Mercurial > hg > graal-jvmci-8
diff src/cpu/sparc/vm/methodHandles_sparc.hpp @ 3753:cba7b5c2d53f
7045514: SPARC assembly code for JSR 292 ricochet frames
Reviewed-by: kvn, jrose
author | never |
---|---|
date | Fri, 03 Jun 2011 22:31:43 -0700 |
parents | |
children | 341a57af9b0a |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/cpu/sparc/vm/methodHandles_sparc.hpp Fri Jun 03 22:31:43 2011 -0700 @@ -0,0 +1,224 @@ +/* + * Copyright (c) 2011, Oracle and/or its affiliates. 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. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + * + */ + +// Platform-specific definitions for method handles. +// These definitions are inlined into class MethodHandles. + +// Adapters +enum /* platform_dependent_constants */ { + adapter_code_size = NOT_LP64(22000 DEBUG_ONLY(+ 40000)) LP64_ONLY(32000 DEBUG_ONLY(+ 80000)) +}; + +public: + +class RicochetFrame : public ResourceObj { + friend class MethodHandles; + + private: + /* + RF field x86 SPARC + sender_pc *(rsp+0) I7-0x8 + sender_link rbp I6+BIAS + exact_sender_sp rsi/r13 I5_savedSP + conversion *(rcx+&amh_conv) L5_conv + saved_args_base rax L4_sab (cf. Gargs = G4) + saved_args_layout #NULL L3_sal + saved_target *(rcx+&mh_vmtgt) L2_stgt + continuation #STUB_CON L1_cont + */ + static const Register L1_continuation ; // what to do when control gets back here + static const Register L2_saved_target ; // target method handle to invoke on saved_args + static const Register L3_saved_args_layout; // caching point for MethodTypeForm.vmlayout cookie + static const Register L4_saved_args_base ; // base of pushed arguments (slot 0, arg N) (-3) + static const Register L5_conversion ; // misc. information from original AdapterMethodHandle (-2) + + frame _fr; + + RicochetFrame(const frame& fr) : _fr(fr) { } + + intptr_t* register_addr(Register reg) const { + assert((_fr.sp() + reg->sp_offset_in_saved_window()) == _fr.register_addr(reg), "must agree"); + return _fr.register_addr(reg); + } + intptr_t register_value(Register reg) const { return *register_addr(reg); } + + public: + intptr_t* continuation() const { return (intptr_t*) register_value(L1_continuation); } + oop saved_target() const { return (oop) register_value(L2_saved_target); } + oop saved_args_layout() const { return (oop) register_value(L3_saved_args_layout); } + intptr_t* saved_args_base() const { return (intptr_t*) register_value(L4_saved_args_base); } + intptr_t conversion() const { return register_value(L5_conversion); } + intptr_t* exact_sender_sp() const { return (intptr_t*) register_value(I5_savedSP); } + intptr_t* sender_link() const { return _fr.sender_sp(); } // XXX + address sender_pc() const { return _fr.sender_pc(); } + + // This value is not used for much, but it apparently must be nonzero. + static int frame_size_in_bytes() { return wordSize * 4; } + + intptr_t* extended_sender_sp() const { return saved_args_base(); } + + intptr_t return_value_slot_number() const { + return adapter_conversion_vminfo(conversion()); + } + BasicType return_value_type() const { + return adapter_conversion_dest_type(conversion()); + } + bool has_return_value_slot() const { + return return_value_type() != T_VOID; + } + intptr_t* return_value_slot_addr() const { + assert(has_return_value_slot(), ""); + return saved_arg_slot_addr(return_value_slot_number()); + } + intptr_t* saved_target_slot_addr() const { + return saved_arg_slot_addr(saved_args_length()); + } + intptr_t* saved_arg_slot_addr(int slot) const { + assert(slot >= 0, ""); + return (intptr_t*)( (address)saved_args_base() + (slot * Interpreter::stackElementSize) ); + } + + jint saved_args_length() const; + jint saved_arg_offset(int arg) const; + + // GC interface + oop* saved_target_addr() { return (oop*)register_addr(L2_saved_target); } + oop* saved_args_layout_addr() { return (oop*)register_addr(L3_saved_args_layout); } + + oop compute_saved_args_layout(bool read_cache, bool write_cache); + +#ifdef ASSERT + // The magic number is supposed to help find ricochet frames within the bytes of stack dumps. + enum { MAGIC_NUMBER_1 = 0xFEED03E, MAGIC_NUMBER_2 = 0xBEEF03E }; + static const Register L0_magic_number_1 ; // cookie for debugging, at start of RSA + static Address magic_number_2_addr() { return Address(L4_saved_args_base, -wordSize); } + intptr_t magic_number_1() const { return register_value(L0_magic_number_1); } + intptr_t magic_number_2() const { return saved_args_base()[-1]; } +#endif //ASSERT + + public: + enum { RETURN_VALUE_PLACEHOLDER = (NOT_DEBUG(0) DEBUG_ONLY(42)) }; + + void verify() const NOT_DEBUG_RETURN; // check for MAGIC_NUMBER, etc. + + static void generate_ricochet_blob(MacroAssembler* _masm, + // output params: + int* bounce_offset, + int* exception_offset, + int* frame_size_in_words); + + static void enter_ricochet_frame(MacroAssembler* _masm, + Register recv_reg, + Register argv_reg, + address return_handler); + + static void leave_ricochet_frame(MacroAssembler* _masm, + Register recv_reg, + Register new_sp_reg, + Register sender_pc_reg); + + static RicochetFrame* from_frame(const frame& fr) { + RicochetFrame* rf = new RicochetFrame(fr); + rf->verify(); + return rf; + } + + static void verify_clean(MacroAssembler* _masm) NOT_DEBUG_RETURN; +}; + +// Additional helper methods for MethodHandles code generation: +public: + static void load_klass_from_Class(MacroAssembler* _masm, Register klass_reg, Register temp_reg, Register temp2_reg); + static void load_conversion_vminfo(MacroAssembler* _masm, Address conversion_field_addr, Register reg); + static void extract_conversion_vminfo(MacroAssembler* _masm, Register conversion_field_reg, Register reg); + static void extract_conversion_dest_type(MacroAssembler* _masm, Register conversion_field_reg, Register reg); + + static void load_stack_move(MacroAssembler* _masm, + Address G3_amh_conversion, + Register G5_stack_move); + + static void insert_arg_slots(MacroAssembler* _masm, + RegisterOrConstant arg_slots, + Register argslot_reg, + Register temp_reg, Register temp2_reg, Register temp3_reg); + + static void remove_arg_slots(MacroAssembler* _masm, + RegisterOrConstant arg_slots, + Register argslot_reg, + Register temp_reg, Register temp2_reg, Register temp3_reg); + + static void push_arg_slots(MacroAssembler* _masm, + Register argslot_reg, + RegisterOrConstant slot_count, + Register temp_reg, Register temp2_reg); + + static void move_arg_slots_up(MacroAssembler* _masm, + Register bottom_reg, // invariant + Address top_addr, // can use temp_reg + RegisterOrConstant positive_distance_in_slots, + Register temp_reg, Register temp2_reg); + + static void move_arg_slots_down(MacroAssembler* _masm, + Address bottom_addr, // can use temp_reg + Register top_reg, // invariant + RegisterOrConstant negative_distance_in_slots, + Register temp_reg, Register temp2_reg); + + static void move_typed_arg(MacroAssembler* _masm, + BasicType type, bool is_element, + Address value_src, Address slot_dest, + Register temp_reg); + + static void move_return_value(MacroAssembler* _masm, BasicType type, + Address return_slot); + + static void verify_argslot(MacroAssembler* _masm, Register argslot_reg, + Register temp_reg, + const char* error_message) NOT_DEBUG_RETURN; + + static void verify_argslots(MacroAssembler* _masm, + RegisterOrConstant argslot_count, + Register argslot_reg, + Register temp_reg, + Register temp2_reg, + bool negate_argslot, + const char* error_message) NOT_DEBUG_RETURN; + + static void verify_stack_move(MacroAssembler* _masm, + RegisterOrConstant arg_slots, + int direction) NOT_DEBUG_RETURN; + + static void verify_klass(MacroAssembler* _masm, + Register obj_reg, KlassHandle klass, + Register temp_reg, Register temp2_reg, + const char* error_message = "wrong klass") NOT_DEBUG_RETURN; + + static void verify_method_handle(MacroAssembler* _masm, Register mh_reg, + Register temp_reg, Register temp2_reg) { + verify_klass(_masm, mh_reg, SystemDictionaryHandles::MethodHandle_klass(), + temp_reg, temp2_reg, + "reference is a MH"); + } + + static void trace_method_handle(MacroAssembler* _masm, const char* adaptername) PRODUCT_RETURN;