Java 交叉编译OpenJDK jdk8u102-b14，针对ARM的zeroshark

在应用补丁后，我成功地交叉编译了OpenJDK jdk8u102-b14

zeroshark

，主要是从。但是当我运行

java

时，我看到来自

sharkCompiler.cpp:347

：

assert（code！=NULL）失败：代码必须是！=空

我使用的LLVM是3.4.2，为ARM与库FFI交叉编译，为ARM启用目标

从调试消息中，这是因为

generate_native_code

for

java.lang.String:：equals

get

NULL

指针位于

code=（address）execution\u engine（）->getPointerToFunction

java.lang.String:：hashCode

和

java.lang.System:：arraycopy

没有问题

这次失败的可能根本原因是什么？为什么来自同一个包的

equals

失败时

java.lang.String:：hashCode

正常

[root@Z303XY84 ~]# /mnt/target/usr/lib/jvm/j2sdk-image/bin/java
Target Triple = arm-unknown-linux-gnu              <<< debug message
compile_method: java.lang.String::hashCode
add_function : java.lang.String::hashCode
Function Name : java.lang.String::hashCode, OK
compile_method: java.lang.String::equals
add_function : java.lang.String::equals
Function Name : java.lang.String::equals, NULL     <<<<<<<<< Here is the problem
# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc:  SuppressErrorAt=/sharkCompiler.cpp:347
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  Internal Error (/output/build/openjdk-jdk8u102-b14/hotspot/src/share/vm/shark/sharkCompiler.cpp:347), pid=4204, tid=0x4d21f470
#  assert(code != NULL) failed: code must be != NULL
#
# JRE version: OpenJDK Runtime Environment (8.0_102-b14) (build 1.8.0_102-fastdebug-8u102-b14-b14)
# Java VM: OpenJDK Shark VM (25.102-b14-fastdebug mixed mode linux-arm )
# Core dump written. Default location: /root/core or core.4204
#
# An error report file with more information is saved as:
# /root/hs_err_pid4204.log
generate_native_wrapper: java.lang.System::arraycopy
add_function : java.lang.System::arraycopy
Function Name : java.lang.System::arraycopy, OK
Usage: java [-options] class [args...]
           (to execute a class)
   or  java [-options] -jar jarfile [args...]
           (to execute a jar file)
where options include:
    -d32          use a 32-bit data model if available
    -d64          use a 64-bit data model if available
    -server       to select the "server" VM
                  The default VM is server.

    -cp <class search path of directories and zip/jar files>
    -classpath <class search path of directories and zip/jar files>
                  A : separated list of directories, JAR archives,
                  and ZIP archives to search for class files.
    -D<name>=<value>
                  set a system property
    -verbose:[class|gc|jni]
                  enable verbose output
    -version      print product version and exit
    -version:<value>
                  Warning: this feature is deprecated and will be removed
                  in a future release.
                  require the specified version to run
    -showversion  print product version and continue
    -jre-restrict-search | -no-jre-restrict-search
                  Warning: this feature is deprecated and will be removed
                  in a future release.
                  include/exclude user private JREs in the version search
    -? -help      print this help message
    -X            print help on non-standard options
    -ea[:<packagename>...|:<classname>]
    -enableassertions[:<packagename>...|:<classname>]
                  enable assertions with specified granularity
    -da[:<packagename>...|:<classname>]
    -disableassertions[:<packagename>...|:<classname>]
                  disable assertions with specified granularity
    -esa | -enablesystemassertions
                  enable system assertions
    -dsa | -disablesystemassertions
                  disable system assertions
    -agentlib:<libname>[=<options>]
                  load native agent library <libname>, e.g. -agentlib:hprof
                  see also, -agentlib:jdwp=help and -agentlib:hprof=help
    -agentpath:<pathname>[=<options>]
                  load native agent library by full pathname
    -javaagent:<jarpath>[=<options>]
                  load Java programming language agent, see java.lang.instrument
    -splash:<imagepath>
                  show splash screen with specified image
See http://www.oracle.com/technetwork/java/javase/documentation/index.html for more details.
# [ timer expired, abort... ]
Aborted (core dumped)

[root@Z303XY84~]#/mnt/target/usr/lib/jvm/j2sdk image/bin/java
Target Triple=arm未知linux gnu我将使用已经测试过的Oracle版本。你可以尝试一个OpenJDK论坛，但这不是一个一般的Java编程问题，所以你可能只有在幸运的情况下才能在这里得到答案；而且里面没有任何东西需要修改代码之类的东西吗？@PeterLawrey是的，Oracle build在我们的平台上运行得很好。但是我们想在我们的平台上在OpenJDK zeroshark和Oracle SE之间做一个基准测试。@GhostCat不，我不确定。我使用Debian armel build的补丁，成功构建了OpenJDK zero虚拟机，并在我们的平台上运行，没有问题，只是与Oracle版本相比速度太慢。在zero的基础上，我想构建zeroshark来对Oracle JDK进行新一轮的基准测试。我知道这已经很旧了，但我想听听更新。我已经初步计划尝试构建sharkzero，但我正在尝试为我的端口获得一个干净的、可重复的构建，它是带有musl libc的mipsel。就我个人而言，我并不认为我不需要调试和修改Shark来让它工作，特别是因为它不再被维护——这是一个遗憾，因为实现JIT编译器的工作是巨大的。另外，我认为arm有一个本地的热点jit。