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* Copyright (c) 2002, 2017, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2012, 2017 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* published by the Free Software Foundation.
*
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* 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).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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#ifndef CPU_PPC_VM_INTERP_MASM_PPC_HPP
#define CPU_PPC_VM_INTERP_MASM_PPC_HPP
#include "asm/macroAssembler.hpp"
#include "interpreter/invocationCounter.hpp"
// This file specializes the assembler with interpreter-specific macros.
class InterpreterMacroAssembler: public MacroAssembler {
public:
InterpreterMacroAssembler(CodeBuffer* code) : MacroAssembler(code) {}
void null_check_throw(Register a, int offset, Register temp_reg);
void jump_to_entry(address entry, Register Rscratch);
// Handy address generation macros.
#define thread_(field_name) in_bytes(JavaThread::field_name ## _offset()), R16_thread
#define method_(field_name) in_bytes(Method::field_name ## _offset()), R19_method
virtual void check_and_handle_popframe(Register scratch_reg);
virtual void check_and_handle_earlyret(Register scratch_reg);
// Base routine for all dispatches.
void dispatch_base(TosState state, address* table);
void load_earlyret_value(TosState state, Register Rscratch1);
static const Address l_tmp;
static const Address d_tmp;
// dispatch routines
void dispatch_next(TosState state, int step = 0);
void dispatch_via (TosState state, address* table);
void load_dispatch_table(Register dst, address* table);
void dispatch_Lbyte_code(TosState state, Register bytecode, address* table, bool verify = false);
// Called by shared interpreter generator.
void dispatch_prolog(TosState state, int step = 0);
void dispatch_epilog(TosState state, int step = 0);
// Super call_VM calls - correspond to MacroAssembler::call_VM(_leaf) calls.
void super_call_VM_leaf(Register thread_cache, address entry_point, Register arg_1);
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, Register tmp3, Label &ok_is_subtype);
// Load object from cpool->resolved_references(index).
void load_resolved_reference_at_index(Register result, Register index, Label *is_null = NULL);
// load cpool->resolved_klass_at(index)
void load_resolved_klass_at_offset(Register Rcpool, Register Roffset, Register Rklass);
void load_receiver(Register Rparam_count, Register Rrecv_dst);
// helpers for expression stack
void pop_i( Register r = R17_tos);
void pop_ptr( Register r = R17_tos);
void pop_l( Register r = R17_tos);
void pop_f(FloatRegister f = F15_ftos);
void pop_d(FloatRegister f = F15_ftos );
void push_i( Register r = R17_tos);
void push_ptr( Register r = R17_tos);
void push_l( Register r = R17_tos);
void push_f(FloatRegister f = F15_ftos );
void push_d(FloatRegister f = F15_ftos);
void push_2ptrs(Register first, Register second);
void move_l_to_d(Register l = R17_tos, FloatRegister d = F15_ftos);
void move_d_to_l(FloatRegister d = F15_ftos, Register l = R17_tos);
void pop (TosState state); // transition vtos -> state
void push(TosState state); // transition state -> vtos
void empty_expression_stack(); // Resets both Lesp and SP.
public:
// Load values from bytecode stream:
enum signedOrNot { Signed, Unsigned };
enum setCCOrNot { set_CC, dont_set_CC };
void get_2_byte_integer_at_bcp(int bcp_offset,
Register Rdst,
signedOrNot is_signed);
void get_4_byte_integer_at_bcp(int bcp_offset,
Register Rdst,
signedOrNot is_signed = Unsigned);
void get_cache_index_at_bcp(Register Rdst, int bcp_offset, size_t index_size);
void get_cache_and_index_at_bcp(Register cache, int bcp_offset, size_t index_size = sizeof(u2));
void get_u4(Register Rdst, Register Rsrc, int offset, signedOrNot is_signed);
// 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_const(Register Rdst);
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 narrow(Register result);
// Java Call Helpers
void call_from_interpreter(Register Rtarget_method, Register Rret_addr, Register Rscratch1, Register Rscratch2);
// --------------------------------------------------
void unlock_if_synchronized_method(TosState state, bool throw_monitor_exception = true,
bool install_monitor_exception = true);
// 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,
bool throw_monitor_exception = true,
bool install_monitor_exception = true);
void merge_frames(Register Rtop_frame_sp, Register return_pc, Register Rscratch1, Register Rscratch2); // merge top frames
void add_monitor_to_stack(bool stack_is_empty, Register Rtemp1, Register Rtemp2);
// Local variable access helpers
void load_local_int(Register Rdst_value, Register Rdst_address, Register Rindex);
void load_local_long(Register Rdst_value, Register Rdst_address, Register Rindex);
void load_local_ptr(Register Rdst_value, Register Rdst_address, Register Rindex);
void load_local_float(FloatRegister Rdst_value, Register Rdst_address, Register Rindex);
void load_local_double(FloatRegister Rdst_value, Register Rdst_address, Register Rindex);
void store_local_int(Register Rvalue, Register Rindex);
void store_local_long(Register Rvalue, Register Rindex);
void store_local_ptr(Register Rvalue, Register Rindex);
void store_local_float(FloatRegister Rvalue, Register Rindex);
void store_local_double(FloatRegister Rvalue, Register Rindex);
// Call VM for std frames
// Special call VM versions that check for exceptions and forward exception
// via short cut (not via expensive forward exception stub).
void check_and_forward_exception(Register Rscratch1, Register Rscratch2);
void call_VM(Register oop_result, address entry_point, bool check_exceptions = true);
void call_VM(Register oop_result, address entry_point, Register arg_1, bool check_exceptions = true);
void call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, bool check_exceptions = true);
void call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, Register arg_3, bool check_exceptions = true);
// Should not be used:
void call_VM(Register oop_result, Register last_java_sp, address entry_point, bool check_exceptions = true) {ShouldNotReachHere();}
void call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, bool check_exceptions = true) {ShouldNotReachHere();}
void call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, Register arg_2, bool check_exceptions = true) {ShouldNotReachHere();}
void call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, Register arg_2, Register arg_3, bool check_exceptions = true) {ShouldNotReachHere();}
Address first_local_in_stack();
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 save_interpreter_state(Register scratch);
void restore_interpreter_state(Register scratch, bool bcp_and_mdx_only = false);
void increment_backedge_counter(const Register Rcounters, Register Rtmp, Register Rtmp2, Register Rscratch);
void test_backedge_count_for_osr(Register backedge_count, Register method_counters, Register target_bcp, Register disp, Register Rtmp);
void record_static_call_in_profile(Register Rentry, Register Rtmp);
void record_receiver_call_in_profile(Register Rklass, Register Rentry, Register Rtmp);
void get_method_counters(Register method, Register Rcounters, Label& skip);
void increment_invocation_counter(Register iv_be_count, Register Rtmp1, Register Rtmp2_r0);
// Object locking
void lock_object (Register lock_reg, Register obj_reg);
void unlock_object(Register lock_reg, bool check_for_exceptions = true);
// Interpreter profiling operations
void set_method_data_pointer_for_bcp();
void test_method_data_pointer(Label& zero_continue);
void verify_method_data_pointer();
void test_invocation_counter_for_mdp(Register invocation_count, Register method_counters, Register Rscratch, Label &profile_continue);
void set_mdp_data_at(int constant, Register value);
void increment_mdp_data_at(int constant, Register counter_addr, Register Rbumped_count, bool decrement = false);
void increment_mdp_data_at(Register counter_addr, Register Rbumped_count, bool decrement = false);
void increment_mdp_data_at(Register reg, int constant, Register scratch, Register Rbumped_count, bool decrement = false);
void set_mdp_flag_at(int flag_constant, Register scratch);
void test_mdp_data_at(int offset, Register value, Label& not_equal_continue, Register test_out);
void update_mdp_by_offset(int offset_of_disp, Register scratch);
void update_mdp_by_offset(Register reg, int offset_of_disp,
Register scratch);
void update_mdp_by_constant(int constant);
void update_mdp_for_ret(TosState state, Register return_bci);
void profile_taken_branch(Register scratch, Register bumped_count);
void profile_not_taken_branch(Register scratch1, Register scratch2);
void profile_call(Register scratch1, Register scratch2);
void profile_final_call(Register scratch1, Register scratch2);
void profile_virtual_call(Register Rreceiver, Register Rscratch1, Register Rscratch2, bool receiver_can_be_null);
void profile_typecheck(Register Rklass, Register Rscratch1, Register Rscratch2);
void profile_typecheck_failed(Register Rscratch1, Register Rscratch2);
void profile_ret(TosState state, Register return_bci, Register scratch1, Register scratch2);
void profile_switch_default(Register scratch1, Register scratch2);
void profile_switch_case(Register index, Register scratch1,Register scratch2, Register scratch3);
void profile_null_seen(Register Rscratch1, Register Rscratch2);
void record_klass_in_profile(Register receiver, Register scratch1, Register scratch2, bool is_virtual_call);
void record_klass_in_profile_helper(Register receiver, Register scratch1, Register scratch2, int start_row, Label& done, bool is_virtual_call);
// Argument and return type profiling.
void profile_obj_type(Register obj, Register mdo_addr_base, RegisterOrConstant mdo_addr_offs, Register tmp, Register tmp2);
void profile_arguments_type(Register callee, Register tmp1, Register tmp2, bool is_virtual);
void profile_return_type(Register ret, Register tmp1, Register tmp2);
void profile_parameters_type(Register tmp1, Register tmp2, Register tmp3, Register tmp4);
// 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);
typedef enum { NotifyJVMTI, SkipNotifyJVMTI } NotifyMethodExitMode;
// Support for jvmdi/jvmpi.
void notify_method_entry();
void notify_method_exit(bool is_native_method, TosState state,
NotifyMethodExitMode mode, bool check_exceptions);
};
#endif // CPU_PPC_VM_INTERP_MASM_PPC_HPP