Bug Summary

File:jdk/src/hotspot/share/asm/register.hpp
Warning:line 70, column 7
Called C++ object pointer is null

Annotated Source Code

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clang -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name methodHandles_x86.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -mthread-model posix -fno-delete-null-pointer-checks -mframe-pointer=all -relaxed-aliasing -fmath-errno -fno-rounding-math -masm-verbose -mconstructor-aliases -munwind-tables -target-cpu x86-64 -dwarf-column-info -fno-split-dwarf-inlining -debugger-tuning=gdb -resource-dir /usr/lib/llvm-10/lib/clang/10.0.0 -I /home/daniel/Projects/java/jdk/build/linux-x86_64-server-fastdebug/hotspot/variant-server/libjvm/objs/precompiled -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -D __STDC_CONSTANT_MACROS -D _GNU_SOURCE -D _REENTRANT -D LIBC=gnu -D LINUX -D VM_LITTLE_ENDIAN -D _LP64=1 -D ASSERT -D CHECK_UNHANDLED_OOPS -D TARGET_ARCH_x86 -D INCLUDE_SUFFIX_OS=_linux -D INCLUDE_SUFFIX_CPU=_x86 -D INCLUDE_SUFFIX_COMPILER=_gcc -D TARGET_COMPILER_gcc -D AMD64 -D HOTSPOT_LIB_ARCH="amd64" -D COMPILER1 -D COMPILER2 -I /home/daniel/Projects/java/jdk/build/linux-x86_64-server-fastdebug/hotspot/variant-server/gensrc/adfiles -I /home/daniel/Projects/java/jdk/src/hotspot/share -I /home/daniel/Projects/java/jdk/src/hotspot/os/linux -I /home/daniel/Projects/java/jdk/src/hotspot/os/posix -I /home/daniel/Projects/java/jdk/src/hotspot/cpu/x86 -I /home/daniel/Projects/java/jdk/src/hotspot/os_cpu/linux_x86 -I /home/daniel/Projects/java/jdk/build/linux-x86_64-server-fastdebug/hotspot/variant-server/gensrc -I /home/daniel/Projects/java/jdk/src/hotspot/share/precompiled -I /home/daniel/Projects/java/jdk/src/hotspot/share/include -I /home/daniel/Projects/java/jdk/src/hotspot/os/posix/include -I /home/daniel/Projects/java/jdk/build/linux-x86_64-server-fastdebug/support/modules_include/java.base -I /home/daniel/Projects/java/jdk/build/linux-x86_64-server-fastdebug/support/modules_include/java.base/linux -I /home/daniel/Projects/java/jdk/src/java.base/share/native/libjimage -I /home/daniel/Projects/java/jdk/build/linux-x86_64-server-fastdebug/hotspot/variant-server/gensrc/adfiles -I /home/daniel/Projects/java/jdk/src/hotspot/share -I /home/daniel/Projects/java/jdk/src/hotspot/os/linux -I /home/daniel/Projects/java/jdk/src/hotspot/os/posix -I /home/daniel/Projects/java/jdk/src/hotspot/cpu/x86 -I /home/daniel/Projects/java/jdk/src/hotspot/os_cpu/linux_x86 -I /home/daniel/Projects/java/jdk/build/linux-x86_64-server-fastdebug/hotspot/variant-server/gensrc -D _FORTIFY_SOURCE=2 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/x86_64-linux-gnu/c++/7.5.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/x86_64-linux-gnu/c++/7.5.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.5.0/../../../../include/c++/7.5.0/backward -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-10/lib/clang/10.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O3 -Wno-format-zero-length -Wno-unused-parameter -Wno-unused -Wno-parentheses -Wno-comment -Wno-unknown-pragmas -Wno-address -Wno-delete-non-virtual-dtor -Wno-char-subscripts -Wno-array-bounds -Wno-int-in-bool-context -Wno-ignored-qualifiers -Wno-missing-field-initializers -Wno-implicit-fallthrough -Wno-empty-body -Wno-strict-overflow -Wno-sequence-point -Wno-maybe-uninitialized -Wno-misleading-indentation -Wno-cast-function-type -Wno-shift-negative-value -std=c++14 -fdeprecated-macro -fdebug-compilation-dir /home/daniel/Projects/java/jdk/make/hotspot -ferror-limit 19 -fmessage-length 0 -fvisibility hidden -stack-protector 1 -fno-rtti -fgnuc-version=4.2.1 -fobjc-runtime=gcc -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-output=html -faddrsig -o /home/daniel/Projects/java/scan/2021-12-21-193737-8510-1 -x c++ /home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp

/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp

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1/*
2 * Copyright (c) 1997, 2021, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25#include "precompiled.hpp"
26#include "jvm.h"
27#include "asm/macroAssembler.hpp"
28#include "classfile/vmClasses.hpp"
29#include "compiler/disassembler.hpp"
30#include "classfile/javaClasses.inline.hpp"
31#include "interpreter/interpreter.hpp"
32#include "interpreter/interpreterRuntime.hpp"
33#include "logging/log.hpp"
34#include "logging/logStream.hpp"
35#include "memory/allocation.inline.hpp"
36#include "memory/resourceArea.hpp"
37#include "prims/jvmtiExport.hpp"
38#include "prims/methodHandles.hpp"
39#include "runtime/flags/flagSetting.hpp"
40#include "runtime/frame.inline.hpp"
41#include "runtime/stubRoutines.hpp"
42#include "utilities/formatBuffer.hpp"
43#include "utilities/preserveException.hpp"
44
45#define __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 45, _masm)-> Disassembler::hook<MacroAssembler>(__FILE__"/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp", __LINE__45, _masm)->
46
47#ifdef PRODUCT
48#define BLOCK_COMMENT(str)Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 48, _masm)-> block_comment(str) /* nothing */
49#define STOP(error)block_comment(error); Disassembler::hook<MacroAssembler>
("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 49, _masm)-> stop(error) stop(error)
50#else
51#define BLOCK_COMMENT(str)Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 51, _masm)-> block_comment(str) __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 51, _masm)-> block_comment(str)
52#define STOP(error)block_comment(error); Disassembler::hook<MacroAssembler>
("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 52, _masm)-> stop(error) block_comment(error); __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 52, _masm)-> stop(error)
53#endif
54
55#define BIND(label)bind(label); Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 55, _masm)-> block_comment("label" ":") bind(label); BLOCK_COMMENT(#label ":")Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 55, _masm)-> block_comment(#label ":")
56
57void MethodHandles::load_klass_from_Class(MacroAssembler* _masm, Register klass_reg) {
58 if (VerifyMethodHandles)
59 verify_klass(_masm, klass_reg, VM_CLASS_ID(java_lang_Class)vmClassID::java_lang_Class_knum,
60 "MH argument is a Class");
61 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 61, _masm)-> movptr(klass_reg, Address(klass_reg, java_lang_Class::klass_offset()));
62}
63
64#ifdef ASSERT1
65static int check_nonzero(const char* xname, int x) {
66 assert(x != 0, "%s should be nonzero", xname)do { if (!(x != 0)) { (*g_assert_poison) = 'X';; report_vm_error
("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 66, "assert(" "x != 0" ") failed", "%s should be nonzero", xname
); ::breakpoint(); } } while (0);
67 return x;
68}
69#define NONZERO(x)check_nonzero("x", x) check_nonzero(#x, x)
70#else //ASSERT
71#define NONZERO(x)check_nonzero("x", x) (x)
72#endif //ASSERT
73
74#ifdef ASSERT1
75void MethodHandles::verify_klass(MacroAssembler* _masm,
76 Register obj, vmClassID klass_id,
77 const char* error_message) {
78 InstanceKlass** klass_addr = vmClasses::klass_addr_at(klass_id);
79 Klass* klass = vmClasses::klass_at(klass_id);
80 Register temp = rdi;
81 Register temp2 = noreg;
82 LP64_ONLY(temp2 = rscratch1)temp2 = rscratch1; // used by MacroAssembler::cmpptr and load_klass
83 Label L_ok, L_bad;
84 BLOCK_COMMENT("verify_klass {")Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 84, _masm)-> block_comment("verify_klass {");
85 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 85, _masm)-> verify_oop(obj)_verify_oop_checked(obj, "broken oop " "obj", "/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 85);
86 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 86, _masm)-> testptr(obj, obj);
87 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 87, _masm)-> jcc(Assembler::zero, L_bad);
88 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 88, _masm)-> push(temp); if (temp2 != noreg) __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 88, _masm)-> push(temp2);
89#define UNPUSH{ if (temp2 != noreg) Disassembler::hook<MacroAssembler>
("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 89, _masm)-> pop(temp2); Disassembler::hook<MacroAssembler
>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 89, _masm)-> pop(temp); } { if (temp2 != noreg) __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 89, _masm)-> pop(temp2); __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 89, _masm)-> pop(temp); }
90 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 90, _masm)-> load_klass(temp, obj, temp2);
91 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 91, _masm)-> cmpptr(temp, ExternalAddress((address) klass_addr));
92 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 92, _masm)-> jcc(Assembler::equal, L_ok);
93 intptr_t super_check_offset = klass->super_check_offset();
94 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 94, _masm)-> movptr(temp, Address(temp, super_check_offset));
95 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 95, _masm)-> cmpptr(temp, ExternalAddress((address) klass_addr));
96 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 96, _masm)-> jcc(Assembler::equal, L_ok);
97 UNPUSH{ if (temp2 != noreg) Disassembler::hook<MacroAssembler>
("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 97, _masm)-> pop(temp2); Disassembler::hook<MacroAssembler
>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 97, _masm)-> pop(temp); };
98 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 98, _masm)-> bind(L_bad);
99 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 99, _masm)-> STOP(error_message)block_comment(error_message); Disassembler::hook<MacroAssembler
>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 99, _masm)-> stop(error_message);
100 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 100, _masm)-> BIND(L_ok)bind(L_ok); Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 100, _masm)-> block_comment("L_ok" ":");
101 UNPUSH{ if (temp2 != noreg) Disassembler::hook<MacroAssembler>
("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 101, _masm)-> pop(temp2); Disassembler::hook<MacroAssembler
>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 101, _masm)-> pop(temp); };
102 BLOCK_COMMENT("} verify_klass")Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 102, _masm)-> block_comment("} verify_klass");
103}
104
105void MethodHandles::verify_ref_kind(MacroAssembler* _masm, int ref_kind, Register member_reg, Register temp) {
106 Label L;
107 BLOCK_COMMENT("verify_ref_kind {")Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 107, _masm)-> block_comment("verify_ref_kind {");
108 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 108, _masm)-> movl(temp, Address(member_reg, NONZERO(java_lang_invoke_MemberName::flags_offset())check_nonzero("java_lang_invoke_MemberName::flags_offset()", java_lang_invoke_MemberName
::flags_offset())));
109 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 109, _masm)-> shrl(temp, java_lang_invoke_MemberName::MN_REFERENCE_KIND_SHIFT);
110 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 110, _masm)-> andl(temp, java_lang_invoke_MemberName::MN_REFERENCE_KIND_MASK);
111 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 111, _masm)-> cmpl(temp, ref_kind);
112 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 112, _masm)-> jcc(Assembler::equal, L);
113 { char* buf = NEW_C_HEAP_ARRAY(char, 100, mtInternal)(char*) (AllocateHeap((100) * sizeof(char), mtInternal));
114 jio_snprintf(buf, 100, "verify_ref_kind expected %x", ref_kind);
115 if (ref_kind == JVM_REF_invokeVirtual ||
116 ref_kind == JVM_REF_invokeSpecial)
117 // could do this for all ref_kinds, but would explode assembly code size
118 trace_method_handle(_masm, buf);
119 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 119, _masm)-> STOP(buf)block_comment(buf); Disassembler::hook<MacroAssembler>(
"/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 119, _masm)-> stop(buf);
120 }
121 BLOCK_COMMENT("} verify_ref_kind")Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 121, _masm)-> block_comment("} verify_ref_kind");
122 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 122, _masm)-> bind(L);
123}
124
125#endif //ASSERT
126
127void MethodHandles::jump_from_method_handle(MacroAssembler* _masm, Register method, Register temp,
128 bool for_compiler_entry) {
129 assert(method == rbx, "interpreter calling convention")do { if (!(method == rbx)) { (*g_assert_poison) = 'X';; report_vm_error
("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 129, "assert(" "method == rbx" ") failed", "interpreter calling convention"
); ::breakpoint(); } } while (0);
130
131 Label L_no_such_method;
132 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 132, _masm)-> testptr(rbx, rbx);
133 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 133, _masm)-> jcc(Assembler::zero, L_no_such_method);
134
135 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 135, _masm)-> verify_method_ptr(method)_verify_method_ptr(method, "broken method " "method", "/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 135);
136
137 if (!for_compiler_entry && JvmtiExport::can_post_interpreter_events()) {
138 Label run_compiled_code;
139 // JVMTI events, such as single-stepping, are implemented partly by avoiding running
140 // compiled code in threads for which the event is enabled. Check here for
141 // interp_only_mode if these events CAN be enabled.
142#ifdef _LP641
143 Register rthread = r15_thread;
144#else
145 Register rthread = temp;
146 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 146, _masm)-> get_thread(rthread);
147#endif
148 // interp_only is an int, on little endian it is sufficient to test the byte only
149 // Is a cmpl faster?
150 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 150, _masm)-> cmpb(Address(rthread, JavaThread::interp_only_mode_offset()), 0);
151 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 151, _masm)-> jccb(Assembler::zero, run_compiled_code)jccb_0(Assembler::zero, run_compiled_code, "/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 151);
152 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 152, _masm)-> jmp(Address(method, Method::interpreter_entry_offset()));
153 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 153, _masm)-> BIND(run_compiled_code)bind(run_compiled_code); Disassembler::hook<MacroAssembler
>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 153, _masm)-> block_comment("run_compiled_code" ":");
154 }
155
156 const ByteSize entry_offset = for_compiler_entry ? Method::from_compiled_offset() :
157 Method::from_interpreted_offset();
158 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 158, _masm)-> jmp(Address(method, entry_offset));
159
160 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 160, _masm)-> bind(L_no_such_method);
161 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 161, _masm)-> jump(RuntimeAddress(StubRoutines::throw_AbstractMethodError_entry()));
162}
163
164void MethodHandles::jump_to_lambda_form(MacroAssembler* _masm,
165 Register recv, Register method_temp,
166 Register temp2,
167 bool for_compiler_entry) {
168 BLOCK_COMMENT("jump_to_lambda_form {")Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 168, _masm)-> block_comment("jump_to_lambda_form {");
169 // This is the initial entry point of a lazy method handle.
170 // After type checking, it picks up the invoker from the LambdaForm.
171 assert_different_registers(recv, method_temp, temp2);
172 assert(recv != noreg, "required register")do { if (!(recv != noreg)) { (*g_assert_poison) = 'X';; report_vm_error
("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 172, "assert(" "recv != noreg" ") failed", "required register"
); ::breakpoint(); } } while (0);
173 assert(method_temp == rbx, "required register for loading method")do { if (!(method_temp == rbx)) { (*g_assert_poison) = 'X';; report_vm_error
("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 173, "assert(" "method_temp == rbx" ") failed", "required register for loading method"
); ::breakpoint(); } } while (0);
174
175 // Load the invoker, as MH -> MH.form -> LF.vmentry
176 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 176, _masm)-> verify_oop(recv)_verify_oop_checked(recv, "broken oop " "recv", "/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 176);
177 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 177, _masm)-> load_heap_oop(method_temp, Address(recv, NONZERO(java_lang_invoke_MethodHandle::form_offset())check_nonzero("java_lang_invoke_MethodHandle::form_offset()",
java_lang_invoke_MethodHandle::form_offset())), temp2);
178 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 178, _masm)-> verify_oop(method_temp)_verify_oop_checked(method_temp, "broken oop " "method_temp",
"/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 178);
179 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 179, _masm)-> load_heap_oop(method_temp, Address(method_temp, NONZERO(java_lang_invoke_LambdaForm::vmentry_offset())check_nonzero("java_lang_invoke_LambdaForm::vmentry_offset()"
, java_lang_invoke_LambdaForm::vmentry_offset())), temp2);
180 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 180, _masm)-> verify_oop(method_temp)_verify_oop_checked(method_temp, "broken oop " "method_temp",
"/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 180);
181 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 181, _masm)-> load_heap_oop(method_temp, Address(method_temp, NONZERO(java_lang_invoke_MemberName::method_offset())check_nonzero("java_lang_invoke_MemberName::method_offset()",
java_lang_invoke_MemberName::method_offset())), temp2);
182 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 182, _masm)-> verify_oop(method_temp)_verify_oop_checked(method_temp, "broken oop " "method_temp",
"/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 182);
183 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 183, _masm)-> access_load_at(T_ADDRESS, IN_HEAP, method_temp,
184 Address(method_temp, NONZERO(java_lang_invoke_ResolvedMethodName::vmtarget_offset())check_nonzero("java_lang_invoke_ResolvedMethodName::vmtarget_offset()"
, java_lang_invoke_ResolvedMethodName::vmtarget_offset())),
185 noreg, noreg);
186
187 if (VerifyMethodHandles && !for_compiler_entry) {
188 // make sure recv is already on stack
189 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 189, _masm)-> movptr(temp2, Address(method_temp, Method::const_offset()));
190 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 190, _masm)-> load_sized_value(temp2,
191 Address(temp2, ConstMethod::size_of_parameters_offset()),
192 sizeof(u2), /*is_signed*/ false);
193 // assert(sizeof(u2) == sizeof(Method::_size_of_parameters), "");
194 Label L;
195 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 195, _masm)-> cmpoop(recv, __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 195, _masm)-> argument_address(temp2, -1));
196 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 196, _masm)-> jcc(Assembler::equal, L);
197 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 197, _masm)-> movptr(rax, __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 197, _masm)-> argument_address(temp2, -1));
198 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 198, _masm)-> STOP("receiver not on stack")block_comment("receiver not on stack"); Disassembler::hook<
MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 198, _masm)-> stop("receiver not on stack");
199 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 199, _masm)-> BIND(L)bind(L); Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 199, _masm)-> block_comment("L" ":");
200 }
201
202 jump_from_method_handle(_masm, method_temp, temp2, for_compiler_entry);
203 BLOCK_COMMENT("} jump_to_lambda_form")Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 203, _masm)-> block_comment("} jump_to_lambda_form");
204}
205
206
207// Code generation
208address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm,
209 vmIntrinsics::ID iid) {
210 const bool not_for_compiler_entry = false; // this is the interpreter entry
211 assert(is_signature_polymorphic(iid), "expected invoke iid")do { if (!(is_signature_polymorphic(iid))) { (*g_assert_poison
) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 211, "assert(" "is_signature_polymorphic(iid)" ") failed", "expected invoke iid"
); ::breakpoint(); } } while (0);
1
Taking false branch
→
2
←
Loop condition is false. Exiting loop
→
212 if (iid == vmIntrinsics::_invokeGeneric ||
3
←
Assuming 'iid' is not equal to '_invokeGeneric'
→
4
←
Taking false branch
→
213 iid
3.1
'iid' is not equal to '_compiledLambdaForm'
3.1
'iid' is not equal to '_compiledLambdaForm'
 == vmIntrinsics::_compiledLambdaForm) {
214 // Perhaps surprisingly, the symbolic references visible to Java are not directly used.
215 // They are linked to Java-generated adapters via MethodHandleNatives.linkMethod.
216 // They all allow an appendix argument.
217 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 217, _masm)-> hlt(); // empty stubs make SG sick
218 return NULL__null;
219 }
220
221 // No need in interpreter entry for linkToNative for now.
222 // Interpreter calls compiled entry through i2c.
223 if (iid == vmIntrinsics::_linkToNative) {
5
←
Assuming 'iid' is not equal to '_linkToNative'
→
6
←
Taking false branch
→
224 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 224, _masm)-> hlt();
225 return NULL__null;
226 }
227
228 // rsi/r13: sender SP (must preserve; see prepare_to_jump_from_interpreted)
229 // rbx: Method*
230 // rdx: argument locator (parameter slot count, added to rsp)
231 // rcx: used as temp to hold mh or receiver
232 // rax, rdi: garbage temps, blown away
233 Register rdx_argp = rdx; // argument list ptr, live on error paths
234 Register rax_temp = rax;
235 Register rcx_mh = rcx; // MH receiver; dies quickly and is recycled
236 Register rbx_method = rbx; // eventual target of this invocation
237
238 // here's where control starts out:
239 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 239, _masm)-> align(CodeEntryAlignment);
240 address entry_point = __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 240, _masm)-> pc();
241
242 if (VerifyMethodHandles) {
7
←
Assuming 'VerifyMethodHandles' is false
→
8
←
Taking false branch
→
243 assert(Method::intrinsic_id_size_in_bytes() == 2, "assuming Method::_intrinsic_id is u2")do { if (!(Method::intrinsic_id_size_in_bytes() == 2)) { (*g_assert_poison
) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 243, "assert(" "Method::intrinsic_id_size_in_bytes() == 2" ") failed"
, "assuming Method::_intrinsic_id is u2"); ::breakpoint(); } }
while (0);
244
245 Label L;
246 BLOCK_COMMENT("verify_intrinsic_id {")Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 246, _masm)-> block_comment("verify_intrinsic_id {");
247 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 247, _masm)-> cmpw(Address(rbx_method, Method::intrinsic_id_offset_in_bytes()), (int) iid);
248 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 248, _masm)-> jcc(Assembler::equal, L);
249 if (iid == vmIntrinsics::_linkToVirtual ||
250 iid == vmIntrinsics::_linkToSpecial) {
251 // could do this for all kinds, but would explode assembly code size
252 trace_method_handle(_masm, "bad Method*::intrinsic_id");
253 }
254 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 254, _masm)-> STOP("bad Method*::intrinsic_id")block_comment("bad Method*::intrinsic_id"); Disassembler::hook
<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 254, _masm)-> stop("bad Method*::intrinsic_id");
255 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 255, _masm)-> bind(L);
256 BLOCK_COMMENT("} verify_intrinsic_id")Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 256, _masm)-> block_comment("} verify_intrinsic_id");
257 }
258
259 // First task: Find out how big the argument list is.
260 Address rdx_first_arg_addr;
261 int ref_kind = signature_polymorphic_intrinsic_ref_kind(iid);
262 assert(ref_kind != 0 || iid == vmIntrinsics::_invokeBasic, "must be _invokeBasic or a linkTo intrinsic")do { if (!(ref_kind != 0 || iid == vmIntrinsics::_invokeBasic
)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 262, "assert(" "ref_kind != 0 || iid == vmIntrinsics::_invokeBasic"
") failed", "must be _invokeBasic or a linkTo intrinsic"); ::
breakpoint(); } } while (0);
9
←
Assuming 'ref_kind' is not equal to 0
→
10
←
Taking false branch
→
11
←
Loop condition is false. Exiting loop
→
263 if (ref_kind
11.1
'ref_kind' is not equal to 0
11.1
'ref_kind' is not equal to 0
 == 0 || MethodHandles::ref_kind_has_receiver(ref_kind)) {
12
←
Taking false branch
→
264 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 264, _masm)-> movptr(rdx_argp, Address(rbx_method, Method::const_offset()));
265 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 265, _masm)-> load_sized_value(rdx_argp,
266 Address(rdx_argp, ConstMethod::size_of_parameters_offset()),
267 sizeof(u2), /*is_signed*/ false);
268 // assert(sizeof(u2) == sizeof(Method::_size_of_parameters), "");
269 rdx_first_arg_addr = __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 269, _masm)-> argument_address(rdx_argp, -1);
270 } else {
271 DEBUG_ONLY(rdx_argp = noreg)rdx_argp = noreg;
272 }
273
274 if (!is_signature_polymorphic_static(iid)) {
13
←
Taking true branch
→
275 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 275, _masm)-> movptr(rcx_mh, rdx_first_arg_addr);
276 DEBUG_ONLY(rdx_argp = noreg)rdx_argp = noreg;
277 }
278
279 // rdx_first_arg_addr is live!
280
281 trace_method_handle_interpreter_entry(_masm, iid);
282
283 if (iid
13.1
'iid' is equal to '_invokeBasic'
13.1
'iid' is equal to '_invokeBasic'
 == vmIntrinsics::_invokeBasic) {
14
←
Taking true branch
→
284 generate_method_handle_dispatch(_masm, iid, rcx_mh, noreg, not_for_compiler_entry);
15
←
Calling 'MethodHandles::generate_method_handle_dispatch'
→
285
286 } else {
287 // Adjust argument list by popping the trailing MemberName argument.
288 Register rcx_recv = noreg;
289 if (MethodHandles::ref_kind_has_receiver(ref_kind)) {
290 // Load the receiver (not the MH; the actual MemberName's receiver) up from the interpreter stack.
291 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 291, _masm)-> movptr(rcx_recv = rcx, rdx_first_arg_addr);
292 }
293 DEBUG_ONLY(rdx_argp = noreg)rdx_argp = noreg;
294 Register rbx_member = rbx_method; // MemberName ptr; incoming method ptr is dead now
295 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 295, _masm)-> pop(rax_temp); // return address
296 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 296, _masm)-> pop(rbx_member); // extract last argument
297 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 297, _masm)-> push(rax_temp); // re-push return address
298 generate_method_handle_dispatch(_masm, iid, rcx_recv, rbx_member, not_for_compiler_entry);
299 }
300
301 return entry_point;
302}
303
304void MethodHandles::generate_method_handle_dispatch(MacroAssembler* _masm,
305 vmIntrinsics::ID iid,
306 Register receiver_reg,
307 Register member_reg,
308 bool for_compiler_entry) {
309 assert(is_signature_polymorphic(iid), "expected invoke iid")do { if (!(is_signature_polymorphic(iid))) { (*g_assert_poison
) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 309, "assert(" "is_signature_polymorphic(iid)" ") failed", "expected invoke iid"
); ::breakpoint(); } } while (0);
16
←
Taking false branch
→
17
←
Loop condition is false. Exiting loop
→
310 Register rbx_method = rbx; // eventual target of this invocation
311 // temps used in this code are not used in *either* compiled or interpreted calling sequences
312#ifdef _LP641
313 Register temp1 = rscratch1;
314 Register temp2 = rscratch2;
315 Register temp3 = rax;
316 if (for_compiler_entry
17.1
'for_compiler_entry' is false
17.1
'for_compiler_entry' is false
) {
18
←
Taking false branch
→
317 assert(receiver_reg == (iid == vmIntrinsics::_linkToStatic ? noreg : j_rarg0), "only valid assignment")do { if (!(receiver_reg == (iid == vmIntrinsics::_linkToStatic
? noreg : j_rarg0))) { (*g_assert_poison) = 'X';; report_vm_error
("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 317, "assert(" "receiver_reg == (iid == vmIntrinsics::_linkToStatic ? noreg : j_rarg0)"
") failed", "only valid assignment"); ::breakpoint(); } } while
(0);
318 assert_different_registers(temp1, j_rarg0, j_rarg1, j_rarg2, j_rarg3, j_rarg4, j_rarg5);
319 assert_different_registers(temp2, j_rarg0, j_rarg1, j_rarg2, j_rarg3, j_rarg4, j_rarg5);
320 assert_different_registers(temp3, j_rarg0, j_rarg1, j_rarg2, j_rarg3, j_rarg4, j_rarg5);
321 }
322#else
323 Register temp1 = (for_compiler_entry ? rsi : rdx);
324 Register temp2 = rdi;
325 Register temp3 = rax;
326 if (for_compiler_entry) {
327 assert(receiver_reg == (iid == vmIntrinsics::_linkToStatic ? noreg : rcx), "only valid assignment")do { if (!(receiver_reg == (iid == vmIntrinsics::_linkToStatic
? noreg : rcx))) { (*g_assert_poison) = 'X';; report_vm_error
("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 327, "assert(" "receiver_reg == (iid == vmIntrinsics::_linkToStatic ? noreg : rcx)"
") failed", "only valid assignment"); ::breakpoint(); } } while
(0);
328 assert_different_registers(temp1, rcx, rdx);
329 assert_different_registers(temp2, rcx, rdx);
330 assert_different_registers(temp3, rcx, rdx);
331 }
332#endif
333 else {
334 assert_different_registers(temp1, temp2, temp3, saved_last_sp_register()); // don't trash lastSP
19
←
Calling 'assert_different_registers<RegisterImpl *, RegisterImpl *, RegisterImpl *, RegisterImpl *>'
→
335 }
336 assert_different_registers(temp1, temp2, temp3, receiver_reg);
337 assert_different_registers(temp1, temp2, temp3, member_reg);
338
339 if (iid == vmIntrinsics::_invokeBasic || iid == vmIntrinsics::_linkToNative) {
340 if (iid == vmIntrinsics::_linkToNative) {
341 assert(for_compiler_entry, "only compiler entry is supported")do { if (!(for_compiler_entry)) { (*g_assert_poison) = 'X';; report_vm_error
("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 341, "assert(" "for_compiler_entry" ") failed", "only compiler entry is supported"
); ::breakpoint(); } } while (0);
342 }
343 // indirect through MH.form.vmentry.vmtarget
344 jump_to_lambda_form(_masm, receiver_reg, rbx_method, temp1, for_compiler_entry);
345
346 } else {
347 // The method is a member invoker used by direct method handles.
348 if (VerifyMethodHandles) {
349 // make sure the trailing argument really is a MemberName (caller responsibility)
350 verify_klass(_masm, member_reg, VM_CLASS_ID(java_lang_invoke_MemberName)vmClassID::java_lang_invoke_MemberName_knum,
351 "MemberName required for invokeVirtual etc.");
352 }
353
354 Address member_clazz( member_reg, NONZERO(java_lang_invoke_MemberName::clazz_offset())check_nonzero("java_lang_invoke_MemberName::clazz_offset()", java_lang_invoke_MemberName
::clazz_offset()));
355 Address member_vmindex( member_reg, NONZERO(java_lang_invoke_MemberName::vmindex_offset())check_nonzero("java_lang_invoke_MemberName::vmindex_offset()"
, java_lang_invoke_MemberName::vmindex_offset()));
356 Address member_vmtarget( member_reg, NONZERO(java_lang_invoke_MemberName::method_offset())check_nonzero("java_lang_invoke_MemberName::method_offset()",
java_lang_invoke_MemberName::method_offset()));
357 Address vmtarget_method( rbx_method, NONZERO(java_lang_invoke_ResolvedMethodName::vmtarget_offset())check_nonzero("java_lang_invoke_ResolvedMethodName::vmtarget_offset()"
, java_lang_invoke_ResolvedMethodName::vmtarget_offset()));
358
359 Register temp1_recv_klass = temp1;
360 if (iid != vmIntrinsics::_linkToStatic) {
361 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 361, _masm)-> verify_oop(receiver_reg)_verify_oop_checked(receiver_reg, "broken oop " "receiver_reg"
, "/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 361);
362 if (iid == vmIntrinsics::_linkToSpecial) {
363 // Don't actually load the klass; just null-check the receiver.
364 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 364, _masm)-> null_check(receiver_reg);
365 } else {
366 // load receiver klass itself
367 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 367, _masm)-> null_check(receiver_reg, oopDesc::klass_offset_in_bytes());
368 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 368, _masm)-> load_klass(temp1_recv_klass, receiver_reg, temp2);
369 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 369, _masm)-> verify_klass_ptr(temp1_recv_klass)_verify_klass_ptr(temp1_recv_klass, "broken klass " "temp1_recv_klass"
, "/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 369);
370 }
371 BLOCK_COMMENT("check_receiver {")Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 371, _masm)-> block_comment("check_receiver {");
372 // The receiver for the MemberName must be in receiver_reg.
373 // Check the receiver against the MemberName.clazz
374 if (VerifyMethodHandles && iid == vmIntrinsics::_linkToSpecial) {
375 // Did not load it above...
376 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 376, _masm)-> load_klass(temp1_recv_klass, receiver_reg, temp2);
377 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 377, _masm)-> verify_klass_ptr(temp1_recv_klass)_verify_klass_ptr(temp1_recv_klass, "broken klass " "temp1_recv_klass"
, "/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 377);
378 }
379 if (VerifyMethodHandles && iid != vmIntrinsics::_linkToInterface) {
380 Label L_ok;
381 Register temp2_defc = temp2;
382 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 382, _masm)-> load_heap_oop(temp2_defc, member_clazz, temp3);
383 load_klass_from_Class(_masm, temp2_defc);
384 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 384, _masm)-> verify_klass_ptr(temp2_defc)_verify_klass_ptr(temp2_defc, "broken klass " "temp2_defc", "/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 384);
385 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 385, _masm)-> check_klass_subtype(temp1_recv_klass, temp2_defc, temp3, L_ok);
386 // If we get here, the type check failed!
387 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 387, _masm)-> STOP("receiver class disagrees with MemberName.clazz")block_comment("receiver class disagrees with MemberName.clazz"
); Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 387, _masm)-> stop("receiver class disagrees with MemberName.clazz"
);
388 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 388, _masm)-> bind(L_ok);
389 }
390 BLOCK_COMMENT("} check_receiver")Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 390, _masm)-> block_comment("} check_receiver");
391 }
392 if (iid == vmIntrinsics::_linkToSpecial ||
393 iid == vmIntrinsics::_linkToStatic) {
394 DEBUG_ONLY(temp1_recv_klass = noreg)temp1_recv_klass = noreg; // these guys didn't load the recv_klass
395 }
396
397 // Live registers at this point:
398 // member_reg - MemberName that was the trailing argument
399 // temp1_recv_klass - klass of stacked receiver, if needed
400 // rsi/r13 - interpreter linkage (if interpreted)
401 // rcx, rdx, rsi, rdi, r8 - compiler arguments (if compiled)
402
403 Label L_incompatible_class_change_error;
404 switch (iid) {
405 case vmIntrinsics::_linkToSpecial:
406 if (VerifyMethodHandles) {
407 verify_ref_kind(_masm, JVM_REF_invokeSpecial, member_reg, temp3);
408 }
409 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 409, _masm)-> load_heap_oop(rbx_method, member_vmtarget);
410 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 410, _masm)-> access_load_at(T_ADDRESS, IN_HEAP, rbx_method, vmtarget_method, noreg, noreg);
411 break;
412
413 case vmIntrinsics::_linkToStatic:
414 if (VerifyMethodHandles) {
415 verify_ref_kind(_masm, JVM_REF_invokeStatic, member_reg, temp3);
416 }
417 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 417, _masm)-> load_heap_oop(rbx_method, member_vmtarget);
418 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 418, _masm)-> access_load_at(T_ADDRESS, IN_HEAP, rbx_method, vmtarget_method, noreg, noreg);
419 break;
420
421 case vmIntrinsics::_linkToVirtual:
422 {
423 // same as TemplateTable::invokevirtual,
424 // minus the CP setup and profiling:
425
426 if (VerifyMethodHandles) {
427 verify_ref_kind(_masm, JVM_REF_invokeVirtual, member_reg, temp3);
428 }
429
430 // pick out the vtable index from the MemberName, and then we can discard it:
431 Register temp2_index = temp2;
432 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 432, _masm)-> access_load_at(T_ADDRESS, IN_HEAP, temp2_index, member_vmindex, noreg, noreg);
433
434 if (VerifyMethodHandles) {
435 Label L_index_ok;
436 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 436, _masm)-> cmpl(temp2_index, 0);
437 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 437, _masm)-> jcc(Assembler::greaterEqual, L_index_ok);
438 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 438, _masm)-> STOP("no virtual index")block_comment("no virtual index"); Disassembler::hook<MacroAssembler
>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 438, _masm)-> stop("no virtual index");
439 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 439, _masm)-> BIND(L_index_ok)bind(L_index_ok); Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 439, _masm)-> block_comment("L_index_ok" ":");
440 }
441
442 // Note: The verifier invariants allow us to ignore MemberName.clazz and vmtarget
443 // at this point. And VerifyMethodHandles has already checked clazz, if needed.
444
445 // get target Method* & entry point
446 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 446, _masm)-> lookup_virtual_method(temp1_recv_klass, temp2_index, rbx_method);
447 break;
448 }
449
450 case vmIntrinsics::_linkToInterface:
451 {
452 // same as TemplateTable::invokeinterface
453 // (minus the CP setup and profiling, with different argument motion)
454 if (VerifyMethodHandles) {
455 verify_ref_kind(_masm, JVM_REF_invokeInterface, member_reg, temp3);
456 }
457
458 Register temp3_intf = temp3;
459 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 459, _masm)-> load_heap_oop(temp3_intf, member_clazz);
460 load_klass_from_Class(_masm, temp3_intf);
461 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 461, _masm)-> verify_klass_ptr(temp3_intf)_verify_klass_ptr(temp3_intf, "broken klass " "temp3_intf", "/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 461);
462
463 Register rbx_index = rbx_method;
464 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 464, _masm)-> access_load_at(T_ADDRESS, IN_HEAP, rbx_index, member_vmindex, noreg, noreg);
465 if (VerifyMethodHandles) {
466 Label L;
467 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 467, _masm)-> cmpl(rbx_index, 0);
468 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 468, _masm)-> jcc(Assembler::greaterEqual, L);
469 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 469, _masm)-> STOP("invalid vtable index for MH.invokeInterface")block_comment("invalid vtable index for MH.invokeInterface");
Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 469, _masm)-> stop("invalid vtable index for MH.invokeInterface"
);
470 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 470, _masm)-> bind(L);
471 }
472
473 // given intf, index, and recv klass, dispatch to the implementation method
474 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 474, _masm)-> lookup_interface_method(temp1_recv_klass, temp3_intf,
475 // note: next two args must be the same:
476 rbx_index, rbx_method,
477 temp2,
478 L_incompatible_class_change_error);
479 break;
480 }
481
482 default:
483 fatal("unexpected intrinsic %d: %s", vmIntrinsics::as_int(iid), vmIntrinsics::name_at(iid))do { (*g_assert_poison) = 'X';; report_fatal(INTERNAL_ERROR, "/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 483, "unexpected intrinsic %d: %s", vmIntrinsics::as_int(iid
), vmIntrinsics::name_at(iid)); ::breakpoint(); } while (0);
484 break;
485 }
486
487 // Live at this point:
488 // rbx_method
489 // rsi/r13 (if interpreted)
490
491 // After figuring out which concrete method to call, jump into it.
492 // Note that this works in the interpreter with no data motion.
493 // But the compiled version will require that rcx_recv be shifted out.
494 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 494, _masm)-> verify_method_ptr(rbx_method)_verify_method_ptr(rbx_method, "broken method " "rbx_method",
"/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 494);
495 jump_from_method_handle(_masm, rbx_method, temp1, for_compiler_entry);
496
497 if (iid == vmIntrinsics::_linkToInterface) {
498 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 498, _masm)-> bind(L_incompatible_class_change_error);
499 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 499, _masm)-> jump(RuntimeAddress(StubRoutines::throw_IncompatibleClassChangeError_entry()));
500 }
501 }
502}
503
504#ifndef PRODUCT
505void trace_method_handle_stub(const char* adaptername,
506 oopDesc* mh,
507 intptr_t* saved_regs,
508 intptr_t* entry_sp) {
509 // called as a leaf from native code: do not block the JVM!
510 bool has_mh = (strstr(adaptername, "/static") == NULL__null &&
511 strstr(adaptername, "linkTo") == NULL__null); // static linkers don't have MH
512 const char* mh_reg_name = has_mh ? "rcx_mh" : "rcx";
513 log_info(methodhandles)(!(LogImpl<(LogTag::_methodhandles), (LogTag::__NO_TAG), (
LogTag::__NO_TAG), (LogTag::__NO_TAG), (LogTag::__NO_TAG), (LogTag
::__NO_TAG)>::is_level(LogLevel::Info))) ? (void)0 : LogImpl
<(LogTag::_methodhandles), (LogTag::__NO_TAG), (LogTag::__NO_TAG
), (LogTag::__NO_TAG), (LogTag::__NO_TAG), (LogTag::__NO_TAG)
>::write<LogLevel::Info>("MH %s %s=" PTR_FORMAT"0x%016" "l" "x" " sp=" PTR_FORMAT"0x%016" "l" "x", adaptername, mh_reg_name, p2i(mh), p2i(entry_sp));
514
515 LogTarget(Trace, methodhandles)LogTargetImpl<LogLevel::Trace, (LogTag::_methodhandles), (
LogTag::__NO_TAG), (LogTag::__NO_TAG), (LogTag::__NO_TAG), (LogTag
::__NO_TAG), (LogTag::__NO_TAG)> lt;
516 if (lt.is_enabled()) {
517 ResourceMark rm;
518 LogStream ls(lt);
519 ls.print_cr("Registers:");
520 const int saved_regs_count = RegisterImpl::number_of_registers;
521 for (int i = 0; i < saved_regs_count; i++) {
522 Register r = as_Register(i);
523 // The registers are stored in reverse order on the stack (by pusha).
524#ifdef AMD641
525 assert(RegisterImpl::number_of_registers == 16, "sanity")do { if (!(RegisterImpl::number_of_registers == 16)) { (*g_assert_poison
) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 525, "assert(" "RegisterImpl::number_of_registers == 16" ") failed"
, "sanity"); ::breakpoint(); } } while (0);
526 if (r == rsp) {
527 // rsp is actually not stored by pusha(), compute the old rsp from saved_regs (rsp after pusha): saved_regs + 16 = old rsp
528 ls.print("%3s=" PTR_FORMAT"0x%016" "l" "x", r->name(), (intptr_t)(&saved_regs[16]));
529 } else {
530 ls.print("%3s=" PTR_FORMAT"0x%016" "l" "x", r->name(), saved_regs[((saved_regs_count - 1) - i)]);
531 }
532#else
533 ls.print("%3s=" PTR_FORMAT"0x%016" "l" "x", r->name(), saved_regs[((saved_regs_count - 1) - i)]);
534#endif
535 if ((i + 1) % 4 == 0) {
536 ls.cr();
537 } else {
538 ls.print(", ");
539 }
540 }
541 ls.cr();
542
543 // Note: We want to allow trace_method_handle from any call site.
544 // While trace_method_handle creates a frame, it may be entered
545 // without a PC on the stack top (e.g. not just after a call).
546 // Walking that frame could lead to failures due to that invalid PC.
547 // => carefully detect that frame when doing the stack walking
548
549 {
550 // dumping last frame with frame::describe
551
552 JavaThread* p = JavaThread::active();
553
554 // may not be needed by safer and unexpensive here
555 PreserveExceptionMark pem(Thread::current());
556 FrameValues values;
557
558 frame cur_frame = os::current_frame();
559
560 if (cur_frame.fp() != 0) { // not walkable
561
562 // Robust search of trace_calling_frame (independent of inlining).
563 // Assumes saved_regs comes from a pusha in the trace_calling_frame.
564 //
565 // We have to start the search from cur_frame, because trace_calling_frame may be it.
566 // It is guaranteed that trace_calling_frame is different from the top frame.
567 // But os::current_frame() does NOT return the top frame: it returns the next frame under it (caller's frame).
568 // (Due to inlining and tail call optimizations, caller's frame doesn't necessarily correspond to the immediate
569 // caller in the source code.)
570 assert(cur_frame.sp() < saved_regs, "registers not saved on stack ?")do { if (!(cur_frame.sp() < saved_regs)) { (*g_assert_poison
) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 570, "assert(" "cur_frame.sp() < saved_regs" ") failed",
"registers not saved on stack ?"); ::breakpoint(); } } while
(0);
571 frame trace_calling_frame = cur_frame;
572 while (trace_calling_frame.fp() < saved_regs) {
573 assert(trace_calling_frame.cb() == NULL, "not a C frame")do { if (!(trace_calling_frame.cb() == __null)) { (*g_assert_poison
) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 573, "assert(" "trace_calling_frame.cb() == __null" ") failed"
, "not a C frame"); ::breakpoint(); } } while (0);
574 trace_calling_frame = os::get_sender_for_C_frame(&trace_calling_frame);
575 }
576 assert(trace_calling_frame.sp() < saved_regs, "wrong frame")do { if (!(trace_calling_frame.sp() < saved_regs)) { (*g_assert_poison
) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 576, "assert(" "trace_calling_frame.sp() < saved_regs" ") failed"
, "wrong frame"); ::breakpoint(); } } while (0);
577
578 // safely create a frame and call frame::describe
579 intptr_t *dump_sp = trace_calling_frame.sender_sp();
580 intptr_t *dump_fp = trace_calling_frame.link();
581
582 if (has_mh) {
583 // The previous definition of walkable may have to be refined
584 // if new call sites cause the next frame constructor to start
585 // failing. Alternatively, frame constructors could be
586 // modified to support the current or future non walkable
587 // frames (but this is more intrusive and is not considered as
588 // part of this RFE, which will instead use a simpler output).
589 frame dump_frame = frame(dump_sp, dump_fp);
590 dump_frame.describe(values, 1);
591 } else {
592 // Stack may not be walkable (invalid PC above FP):
593 // Add descriptions without building a Java frame to avoid issues
594 values.describe(-1, dump_fp, "fp for #1 <not parsed, cannot trust pc>");
595 values.describe(-1, dump_sp, "sp for #1");
596 }
597 }
598 values.describe(-1, entry_sp, "raw top of stack");
599
600 ls.print_cr("Stack layout:");
601 values.print_on(p, &ls);
602 }
603 if (has_mh && oopDesc::is_oop(mh)) {
604 mh->print_on(&ls);
605 if (java_lang_invoke_MethodHandle::is_instance(mh)) {
606 java_lang_invoke_MethodHandle::form(mh)->print_on(&ls);
607 }
608 }
609 }
610}
611
612// The stub wraps the arguments in a struct on the stack to avoid
613// dealing with the different calling conventions for passing 6
614// arguments.
615struct MethodHandleStubArguments {
616 const char* adaptername;
617 oopDesc* mh;
618 intptr_t* saved_regs;
619 intptr_t* entry_sp;
620};
621void trace_method_handle_stub_wrapper(MethodHandleStubArguments* args) {
622 trace_method_handle_stub(args->adaptername,
623 args->mh,
624 args->saved_regs,
625 args->entry_sp);
626}
627
628void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) {
629 if (!log_is_enabled(Info, methodhandles)(LogImpl<(LogTag::_methodhandles), (LogTag::__NO_TAG), (LogTag
::__NO_TAG), (LogTag::__NO_TAG), (LogTag::__NO_TAG), (LogTag::
__NO_TAG)>::is_level(LogLevel::Info))) return;
630 BLOCK_COMMENT(err_msg("trace_method_handle %s {", adaptername))Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 630, _masm)-> block_comment(err_msg("trace_method_handle %s {"
, adaptername));
631 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 631, _masm)-> enter();
632 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 632, _masm)-> andptr(rsp, -16); // align stack if needed for FPU state
633 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 633, _masm)-> pusha();
634 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 634, _masm)-> mov(rbx, rsp); // for retreiving saved_regs
635 // Note: saved_regs must be in the entered frame for the
636 // robust stack walking implemented in trace_method_handle_stub.
637
638 // save FP result, valid at some call sites (adapter_opt_return_float, ...)
639 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 639, _masm)-> decrement(rsp, 2 * wordSize);
640#ifdef _LP641
641 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 641, _masm)-> movdbl(Address(rsp, 0), xmm0);
642#else
643 if (UseSSE >= 2) {
644 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 644, _masm)-> movdbl(Address(rsp, 0), xmm0);
645 } else if (UseSSE == 1) {
646 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 646, _masm)-> movflt(Address(rsp, 0), xmm0);
647 } else {
648 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 648, _masm)-> fst_d(Address(rsp, 0));
649 }
650#endif // LP64
651
652 // Incoming state:
653 // rcx: method handle
654 //
655 // To avoid calling convention issues, build a record on the stack
656 // and pass the pointer to that instead.
657 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 657, _masm)-> push(rbp); // entry_sp (with extra align space)
658 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 658, _masm)-> push(rbx); // pusha saved_regs
659 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 659, _masm)-> push(rcx); // mh
660 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 660, _masm)-> push(rcx); // slot for adaptername
661 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 661, _masm)-> movptr(Address(rsp, 0), (intptr_t) adaptername);
662 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 662, _masm)-> super_call_VM_leaf(CAST_FROM_FN_PTR(address, trace_method_handle_stub_wrapper)((address)((address_word)(trace_method_handle_stub_wrapper))), rsp);
663 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 663, _masm)-> increment(rsp, sizeof(MethodHandleStubArguments));
664
665#ifdef _LP641
666 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 666, _masm)-> movdbl(xmm0, Address(rsp, 0));
667#else
668 if (UseSSE >= 2) {
669 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 669, _masm)-> movdbl(xmm0, Address(rsp, 0));
670 } else if (UseSSE == 1) {
671 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 671, _masm)-> movflt(xmm0, Address(rsp, 0));
672 } else {
673 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 673, _masm)-> fld_d(Address(rsp, 0));
674 }
675#endif // LP64
676 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 676, _masm)-> increment(rsp, 2 * wordSize);
677
678 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 678, _masm)-> popa();
679 __Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 679, _masm)-> leave();
680 BLOCK_COMMENT("} trace_method_handle")Disassembler::hook<MacroAssembler>("/home/daniel/Projects/java/jdk/src/hotspot/cpu/x86/methodHandles_x86.cpp"
, 680, _masm)-> block_comment("} trace_method_handle");
681}
682#endif //PRODUCT
←

/home/daniel/Projects/java/jdk/src/hotspot/share/asm/register.hpp

1/*
2 * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25#ifndef SHARE_ASM_REGISTER_HPP
26#define SHARE_ASM_REGISTER_HPP
27
28#include "utilities/debug.hpp"
29#include "utilities/globalDefinitions.hpp"
30#include "utilities/macros.hpp"
31
32// Use AbstractRegister as shortcut
33class AbstractRegisterImpl;
34typedef AbstractRegisterImpl* AbstractRegister;
35
36
37// The super class for platform specific registers. Instead of using value objects,
38// registers are implemented as pointers. Subclassing is used so all registers can
39// use the debugging suport below. No virtual functions are used for efficiency.
40// They are canonicalized; i.e., registers are equal if their pointers are equal,
41// and vice versa. A concrete implementation may just map the register onto 'this'.
42
43class AbstractRegisterImpl {
44 protected:
45 int value() const { return (int)(intx)this; }
46};
47
48#define AS_REGISTER(type,name)((type)name_typeEnumValue) ((type)name##_##type##EnumValue)
49
50#define CONSTANT_REGISTER_DECLARATION(type, name, value)const type name = ((type)value); enum { name_typeEnumValue = (
value) } \
51const type name = ((type)value); \
52enum { name##_##type##EnumValue = (value) }
53
54#define REGISTER_DECLARATION(type, name, value)const type name = ((type)value) \
55const type name = ((type)value)
56
57#define REGISTER_DEFINITION(type, name)
58
59#include CPU_HEADER(register)"register_x86.hpp"
60
61// Debugging support
62
63template<typename R, typename... Rx>
64inline void assert_different_registers(R first_register, Rx... more_registers) {
65#ifdef ASSERT1
66 const R regs[] = { first_register, more_registers... };
20
←
Initialized here
→
67 // Verify there are no equal entries.
68 for (size_t i = 0; i < ARRAY_SIZE(regs)sizeof(array_size_impl(regs)) - 1; ++i) {
21
←
'i' initialized to 0
→
22
←
Loop condition is true. Entering loop body
→
69 for (size_t j = i + 1; j < ARRAY_SIZE(regs)sizeof(array_size_impl(regs)); ++j) {
23
←
Loop condition is true. Entering loop body
→
27
←
Loop condition is true. Entering loop body
→
70 assert(regs[i] != regs[j], "Multiple uses of register: %s", regs[i]->name())do { if (!(regs[i] != regs[j])) { (*g_assert_poison) = 'X';; report_vm_error
("/home/daniel/Projects/java/jdk/src/hotspot/share/asm/register.hpp"
, 70, "assert(" "regs[i] != regs[j]" ") failed", "Multiple uses of register: %s"
, regs[i]->name()); ::breakpoint(); } } while (0);
24
←
Assuming the condition is true
→
25
←
Taking false branch
→
26
←
Loop condition is false. Exiting loop
→
28
←
Assuming pointer value is null
→
29
←
Taking true branch
→
30
←
Called C++ object pointer is null
71 }
72 }
73#endif
74}
75
76#endif // SHARE_ASM_REGISTER_HPP