^.ts_strbuf:=buf;
link^.ts_buflen:=size;
end;
{$endif not GDB_V416}
end;
{*****************************************************************************
Hook calls from libgdb.a
*****************************************************************************}
{$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 Debug}
Debug('|signalled|');
{$endif}
end;
procedure annotate_signal_name;cdecl;public;
begin
{$ifdef Debug}
Debug('|signal_name|');
with curr_gdb^ do
signal_start:=gdboutputbuf.idx;
{$endif}
end;
procedure annotate_signal_name_end;cdecl;public;
begin
{$ifdef Debug}
Debug('|signal_name_end|');
{$endif}
end;
procedure annotate_signal_string;cdecl;public;
begin
{$ifdef Debug}
Debug('|signal_string|');
{$endif}
end;
procedure annotate_signal_string_end;cdecl;public;
begin
{$ifdef Debug}
Debug('|signal_string_end|');
{$endif}
with curr_gdb^ do
begin
signal_end:=gdboutputbuf.idx;
{
signal = (char *)alloca(signal_end-signal_start+1);
strncpy(signal,gdb_output_buffer+signal_start,signal_end-signal_start);
signal[signal_end-signal_start] = 0;
if (user_screen_shown)
__DebuggerScreen();
_UserWarning(WARN_SIGNALED,signal);
__UserScreen();
else
_UserWarning(WARN_SIGNALED,signal); }
call_reset:=true;
end;
end;
procedure annotate_signal;cdecl;public;
begin
{$ifdef Debug}
Debug('|signal|');
{$endif}
end;
procedure annotate_exited(exitstatus:longint);cdecl;public;
begin
{$ifdef Debug}
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 Debug}
Debug('|error|');
{$endif}
end;
procedure annotate_error_begin;cdecl;public;
begin
{$ifdef Debug}
Debug('|error begin|');
{$endif}
with curr_gdb^ do
begin
error_start:=gdboutputbuf.idx+strlen(gdboutputbuf.buf);
got_error:=true;
end;
{$ifdef Debug}
Debug('|end of error begin|');
{$endif}
end;
procedure annotate_starting;cdecl;public;
begin
{$ifdef Debug}
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 Debug}
Debug('|stopped|');
{$endif}
with curr_gdb^ do
begin
{$ifdef go32v2}
reload_fs;
{$endif go32v2}
DebuggerScreen;
Debuggee_started:=inferior_pid<>0;
if not Debuggee_started then exit;
if reset_command then exit;
sym:=find_pc_line(stop_pc,0);
if assigned(sym.symtab) then
fname:=sym.symtab^.filename
else
fname:=nil;
SelectSourceLine(fname,sym.line);
end;
end;
procedure proc_remove_foreign(pid:longint);cdecl;public;
begin
end;
procedure breakpoints_changed;cdecl;public;
begin
{$ifdef Debug}
Debug('|breakpoints_changed|');
{$endif}
end;
procedure annotate_breakpoint(num:longint);cdecl;public;
begin
{$ifdef Debug}
Debug('|breakpoint(%d)|');
{$endif}
With Curr_gdb^ do
stop_breakpoint_number:=num;
end;
procedure annotate_watchpoint(num:longint);cdecl;public;
begin
{$ifdef Debug}
Debug('|watchpoint(%d)|');
{$endif}
With Curr_gdb^ do
stop_breakpoint_number:=num;
end;
procedure annotate_catchpoint(num:longint);cdecl;public;
begin
{$ifdef Debug}
Debug('|catchpoint(%d)|');
{$endif}
With Curr_gdb^ do
stop_breakpoint_number:=num;
end;
procedure annotate_breakpoints_headers;cdecl;public;
begin
{$ifdef Debug}
Debug('|breakpoints_headers|');
{$endif}
end;
procedure annotate_breakpoints_table;cdecl;public;
begin
{$ifdef Debug}
Debug('|breakpoints_table|');
{$endif}
end;
procedure annotate_record;cdecl;public;
begin
{$ifdef Debug}
Debug('|record|');
{$endif}
end;
procedure annotate_breakpoints_table_end;cdecl;public;
begin
{$ifdef Debug}
Debug('|breakpoints_table_end|');
{$endif}
end;
procedure annotate_frames_invalid;cdecl;public;
begin
{$ifdef Debug}
Debug('|frames_invalid|');
{$endif}
end;
procedure annotate_frame_begin(level:longint;pc:CORE_ADDR);cdecl;public;
begin
{$ifdef Debug}
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 Debug}
Debug('|frame_address|');
{$endif}
end;
procedure annotate_frame_address_end;cdecl;public;
begin
{$ifdef Debug}
Debug('|frame_address_end|');
{$endif}
end;
procedure annotate_frame_function_name;cdecl;public;
begin
{$ifdef Debug}
Debug('|frame_function_name|');
{$endif}
with curr_gdb^ do
function_start:=gdboutputbuf.idx;
end;
procedure annotate_frame_args;cdecl;public;
begin
{$ifdef Debug}
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 Debug}
Debug('|frame_source_begin|');
{$endif}
with curr_gdb^ do
args_end:=gdboutputbuf.idx;
end;
procedure annotate_frame_source_file;cdecl;public;
begin
{$ifdef Debug}
Debug('|frame_source_file|');
{$endif}
with curr_gdb^ do
file_start:=gdboutputbuf.idx;
end;
procedure annotate_frame_source_file_end;cdecl;public;
begin
{$ifdef Debug}
Debug('|frame_source_file_end|');
{$endif}
with curr_gdb^ do
file_end:=gdboutputbuf.idx;
end;
procedure annotate_frame_source_line;cdecl;public;
begin
{$ifdef Debug}
Debug('|frame_source_line|');
{$endif}
with curr_gdb^ do
line_start:=gdboutputbuf.idx;
end;
procedure annotate_frame_source_end;cdecl;public;
begin
{$ifdef Debug}
Debug('|frame_source_end|');
{$endif}
with curr_gdb^ do
line_end:=gdboutputbuf.idx;
end;
procedure annotate_frame_where;cdecl;public;
begin
{$ifdef Debug}
Debug('|frame_where|');
{$endif}
end;
procedure annotate_frame_end;cdecl;public;
var
fe : pframeentry;
c : char;
err : integer;
begin
{$ifdef Debug}
Debug('|frame_end|');
{$endif}
with curr_gdb^ do
begin
if (not record_frames) or (not frame_begin_seen) then
exit;
{ This can happen, when the function has no Debugging information }
if (args_start >= 0) and (args_end < 0) then
args_end:=gdboutputbuf.idx;
frame_begin_seen:=false;
fe:=get_frameentry(frame_level);
fe^.address:=current_address;
fe^.level:=frame_level;
if (function_start>=0) then
begin
c:=gdboutputbuf.buf[function_end];
gdboutputbuf.buf[function_end]:=#0;
fe^.function_name:=strnew(gdboutputbuf.buf+function_start);
gdboutputbuf.buf[function_end]:=c;
end;
if (file_start>=0) then
begin
c:=gdboutputbuf.buf[file_end];
gdboutputbuf.buf[file_end]:=#0;
fe^.file_name:=strnew(gdboutputbuf.buf+file_start);
gdboutputbuf.buf[file_end]:=c;
end;
if (args_start>=0) then
begin
if (gdboutputbuf.buf[args_end-1]=#10) then
dec(args_end);
c:=gdboutputbuf.buf[args_end];
gdboutputbuf.buf[args_end]:=#0;
fe^.args:=strnew(gdboutputbuf.buf+args_start);
gdboutputbuf.buf[args_end]:=c;
end;
if (line_start>=0) then
begin
c:=gdboutputbuf.buf[line_end];
gdboutputbuf.buf[line_end]:=#0;
{ sscanf(gdb_output_buffer+line_start,'%d',&fe^.line_number); }
val(strpas(pchar(@gdboutputbuf.buf[line_start])),fe^.line_number,err);
gdboutputbuf.buf[line_end]:=c;
end;
end;
end;
procedure annotate_quit;cdecl;public;
begin
{$ifdef Debug}
Debug('|quit|');
{$endif}
end;
procedure annotate_arg_begin;cdecl;public;
begin
{$ifdef Debug}
Debug('|arg_begin|');
{$endif}
end;
procedure annotate_arg_name_end;cdecl;public;
begin
{$ifdef Debug}
Debug('|arg_name_end|');
{$endif}
end;
procedure annotate_arg_value(typ:pointer);cdecl;public;
begin
{$ifdef Debug}
Debug('|arg_value|');
{$endif}
end;
procedure annotate_arg_end;cdecl;public;
begin
{$ifdef Debug}
Debug('|arg_end|');
{$endif}
end;
procedure annotate_source(filename:pchar;line,character,mid:longint;pc:CORE_ADDR);cdecl;public;
begin
{$ifdef Debug}
Debug('|source|');
{$endif}
end;
procedure annotate_function_call;cdecl;public;
begin
{$ifdef Debug}
Debug('|function_call|');
{$endif}
end;
procedure annotate_signal_handler_caller;cdecl;public;
begin
{$ifdef Debug}
Debug('|signal_handler_caller|');
{$endif}
end;
procedure annotate_array_section_begin(index:longint;elttype:pointer);cdecl;public;
begin
{$ifdef Debug}
Debug('|array_section_begin()|');
{$endif}
end;
procedure annotate_elt_rep(repcount:longint);cdecl;public;
begin
{$ifdef Debug}
Debug('|elt_rep()|');
{$endif}
end;
procedure annotate_elt_rep_end;cdecl;public;
begin
{$ifdef Debug}
Debug('|elt_rep_end|');
{$endif}
end;
procedure annotate_elt;cdecl;public;
begin
{$ifdef Debug}
Debug('|elt|');
{$endif}
end;
procedure annotate_array_section_end;cdecl;public;
begin
{$ifdef Debug}
Debug('|array_section_end|');
{$endif}
end;
procedure annotate_display_begin;cdecl;public;
begin
{$ifdef Debug}
Debug('|display_begin|');
{$endif}
end;
procedure annotate_display_number_end;cdecl;public;
begin
{$ifdef Debug}
Debug('|display_number_end|');
{$endif}
end;
procedure annotate_display_format;cdecl;public;
begin
{$ifdef Debug}
Debug('|display_format|');
{$endif}
end;
procedure annotate_display_expression;cdecl;public;
begin
{$ifdef Debug}
Debug('|display_expression|');
{$endif}
end;
procedure annotate_display_expression_end;cdecl;public;
begin
{$ifdef Debug}
Debug('|display_expression_end|');
{$endif}
end;
procedure annotate_display_value;cdecl;public;
begin
{$ifdef Debug}
Debug('|display_value|');
{$endif}
end;
procedure annotate_display_end;cdecl;public;
begin
{$ifdef Debug}
Debug('|display_end|');
{$endif}
end;
procedure annotate_field (num:longint);cdecl;public;
begin
{$ifdef Debug}
Debug('a_field(%d)');
{$endif}
end;
procedure annotate_field_begin(typ:pointer);cdecl;public;
begin
{$ifdef Debug}
Debug('a_field_begin\n');
{$endif}
end;
procedure annotate_field_name_end;cdecl;public;
begin
{$ifdef Debug}
Debug('a_field_name_end\n');
{$endif}
end;
procedure annotate_field_value;cdecl;public;
begin
{$ifdef Debug}
Debug('a_field_value\n');
{$endif}
end;
procedure annotate_field_end;cdecl;public;
begin
{$ifdef Debug}
Debug('a_field_end\n');
{$endif}
end;
procedure annotate_value_history_begin (histindex:longint;typ:pointer);cdecl;public;
begin
{$ifdef Debug}
Debug('a_value_history_begin(%d)\n');
{$endif}
end;
procedure annotate_value_begin (typ:pointer);cdecl;public;
begin
{$ifdef Debug}
Debug('a_value_begin\n');
{$endif}
end;
procedure annotate_value_history_value;cdecl;public;
begin
{$ifdef Debug}
Debug('a_value_history_value\n');
{$endif}
end;
procedure annotate_value_history_end;cdecl;public;
begin
{$ifdef Debug}
Debug('a_value_history_end\n');
{$endif}
end;
procedure annotate_value_end;cdecl;public;
begin
{$ifdef Debug}
Debug('a_value_end\n');
{$endif}
end;
procedure _initialize_annotate;cdecl;public;
begin
end;
procedure fputs_unfiltered(linebuffer:pchar;stream:pointer);cdecl;public;
begin
with curr_gdb^ do
{$ifndef gdb_v416}
if stream = gdb_stderr then
gdberrorbuf.append(linebuffer)
else
{$endif not gdb_v416}
gdboutputbuf.append(linebuffer);
end;
procedure CreateBreakPointHook(var b:breakpoint);cdecl;
var
sym : symtab_and_line;
begin
sym:=find_pc_line(b.address,0);
with curr_gdb^ do
begin
last_breakpoint_number:=b.number;
{ function breakpoints have zero as file and as line !!
but they are valid !! }
invalid_breakpoint_line:=(b.line_number<>sym.line) and (b.line_number<>0);
last_breakpoint_address:=b.address;
last_breakpoint_line:=sym.line;
if assigned(sym.symtab) then
last_breakpoint_file:=sym.symtab^.filename
else
last_breakpoint_file:=nil;
end;
end;
{*****************************************************************************
tgdbinterface
*****************************************************************************}
constructor tgdbinterface.init;
begin
gdboutputbuf.init;
gdberrorbuf.init;
record_frames:=true;
{$ifndef GDB_V416}
(* GDB_FILE *
gdb_file_init_astring (n)
int n;
should we use xmalloc ?
gdb could resize the buffer => crash,
but normally it should not if unfiltered !! PM *)
gdb_stdout^.ts_streamtype := astring;
gdb_stdout^.ts_strbuf := gdboutputbuf.buf;
gdb_stdout^.ts_buflen := gdboutputbuf.size;
gdboutputbuf.link:=gdb_stdout;
gdb_stderr^.ts_streamtype := astring;
gdb_stderr^.ts_strbuf := gdberrorbuf.buf;
gdb_stderr^.ts_buflen := gdberrorbuf.size;
gdberrorbuf.link:=gdb_stderr;
{$endif not GDB_V416}
gdb__init;
curr_gdb:=@self;
command_level:=0;
{ set output mode for GDB }
{ only these values disable filtering
DONT CHANGE THEM !!! PM }
gdb_command('set width 0xffffffff');
gdb_command('set height 0xffffffff');
{ other standard commands used for fpc debugging }
gdb_command('set print demangle off');
gdb_command('set gnutarget auto');
gdb_command('set language auto');
gdb_command('set print vtbl on');
gdb_command('set print object on');
gdb_command('set print null-stop');
end;
destructor tgdbinterface.done;
begin
clear_frames;
gdb_done;
gdboutputbuf.done;
gdberrorbuf.done;
end;
procedure tgdbinterface.gdb__init;
begin
gdboutputbuf.reset;
gdberrorbuf.reset;
create_breakpoint_hook:=@CreateBreakPointHook;
end;
procedure tgdbinterface.gdb_done;
begin
if debuggee_started then
begin
current_target.to_kill;
current_target.to_close(1);
end;
create_breakpoint_hook:=nil;
end;
function tgdbinterface.error:boolean;
begin
error:=got_error;
end;
function tgdbinterface.error_num:longint;
begin
error_num:=gdb_error;
end;
var
top_level_val : longint;
procedure tgdbinterface.gdb_command(const s:string);
var
command : array[0..256] of char;
s2 : string;
old_quit_return,
old_error_return : jmp_buf;
begin
inc(command_level);
move(s[1],command,length(s));
command[length(s)]:=#0;
old_quit_return:=quit_return;
old_error_return:=error_return;
gdb_error:=0;
got_error:=false;
stop_breakpoint_number:=0;
{ Trap quit commands }
s2:=s;
while (length(s2)>0) and ((s2[1]=' ') or (s2[1]=#9)) do
s2:=copy(s2,2,255);
if (length(s2)>0) and
(UpCase(s2[1])='Q') and
((length(s2)=1) or
(s2[2]=' ') or
((UpCase(s2[2])='U') and
((length(s2)=2) or
(s2[3]=' ') or
((UpCase(s2[3])='I') and
((length(s2)=3) or
(s2[4]=' ') or
((UpCase(s2[4])='T') and
((length(s2)=4) or
(s2[5]=' ')
))))))) then
begin
if not AllowQuit then
exit;
end;
{$ifdef DebugCommand}
Debug('start of handle_gdb_command ('+s+')');
{$endif}
top_level_val:=setjmp(error_return);
if top_level_val=0 then
begin
quit_return:=error_return;
execute_command(@command,0);
{$ifdef go32v2}
reload_fs;
{$endif go32v2}
end
else
{$ifdef Debug}
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);
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 : longint;
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:longint;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);
end;
procedure tgdbinterface.StartSession;
begin
DoStartSession;
end;
procedure tgdbinterface.BreakSession;
begin
DoBreakSession;
end;
procedure tgdbinterface.EndSession(code:longint);
begin
Debuggee_started:=false;
{$ifdef Go32v2}
inferior_pid:=0;
{$endif}
DoEndSession(code);
end;
procedure tgdbinterface.DebuggerScreen;
begin
{$ifdef Debug}
Debug('|DebuggerScreen|');
{$endif}
if user_screen_shown then
DoDebuggerScreen;
user_screen_shown:=false;
end;
procedure tgdbinterface.UserScreen;
begin
{$ifdef Debug}
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 Debug}
var
s : string;
{$endif}
begin
{$ifdef Debug}
Str(line,S);
Debug('|SelectSource '+fn+':'+s+'|');
{$endif}
end;
procedure tgdbinterface.DoStartSession;
begin
end;
procedure tgdbinterface.DoBreakSession;
begin
end;
procedure tgdbinterface.DoEndSession(code:longint);
begin
end;
procedure tgdbinterface.DoDebuggerScreen;
begin
end;
procedure tgdbinterface.DoUserScreen;
begin
end;
function tgdbinterface.AllowQuit : boolean;
begin
AllowQuit:=true;
end;
var
version : pchar;cvar;
function GDBVersion : string;
begin
GDBVersion:='GDB '+StrPas(version);
end;
const next_exit : pointer = nil;
procedure DoneLibGDB;
begin
exitproc:=next_exit;
{$ifndef GDB_V416}
if assigned(gdb_stdout) then
dispose(gdb_stdout);
gdb_stdout:=nil;
if assigned(gdb_stderr) then
dispose(gdb_stderr);
gdb_stderr:=nil;
{$endif not GDB_V416}
end;
{$ifndef GDB_V416}
{$ifndef go32v2}
{$ifndef win32}
var
stdout : p_c_file;cvar;external;
stderr : p_c_file;cvar;external;
{$endif win32}
{$else go32v2}
{ the type is not really important
for external cvars PM
but the main problem is that stdout and stderr
and defined as macros under DJGPP !! }
var
__dj_stdout : c_file;cvar;external;
__dj_stderr : c_file;cvar;external;
{$endif go32v2}
{$endif not GDB_V416}
procedure InitLibGDB;
{$ifdef supportexceptions}
var
OldSigInt : SignalHandler;
{$endif supportexceptions}
begin
{$ifdef supportexceptions}
{$ifdef go32v2}
OldSigInt:=Signal(SIGINT,SignalHandler(@SIG_DFL));
{$else}
OldSigInt:=Signal(SIGINT,SignalHandler(SIG_DFL));
{$endif}
{$endif supportexceptions}
{$ifndef GDB_V416}
new(gdb_stdout);
gdb_stdout^.ts_streamtype := afile;
{$ifndef go32v2}
{$ifdef win32}
gdb_stdout^.ts_filestream := _impure_ptr^.stdout;
{$else not win32 }
gdb_stdout^.ts_filestream := stdout;{p_c_file(textrec(output).handle); was wrong PM }
{$endif not win32 }
{$else go32v2}
gdb_stdout^.ts_filestream := @__dj_stdout;
{$endif go32v2}
gdb_stdout^.ts_strbuf := nil;
gdb_stdout^.ts_buflen := 0;
new(gdb_stderr);
gdb_stderr^.ts_streamtype := afile;
{$ifndef go32v2}
{$ifdef win32}
gdb_stderr^.ts_filestream := _impure_ptr^.stderr;
{$else not win32 }
gdb_stderr^.ts_filestream := stderr;
{$endif not win32 }
{$else go32v2}
gdb_stderr^.ts_filestream := @__dj_stderr;
{$endif go32v2}
gdb_stderr^.ts_strbuf := nil;
gdb_stderr^.ts_buflen := 0;
{$endif not GDB_V416}
next_exit:=exitproc;
exitproc:=@DoneLibGDB;
gdb_init;
{$ifdef supportexceptions}
Signal(SIGINT,OldSigInt);
{$endif supportexceptions}
if setjmp(error_return)=0 then
begin
quit_return:=error_return;
exit;
end
else
begin
{$ifdef Debug}
Debug('|LongJump to Init|');
{$endif}
{$ifdef go32v2}
RunError(99);
{$endif def go32v2}
end;
WatchDog:=0;
end;
begin
InitLibGDB;
end.
{
$Log$
Revision 1.4 2000-02-06 22:32:45 pierre
+ Get_current_frame and Set_current_frame
Revision 1.3 2000/01/10 11:14:42 peter
* fixed crash in getaddrsyminfo with symfync=nil
Revision 1.2 1999/11/26 14:50:40 pierre
* shell32 lib is not needed in gdbint unit
Revision 1.1 1999/11/24 23:36:32 peter
* moved to packages dir
Revision 1.16 1999/11/09 22:58:08 pierre
+ symbol structure for function name
Revision 1.15 1999/11/03 09:35:06 peter
* linux updates
Revision 1.14 1999/10/08 15:22:53 pierre
* library order fixes
+ GDB 4.18 default now
Revision 1.13 1999/10/04 21:26:05 pierre
* Conditional stuff clarified
Revision 1.12 1999/09/28 23:42:06 pierre
+ win32 support changes
Revision 1.11 1999/09/07 09:17:52 pierre
* frames better recorded
* some v4.18 specific suff changed
Revision 1.10 1999/08/31 16:16:14 pierre
* setting height and width to unlimited was wrong
Revision 1.9 1999/08/24 21:29:29 pierre
+ reload_fs after C code calling
Revision 1.8 1999/08/23 09:17:22 pierre
+ Errors to gdberrorbuf
Revision 1.7 1999/07/12 14:52:57 peter
* ifdef 418 added
Revision 1.6 1999/07/12 13:08:18 pierre
+ added GDBVersion function
* tries to intercept quit command from GDB Window
+ AllowQuit method
Revision 1.5 1999/07/11 00:16:29 pierre
+ stuff for v4.18 for DJGPP
Revision 1.4 1999/07/07 13:12:59 peter
* @sig_fdl for go32v2
Revision 1.3 1999/07/05 13:05:49 michael
+ Fixed default handler
Revision 1.2 1999/06/29 12:18:34 pierre
* new procvar syntax fix
Revision 1.1 1999/05/22 13:43:00 peter
* moved
Revision 1.16 1999/02/11 13:03:26 pierre
Problem with last commit
+ added virtuals CommandBegin and CommandEnd
+ added command_level for TGDBInterface
Revision 1.15 1999/02/10 09:00:41 pierre
* duplicate call_reset removed
* frames allocation and freeing corrected
+ GetError and GetOutput pchar function added
+ stop_breakpoint_number to know why the program stopped
(used for watches)
Revision 1.14 1999/02/08 17:35:08 pierre
+ added Run made TraceStep TraceNext Continue virtual
Revision 1.13 1999/02/08 13:59:59 pierre
- removed second debugger_started in TGDBController
+ StartTrace and Reset made virtual to be able to
change CmResetDebugger state in IDE
Revision 1.12 1999/02/08 11:37:11 pierre
+ added procargs var and SetArgs method
Revision 1.11 1999/02/05 17:17:45 pierre
* invalid_line renamed invalid_breakpoint_line
Revision 1.10 1999/02/05 08:35:38 pierre
* removed libgdb for cond USE_GDB_OBJS
Revision 1.9 1999/02/04 16:33:35 pierre
+ gdb_file and use_gdb_file added for debug writing
Revision 1.8 1999/02/04 14:35:00 pierre
* small go32v2 fixes
Revision 1.7 1999/02/03 15:57:38 pierre
* typo error
Revision 1.6 1999/02/03 15:03:07 pierre
+ added error_num function
Revision 1.5 1999/02/03 15:01:00 pierre
* a symtab_and_line record changes from v4.16 to v4.17
Revision 1.4 1999/01/22 18:05:41 pierre
* change dir sep from to / for dos
Revision 1.3 1999/01/22 10:23:50 peter
* small update to get it working with the IDE
Revision 1.2 1999/01/18 11:00:34 pierre
* frames was not initialized
Revision 1.1 1998/10/07 15:57:38 peter
* initial version
Revision 1.1 1998/10/07 15:48:20 peter
* initial version
}
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