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1 Copyright (c) 2008 Sun Microsystems, Inc. All Rights Reserved. |
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2 DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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3 |
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4 This code is free software; you can redistribute it and/or modify it |
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5 under the terms of the GNU General Public License version 2 only, as |
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6 published by the Free Software Foundation. |
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7 |
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8 This code is distributed in the hope that it will be useful, but WITHOUT |
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9 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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10 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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11 version 2 for more details (a copy is included in the LICENSE file that |
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12 accompanied this code). |
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13 |
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14 You should have received a copy of the GNU General Public License version |
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15 2 along with this work; if not, write to the Free Software Foundation, |
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16 Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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17 |
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18 Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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19 CA 95054 USA or visit www.sun.com if you need additional information or |
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20 have any questions. |
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21 |
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22 ________________________________________________________________________ |
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23 |
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24 'hsdis': A HotSpot plugin for disassembling dynamically generated code. |
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25 |
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26 The files in this directory (Makefile, hsdis.[ch], hsdis-demo.c) |
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27 are built independently of the HotSpot JVM. |
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28 |
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29 To use the plugin with a JVM, you need a new version that can load it. |
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30 If the product mode of your JVM does not accept -XX:+PrintAssembly, |
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31 you do not have a version that is new enough. |
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32 |
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33 * Building |
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34 |
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35 To build this project you need a build of Gnu binutils to link against. |
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36 It is known to work with binutils 2.17. |
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37 |
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38 The makefile looks for this build in $BINUTILS, or (if that is not set), |
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39 in .../binutils-2.17-$LIBARCH, where LIBARCH (as in HotSpot) is one of |
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40 the jre subdirectory keywords i386, amd64, sparc, sparcv9, etc. |
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41 |
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42 To build Gnu binutils, first download a copy of the software: |
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43 http://directory.fsf.org/project/binutils/ |
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44 |
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45 Unpack the binutils tarball into an empty directory: |
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46 chdir ../../../../.. |
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47 tar -xzf - < ../binutils-2.17.tar.gz |
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48 mv binutils-2.17 binutils-2.17-i386 #or binutils-2.17-sparc |
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49 cd binutils-2.17-i386 |
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50 |
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51 From inside that directory, run configure and make: |
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52 ( export CFLAGS='-fPIC' |
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53 ./configure i386-pc-elf ) |
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54 gnumake |
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55 |
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56 (Leave out or change the argument to configure if not on an i386 system.) |
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57 |
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58 Next, untar again into another empty directory for the LP64 version: |
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59 chdir .. |
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60 tar -xzf - < ../binutils-2.17.tar.gz |
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61 mv binutils-2.17 binutils-2.17-amd64 #or binutils-2.17-sparcv9 |
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62 cd binutils-2.17-amd64 |
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63 |
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64 From inside that directory, run configure for LP64 and make: |
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65 ( export ac_cv_c_bigendian=no CFLAGS='-m64 -fPIC' LDFLAGS=-m64 |
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66 ./configure amd64-pc-elf ) |
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67 gnumake |
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68 |
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69 The -fPIC option is needed because the generated code will be |
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70 linked into the hsdid-$LIBARCH.so binary. If you miss the |
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71 option, the JVM will fail to load the disassembler. |
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72 |
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73 You probably want two builds, one for 32 and one for 64 bits. |
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74 To build the 64-bit variation of a platforn, add LP64=1 to |
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75 the make command line for hsdis. |
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76 |
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77 So, go back to the hsdis project and build: |
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78 chdir .../hsdis |
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79 gnumake |
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80 gnumake LP64=1 |
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81 |
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82 * Installing |
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83 |
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84 Products are named like bin/$OS/hsdis-$LIBARCH.so. |
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85 You can install them on your LD_LIBRARY_PATH, |
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86 or inside of your JRE next to $LIBARCH/libjvm.so. |
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87 |
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88 Now test: |
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89 export LD_LIBRARY_PATH .../hsdis/bin/solaris:$LD_LIBRARY_PATH |
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90 dargs='-XX:+UnlockDiagnosticVMOptions -XX:+PrintAssembly' |
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91 dargs=$dargs' -XX:PrintAssemblyOptions=hsdis-print-bytes' |
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92 java $dargs -Xbatch CompileCommand=print,*String.hashCode HelloWorld |
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93 |
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94 If the product mode of the JVM does not accept -XX:+PrintAssembly, |
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95 you do not have a version new enough to use the hsdis plugin. |