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https://github.com/openjdk/jdk.git
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324 lines
14 KiB
C++
324 lines
14 KiB
C++
/*
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* Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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// This file specializes the assember with interpreter-specific macros
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REGISTER_DECLARATION( Register, Otos_i , O0); // tos for ints, etc
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REGISTER_DECLARATION( Register, Otos_l , O0); // for longs
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REGISTER_DECLARATION( Register, Otos_l1, O0); // for 1st part of longs
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REGISTER_DECLARATION( Register, Otos_l2, O1); // for 2nd part of longs
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REGISTER_DECLARATION(FloatRegister, Ftos_f , F0); // for floats
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REGISTER_DECLARATION(FloatRegister, Ftos_d , F0); // for doubles
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REGISTER_DECLARATION(FloatRegister, Ftos_d1, F0); // for 1st part of double
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REGISTER_DECLARATION(FloatRegister, Ftos_d2, F1); // for 2nd part of double
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#ifndef DONT_USE_REGISTER_DEFINES
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#define Otos_i O0
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#define Otos_l O0
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#define Otos_l1 O0
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#define Otos_l2 O1
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#define Ftos_f F0
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#define Ftos_d F0
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#define Ftos_d1 F0
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#define Ftos_d2 F1
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#endif // DONT_USE_REGISTER_DEFINES
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class InterpreterMacroAssembler: public MacroAssembler {
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protected:
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#ifndef CC_INTERP
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// Interpreter specific version of call_VM_base
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virtual void call_VM_leaf_base(
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Register java_thread,
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address entry_point,
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int number_of_arguments
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);
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virtual void call_VM_base(
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Register oop_result,
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Register java_thread,
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Register last_java_sp,
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address entry_point,
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int number_of_arguments,
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bool check_exception=true
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);
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virtual void check_and_handle_popframe(Register java_thread);
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virtual void check_and_handle_earlyret(Register java_thread);
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// base routine for all dispatches
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void dispatch_base(TosState state, address* table);
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#endif /* CC_INTERP */
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public:
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InterpreterMacroAssembler(CodeBuffer* c)
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: MacroAssembler(c) {}
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#ifndef CC_INTERP
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virtual void load_earlyret_value(TosState state);
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static const Address l_tmp ;
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static const Address d_tmp ;
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#endif /* CC_INTERP */
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// helper routine for frame allocation/deallocation
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// compute the delta by which the caller's SP has to
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// be adjusted to accomodate for the non-argument
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// locals
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void compute_extra_locals_size_in_bytes(Register args_size, Register locals_size, Register delta);
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#ifndef CC_INTERP
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// dispatch routines
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void dispatch_prolog(TosState state, int step = 0);
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void dispatch_epilog(TosState state, int step = 0);
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void dispatch_only(TosState state);
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void dispatch_normal(TosState state);
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void dispatch_next(TosState state, int step = 0);
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void dispatch_next_noverify_oop(TosState state, int step = 0);
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void dispatch_via (TosState state, address* table);
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// Removes the current activation (incl. unlocking of monitors).
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// Additionally this code is used for earlyReturn in which case we
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// want to skip throwing an exception and installing an exception.
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void remove_activation(TosState state,
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bool throw_monitor_exception = true,
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bool install_monitor_exception = true);
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protected:
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void dispatch_Lbyte_code(TosState state, address* table, int bcp_incr = 0, bool verify = true);
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#endif /* CC_INTERP */
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public:
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// Super call_VM calls - correspond to MacroAssembler::call_VM(_leaf) calls
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void super_call_VM(Register thread_cache,
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Register oop_result,
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Register last_java_sp,
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address entry_point,
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Register arg_1,
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Register arg_2,
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bool check_exception = true);
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#ifndef CC_INTERP
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void super_call_VM_leaf(Register thread_cache, address entry_point, Register arg_1, Register arg_2);
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// Generate a subtype check: branch to ok_is_subtype if sub_klass is
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// a subtype of super_klass. Blows registers tmp1, tmp2 and tmp3.
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void gen_subtype_check( Register sub_klass, Register super_klass, Register tmp1, Register tmp2, Register tmp3, Label &ok_is_subtype );
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// helpers for tossing exceptions
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void throw_if_not_1_icc( Condition ok_condition, Label& ok );
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void throw_if_not_1_xcc( Condition ok_condition, Label& ok );
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void throw_if_not_1_x ( Condition ok_condition, Label& ok ); // chooses icc or xcc based on _LP64
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void throw_if_not_2( address throw_entry_point, Register Rscratch, Label& ok);
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void throw_if_not_icc( Condition ok_condition, address throw_entry_point, Register Rscratch );
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void throw_if_not_xcc( Condition ok_condition, address throw_entry_point, Register Rscratch );
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void throw_if_not_x ( Condition ok_condition, address throw_entry_point, Register Rscratch );
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// helpers for expression stack
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void pop_i( Register r = Otos_i);
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void pop_ptr( Register r = Otos_i, Register scratch = O4);
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void pop_l( Register r = Otos_l1);
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// G4_scratch and Lscratch are used at call sites!!
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void pop_f(FloatRegister f = Ftos_f, Register scratch = G1_scratch);
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void pop_d(FloatRegister f = Ftos_d1, Register scratch = G1_scratch);
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void push_i( Register r = Otos_i);
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void push_ptr( Register r = Otos_i);
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void push_l( Register r = Otos_l1);
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void push_f(FloatRegister f = Ftos_f);
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void push_d(FloatRegister f = Ftos_d1);
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void pop (TosState state); // transition vtos -> state
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void push(TosState state); // transition state -> vtos
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void empty_expression_stack(); // resets both Lesp and SP
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#ifdef ASSERT
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void verify_sp(Register Rsp, Register Rtemp);
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void verify_esp(Register Resp); // verify that Lesp points to a word in the temp stack
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#endif // ASSERT
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public:
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void if_cmp(Condition cc, bool ptr_compare);
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// Load values from bytecode stream:
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enum signedOrNot { Signed, Unsigned };
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enum setCCOrNot { set_CC, dont_set_CC };
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void get_2_byte_integer_at_bcp( int bcp_offset,
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Register Rtmp,
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Register Rdst,
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signedOrNot is_signed,
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setCCOrNot should_set_CC = dont_set_CC );
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void get_4_byte_integer_at_bcp( int bcp_offset,
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Register Rtmp,
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Register Rdst,
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setCCOrNot should_set_CC = dont_set_CC );
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void get_cache_and_index_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2));
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void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2));
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void get_cache_index_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2));
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// common code
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void field_offset_at(int n, Register tmp, Register dest, Register base);
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int field_offset_at(Register object, address bcp, int offset);
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void fast_iaaccess(int n, address bcp);
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void fast_iagetfield(address bcp);
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void fast_iaputfield(address bcp, bool do_store_check );
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void index_check(Register array, Register index, int index_shift, Register tmp, Register res);
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void index_check_without_pop(Register array, Register index, int index_shift, Register tmp, Register res);
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void get_constant_pool(Register Rdst);
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void get_constant_pool_cache(Register Rdst);
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void get_cpool_and_tags(Register Rcpool, Register Rtags);
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void is_a(Label& L);
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// Load compiled (i2c) or interpreter entry and call from interpreted
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void call_from_interpreter(Register target, Register scratch, Register Rret);
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// --------------------------------------------------
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void unlock_if_synchronized_method(TosState state, bool throw_monitor_exception = true, bool install_monitor_exception = true);
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void add_monitor_to_stack( bool stack_is_empty,
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Register Rtemp,
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Register Rtemp2 );
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// Load/store aligned in _LP64 but unaligned otherwise
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// These only apply to the Interpreter expression stack and locals!
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void load_unaligned_double(Register r1, int offset, FloatRegister d);
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void store_unaligned_double(FloatRegister d, Register r1, int offset );
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// Load/store aligned in _LP64 but unaligned otherwise
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void load_unaligned_long(Register r1, int offset, Register d);
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void store_unaligned_long(Register d, Register r1, int offset );
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void access_local_int( Register index, Register dst );
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void access_local_ptr( Register index, Register dst );
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void access_local_returnAddress( Register index, Register dst );
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void access_local_long( Register index, Register dst );
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void access_local_float( Register index, FloatRegister dst );
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void access_local_double( Register index, FloatRegister dst );
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#ifdef ASSERT
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void check_for_regarea_stomp( Register Rindex, int offset, Register Rlimit, Register Rscratch, Register Rscratch1);
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#endif // ASSERT
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void store_local_int( Register index, Register src );
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void store_local_ptr( Register index, Register src );
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void store_local_ptr( int n, Register src );
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void store_local_long( Register index, Register src );
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void store_local_float( Register index, FloatRegister src );
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void store_local_double( Register index, FloatRegister src );
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// Helpers for swap and dup
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void load_ptr(int n, Register val);
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void store_ptr(int n, Register val);
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// Helper for getting receiver in register.
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void load_receiver(Register param_count, Register recv);
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static int top_most_monitor_byte_offset(); // offset in bytes to top of monitor block
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Address top_most_monitor();
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void compute_stack_base( Register Rdest );
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#endif /* CC_INTERP */
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void increment_invocation_counter( Register Rtmp, Register Rtmp2 );
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void increment_backedge_counter( Register Rtmp, Register Rtmp2 );
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#ifndef CC_INTERP
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void test_backedge_count_for_osr( Register backedge_count, Register branch_bcp, Register Rtmp );
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#endif /* CC_INTERP */
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// Object locking
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void lock_object (Register lock_reg, Register obj_reg);
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void unlock_object(Register lock_reg);
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#ifndef CC_INTERP
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// Interpreter profiling operations
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void set_method_data_pointer() { set_method_data_pointer_offset(noreg); }
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void set_method_data_pointer_for_bcp();
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void set_method_data_pointer_offset(Register mdi_reg);
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void test_method_data_pointer(Label& zero_continue);
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void verify_method_data_pointer();
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void test_invocation_counter_for_mdp(Register invocation_count, Register cur_bcp, Register Rtmp, Label &profile_continue);
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void set_mdp_data_at(int constant, Register value);
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void increment_mdp_data_at(Address counter, Register bumped_count,
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bool decrement = false);
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void increment_mdp_data_at(int constant, Register bumped_count,
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bool decrement = false);
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void increment_mdp_data_at(Register reg, int constant,
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Register bumped_count, Register scratch2,
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bool decrement = false);
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void set_mdp_flag_at(int flag_constant, Register scratch);
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void test_mdp_data_at(int offset, Register value, Label& not_equal_continue,
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Register scratch);
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void record_klass_in_profile(Register receiver, Register scratch, bool is_virtual_call);
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void record_klass_in_profile_helper(Register receiver, Register scratch,
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int start_row, Label& done, bool is_virtual_call);
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void update_mdp_by_offset(int offset_of_disp, Register scratch);
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void update_mdp_by_offset(Register reg, int offset_of_disp,
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Register scratch);
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void update_mdp_by_constant(int constant);
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void update_mdp_for_ret(TosState state, Register return_bci);
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void profile_taken_branch(Register scratch, Register bumped_count);
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void profile_not_taken_branch(Register scratch);
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void profile_call(Register scratch);
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void profile_final_call(Register scratch);
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void profile_virtual_call(Register receiver, Register scratch, bool receiver_can_be_null = false);
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void profile_ret(TosState state, Register return_bci, Register scratch);
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void profile_null_seen(Register scratch);
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void profile_typecheck(Register klass, Register scratch);
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void profile_typecheck_failed(Register scratch);
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void profile_switch_default(Register scratch);
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void profile_switch_case(Register index,
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Register scratch1,
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Register scratch2,
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Register scratch3);
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// Debugging
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void interp_verify_oop(Register reg, TosState state, const char * file, int line); // only if +VerifyOops && state == atos
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void verify_oop_or_return_address(Register reg, Register rtmp); // for astore
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void verify_FPU(int stack_depth, TosState state = ftos); // only if +VerifyFPU && (state == ftos || state == dtos)
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#endif /* CC_INTERP */
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// support for JVMTI/Dtrace
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typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode;
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void notify_method_entry();
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void notify_method_exit(
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bool save_result, TosState state, NotifyMethodExitMode mode);
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void save_return_value(TosState state, bool is_native_call);
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void restore_return_value(TosState state, bool is_native_call);
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};
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