jdk8-mips64-public/hotspot: src/cpu/mips/vm/c1_FrameMap

src/cpu/mips/vm/c1_FrameMap_mips.cpp@d885f8d65c58 (annotated)

src/cpu/mips/vm/c1_FrameMap_mips.cpp

Tue, 26 Jul 2016 17:06:17 +0800

author: fujie
date: Tue, 26 Jul 2016 17:06:17 +0800
changeset 41: d885f8d65c58
parent 1: 2d8a650513c2
child 6880: 52ea28d233d2
permissions: -rw-r--r--

Add multiply word to GPR instruction (mul) in MIPS assembler.

 /*
  * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2015, 2016, 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.
  *
  */
 #include "precompiled.hpp"
 #include "c1/c1_FrameMap.hpp"
 #include "c1/c1_LIR.hpp"
 #include "runtime/sharedRuntime.hpp"
 #include "vmreg_mips.inline.hpp"
 const int FrameMap::pd_c_runtime_reserved_arg_size = 0;
 FloatRegister FrameMap::_fpu_regs[32];
 LIR_Opr FrameMap::map_to_opr(BasicType type, VMRegPair* reg, bool) {
 	LIR_Opr opr = LIR_OprFact::illegalOpr;
 	VMReg r_1 = reg->first();
 	VMReg r_2 = reg->second();
 	if (r_1->is_stack()) {
 		// Convert stack slot to an SP offset
 		// The calling convention does not count the
 		// SharedRuntime::out_preserve_stack_slots() value
 		// so we must add it in here.
 		int st_off = (r_1->reg2stack() + SharedRuntime::out_preserve_stack_slots())
 			* VMRegImpl::stack_slot_size;
 		opr = LIR_OprFact::address(new LIR_Address(_sp_opr, st_off, type));
 	} else if (r_1->is_Register()) {
 		Register reg = r_1->as_Register();
 		if (r_2->is_Register() && (type == T_LONG || type == T_DOUBLE)) {
 			Register reg2 = r_2->as_Register();
 #ifdef _LP64
 			assert(reg2 == reg, "must be same register");
 #endif
 			opr = as_long_opr(reg, reg2);
 		} else if (type == T_OBJECT || type == T_ARRAY) {
 			opr = as_oop_opr(reg);
 		} else {
 			opr = as_opr(reg);
 		}
 	} else if (r_1->is_FloatRegister()) {
 		assert(type == T_DOUBLE || type == T_FLOAT, "wrong type");
 		int num = r_1->as_FloatRegister()->encoding();
 		if (type == T_FLOAT) {
 			opr =  LIR_OprFact::single_fpu(num);
 		} else {
 			opr =  LIR_OprFact::double_fpu(num);
 		}
 	} else {
 		 ShouldNotReachHere();
 	    }
 	return opr;
 }
 // some useful constant RInfo's:
 LIR_Opr FrameMap::_zero_opr;
 LIR_Opr FrameMap::_k0_opr;
 LIR_Opr FrameMap::_k1_opr;
 LIR_Opr FrameMap::_at_opr;
 LIR_Opr FrameMap::_v0_opr;
 LIR_Opr FrameMap::_v1_opr;
 LIR_Opr FrameMap::_a0_opr;
 LIR_Opr FrameMap::_a1_opr;
 LIR_Opr FrameMap::_a2_opr;
 LIR_Opr FrameMap::_a3_opr;
 LIR_Opr FrameMap::_t0_opr;
 LIR_Opr FrameMap::_t1_opr;
 LIR_Opr FrameMap::_t2_opr;
 LIR_Opr FrameMap::_t3_opr;
 #ifndef _LP64
 LIR_Opr FrameMap::_t4_opr;
 LIR_Opr FrameMap::_t5_opr;
 LIR_Opr FrameMap::_t6_opr;
 LIR_Opr FrameMap::_t7_opr;
 #else
 LIR_Opr FrameMap::_a4_opr;
 LIR_Opr FrameMap::_a5_opr;
 LIR_Opr FrameMap::_a6_opr;
 LIR_Opr FrameMap::_a7_opr;
 #endif
 LIR_Opr FrameMap::_t8_opr;
 LIR_Opr FrameMap::_t9_opr;
 LIR_Opr FrameMap::_s0_opr;
 LIR_Opr FrameMap::_s1_opr;
 LIR_Opr FrameMap::_s2_opr;
 LIR_Opr FrameMap::_s3_opr;
 LIR_Opr FrameMap::_s4_opr;
 LIR_Opr FrameMap::_s5_opr;
 LIR_Opr FrameMap::_s6_opr;
 LIR_Opr FrameMap::_s7_opr;
 LIR_Opr FrameMap::_gp_opr;
 LIR_Opr FrameMap::_fp_opr;
 LIR_Opr FrameMap::_sp_opr;
 LIR_Opr FrameMap::_ra_opr;
 LIR_Opr FrameMap::_a0_a1_opr;
 LIR_Opr FrameMap::_a2_a3_opr;
 LIR_Opr FrameMap::_v0_v1_opr;
 LIR_Opr FrameMap::_f0_opr;
 LIR_Opr FrameMap::_f12_opr;
 LIR_Opr FrameMap::_f14_opr;
 LIR_Opr FrameMap::_d0_opr;
 LIR_Opr FrameMap::_d12_opr;
 LIR_Opr FrameMap::_d14_opr;
 LIR_Opr FrameMap::receiver_opr;
 //caller saved register
 LIR_Opr FrameMap::_v0_oop_opr;
 LIR_Opr FrameMap::_v1_oop_opr;
 LIR_Opr FrameMap::_a0_oop_opr;
 LIR_Opr FrameMap::_a1_oop_opr;
 LIR_Opr FrameMap::_a2_oop_opr;
 LIR_Opr FrameMap::_a3_oop_opr;
 LIR_Opr FrameMap::_t0_oop_opr;
 LIR_Opr FrameMap::_t1_oop_opr;
 LIR_Opr FrameMap::_t2_oop_opr;
 LIR_Opr FrameMap::_t3_oop_opr;
 #ifndef _LP64
 LIR_Opr FrameMap::_t4_oop_opr;
 LIR_Opr FrameMap::_t5_oop_opr;
 LIR_Opr FrameMap::_t6_oop_opr;
 LIR_Opr FrameMap::_t7_oop_opr;
 #else
 LIR_Opr FrameMap::_a4_oop_opr;
 LIR_Opr FrameMap::_a5_oop_opr;
 LIR_Opr FrameMap::_a6_oop_opr;
 LIR_Opr FrameMap::_a7_oop_opr;
 #endif
 LIR_Opr FrameMap::_t8_oop_opr;
 LIR_Opr FrameMap::_t9_oop_opr;
 LIR_Opr FrameMap::_s0_oop_opr;
 LIR_Opr FrameMap::_s1_oop_opr;
 LIR_Opr FrameMap::_s2_oop_opr;
 LIR_Opr FrameMap::_s3_oop_opr;
 LIR_Opr FrameMap::_s4_oop_opr;
 LIR_Opr FrameMap::_s5_oop_opr;
 LIR_Opr FrameMap::_s6_oop_opr;
 LIR_Opr FrameMap::_s7_oop_opr;
 LIR_Opr FrameMap::_a0_a1_long_opr;
 LIR_Opr FrameMap::_a2_a3_long_opr;
 LIR_Opr FrameMap::_v0_v1_long_opr;
 LIR_Opr FrameMap::_f0_float_opr;
 LIR_Opr FrameMap::_f12_float_opr;
 LIR_Opr FrameMap::_f14_float_opr;
 LIR_Opr FrameMap::_d0_double_opr;
 LIR_Opr FrameMap::_d12_double_opr;
 LIR_Opr FrameMap::_d14_double_opr;
 LIR_Opr FrameMap::_caller_save_cpu_regs[] = { 0, };
 LIR_Opr FrameMap::_caller_save_fpu_regs[] = { 0, };
 //--------------------------------------------------------
 //               FrameMap
 //--------------------------------------------------------
 FloatRegister FrameMap::nr2floatreg (int rnr) {
 	assert(_init_done, "tables not initialized");
 	debug_only(fpu_range_check(rnr);)
 	return _fpu_regs[rnr];
 }
 // returns true if reg could be smashed by a callee.
 bool FrameMap::is_caller_save_register (LIR_Opr reg) {
 	if (reg->is_single_fpu() || reg->is_double_fpu()) { return true; }
 	if (reg->is_double_cpu()) {
 		return is_caller_save_register(reg->as_register_lo()) ||
 			is_caller_save_register(reg->as_register_hi());
 	}
 	return is_caller_save_register(reg->as_register());
 }
 //FIXME, why always ture? @jerome
 bool FrameMap::is_caller_save_register (Register r) {
 //	return (r>=V0 && r<=T7) || (r==T8) || (r==T9);
 	//return ((r>=V0) && (r<=T7));
 	return true;
 }
 void FrameMap::initialize() {
   if (_init_done) return;
   assert(nof_cpu_regs == 32, "wrong number of CPU registers");
   //init _cpu_regs for RegAlloc
   int i = 0;
   map_register(0,R0);	_zero_opr=LIR_OprFact::single_cpu(0);
   map_register(1,AT);
 #ifdef _LP64
   _at_opr=LIR_OprFact::double_cpu(1, 1);
 #else
   _at_opr=LIR_OprFact::single_cpu(1);
 #endif
   map_register(2,V0);	_v0_opr=LIR_OprFact::single_cpu(2);   _v0_oop_opr=LIR_OprFact::single_cpu_oop(2);
   map_register(3,V1);	_v1_opr=LIR_OprFact::single_cpu(3);   _v1_oop_opr=LIR_OprFact::single_cpu_oop(3);
   map_register(4,A0);	_a0_opr=LIR_OprFact::single_cpu(4);   _a0_oop_opr=LIR_OprFact::single_cpu_oop(4);
   map_register(5,A1);	_a1_opr=LIR_OprFact::single_cpu(5);   _a1_oop_opr=LIR_OprFact::single_cpu_oop(5);
   map_register(6,A2);	_a2_opr=LIR_OprFact::single_cpu(6);   _a2_oop_opr=LIR_OprFact::single_cpu_oop(6);
   map_register(7,A3);	_a3_opr=LIR_OprFact::single_cpu(7);   _a3_oop_opr=LIR_OprFact::single_cpu_oop(7);
 #ifndef _LP64
   map_register(8,T0);	_t0_opr=LIR_OprFact::single_cpu(8);   _t0_oop_opr=LIR_OprFact::single_cpu_oop(8);
   map_register(9,T1);	_t1_opr=LIR_OprFact::single_cpu(9);   _t1_oop_opr=LIR_OprFact::single_cpu_oop(9);
   map_register(10,T2);	_t2_opr=LIR_OprFact::single_cpu(10);  _t2_oop_opr=LIR_OprFact::single_cpu_oop(10);
   map_register(11,T3);	_t3_opr=LIR_OprFact::single_cpu(11);  _t3_oop_opr=LIR_OprFact::single_cpu_oop(11);
   map_register(12,T4);	_t4_opr=LIR_OprFact::single_cpu(12);  _t4_oop_opr=LIR_OprFact::single_cpu_oop(12);
   map_register(13,T5);	_t5_opr=LIR_OprFact::single_cpu(13);  _t5_oop_opr=LIR_OprFact::single_cpu_oop(13);
   map_register(14,T6);	_t6_opr=LIR_OprFact::single_cpu(14);  _t6_oop_opr=LIR_OprFact::single_cpu_oop(14);
   map_register(15,T7);	_t7_opr=LIR_OprFact::single_cpu(15);  _t7_oop_opr=LIR_OprFact::single_cpu_oop(15);
 #else
   map_register(8,A4);	_a4_opr=LIR_OprFact::single_cpu(8);   _a4_oop_opr=LIR_OprFact::single_cpu_oop(8);
   map_register(9,A5);	_a5_opr=LIR_OprFact::single_cpu(9);   _a5_oop_opr=LIR_OprFact::single_cpu_oop(9);
   map_register(10,A6);	_a6_opr=LIR_OprFact::single_cpu(10);  _a6_oop_opr=LIR_OprFact::single_cpu_oop(10);
   map_register(11,A7);	_a7_opr=LIR_OprFact::single_cpu(11);  _a7_oop_opr=LIR_OprFact::single_cpu_oop(11);
   map_register(12,T0);	_t0_opr=LIR_OprFact::single_cpu(12);  _t0_oop_opr=LIR_OprFact::single_cpu_oop(12);
   map_register(13,T1);	_t1_opr=LIR_OprFact::single_cpu(13);  _t1_oop_opr=LIR_OprFact::single_cpu_oop(13);
   map_register(14,T2);	_t2_opr=LIR_OprFact::single_cpu(14);  _t2_oop_opr=LIR_OprFact::single_cpu_oop(14);
   map_register(15,T3);	_t3_opr=LIR_OprFact::single_cpu(15);  _t3_oop_opr=LIR_OprFact::single_cpu_oop(15);
 #endif
   map_register(16,S0);	_s0_opr=LIR_OprFact::single_cpu(16);  _s0_oop_opr=LIR_OprFact::single_cpu_oop(16);
   map_register(17,S1);	_s1_opr=LIR_OprFact::single_cpu(17);  _s1_oop_opr=LIR_OprFact::single_cpu_oop(17);
   map_register(18,S2);	_s2_opr=LIR_OprFact::single_cpu(18);  _s2_oop_opr=LIR_OprFact::single_cpu_oop(18);
   map_register(19,S3);	_s3_opr=LIR_OprFact::single_cpu(19);  _s3_oop_opr=LIR_OprFact::single_cpu_oop(19);
   map_register(20,S4);	_s4_opr=LIR_OprFact::single_cpu(20);  _s4_oop_opr=LIR_OprFact::single_cpu_oop(20);
   map_register(21,S5);	_s5_opr=LIR_OprFact::single_cpu(21);  _s5_oop_opr=LIR_OprFact::single_cpu_oop(21);
   map_register(22,S6);	_s6_opr=LIR_OprFact::single_cpu(22);  _s6_oop_opr=LIR_OprFact::single_cpu_oop(22);
   map_register(23,S7);	_s7_opr=LIR_OprFact::single_cpu(23);  _s7_oop_opr=LIR_OprFact::single_cpu_oop(23);
   map_register(24,T8);  _t8_opr=LIR_OprFact::single_cpu(24);
   map_register(25,T9);  _t9_opr=LIR_OprFact::single_cpu(25);
   map_register(26,K0);  _k0_opr=LIR_OprFact::single_cpu(26);
   map_register(27,K1);  _k1_opr=LIR_OprFact::single_cpu(27);
   map_register(28,GP);  _gp_opr=LIR_OprFact::single_cpu(28);
   map_register(29,SP);
 #ifdef _LP64
  _sp_opr=LIR_OprFact::double_cpu(29, 29);
 #else
  _sp_opr=LIR_OprFact::single_cpu(29);
 #endif
   map_register(30,FP);  _fp_opr=LIR_OprFact::single_cpu(30);
   map_register(31,RA);  _ra_opr=LIR_OprFact::single_cpu(31);
   /*
      _caller_save_cpu_regs[0] =  _v0_opr;
      _caller_save_cpu_regs[1] =  _v1_opr;
      _caller_save_cpu_regs[2] =  _a0_opr;
      _caller_save_cpu_regs[3] =  _a1_opr;
      _caller_save_cpu_regs[4] =  _a2_opr;
      _caller_save_cpu_regs[5] =  _a3_opr;
      _caller_save_cpu_regs[6] =  _t0_opr;
      _caller_save_cpu_regs[7] =  _t1_opr;
      _caller_save_cpu_regs[8] =  _t2_opr;
      _caller_save_cpu_regs[9] =  _t3_opr;
      _caller_save_cpu_regs[10] =  _t4_opr;
      _caller_save_cpu_regs[11] =  _t5_opr;
      _caller_save_cpu_regs[12] =  _t6_opr;
      _caller_save_cpu_regs[13] =  _t7_opr;
      _caller_save_cpu_regs[14] =  _s0_opr;
      _caller_save_cpu_regs[15] =  _s1_opr;
      _caller_save_cpu_regs[16] =  _s2_opr;
      _caller_save_cpu_regs[17] =  _s3_opr;
      _caller_save_cpu_regs[18] =  _s4_opr;
      _caller_save_cpu_regs[19] =  _s5_opr;
      _caller_save_cpu_regs[20] =  _s6_opr;
      _caller_save_cpu_regs[21] =  _s7_opr;
      _caller_save_cpu_regs[22] =  _v0_opr;
      _caller_save_cpu_regs[23] =  _v1_opr;
    */
   _caller_save_cpu_regs[0] =  _t0_opr;
   _caller_save_cpu_regs[1] =  _t1_opr;
   _caller_save_cpu_regs[2] =  _t2_opr;
   _caller_save_cpu_regs[3] =  _t3_opr;
 #ifndef _LP64
   _caller_save_cpu_regs[4] =  _t4_opr;
   _caller_save_cpu_regs[5] =  _t5_opr;
   _caller_save_cpu_regs[6] =  _t6_opr;
   _caller_save_cpu_regs[7] =  _t7_opr;
 #else
   _caller_save_cpu_regs[4] =  _a4_opr;
   _caller_save_cpu_regs[5] =  _a5_opr;
   _caller_save_cpu_regs[6] =  _a6_opr;
   _caller_save_cpu_regs[7] =  _a7_opr;
 #endif
   _caller_save_cpu_regs[8] =  _s0_opr;
   _caller_save_cpu_regs[9] =  _s1_opr;
   _caller_save_cpu_regs[10] =  _s2_opr;
   _caller_save_cpu_regs[11] =  _s3_opr;
   _caller_save_cpu_regs[12] =  _s4_opr;
   _caller_save_cpu_regs[13] =  _s5_opr;
   _caller_save_cpu_regs[14] =  _s6_opr;
   _caller_save_cpu_regs[15] =  _s7_opr;
   _caller_save_cpu_regs[16] =  _v0_opr;
   _caller_save_cpu_regs[17] =  _v1_opr;
   _caller_save_fpu_regs[0] = LIR_OprFact::single_fpu(0);
   _caller_save_fpu_regs[1] = LIR_OprFact::single_fpu(1);
   _caller_save_fpu_regs[2] = LIR_OprFact::single_fpu(2);
   _caller_save_fpu_regs[3] = LIR_OprFact::single_fpu(3);
   _caller_save_fpu_regs[4] = LIR_OprFact::single_fpu(4);
   _caller_save_fpu_regs[5] = LIR_OprFact::single_fpu(5);
   _caller_save_fpu_regs[6] = LIR_OprFact::single_fpu(6);
   _caller_save_fpu_regs[7] = LIR_OprFact::single_fpu(7);
   _caller_save_fpu_regs[8] = LIR_OprFact::single_fpu(8);
   _caller_save_fpu_regs[9] = LIR_OprFact::single_fpu(9);
   _caller_save_fpu_regs[10] = LIR_OprFact::single_fpu(10);
   _caller_save_fpu_regs[11] = LIR_OprFact::single_fpu(11);
   _caller_save_fpu_regs[12] = LIR_OprFact::single_fpu(12);
   _caller_save_fpu_regs[13] = LIR_OprFact::single_fpu(13);
   _caller_save_fpu_regs[14] = LIR_OprFact::single_fpu(14);
   _caller_save_fpu_regs[15] = LIR_OprFact::single_fpu(15);
 #ifdef _LP64
      _caller_save_fpu_regs[16] = LIR_OprFact::single_fpu(16);
      _caller_save_fpu_regs[17] = LIR_OprFact::single_fpu(17);
      _caller_save_fpu_regs[18] = LIR_OprFact::single_fpu(18);
      _caller_save_fpu_regs[19] = LIR_OprFact::single_fpu(19);
      _caller_save_fpu_regs[20] = LIR_OprFact::single_fpu(20);
      _caller_save_fpu_regs[21] = LIR_OprFact::single_fpu(21);
      _caller_save_fpu_regs[22] = LIR_OprFact::single_fpu(22);
      _caller_save_fpu_regs[23] = LIR_OprFact::single_fpu(23);
      _caller_save_fpu_regs[24] = LIR_OprFact::single_fpu(24);
      _caller_save_fpu_regs[25] = LIR_OprFact::single_fpu(25);
      _caller_save_fpu_regs[26] = LIR_OprFact::single_fpu(26);
      _caller_save_fpu_regs[27] = LIR_OprFact::single_fpu(27);
      _caller_save_fpu_regs[28] = LIR_OprFact::single_fpu(28);
      _caller_save_fpu_regs[29] = LIR_OprFact::single_fpu(29);
      _caller_save_fpu_regs[30] = LIR_OprFact::single_fpu(30);
      _caller_save_fpu_regs[31] = LIR_OprFact::single_fpu(31);
 #endif
   /*
       _caller_save_fpu_regs[0] = LIR_OprFact::single_fpu(0);
       _caller_save_fpu_regs[1] = LIR_OprFact::single_fpu(2);
       _caller_save_fpu_regs[2] = LIR_OprFact::single_fpu(4);
       _caller_save_fpu_regs[3] = LIR_OprFact::single_fpu(6);
       _caller_save_fpu_regs[4] = LIR_OprFact::single_fpu(8);
       _caller_save_fpu_regs[5] = LIR_OprFact::single_fpu(10);
       _caller_save_fpu_regs[6] = LIR_OprFact::single_fpu(12);
       _caller_save_fpu_regs[7] = LIR_OprFact::single_fpu(14);
       _caller_save_fpu_regs[8] = LIR_OprFact::single_fpu(16);
       _caller_save_fpu_regs[9] = LIR_OprFact::single_fpu(18);
       _caller_save_fpu_regs[10] = LIR_OprFact::single_fpu(20);
       _caller_save_fpu_regs[11] = LIR_OprFact::single_fpu(22);
       _caller_save_fpu_regs[12] = LIR_OprFact::single_fpu(24);
       _caller_save_fpu_regs[13] = LIR_OprFact::single_fpu(26);
       _caller_save_fpu_regs[14] = LIR_OprFact::single_fpu(28);
       _caller_save_fpu_regs[15] = LIR_OprFact::single_fpu(30);
    */
   for (int i = 0; i < 32; i++) {
     _fpu_regs[i] = as_FloatRegister(i);
   }
 #ifndef _LP64
   _a0_a1_long_opr=LIR_OprFact::double_cpu(4/*a0*/,5/*a1*/);
   _a2_a3_long_opr=LIR_OprFact::double_cpu(6/*a2*/,7/*a3*/);
   _v0_v1_long_opr=LIR_OprFact::double_cpu(2/*v0*/,3/*v1*/);
 #else
   _a0_a1_long_opr=LIR_OprFact::double_cpu(4/*a0*/,4/*a0*/);
   _a2_a3_long_opr=LIR_OprFact::double_cpu(6/*a2*/,6/*a2*/);
   _v0_v1_long_opr=LIR_OprFact::double_cpu(2/*v0*/,2/*v0*/);
 #endif
   _f0_float_opr  =LIR_OprFact::single_fpu(0/*f0*/);
   _f12_float_opr =LIR_OprFact::single_fpu(12/*f12*/);
   _f14_float_opr =LIR_OprFact::single_fpu(14/*f14*/);
   _d0_double_opr =LIR_OprFact::double_fpu(0/*f0*/);
   _d12_double_opr=LIR_OprFact::double_fpu(12/*f12*/);
   _d14_double_opr=LIR_OprFact::double_fpu(14/*f14*/);
   _init_done = true;
   VMRegPair regs;
   BasicType sig_bt = T_OBJECT;
   SharedRuntime::java_calling_convention(&sig_bt, &regs, 1, true);
     receiver_opr = as_oop_opr(regs.first()->as_Register());
     assert(receiver_opr == _t0_oop_opr, "rcvr ought to be t0");
 }
 Address FrameMap::make_new_address(ByteSize sp_offset) const {
   return Address(SP, in_bytes(sp_offset));
 }
 // ----------------mapping-----------------------
 // all mapping is based on rbp, addressing, except for simple leaf methods where we access
 // the locals rsp based (and no frame is built)
 // Frame for simple leaf methods (quick entries)
 //
 //   +----------+
 //   | ret addr |   <- TOS
 //   +----------+
 //   | args     |
 //   | ......   |
 // Frame for standard methods
 //
 //   | .........|  <- TOS
 //   | locals   |
 //   +----------+
 //   | old rbp,  |  <- EBP
 //   +----------+
 //   | ret addr |
 //   +----------+
 //   |  args    |
 //   | .........|
 // For OopMaps, map a local variable or spill index to an VMRegImpl name.
 // This is the offset from sp() in the frame of the slot for the index,
 // skewed by VMRegImpl::stack0 to indicate a stack location (vs.a register.)
 //
 //           framesize +
 //           stack0         stack0          0  <- VMReg
 //             |              | <registers> |
 //  ...........|..............|.............|
 //      0 1 2 3 x x 4 5 6 ... |                <- local indices
 //      ^           ^        sp()                 ( x x indicate link
 //      |           |                               and return addr)
 //  arguments   non-argument locals
 VMReg FrameMap::fpu_regname (int n) {
   // Return the OptoReg name for the fpu stack slot "n"
   // A spilled fpu stack slot comprises to two single-word OptoReg's.
   return as_FloatRegister(n)->as_VMReg();
 }
 LIR_Opr FrameMap::stack_pointer() {
   //return FrameMap::esp_opr;
   return FrameMap::_sp_opr;
 }
 // JSR 292
 LIR_Opr FrameMap::method_handle_invoke_SP_save_opr() {
   assert(SP == mh_SP_save, "must be same register");
   return _sp_opr;
 }
 bool FrameMap::validate_frame() {
   return true;
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/cpu/mips/vm/c1_FrameMap_mips.cpp@d885f8d65c58 (annotated)

src/cpu/mips/vm/c1_FrameMap_mips.cpp