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/*
* Copyright (c) 2016, 2022, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2016, 2017 SAP SE. 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 CPU_S390_INTERP_MASM_S390_HPP
#define CPU_S390_INTERP_MASM_S390_HPP
#include "asm/macroAssembler.hpp"
#include "interpreter/invocationCounter.hpp"
// This file specializes the assembler with interpreter-specific macros.
class InterpreterMacroAssembler: public MacroAssembler {
protected:
// Interpreter specific version of call_VM_base().
virtual void call_VM_leaf_base(address entry_point);
virtual void call_VM_leaf_base(address entry_point, bool allow_relocation);
virtual void call_VM_base(Register oop_result,
Register last_java_sp,
address entry_point,
bool check_exceptions);
virtual void call_VM_base(Register oop_result,
Register last_java_sp,
address entry_point,
bool allow_relocation,
bool check_exceptions);
// Base routine for all dispatches.
void dispatch_base(TosState state, address* table, bool generate_poll = false);
public:
InterpreterMacroAssembler(CodeBuffer* c)
: MacroAssembler(c) {}
virtual void check_and_handle_popframe(Register java_thread);
virtual void check_and_handle_earlyret(Register java_thread);
void jump_to_entry(address entry, Register Rscratch);
virtual void load_earlyret_value(TosState state);
static const Address l_tmp;
static const Address d_tmp;
// Handy address generation macros.
#define thread_(field_name) Address(Z_thread, JavaThread::field_name ## _offset())
#define method_(field_name) Address(Z_method, Method::field_name ## _offset())
#define method2_(Rmethod, field_name) Address(Rmethod, Method::field_name ## _offset())
// Helper routine for frame allocation/deallocation.
// Compute the delta by which the caller's SP has to
// be adjusted to accommodate for the non-argument locals.
void compute_extra_locals_size_in_bytes(Register args_size, Register locals_size, Register delta);
// dispatch routines
void dispatch_prolog(TosState state, int step = 0);
void dispatch_epilog(TosState state, int step = 0);
void dispatch_only(TosState state, bool generate_poll = false);
// Dispatch normal table via Z_bytecode (assume Z_bytecode is loaded already).
void dispatch_only_normal(TosState state);
void dispatch_normal(TosState state);
void dispatch_next(TosState state, int step = 0, bool generate_poll = false);
void dispatch_next_noverify_oop(TosState state, int step = 0);
void dispatch_via(TosState state, address* table);
void narrow(Register result, Register ret_type);
// Jump to an invoked target.
void prepare_to_jump_from_interpreted(Register method);
void jump_from_interpreted(Register method, Register temp);
// Removes the current activation (incl. unlocking of monitors).
// Additionally this code is used for earlyReturn in which case we
// want to skip throwing an exception and installing an exception.
void remove_activation(TosState state,
Register return_pc,
bool throw_monitor_exception = true,
bool install_monitor_exception = true,
bool notify_jvmti = true);
public:
// Super call_VM calls - correspond to MacroAssembler::call_VM(_leaf) calls.
void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2);
void super_call_VM(Register thread_cache, Register oop_result, Register last_java_sp,
address entry_point, Register arg_1, Register arg_2, bool check_exception = true);
// Generate a subtype check: branch to ok_is_subtype if sub_klass is
// a subtype of super_klass. Blows registers tmp1, tmp2 and tmp3.
void gen_subtype_check(Register sub_klass, Register super_klass, Register tmp1, Register tmp2, Label &ok_is_subtype);
void get_cache_and_index_at_bcp(Register cache, Register cpe_offset, int bcp_offset, size_t index_size = sizeof(u2));
void get_cache_and_index_and_bytecode_at_bcp(Register cache, Register cpe_offset, Register bytecode,
int byte_no, int bcp_offset, size_t index_size = sizeof(u2));
void get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset, size_t index_size = sizeof(u2));
void get_cache_index_at_bcp(Register index, int bcp_offset, size_t index_size = sizeof(u2));
void load_resolved_reference_at_index(Register result, Register index);
// load cpool->resolved_klass_at(index)
void load_resolved_klass_at_offset(Register cpool, Register offset, Register iklass);
void load_resolved_method_at_index(int byte_no, Register cache, Register cpe_offset, Register method);
// Pop topmost element from stack. It just disappears. Useful if
// consumed previously by access via stackTop().
void popx(int len);
void pop_i() { popx(1); }
void pop_ptr() { popx(1); }
void pop_l() { popx(2); }
void pop_f() { popx(1); }
void pop_d() { popx(2); }
// Get Address object of stack top. No checks. No pop.
// Purpose: provide address of stack operand to exploit reg-mem operations.
// Avoid RISC-like mem2reg - reg-reg-op sequence.
Address stackTop();
// Helpers for expression stack.
void pop_i( Register r);
void pop_ptr( Register r);
void pop_l( Register r);
void pop_f(FloatRegister f);
void pop_d(FloatRegister f);
void push_i( Register r = Z_tos);
void push_ptr( Register r = Z_tos);
void push_l( Register r = Z_tos);
void push_f(FloatRegister f = Z_ftos);
void push_d(FloatRegister f = Z_ftos);
// Helpers for swap and dup.
void load_ptr(int n, Register val);
void store_ptr(int n, Register val);
void pop (TosState state); // transition vtos -> state
void push(TosState state); // transition state -> vtos
void empty_expression_stack(void);
#ifdef ASSERT
void verify_sp(Register Rsp, Register Rtemp);
void verify_esp(Register Resp, Register Rtemp); // Verify that Resp points to a word in the operand stack.
#endif // ASSERT
public:
void if_cmp(Condition cc, bool ptr_compare);
// Accessors to the template interpreter state.
void asm_assert_ijava_state_magic(Register tmp) NOT_DEBUG_RETURN;
void save_bcp();
void restore_bcp();
void save_esp();
void restore_esp();
void get_monitors(Register reg);
void save_monitors(Register reg);
void get_mdp(Register mdp);
void save_mdp(Register mdp);
// Values that are only read (besides initialization).
void restore_locals();
void get_method(Register reg);
// Load values from bytecode stream:
enum signedOrNot { Signed, Unsigned };
enum setCCOrNot { set_CC, dont_set_CC };
void get_2_byte_integer_at_bcp(Register Rdst,
int bcp_offset,
signedOrNot is_signed );
void get_4_byte_integer_at_bcp(Register Rdst,
int bcp_offset,
setCCOrNot should_set_CC = dont_set_CC);
// common code
void field_offset_at(int n, Register tmp, Register dest, Register base);
int field_offset_at(Register object, address bcp, int offset);
void fast_iaaccess(int n, address bcp);
void fast_iaputfield(address bcp, bool do_store_check);
void index_check(Register array, Register index, int index_shift, Register tmp, Register res);
void index_check_without_pop(Register array, Register index, int index_shift, Register tmp, Register res);
void get_constant_pool(Register Rdst);
void get_constant_pool_cache(Register Rdst);
void get_cpool_and_tags(Register Rcpool, Register Rtags);
void is_a(Label& L);
// --------------------------------------------------
void unlock_if_synchronized_method(TosState state, bool throw_monitor_exception = true, bool install_monitor_exception = true);
void add_monitor_to_stack(bool stack_is_empty,
Register Rtemp,
Register Rtemp2,
Register Rtemp3);
void access_local_int(Register index, Register dst);
void access_local_ptr(Register index, Register dst);
void access_local_long(Register index, Register dst);
void access_local_float(Register index, FloatRegister dst);
void access_local_double(Register index, FloatRegister dst);
#ifdef ASSERT
void check_for_regarea_stomp(Register Rindex, int offset, Register Rlimit, Register Rscratch, Register Rscratch1);
#endif // ASSERT
void store_local_int(Register index, Register src);
void store_local_ptr(Register index, Register src);
void store_local_long(Register index, Register src);
void store_local_float(Register index, FloatRegister src);
void store_local_double(Register index, FloatRegister src);
Address first_local_in_stack();
static int top_most_monitor_byte_offset(); // Offset in bytes to top of monitor block.
Address top_most_monitor();
void compute_stack_base(Register Rdest);
enum LoadOrStore { load, store };
void static_iload_or_store(int which_local, LoadOrStore direction, Register Rtmp);
void static_aload_or_store(int which_local, LoadOrStore direction, Register Rtmp);
void static_dload_or_store(int which_local, LoadOrStore direction);
void static_iinc( int which_local, jint increment, Register Rtmp, Register Rtmp2);
void get_method_counters(Register Rmethod, Register Rcounters, Label& skip);
void increment_invocation_counter(Register Rcounters, Register RctrSum);
void increment_backedge_counter(Register Rcounters, Register RctrSum);
void test_backedge_count_for_osr(Register backedge_count, Register branch_bcp, Register Rtmp);
void record_static_call_in_profile(Register Rentry, Register Rtmp);
void record_receiver_call_in_profile(Register Rklass, Register Rentry, Register Rtmp);
// Object locking
void lock_object (Register lock_reg, Register obj_reg);
void unlock_object(Register lock_reg, Register obj_reg=noreg);
// Interpreter profiling operations
void set_method_data_pointer_for_bcp();
void test_method_data_pointer(Register mdp, Label& zero_continue);
void verify_method_data_pointer();
void set_mdp_data_at(Register mdp_in, int constant, Register value);
void increment_mdp_data_at(Register mdp_in, int constant,
Register tmp = Z_R1_scratch, bool decrement = false);
void increment_mask_and_jump(Address counter_addr,
int increment, Address mask,
Register scratch, bool preloaded,
branch_condition cond, Label* where);
void set_mdp_flag_at(Register mdp_in, int flag_constant);
void test_mdp_data_at(Register mdp_in, int offset, Register value,
Register test_value_out,
Label& not_equal_continue);
void record_klass_in_profile(Register receiver, Register mdp,
Register reg2, bool is_virtual_call);
void record_klass_in_profile_helper(Register receiver, Register mdp,
Register reg2, int start_row,
Label& done, bool is_virtual_call);
void update_mdp_by_offset(Register mdp_in, int offset_of_offset);
void update_mdp_by_offset(Register mdp_in, Register dataidx, int offset_of_disp);
void update_mdp_by_constant(Register mdp_in, int constant);
void update_mdp_for_ret(Register return_bci);
void profile_taken_branch(Register mdp, Register bumped_count);
void profile_not_taken_branch(Register mdp);
void profile_call(Register mdp);
void profile_final_call(Register mdp);
void profile_virtual_call(Register receiver, Register mdp,
Register scratch2,
bool receiver_can_be_null = false);
void profile_ret(Register return_bci, Register mdp);
void profile_null_seen(Register mdp);
void profile_typecheck(Register mdp, Register klass, Register scratch);
void profile_typecheck_failed(Register mdp, Register tmp);
void profile_switch_default(Register mdp);
void profile_switch_case(Register index_in_scratch, Register mdp,
Register scratch1, Register scratch2);
void profile_obj_type(Register obj, Address mdo_addr, Register klass, bool cmp_done = false);
void profile_arguments_type(Register mdp, Register callee, Register tmp, bool is_virtual);
void profile_return_type(Register mdp, Register ret, Register tmp);
void profile_parameters_type(Register mdp, Register tmp1, Register tmp2);
// Debugging
void verify_oop(Register reg, TosState state = atos); // Only if +VerifyOops && state == atos.
void verify_oop_or_return_address(Register reg, Register rtmp); // for astore
void verify_FPU(int stack_depth, TosState state = ftos);
// JVMTI helpers
void skip_if_jvmti_mode(Label &Lskip, Register Rscratch = Z_R0);
// support for JVMTI/Dtrace
typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode;
void notify_method_entry();
void notify_method_exit(bool native_method, TosState state, NotifyMethodExitMode mode);
// Pop the topmost TOP_IJAVA_FRAME and set it's sender_sp as new Z_SP.
// The return pc is loaded into the Register return_pc.
void pop_interpreter_frame(Register return_pc, Register tmp1, Register tmp2);
};
#endif // CPU_S390_INTERP_MASM_S390_HPP
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