| /* |
| * Copyright (c) 2000, 2016, 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. |
| * |
| */ |
| |
| #ifndef SHARE_VM_C1_C1_FRAMEMAP_HPP |
| #define SHARE_VM_C1_C1_FRAMEMAP_HPP |
| |
| #include "asm/assembler.hpp" |
| #include "c1/c1_Defs.hpp" |
| #include "c1/c1_LIR.hpp" |
| #include "code/vmreg.hpp" |
| #include "memory/allocation.hpp" |
| #include "runtime/frame.hpp" |
| #include "runtime/synchronizer.hpp" |
| #include "utilities/globalDefinitions.hpp" |
| #include "utilities/macros.hpp" |
| |
| class ciMethod; |
| class CallingConvention; |
| |
| //-------------------------------------------------------- |
| // FrameMap |
| //-------------------------------------------------------- |
| |
| // This class is responsible of mapping items (locals, monitors, spill |
| // slots and registers to their frame location |
| // |
| // The monitors are specified by a consecutive index, although each monitor entry |
| // occupies two words. The monitor_index is 0.._num_monitors |
| // The spill index is similar to local index; it is in range 0..(open) |
| // |
| // The CPU registers are mapped using a fixed table; register with number 0 |
| // is the most used one. |
| |
| |
| // stack grow direction --> SP |
| // +----------+---+----------+-------+------------------------+-----+ |
| // |arguments | x | monitors | spill | reserved argument area | ABI | |
| // +----------+---+----------+-------+------------------------+-----+ |
| // |
| // x = ABI area (SPARC) or return adress and link (i486) |
| // ABI = ABI area (SPARC) or nothing (i486) |
| |
| |
| class LIR_OprDesc; |
| typedef LIR_OprDesc* LIR_Opr; |
| |
| |
| class FrameMap : public CompilationResourceObj { |
| public: |
| enum { |
| nof_cpu_regs = pd_nof_cpu_regs_frame_map, |
| nof_fpu_regs = pd_nof_fpu_regs_frame_map, |
| |
| nof_cpu_regs_reg_alloc = pd_nof_cpu_regs_reg_alloc, |
| nof_fpu_regs_reg_alloc = pd_nof_fpu_regs_reg_alloc, |
| |
| max_nof_caller_save_cpu_regs = pd_nof_caller_save_cpu_regs_frame_map, |
| nof_caller_save_fpu_regs = pd_nof_caller_save_fpu_regs_frame_map, |
| |
| spill_slot_size_in_bytes = 4 |
| }; |
| |
| #include CPU_HEADER(c1_FrameMap) |
| |
| friend class LIR_OprDesc; |
| |
| private: |
| static bool _init_done; |
| static Register _cpu_rnr2reg [nof_cpu_regs]; |
| static int _cpu_reg2rnr [nof_cpu_regs]; |
| |
| static LIR_Opr _caller_save_cpu_regs [max_nof_caller_save_cpu_regs]; |
| static LIR_Opr _caller_save_fpu_regs [nof_caller_save_fpu_regs]; |
| |
| int _framesize; |
| int _argcount; |
| int _num_monitors; |
| int _num_spills; |
| int _reserved_argument_area_size; |
| int _oop_map_arg_count; |
| |
| CallingConvention* _incoming_arguments; |
| intArray* _argument_locations; |
| |
| void check_spill_index (int spill_index) const { assert(spill_index >= 0, "bad index"); } |
| void check_monitor_index (int monitor_index) const { assert(monitor_index >= 0 && |
| monitor_index < _num_monitors, "bad index"); } |
| |
| static Register cpu_rnr2reg (int rnr) { |
| assert(_init_done, "tables not initialized"); |
| debug_only(cpu_range_check(rnr);) |
| return _cpu_rnr2reg[rnr]; |
| } |
| |
| static int cpu_reg2rnr (Register reg) { |
| assert(_init_done, "tables not initialized"); |
| debug_only(cpu_range_check(reg->encoding());) |
| return _cpu_reg2rnr[reg->encoding()]; |
| } |
| |
| static void map_register(int rnr, Register reg) { |
| debug_only(cpu_range_check(rnr);) |
| debug_only(cpu_range_check(reg->encoding());) |
| _cpu_rnr2reg[rnr] = reg; |
| _cpu_reg2rnr[reg->encoding()] = rnr; |
| } |
| |
| void update_reserved_argument_area_size (int size) { |
| assert(size >= 0, "check"); |
| _reserved_argument_area_size = MAX2(_reserved_argument_area_size, size); |
| } |
| |
| protected: |
| #ifndef PRODUCT |
| static void cpu_range_check (int rnr) { assert(0 <= rnr && rnr < nof_cpu_regs, "cpu register number is too big"); } |
| static void fpu_range_check (int rnr) { assert(0 <= rnr && rnr < nof_fpu_regs, "fpu register number is too big"); } |
| #endif |
| |
| |
| ByteSize sp_offset_for_monitor_base(const int idx) const; |
| |
| Address make_new_address(ByteSize sp_offset) const; |
| |
| ByteSize sp_offset_for_slot(const int idx) const; |
| ByteSize sp_offset_for_double_slot(const int idx) const; |
| ByteSize sp_offset_for_spill(const int idx) const; |
| ByteSize sp_offset_for_monitor_lock(int monitor_index) const; |
| ByteSize sp_offset_for_monitor_object(int monitor_index) const; |
| |
| VMReg sp_offset2vmreg(ByteSize offset) const; |
| |
| // platform dependent hook used to check that frame is properly |
| // addressable on the platform. Used by sparc to verify that all |
| // stack addresses are expressable in a simm13. |
| bool validate_frame(); |
| |
| static LIR_Opr map_to_opr(BasicType type, VMRegPair* reg, bool incoming); |
| |
| public: |
| // Opr representing the stack_pointer on this platform |
| static LIR_Opr stack_pointer(); |
| |
| // JSR 292 |
| static LIR_Opr method_handle_invoke_SP_save_opr(); |
| |
| static BasicTypeArray* signature_type_array_for(const ciMethod* method); |
| |
| // for outgoing calls, these also update the reserved area to |
| // include space for arguments and any ABI area. |
| CallingConvention* c_calling_convention(const BasicTypeArray* signature); |
| CallingConvention* java_calling_convention(const BasicTypeArray* signature, bool outgoing); |
| |
| // deopt support |
| ByteSize sp_offset_for_orig_pc() { return sp_offset_for_monitor_base(_num_monitors); } |
| |
| static LIR_Opr as_opr(Register r) { |
| return LIR_OprFact::single_cpu(cpu_reg2rnr(r)); |
| } |
| static LIR_Opr as_oop_opr(Register r) { |
| return LIR_OprFact::single_cpu_oop(cpu_reg2rnr(r)); |
| } |
| |
| static LIR_Opr as_metadata_opr(Register r) { |
| return LIR_OprFact::single_cpu_metadata(cpu_reg2rnr(r)); |
| } |
| |
| FrameMap(ciMethod* method, int monitors, int reserved_argument_area_size); |
| bool finalize_frame(int nof_slots); |
| |
| int reserved_argument_area_size () const { return _reserved_argument_area_size; } |
| int framesize () const { assert(_framesize != -1, "hasn't been calculated"); return _framesize; } |
| ByteSize framesize_in_bytes () const { return in_ByteSize(framesize() * 4); } |
| int num_monitors () const { return _num_monitors; } |
| int num_spills () const { assert(_num_spills >= 0, "not set"); return _num_spills; } |
| int argcount () const { assert(_argcount >= 0, "not set"); return _argcount; } |
| |
| int oop_map_arg_count() const { return _oop_map_arg_count; } |
| |
| CallingConvention* incoming_arguments() const { return _incoming_arguments; } |
| |
| // convenience routines |
| Address address_for_slot(int index, int sp_adjust = 0) const { |
| return make_new_address(sp_offset_for_slot(index) + in_ByteSize(sp_adjust)); |
| } |
| Address address_for_double_slot(int index, int sp_adjust = 0) const { |
| return make_new_address(sp_offset_for_double_slot(index) + in_ByteSize(sp_adjust)); |
| } |
| Address address_for_monitor_lock(int monitor_index) const { |
| return make_new_address(sp_offset_for_monitor_lock(monitor_index)); |
| } |
| Address address_for_monitor_object(int monitor_index) const { |
| return make_new_address(sp_offset_for_monitor_object(monitor_index)); |
| } |
| |
| // Creates Location describing desired slot and returns it via pointer |
| // to Location object. Returns true if the stack frame offset was legal |
| // (as defined by Location::legal_offset_in_bytes()), false otherwise. |
| // Do not use the returned location if this returns false. |
| bool location_for_sp_offset(ByteSize byte_offset_from_sp, |
| Location::Type loc_type, Location* loc) const; |
| |
| bool location_for_monitor_lock (int monitor_index, Location* loc) const { |
| return location_for_sp_offset(sp_offset_for_monitor_lock(monitor_index), Location::normal, loc); |
| } |
| bool location_for_monitor_object(int monitor_index, Location* loc) const { |
| return location_for_sp_offset(sp_offset_for_monitor_object(monitor_index), Location::oop, loc); |
| } |
| bool locations_for_slot (int index, Location::Type loc_type, |
| Location* loc, Location* second = NULL) const; |
| |
| VMReg slot_regname(int index) const { |
| return sp_offset2vmreg(sp_offset_for_slot(index)); |
| } |
| VMReg monitor_object_regname(int monitor_index) const { |
| return sp_offset2vmreg(sp_offset_for_monitor_object(monitor_index)); |
| } |
| VMReg regname(LIR_Opr opr) const; |
| |
| static LIR_Opr caller_save_cpu_reg_at(int i) { |
| assert(i >= 0 && i < max_nof_caller_save_cpu_regs, "out of bounds"); |
| return _caller_save_cpu_regs[i]; |
| } |
| |
| static LIR_Opr caller_save_fpu_reg_at(int i) { |
| assert(i >= 0 && i < nof_caller_save_fpu_regs, "out of bounds"); |
| return _caller_save_fpu_regs[i]; |
| } |
| |
| static void initialize(); |
| }; |
| |
| // CallingConvention |
| //-------------------------------------------------------- |
| |
| class CallingConvention: public ResourceObj { |
| private: |
| LIR_OprList* _args; |
| int _reserved_stack_slots; |
| |
| public: |
| CallingConvention (LIR_OprList* args, int reserved_stack_slots) |
| : _args(args) |
| , _reserved_stack_slots(reserved_stack_slots) {} |
| |
| LIR_OprList* args() { return _args; } |
| |
| LIR_Opr at(int i) const { return _args->at(i); } |
| int length() const { return _args->length(); } |
| |
| // Indicates number of real frame slots used by arguments passed on stack. |
| int reserved_stack_slots() const { return _reserved_stack_slots; } |
| |
| #ifndef PRODUCT |
| void print () const { |
| for (int i = 0; i < length(); i++) { |
| at(i)->print(); |
| } |
| } |
| #endif // PRODUCT |
| }; |
| |
| #endif // SHARE_VM_C1_C1_FRAMEMAP_HPP |