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rednaxelafx/.hotspot_compiler

Created March 6, 2012 13:18
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Example (XS) of adding an intrinsic method to HotSpot C2. Patch against HS20-b12
Raw
.hotspot_compiler
exclude Main main
dontinline Main doTest
compileonly Main doTest
compileonly FxIntrinsics *
Raw
.hotspotrc
+PrintAssembly
+PrintCompilation
+PrintInlining
CompileThreshold=10
+DisplayVMOutputToStderr
Raw
7024866.patch
diff -r 20dbc199874e src/share/vm/code/nmethod.cpp
--- a/src/share/vm/code/nmethod.cpp Mon Jan 09 18:02:05 2012 -0800
+++ b/src/share/vm/code/nmethod.cpp Tue Mar 06 21:02:09 2012 +0800
@@ -1873,7 +1873,7 @@
oop nmethod::embeddedOop_at(u_char* p) {
- RelocIterator iter(this, p, p + oopSize);
+ RelocIterator iter(this, p, p + 1);
while (iter.next())
if (iter.type() == relocInfo::oop_type) {
return iter.oop_reloc()->oop_value();
Raw
command_prompt
[sajia@211 fxtest]$ java -version
VM option '+PrintAssembly'
VM option '+PrintCompilation'
VM option '+PrintInlining'
VM option 'CompileThreshold=10'
OpenJDK 64-Bit Server VM warning: PrintAssembly is enabled; turning on DebugNonSafepoints to gain additional output
CompilerOracle: exclude Main.main
CompilerOracle: dontinline Main.doTest
CompilerOracle: compileonly Main.doTest
CompilerOracle: compileonly FxIntrinsics.*
java version "1.6.0_30"
Java(TM) SE Runtime Environment (build 1.6.0_30-b12)
OpenJDK 64-Bit Server VM (build 20.0-b12-internal-fastdebug, mixed mode)
[sajia@211 fxtest]$ java -Xbootclasspath/p:. Main
VM option '+PrintAssembly'
VM option '+PrintCompilation'
VM option '+PrintInlining'
VM option 'CompileThreshold=10'
OpenJDK 64-Bit Server VM warning: PrintAssembly is enabled; turning on DebugNonSafepoints to gain additional output
CompilerOracle: exclude Main.main
CompilerOracle: dontinline Main.doTest
CompilerOracle: compileonly Main.doTest
CompilerOracle: compileonly FxIntrinsics.*
FxIntrinsics.add(): normal Java version called.
10
FxIntrinsics.add(): normal Java version called.
11
FxIntrinsics.add(): normal Java version called.
12
FxIntrinsics.add(): normal Java version called.
13
FxIntrinsics.add(): normal Java version called.
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FxIntrinsics.add(): normal Java version called.
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FxIntrinsics.add(): normal Java version called.
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FxIntrinsics.add(): normal Java version called.
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FxIntrinsics.add(): normal Java version called.
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2285 1 Main::doTest (6 bytes)
FxIntrinsics.add(): normal Java version called. 2286 2 FxIntrinsics::add (12 bytes)
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Loaded disassembler from /home/sajia/testjdk6u30/jre/lib/amd64/server/libhsdis-amd64.so
Loaded disassembler from /home/sajia/testjdk6u30/jre/lib/amd64/server/libhsdis-amd64.so
Inlining intrinsic _add_fx at bci:2 in Main::doTest (6 bytes)
@ 5 java.io.PrintStream::println failed_initial_checks
Decoding compiled method 0x00002aaaab122e50:
Code:
[Disassembling for mach='i386:x86-64']
[Entry Point]
[Verified Entry Point]
[Constants]
# {method} 'doTest' '(II)I' in 'Main'
# parm0: rsi = int
# parm1: rdx = int
# [sp+0x20] (sp of caller)
0x00002aaaab122fa0: push %rbp
0x00002aaaab122fa1: sub $0x10,%rsp
0x00002aaaab122fa5: nop ;*synchronization entry
; - Main::doTest@-1 (line 3)
0x00002aaaab122fa6: mov %esi,%eax
0x00002aaaab122fa8: add %edx,%eax ;*invokestatic add
; - Main::doTest@2 (line 3)
0x00002aaaab122faa: add $0x10,%rsp
0x00002aaaab122fae: pop %rbp
0x00002aaaab122faf: test %eax,-0x425fb5(%rip) # 0x00002aaaaacfd000
; {poll_return}
0x00002aaaab122fb5: retq
0x00002aaaab122fb6: hlt
0x00002aaaab122fb7: hlt
0x00002aaaab122fb8: hlt
0x00002aaaab122fb9: hlt
0x00002aaaab122fba: hlt
0x00002aaaab122fbb: hlt
0x00002aaaab122fbc: hlt
0x00002aaaab122fbd: hlt
0x00002aaaab122fbe: hlt
0x00002aaaab122fbf: hlt
[Exception Handler]
[Stub Code]
0x00002aaaab122fc0: jmpq 0x00002aaaab10b960 ; {no_reloc}
[Deopt Handler Code]
0x00002aaaab122fc5: callq 0x00002aaaab122fca
0x00002aaaab122fca: subq $0x5,(%rsp)
0x00002aaaab122fcf: jmpq 0x00002aaaab0fd7e0 ; {runtime_call}
0x00002aaaab122fd4: int3
0x00002aaaab122fd5: int3
0x00002aaaab122fd6: int3
0x00002aaaab122fd7: int3
Decoding compiled method 0x00002aaaab122b10:
Code:
[Disassembling for mach='i386:x86-64']
[Entry Point]
[Verified Entry Point]
[Constants]
# {method} 'add' '(II)I' in 'FxIntrinsics'
# parm0: rsi = int
# parm1: rdx = int
# [sp+0x30] (sp of caller)
0x00002aaaab122c60: mov %eax,-0x8000(%rsp)
0x00002aaaab122c67: push %rbp
0x00002aaaab122c68: sub $0x20,%rsp ;*synchronization entry
; - FxIntrinsics::add@-1 (line 3)
0x00002aaaab122c6c: mov %edx,(%rsp)
0x00002aaaab122c6f: mov %esi,%ebp
0x00002aaaab122c71: mov $0x60402f038,%r10 ; {oop('java/lang/System')}
0x00002aaaab122c7b: mov 0x25c(%r10),%r11d ;*getstatic out
; - FxIntrinsics::add@0 (line 3)
0x00002aaaab122c82: test %r11d,%r11d
0x00002aaaab122c85: je 0x00002aaaab122cad ;*invokevirtual println
; - FxIntrinsics::add@5 (line 3)
0x00002aaaab122c87: lea (%r12,%r11,8),%rsi ;*getstatic out
; - FxIntrinsics::add@0 (line 3)
0x00002aaaab122c8b: mov $0x604253ef8,%rdx ; {oop("FxIntrinsics.add(): normal Java version called.")}
0x00002aaaab122c95: nop
0x00002aaaab122c96: nop
0x00002aaaab122c97: callq 0x00002aaaab0fc820 ; OopMap{off=60}
;*invokevirtual println
; - FxIntrinsics::add@5 (line 3)
; {optimized virtual_call}
0x00002aaaab122c9c: mov %ebp,%eax
0x00002aaaab122c9e: add (%rsp),%eax ;*iadd
; - FxIntrinsics::add@10 (line 4)
0x00002aaaab122ca1: add $0x20,%rsp
0x00002aaaab122ca5: pop %rbp
0x00002aaaab122ca6: test %eax,-0x425cac(%rip) # 0x00002aaaaacfd000
; {poll_return}
0x00002aaaab122cac: retq
0x00002aaaab122cad: mov $0xfffffff6,%esi
0x00002aaaab122cb2: nop
0x00002aaaab122cb3: callq 0x00002aaaab0fdca0 ; OopMap{off=88}
;*invokevirtual println
; - FxIntrinsics::add@5 (line 3)
; {runtime_call}
0x00002aaaab122cb8: mov $0x2b260130ccb0,%r10 ; {runtime_call}
0x00002aaaab122cc2: rex.WB callq *%r10 ;*invokevirtual println
; - FxIntrinsics::add@5 (line 3)
0x00002aaaab122cc5: mov %rax,%rsi
0x00002aaaab122cc8: add $0x20,%rsp
0x00002aaaab122ccc: pop %rbp
0x00002aaaab122ccd: jmpq 0x00002aaaab1214a0 ; {runtime_call}
0x00002aaaab122cd2: hlt
0x00002aaaab122cd3: hlt
0x00002aaaab122cd4: hlt
0x00002aaaab122cd5: hlt
0x00002aaaab122cd6: hlt
0x00002aaaab122cd7: hlt
0x00002aaaab122cd8: hlt
0x00002aaaab122cd9: hlt
0x00002aaaab122cda: hlt
0x00002aaaab122cdb: hlt
0x00002aaaab122cdc: hlt
0x00002aaaab122cdd: hlt
0x00002aaaab122cde: hlt
0x00002aaaab122cdf: hlt
[Stub Code]
0x00002aaaab122ce0: mov $0x0,%rbx ; {no_reloc}
0x00002aaaab122cea: jmpq 0x00002aaaab122cea ; {runtime_call}
[Exception Handler]
0x00002aaaab122cef: jmpq 0x00002aaaab10b960 ; {runtime_call}
[Deopt Handler Code]
0x00002aaaab122cf4: callq 0x00002aaaab122cf9
0x00002aaaab122cf9: subq $0x5,(%rsp)
0x00002aaaab122cfe: jmpq 0x00002aaaab0fd7e0 ; {runtime_call}
0x00002aaaab122d03: int3
0x00002aaaab122d04: int3
0x00002aaaab122d05: int3
0x00002aaaab122d06: int3
0x00002aaaab122d07: int3
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[sajia@211 fxtest]$ java -Xbootclasspath/p:. Main 2>vm.log
VM option '+PrintAssembly'
VM option '+PrintCompilation'
VM option '+PrintInlining'
VM option 'CompileThreshold=10'
VM option '+DisplayVMOutputToStderr'
FxIntrinsics.add(): normal Java version called.
10
FxIntrinsics.add(): normal Java version called.
11
FxIntrinsics.add(): normal Java version called.
12
FxIntrinsics.add(): normal Java version called.
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FxIntrinsics.add(): normal Java version called.
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FxIntrinsics.add(): normal Java version called.
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FxIntrinsics.add(): normal Java version called.
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FxIntrinsics.add(): normal Java version called.
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FxIntrinsics.add(): normal Java version called.
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FxIntrinsics.add(): normal Java version called.
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[sajia@211 fxtest]$
Raw
FxIntrinsics.java
public class FxIntrinsics {
public static int add(int x, int y) {
System.out.println("FxIntrinsics.add(): normal Java version called.");
return x + y;
}
}
Raw
Main.java
public class Main {
private static int doTest(int x, int y) {
return FxIntrinsics.add(x, y);
}
public static void main(String[] args) throws Exception {
for (int i = 0; i < 100; i++) {
System.out.println(doTest(i, 10));
Thread.sleep(200);
}
}
}
Raw
Notes.md 
  LibraryIntrinsic(ciMethod* m, bool is_virtual, vmIntrinsics::ID id)
    : InlineCallGenerator(m),
      _is_virtual(is_virtual),
      _intrinsic_id(id)
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V  [libjvm.so+0x9ab280]  print_stack_trace_on(outputStream*)+0x20
V  [libjvm.so+0x9ab5e7]  Compile::make_vm_intrinsic(ciMethod*, bool)+0x1a7
V  [libjvm.so+0x59cff6]  Compile::find_intrinsic(ciMethod*, bool)+0x156
V  [libjvm.so+0x69d08a]  Compile::call_generator(ciMethod*, int, bool, JVMState*, bool, float)+0x1ca
V  [libjvm.so+0x69e86e]  Parse::do_call()+0x34e
V  [libjvm.so+0xb514ec]  Parse::do_one_bytecode()+0x92c
V  [libjvm.so+0xb46335]  Parse::do_one_block()+0x415
V  [libjvm.so+0xb469c0]  Parse::do_all_blocks()+0x200
V  [libjvm.so+0xb48610]  Parse::Parse(JVMState*, ciMethod*, float)+0xd90
V  [libjvm.so+0x4a88f7]  ParseGenerator::generate(JVMState*)+0x147
V  [libjvm.so+0x5acf6d]  Compile::Compile(ciEnv*, C2Compiler*, ciMethod*, int, bool, bool)+0x16cd
V  [libjvm.so+0x4a694c]  C2Compiler::compile_method(ciEnv*, ciMethod*, int)+0x25c
V  [libjvm.so+0x5b29de]  CompileBroker::invoke_compiler_on_method(CompileTask*)+0x3de
V  [libjvm.so+0x5b4c98]  CompileBroker::compiler_thread_loop()+0x5a8
V  [libjvm.so+0xccfdae]  JavaThread::thread_main_inner()+0xee
V  [libjvm.so+0xb0e1e4]  java_start(Thread*)+0xf4

JVMState* LibraryIntrinsic::generate(JVMState* jvms)

Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V  [libjvm.so+0x9ab280]  print_stack_trace_on(outputStream*)+0x20
V  [libjvm.so+0x9c6e79]  LibraryIntrinsic::generate(JVMState*)+0x29
V  [libjvm.so+0x69e956]  Parse::do_call()+0x436
V  [libjvm.so+0xb514ec]  Parse::do_one_bytecode()+0x92c
V  [libjvm.so+0xb46335]  Parse::do_one_block()+0x415
V  [libjvm.so+0xb469c0]  Parse::do_all_blocks()+0x200
V  [libjvm.so+0xb48610]  Parse::Parse(JVMState*, ciMethod*, float)+0xd90
V  [libjvm.so+0x4a88f7]  ParseGenerator::generate(JVMState*)+0x147
V  [libjvm.so+0x5acf6d]  Compile::Compile(ciEnv*, C2Compiler*, ciMethod*, int, bool, bool)+0x16cd
V  [libjvm.so+0x4a694c]  C2Compiler::compile_method(ciEnv*, ciMethod*, int)+0x25c
V  [libjvm.so+0x5b29de]  CompileBroker::invoke_compiler_on_method(CompileTask*)+0x3de
V  [libjvm.so+0x5b4c98]  CompileBroker::compiler_thread_loop()+0x5a8
V  [libjvm.so+0xccfdae]  JavaThread::thread_main_inner()+0xee
V  [libjvm.so+0xb0e1e4]  java_start(Thread*)+0xf4

private static int doTest(int, int);
  Code:
   Stack=2, Locals=2, Args_size=2
   0:   iload_0
   1:   iload_1
   2:   invokestatic    #2; //Method FxIntrinsics.add:(II)I
   5:   ireturn
  LineNumberTable: 
   line 3: 0
Raw
simple_intrinsic_method.patch
diff -r 20dbc199874e src/share/vm/classfile/vmSymbols.hpp
--- a/src/share/vm/classfile/vmSymbols.hpp Mon Jan 09 18:02:05 2012 -0800
+++ b/src/share/vm/classfile/vmSymbols.hpp Tue Mar 06 21:02:09 2012 +0800
@@ -568,6 +568,10 @@
do_name(log_name,"log") do_name(log10_name,"log10") do_name(pow_name,"pow") \
do_name(exp_name,"exp") do_name(min_name,"min") do_name(max_name,"max") \
\
+ /* FX experimental intrinsics */ \
+ do_class(test_FxIntrinsics, "FxIntrinsics") \
+ do_intrinsic(_add_fx, test_FxIntrinsics, add_method_name, int2_int_signature, F_S) \
+ \
do_intrinsic(_dabs, java_lang_Math, abs_name, double_double_signature, F_S) \
do_intrinsic(_dsin, java_lang_Math, sin_name, double_double_signature, F_S) \
do_intrinsic(_dcos, java_lang_Math, cos_name, double_double_signature, F_S) \
diff -r 20dbc199874e src/share/vm/opto/library_call.cpp
--- a/src/share/vm/opto/library_call.cpp Mon Jan 09 18:02:05 2012 -0800
+++ b/src/share/vm/opto/library_call.cpp Tue Mar 06 21:02:09 2012 +0800
@@ -146,6 +146,7 @@
return generate_method_call(method_id, true, false);
}
+ bool inline_add_fx();
Node* make_string_method_node(int opcode, Node* str1, Node* cnt1, Node* str2, Node* cnt2);
bool inline_string_compareTo();
bool inline_string_indexOf();
@@ -429,6 +430,8 @@
case vmIntrinsics::_getClass:
return inline_native_getClass();
+ case vmIntrinsics::_add_fx:
+ return inline_add_fx();
case vmIntrinsics::_dsin:
case vmIntrinsics::_dcos:
case vmIntrinsics::_dtan:
@@ -812,6 +815,22 @@
}
+//-------------------------------inline_add_fx----------------------------
+bool LibraryCallKit::inline_add_fx() {
+ if (/*!Matcher::has_match_rule(Op_AddFx) || */!UseSSE42Intrinsics) {
+ return false;
+ }
+
+ // make the graph here!
+ int nargs = 2; // 2 ints
+ assert(callee()->signature()->size() == nargs, "add_fx has 2 arguments");
+ Node* x = argument(0); // don't use pop() here, it's for the operand stack, whereas we're taking values from the local variable area now
+ Node* y = argument(1);
+ Node* result = AddI(x, y); // GraphKit::AddI() did a _gvn.transform() already
+ push(result);
+ return true;
+}
+
//------------------------------make_string_method_node------------------------
// Helper method for String intrinsic finctions.
Node* LibraryCallKit::make_string_method_node(int opcode, Node* str1, Node* cnt1, Node* str2, Node* cnt2) {
Raw
vm.log
OpenJDK 64-Bit Server VM warning: PrintAssembly is enabled; turning on DebugNonSafepoints to gain additional output
CompilerOracle: exclude Main.main
CompilerOracle: dontinline Main.doTest
CompilerOracle: compileonly Main.doTest
CompilerOracle: compileonly FxIntrinsics.*
2284 1 Main::doTest (6 bytes)
2284 2 FxIntrinsics::add (12 bytes)
Loaded disassembler from /home/sajia/testjdk6u30/jre/lib/amd64/server/libhsdis-amd64.so
Loaded disassembler from /home/sajia/testjdk6u30/jre/lib/amd64/server/libhsdis-amd64.so
Inlining intrinsic _add_fx at bci:2 in Main::doTest (6 bytes)
@ 5 java.io.PrintStream::println failed_initial_checks
Decoding compiled method 0x00002aaaab122e50:
Code:
[Disassembling for mach='i386:x86-64']
[Entry Point]
[Verified Entry Point]
[Constants]
# {method} 'doTest' '(II)I' in 'Main'
# parm0: rsi = int
# parm1: rdx = int
# [sp+0x20] (sp of caller)
0x00002aaaab122fa0: push %rbp
0x00002aaaab122fa1: sub $0x10,%rsp
0x00002aaaab122fa5: nop ;*synchronization entry
; - Main::doTest@-1 (line 3)
0x00002aaaab122fa6: mov %esi,%eax
0x00002aaaab122fa8: add %edx,%eax ;*invokestatic add
; - Main::doTest@2 (line 3)
0x00002aaaab122faa: add $0x10,%rsp
0x00002aaaab122fae: pop %rbp
0x00002aaaab122faf: test %eax,-0x425fb5(%rip) # 0x00002aaaaacfd000
; {poll_return}
0x00002aaaab122fb5: retq
0x00002aaaab122fb6: hlt
0x00002aaaab122fb7: hlt
0x00002aaaab122fb8: hlt
0x00002aaaab122fb9: hlt
0x00002aaaab122fba: hlt
0x00002aaaab122fbb: hlt
0x00002aaaab122fbc: hlt
0x00002aaaab122fbd: hlt
0x00002aaaab122fbe: hlt
0x00002aaaab122fbf: hlt
[Exception Handler]
[Stub Code]
0x00002aaaab122fc0: jmpq 0x00002aaaab10b960 ; {no_reloc}
[Deopt Handler Code]
0x00002aaaab122fc5: callq 0x00002aaaab122fca
0x00002aaaab122fca: subq $0x5,(%rsp)
0x00002aaaab122fcf: jmpq 0x00002aaaab0fd7e0 ; {runtime_call}
0x00002aaaab122fd4: int3
0x00002aaaab122fd5: int3
0x00002aaaab122fd6: int3
0x00002aaaab122fd7: int3
Decoding compiled method 0x00002aaaab122b10:
Code:
[Disassembling for mach='i386:x86-64']
[Entry Point]
[Verified Entry Point]
[Constants]
# {method} 'add' '(II)I' in 'FxIntrinsics'
# parm0: rsi = int
# parm1: rdx = int
# [sp+0x30] (sp of caller)
0x00002aaaab122c60: mov %eax,-0x8000(%rsp)
0x00002aaaab122c67: push %rbp
0x00002aaaab122c68: sub $0x20,%rsp ;*synchronization entry
; - FxIntrinsics::add@-1 (line 3)
0x00002aaaab122c6c: mov %edx,(%rsp)
0x00002aaaab122c6f: mov %esi,%ebp
0x00002aaaab122c71: mov $0x60402f038,%r10 ; {oop('java/lang/System')}
0x00002aaaab122c7b: mov 0x25c(%r10),%r11d ;*getstatic out
; - FxIntrinsics::add@0 (line 3)
0x00002aaaab122c82: test %r11d,%r11d
0x00002aaaab122c85: je 0x00002aaaab122cad ;*invokevirtual println
; - FxIntrinsics::add@5 (line 3)
0x00002aaaab122c87: lea (%r12,%r11,8),%rsi ;*getstatic out
; - FxIntrinsics::add@0 (line 3)
0x00002aaaab122c8b: mov $0x604253ef8,%rdx ; {oop("FxIntrinsics.add(): normal Java version called.")}
0x00002aaaab122c95: nop
0x00002aaaab122c96: nop
0x00002aaaab122c97: callq 0x00002aaaab0fc820 ; OopMap{off=60}
;*invokevirtual println
; - FxIntrinsics::add@5 (line 3)
; {optimized virtual_call}
0x00002aaaab122c9c: mov %ebp,%eax
0x00002aaaab122c9e: add (%rsp),%eax ;*iadd
; - FxIntrinsics::add@10 (line 4)
0x00002aaaab122ca1: add $0x20,%rsp
0x00002aaaab122ca5: pop %rbp
0x00002aaaab122ca6: test %eax,-0x425cac(%rip) # 0x00002aaaaacfd000
; {poll_return}
0x00002aaaab122cac: retq
0x00002aaaab122cad: mov $0xfffffff6,%esi
0x00002aaaab122cb2: nop
0x00002aaaab122cb3: callq 0x00002aaaab0fdca0 ; OopMap{off=88}
;*invokevirtual println
; - FxIntrinsics::add@5 (line 3)
; {runtime_call}
0x00002aaaab122cb8: mov $0x2b7cc2817cb0,%r10 ; {runtime_call}
0x00002aaaab122cc2: rex.WB callq *%r10 ;*invokevirtual println
; - FxIntrinsics::add@5 (line 3)
0x00002aaaab122cc5: mov %rax,%rsi
0x00002aaaab122cc8: add $0x20,%rsp
0x00002aaaab122ccc: pop %rbp
0x00002aaaab122ccd: jmpq 0x00002aaaab1214a0 ; {runtime_call}
0x00002aaaab122cd2: hlt
0x00002aaaab122cd3: hlt
0x00002aaaab122cd4: hlt
0x00002aaaab122cd5: hlt
0x00002aaaab122cd6: hlt
0x00002aaaab122cd7: hlt
0x00002aaaab122cd8: hlt
0x00002aaaab122cd9: hlt
0x00002aaaab122cda: hlt
0x00002aaaab122cdb: hlt
0x00002aaaab122cdc: hlt
0x00002aaaab122cdd: hlt
0x00002aaaab122cde: hlt
0x00002aaaab122cdf: hlt
[Stub Code]
0x00002aaaab122ce0: mov $0x0,%rbx ; {no_reloc}
0x00002aaaab122cea: jmpq 0x00002aaaab122cea ; {runtime_call}
[Exception Handler]
0x00002aaaab122cef: jmpq 0x00002aaaab10b960 ; {runtime_call}
[Deopt Handler Code]
0x00002aaaab122cf4: callq 0x00002aaaab122cf9
0x00002aaaab122cf9: subq $0x5,(%rsp)
0x00002aaaab122cfe: jmpq 0x00002aaaab0fd7e0 ; {runtime_call}
0x00002aaaab122d03: int3
0x00002aaaab122d04: int3
0x00002aaaab122d05: int3
0x00002aaaab122d06: int3
0x00002aaaab122d07: int3
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