jdk8-mips64-public/hotspot: src/cpu/mips/vm/macroAssembler

src/cpu/mips/vm/macroAssembler_mips.hpp@0b27fc8adf1b (annotated)

src/cpu/mips/vm/macroAssembler_mips.hpp

Fri, 27 Sep 2019 11:31:13 +0800

author: huangjia
date: Fri, 27 Sep 2019 11:31:13 +0800
changeset 9705: 0b27fc8adf1b
parent 9576: 1cee9b02d46f
child 9932: 86ea9a02a717
permissions: -rw-r--r--

#10071 MIPS Port of 8176100: [REDO][REDO] G1 Needs pre barrier on dereference of weak JNI handles
Summary: runtime/jni/CallWithJNIWeak/test.sh runtime/jni/ReturnJNIWeak/test.sh crash
Reviewed-by: aoqi

 /*
  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2015, 2019, Loongson Technology. 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_MIPS_VM_MACROASSEMBLER_MIPS_HPP
 #define CPU_MIPS_VM_MACROASSEMBLER_MIPS_HPP
 #include "asm/assembler.hpp"
 #include "utilities/macros.hpp"
 #include "runtime/rtmLocking.hpp"
 // MacroAssembler extends Assembler by frequently used macros.
 //
 // Instructions for which a 'better' code sequence exists depending
 // on arguments should also go in here.
 class MacroAssembler: public Assembler {
   friend class LIR_Assembler;
   friend class Runtime1;      // as_Address()
  protected:
   Address as_Address(AddressLiteral adr);
   Address as_Address(ArrayAddress adr);
   // Support for VM calls
   //
   // This is the base routine called by the different versions of call_VM_leaf. The interpreter
   // may customize this version by overriding it for its purposes (e.g., to save/restore
   // additional registers when doing a VM call).
 #ifdef CC_INTERP
   // c++ interpreter never wants to use interp_masm version of call_VM
   #define VIRTUAL
 #else
   #define VIRTUAL virtual
 #endif
   VIRTUAL void call_VM_leaf_base(
     address entry_point,               // the entry point
     int     number_of_arguments        // the number of arguments to pop after the call
   );
   // This is the base routine called by the different versions of call_VM. The interpreter
   // may customize this version by overriding it for its purposes (e.g., to save/restore
   // additional registers when doing a VM call).
   //
   // If no java_thread register is specified (noreg) than TREG will be used instead. call_VM_base
   // returns the register which contains the thread upon return. If a thread register has been
   // specified, the return value will correspond to that register. If no last_java_sp is specified
   // (noreg) than sp will be used instead.
   VIRTUAL void call_VM_base(           // returns the register containing the thread upon return
     Register oop_result,               // where an oop-result ends up if any; use noreg otherwise
     Register java_thread,              // the thread if computed before     ; use noreg otherwise
     Register last_java_sp,             // to set up last_Java_frame in stubs; use noreg otherwise
     address  entry_point,              // the entry point
     int      number_of_arguments,      // the number of arguments (w/o thread) to pop after the call
     bool     check_exceptions          // whether to check for pending exceptions after return
   );
   // These routines should emit JVMTI PopFrame and ForceEarlyReturn handling code.
   // The implementation is only non-empty for the InterpreterMacroAssembler,
   // as only the interpreter handles PopFrame and ForceEarlyReturn requests.
   virtual void check_and_handle_popframe(Register java_thread);
   virtual void check_and_handle_earlyret(Register java_thread);
   void call_VM_helper(Register oop_result, address entry_point, int number_of_arguments, bool check_exceptions = true);
   // helpers for FPU flag access
   // tmp is a temporary register, if none is available use noreg
  public:
   static intptr_t  i[32];
   static float  f[32];
   static void print(outputStream *s);
   static int i_offset(unsigned int k);
   static int f_offset(unsigned int k);
   static void save_registers(MacroAssembler *masm);
   static void restore_registers(MacroAssembler *masm);
   MacroAssembler(CodeBuffer* code) : Assembler(code) {}
   // Support for NULL-checks
   //
   // Generates code that causes a NULL OS exception if the content of reg is NULL.
   // If the accessed location is M[reg + offset] and the offset is known, provide the
   // offset. No explicit code generation is needed if the offset is within a certain
   // range (0 <= offset <= page_size).
   void null_check(Register reg, int offset = -1);
   static bool needs_explicit_null_check(intptr_t offset);
   // Required platform-specific helpers for Label::patch_instructions.
   // They _shadow_ the declarations in AbstractAssembler, which are undefined.
   void pd_patch_instruction(address branch, address target);
   // Support for inc/dec with optimal instruction selection depending on value
   void incrementl(Register reg, int value = 1);
   void decrementl(Register reg, int value = 1);
   // Alignment
   void align(int modulus);
   // Stack frame creation/removal
   void enter();
   void leave();
   // Support for getting the JavaThread pointer (i.e.; a reference to thread-local information)
   // The pointer will be loaded into the thread register.
   void get_thread(Register thread);
   // Support for VM calls
   //
   // It is imperative that all calls into the VM are handled via the call_VM macros.
   // They make sure that the stack linkage is setup correctly. call_VM's correspond
   // to ENTRY/ENTRY_X entry points while call_VM_leaf's correspond to LEAF entry points.
   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);
   // Overloadings with last_Java_sp
   void call_VM(Register oop_result,
                Register last_java_sp,
                address entry_point,
                int number_of_arguments = 0,
                bool check_exceptions = true);
   void call_VM(Register oop_result,
                Register last_java_sp,
                address entry_point,
                Register arg_1, bool
                check_exceptions = true);
   void call_VM(Register oop_result,
                Register last_java_sp,
                address entry_point,
                Register arg_1, Register arg_2,
                bool check_exceptions = true);
   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);
   void get_vm_result  (Register oop_result, Register thread);
   void get_vm_result_2(Register metadata_result, Register thread);
   void call_VM_leaf(address entry_point,
                     int number_of_arguments = 0);
   void call_VM_leaf(address entry_point,
                     Register arg_1);
   void call_VM_leaf(address entry_point,
                     Register arg_1, Register arg_2);
   void call_VM_leaf(address entry_point,
                     Register arg_1, Register arg_2, Register arg_3);
   // Super call_VM calls - correspond to MacroAssembler::call_VM(_leaf) calls
   void super_call_VM_leaf(address entry_point);
   void super_call_VM_leaf(address entry_point, Register arg_1);
   void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2);
   void super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3);
   // last Java Frame (fills frame anchor)
   void set_last_Java_frame(Register thread,
                            Register last_java_sp,
                            Register last_java_fp,
                            address last_java_pc);
   // thread in the default location (S6)
   void set_last_Java_frame(Register last_java_sp,
                            Register last_java_fp,
                            address last_java_pc);
   void reset_last_Java_frame(Register thread, bool clear_fp);
   // thread in the default location (S6)
   void reset_last_Java_frame(bool clear_fp);
   // Stores
   void store_check(Register obj);                // store check for obj - register is destroyed afterwards
   void store_check(Register obj, Address dst);   // same as above, dst is exact store location (reg. is destroyed)
  void resolve_jobject(Register value, Register thread, Register tmp);
  void clear_jweak_tag(Register possibly_jweak);
 #if INCLUDE_ALL_GCS
   void g1_write_barrier_pre(Register obj,
                             Register pre_val,
                             Register thread,
                             Register tmp,
                             bool tosca_live,
                             bool expand_call);
   void g1_write_barrier_post(Register store_addr,
                              Register new_val,
                              Register thread,
                              Register tmp,
                              Register tmp2);
 #endif // INCLUDE_ALL_GCS
   // split store_check(Register obj) to enhance instruction interleaving
   void store_check_part_1(Register obj);
   void store_check_part_2(Register obj);
   // C 'boolean' to Java boolean: x == 0 ? 0 : 1
   void c2bool(Register x);
   //add for compressedoops
   void load_klass(Register dst, Register src);
   void store_klass(Register dst, Register src);
   void load_prototype_header(Register dst, Register src);
 #ifdef _LP64
   void store_klass_gap(Register dst, Register src);
   void load_heap_oop(Register dst, Address src);
   void store_heap_oop(Address dst, Register src);
   void store_heap_oop_null(Address dst);
   void encode_heap_oop(Register r);
   void encode_heap_oop(Register dst, Register src);
   void decode_heap_oop(Register r);
   void decode_heap_oop(Register dst, Register src);
   void encode_heap_oop_not_null(Register r);
   void decode_heap_oop_not_null(Register r);
   void encode_heap_oop_not_null(Register dst, Register src);
   void decode_heap_oop_not_null(Register dst, Register src);
   void encode_klass_not_null(Register r);
   void decode_klass_not_null(Register r);
   void encode_klass_not_null(Register dst, Register src);
   void decode_klass_not_null(Register dst, Register src);
   // Returns the byte size of the instructions generated by decode_klass_not_null()
   // when compressed klass pointers are being used.
   static int instr_size_for_decode_klass_not_null();
   // if heap base register is used - reinit it with the correct value
   void reinit_heapbase();
   DEBUG_ONLY(void verify_heapbase(const char* msg);)
   void set_narrow_klass(Register dst, Klass* k);
   void set_narrow_oop(Register dst, jobject obj);
 #endif // _LP64
   void int3();
   // Sign extension
 #ifdef _LP64
   void sign_extend_short(Register reg)   { /*dsll32(reg, reg, 16); dsra32(reg, reg, 16);*/ seh(reg, reg); }
   void sign_extend_byte(Register reg)  { /*dsll32(reg, reg, 24); dsra32(reg, reg, 24);*/ seb(reg, reg); }
 #else
   void sign_extend_short(Register reg)   { /*sll(reg, reg, 16); sra(reg, reg, 16);*/ seh(reg, reg); }
   void sign_extend_byte(Register reg)  { /*sll(reg, reg, 24); sra(reg, reg, 24);*/ seb(reg, reg);}
 #endif
   void rem_s(FloatRegister fd, FloatRegister fs, FloatRegister ft, FloatRegister tmp);
   void rem_d(FloatRegister fd, FloatRegister fs, FloatRegister ft, FloatRegister tmp);
   void trigfunc(char trig, int num_fpu_regs_in_use = 1);
   // allocation
   void eden_allocate(
     Register obj,                      // result: pointer to object after successful allocation
     Register var_size_in_bytes,        // object size in bytes if unknown at compile time; invalid otherwise
     int      con_size_in_bytes,        // object size in bytes if   known at compile time
     Register t1,                       // temp register
     Register t2,
     Label&   slow_case                 // continuation point if fast allocation fails
   );
   void tlab_allocate(
     Register obj,                      // result: pointer to object after successful allocation
     Register var_size_in_bytes,        // object size in bytes if unknown at compile time; invalid otherwise
     int      con_size_in_bytes,        // object size in bytes if   known at compile time
     Register t1,                       // temp register
     Register t2,                       // temp register
     Label&   slow_case                 // continuation point if fast allocation fails
   );
   void tlab_refill(Label& retry_tlab, Label& try_eden, Label& slow_case);
   void incr_allocated_bytes(Register thread,
                             Register var_size_in_bytes, int con_size_in_bytes,
                             Register t1 = noreg);
   // interface method calling
   void lookup_interface_method(Register recv_klass,
                                Register intf_klass,
                                RegisterOrConstant itable_index,
                                Register method_result,
                                Register scan_temp,
                                Label& no_such_interface,
                                bool return_method = true);
   // virtual method calling
   void lookup_virtual_method(Register recv_klass,
                              RegisterOrConstant vtable_index,
                              Register method_result);
   // Test sub_klass against super_klass, with fast and slow paths.
   // The fast path produces a tri-state answer: yes / no / maybe-slow.
   // One of the three labels can be NULL, meaning take the fall-through.
   // If super_check_offset is -1, the value is loaded up from super_klass.
   // No registers are killed, except temp_reg.
   void check_klass_subtype_fast_path(Register sub_klass,
                                      Register super_klass,
                                      Register temp_reg,
                                      Label* L_success,
                                      Label* L_failure,
                                      Label* L_slow_path,
                 RegisterOrConstant super_check_offset = RegisterOrConstant(-1));
   // The rest of the type check; must be wired to a corresponding fast path.
   // It does not repeat the fast path logic, so don't use it standalone.
   // The temp_reg and temp2_reg can be noreg, if no temps are available.
   // Updates the sub's secondary super cache as necessary.
   // If set_cond_codes, condition codes will be Z on success, NZ on failure.
   void check_klass_subtype_slow_path(Register sub_klass,
                                      Register super_klass,
                                      Register temp_reg,
                                      Register temp2_reg,
                                      Label* L_success,
                                      Label* L_failure,
                                      bool set_cond_codes = false);
   // Simplified, combined version, good for typical uses.
   // Falls through on failure.
   void check_klass_subtype(Register sub_klass,
                            Register super_klass,
                            Register temp_reg,
                            Label& L_success);
   // Debugging
   // only if +VerifyOops
   void verify_oop(Register reg, const char* s = "broken oop");
   void verify_oop_addr(Address addr, const char * s = "broken oop addr");
   void verify_oop_subroutine();
   // TODO: verify method and klass metadata (compare against vptr?)
   void _verify_method_ptr(Register reg, const char * msg, const char * file, int line) {}
   void _verify_klass_ptr(Register reg, const char * msg, const char * file, int line){}
   #define verify_method_ptr(reg) _verify_method_ptr(reg, "broken method " #reg, __FILE__, __LINE__)
   #define verify_klass_ptr(reg) _verify_klass_ptr(reg, "broken klass " #reg, __FILE__, __LINE__)
   // only if +VerifyFPU
   void verify_FPU(int stack_depth, const char* s = "illegal FPU state");
   // prints msg, dumps registers and stops execution
   void stop(const char* msg);
   // prints msg and continues
   void warn(const char* msg);
   static void debug(char* msg/*, RegistersForDebugging* regs*/);
   static void debug64(char* msg, int64_t pc, int64_t regs[]);
   void print_reg(Register reg);
   void print_reg(FloatRegister reg);
   //void os_breakpoint();
   void untested()                                { stop("untested"); }
   void unimplemented(const char* what = "")      { char* b = new char[1024];  jio_snprintf(b, sizeof(b), "unimplemented: %s", what);  stop(b); }
   void should_not_reach_here()                   { stop("should not reach here"); }
   void print_CPU_state();
   // Stack overflow checking
   void bang_stack_with_offset(int offset) {
     // stack grows down, caller passes positive offset
     assert(offset > 0, "must bang with negative offset");
     if (offset <= 32768) {
       sw(A0, SP, -offset);
     } else {
 #ifdef _LP64
       li(AT, offset);
       dsub(AT, SP, AT);
 #else
       move(AT, offset);
       sub(AT, SP, AT);
 #endif
       sw(A0, AT, 0);
     }
   }
   // Writes to stack successive pages until offset reached to check for
   // stack overflow + shadow pages.  Also, clobbers tmp
   void bang_stack_size(Register size, Register tmp);
   virtual RegisterOrConstant delayed_value_impl(intptr_t* delayed_value_addr,
                                                 Register tmp,
                                                 int offset);
   // Support for serializing memory accesses between threads
   void serialize_memory(Register thread, Register tmp);
   //void verify_tlab();
   void verify_tlab(Register t1, Register t2);
   // Biased locking support
   // lock_reg and obj_reg must be loaded up with the appropriate values.
   // tmp_reg is optional. If it is supplied (i.e., != noreg) it will
   // be killed; if not supplied, push/pop will be used internally to
   // allocate a temporary (inefficient, avoid if possible).
   // Optional slow case is for implementations (interpreter and C1) which branch to
   // slow case directly. Leaves condition codes set for C2's Fast_Lock node.
   // Returns offset of first potentially-faulting instruction for null
   // check info (currently consumed only by C1). If
   // swap_reg_contains_mark is true then returns -1 as it is assumed
   // the calling code has already passed any potential faults.
   int biased_locking_enter(Register lock_reg, Register obj_reg,
                            Register swap_reg, Register tmp_reg,
                            bool swap_reg_contains_mark,
                            Label& done, Label* slow_case = NULL,
                            BiasedLockingCounters* counters = NULL);
   void biased_locking_exit (Register obj_reg, Register temp_reg, Label& done);
 #ifdef COMPILER2
   void fast_lock(Register obj, Register box, Register tmp, Register scr);
   void fast_unlock(Register obj, Register box, Register tmp);
 #endif
   // Arithmetics
   // Regular vs. d* versions
   inline void addu_long(Register rd, Register rs, Register rt) {
 #ifdef _LP64
     daddu(rd, rs, rt);
 #else
     addu(rd, rs, rt);
 #endif
   }
   inline void addu_long(Register rd, Register rs, long imm32_64) {
 #ifdef _LP64
     daddiu(rd, rs, imm32_64);
 #else
     addiu(rd, rs, imm32_64);
 #endif
   }
   void round_to(Register reg, int modulus) {
     assert_different_registers(reg, AT);
     increment(reg, modulus - 1);
     move(AT, - modulus);
     andr(reg, reg, AT);
   }
   // the follow two might use AT register, be sure you have no meanful data in AT before you call them
   void increment(Register reg, int imm);
   void decrement(Register reg, int imm);
 #ifdef _LP64
   void shl(Register reg, int sa)        { dsll(reg, reg, sa); }
   void shr(Register reg, int sa)        { dsrl(reg, reg, sa); }
   void sar(Register reg, int sa)        { dsra(reg, reg, sa); }
 #else
   void shl(Register reg, int sa)        { sll(reg, reg, sa); }
   void shr(Register reg, int sa)        { srl(reg, reg, sa); }
   void sar(Register reg, int sa)        { sra(reg, reg, sa); }
 #endif
   // Helper functions for statistics gathering.
   void atomic_inc32(address counter_addr, int inc, Register tmp_reg1, Register tmp_reg2);
   // Calls
   void call(address entry);
   void call(address entry, relocInfo::relocType rtype);
   void call(address entry, RelocationHolder& rh);
   // Emit the CompiledIC call idiom
   void ic_call(address entry);
   // Jumps
   void jmp(address entry);
   void jmp(address entry, relocInfo::relocType rtype);
   void jmp_far(Label& L); // always long jumps
   /* branches may exceed 16-bit offset */
   void b_far(address entry);
   void b_far(Label& L);
   void bne_far    (Register rs, Register rt, address entry);
   void bne_far    (Register rs, Register rt, Label& L);
   void beq_far    (Register rs, Register rt, address entry);
   void beq_far    (Register rs, Register rt, Label& L);
   // For C2 to support long branches
   void beq_long   (Register rs, Register rt, Label& L);
   void bne_long   (Register rs, Register rt, Label& L);
   void bc1t_long  (Label& L);
   void bc1f_long  (Label& L);
   void patchable_call(address target);
   void general_call(address target);
   void patchable_jump(address target);
   void general_jump(address target);
   static int insts_for_patchable_call(address target);
   static int insts_for_general_call(address target);
   static int insts_for_patchable_jump(address target);
   static int insts_for_general_jump(address target);
   // Floating
   // Data
   // Argument ops
   inline void store_int_argument(Register s, Argument &a) {
     if(a.is_Register()) {
       move(a.as_Register(), s);
     } else {
       sw(s, a.as_caller_address());
     }
   }
   inline void store_long_argument(Register s, Argument &a) {
     Argument a1 = a.successor();
     if(a.is_Register() && a1.is_Register()) {
       move(a.as_Register(), s);
       move(a.as_Register(), s);
     } else {
       sd(s, a.as_caller_address());
     }
   }
   inline void store_float_argument(FloatRegister s, Argument &a) {
     if(a.is_Register()) {
       mov_s(a.as_FloatRegister(), s);
     } else {
       swc1(s, a.as_caller_address());
     }
   }
   inline void store_double_argument(FloatRegister s, Argument &a) {
     if(a.is_Register()) {
       mov_d(a.as_FloatRegister(), s);
     } else {
       sdc1(s, a.as_caller_address());
     }
   }
   inline void store_ptr_argument(Register s, Argument &a) {
     if(a.is_Register()) {
       move(a.as_Register(), s);
     } else {
       st_ptr(s, a.as_caller_address());
     }
   }
   // Load and store values by size and signed-ness
   void load_sized_value(Register dst, Address src, size_t size_in_bytes, bool is_signed, Register dst2 = noreg);
   void store_sized_value(Address dst, Register src, size_t size_in_bytes, Register src2 = noreg);
   // ld_ptr will perform lw for 32 bit VMs and ld for 64 bit VMs
   inline void ld_ptr(Register rt, Address a) {
 #ifdef _LP64
     ld(rt, a);
 #else
     lw(rt, a);
 #endif
   }
   inline void ld_ptr(Register rt, Register base, int offset16) {
 #ifdef _LP64
     ld(rt, base, offset16);
 #else
     lw(rt, base, offset16);
 #endif
   }
   // st_ptr will perform sw for 32 bit VMs and sd for 64 bit VMs
   inline void st_ptr(Register rt, Address a) {
 #ifdef _LP64
     sd(rt, a);
 #else
     sw(rt, a);
 #endif
   }
   inline void st_ptr(Register rt, Register base, int offset16) {
 #ifdef _LP64
     sd(rt, base, offset16);
 #else
     sw(rt, base, offset16);
 #endif
   }
   void ld_ptr(Register rt, Register offset, Register base);
   void st_ptr(Register rt, Register offset, Register base);
   // ld_long will perform lw for 32 bit VMs and ld for 64 bit VMs
   // st_long will perform sw for 32 bit VMs and sd for 64 bit VMs
   inline void ld_long(Register rt, Register base, int offset16);
   inline void st_long(Register rt, Register base, int offset16);
   inline void ld_long(Register rt, Address a);
   inline void st_long(Register rt, Address a);
   void ld_long(Register rt, Register offset, Register base);
   void st_long(Register rt, Register offset, Register base);
   // swap the two byte of the low 16-bit halfword
   // this directive will use AT, be sure the high 16-bit of reg is zero
   void hswap(Register reg);
   void huswap(Register reg);
   // convert big endian integer to little endian integer
   void swap(Register reg);
   // implement the x86 instruction semantic
   // if c_reg == *dest then *dest <= x_reg
   // else c_reg <= *dest
   // the AT indicate if xchg occurred, 1 for xchged, else  0
   void cmpxchg(Register x_reg, Address dest, Register c_reg);
 #ifdef _LP64
   void cmpxchg32(Register x_reg, Address dest, Register c_reg);
 #endif
   void cmpxchg8(Register x_regLo, Register x_regHi, Address dest, Register c_regLo, Register c_regHi);
   //pop & push, added by aoqi
 #ifdef _LP64
   void extend_sign(Register rh, Register rl) { stop("extend_sign"); }
   void neg(Register reg) { dsubu(reg, R0, reg); }
   void push (Register reg)      { sd  (reg, SP, -8); daddi(SP, SP, -8); }
   void push (FloatRegister reg) { sdc1(reg, SP, -8); daddi(SP, SP, -8); }
   void pop  (Register reg)      { ld  (reg, SP, 0);  daddi(SP, SP, 8); }
   void pop  (FloatRegister reg) { ldc1(reg, SP, 0);  daddi(SP, SP, 8); }
   void pop  ()                  { daddi(SP, SP, 8); }
   void pop2 ()                  { daddi(SP, SP, 16); }
 #else
   void extend_sign(Register rh, Register rl) { sra(rh, rl, 31); }
   void neg(Register reg) { subu(reg, R0, reg); }
   void push (Register reg)      { sw  (reg, SP, -4); addi(SP, SP, -4); }
   void push (FloatRegister reg) { swc1(reg, SP, -4); addi(SP, SP, -4); }
   void pop  (Register reg)      { lw  (reg, SP, 0);  addi(SP, SP, 4); }
   void pop  (FloatRegister reg) { lwc1(reg, SP, 0);  addi(SP, SP, 4); }
   void pop  ()                  { addi(SP, SP, 4); }
   void pop2 ()                  { addi(SP, SP, 8); }
 #endif
   void push2(Register reg1, Register reg2);
   void pop2 (Register reg1, Register reg2);
   void dpush (Register reg)     { sd  (reg, SP, -8); daddi(SP, SP, -8); }
   void dpop  (Register reg)     { ld  (reg, SP, 0);  daddi(SP, SP, 8); }
   //we need 2 fun to save and resotre general register
   void pushad();
   void popad();
   void pushad_except_v0();
   void popad_except_v0();
   //move an 32-bit immediate to Register
   void move(Register reg, int imm32)  { li32(reg, imm32); }
   void li  (Register rd, long imm);
   void li  (Register rd, address addr) { li(rd, (long)addr); }
   //replace move(Register reg, int imm)
   void li32(Register rd, int imm32); // sign-extends to 64 bits on mips64
 #ifdef _LP64
   void set64(Register d, jlong value);
   static int  insts_for_set64(jlong value);
   void patchable_set48(Register d, jlong value);
   void patchable_set32(Register d, jlong value);
   void patchable_call32(Register d, jlong value);
   static int call_size(address target, bool far, bool patchable);
   static bool reachable_from_cache(address target);
   void dli(Register rd, long imm) { li(rd, imm); }
   void li64(Register rd, long imm);
   void li48(Register rd, long imm);
 #endif
 #ifdef _LP64
   void move(Register rd, Register rs)   { dadd(rd, rs, R0); }
   void move_u32(Register rd, Register rs)   { addu32(rd, rs, R0); }
 #else
   void move(Register rd, Register rs)   { add(rd, rs, R0); }
 #endif
   void dmove(Register rd, Register rs)  { dadd(rd, rs, R0); }
   void mov_metadata(Register dst, Metadata* obj);
   void mov_metadata(Address dst, Metadata* obj);
   void store_for_type_by_register(Register src_reg,      Register tmp_reg, int disp, BasicType type, bool wide);
   void store_for_type_by_register(FloatRegister src_reg, Register tmp_reg, int disp, BasicType type);
   void store_for_type(Register src_reg,      Address addr, BasicType type = T_INT, bool wide = false);
   void store_for_type(FloatRegister src_reg, Address addr, BasicType type = T_INT);
   void load_for_type_by_register(Register dst_reg,      Register tmp_reg, int disp, BasicType type, bool wide);
   void load_for_type_by_register(FloatRegister dst_reg, Register tmp_reg, int disp, BasicType type);
   int load_for_type(Register dst_reg,      Address addr, BasicType type = T_INT, bool wide = false);
   int load_for_type(FloatRegister dst_reg, Address addr, BasicType type = T_INT);
 #ifndef PRODUCT
   static void pd_print_patched_instruction(address branch) {
     jint stub_inst = *(jint*) branch;
     print_instruction(stub_inst);
     ::tty->print("%s", " (unresolved)");
   }
 #endif
   //FIXME
   void empty_FPU_stack(){/*need implemented*/};
   // method handles (JSR 292)
   Address argument_address(RegisterOrConstant arg_slot, int extra_slot_offset = 0);
 #undef VIRTUAL
 };
 /**
  * class SkipIfEqual:
  *
  * Instantiating this class will result in assembly code being output that will
  * jump around any code emitted between the creation of the instance and it's
  * automatic destruction at the end of a scope block, depending on the value of
  * the flag passed to the constructor, which will be checked at run-time.
  */
 class SkipIfEqual {
  private:
   MacroAssembler* _masm;
   Label _label;
  public:
    SkipIfEqual(MacroAssembler*, const bool* flag_addr, bool value);
    ~SkipIfEqual();
 };
 #ifdef ASSERT
 inline bool AbstractAssembler::pd_check_instruction_mark() { return true; }
 #endif
 #endif // CPU_MIPS_VM_MACROASSEMBLER_MIPS_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/cpu/mips/vm/macroAssembler_mips.hpp@0b27fc8adf1b (annotated)

src/cpu/mips/vm/macroAssembler_mips.hpp