src/cpu/sparc/vm/methodHandles_sparc.cpp
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6829193 Cdiff src/cpu/sparc/vm/methodHandles_sparc.cpp
src/cpu/sparc/vm/methodHandles_sparc.cpp
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*** 1,7 ****
/*
! * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
--- 1,7 ----
/*
! * Copyright 2008-2010 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*** 27,36 ****
--- 27,39 ----
#define __ _masm->
address MethodHandleEntry::start_compiled_entry(MacroAssembler* _masm,
address interpreted_entry) {
+ // Just before the actual machine code entry point, allocate space
+ // for a MethodHandleEntry::Data record, so that we can manage everything
+ // from one base pointer.
__ align(wordSize);
address target = __ pc() + sizeof(Data);
while (__ pc() < target) {
__ nop();
__ align(wordSize);
*** 57,70 ****
}
// Code generation
address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) {
! ShouldNotReachHere(); //NYI, 6815692
! return NULL;
}
// Generate an "entry" field for a method handle.
// This determines how the method handle will respond to calls.
void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) {
! ShouldNotReachHere(); //NYI, 6815692
}
--- 60,941 ----
}
// Code generation
address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) {
! // I5_savedSP: sender SP (must preserve)
! // G4 (Gargs): incoming argument list (must preserve)
! // G5_method: invoke methodOop; becomes method type.
! // G3_method_handle: receiver method handle (must load from sp[MethodTypeForm.vmslots])
! // O0, O1: garbage temps, blown away
! Register O0_argslot = O0;
! Register O1_scratch = O1;
!
! // emit WrongMethodType path first, to enable back-branch from main path
! Label wrong_method_type;
! __ bind(wrong_method_type);
! __ jump_to(AddressLiteral(Interpreter::throw_WrongMethodType_entry()), O1_scratch);
! __ delayed()->nop();
!
! // here's where control starts out:
! __ align(CodeEntryAlignment);
! address entry_point = __ pc();
!
! // fetch the MethodType from the method handle into G5_method_type
! {
! Register tem = G5_method;
! assert(tem == G5_method_type, "yes, it's the same register");
! for (jint* pchase = methodOopDesc::method_type_offsets_chain(); (*pchase) != -1; pchase++) {
! __ ld_ptr(Address(tem, *pchase), G5_method_type);
! }
! }
!
! // given the MethodType, find out where the MH argument is buried
! __ ld_ptr(Address(G5_method_type, __ delayed_value(java_dyn_MethodType::form_offset_in_bytes, O1_scratch)), O0_argslot);
! __ ldsw( Address(O0_argslot, __ delayed_value(java_dyn_MethodTypeForm::vmslots_offset_in_bytes, O1_scratch)), O0_argslot);
! __ ld_ptr(__ argument_address(O0_argslot), G3_method_handle);
!
! __ check_method_handle_type(G5_method_type, G3_method_handle, O1_scratch, wrong_method_type);
! __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
!
! return entry_point;
! }
!
!
! #ifdef ASSERT
! static void verify_argslot(MacroAssembler* _masm, Register argslot_reg, Register temp_reg, const char* error_message) {
! // Verify that argslot lies within (Gargs, FP].
! Label L_ok, L_bad;
! #ifdef _LP64
! __ add(FP, STACK_BIAS, temp_reg);
! __ cmp(argslot_reg, temp_reg);
! #else
! __ cmp(argslot_reg, FP);
! #endif
! __ brx(Assembler::greaterUnsigned, false, Assembler::pn, L_bad);
! __ delayed()->nop();
! __ cmp(Gargs, argslot_reg);
! __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok);
! __ delayed()->nop();
! __ bind(L_bad);
! __ stop(error_message);
! __ bind(L_ok);
! }
! #endif
!
!
! // Helper to insert argument slots into the stack.
! // arg_slots must be a multiple of stack_move_unit() and <= 0
! void MethodHandles::insert_arg_slots(MacroAssembler* _masm,
! RegisterOrConstant arg_slots,
! int arg_mask,
! Register argslot_reg,
! Register temp_reg, Register temp2_reg, Register temp3_reg) {
! assert(temp3_reg != noreg, "temp3 required");
! assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg,
! (!arg_slots.is_register() ? Gargs : arg_slots.as_register()));
!
! #ifdef ASSERT
! verify_argslot(_masm, argslot_reg, temp_reg, "insertion point must fall within current frame");
! if (arg_slots.is_register()) {
! Label L_ok, L_bad;
! __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD);
! __ br(Assembler::greater, false, Assembler::pn, L_bad);
! __ delayed()->nop();
! __ btst(-stack_move_unit() - 1, arg_slots.as_register());
! __ br(Assembler::zero, false, Assembler::pt, L_ok);
! __ delayed()->nop();
! __ bind(L_bad);
! __ stop("assert arg_slots <= 0 and clear low bits");
! __ bind(L_ok);
! } else {
! assert(arg_slots.as_constant() <= 0, "");
! assert(arg_slots.as_constant() % -stack_move_unit() == 0, "");
! }
! #endif // ASSERT
!
! #ifdef _LP64
! if (arg_slots.is_register()) {
! // Was arg_slots register loaded as signed int?
! Label L_ok;
! __ sll(arg_slots.as_register(), BitsPerInt, temp_reg);
! __ sra(temp_reg, BitsPerInt, temp_reg);
! __ cmp(arg_slots.as_register(), temp_reg);
! __ br(Assembler::equal, false, Assembler::pt, L_ok);
! __ delayed()->nop();
! __ stop("arg_slots register not loaded as signed int");
! __ bind(L_ok);
! }
! #endif
!
! // Make space on the stack for the inserted argument(s).
! // Then pull down everything shallower than argslot_reg.
! // The stacked return address gets pulled down with everything else.
! // That is, copy [sp, argslot) downward by -size words. In pseudo-code:
! // sp -= size;
! // for (temp = sp + size; temp < argslot; temp++)
! // temp[-size] = temp[0]
! // argslot -= size;
! RegisterOrConstant offset = temp3_reg;
! __ regcon_sll_ptr(arg_slots, LogBytesPerWord, offset);
!
! // Keep the stack pointer 2*wordSize aligned.
! const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1);
! RegisterOrConstant masked_offset = temp_reg;
! __ regcon_andn_ptr(offset, TwoWordAlignmentMask, masked_offset);
! __ add(SP, masked_offset, SP);
!
! __ mov(Gargs, temp_reg); // source pointer for copy
! __ add(Gargs, offset, Gargs);
!
! {
! Label loop;
! __ bind(loop);
! // pull one word down each time through the loop
! __ ld_ptr(Address(temp_reg, 0), temp2_reg);
! __ st_ptr(temp2_reg, Address(temp_reg, offset));
! __ add(temp_reg, wordSize, temp_reg);
! __ cmp(temp_reg, argslot_reg);
! __ brx(Assembler::less, false, Assembler::pt, loop);
! __ delayed()->nop(); // FILLME
! }
!
! // Now move the argslot down, to point to the opened-up space.
! __ add(argslot_reg, offset, argslot_reg);
! }
!
!
! // Helper to remove argument slots from the stack.
! // arg_slots must be a multiple of stack_move_unit() and >= 0
! void MethodHandles::remove_arg_slots(MacroAssembler* _masm,
! RegisterOrConstant arg_slots,
! Register argslot_reg,
! Register temp_reg, Register temp2_reg, Register temp3_reg) {
! assert(temp3_reg != noreg, "temp3 required");
! assert_different_registers(argslot_reg, temp_reg, temp2_reg, temp3_reg,
! (!arg_slots.is_register() ? Gargs : arg_slots.as_register()));
!
! RegisterOrConstant offset = temp3_reg;
! __ regcon_sll_ptr(arg_slots, LogBytesPerWord, offset);
!
! #ifdef ASSERT
! // Verify that [argslot..argslot+size) lies within (Gargs, FP).
! __ add(argslot_reg, offset, temp2_reg);
! verify_argslot(_masm, temp2_reg, temp_reg, "deleted argument(s) must fall within current frame");
! if (arg_slots.is_register()) {
! Label L_ok, L_bad;
! __ cmp(arg_slots.as_register(), (int32_t) NULL_WORD);
! __ br(Assembler::less, false, Assembler::pn, L_bad);
! __ delayed()->nop();
! __ btst(-stack_move_unit() - 1, arg_slots.as_register());
! __ br(Assembler::zero, false, Assembler::pt, L_ok);
! __ delayed()->nop();
! __ bind(L_bad);
! __ stop("assert arg_slots >= 0 and clear low bits");
! __ bind(L_ok);
! } else {
! assert(arg_slots.as_constant() >= 0, "");
! assert(arg_slots.as_constant() % -stack_move_unit() == 0, "");
! }
! #endif // ASSERT
!
! // Pull up everything shallower than argslot.
! // Then remove the excess space on the stack.
! // The stacked return address gets pulled up with everything else.
! // That is, copy [sp, argslot) upward by size words. In pseudo-code:
! // for (temp = argslot-1; temp >= sp; --temp)
! // temp[size] = temp[0]
! // argslot += size;
! // sp += size;
! __ sub(argslot_reg, wordSize, temp_reg); // source pointer for copy
! {
! Label loop;
! __ bind(loop);
! // pull one word up each time through the loop
! __ ld_ptr(Address(temp_reg, 0), temp2_reg);
! __ st_ptr(temp2_reg, Address(temp_reg, offset));
! __ sub(temp_reg, wordSize, temp_reg);
! __ cmp(temp_reg, Gargs);
! __ brx(Assembler::greaterEqual, false, Assembler::pt, loop);
! __ delayed()->nop(); // FILLME
! }
!
! // Now move the argslot up, to point to the just-copied block.
! __ add(Gargs, offset, Gargs);
! // And adjust the argslot address to point at the deletion point.
! __ add(argslot_reg, offset, argslot_reg);
!
! // Keep the stack pointer 2*wordSize aligned.
! const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1);
! RegisterOrConstant masked_offset = temp_reg;
! __ regcon_andn_ptr(offset, TwoWordAlignmentMask, masked_offset);
! __ add(SP, masked_offset, SP);
! }
!
!
! #ifndef PRODUCT
! extern "C" void print_method_handle(oop mh);
! void trace_method_handle_stub(const char* adaptername,
! oop mh) {
! #if 0
! intptr_t* entry_sp,
! intptr_t* saved_sp,
! intptr_t* saved_bp) {
! // called as a leaf from native code: do not block the JVM!
! intptr_t* last_sp = (intptr_t*) saved_bp[frame::interpreter_frame_last_sp_offset];
! intptr_t* base_sp = (intptr_t*) saved_bp[frame::interpreter_frame_monitor_block_top_offset];
! printf("MH %s mh="INTPTR_FORMAT" sp=("INTPTR_FORMAT"+"INTX_FORMAT") stack_size="INTX_FORMAT" bp="INTPTR_FORMAT"\n",
! adaptername, (intptr_t)mh, (intptr_t)entry_sp, (intptr_t)(saved_sp - entry_sp), (intptr_t)(base_sp - last_sp), (intptr_t)saved_bp);
! if (last_sp != saved_sp)
! printf("*** last_sp="INTPTR_FORMAT"\n", (intptr_t)last_sp);
! #endif
!
! printf("MH %s mh="INTPTR_FORMAT"\n", adaptername, (intptr_t) mh);
! print_method_handle(mh);
}
+ #endif // PRODUCT
+
+ //------------------------------------------------------------------------------
+ // MethodHandles::generate_method_handle_stub
+ //
// Generate an "entry" field for a method handle.
// This determines how the method handle will respond to calls.
void MethodHandles::generate_method_handle_stub(MacroAssembler* _masm, MethodHandles::EntryKind ek) {
! // Here is the register state during an interpreted call,
! // as set up by generate_method_handle_interpreter_entry():
! // - G5: garbage temp (was MethodHandle.invoke methodOop, unused)
! // - G3: receiver method handle
! // - O5_savedSP: sender SP (must preserve)
!
! Register O0_argslot = O0;
! Register O1_scratch = O1;
! Register O2_scratch = O2;
! Register O3_scratch = O3;
! Register G5_index = G5;
!
! guarantee(java_dyn_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets");
!
! // Some handy addresses:
! Address G5_method_fie( G5_method, in_bytes(methodOopDesc::from_interpreted_offset()));
!
! Address G3_mh_vmtarget( G3_method_handle, java_dyn_MethodHandle::vmtarget_offset_in_bytes());
!
! Address G3_dmh_vmindex( G3_method_handle, sun_dyn_DirectMethodHandle::vmindex_offset_in_bytes());
!
! Address G3_bmh_vmargslot( G3_method_handle, sun_dyn_BoundMethodHandle::vmargslot_offset_in_bytes());
! Address G3_bmh_argument( G3_method_handle, sun_dyn_BoundMethodHandle::argument_offset_in_bytes());
!
! Address G3_amh_vmargslot( G3_method_handle, sun_dyn_AdapterMethodHandle::vmargslot_offset_in_bytes());
! Address G3_amh_argument ( G3_method_handle, sun_dyn_AdapterMethodHandle::argument_offset_in_bytes());
! Address G3_amh_conversion(G3_method_handle, sun_dyn_AdapterMethodHandle::conversion_offset_in_bytes());
!
! const int java_mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes();
!
! if (have_entry(ek)) {
! __ nop(); // empty stubs make SG sick
! return;
! }
!
! address interp_entry = __ pc();
! if (UseCompressedOops) __ unimplemented("UseCompressedOops");
!
! #ifndef PRODUCT
! if (TraceMethodHandles) {
! // save: Gargs, O5_savedSP
! __ save(SP, -16*wordSize, SP);
! __ set((intptr_t) entry_name(ek), O0);
! __ mov(G3_method_handle, O1);
! __ call_VM_leaf(Lscratch, CAST_FROM_FN_PTR(address, trace_method_handle_stub));
! __ restore(SP, 16*wordSize, SP);
! }
! #endif // PRODUCT
!
! switch ((int) ek) {
! case _raise_exception:
! {
! // Not a real MH entry, but rather shared code for raising an
! // exception. Extra local arguments are passed in scratch
! // registers, as required type in O3, failing object (or NULL)
! // in O2, failing bytecode type in O1.
!
! __ mov(O5_savedSP, SP); // Cut the stack back to where the caller started.
!
! // Push arguments as if coming from the interpreter.
! Register O0_scratch = O0_argslot;
! int stackElementSize = Interpreter::stackElementSize();
!
! // Make space on the stack for the arguments.
! __ sub(SP, 4*stackElementSize, SP);
! __ sub(Gargs, 3*stackElementSize, Gargs);
! //__ sub(Lesp, 3*stackElementSize, Lesp);
!
! // void raiseException(int code, Object actual, Object required)
! __ st( O1_scratch, Address(Gargs, 2*stackElementSize)); // code
! __ st_ptr(O2_scratch, Address(Gargs, 1*stackElementSize)); // actual
! __ st_ptr(O3_scratch, Address(Gargs, 0*stackElementSize)); // required
!
! Label no_method;
! // FIXME: fill in _raise_exception_method with a suitable sun.dyn method
! __ set(AddressLiteral((address) &_raise_exception_method), G5_method);
! __ ld_ptr(Address(G5_method, 0), G5_method);
! __ tst(G5_method);
! __ brx(Assembler::zero, false, Assembler::pn, no_method);
! __ delayed()->nop();
!
! int jobject_oop_offset = 0;
! __ ld_ptr(Address(G5_method, jobject_oop_offset), G5_method);
! __ tst(G5_method);
! __ brx(Assembler::zero, false, Assembler::pn, no_method);
! __ delayed()->nop();
!
! __ verify_oop(G5_method);
! __ jump_indirect_to(G5_method_fie, O1_scratch);
! __ delayed()->nop();
!
! // If we get here, the Java runtime did not do its job of creating the exception.
! // Do something that is at least causes a valid throw from the interpreter.
! __ bind(no_method);
! __ unimplemented("_raise_exception no method");
! }
! break;
!
! case _invokestatic_mh:
! case _invokespecial_mh:
! {
! __ ld_ptr(G3_mh_vmtarget, G5_method); // target is a methodOop
! __ verify_oop(G5_method);
! // Same as TemplateTable::invokestatic or invokespecial,
! // minus the CP setup and profiling:
! if (ek == _invokespecial_mh) {
! // Must load & check the first argument before entering the target method.
! __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch);
! __ ld_ptr(__ argument_address(O0_argslot), G3_method_handle);
! __ null_check(G3_method_handle);
! __ verify_oop(G3_method_handle);
! }
! __ jump_indirect_to(G5_method_fie, O1_scratch);
! __ delayed()->nop();
! }
! break;
!
! case _invokevirtual_mh:
! {
! // Same as TemplateTable::invokevirtual,
! // minus the CP setup and profiling:
!
! // Pick out the vtable index and receiver offset from the MH,
! // and then we can discard it:
! __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch);
! __ ldsw(G3_dmh_vmindex, G5_index);
! // Note: The verifier allows us to ignore G3_mh_vmtarget.
! __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle);
! __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes());
!
! // Get receiver klass:
! Register O0_klass = O0_argslot;
! __ load_klass(G3_method_handle, O0_klass);
! __ verify_oop(O0_klass);
!
! // Get target methodOop & entry point:
! const int base = instanceKlass::vtable_start_offset() * wordSize;
! assert(vtableEntry::size() * wordSize == wordSize, "adjust the scaling in the code below");
!
! __ sll_ptr(G5_index, LogBytesPerWord, G5_index);
! __ add(O0_klass, G5_index, O0_klass);
! Address vtable_entry_addr(O0_klass, base + vtableEntry::method_offset_in_bytes());
! __ ld_ptr(vtable_entry_addr, G5_method);
!
! __ verify_oop(G5_method);
! __ jump_indirect_to(G5_method_fie, O1_scratch);
! __ delayed()->nop();
! }
! break;
!
! case _invokeinterface_mh:
! {
! // Same as TemplateTable::invokeinterface,
! // minus the CP setup and profiling:
! __ load_method_handle_vmslots(O0_argslot, G3_method_handle, O1_scratch);
! Register O1_intf = O1_scratch;
! __ ld_ptr(G3_mh_vmtarget, O1_intf);
! __ ldsw(G3_dmh_vmindex, G5_index);
! __ ld_ptr(__ argument_address(O0_argslot, -1), G3_method_handle);
! __ null_check(G3_method_handle, oopDesc::klass_offset_in_bytes());
!
! // Get receiver klass:
! Register O0_klass = O0_argslot;
! __ load_klass(G3_method_handle, O0_klass);
! __ verify_oop(O0_klass);
!
! // Get interface:
! Label no_such_interface;
! __ verify_oop(O1_intf);
! __ lookup_interface_method(O0_klass, O1_intf,
! // Note: next two args must be the same:
! G5_index, G5_method,
! O2_scratch,
! O3_scratch,
! no_such_interface);
!
! __ verify_oop(G5_method);
! __ jump_indirect_to(G5_method_fie, O1_scratch);
! __ delayed()->nop();
!
! __ bind(no_such_interface);
! // Throw an exception.
! // For historical reasons, it will be IncompatibleClassChangeError.
! __ unimplemented("not tested yet");
! __ ld_ptr(Address(O1_intf, java_mirror_offset), O3_scratch); // required interface
! __ mov(O0_klass, O2_scratch); // bad receiver
! __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O0_argslot);
! __ delayed()->mov(Bytecodes::_invokeinterface, O1_scratch); // who is complaining?
! }
! break;
!
! case _bound_ref_mh:
! case _bound_int_mh:
! case _bound_long_mh:
! case _bound_ref_direct_mh:
! case _bound_int_direct_mh:
! case _bound_long_direct_mh:
! {
! const bool direct_to_method = (ek >= _bound_ref_direct_mh);
! BasicType arg_type = T_ILLEGAL;
! int arg_mask = _INSERT_NO_MASK;
! int arg_slots = -1;
! get_ek_bound_mh_info(ek, arg_type, arg_mask, arg_slots);
!
! // Make room for the new argument:
! __ ldsw(G3_bmh_vmargslot, O0_argslot);
! __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
!
! insert_arg_slots(_masm, arg_slots * stack_move_unit(), arg_mask, O0_argslot, O1_scratch, O2_scratch, G5_index);
!
! // Store bound argument into the new stack slot:
! __ ld_ptr(G3_bmh_argument, O1_scratch);
! if (arg_type == T_OBJECT) {
! __ st_ptr(O1_scratch, Address(O0_argslot, 0));
! } else {
! Address prim_value_addr(O1_scratch, java_lang_boxing_object::value_offset_in_bytes(arg_type));
! __ load_sized_value(prim_value_addr, O2_scratch, type2aelembytes(arg_type), is_signed_subword_type(arg_type));
! if (arg_slots == 2) {
! __ unimplemented("not yet tested");
! #ifndef _LP64
! __ signx(O2_scratch, O3_scratch); // Sign extend
! #endif
! __ st_long(O2_scratch, Address(O0_argslot, 0)); // Uses O2/O3 on !_LP64
! } else {
! __ st_ptr( O2_scratch, Address(O0_argslot, 0));
! }
! }
!
! if (direct_to_method) {
! __ ld_ptr(G3_mh_vmtarget, G5_method); // target is a methodOop
! __ verify_oop(G5_method);
! __ jump_indirect_to(G5_method_fie, O1_scratch);
! __ delayed()->nop();
! } else {
! __ ld_ptr(G3_mh_vmtarget, G3_method_handle); // target is a methodOop
! __ verify_oop(G3_method_handle);
! __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
! }
! }
! break;
!
! case _adapter_retype_only:
! case _adapter_retype_raw:
! // Immediately jump to the next MH layer:
! __ ld_ptr(G3_mh_vmtarget, G3_method_handle);
! __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
! // This is OK when all parameter types widen.
! // It is also OK when a return type narrows.
! break;
!
! case _adapter_check_cast:
! {
! // Temps:
! Register G5_klass = G5_index; // Interesting AMH data.
!
! // Check a reference argument before jumping to the next layer of MH:
! __ ldsw(G3_amh_vmargslot, O0_argslot);
! Address vmarg = __ argument_address(O0_argslot);
!
! // What class are we casting to?
! __ ld_ptr(G3_amh_argument, G5_klass); // This is a Class object!
! __ ld_ptr(Address(G5_klass, java_lang_Class::klass_offset_in_bytes()), G5_klass);
!
! Label done;
! __ ld_ptr(vmarg, O1_scratch);
! __ tst(O1_scratch);
! __ brx(Assembler::zero, false, Assembler::pn, done); // No cast if null.
! __ delayed()->nop();
! __ load_klass(O1_scratch, O1_scratch);
!
! // Live at this point:
! // - G5_klass : klass required by the target method
! // - O1_scratch : argument klass to test
! // - G3_method_handle: adapter method handle
! __ check_klass_subtype(O1_scratch, G5_klass, O0_argslot, O2_scratch, done);
!
! // If we get here, the type check failed!
! __ ldsw(G3_amh_vmargslot, O0_argslot); // reload argslot field
! __ ld_ptr(G3_amh_argument, O3_scratch); // required class
! __ ld_ptr(vmarg, O2_scratch); // bad object
! __ jump_to(AddressLiteral(from_interpreted_entry(_raise_exception)), O0_argslot);
! __ delayed()->mov(Bytecodes::_checkcast, O1_scratch); // who is complaining?
!
! __ bind(done);
! // Get the new MH:
! __ ld_ptr(G3_mh_vmtarget, G3_method_handle);
! __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
! }
! break;
!
! case _adapter_prim_to_prim:
! case _adapter_ref_to_prim:
! // Handled completely by optimized cases.
! __ stop("init_AdapterMethodHandle should not issue this");
! break;
!
! case _adapter_opt_i2i: // optimized subcase of adapt_prim_to_prim
! //case _adapter_opt_f2i: // optimized subcase of adapt_prim_to_prim
! case _adapter_opt_l2i: // optimized subcase of adapt_prim_to_prim
! case _adapter_opt_unboxi: // optimized subcase of adapt_ref_to_prim
! {
! // Perform an in-place conversion to int or an int subword.
! __ ldsw(G3_amh_vmargslot, O0_argslot);
! Address vmarg = __ argument_address(O0_argslot);
! Address value;
! bool value_left_justified = false;
!
! switch (ek) {
! case _adapter_opt_i2i:
! case _adapter_opt_l2i:
! __ unimplemented(entry_name(ek));
! value = vmarg;
! break;
! case _adapter_opt_unboxi:
! {
! // Load the value up from the heap.
! __ ld_ptr(vmarg, O1_scratch);
! int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT);
! #ifdef ASSERT
! for (int bt = T_BOOLEAN; bt < T_INT; bt++) {
! if (is_subword_type(BasicType(bt)))
! assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(BasicType(bt)), "");
! }
! #endif
! __ null_check(O1_scratch, value_offset);
! value = Address(O1_scratch, value_offset);
! #ifdef _BIG_ENDIAN
! // Values stored in objects are packed.
! value_left_justified = true;
! #endif
! }
! break;
! default:
! ShouldNotReachHere();
! }
!
! // This check is required on _BIG_ENDIAN
! Register G5_vminfo = G5_index;
! __ ldsw(G3_amh_conversion, G5_vminfo);
! assert(CONV_VMINFO_SHIFT == 0, "preshifted");
!
! // Original 32-bit vmdata word must be of this form:
! // | MBZ:6 | signBitCount:8 | srcDstTypes:8 | conversionOp:8 |
! __ lduw(value, O1_scratch);
! if (!value_left_justified)
! __ sll(O1_scratch, G5_vminfo, O1_scratch);
! Label zero_extend, done;
! __ btst(CONV_VMINFO_SIGN_FLAG, G5_vminfo);
! __ br(Assembler::zero, false, Assembler::pn, zero_extend);
! __ delayed()->nop();
!
! // this path is taken for int->byte, int->short
! __ sra(O1_scratch, G5_vminfo, O1_scratch);
! __ ba(false, done);
! __ delayed()->nop();
!
! __ bind(zero_extend);
! // this is taken for int->char
! __ srl(O1_scratch, G5_vminfo, O1_scratch);
!
! __ bind(done);
! __ st(O1_scratch, vmarg);
!
! // Get the new MH:
! __ ld_ptr(G3_mh_vmtarget, G3_method_handle);
! __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
! }
! break;
!
! case _adapter_opt_i2l: // optimized subcase of adapt_prim_to_prim
! case _adapter_opt_unboxl: // optimized subcase of adapt_ref_to_prim
! {
! // Perform an in-place int-to-long or ref-to-long conversion.
! __ ldsw(G3_amh_vmargslot, O0_argslot);
!
! // On big-endian machine we duplicate the slot and store the MSW
! // in the first slot.
! __ add(Gargs, __ argument_offset(O0_argslot, 1), O0_argslot);
!
! insert_arg_slots(_masm, stack_move_unit(), _INSERT_INT_MASK, O0_argslot, O1_scratch, O2_scratch, G5_index);
!
! Address arg_lsw(O0_argslot, 0);
! Address arg_msw(O0_argslot, -Interpreter::stackElementSize());
!
! switch (ek) {
! case _adapter_opt_i2l:
! {
! __ ldsw(arg_lsw, O2_scratch); // Load LSW
! #ifndef _LP64
! __ signx(O2_scratch, O3_scratch); // Sign extend
! #endif
! __ st_long(O2_scratch, arg_msw); // Uses O2/O3 on !_LP64
! }
! break;
! case _adapter_opt_unboxl:
! {
! // Load the value up from the heap.
! __ ld_ptr(arg_lsw, O1_scratch);
! int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_LONG);
! assert(value_offset == java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE), "");
! __ null_check(O1_scratch, value_offset);
! __ ld_long(Address(O1_scratch, value_offset), O2_scratch); // Uses O2/O3 on !_LP64
! __ st_long(O2_scratch, arg_msw);
! }
! break;
! default:
! ShouldNotReachHere();
! }
!
! __ ld_ptr(G3_mh_vmtarget, G3_method_handle);
! __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
! }
! break;
!
! case _adapter_opt_f2d: // optimized subcase of adapt_prim_to_prim
! case _adapter_opt_d2f: // optimized subcase of adapt_prim_to_prim
! {
! // perform an in-place floating primitive conversion
! __ unimplemented(entry_name(ek));
! }
! break;
!
! case _adapter_prim_to_ref:
! __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
! break;
!
! case _adapter_swap_args:
! case _adapter_rot_args:
! // handled completely by optimized cases
! __ stop("init_AdapterMethodHandle should not issue this");
! break;
!
! case _adapter_opt_swap_1:
! case _adapter_opt_swap_2:
! case _adapter_opt_rot_1_up:
! case _adapter_opt_rot_1_down:
! case _adapter_opt_rot_2_up:
! case _adapter_opt_rot_2_down:
! {
! int swap_bytes = 0, rotate = 0;
! get_ek_adapter_opt_swap_rot_info(ek, swap_bytes, rotate);
!
! // 'argslot' is the position of the first argument to swap.
! __ ldsw(G3_amh_vmargslot, O0_argslot);
! __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
!
! // 'vminfo' is the second.
! Register O1_destslot = O1_scratch;
! __ ldsw(G3_amh_conversion, O1_destslot);
! assert(CONV_VMINFO_SHIFT == 0, "preshifted");
! __ and3(O1_destslot, CONV_VMINFO_MASK, O1_destslot);
! __ add(Gargs, __ argument_offset(O1_destslot), O1_destslot);
!
! if (!rotate) {
! for (int i = 0; i < swap_bytes; i += wordSize) {
! __ ld_ptr(Address(O0_argslot, i), O2_scratch);
! __ ld_ptr(Address(O1_destslot, i), O3_scratch);
! __ st_ptr(O3_scratch, Address(O0_argslot, i));
! __ st_ptr(O2_scratch, Address(O1_destslot, i));
! }
! } else {
! // Save the first chunk, which is going to get overwritten.
! switch (swap_bytes) {
! case 4 : __ lduw(Address(O0_argslot, 0), O2_scratch); break;
! case 16: __ ldx( Address(O0_argslot, 8), O3_scratch); //fall-thru
! case 8 : __ ldx( Address(O0_argslot, 0), O2_scratch); break;
! default: ShouldNotReachHere();
! }
!
! if (rotate > 0) {
! // Rorate upward.
! __ sub(O0_argslot, swap_bytes, O0_argslot);
! #if ASSERT
! {
! // Verify that argslot > destslot, by at least swap_bytes.
! Label L_ok;
! __ cmp(O0_argslot, O1_destslot);
! __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, L_ok);
! __ delayed()->nop();
! __ stop("source must be above destination (upward rotation)");
! __ bind(L_ok);
! }
! #endif
! // Work argslot down to destslot, copying contiguous data upwards.
! // Pseudo-code:
! // argslot = src_addr - swap_bytes
! // destslot = dest_addr
! // while (argslot >= destslot) {
! // *(argslot + swap_bytes) = *(argslot + 0);
! // argslot--;
! // }
! Label loop;
! __ bind(loop);
! __ ld_ptr(Address(O0_argslot, 0), G5_index);
! __ st_ptr(G5_index, Address(O0_argslot, swap_bytes));
! __ sub(O0_argslot, wordSize, O0_argslot);
! __ cmp(O0_argslot, O1_destslot);
! __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, loop);
! __ delayed()->nop(); // FILLME
! } else {
! __ add(O0_argslot, swap_bytes, O0_argslot);
! #if ASSERT
! {
! // Verify that argslot < destslot, by at least swap_bytes.
! Label L_ok;
! __ cmp(O0_argslot, O1_destslot);
! __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, L_ok);
! __ delayed()->nop();
! __ stop("source must be above destination (upward rotation)");
! __ bind(L_ok);
! }
! #endif
! // Work argslot up to destslot, copying contiguous data downwards.
! // Pseudo-code:
! // argslot = src_addr + swap_bytes
! // destslot = dest_addr
! // while (argslot >= destslot) {
! // *(argslot - swap_bytes) = *(argslot + 0);
! // argslot++;
! // }
! Label loop;
! __ bind(loop);
! __ ld_ptr(Address(O0_argslot, 0), G5_index);
! __ st_ptr(G5_index, Address(O0_argslot, -swap_bytes));
! __ add(O0_argslot, wordSize, O0_argslot);
! __ cmp(O0_argslot, O1_destslot);
! __ brx(Assembler::lessEqualUnsigned, false, Assembler::pt, loop);
! __ delayed()->nop(); // FILLME
! }
!
! // Store the original first chunk into the destination slot, now free.
! switch (swap_bytes) {
! case 4 : __ stw(O2_scratch, Address(O1_destslot, 0)); break;
! case 16: __ stx(O3_scratch, Address(O1_destslot, 8)); // fall-thru
! case 8 : __ stx(O2_scratch, Address(O1_destslot, 0)); break;
! default: ShouldNotReachHere();
! }
! }
!
! __ ld_ptr(G3_mh_vmtarget, G3_method_handle);
! __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
! }
! break;
!
! case _adapter_dup_args:
! {
! // 'argslot' is the position of the first argument to duplicate.
! __ ldsw(G3_amh_vmargslot, O0_argslot);
! __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
!
! // 'stack_move' is negative number of words to duplicate.
! Register G5_stack_move = G5_index;
! __ ldsw(G3_amh_conversion, G5_stack_move);
! __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move);
!
! // Remember the old Gargs (argslot[0]).
! Register O1_oldarg = O1_scratch;
! __ mov(Gargs, O1_oldarg);
!
! // Move Gargs down to make room for dups.
! __ sll_ptr(G5_stack_move, LogBytesPerWord, G5_stack_move);
! __ add(Gargs, G5_stack_move, Gargs);
!
! // Compute the new Gargs (argslot[0]).
! Register O2_newarg = O2_scratch;
! __ mov(Gargs, O2_newarg);
!
! // Copy from oldarg[0...] down to newarg[0...]
! // Pseude-code:
! // O1_oldarg = old-Gargs
! // O2_newarg = new-Gargs
! // O0_argslot = argslot
! // while (O2_newarg < O1_oldarg) *O2_newarg = *O0_argslot++
! Label loop;
! __ bind(loop);
! __ ld_ptr(Address(O0_argslot, 0), O3_scratch);
! __ st_ptr(O3_scratch, Address(O2_newarg, 0));
! __ add(O0_argslot, wordSize, O0_argslot);
! __ add(O2_newarg, wordSize, O2_newarg);
! __ cmp(O2_newarg, O1_oldarg);
! __ brx(Assembler::less, false, Assembler::pt, loop);
! __ delayed()->nop(); // FILLME
!
! __ ld_ptr(G3_mh_vmtarget, G3_method_handle);
! __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
! }
! break;
!
! case _adapter_drop_args:
! {
! // 'argslot' is the position of the first argument to nuke.
! __ ldsw(G3_amh_vmargslot, O0_argslot);
! __ add(Gargs, __ argument_offset(O0_argslot), O0_argslot);
!
! // 'stack_move' is number of words to drop.
! Register G5_stack_move = G5_index;
! __ ldsw(G3_amh_conversion, G5_stack_move);
! __ sra(G5_stack_move, CONV_STACK_MOVE_SHIFT, G5_stack_move);
!
! remove_arg_slots(_masm, G5_stack_move, O0_argslot, O1_scratch, O2_scratch, O3_scratch);
!
! __ ld_ptr(G3_mh_vmtarget, G3_method_handle);
! __ jump_to_method_handle_entry(G3_method_handle, O1_scratch);
! }
! break;
!
! case _adapter_collect_args:
! __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
! break;
!
! case _adapter_spread_args:
! // Handled completely by optimized cases.
! __ stop("init_AdapterMethodHandle should not issue this");
! break;
!
! case _adapter_opt_spread_0:
! case _adapter_opt_spread_1:
! case _adapter_opt_spread_more:
! {
! // spread an array out into a group of arguments
! __ unimplemented(entry_name(ek));
! }
! break;
!
! case _adapter_flyby:
! case _adapter_ricochet:
! __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
! break;
!
! default:
! ShouldNotReachHere();
! }
!
! address me_cookie = MethodHandleEntry::start_compiled_entry(_masm, interp_entry);
! __ unimplemented(entry_name(ek)); // %%% FIXME: NYI
!
! init_entry(ek, MethodHandleEntry::finish_compiled_entry(_masm, me_cookie));
}
src/cpu/sparc/vm/methodHandles_sparc.cpp
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