| Copyright (c) 2008 Sun Microsystems, Inc. All Rights Reserved. |
| DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| |
| This code is free software; you can redistribute it and/or modify it |
| under the terms of the GNU General Public License version 2 only, as |
| published by the Free Software Foundation. |
| |
| This code 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. See the GNU General Public License |
| version 2 for more details (a copy is included in the LICENSE file that |
| accompanied this code). |
| |
| You should have received a copy of the GNU General Public License version |
| 2 along with this work; if not, write to the Free Software Foundation, |
| Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| |
| Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| CA 95054 USA or visit www.sun.com if you need additional information or |
| have any questions. |
| |
| ________________________________________________________________________ |
| |
| 'hsdis': A HotSpot plugin for disassembling dynamically generated code. |
| |
| The files in this directory (Makefile, hsdis.[ch], hsdis-demo.c) |
| are built independently of the HotSpot JVM. |
| |
| To use the plugin with a JVM, you need a new version that can load it. |
| If the product mode of your JVM does not accept -XX:+PrintAssembly, |
| you do not have a version that is new enough. |
| |
| * Building |
| |
| To build this project you need a build of Gnu binutils to link against. |
| It is known to work with binutils 2.17. |
| |
| The makefile looks for this build in $BINUTILS, or (if that is not set), |
| in .../binutils-2.17-$LIBARCH, where LIBARCH (as in HotSpot) is one of |
| the jre subdirectory keywords i386, amd64, sparc, sparcv9, etc. |
| |
| To build Gnu binutils, first download a copy of the software: |
| http://directory.fsf.org/project/binutils/ |
| |
| Unpack the binutils tarball into an empty directory: |
| chdir ../../../../.. |
| tar -xzf - < ../binutils-2.17.tar.gz |
| mv binutils-2.17 binutils-2.17-i386 #or binutils-2.17-sparc |
| cd binutils-2.17-i386 |
| |
| From inside that directory, run configure and make: |
| ( export CFLAGS='-fPIC' |
| ./configure i386-pc-elf ) |
| gnumake |
| |
| (Leave out or change the argument to configure if not on an i386 system.) |
| |
| Next, untar again into another empty directory for the LP64 version: |
| chdir .. |
| tar -xzf - < ../binutils-2.17.tar.gz |
| mv binutils-2.17 binutils-2.17-amd64 #or binutils-2.17-sparcv9 |
| cd binutils-2.17-amd64 |
| |
| From inside that directory, run configure for LP64 and make: |
| ( export ac_cv_c_bigendian=no CFLAGS='-m64 -fPIC' LDFLAGS=-m64 |
| ./configure amd64-pc-elf ) |
| gnumake |
| |
| The -fPIC option is needed because the generated code will be |
| linked into the hsdid-$LIBARCH.so binary. If you miss the |
| option, the JVM will fail to load the disassembler. |
| |
| You probably want two builds, one for 32 and one for 64 bits. |
| To build the 64-bit variation of a platforn, add LP64=1 to |
| the make command line for hsdis. |
| |
| So, go back to the hsdis project and build: |
| chdir .../hsdis |
| gnumake |
| gnumake LP64=1 |
| |
| * Installing |
| |
| Products are named like bin/$OS/hsdis-$LIBARCH.so. |
| You can install them on your LD_LIBRARY_PATH, |
| or inside of your JRE next to $LIBARCH/libjvm.so. |
| |
| Now test: |
| export LD_LIBRARY_PATH .../hsdis/bin/solaris:$LD_LIBRARY_PATH |
| dargs='-XX:+UnlockDiagnosticVMOptions -XX:+PrintAssembly' |
| dargs=$dargs' -XX:PrintAssemblyOptions=hsdis-print-bytes' |
| java $dargs -Xbatch CompileCommand=print,*String.hashCode HelloWorld |
| |
| If the product mode of the JVM does not accept -XX:+PrintAssembly, |
| you do not have a version new enough to use the hsdis plugin. |