| /* |
| * Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved. |
| * Copyright (c) 2012, 2015 SAP SE. 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.inline.hpp" |
| #include "code/relocInfo.hpp" |
| #include "nativeInst_ppc.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) { |
| // The following comment is from the declaration of DataRelocation: |
| // |
| // "The "o" (displacement) argument is relevant only to split relocations |
| // on RISC machines. In some CPUs (SPARC), the set-hi and set-lo ins'ns |
| // can encode more than 32 bits between them. This allows compilers to |
| // share set-hi instructions between addresses that differ by a small |
| // offset (e.g., different static variables in the same class). |
| // On such machines, the "x" argument to set_value on all set-lo |
| // instructions must be the same as the "x" argument for the |
| // corresponding set-hi instructions. The "o" arguments for the |
| // set-hi instructions are ignored, and must not affect the high-half |
| // immediate constant. The "o" arguments for the set-lo instructions are |
| // added into the low-half immediate constant, and must not overflow it." |
| // |
| // Currently we don't support splitting of relocations, so o must be |
| // zero: |
| assert(o == 0, "tried to split relocations"); |
| |
| if (!verify_only) { |
| if (format() != 1) { |
| nativeMovConstReg_at(addr())->set_data_plain(((intptr_t)x), code()); |
| } else { |
| assert(type() == relocInfo::oop_type || type() == relocInfo::metadata_type, |
| "how to encode else?"); |
| narrowOop no = (type() == relocInfo::oop_type) ? |
| oopDesc::encode_heap_oop((oop)x) : Klass::encode_klass((Klass*)x); |
| nativeMovConstReg_at(addr())->set_narrow_oop(no, code()); |
| } |
| } else { |
| guarantee((address) (nativeMovConstReg_at(addr())->data()) == x, "data must match"); |
| } |
| } |
| |
| address Relocation::pd_call_destination(address orig_addr) { |
| intptr_t adj = 0; |
| address inst_loc = addr(); |
| |
| 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 = -(inst_loc - orig_addr); |
| } |
| if (NativeFarCall::is_far_call_at(inst_loc)) { |
| NativeFarCall* call = nativeFarCall_at(inst_loc); |
| return call->destination() + (intptr_t)(call->is_pcrelative() ? adj : 0); |
| } else if (NativeJump::is_jump_at(inst_loc)) { |
| NativeJump* jump = nativeJump_at(inst_loc); |
| return jump->jump_destination() + (intptr_t)(jump->is_pcrelative() ? adj : 0); |
| } else if (NativeConditionalFarBranch::is_conditional_far_branch_at(inst_loc)) { |
| NativeConditionalFarBranch* branch = NativeConditionalFarBranch_at(inst_loc); |
| return branch->branch_destination(); |
| } else { |
| orig_addr = nativeCall_at(inst_loc)->get_trampoline(); |
| if (orig_addr == NULL) { |
| return (address) -1; |
| } else { |
| return ((NativeCallTrampolineStub*)orig_addr)->destination(); |
| } |
| } |
| } |
| |
| void Relocation::pd_set_call_destination(address x) { |
| address inst_loc = addr(); |
| |
| if (NativeFarCall::is_far_call_at(inst_loc)) { |
| NativeFarCall* call = nativeFarCall_at(inst_loc); |
| call->set_destination(x); |
| } else if (NativeJump::is_jump_at(inst_loc)) { |
| NativeJump* jump= nativeJump_at(inst_loc); |
| jump->set_jump_destination(x); |
| } else if (NativeConditionalFarBranch::is_conditional_far_branch_at(inst_loc)) { |
| NativeConditionalFarBranch* branch = NativeConditionalFarBranch_at(inst_loc); |
| branch->set_branch_destination(x); |
| } else { |
| NativeCall* call = nativeCall_at(inst_loc); |
| call->set_destination_mt_safe(x, false); |
| } |
| } |
| |
| address* Relocation::pd_address_in_code() { |
| ShouldNotReachHere(); |
| return 0; |
| } |
| |
| address Relocation::pd_get_address_from_code() { |
| return (address)(nativeMovConstReg_at(addr())->data()); |
| } |
| |
| void poll_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) { |
| } |
| |
| void metadata_Relocation::pd_fix_value(address x) { |
| } |