aoqi@1: /*
aoqi@1:  * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@1:  * Copyright (c) 2015, 2016, Loongson Technology. All rights reserved.
aoqi@1:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@1:  *
aoqi@1:  * This code is free software; you can redistribute it and/or modify it
aoqi@1:  * under the terms of the GNU General Public License version 2 only, as
aoqi@1:  * published by the Free Software Foundation.
aoqi@1:  *
aoqi@1:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@1:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@1:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@1:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@1:  * accompanied this code).
aoqi@1:  *
aoqi@1:  * You should have received a copy of the GNU General Public License version
aoqi@1:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@1:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@1:  *
aoqi@1:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@1:  * or visit www.oracle.com if you need additional information or have any
aoqi@1:  * questions.
aoqi@1:  *
aoqi@1:  */
aoqi@1: 
aoqi@1: #include "precompiled.hpp"
aoqi@1: #include "asm/macroAssembler.hpp"
aoqi@1: #include "code/relocInfo.hpp"
aoqi@1: #include "nativeInst_mips.hpp"
aoqi@1: #include "oops/oop.inline.hpp"
aoqi@1: #include "runtime/safepoint.hpp"
aoqi@1: 
aoqi@1: 
aoqi@1: void Relocation::pd_set_data_value(address x, intptr_t o, bool verify_only) {
aoqi@1: #ifdef _LP64
aoqi@1:   x += o;
aoqi@1:   typedef Assembler::WhichOperand WhichOperand;
aoqi@1:   WhichOperand which = (WhichOperand) format(); // that is, disp32 or imm, call32, narrow oop
aoqi@1:   assert(which == Assembler::disp32_operand ||
aoqi@1:          which == Assembler::narrow_oop_operand ||
aoqi@1:          which == Assembler::imm_operand, "format unpacks ok");
aoqi@1:   if (which == Assembler::imm_operand) {
aoqi@1:     if (verify_only) {
aoqi@1:       assert(nativeMovConstReg_at(addr())->data() == (long)x, "instructions must match");
aoqi@1:     } else {
aoqi@1:       nativeMovConstReg_at(addr())->set_data((intptr_t)(x));
aoqi@1:     }
aoqi@1:   } else if (which == Assembler::narrow_oop_operand) {
aoqi@1:     // both compressed oops and compressed classes look the same
aoqi@1:     if (Universe::heap()->is_in_reserved((oop)x)) {
aoqi@1:       if (verify_only) {
aoqi@1:         assert(nativeMovConstReg_at(addr())->data() == (long)oopDesc::encode_heap_oop((oop)x), "instructions must match");
aoqi@1:       } else {
aoqi@1:         nativeMovConstReg_at(addr())->set_data((intptr_t)(oopDesc::encode_heap_oop((oop)x)));
aoqi@1:       }
aoqi@1:     } else {
aoqi@1:       if (verify_only) {
aoqi@1:         assert(nativeMovConstReg_at(addr())->data() == (long)Klass::encode_klass((Klass*)x), "instructions must match");
aoqi@1:       } else {
aoqi@1:         nativeMovConstReg_at(addr())->set_data((intptr_t)(Klass::encode_klass((Klass*)x)));
aoqi@1:       }
aoqi@1:     }
aoqi@1:   } else {
aoqi@1:     // Note:  Use runtime_call_type relocations for call32_operand.
aoqi@1:     assert(0, "call32_operand not supported in MIPS64");
aoqi@1:   }
aoqi@1: #else
aoqi@1:   if (verify_only) {
aoqi@1:     assert(*pd_address_in_code() == (x + o), "instructions must match");
aoqi@1:   } else {
aoqi@1:     *pd_address_in_code() = x + o;
aoqi@1:   }
aoqi@1: #endif // AMD64
aoqi@1: }
aoqi@1: 
aoqi@1: 
aoqi@1: //NOTICE HERE, this relocate is not need for MIPS, since MIPS USE abosolutly target,
aoqi@1: //Maybe We should FORGET CALL RELOCATION
aoqi@1: address Relocation::pd_call_destination(address orig_addr) {
aoqi@1:   intptr_t adj = 0;
aoqi@1:   NativeInstruction* ni = nativeInstruction_at(addr());
aoqi@1:   if (ni->is_call()) {
aoqi@1:     return nativeCall_at(addr())->destination() + adj;
aoqi@1:   } else if (ni->is_jump()) {
aoqi@1:     //return nativeJump_at(addr())->jump_destination() + adj;
aoqi@1: 		return nativeGeneralJump_at(addr())->jump_destination() + adj;
aoqi@1:   } else if (ni->is_cond_jump()) {
aoqi@1: 		return nativeCondJump_at(addr())->jump_destination() +adj;
aoqi@1:   } else {
aoqi@1:     ShouldNotReachHere();
aoqi@1:     return NULL;
aoqi@1:   }
aoqi@1: }
aoqi@1: 
aoqi@1: 
aoqi@1: void Relocation::pd_set_call_destination(address x) {
aoqi@1:   NativeInstruction* ni = nativeInstruction_at(addr());
aoqi@1:   if (ni->is_call()) {
aoqi@1:     nativeCall_at(addr())->set_destination(x);
aoqi@1:   } else if (ni->is_jump()) 
aoqi@1:     //NativeJump* nj = nativeJump_at(addr());
aoqi@1:     nativeGeneralJump_at(addr())->set_jump_destination(x);
aoqi@1:   else if (ni->is_cond_jump()) 
aoqi@1: 		nativeCondJump_at(addr())->set_jump_destination(x);
aoqi@1:   else
aoqi@1:     { ShouldNotReachHere(); }
aoqi@1: 
aoqi@1:     // Unresolved jumps are recognized by a destination of -1
aoqi@1:     // However 64bit can't actually produce such an address
aoqi@1:     // and encodes a jump to self but jump_destination will
aoqi@1:     // return a -1 as the signal. We must not relocate this
aoqi@1:     // jmp or the ic code will not see it as unresolved.
aoqi@1: /*
aoqi@1:     if (nj->jump_destination() == (address) -1) {
aoqi@1:       x = addr(); // jump to self
aoqi@1:     }
aoqi@1:     nj->set_jump_destination(x);
aoqi@1:   } else if (ni->is_cond_jump()) {
aoqi@1:     // %%%% kludge this, for now, until we get a jump_destination method
aoqi@1:     address old_dest = nativeGeneralJump_at(addr())->jump_destination();
aoqi@1:     address disp = Assembler::locate_operand(addr(), Assembler::call32_operand);
aoqi@1:     *(jint*)disp += (x - old_dest);
aoqi@1:   } else if (ni->is_mov_literal64()) {
aoqi@1:     ((NativeMovConstReg*)ni)->set_data((intptr_t)x);
aoqi@1:   } else {
aoqi@1:     ShouldNotReachHere();
aoqi@1:   }
aoqi@1: */
aoqi@1: }
aoqi@1: 
aoqi@1: 
aoqi@1: address* Relocation::pd_address_in_code() {
aoqi@1: 	//ShouldNotReachHere();
aoqi@1: 	return (address*)addr();
aoqi@1: }
aoqi@1: 
aoqi@1: 
aoqi@1: address Relocation::pd_get_address_from_code() {
aoqi@1:   tty->print_cr("%s: %d", __func__, __LINE__); //aoqi_test
aoqi@1: 	NativeMovConstReg* ni = nativeMovConstReg_at(addr());
aoqi@1: 	return (address)ni->data();
aoqi@1: }
aoqi@1: 
aoqi@1: 
aoqi@1: /*
aoqi@1: int Relocation::pd_breakpoint_size() {
aoqi@1:   // minimum breakpoint size, in short words
aoqi@1:   return NativeIllegalInstruction::instruction_size / sizeof(short);
aoqi@1: }
aoqi@1: 
aoqi@1: void Relocation::pd_swap_in_breakpoint(address x, short* instrs, int instrlen) {
aoqi@1:   Untested("pd_swap_in_breakpoint");
aoqi@1:   if (instrs != NULL) {
aoqi@1:     assert(instrlen * sizeof(short) == NativeIllegalInstruction::instruction_size, "enough instrlen in reloc. data");
aoqi@1:     for (int i = 0; i < instrlen; i++) {
aoqi@1:       instrs[i] = ((short*)x)[i];
aoqi@1:     }
aoqi@1:   }
aoqi@1:   NativeIllegalInstruction::insert(x);
aoqi@1: }
aoqi@1: 
aoqi@1: void Relocation::pd_swap_out_breakpoint(address x, short* instrs, int instrlen) {
aoqi@1:   Untested("pd_swap_out_breakpoint");
aoqi@1:   assert(NativeIllegalInstruction::instruction_size == sizeof(short), "right address unit for update");
aoqi@1:   NativeInstruction* ni = nativeInstruction_at(x);
aoqi@1:   *(short*)ni->addr_at(0) = instrs[0];
aoqi@1: }
aoqi@1: */
aoqi@1: 
aoqi@1: void poll_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) {
aoqi@1: //	Unimplemented();
aoqi@1: }
aoqi@1: 
aoqi@1: void poll_return_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) {
aoqi@1: //	Unimplemented();
aoqi@1: }
aoqi@1: 
aoqi@1: void internal_pc_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) {
aoqi@1: 	address target =0;
aoqi@1: 	NativeMovConstReg* ni = nativeMovConstReg_at(addr());
aoqi@1: 	target = new_addr_for((address)ni->data(), src, dest); 
aoqi@1: 	ni->set_data((intptr_t)target);  
aoqi@1: } 
aoqi@1: 
aoqi@1: void metadata_Relocation::pd_fix_value(address x) {
aoqi@1: }
aoqi@1: