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

     1 /*

     2  * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.

     3  * Copyright (c) 2015, 2016, Loongson Technology. All rights reserved.

     4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     5  *

     6  * This code is free software; you can redistribute it and/or modify it

     7  * under the terms of the GNU General Public License version 2 only, as

     8  * published by the Free Software Foundation.

     9  *

    10  * This code is distributed in the hope that it will be useful, but WITHOUT

    11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    13  * version 2 for more details (a copy is included in the LICENSE file that

    14  * accompanied this code).

    15  *

    16  * You should have received a copy of the GNU General Public License version

    17  * 2 along with this work; if not, write to the Free Software Foundation,

    18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    19  *

    20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    21  * or visit www.oracle.com if you need additional information or have any

    22  * questions.

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    24  */

    26 #include "precompiled.hpp"

    27 #include "asm/macroAssembler.hpp"

    28 #include "code/relocInfo.hpp"

    29 #include "nativeInst_mips.hpp"

    30 #include "oops/oop.inline.hpp"

    31 #include "runtime/safepoint.hpp"

    34 void Relocation::pd_set_data_value(address x, intptr_t o, bool verify_only) {

    35 #ifdef _LP64

    36   x += o;

    37   typedef Assembler::WhichOperand WhichOperand;

    38   WhichOperand which = (WhichOperand) format(); // that is, disp32 or imm, call32, narrow oop

    39   assert(which == Assembler::disp32_operand ||

    40          which == Assembler::narrow_oop_operand ||

    41          which == Assembler::imm_operand, "format unpacks ok");

    42   if (which == Assembler::imm_operand) {

    43     if (verify_only) {

    44       assert(nativeMovConstReg_at(addr())->data() == (long)x, "instructions must match");

    45     } else {

    46       nativeMovConstReg_at(addr())->set_data((intptr_t)(x));

    47     }

    48   } else if (which == Assembler::narrow_oop_operand) {

    49     // both compressed oops and compressed classes look the same

    50     if (Universe::heap()->is_in_reserved((oop)x)) {

    51       if (verify_only) {

    52         assert(nativeMovConstReg_at(addr())->data() == (long)oopDesc::encode_heap_oop((oop)x), "instructions must match");

    53       } else {

    54         nativeMovConstReg_at(addr())->set_data((intptr_t)(oopDesc::encode_heap_oop((oop)x)));

    55       }

    56     } else {

    57       if (verify_only) {

    58         assert(nativeMovConstReg_at(addr())->data() == (long)Klass::encode_klass((Klass*)x), "instructions must match");

    59       } else {

    60         nativeMovConstReg_at(addr())->set_data((intptr_t)(Klass::encode_klass((Klass*)x)));

    61       }

    62     }

    63   } else {

    64     // Note:  Use runtime_call_type relocations for call32_operand.

    65     assert(0, "call32_operand not supported in MIPS64");

    66   }

    67 #else

    68   if (verify_only) {

    69     assert(*pd_address_in_code() == (x + o), "instructions must match");

    70   } else {

    71     *pd_address_in_code() = x + o;

    72   }

    73 #endif // AMD64

    74 }

    77 //NOTICE HERE, this relocate is not need for MIPS, since MIPS USE abosolutly target,

    78 //Maybe We should FORGET CALL RELOCATION

    79 address Relocation::pd_call_destination(address orig_addr) {

    80   intptr_t adj = 0;

    81   NativeInstruction* ni = nativeInstruction_at(addr());

    82   if (ni->is_call()) {

    83     return nativeCall_at(addr())->destination() + adj;

    84   } else if (ni->is_jump()) {

    85     //return nativeJump_at(addr())->jump_destination() + adj;

    86 		return nativeGeneralJump_at(addr())->jump_destination() + adj;

    87   } else if (ni->is_cond_jump()) {

    88 		return nativeCondJump_at(addr())->jump_destination() +adj;

    89   } else {

    90     ShouldNotReachHere();

    91     return NULL;

    92   }

    93 }

    96 void Relocation::pd_set_call_destination(address x) {

    97   NativeInstruction* ni = nativeInstruction_at(addr());

    98   if (ni->is_call()) {

    99     nativeCall_at(addr())->set_destination(x);

   100   } else if (ni->is_jump())

   101     //NativeJump* nj = nativeJump_at(addr());

   102     nativeGeneralJump_at(addr())->set_jump_destination(x);

   103   else if (ni->is_cond_jump())

   104 		nativeCondJump_at(addr())->set_jump_destination(x);

   105   else

   106     { ShouldNotReachHere(); }

   108     // Unresolved jumps are recognized by a destination of -1

   109     // However 64bit can't actually produce such an address

   110     // and encodes a jump to self but jump_destination will

   111     // return a -1 as the signal. We must not relocate this

   112     // jmp or the ic code will not see it as unresolved.

   113 /*

   114     if (nj->jump_destination() == (address) -1) {

   115       x = addr(); // jump to self

   116     }

   117     nj->set_jump_destination(x);

   118   } else if (ni->is_cond_jump()) {

   119     // %%%% kludge this, for now, until we get a jump_destination method

   120     address old_dest = nativeGeneralJump_at(addr())->jump_destination();

   121     address disp = Assembler::locate_operand(addr(), Assembler::call32_operand);

   122     *(jint*)disp += (x - old_dest);

   123   } else if (ni->is_mov_literal64()) {

   124     ((NativeMovConstReg*)ni)->set_data((intptr_t)x);

   125   } else {

   126     ShouldNotReachHere();

   127   }

   128 */

   129 }

   132 address* Relocation::pd_address_in_code() {

   133 	//ShouldNotReachHere();

   134 	return (address*)addr();

   135 }

   138 address Relocation::pd_get_address_from_code() {

   139   tty->print_cr("%s: %d", __func__, __LINE__); //aoqi_test

   140 	NativeMovConstReg* ni = nativeMovConstReg_at(addr());

   141 	return (address)ni->data();

   142 }

   145 /*

   146 int Relocation::pd_breakpoint_size() {

   147   // minimum breakpoint size, in short words

   148   return NativeIllegalInstruction::instruction_size / sizeof(short);

   149 }

   151 void Relocation::pd_swap_in_breakpoint(address x, short* instrs, int instrlen) {

   152   Untested("pd_swap_in_breakpoint");

   153   if (instrs != NULL) {

   154     assert(instrlen * sizeof(short) == NativeIllegalInstruction::instruction_size, "enough instrlen in reloc. data");

   155     for (int i = 0; i < instrlen; i++) {

   156       instrs[i] = ((short*)x)[i];

   157     }

   158   }

   159   NativeIllegalInstruction::insert(x);

   160 }

   162 void Relocation::pd_swap_out_breakpoint(address x, short* instrs, int instrlen) {

   163   Untested("pd_swap_out_breakpoint");

   164   assert(NativeIllegalInstruction::instruction_size == sizeof(short), "right address unit for update");

   165   NativeInstruction* ni = nativeInstruction_at(x);

   166   *(short*)ni->addr_at(0) = instrs[0];

   167 }

   168 */

   170 void poll_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) {

   171 //	Unimplemented();

   172 }

   174 void poll_return_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) {

   175 //	Unimplemented();

   176 }

   178 void internal_pc_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) {

   179 	address target =0;

   180 	NativeMovConstReg* ni = nativeMovConstReg_at(addr());

   181 	target = new_addr_for((address)ni->data(), src, dest);

   182 	ni->set_data((intptr_t)target);

   183 }

   185 void metadata_Relocation::pd_fix_value(address x) {

   186 }

src/cpu/mips/vm/relocInfo_mips.cpp@d885f8d65c58