| /* |
| * Copyright (c) 1998, 2017, Oracle and/or its affiliates. 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 "asm/assembler.hpp" |
| #include "code/relocInfo.hpp" |
| #include "nativeInst_sparc.hpp" |
| #include "oops/klass.inline.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "runtime/safepoint.hpp" |
| |
| void Relocation::pd_set_data_value(address x, intptr_t o, bool verify_only) { |
| NativeInstruction* ip = nativeInstruction_at(addr()); |
| jint inst = ip->long_at(0); |
| assert(inst != NativeInstruction::illegal_instruction(), "no breakpoint"); |
| switch (Assembler::inv_op(inst)) { |
| |
| case Assembler::ldst_op: |
| #ifdef ASSERT |
| switch (Assembler::inv_op3(inst)) { |
| case Assembler::lduw_op3: |
| case Assembler::ldub_op3: |
| case Assembler::lduh_op3: |
| case Assembler::ldd_op3: |
| case Assembler::ldsw_op3: |
| case Assembler::ldsb_op3: |
| case Assembler::ldsh_op3: |
| case Assembler::ldx_op3: |
| case Assembler::ldf_op3: |
| case Assembler::lddf_op3: |
| case Assembler::stw_op3: |
| case Assembler::stb_op3: |
| case Assembler::sth_op3: |
| case Assembler::std_op3: |
| case Assembler::stx_op3: |
| case Assembler::stf_op3: |
| case Assembler::stdf_op3: |
| case Assembler::casa_op3: |
| case Assembler::casxa_op3: |
| break; |
| default: |
| ShouldNotReachHere(); |
| } |
| goto do_non_sethi; |
| #endif |
| |
| case Assembler::arith_op: |
| #ifdef ASSERT |
| switch (Assembler::inv_op3(inst)) { |
| case Assembler::or_op3: |
| case Assembler::add_op3: |
| case Assembler::jmpl_op3: |
| break; |
| default: |
| ShouldNotReachHere(); |
| } |
| do_non_sethi:; |
| #endif |
| { |
| guarantee(Assembler::inv_immed(inst), "must have a simm13 field"); |
| int simm13 = Assembler::low10((intptr_t)x) + o; |
| guarantee(Assembler::is_simm13(simm13), "offset can't overflow simm13"); |
| inst &= ~Assembler::simm( -1, 13); |
| inst |= Assembler::simm(simm13, 13); |
| if (verify_only) { |
| guarantee(ip->long_at(0) == inst, "instructions must match"); |
| } else { |
| ip->set_long_at(0, inst); |
| } |
| } |
| break; |
| |
| case Assembler::branch_op: |
| { |
| jint inst2; |
| guarantee(Assembler::inv_op2(inst)==Assembler::sethi_op2, "must be sethi"); |
| if (format() != 0) { |
| assert(type() == relocInfo::oop_type || type() == relocInfo::metadata_type, "only narrow oops or klasses case"); |
| jint np = type() == relocInfo::oop_type ? oopDesc::encode_heap_oop((oop)x) : Klass::encode_klass((Klass*)x); |
| inst &= ~Assembler::hi22(-1); |
| inst |= Assembler::hi22((intptr_t)np); |
| if (verify_only) { |
| guarantee(ip->long_at(0) == inst, "instructions must match"); |
| } else { |
| ip->set_long_at(0, inst); |
| } |
| inst2 = ip->long_at( NativeInstruction::nop_instruction_size ); |
| guarantee(Assembler::inv_op(inst2)==Assembler::arith_op, "arith op"); |
| if (verify_only) { |
| guarantee(ip->long_at(NativeInstruction::nop_instruction_size) == NativeInstruction::set_data32_simm13( inst2, (intptr_t)np), |
| "instructions must match"); |
| } else { |
| ip->set_long_at(NativeInstruction::nop_instruction_size, NativeInstruction::set_data32_simm13( inst2, (intptr_t)np)); |
| } |
| break; |
| } |
| if (verify_only) { |
| ip->verify_data64_sethi( ip->addr_at(0), (intptr_t)x ); |
| } else { |
| ip->set_data64_sethi( ip->addr_at(0), (intptr_t)x ); |
| } |
| } |
| break; |
| |
| default: |
| guarantee(false, "instruction must perform arithmetic or memory access"); |
| } |
| } |
| |
| |
| address Relocation::pd_call_destination(address orig_addr) { |
| intptr_t adj = 0; |
| if (orig_addr != NULL) { |
| // We just moved this call instruction from orig_addr to addr(). |
| // This means its target will appear to have grown by addr() - orig_addr. |
| adj = -( addr() - orig_addr ); |
| } |
| if (NativeCall::is_call_at(addr())) { |
| NativeCall* call = nativeCall_at(addr()); |
| return call->destination() + adj; |
| } |
| if (NativeFarCall::is_call_at(addr())) { |
| NativeFarCall* call = nativeFarCall_at(addr()); |
| return call->destination() + adj; |
| } |
| // Special case: Patchable branch local to the code cache. |
| // This will break badly if the code cache grows larger than a few Mb. |
| NativeGeneralJump* br = nativeGeneralJump_at(addr()); |
| return br->jump_destination() + adj; |
| } |
| |
| |
| void Relocation::pd_set_call_destination(address x) { |
| if (NativeCall::is_call_at(addr())) { |
| NativeCall* call = nativeCall_at(addr()); |
| call->set_destination(x); |
| return; |
| } |
| if (NativeFarCall::is_call_at(addr())) { |
| NativeFarCall* call = nativeFarCall_at(addr()); |
| call->set_destination(x); |
| return; |
| } |
| // Special case: Patchable branch local to the code cache. |
| // This will break badly if the code cache grows larger than a few Mb. |
| NativeGeneralJump* br = nativeGeneralJump_at(addr()); |
| br->set_jump_destination(x); |
| } |
| |
| |
| address* Relocation::pd_address_in_code() { |
| // SPARC never embeds addresses in code, at present. |
| //assert(type() == relocInfo::oop_type, "only oops are inlined at present"); |
| return (address*)addr(); |
| } |
| |
| |
| address Relocation::pd_get_address_from_code() { |
| // SPARC never embeds addresses in code, at present. |
| //assert(type() == relocInfo::oop_type, "only oops are inlined at present"); |
| return *(address*)addr(); |
| } |
| |
| void poll_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) { |
| } |
| |
| void metadata_Relocation::pd_fix_value(address x) { |
| } |