Tue, 17 Oct 2017 12:58:25 +0800
merge
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * Copyright 2012, 2013 SAP AG. All rights reserved. |
aoqi@0 | 4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 5 | * |
aoqi@0 | 6 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 7 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 8 | * published by the Free Software Foundation. |
aoqi@0 | 9 | * |
aoqi@0 | 10 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 13 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 14 | * accompanied this code). |
aoqi@0 | 15 | * |
aoqi@0 | 16 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 17 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 18 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 19 | * |
aoqi@0 | 20 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 21 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 22 | * questions. |
aoqi@0 | 23 | * |
aoqi@0 | 24 | */ |
aoqi@0 | 25 | |
aoqi@0 | 26 | #include "precompiled.hpp" |
aoqi@0 | 27 | #include "asm/assembler.inline.hpp" |
aoqi@0 | 28 | #include "assembler_ppc.inline.hpp" |
aoqi@0 | 29 | #include "code/relocInfo.hpp" |
aoqi@0 | 30 | #include "nativeInst_ppc.hpp" |
aoqi@0 | 31 | #include "oops/oop.inline.hpp" |
aoqi@0 | 32 | #include "runtime/safepoint.hpp" |
aoqi@0 | 33 | |
aoqi@0 | 34 | void Relocation::pd_set_data_value(address x, intptr_t o, bool verify_only) { |
aoqi@0 | 35 | bool copy_back_to_oop_pool = true; // TODO: PPC port |
aoqi@0 | 36 | // The following comment is from the declaration of DataRelocation: |
aoqi@0 | 37 | // |
aoqi@0 | 38 | // "The "o" (displacement) argument is relevant only to split relocations |
aoqi@0 | 39 | // on RISC machines. In some CPUs (SPARC), the set-hi and set-lo ins'ns |
aoqi@0 | 40 | // can encode more than 32 bits between them. This allows compilers to |
aoqi@0 | 41 | // share set-hi instructions between addresses that differ by a small |
aoqi@0 | 42 | // offset (e.g., different static variables in the same class). |
aoqi@0 | 43 | // On such machines, the "x" argument to set_value on all set-lo |
aoqi@0 | 44 | // instructions must be the same as the "x" argument for the |
aoqi@0 | 45 | // corresponding set-hi instructions. The "o" arguments for the |
aoqi@0 | 46 | // set-hi instructions are ignored, and must not affect the high-half |
aoqi@0 | 47 | // immediate constant. The "o" arguments for the set-lo instructions are |
aoqi@0 | 48 | // added into the low-half immediate constant, and must not overflow it." |
aoqi@0 | 49 | // |
aoqi@0 | 50 | // Currently we don't support splitting of relocations, so o must be |
aoqi@0 | 51 | // zero: |
aoqi@0 | 52 | assert(o == 0, "tried to split relocations"); |
aoqi@0 | 53 | |
aoqi@0 | 54 | if (!verify_only) { |
aoqi@0 | 55 | if (format() != 1) { |
aoqi@0 | 56 | nativeMovConstReg_at(addr())->set_data_plain(((intptr_t)x), code()); |
aoqi@0 | 57 | } else { |
aoqi@0 | 58 | assert(type() == relocInfo::oop_type || type() == relocInfo::metadata_type, |
aoqi@0 | 59 | "how to encode else?"); |
aoqi@0 | 60 | narrowOop no = (type() == relocInfo::oop_type) ? |
aoqi@0 | 61 | oopDesc::encode_heap_oop((oop)x) : Klass::encode_klass((Klass*)x); |
aoqi@0 | 62 | nativeMovConstReg_at(addr())->set_narrow_oop(no, code()); |
aoqi@0 | 63 | } |
aoqi@0 | 64 | } else { |
aoqi@0 | 65 | assert((address) (nativeMovConstReg_at(addr())->data()) == x, "data must match"); |
aoqi@0 | 66 | } |
aoqi@0 | 67 | } |
aoqi@0 | 68 | |
aoqi@0 | 69 | address Relocation::pd_call_destination(address orig_addr) { |
aoqi@0 | 70 | intptr_t adj = 0; |
aoqi@0 | 71 | address inst_loc = addr(); |
aoqi@0 | 72 | |
aoqi@0 | 73 | if (orig_addr != NULL) { |
aoqi@0 | 74 | // We just moved this call instruction from orig_addr to addr(). |
aoqi@0 | 75 | // This means its target will appear to have grown by addr() - orig_addr. |
aoqi@0 | 76 | adj = -(inst_loc - orig_addr); |
aoqi@0 | 77 | } |
aoqi@0 | 78 | if (NativeFarCall::is_far_call_at(inst_loc)) { |
aoqi@0 | 79 | NativeFarCall* call = nativeFarCall_at(inst_loc); |
aoqi@0 | 80 | return call->destination() + (intptr_t)(call->is_pcrelative() ? adj : 0); |
aoqi@0 | 81 | } else if (NativeJump::is_jump_at(inst_loc)) { |
aoqi@0 | 82 | NativeJump* jump = nativeJump_at(inst_loc); |
aoqi@0 | 83 | return jump->jump_destination() + (intptr_t)(jump->is_pcrelative() ? adj : 0); |
aoqi@0 | 84 | } else if (NativeConditionalFarBranch::is_conditional_far_branch_at(inst_loc)) { |
aoqi@0 | 85 | NativeConditionalFarBranch* branch = NativeConditionalFarBranch_at(inst_loc); |
aoqi@0 | 86 | return branch->branch_destination(); |
aoqi@0 | 87 | } else { |
aoqi@0 | 88 | // There are two instructions at the beginning of a stub, therefore we |
aoqi@0 | 89 | // load at orig_addr + 8. |
aoqi@0 | 90 | orig_addr = nativeCall_at(inst_loc)->get_trampoline(); |
aoqi@0 | 91 | if (orig_addr == NULL) { |
aoqi@0 | 92 | return (address) -1; |
aoqi@0 | 93 | } else { |
aoqi@0 | 94 | return (address) nativeMovConstReg_at(orig_addr + 8)->data(); |
aoqi@0 | 95 | } |
aoqi@0 | 96 | } |
aoqi@0 | 97 | } |
aoqi@0 | 98 | |
aoqi@0 | 99 | void Relocation::pd_set_call_destination(address x) { |
aoqi@0 | 100 | address inst_loc = addr(); |
aoqi@0 | 101 | |
aoqi@0 | 102 | if (NativeFarCall::is_far_call_at(inst_loc)) { |
aoqi@0 | 103 | NativeFarCall* call = nativeFarCall_at(inst_loc); |
aoqi@0 | 104 | call->set_destination(x); |
aoqi@0 | 105 | } else if (NativeJump::is_jump_at(inst_loc)) { |
aoqi@0 | 106 | NativeJump* jump= nativeJump_at(inst_loc); |
aoqi@0 | 107 | jump->set_jump_destination(x); |
aoqi@0 | 108 | } else if (NativeConditionalFarBranch::is_conditional_far_branch_at(inst_loc)) { |
aoqi@0 | 109 | NativeConditionalFarBranch* branch = NativeConditionalFarBranch_at(inst_loc); |
aoqi@0 | 110 | branch->set_branch_destination(x); |
aoqi@0 | 111 | } else { |
aoqi@0 | 112 | NativeCall* call = nativeCall_at(inst_loc); |
aoqi@0 | 113 | call->set_destination_mt_safe(x, false); |
aoqi@0 | 114 | } |
aoqi@0 | 115 | } |
aoqi@0 | 116 | |
aoqi@0 | 117 | address* Relocation::pd_address_in_code() { |
aoqi@0 | 118 | ShouldNotReachHere(); |
aoqi@0 | 119 | return 0; |
aoqi@0 | 120 | } |
aoqi@0 | 121 | |
aoqi@0 | 122 | address Relocation::pd_get_address_from_code() { |
aoqi@0 | 123 | return (address)(nativeMovConstReg_at(addr())->data()); |
aoqi@0 | 124 | } |
aoqi@0 | 125 | |
aoqi@0 | 126 | void poll_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) { |
aoqi@0 | 127 | } |
aoqi@0 | 128 | |
aoqi@0 | 129 | void poll_return_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) { |
aoqi@0 | 130 | } |
aoqi@0 | 131 | |
aoqi@0 | 132 | void metadata_Relocation::pd_fix_value(address x) { |
aoqi@0 | 133 | } |