320 lines
11 KiB
Plaintext
320 lines
11 KiB
Plaintext
----------------------------------------------------------------------
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Patch name: patch.example-user-plugin
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Author: Volker Ruppert
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Updated: 14 Apr 2012
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Status: Demo
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Detailed description:
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This sample code can be used as a framework for writing user plugins.
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It contains enough code for testing the existing user plugin support
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in Bochs and creates a device that installs a 32-bit r/w register at
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i/o address 0x1000.
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This example also shows how to install and handle user-defined config
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options for bochsrc, command line and the config interface. In this
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demo it is used to specify the reset value.
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For user plugin support Bochs must be configured with plugins enabled.
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Compiling with plugin support is known to work on Linux and Windows
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(Cygwin or MinGW/MSYS). Bochs supports loading of up to 16 different
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user plugins when starting up. Loading / removing plugins at runtime
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is not yet supported.
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Patch was created with:
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diff -u
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Apply patch to what version:
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svn revision 11138 (April 14, 2012)
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Instructions:
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To patch, go to main bochs directory.
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Type "patch -p0 < THIS_PATCH_FILE".
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Regenerate the configure script and compile Bochs as usual
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cd user-plugin
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make
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make install
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----------------------------------------------------------------------
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diff -urN ../bochs/configure.in ./configure.in
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--- ../bochs/configure.in 2012-04-11 18:53:04.078087998 +0200
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+++ ./configure.in 2012-04-14 16:18:03.046503743 +0200
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@@ -2787,4 +2787,4 @@
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doc/docbook/Makefile build/linux/bochs-dlx \
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bxversion.h bxversion.rc build/macosx/Info.plist \
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build/win32/nsis/Makefile build/win32/nsis/bochs.nsi \
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- host/linux/pcidev/Makefile)
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+ host/linux/pcidev/Makefile user-plugin/Makefile)
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diff -urN ../bochs/user-plugin/Makefile.in ./user-plugin/Makefile.in
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--- ../bochs/user-plugin/Makefile.in 1970-01-01 01:00:00.000000000 +0100
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+++ ./user-plugin/Makefile.in 2012-04-14 16:18:03.046503743 +0200
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@@ -0,0 +1,108 @@
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+# Copyright (C) 2009-2012 Volker Ruppert
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+#
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+# This library is free software; you can redistribute it and/or
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+# modify it under the terms of the GNU Lesser General Public
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+# License as published by the Free Software Foundation; either
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+# version 2 of the License, or (at your option) any later version.
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+#
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+# This library is distributed in the hope that it will be useful,
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+# but WITHOUT ANY WARRANTY; without even the implied warranty of
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+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+# Lesser General Public License for more details.
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+#
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+# You should have received a copy of the GNU Lesser General Public
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+# License along with this library; if not, write to the Free Software
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+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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+
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+# Makefile for the user plugin example of bochs
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+
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+
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+@SUFFIX_LINE@
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+
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+prefix = @prefix@
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+exec_prefix = @exec_prefix@
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+srcdir = @srcdir@
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+VPATH = @srcdir@
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+bindir = @bindir@
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+libdir = @libdir@
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+plugdir = @libdir@/bochs/plugins
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+datarootdir = @datarootdir@
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+mandir = @mandir@
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+man1dir = $(mandir)/man1
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+man5dir = $(mandir)/man5
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+docdir = $(datarootdir)/doc/bochs
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+sharedir = $(datarootdir)/bochs
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+top_builddir = ..
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+top_srcdir = @top_srcdir@
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+
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+SHELL = @SHELL@
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+
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+@SET_MAKE@
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+
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+CXX = @CXX@
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+CXXFLAGS = $(BX_INCDIRS) @CXXFLAGS@ @GUI_CXXFLAGS@
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+
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+LDFLAGS = @LDFLAGS@
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+LIBS = @LIBS@
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+RANLIB = @RANLIB@
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+PLUGIN_PATH=@libdir@
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+top_builddir = ..
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+LIBTOOL=@LIBTOOL@
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+WIN32_DLL_IMPORT_LIBRARY=../dllexports.a
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+
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+BX_INCDIRS = -I.. -I$(srcdir)/.. -I../iodev -I$(srcdir)/../iodev -I../@INSTRUMENT_DIR@ -I$(srcdir)/../@INSTRUMENT_DIR@
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+
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+PLUGIN_OBJS = testdev.o
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+
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+plugins: $(PLUGIN_OBJS:@PLUGIN_LIBNAME_TRANSFORMATION@)
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+
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+install: @INSTALL_PLUGINS_VAR@
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+
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+install_libtool_plugins::
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+ list=`echo *.la`; for i in $$list; do $(LIBTOOL) --mode=install install $$i $(DESTDIR)$(plugdir); done
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+ $(LIBTOOL) --finish $(DESTDIR)$(plugdir)
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+
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+install_dll_plugins::
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+ list=`echo *.dll`; for i in $$list; do cp $$i $(DESTDIR)$(plugdir); done
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+
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+# standard compile rule for C++ files
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+.@CPP_SUFFIX@.o:
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+ $(CXX) @DASH@c $(CXXFLAGS) $(LOCAL_CXXFLAGS) @CXXFP@$< @OFP@$@
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+
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+##### building plugins with libtool
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+%.lo: %.@CPP_SUFFIX@
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+ $(LIBTOOL) --mode=compile $(CXX) -c $(CXXFLAGS) $(LOCAL_CXXFLAGS) $< -o $@
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+
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+libbx_%.la: %.lo
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+ $(LIBTOOL) --mode=link $(CXX) -module $< -o $@ -rpath $(PLUGIN_PATH)
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+
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+#### building DLLs for win32 (tested on cygwin only)
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+bx_%.dll: %.o
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+ $(CXX) $(CXXFLAGS) -shared -o $@ $< $(WIN32_DLL_IMPORT_LIBRARY)
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+
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+clean:
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+ @RMCOMMAND@ -rf .libs *.lo *.o *.la *.a *.dll
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+
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+dist-clean: clean
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+ @RMCOMMAND@ Makefile
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+
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+###########################################
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+# dependencies generated by
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+# gcc -MM -I.. -I../instrument/stubs *.cc | sed -e 's/\.cc/.@CPP_SUFFIX@/g'
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+# gcc -MM -I.. -I../instrument/stubs *.cc | \
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+# sed -e 's/\.cc/.@CPP_SUFFIX@/g' -e 's/\.o:/.lo:/g'
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+#
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+# This means that every source file is listed twice, once with a .o rule
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+# and then again with an identical .lo rule. The .lo rules are used when
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+# building plugins.
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+###########################################
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+testdev.o: testdev.@CPP_SUFFIX@ ../iodev/iodev.h ../bochs.h ../config.h ../osdep.h \
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+ ../bx_debug/debug.h ../config.h ../osdep.h ../bxversion.h \
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+ ../gui/siminterface.h ../memory/memory.h ../pc_system.h ../plugin.h \
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+ ../extplugin.h ../ltdl.h ../gui/gui.h ../gui/textconfig.h \
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+ ../gui/keymap.h ../instrument/stubs/instrument.h testdev.h
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+testdev.lo: testdev.@CPP_SUFFIX@ ../iodev/iodev.h ../bochs.h ../config.h ../osdep.h \
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+ ../bx_debug/debug.h ../config.h ../osdep.h ../bxversion.h \
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+ ../gui/siminterface.h ../memory/memory.h ../pc_system.h ../plugin.h \
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+ ../extplugin.h ../ltdl.h ../gui/gui.h ../gui/textconfig.h \
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+ ../gui/keymap.h ../instrument/stubs/instrument.h testdev.h
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diff -urN ../bochs/user-plugin/testdev.cc ./user-plugin/testdev.cc
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--- ../bochs/user-plugin/testdev.cc 1970-01-01 01:00:00.000000000 +0100
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+++ ./user-plugin/testdev.cc 2012-04-14 16:30:28.849027414 +0200
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@@ -0,0 +1,118 @@
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+// Copyright (C) 2009-2012 Volker Ruppert
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+//
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+// This library is free software; you can redistribute it and/or
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+// modify it under the terms of the GNU Lesser General Public
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+// License as published by the Free Software Foundation; either
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+// version 2 of the License, or (at your option) any later version.
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+//
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+// This library is distributed in the hope that it will be useful,
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+// but WITHOUT ANY WARRANTY; without even the implied warranty of
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+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+// Lesser General Public License for more details.
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+//
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+// You should have received a copy of the GNU Lesser General Public
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+// License along with this library; if not, write to the Free Software
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+// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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+
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+// User plugin example (see patch description for details)
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+
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+// Define BX_PLUGGABLE in files that can be compiled into plugins. For
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+// platforms that require a special tag on exported symbols, BX_PLUGGABLE
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+// is used to know when we are exporting symbols and when we are importing.
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+#define BX_PLUGGABLE
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+
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+#include "iodev.h"
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+#include "testdev.h"
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+
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+#define LOG_THIS theTestDevice->
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+
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+bx_testdev_c *theTestDevice = NULL;
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+
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+// builtin configuration handling functions
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+
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+Bit32s testdev_options_parser(const char *context, int num_params, char *params[])
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+{
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+ if (!strcmp(params[0], "testdev")) {
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+ if (!strncmp(params[1], "test=", 5)) {
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+ SIM->get_param_num("user.testdev.test")->set(atoi(¶ms[1][5]));
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+ } else {
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+ BX_PANIC(("%s: testdev: unknown parameter '%s'", context, params[1]));
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+ }
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+ } else {
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+ BX_PANIC(("%s: unknown directive '%s'", context, params[0]));
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+ }
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+ return 0;
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+}
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+
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+Bit32s testdev_options_save(FILE *fp)
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+{
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+ fprintf(fp, "testdev: test=%d\n", SIM->get_param_num("user.testdev.test")->get());
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+ return 0;
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+}
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+
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+// device plugin entry points
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+
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+int libuser_LTX_plugin_init(plugin_t *plugin, plugintype_t type, int argc, char *argv[])
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+{
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+ theTestDevice = new bx_testdev_c();
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+ BX_REGISTER_DEVICE_DEVMODEL(plugin, type, theTestDevice, "testdev");
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+ // add new configuration parameter for the config interface
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+ bx_param_c *root_param = SIM->get_param("user");
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+ bx_list_c *menu = new bx_list_c(root_param, "testdev", "Test Device");
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+ menu->set_options(bx_list_c::SHOW_PARENT);
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+ new bx_param_num_c(menu, "test", "Test Parameter", "", 0, BX_MAX_BIT32U, 0);
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+ // register user-defined option for bochsrc and command line
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+ SIM->register_addon_option("testdev", testdev_options_parser, testdev_options_save);
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+ return(0); // Success
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+}
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+
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+void libuser_LTX_plugin_fini(void)
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+{
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+ SIM->unregister_addon_option("testdev");
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+ bx_list_c *menu = (bx_list_c*)SIM->get_param("user");
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+ menu->remove("testdev");
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+ delete theTestDevice;
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+}
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+
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+// the device object
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+
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+bx_testdev_c::bx_testdev_c(void)
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+{
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+ put("USER");
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+}
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+
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+bx_testdev_c::~bx_testdev_c(void)
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+{
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+ // nothing here yet
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+}
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+
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+void bx_testdev_c::init(void)
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+{
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+ DEV_register_ioread_handler(this, read_handler, 0x1000, "Test Device", 4);
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+ DEV_register_iowrite_handler(this, write_handler, 0x1000, "Test Device", 4);
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+}
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+
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+void bx_testdev_c::reset(unsigned type)
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+{
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+ BX_USER_THIS s.reg0 = SIM->get_param_num("user.testdev.test")->get();
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+}
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+
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+void bx_testdev_c::register_state(void)
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+{
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+ bx_list_c *list = new bx_list_c(SIM->get_bochs_root(), "testdev", "Test Device");
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+ BXRS_HEX_PARAM_FIELD(list, reg0, BX_USER_THIS s.reg0);
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+}
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+
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+Bit32u bx_testdev_c::read_handler(void *this_ptr, Bit32u address, unsigned io_len)
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+{
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+ UNUSED(this_ptr);
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+
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+ return BX_USER_THIS s.reg0;
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+}
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+
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+void bx_testdev_c::write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len)
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+{
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+ UNUSED(this_ptr);
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+
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+ BX_USER_THIS s.reg0 = value;
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+}
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diff -urN ../bochs/user-plugin/testdev.h ./user-plugin/testdev.h
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--- ../bochs/user-plugin/testdev.h 1970-01-01 01:00:00.000000000 +0100
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+++ ./user-plugin/testdev.h 2012-04-14 16:19:30.538406315 +0200
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@@ -0,0 +1,40 @@
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+// Copyright (C) 2009-2012 Volker Ruppert
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+//
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+// This library is free software; you can redistribute it and/or
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+// modify it under the terms of the GNU Lesser General Public
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+// License as published by the Free Software Foundation; either
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+// version 2 of the License, or (at your option) any later version.
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+//
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+// This library is distributed in the hope that it will be useful,
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+// but WITHOUT ANY WARRANTY; without even the implied warranty of
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+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+// Lesser General Public License for more details.
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+//
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+// You should have received a copy of the GNU Lesser General Public
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+// License along with this library; if not, write to the Free Software
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+// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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+
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+#ifndef BX_TESTDEV_H
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+#define BX_TESTDEV_H
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+
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+#define BX_USER_THIS theTestDevice->
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+
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+class bx_testdev_c : public bx_devmodel_c {
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+public:
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+ bx_testdev_c();
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+ virtual ~bx_testdev_c();
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+
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+ virtual void init(void);
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+ virtual void reset(unsigned type);
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+ virtual void register_state(void);
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+
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+private:
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+ static Bit32u read_handler(void *this_ptr, Bit32u address, unsigned io_len);
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+ static void write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len);
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+
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+ struct {
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+ Bit32u reg0;
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+ } s;
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+};
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+
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+#endif
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