Mercurial > hg > truffle
diff src/cpu/zero/vm/methodHandles_zero.cpp @ 6926:a3e2f723f2a5
8000780: make Zero build and run with JDK8
Reviewed-by: coleenp, dholmes, twisti
Contributed-by: Roman Kennke <rkennke@redhat.com>
author | twisti |
---|---|
date | Mon, 29 Oct 2012 11:08:48 -0700 |
parents | 4b95bbb36464 |
children |
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--- a/src/cpu/zero/vm/methodHandles_zero.cpp Fri Oct 26 14:18:57 2012 -0700 +++ b/src/cpu/zero/vm/methodHandles_zero.cpp Mon Oct 29 11:08:48 2012 -0700 @@ -24,26 +24,159 @@ */ #include "precompiled.hpp" +#include "interpreter/interpreterGenerator.hpp" #include "interpreter/interpreter.hpp" #include "memory/allocation.inline.hpp" #include "prims/methodHandles.hpp" -int MethodHandles::adapter_conversion_ops_supported_mask() { - return ((1<<java_lang_invoke_AdapterMethodHandle::OP_RETYPE_ONLY) - |(1<<java_lang_invoke_AdapterMethodHandle::OP_RETYPE_RAW) - |(1<<java_lang_invoke_AdapterMethodHandle::OP_CHECK_CAST) - |(1<<java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_PRIM) - |(1<<java_lang_invoke_AdapterMethodHandle::OP_REF_TO_PRIM) - |(1<<java_lang_invoke_AdapterMethodHandle::OP_SWAP_ARGS) - |(1<<java_lang_invoke_AdapterMethodHandle::OP_ROT_ARGS) - |(1<<java_lang_invoke_AdapterMethodHandle::OP_DUP_ARGS) - |(1<<java_lang_invoke_AdapterMethodHandle::OP_DROP_ARGS) - //|(1<<java_lang_invoke_AdapterMethodHandle::OP_SPREAD_ARGS) //BUG! - ); - // FIXME: MethodHandlesTest gets a crash if we enable OP_SPREAD_ARGS. +void MethodHandles::invoke_target(Method* method, TRAPS) { + + JavaThread *thread = (JavaThread *) THREAD; + ZeroStack *stack = thread->zero_stack(); + InterpreterFrame *frame = thread->top_zero_frame()->as_interpreter_frame(); + interpreterState istate = frame->interpreter_state(); + + // Trim back the stack to put the parameters at the top + stack->set_sp(istate->stack() + 1); + + Interpreter::invoke_method(method, method->from_interpreted_entry(), THREAD); + + // Convert the result + istate->set_stack(stack->sp() - 1); + +} + +oop MethodHandles::popFromStack(TRAPS) { + + JavaThread *thread = (JavaThread *) THREAD; + InterpreterFrame *frame = thread->top_zero_frame()->as_interpreter_frame(); + interpreterState istate = frame->interpreter_state(); + intptr_t* topOfStack = istate->stack(); + + oop top = STACK_OBJECT(-1); + MORE_STACK(-1); + istate->set_stack(topOfStack); + + return top; + +} + +int MethodHandles::method_handle_entry_invokeBasic(Method* method, intptr_t UNUSED, TRAPS) { + + JavaThread *thread = (JavaThread *) THREAD; + InterpreterFrame *frame = thread->top_zero_frame()->as_interpreter_frame(); + interpreterState istate = frame->interpreter_state(); + intptr_t* topOfStack = istate->stack(); + + // 'this' is a MethodHandle. We resolve the target method by accessing this.form.vmentry.vmtarget. + int numArgs = method->size_of_parameters(); + oop lform1 = java_lang_invoke_MethodHandle::form(STACK_OBJECT(-numArgs)); // this.form + oop vmEntry1 = java_lang_invoke_LambdaForm::vmentry(lform1); + Method* vmtarget = (Method*) java_lang_invoke_MemberName::vmtarget(vmEntry1); + + invoke_target(vmtarget, THREAD); + + // No deoptimized frames on the stack + return 0; +} + +int MethodHandles::method_handle_entry_linkToStaticOrSpecial(Method* method, intptr_t UNUSED, TRAPS) { + + // Pop appendix argument from stack. This is a MemberName which we resolve to the + // target method. + oop vmentry = popFromStack(THREAD); + + Method* vmtarget = (Method*) java_lang_invoke_MemberName::vmtarget(vmentry); + + invoke_target(vmtarget, THREAD); + + return 0; } -void MethodHandles::generate_method_handle_stub(MacroAssembler* masm, - MethodHandles::EntryKind ek) { - init_entry(ek, (MethodHandleEntry *) ek); +int MethodHandles::method_handle_entry_linkToInterface(Method* method, intptr_t UNUSED, TRAPS) { + JavaThread *thread = (JavaThread *) THREAD; + InterpreterFrame *frame = thread->top_zero_frame()->as_interpreter_frame(); + interpreterState istate = frame->interpreter_state(); + + // Pop appendix argument from stack. This is a MemberName which we resolve to the + // target method. + oop vmentry = popFromStack(THREAD); + intptr_t* topOfStack = istate->stack(); + + // Resolve target method by looking up in the receiver object's itable. + Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(vmentry)); + intptr_t vmindex = java_lang_invoke_MemberName::vmindex(vmentry); + Method* target = (Method*) java_lang_invoke_MemberName::vmtarget(vmentry); + + int numArgs = target->size_of_parameters(); + oop recv = STACK_OBJECT(-numArgs); + + InstanceKlass* klass_part = InstanceKlass::cast(recv->klass()); + itableOffsetEntry* ki = (itableOffsetEntry*) klass_part->start_of_itable(); + int i; + for ( i = 0 ; i < klass_part->itable_length() ; i++, ki++ ) { + if (ki->interface_klass() == clazz) break; + } + + itableMethodEntry* im = ki->first_method_entry(recv->klass()); + Method* vmtarget = im[vmindex].method(); + + invoke_target(vmtarget, THREAD); + + return 0; } + +int MethodHandles::method_handle_entry_linkToVirtual(Method* method, intptr_t UNUSED, TRAPS) { + JavaThread *thread = (JavaThread *) THREAD; + + InterpreterFrame *frame = thread->top_zero_frame()->as_interpreter_frame(); + interpreterState istate = frame->interpreter_state(); + + // Pop appendix argument from stack. This is a MemberName which we resolve to the + // target method. + oop vmentry = popFromStack(THREAD); + intptr_t* topOfStack = istate->stack(); + + // Resolve target method by looking up in the receiver object's vtable. + intptr_t vmindex = java_lang_invoke_MemberName::vmindex(vmentry); + Method* target = (Method*) java_lang_invoke_MemberName::vmtarget(vmentry); + int numArgs = target->size_of_parameters(); + oop recv = STACK_OBJECT(-numArgs); + Klass* clazz = recv->klass(); + Klass* klass_part = InstanceKlass::cast(clazz); + klassVtable* vtable = klass_part->vtable(); + Method* vmtarget = vtable->method_at(vmindex); + + invoke_target(vmtarget, THREAD); + + return 0; +} + +int MethodHandles::method_handle_entry_invalid(Method* method, intptr_t UNUSED, TRAPS) { + ShouldNotReachHere(); + return 0; +} + +address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* masm, + vmIntrinsics::ID iid) { + switch (iid) { + case vmIntrinsics::_invokeGeneric: + case vmIntrinsics::_compiledLambdaForm: + // Perhaps surprisingly, the symbolic references visible to Java are not directly used. + // They are linked to Java-generated adapters via MethodHandleNatives.linkMethod. + // They all allow an appendix argument. + return InterpreterGenerator::generate_entry_impl(masm, (address) MethodHandles::method_handle_entry_invalid); + case vmIntrinsics::_invokeBasic: + return InterpreterGenerator::generate_entry_impl(masm, (address) MethodHandles::method_handle_entry_invokeBasic); + case vmIntrinsics::_linkToStatic: + case vmIntrinsics::_linkToSpecial: + return InterpreterGenerator::generate_entry_impl(masm, (address) MethodHandles::method_handle_entry_linkToStaticOrSpecial); + case vmIntrinsics::_linkToInterface: + return InterpreterGenerator::generate_entry_impl(masm, (address) MethodHandles::method_handle_entry_linkToInterface); + case vmIntrinsics::_linkToVirtual: + return InterpreterGenerator::generate_entry_impl(masm, (address) MethodHandles::method_handle_entry_linkToVirtual); + default: + ShouldNotReachHere(); + return NULL; + } +}