Remove DJGPP GDB stub

Once more, SRB2 no longer works on DOS so this is irrelevant
This commit is contained in:
Eidolon 2022-07-17 19:48:49 -05:00
parent 4269f4eab6
commit c278800d66
18 changed files with 0 additions and 3503 deletions

View file

@ -1,83 +0,0 @@
#
# Makefile for GDB Stub for DJGPP/Mingw 0.3 source distribution
#
# Copyright 2000 by Jonathan Brogdon
#
include Makefile.cfg
default:
@$(ECHO) Welcome to GDB Stub for DJGPP & Mingw 0.3 source distribution!
@$(ECHO) To make the GDB stub type:
@$(ECHO) make all - Make library and demo programs
@$(ECHO) make library - Make only library
@$(ECHO) make demo - Make demo program
@$(ECHO) make install - Install library and header files
@$(ECHO) make uninstall - Uninstall library and header files
@$(ECHO) make clean - Remove .o files
@$(ECHO) make distclean - Remove ready binaries and .o files
@$(ECHO) make dep - Make dependences
# Inform make of phony targets
.PHONY: library demo clean blankdep dep distclean install
all: dep library demo
@$(ECHO) Library and demo program created
./lib/libgdbst.a:
@mkdir -p lib
@make -s -C ./src/library all
library: ./lib/libgdbst.a
@$(ECHO) Library created
demo: ./lib/libgdbst.a
@mkdir -p demo
@make -s -C ./src/demo all
@$(ECHO) Demo program created
clean:
@make -s -C ./src/library clean
@make -s -C ./src/demo clean
@$(ECHO) Clean complete
blankdep:
# Create blank depend.dep files to avoid errors
@$(ECHOBLANK) > ./src/library/depend.dep
@$(ECHOBLANK) > ./src/demo/depend.dep
# Now carry on as usual
dep: blankdep
@make -s -C ./src/library dep
@make -s -C ./src/demo dep
@$(ECHO) Created dependency files
# Blank all the dependencies too
distclean: blankdep
@make -s -C ./src/library distclean
@make -s -C ./src/demo distclean
@$(RM) -r ./demo/
@$(RM) -r ./lib/
@$(ECHO) Cleaned up files
install: library
ifdef DJGPP
@cp lib/*.a $(DJDIR)/lib
@ginstall -d $(DJDIR)/include
@cp include/*.h $(DJDIR)/include
@$(ECHO) GDB Stub Library for DJGPP installed
endif
uninstall:
ifdef DJGPP
@$(RM) $(DJDIR)/lib/libgdb.a
@$(RM) $(DJDIR)/include/i386-stub.h
@$(ECHO) GDB Stub Library for DJGPP uninstalled
ifdef DJGPP

View file

@ -1,27 +0,0 @@
GDB Stub for DJGPP 0.1 Announcement
===================================
GDB Stub for DJGPP Copyright 2000 by Jonathan Brogdon
Hello.
I'd like to announce the GDB Stub for DJGPP for DJGPP, the latest version of
a GDB stub for DJGPP targets. The GDB Stub for DJGPP conforms to the GNU GDB stub
interface as specified in the GDB User's Manual. It allows for debugging of a
DJGPP target remotely over a serial link with GDB.
It comes with an example program for demonstrating remote debugging of
DJGPP targets, and documentation (man and HTML pages).
The GDB Stub for DJGPP is distributed under the GNU Library General Public License
(LGPL).
If you have any questions relating to libsocket, please mail me and I'll
be happy to help.
Thanks,
Jonathan Brogdon
<brogdo@austin.rr.com>
June 29th 2000

View file

@ -1,43 +0,0 @@
/****************************************************************************
*
* i386-stub.h
*
* Description: Data definitions and constants for low level
* GDB server support.
*
* Terms of use: This software is provided for use under the terms
* and conditions of the GNU General Public License.
* You should have received a copy of the GNU General
* Public License along with this program; if not, write
* to the Free Software Foundation, Inc., 59 Temple Place
* Suite 330, Boston, MA 02111-1307, USA.
*
* Credits: Created by Jonathan Brogdon
*
* History
* Engineer: Date: Notes:
* --------- ----- ------
* Jonathan Brogdon 20000617 Genesis
* Gordon Schumacher 20020212 Updated for modularity
*
****************************************************************************/
#ifndef _GDBSTUB_H_
#define _GDBSTUB_H_
#ifdef __cplusplus
extern "C" {
#endif
extern int gdb_serial_init(unsigned int port, unsigned int speed);
extern void gdb_target_init(void);
extern void gdb_target_close(void);
extern void set_debug_traps(void);
extern void restore_traps(void);
extern void breakpoint(void);
#ifdef __cplusplus
}
#endif
#endif /* _GDBSTUB_H_ */

View file

@ -1,20 +0,0 @@
The makefile contains the information about the target products
available.
Note: Makefile.cfg contains macros for various tools used during
the build process. Of particular note: some folks use the echo.exe
that is available from the DJGPP (or other) site(s). Others may not
have installed this, and therefore calls to echo during the build
will use the built-in DOS echo command. When attempting to echo a
blank line, the arguments to these two echo commands are different.
Therefore, makefile.cfg contains the macro ECHOBLANK. Please set
this macro according to the needs of your environment. If you change
this in makefile.cfg, it will be picked up by all other project
makefiles.
Type 'make' to see a list of targets. When the 'install'
target is made, the libgdb.a will be copied into your $(DJDIR)/lib
directory. In addition, the i386-stub.h file will be copied into
your $(DJDIR)/include directory. The uninstall target will remove
these files.

View file

@ -1,454 +0,0 @@
GNU LIBRARY GENERAL PUBLIC LICENSE
**********************************
Version 2, June 1991
Copyright (C) 1991 Free Software Foundation, Inc.
675 Mass Ave, Cambridge, MA 02139, USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
[This is the first released version of the library GPL. It is
numbered 2 because it goes with version 2 of the ordinary GPL.]
Preamble
========
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
Licenses are intended to guarantee your freedom to share and change
free software--to make sure the software is free for all its users.
This license, the Library General Public License, applies to some
specially designated Free Software Foundation software, and to any
other libraries whose authors decide to use it. You can use it for
your libraries, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it in
new free programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
distribute copies of the library, or if you modify it.
For example, if you distribute copies of the library, whether gratis
or for a fee, you must give the recipients all the rights that we gave
you. You must make sure that they, too, receive or can get the source
code. If you link a program with the library, you must provide
complete object files to the recipients so that they can relink them
with the library, after making changes to the library and recompiling
it. And you must show them these terms so they know their rights.
Our method of protecting your rights has two steps: (1) copyright
the library, and (2) offer you this license which gives you legal
permission to copy, distribute and/or modify the library.
Also, for each distributor's protection, we want to make certain
that everyone understands that there is no warranty for this free
library. If the library is modified by someone else and passed on, we
want its recipients to know that what they have is not the original
version, so that any problems introduced by others will not reflect on
the original authors' reputations.
Finally, any free program is threatened constantly by software
patents. We wish to avoid the danger that companies distributing free
software will individually obtain patent licenses, thus in effect
transforming the program into proprietary software. To prevent this,
we have made it clear that any patent must be licensed for everyone's
free use or not licensed at all.
Most GNU software, including some libraries, is covered by the
ordinary GNU General Public License, which was designed for utility
programs. This license, the GNU Library General Public License,
applies to certain designated libraries. This license is quite
different from the ordinary one; be sure to read it in full, and don't
assume that anything in it is the same as in the ordinary license.
The reason we have a separate public license for some libraries is
that they blur the distinction we usually make between modifying or
adding to a program and simply using it. Linking a program with a
library, without changing the library, is in some sense simply using
the library, and is analogous to running a utility program or
application program. However, in a textual and legal sense, the linked
executable is a combined work, a derivative of the original library,
and the ordinary General Public License treats it as such.
Because of this blurred distinction, using the ordinary General
Public License for libraries did not effectively promote software
sharing, because most developers did not use the libraries. We
concluded that weaker conditions might promote sharing better.
However, unrestricted linking of non-free programs would deprive the
users of those programs of all benefit from the free status of the
libraries themselves. This Library General Public License is intended
to permit developers of non-free programs to use free libraries, while
preserving your freedom as a user of such programs to change the free
libraries that are incorporated in them. (We have not seen how to
achieve this as regards changes in header files, but we have achieved
it as regards changes in the actual functions of the Library.) The
hope is that this will lead to faster development of free libraries.
The precise terms and conditions for copying, distribution and
modification follow. Pay close attention to the difference between a
"work based on the library" and a "work that uses the library". The
former contains code derived from the library, while the latter only
works together with the library.
Note that it is possible for a library to be covered by the ordinary
General Public License rather than by this special one.
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License Agreement applies to any software library which
contains a notice placed by the copyright holder or other
authorized party saying it may be distributed under the terms of
this Library General Public License (also called "this License").
Each licensee is addressed as "you".
A "library" means a collection of software functions and/or data
prepared so as to be conveniently linked with application programs
(which use some of those functions and data) to form executables.
The "Library", below, refers to any such software library or work
which has been distributed under these terms. A "work based on the
Library" means either the Library or any derivative work under
copyright law: that is to say, a work containing the Library or a
portion of it, either verbatim or with modifications and/or
translated straightforwardly into another language. (Hereinafter,
translation is included without limitation in the term
"modification".)
"Source code" for a work means the preferred form of the work for
making modifications to it. For a library, complete source code
means all the source code for all modules it contains, plus any
associated interface definition files, plus the scripts used to
control compilation and installation of the library.
Activities other than copying, distribution and modification are
not covered by this License; they are outside its scope. The act
of running a program using the Library is not restricted, and
output from such a program is covered only if its contents
constitute a work based on the Library (independent of the use of
the Library in a tool for writing it). Whether that is true
depends on what the Library does and what the program that uses
the Library does.
1. You may copy and distribute verbatim copies of the Library's
complete source code as you receive it, in any medium, provided
that you conspicuously and appropriately publish on each copy an
appropriate copyright notice and disclaimer of warranty; keep
intact all the notices that refer to this License and to the
absence of any warranty; and distribute a copy of this License
along with the Library.
You may charge a fee for the physical act of transferring a copy,
and you may at your option offer warranty protection in exchange
for a fee.
2. You may modify your copy or copies of the Library or any portion
of it, thus forming a work based on the Library, and copy and
distribute such modifications or work under the terms of Section 1
above, provided that you also meet all of these conditions:
a. The modified work must itself be a software library.
b. You must cause the files modified to carry prominent notices
stating that you changed the files and the date of any change.
c. You must cause the whole of the work to be licensed at no
charge to all third parties under the terms of this License.
d. If a facility in the modified Library refers to a function or
a table of data to be supplied by an application program that
uses the facility, other than as an argument passed when the
facility is invoked, then you must make a good faith effort
to ensure that, in the event an application does not supply
such function or table, the facility still operates, and
performs whatever part of its purpose remains meaningful.
(For example, a function in a library to compute square roots
has a purpose that is entirely well-defined independent of the
application. Therefore, Subsection 2d requires that any
application-supplied function or table used by this function
must be optional: if the application does not supply it, the
square root function must still compute square roots.)
These requirements apply to the modified work as a whole. If
identifiable sections of that work are not derived from the
Library, and can be reasonably considered independent and separate
works in themselves, then this License, and its terms, do not
apply to those sections when you distribute them as separate
works. But when you distribute the same sections as part of a
whole which is a work based on the Library, the distribution of
the whole must be on the terms of this License, whose permissions
for other licensees extend to the entire whole, and thus to each
and every part regardless of who wrote it.
Thus, it is not the intent of this section to claim rights or
contest your rights to work written entirely by you; rather, the
intent is to exercise the right to control the distribution of
derivative or collective works based on the Library.
In addition, mere aggregation of another work not based on the
Library with the Library (or with a work based on the Library) on
a volume of a storage or distribution medium does not bring the
other work under the scope of this License.
3. You may opt to apply the terms of the ordinary GNU General Public
License instead of this License to a given copy of the Library.
To do this, you must alter all the notices that refer to this
License, so that they refer to the ordinary GNU General Public
License, version 2, instead of to this License. (If a newer
version than version 2 of the ordinary GNU General Public License
has appeared, then you can specify that version instead if you
wish.) Do not make any other change in these notices.
Once this change is made in a given copy, it is irreversible for
that copy, so the ordinary GNU General Public License applies to
all subsequent copies and derivative works made from that copy.
This option is useful when you wish to copy part of the code of
the Library into a program that is not a library.
4. You may copy and distribute the Library (or a portion or
derivative of it, under Section 2) in object code or executable
form under the terms of Sections 1 and 2 above provided that you
accompany it with the complete corresponding machine-readable
source code, which must be distributed under the terms of Sections
1 and 2 above on a medium customarily used for software
interchange.
If distribution of object code is made by offering access to copy
from a designated place, then offering equivalent access to copy
the source code from the same place satisfies the requirement to
distribute the source code, even though third parties are not
compelled to copy the source along with the object code.
5. A program that contains no derivative of any portion of the
Library, but is designed to work with the Library by being
compiled or linked with it, is called a "work that uses the
Library". Such a work, in isolation, is not a derivative work of
the Library, and therefore falls outside the scope of this License.
However, linking a "work that uses the Library" with the Library
creates an executable that is a derivative of the Library (because
it contains portions of the Library), rather than a "work that
uses the library". The executable is therefore covered by this
License. Section 6 states terms for distribution of such
executables.
When a "work that uses the Library" uses material from a header
file that is part of the Library, the object code for the work may
be a derivative work of the Library even though the source code is
not. Whether this is true is especially significant if the work
can be linked without the Library, or if the work is itself a
library. The threshold for this to be true is not precisely
defined by law.
If such an object file uses only numerical parameters, data
structure layouts and accessors, and small macros and small inline
functions (ten lines or less in length), then the use of the object
file is unrestricted, regardless of whether it is legally a
derivative work. (Executables containing this object code plus
portions of the Library will still fall under Section 6.)
Otherwise, if the work is a derivative of the Library, you may
distribute the object code for the work under the terms of Section
6. Any executables containing that work also fall under Section 6,
whether or not they are linked directly with the Library itself.
6. As an exception to the Sections above, you may also compile or
link a "work that uses the Library" with the Library to produce a
work containing portions of the Library, and distribute that work
under terms of your choice, provided that the terms permit
modification of the work for the customer's own use and reverse
engineering for debugging such modifications.
You must give prominent notice with each copy of the work that the
Library is used in it and that the Library and its use are covered
by this License. You must supply a copy of this License. If the
work during execution displays copyright notices, you must include
the copyright notice for the Library among them, as well as a
reference directing the user to the copy of this License. Also,
you must do one of these things:
a. Accompany the work with the complete corresponding
machine-readable source code for the Library including
whatever changes were used in the work (which must be
distributed under Sections 1 and 2 above); and, if the work
is an executable linked with the Library, with the complete
machine-readable "work that uses the Library", as object code
and/or source code, so that the user can modify the Library
and then relink to produce a modified executable containing
the modified Library. (It is understood that the user who
changes the contents of definitions files in the Library will
not necessarily be able to recompile the application to use
the modified definitions.)
b. Accompany the work with a written offer, valid for at least
three years, to give the same user the materials specified in
Subsection 6a, above, for a charge no more than the cost of
performing this distribution.
c. If distribution of the work is made by offering access to copy
from a designated place, offer equivalent access to copy the
above specified materials from the same place.
d. Verify that the user has already received a copy of these
materials or that you have already sent this user a copy.
For an executable, the required form of the "work that uses the
Library" must include any data and utility programs needed for
reproducing the executable from it. However, as a special
exception, the source code distributed need not include anything
that is normally distributed (in either source or binary form)
with the major components (compiler, kernel, and so on) of the
operating system on which the executable runs, unless that
component itself accompanies the executable.
It may happen that this requirement contradicts the license
restrictions of other proprietary libraries that do not normally
accompany the operating system. Such a contradiction means you
cannot use both them and the Library together in an executable
that you distribute.
7. You may place library facilities that are a work based on the
Library side-by-side in a single library together with other
library facilities not covered by this License, and distribute
such a combined library, provided that the separate distribution
of the work based on the Library and of the other library
facilities is otherwise permitted, and provided that you do these
two things:
a. Accompany the combined library with a copy of the same work
based on the Library, uncombined with any other library
facilities. This must be distributed under the terms of the
Sections above.
b. Give prominent notice with the combined library of the fact
that part of it is a work based on the Library, and explaining
where to find the accompanying uncombined form of the same
work.
8. You may not copy, modify, sublicense, link with, or distribute the
Library except as expressly provided under this License. Any
attempt otherwise to copy, modify, sublicense, link with, or
distribute the Library is void, and will automatically terminate
your rights under this License. However, parties who have
received copies, or rights, from you under this License will not
have their licenses terminated so long as such parties remain in
full compliance.
9. You are not required to accept this License, since you have not
signed it. However, nothing else grants you permission to modify
or distribute the Library or its derivative works. These actions
are prohibited by law if you do not accept this License.
Therefore, by modifying or distributing the Library (or any work
based on the Library), you indicate your acceptance of this
License to do so, and all its terms and conditions for copying,
distributing or modifying the Library or works based on it.
10. Each time you redistribute the Library (or any work based on the
Library), the recipient automatically receives a license from the
original licensor to copy, distribute, link with or modify the
Library subject to these terms and conditions. You may not impose
any further restrictions on the recipients' exercise of the rights
granted herein. You are not responsible for enforcing compliance
by third parties to this License.
11. If, as a consequence of a court judgment or allegation of patent
infringement or for any other reason (not limited to patent
issues), conditions are imposed on you (whether by court order,
agreement or otherwise) that contradict the conditions of this
License, they do not excuse you from the conditions of this
License. If you cannot distribute so as to satisfy simultaneously
your obligations under this License and any other pertinent
obligations, then as a consequence you may not distribute the
Library at all. For example, if a patent license would not permit
royalty-free redistribution of the Library by all those who
receive copies directly or indirectly through you, then the only
way you could satisfy both it and this License would be to refrain
entirely from distribution of the Library.
If any portion of this section is held invalid or unenforceable
under any particular circumstance, the balance of the section is
intended to apply, and the section as a whole is intended to apply
in other circumstances.
It is not the purpose of this section to induce you to infringe any
patents or other property right claims or to contest validity of
any such claims; this section has the sole purpose of protecting
the integrity of the free software distribution system which is
implemented by public license practices. Many people have made
generous contributions to the wide range of software distributed
through that system in reliance on consistent application of that
system; it is up to the author/donor to decide if he or she is
willing to distribute software through any other system and a
licensee cannot impose that choice.
This section is intended to make thoroughly clear what is believed
to be a consequence of the rest of this License.
12. If the distribution and/or use of the Library is restricted in
certain countries either by patents or by copyrighted interfaces,
the original copyright holder who places the Library under this
License may add an explicit geographical distribution limitation
excluding those countries, so that distribution is permitted only
in or among countries not thus excluded. In such case, this
License incorporates the limitation as if written in the body of
this License.
13. The Free Software Foundation may publish revised and/or new
versions of the Library General Public License from time to time.
Such new versions will be similar in spirit to the present version,
but may differ in detail to address new problems or concerns.
Each version is given a distinguishing version number. If the
Library specifies a version number of this License which applies
to it and "any later version", you have the option of following
the terms and conditions either of that version or of any later
version published by the Free Software Foundation. If the Library
does not specify a license version number, you may choose any
version ever published by the Free Software Foundation.
14. If you wish to incorporate parts of the Library into other free
programs whose distribution conditions are incompatible with these,
write to the author to ask for permission. For software which is
copyrighted by the Free Software Foundation, write to the Free
Software Foundation; we sometimes make exceptions for this. Our
decision will be guided by the two goals of preserving the free
status of all derivatives of our free software and of promoting
the sharing and reuse of software generally.
NO WARRANTY
15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE
LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT
WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT
NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE
QUALITY AND PERFORMANCE OF THE LIBRARY IS WITH YOU. SHOULD THE
LIBRARY PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY
SERVICING, REPAIR OR CORRECTION.
16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY
MODIFY AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE
LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL,
INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR
INABILITY TO USE THE LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU
OR THIRD PARTIES OR A FAILURE OF THE LIBRARY TO OPERATE WITH ANY
OTHER SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
END OF TERMS AND CONDITIONS

View file

@ -1,67 +0,0 @@
#
# Makefile.cfg for GDB stub for DJGPP and Mingw
#
# libgdbst Copyright 2000 by Jonathan Brogodn
#
#
# GNU compiler & tools' flags
#
CC = gcc
CFLAGS = -Wall -Werror -march=i486 -O2 -g
# Archiver
AR = ar
ARFLAGS = -r
# Stripper
STRIP = strip
# Assembler
AS = as
ASFLAGS =
# Linker
LD = ld
LDFLAGS =
# Remove
RM = rm -f
# Echo
ECHO = echo
# Echo Blank
#ECHOBLANK = echo ""
ECHOBLANK = echo.
#
# check for OS... badly
#
ifndef DJDIR
ifndef DJGPP
WINDOWS=1
endif
endif
ifndef windir
ifndef WINDOWS
DJGPP=1
endif
endif
#
# Rules
#
.SUFFIXES: .c .asm .o
.asm.o:
@$(CC) $(CFLAGS) -I$(INC_PATH) -c -o ./$@ ./$<
.s.o:
@$(AS) $(ASFLAGS) ./$<
.c.o :
@$(CC) $(CFLAGS) -c -I$(INC_PATH) -c -o ./$@ ./$<

View file

@ -1,171 +0,0 @@
GDB Stub for DJGPP 0.2 Readme File
==================================
Copyright
---------
GDB Stub for DJGPP is distributed under the terms of the GNU Library
General Public License (GNU LGPL) - please see the document LICENSE,
which should be found in the same directory as this file.
Copyright (c) 2000 by Jonathan Brogdon, 2002 by Gordon Schumacher
What It Does
------------
The GDB stub is used to debug a DJGPP target remotely over a one of
the PC COM ports. GDB, running on a host machine, communicates with
the target using the GDB serial protocol over the serial link. For
more information on the GDB stub, see "Debugging with GDB, The GNU
Source-Level Debugger", by Richard M. Stallman and Roland H. Pesch
(http://sources.redhat.com/gdb/download/onlinedocs/gdb.html)
How It Works
------------
Exceptions:
The GDB stub needs to handle all processor exceptions. Since these
exceptions already handled by DJGPP, we cannot handle them directly.
DJGPP maps all processor exceptions to signals. Therefore, we can
install the GDB stub handler as the signal handler for those signals
that represent processor exceptions. The following table shows the
processor exception to signal mapping:
Exception/Interrupt: Exception #: Signal:
------------------- ----------- ------
Divide Error 0 SIGFPE
Debug Exception 1 SIGTRAP
NMI Interrupt 2 No signal defined
Breakpoint 3 SIGTRAP
INTO-detected overflow 4 SIGFPE
BOUND Range Exceeded 5 SIGSEGV
Invalid Opcode 6 No signal defined
Coprocessor not available 7 SIGNOFP
Double Fault 8 SIGSEGV
Coprocessor Seg overrun 9 SIGSEGV
Invalid Task State Seg 10 No signal defined
Segment not present 11 SIGSEGV
Stack Fault 12 SIGSEGV
General Protection Fault 13 SIGSEGV
Page Fault 14 SIGSEGV
Intel Reserved 15 No signal defined
Coprocessor Error 16 SIGFPE
The GDB stub handler services requests from the GDB host. These
requests are seen by the GDB stub handler as command messages from
the GDB host. These commands and command formats are defined in
"Debugging with GDB, The GNU Source-Level Debugger", by Richard M.
Stallman and Roland H. Pesch (http://sources.redhat.com/gdb/
download/onlinedocs/gdb.html -- one of many sources).
Serial Interface:
Interface functions for sending and receiving characters from the
serial interface must be provided by the engineer porting the GDB
stub. The following funtions must be provided to support the
implementation.
int getDebugChar(void);
void putDebugChar(int c);
There are a variety of serial libraries for DJGPP. The user may
already be using one of these libraries in their application, and
installing more than one serial library often causes conflicts.
To this end, a modular function layer was written that allows any
serial library to be used with the GDB stub. Layers have been
written to support SVAsync, DZComm, and the _bios_serialcom()
function. At the time of this writing, DZComm appears to work the
best for serial debugging.
Hard Coded Breakpoint:
A breakpoint() function is provided to manually invoke the stub.
This function, inserts a breakpoint instruction directly in the code
to invoke the GDB stub handler.
How You Use It
--------------
First, you need to select a serial library. In the i386-supp.c file,
there are lines of the form
// #include "some_layer.h"
Uncomment the line for the serial library you intend to use - or add
a new include line for a file written for some other library.
In the main() function of your target program, you should initilize
the GDB serial handlers and the GDB stub. The following functions
are provided in the GDB stub library for this purpose.
gdb_serial_init(unsigned int port, unsigned int speed);
gdb_target_init(void);
Where, port is the COM port number, and speed is the baud rate for
the serial link.
After initialing the GDB serial interface and target, you should
invoke the breakpoint() function somewhere. You may choose to do
this immediately after initialization, or at a specific location in
your code where you wish to set a breakpoint. By putting the
breakpoint() function in the beginning of main(), you can use the
GDB host to set a breakpoint at any place in your code.
Make sure that you use the '-g' option when compiling your files with
gcc.
After the target executable is running, start up gdb on the host,
passing the target executable as an argument.
Example: gdb demo.exe
Now, tell gdb which serial interface to use for communicating to
the target.
Example: (gdb) target remote COM1
This example uses COM1 on the host to communicate with the target.
GDB is now 'listening' on COM for a valid GDB serial packet.
Once your GDB host finds your target, you may need to tell GDB where
to find any source files which were used to generate your program.
Use the directory command to do this.
Example: (gdb) directory ../src/demo
That's it. You should now be able to single step through code, set
breakpoints, set variables, examine variables, any anthing else that
you would normally use GDB to accomplish.
What You Build
--------------
Read the INSTALL file for more information on installing the GDB stub
library. After installing the library, your code should include
i386-stub.h for function prototypes. In addition, your code should
link against the libgdb.a library. The source for a demonstration
program has been included with this distributias an example.
As an alternative, you can simply include the i386-stub and i386-supp
files and the layer header for the serial library you plan to use into
your project and link them in directly.
For More Info
-------------
See "Debugging with GDB, The GNU Source-Level Debugger", by Richard
M. Stallman and Roland H. Pesch (http://sources.redhat.com/gdb/
download/onlinedocs/gdb.html -- one of many sources).
TODO
----
Port for network operation.
Contact Info
------------
My contact info is below. If you have any comments, suggestions, bug
reports or problems, please mail me, and I'll see what I can do.
Regards,
Jonathan Brogdon
<brogdon@austin.rr.com>
6th June 2000
Modular update:
Gordon Schumacher
<gordons@valleyhold.org>
12th February 2002

View file

@ -1,46 +0,0 @@
#define POLY 0x8408
/*
// 16 12 5
// this is the CCITT CRC 16 polynomial X + X + X + 1.
// This works out to be 0x1021, but the way the algorithm works
// lets us use 0x8408 (the reverse of the bit pattern). The high
// bit is always assumed to be set, thus we only use 16 bits to
// represent the 17 bit value.
*/
#include "crc.h"
WORD crc16(char *data_p, WORD length)
{
unsigned char i;
unsigned int data;
unsigned int crc = 0xffff;
if (length == 0)
return (~crc);
do
{
for (i=0, data=(unsigned int)0xff & *data_p++;
i < 8;
i++, data >>= 1)
{
if ((crc & 0x0001) ^ (data & 0x0001))
crc = (crc >> 1) ^ POLY;
else crc >>= 1;
}
} while (--length);
crc = ~crc;
data = crc;
crc = (crc << 8) | ((data >> 8) & 0xff);
return (crc);
}

View file

@ -1,42 +0,0 @@
#
# Makefile for GDB Stub demo
# Written by Jonathan Brogodn
#
# GDB Stub for DJGPP Copyright 2000 by Jonathan Brogdon
#
include ../../Makefile.cfg
CFLAGS += -g
CFLAGS += -I../../include -I../include -I.
CFLAGS += -DDEBUG_COM_PORT=1
CFLAGS += -DDEBUG_COM_PORT_SPEED=9600
CFLAGS += -DREMOTE_DEBUGGING
# Objects to build
OBJS = serdbg.o crc_16.o
all: demo
demo: $(OBJS)
ifdef DJGPP
@$(LD) $(LDFLAGS) -Map ./$@.map -o../../demo/$@.exe $(DJDIR)/lib/crt0.o $(OBJS) -L$(DJDIR)/lib -L../../lib -lgdbst -ldzcom -lc -lgcc
endif
ifdef WINDOWS
@$(LD) $(LDFLAGS) -Map ./$@.map -o../../demo/$@.exe $(DJDIR)/lib/crt0.o $(OBJS) -L../../lib -lgdbst -lwsock32 -lc -lgcc
endif
clean:
@$(RM) $(OBJS)
@$(RM) *.map
distclean: clean
@$(RM) $(OBJS)
@$(RM) depend.dep
@$(RM) ../../demo/*.exe
dep:
@$(CC) $(CFLAGS) -M *.c > depend.dep
$(OBJS):
include depend.dep

View file

@ -1,102 +0,0 @@
/***********************************************************************
* serdbg.c
*
* Description: Pretty simple demonstration program. It accomplishes
* the following.
*
* 1. Allocate a block of memory Feel free to change
* size (memBlockSize) with debugger.
*
* 2. Writes a word pattern to the entire block. Feel
* free to change the pattern (memPatternWord) with
* debugger.
*
* 3. Computes the CRC-16 on the block. Feel free to
* check the size with the debuger.
*
* 4. Free the memory block allocated in step 1. Repeat
* step 1. If you wish to exit, set doneFlag to 0 with
* the debugger.
*
* Credits: Created by Jonathan Brogdon
*
* Terms of use: Use as you will.
*
* Global Data: None.
* Global Functions: main
*
* History
* Engineer: Date: Notes:
* --------- ----- ------
* Jonathan Brogdon 070500 Genesis
*
***********************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <i386-stub.h>
#include <crc.h>
#define MEM_BLOCK_SIZE 100 /* Words */
#define MEM_PATTERN_WORD 0x55AA
void write_mem_pattern(unsigned short*, unsigned short, unsigned short);
/************************************************************************
*
* main()
*
************************************************************************/
int main(int argc, char *argv[])
{
volatile int doneFlag = 0;
unsigned short crcValue = 0;
unsigned short * memBlockPtr = NULL;
short memBlockSize = MEM_BLOCK_SIZE;
short memPatternWord = MEM_PATTERN_WORD;
#ifdef REMOTE_DEBUGGING
/* Only setup if demonstrating remote debugging */
gdb_serial_init(DEBUG_COM_PORT,DEBUG_COM_PORT_SPEED);
gdb_target_init();
breakpoint();
#endif
while(doneFlag != 1)
{
memBlockSize = MEM_BLOCK_SIZE;
memPatternWord = MEM_PATTERN_WORD;
memBlockPtr = (unsigned short *) malloc((int)memBlockSize);
write_mem_pattern(memBlockPtr, memBlockSize, memPatternWord);
crcValue = crc16((char *)memBlockPtr,memBlockSize);
free(memBlockPtr);
}
exit(0);
}
/************************************************************************
*
* write_mem_pattern()
*
* Description: Writes a word pattern to a block of RAM.
*
************************************************************************/
void write_mem_pattern(unsigned short *block, unsigned short blockSize, unsigned short patternWord)
{
int index = 0;
for(index = 0; index < blockSize; index++)
{
block[index] = patternWord;
}
}

View file

@ -1,20 +0,0 @@
/*
* CRC.H - header file for CRC functions
*/
#ifndef _CRC_H_
#define _CRC_H_
#include <stdlib.h> /* For size_t */
typedef unsigned char BYTE;
typedef unsigned short WORD;
typedef unsigned long DWORD;
/*
** File: CRC-16.C
*/
WORD crc16(char *data_p, WORD length);
#endif /* _CRC_H_ */

View file

@ -1,30 +0,0 @@
/****************************************************************************
*
* i386-supp.h
*
* Description: Data definitions and constants for low level
* GDB stub support.
*
* Terms of use: This software is provided for use under the terms
* and conditions of the GNU General Public License.
* You should have received a copy of the GNU General
* Public License along with this program; if not, write
* to the Free Software Foundation, Inc., 59 Temple Place
* Suite 330, Boston, MA 02111-1307, USA.
*
* Credits: Created by Jonathan Brogdon
*
* History
* Engineer: Date: Notes:
* --------- ----- ------
* Jonathan Brogdon 20000629 Genesis
* Gordon Schumacher 20020212 Updated for modularity
*
****************************************************************************/
#ifndef _GDBSUPP_H_
#define _GDBSUPP_H_
extern int putDebugChar(char c);
extern int getDebugChar(void);
#endif /* _GDBSUPP_H_ */

View file

@ -1,137 +0,0 @@
//=======================================================================================================
// bios_layer.h - Serial command layer for standard BIOS calls
// It's here if you want it, but I wouldn't suggest it...
//=======================================================================================================
//=======================================================================================================
//=======================================================================================================
#ifndef _BIOS_LAYER_H
#define _BIOS_LAYER_H
//===============================================================================
// Include files
//===============================================================================
#include <pc.h>
//===============================================================================
// Static variable definitions
//===============================================================================
unsigned comport;
//===============================================================================
// Inline function definitions
//===============================================================================
#define BIOS_SER_TIMEOUT 1000000
// Initialize the serial library
// Should return 0 if no error occurred
__inline int GDBStub_SerInit(int port)
{
comport = (unsigned) port;
return 0;
}
// Set the serial port speed (and other configurables)
// Should return 0 if the speed is set properly
__inline int GDBStub_SerSpeed(int speed)
{
unsigned bps;
switch (speed)
{
case 110:
bps = _COM_110;
break;
case 150:
bps = _COM_150;
break;
case 300:
bps = _COM_300;
break;
case 600:
bps = _COM_600;
break;
case 1200:
bps = _COM_1200;
break;
case 2400:
bps = _COM_2400;
break;
case 4800:
bps = _COM_4800;
break;
case 9600:
default:
bps = _COM_9600;
break;
}
_bios_serialcom(_COM_INIT, comport,
bps | _COM_NOPARITY | _COM_CHR8 | _COM_STOP1);
return 0;
}
// Check to see if there's room in the buffer to send data
// Should return 0 if it is okay to send
__inline int GDBStub_SerSendOk(void)
{
return 0;
}
// Send a character to the serial port
// Should return 0 if the send succeeds
__inline int GDBStub_SerSend(int c)
{
register int ret;
register int timeout = 0;
do
{
ret = _bios_serialcom(_COM_SEND, comport, (unsigned) c);
} while((ret != 0) && (timeout++ < BIOS_SER_TIMEOUT));
return (timeout >= BIOS_SER_TIMEOUT);
}
// Check to see if there are characters waiting in the buffer
// Should return 0 if there's data waiting
__inline int GDBStub_SerRecvOk(void)
{
return 0;
}
// Read a character from the serial port
// Should return the character read
__inline int GDBStub_SerRecv(void)
{
register int data;
register int timeout = 0;
do
{
data = _bios_serialcom(_COM_RECEIVE, comport, 0) & 0xff;
} while((data > 0xff) && (timeout++ < BIOS_SER_TIMEOUT));
return data;
}
#endif

View file

@ -1,169 +0,0 @@
//=======================================================================================================
// dzc_layer.h - Serial command layer for DZcomm
//
//=======================================================================================================
//=======================================================================================================
//=======================================================================================================
#ifndef _DZC_LAYER_H
#define _DZC_LAYER_H
//===============================================================================
// Include files
//===============================================================================
#include <dzcomm.h>
//===============================================================================
// Static variable definitions
//===============================================================================
comm_port *comport;
//===============================================================================
// Inline function definitions
//===============================================================================
// Initialize the serial library
// Should return 0 if no error occurred
__inline int GDBStub_SerInit(int port)
{
int ret;
comm com;
ret = dzcomm_init();
if (ret != 0)
{
switch (port)
{
case 4:
com = _com4;
break;
case 3:
com = _com3;
break;
case 2:
com = _com2;
break;
case 1:
default:
com = _com1;
break;
}
comport = comm_port_init(com);
}
return (ret == 0);
}
// Set the serial port speed (and other configurables)
// Should return 0 if the speed is set properly
__inline int GDBStub_SerSpeed(int speed)
{
baud_bits bps;
switch (speed)
{
case 110:
bps = _110;
break;
case 150:
bps = _150;
break;
case 300:
bps = _300;
break;
case 600:
bps = _600;
break;
case 1200:
bps = _1200;
break;
case 2400:
bps = _2400;
break;
case 4800:
bps = _4800;
break;
case 9600:
bps = _9600;
break;
case 19200:
bps = _19200;
break;
case 38400:
bps = _38400;
break;
case 57600:
bps = _57600;
break;
case 115200:
default:
bps = _115200;
break;
}
comm_port_set_baud_rate(comport, bps);
comm_port_set_parity(comport, NO_PARITY);
comm_port_set_data_bits(comport, BITS_8);
comm_port_set_stop_bits(comport, STOP_1);
comm_port_set_flow_control(comport, RTS_CTS);
comm_port_install_handler(comport);
return 0;
}
// Check to see if there's room in the buffer to send data
// Should return 0 if it is okay to send
__inline int GDBStub_SerSendOk(void)
{
return (comm_port_out_full(comport) == 0);
}
// Send a character to the serial port
// Should return 0 if the send succeeds
__inline int GDBStub_SerSend(int c)
{
return comm_port_out(comport, (unsigned char) c);
}
// Check to see if there are characters waiting in the buffer
// Should return 0 if there's data waiting
__inline int GDBStub_SerRecvOk(void)
{
return (comm_port_in_empty(comport) == 0);
}
// Read a character from the serial port
// Should return the character read
__inline int GDBStub_SerRecv(void)
{
return comm_port_test(comport);
}
#endif
/*==================================================================
$Log: $
===============================================================*/

File diff suppressed because it is too large Load diff

View file

@ -1,424 +0,0 @@
/***********************************************************************
* i386-supp.c
*
* Description: Support functions for the i386 GDB target stub.
*
* Credits: Created by Jonathan Brogdon
*
* Terms of use: This software is provided for use under the terms
* and conditions of the GNU General Public License.
* You should have received a copy of the GNU General
* Public License along with this program; if not, write
* to the Free Software Foundation, Inc., 59 Temple Place
* Suite 330, Boston, MA 02111-1307, USA.
*
* Global Data: None.
* Global Functions:
* gdb_serial_init
* gdb_target_init
* gdb_target_close
* putDebugChar
* getDebugChar
*
* History
* Engineer: Date: Notes:
* --------- ----- ------
* Jonathan Brogdon 20000617 Genesis
* Gordon Schumacher 20020212 Updated for modularity
*
***********************************************************************/
#ifdef DJGPP
#include <bios.h>
#endif
#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <winsock.h>
#include <errno.h>
#define DEBUGBUFFERSIZE 1024
HANDLE ser_port = (HANDLE)(-1);
//#include "utility/utility.h"
#ifdef _MSC_VER
#ifndef DEBUG_SERIAL
#pragma comment(lib, "wsock32")
#endif
#endif
#endif
#include <stdlib.h>
#include <i386-stub.h>
#ifdef DJGPP
//#include "bios_layer.h" // Include this for BIOS calls - NOT RECOMMENDED!
//#include "sva_layer.h" // Include this for SVAsync usage
#include "dzc_layer.h" // Include this for DZComm usage
#endif
#define SER_TIMEOUT 1000000
#ifdef _WIN32
static LPTOP_LEVEL_EXCEPTION_FILTER s_prev_exc_handler = 0;
#define I386_EXCEPTION_CNT 17
LONG WINAPI exc_protection_handler(EXCEPTION_POINTERS* exc_info)
{
int exc_nr = exc_info->ExceptionRecord->ExceptionCode & 0xFFFF;
if (exc_nr < I386_EXCEPTION_CNT) {
//LOG(FmtString(TEXT("exc_protection_handler: Exception %x"), exc_nr));
#if 0
if (exc_nr==11 || exc_nr==13 || exc_nr==14) {
if (mem_fault_routine)
mem_fault_routine();
}
#endif
++exc_info->ContextRecord->Eip;
}
return EXCEPTION_CONTINUE_EXECUTION;
}
LONG WINAPI exc_handler(EXCEPTION_POINTERS* exc_info)
{
int exc_nr = exc_info->ExceptionRecord->ExceptionCode & 0xFFFF;
if (exc_nr < I386_EXCEPTION_CNT) {
//LOG(FmtString("Exception %x", exc_nr));
//LOG(FmtString("EIP=%08X EFLAGS=%08X", exc_info->ContextRecord->Eip, exc_info->ContextRecord->EFlags));
// step over initial breakpoint
if (s_initial_breakpoint) {
s_initial_breakpoint = 0;
++exc_info->ContextRecord->Eip;
}
SetUnhandledExceptionFilter(exc_protection_handler);
win32_exception_handler(exc_info);
//LOG(FmtString("EIP=%08X EFLAGS=%08X", exc_info->ContextRecord->Eip, exc_info->ContextRecord->EFlags));
SetUnhandledExceptionFilter(exc_handler);
return EXCEPTION_CONTINUE_EXECUTION;
}
return EXCEPTION_CONTINUE_SEARCH;
}
void disable_debugging()
{
if (s_prev_exc_handler) {
SetUnhandledExceptionFilter(s_prev_exc_handler);
s_prev_exc_handler = 0;
}
}
#endif
#if !(defined(DJGPP) || defined(_WIN32))
void exceptionHandler(int exc_nr, void* exc_addr)
{
if (exc_nr>=0 && exc_nr<I386_EXCEPTION_CNT)
exc_handlers[exc_nr] = exc_addr;
}
#endif
/***********************************************************************
* gdb_serial_init
*
* Description: Initializes the serial port for remote debugging.
*
* Inputs:
* port - the PC COM port to use.
* speed - the COM port speed.
* Outputs: None.
* Returns: 0 for success
*
***********************************************************************/
int gdb_serial_init(unsigned int port, unsigned int speed)
{
#ifdef DJGPP
int ret;
ret = GDBStub_SerInit(port);
if (ret == 0)
ret = GDBStub_SerSpeed(speed);
return ret;
#elif defined(_WIN32)
DCB dcb ;
port = 0; //TODO
s_prev_exc_handler = SetUnhandledExceptionFilter(exc_handler);
ser_port = CreateFile( "COM1", GENERIC_READ | GENERIC_WRITE,
0, // exclusive access
NULL, // no security attrs
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL );
if( ser_port == (HANDLE)(-1) )
{
return 0;
}
// buffers
SetupComm( ser_port, DEBUGBUFFERSIZE, DEBUGBUFFERSIZE ) ;
// purge buffers
PurgeComm( ser_port, PURGE_TXABORT | PURGE_RXABORT |
PURGE_TXCLEAR | PURGE_RXCLEAR ) ;
// setup port to 9600 8N1
dcb.DCBlength = sizeof( DCB ) ;
GetCommState( ser_port, &dcb ) ;
dcb.BaudRate = speed;
dcb.ByteSize = 8;
dcb.Parity = NOPARITY ;
dcb.StopBits = ONESTOPBIT ;
dcb.fDtrControl = DTR_CONTROL_ENABLE ;
dcb.fRtsControl = RTS_CONTROL_ENABLE ;
dcb.fBinary = TRUE ;
dcb.fParity = FALSE ;
SetCommState( ser_port, &dcb ) ;
return 1;
#endif
}
/***********************************************************************
* gdb_target_init
*
* Description: This function inializes the GDB target.
*
* Inputs: None.
* Outputs: None.
* Returns: None.
*
***********************************************************************/
void gdb_target_init(void)
{
set_debug_traps();
atexit(restore_traps);
}
/***********************************************************************
* gdb_target_close
*
* Description: This function closes the GDB target.
*
* Inputs: None.
* Outputs: None.
* Returns: None.
*
***********************************************************************/
void gdb_target_close(void)
{
restore_traps();
}
/***********************************************************************
* putDebugChar
*
* Description: sends a character to the debug COM port.
*
* Inputs:
* c - the data character to be sent
* Outputs: None.
* Returns: 0 for success
*
***********************************************************************/
int putDebugChar(char c)
{
register int timeout = 0;
#ifdef DJGPP
while ((GDBStub_SerSendOk() == 0) && (timeout < SER_TIMEOUT))
timeout++;
return GDBStub_SerSend(c);
#elif defined(_WIN32)
DWORD buffer[DEBUGBUFFERSIZE];
COMSTAT ComStat ;
DWORD dwErrorFlags;
DWORD dwLength;
if(ser_port == (HANDLE)-1)
return 0;
buffer[0] = c;
retrywrite:
ClearCommError( ser_port, &dwErrorFlags, &ComStat ) ;
dwLength = ComStat.cbOutQue;
if (dwLength < DEBUGBUFFERSIZE || timeout > SER_TIMEOUT)
{
if(WriteFile( ser_port, buffer, 1, &dwLength, NULL ))
return 1;
else if(timeout > SER_TIMEOUT)
return 0;
}
else timeout++;
goto retrywrite;
#endif
}
/***********************************************************************
* getDebugChar
*
* Description: gets a character from the debug COM port.
*
* Inputs: None.
* Outputs: None.
* Returns: character data from the serial support.
*
***********************************************************************/
int getDebugChar(void)
{
register int timeout = 0;
#ifdef DJGPP
register int ret = -1;
while ((GDBStub_SerRecvOk() == 0) && (timeout < SER_TIMEOUT))
timeout++;
if (timeout < SER_TIMEOUT)
ret = GDBStub_SerRecv();
return ret;
#elif defined(_WIN32)
DWORD buffer[DEBUGBUFFERSIZE];
COMSTAT ComStat ;
DWORD dwErrorFlags;
DWORD dwLength;
if(ser_port == (HANDLE)-1)
return -1;
retryread:
ClearCommError( ser_port, &dwErrorFlags, &ComStat ) ;
dwLength = min( DEBUGBUFFERSIZE, ComStat.cbInQue ) ;
if (dwLength > 0 || timeout > SER_TIMEOUT)
{
if(ReadFile( ser_port, buffer, 1, &dwLength, NULL ))
return buffer[0];
else if(timeout > SER_TIMEOUT)
return -1;
}
else timeout++;
goto retryread;
#endif
}
#if 0
static SOCKET s_rem_fd = INVALID_SOCKET;
int init_gdb_connect()
{
#ifdef _WIN32
WORD wVersionRequested;
WSADATA wsa_data;
#endif
SOCKADDR_IN srv_addr;
SOCKADDR_IN rem_addr;
SOCKET srv_socket;
int rem_len;
memset(&srv_addr,0,sizeof(srv_addr));
s_prev_exc_handler = SetUnhandledExceptionFilter(exc_handler);
#ifdef _WIN32
wVersionRequested= MAKEWORD( 2, 2 );
if (WSAStartup(wVersionRequested, &wsa_data)) {
fprintf(stderr, "WSAStartup() failed");
return 0;
}
#endif
srv_addr.sin_family = AF_INET;
srv_addr.sin_addr.s_addr = htonl(INADDR_ANY);
srv_addr.sin_port = htons(9999);
srv_socket = socket(PF_INET, SOCK_STREAM, 0);
if (srv_socket == INVALID_SOCKET) {
perror("socket()");
return 0;
}
if (bind(srv_socket, (struct sockaddr*) &srv_addr, sizeof(srv_addr)) == -1) {
perror("bind()");
return 0;
}
if (listen(srv_socket, 4) == -1) {
perror("listen()");
return 0;
}
rem_len = sizeof(rem_addr);
for(;;) {
s_rem_fd = accept(srv_socket, (struct sockaddr*)&rem_addr, &rem_len);
if (s_rem_fd == INVALID_SOCKET) {
if (errno == EINTR)
continue;
perror("accept()");
return 0;
}
break;
}
return 1;
}
int getDebugChar()
{
char buffer[DEBUGBUFFERSIZE];
int r;
if (s_rem_fd == INVALID_SOCKET)
return EOF;
r = recv(s_rem_fd, buffer, 1, 0);
if (r == -1) {
perror("recv()");
//LOG(TEXT("debugger connection broken"));
s_rem_fd = INVALID_SOCKET;
return EOF;
}
if (!r)
return EOF;
return buffer[0];
}
void putDebugChar(int c)
{
if (s_rem_fd == INVALID_SOCKET) {
const char buffer[] = {c};
if (!send(s_rem_fd, buffer, 1, 0)) {
perror("send()");
//LOG(TEXT("debugger connection broken"));
exit(-1);
}
}
}
#endif

View file

@ -1,30 +0,0 @@
#
# Makefile for GDB Stub for DJGPP
#
# GDB Stub for DJGPP Copyright 2000 by Jonathan Brogdon
#
include ../../Makefile.cfg
CFLAGS += -I../../include -I../include
LOBJS = i386-stub.o i386-supp.o
all: library
library: $(LOBJS)
@$(RM) ../../lib/libgdbst.a
@$(AR) rcs ../../lib/libgdbst.a $(LOBJS)
dep:
@$(CC) $(CFLAGS) -M *.c > depend.dep
clean:
@$(RM) $(LOBJS)
distclean: clean
@$(RM) ../../lib/libgdbst.a
@$(RM) depend.dep
$(OBJS) $(LOBJS):
include depend.dep

View file

@ -1,83 +0,0 @@
//=======================================================================================================
// sva_layer.h - Serial command layer for SVAsync
//
//=======================================================================================================
//=======================================================================================================
//=======================================================================================================
#ifndef _SVA_LAYER_H
#define _SVA_LAYER_H
//===============================================================================
// Include files
//===============================================================================
#include "svasync.h"
//===============================================================================
// Inline function definitions
//===============================================================================
// Initialize the serial library
// Should return 0 if no error occurred
__inline int GDBStub_SerInit(int port)
{
int ret, init;
ret = init = SVAsyncInit(port - 1);
if (ret == 0)
ret = SVAsyncFifoInit();
if (init == 0)
atexit(SVAsyncStop);
return ret;
}
// Set the serial port speed (and other configurables)
// Should return 0 if the speed is set properly
__inline int GDBStub_SerSpeed(int speed)
{
SVAsyncSet(speed, BITS_8 | NO_PARITY | STOP_1);
SVAsyncHand(DTR | RTS);
return 0;
}
// Check to see if there's room in the buffer to send data
// Should return 0 if it is okay to send
__inline int GDBStub_SerSendOk(void)
{
return !SVAsyncOutStat();
}
// Send a character to the serial port
// Should return 0 if the send succeeds
__inline int GDBStub_SerSend(int c)
{
SVAsyncOut((char) c);
return 0;
}
// Check to see if there are characters waiting in the buffer
// Should return 0 if there's data waiting
__inline int GDBStub_SerRecvOk(void)
{
return SVAsyncInStat();
}
// Read a character from the serial port
// Should return the character read
__inline int GDBStub_SerRecv(void)
{
return SVAsyncIn();
}
#endif