src/cpu/sparc/vm/methodHandles_sparc.cpp
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*** old/src/cpu/sparc/vm/methodHandles_sparc.cpp Mon Apr 26 07:45:28 2010
--- new/src/cpu/sparc/vm/methodHandles_sparc.cpp Mon Apr 26 07:45:28 2010
*** 1,7 ****
--- 1,7 ----
/*
! * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
! * 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 ****
--- 60,941 ----
}
// Code generation
address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) {
ShouldNotReachHere(); //NYI, 6815692
return NULL;
+ // 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) {
ShouldNotReachHere(); //NYI, 6815692
+ // 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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