Hello World调试Hotspot

brew install gdb

➜  ~  gdb --version
GNU gdb (GDB) 9.1
Copyright (C) 2020 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>com.apple.security.cs.debugger</key>
    <true/>
</dict>
</plist>
</pre>

➜  Desktop  codesign --entitlements gdb-entitlement.xml -fs gdb_codesign $(which gdb)

# 在我的桌面创建一个Test.java文件
vim Test.java
public class Test{
    public static void main(String[] args){
        System.out.println("hello world !");
    }
}

/Users/chenyuan/Workspaces/Openjdk/openjdk8/build/macosx-x86_64-normal-server-release/jdk

➜  Desktop  /Users/chenyuan/Workspaces/Openjdk/openjdk8/build/macosx-x86_64-normal-server-release/jdk/bin/javac Test.java
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGILL (0x4) at pc=0x000000010267c7eb, pid=89116, tid=0x0000000000004f03
#
# JRE version: OpenJDK Runtime Environment (8.0) (build 1.8.0-internal-chenyuan_2020_05_24_03_17-b00)
# Java VM: OpenJDK 64-Bit Server VM (25.71-b00 mixed mode bsd-amd64 compressed oops)
# Problematic frame:
# V  [libjvm.dylib+0x47c7eb]  PerfDataManager::destroy()+0xab
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /Users/chenyuan/Desktop/hs_err_pid89116.log
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.java.com/bugreport/crash.jsp
#

[error occurred during error reporting , id 0x4]

[1]    89116 abort       Test.java
➜  Desktop  ll
total 112
-rw-r--r--  1 chenyuan  staff   415B May 24 21:33 Test.class
-rw-r--r--  1 chenyuan  staff   116B May 24 21:31 Test.java
-rw-r--r--  1 chenyuan  staff    46K May 24 21:33 hs_err_pid89116.log
➜  Desktop  /Users/chenyuan/Workspaces/Openjdk/openjdk8/build/macosx-x86_64-normal-server-release/jdk/bin/java Test
hello world !  ------- 牛逼的打印，无敌的HelloWorkd
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGILL (0x4) at pc=0x000000010be7c7eb, pid=89512, tid=0x0000000000002403
#
# JRE version: OpenJDK Runtime Environment (8.0) (build 1.8.0-internal-chenyuan_2020_05_24_03_17-b00)
# Java VM: OpenJDK 64-Bit Server VM (25.71-b00 mixed mode bsd-amd64 compressed oops)
# Problematic frame:
# V  [libjvm.dylib+0x47c7eb]  PerfDataManager::destroy()+0xab
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /Users/chenyuan/Desktop/hs_err_pid89512.log
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.java.com/bugreport/crash.jsp
#

[error occurred during error reporting , id 0x4]

[1]    89512 abort       Test

➜  Desktop  gdb --args /Users/chenyuan/Workspaces/Openjdk/openjdk8/build/macosx-x86_64-normal-server-release/jdk/bin/java Test
GNU gdb (GDB) 9.1
Copyright (C) 2020 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-apple-darwin19.3.0".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /Users/chenyuan/Workspaces/Openjdk/openjdk8/build/macosx-x86_64-normal-server-release/jdk/bin/java...
(gdb) break init.cpp:95
No source file named init.cpp.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (init.cpp:95) pending.
(gdb) run
Starting program: /Users/chenyuan/Workspaces/Openjdk/openjdk8/build/macosx-x86_64-normal-server-release/jdk/bin/java Test
[New Thread 0x1803 of process 22052]
[New Thread 0x2503 of process 22052]
[New Thread 0x2403 of process 22052]
warning: unhandled dyld version (16)
[New Thread 0x180f of process 22052]
[New Thread 0x2303 of process 22052]

Thread 4 received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x180f of process 22052]
0x00000001040002b4 in ?? ()
(gdb) l
111     // add one more to mark the end
112     margv = (char **)JLI_MemAlloc((margc + 1) * (sizeof(char *)));
113     {
114         int i = 0;
115         StdArg *stdargs = JLI_GetStdArgs();
116         for (i = 0 ; i < margc ; i++) {
117             margv[i] = stdargs[i].arg;
118         }
119         margv[i] = NULL;
120     }
(gdb) quit
A debugging session is active.

 Inferior 1 [process 22052] will be killed.

Quit anyway? (y or n) y

include_directories(./src/share/vm)
include_directories(./src/cpu/x86/vm)
include_directories(./src/share/vm/precompiled)
include_directories(./src/share/vm/utilities)

# include <cstdlib>
# include <cstdint>
# include "register_x86.hpp"
# include "assembler_x86.hpp"
# include "globalDefinitions.hpp"
# include "globalDefinitions_x86.hpp"
# include "assembler_x86.hpp"
# include <stubRoutines_x86.hpp>