Mercurial > hg > truffle
annotate src/cpu/ppc/vm/relocInfo_ppc.cpp @ 18357:09550eb6ddfb
replace use of '==' with .equals()
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 12 Nov 2014 15:33:20 +0100 |
parents | 7687c56b6693 |
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rev | line source |
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1 /* |
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2 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. |
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3 * Copyright 2012, 2013 SAP AG. All rights reserved. |
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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5 * |
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6 * This code is free software; you can redistribute it and/or modify it |
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7 * under the terms of the GNU General Public License version 2 only, as |
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8 * published by the Free Software Foundation. |
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9 * |
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10 * This code is distributed in the hope that it will be useful, but WITHOUT |
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 * version 2 for more details (a copy is included in the LICENSE file that |
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14 * accompanied this code). |
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15 * |
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16 * You should have received a copy of the GNU General Public License version |
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17 * 2 along with this work; if not, write to the Free Software Foundation, |
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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19 * |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
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23 * |
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24 */ |
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25 |
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26 #include "precompiled.hpp" |
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27 #include "asm/assembler.inline.hpp" |
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28 #include "assembler_ppc.inline.hpp" |
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29 #include "code/relocInfo.hpp" |
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30 #include "nativeInst_ppc.hpp" |
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31 #include "oops/oop.inline.hpp" |
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32 #include "runtime/safepoint.hpp" |
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33 |
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34 void Relocation::pd_set_data_value(address x, intptr_t o, bool verify_only) { |
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35 bool copy_back_to_oop_pool = true; // TODO: PPC port |
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36 // The following comment is from the declaration of DataRelocation: |
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37 // |
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38 // "The "o" (displacement) argument is relevant only to split relocations |
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39 // on RISC machines. In some CPUs (SPARC), the set-hi and set-lo ins'ns |
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40 // can encode more than 32 bits between them. This allows compilers to |
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41 // share set-hi instructions between addresses that differ by a small |
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42 // offset (e.g., different static variables in the same class). |
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43 // On such machines, the "x" argument to set_value on all set-lo |
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44 // instructions must be the same as the "x" argument for the |
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45 // corresponding set-hi instructions. The "o" arguments for the |
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46 // set-hi instructions are ignored, and must not affect the high-half |
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47 // immediate constant. The "o" arguments for the set-lo instructions are |
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48 // added into the low-half immediate constant, and must not overflow it." |
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49 // |
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50 // Currently we don't support splitting of relocations, so o must be |
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51 // zero: |
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52 assert(o == 0, "tried to split relocations"); |
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53 |
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54 if (!verify_only) { |
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55 if (format() != 1) { |
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56 nativeMovConstReg_at(addr())->set_data_plain(((intptr_t)x), code()); |
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57 } else { |
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58 assert(type() == relocInfo::oop_type || type() == relocInfo::metadata_type, |
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59 "how to encode else?"); |
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60 narrowOop no = (type() == relocInfo::oop_type) ? |
14413 | 61 oopDesc::encode_heap_oop((oop)x) : Klass::encode_klass((Klass*)x); |
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62 nativeMovConstReg_at(addr())->set_narrow_oop(no, code()); |
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63 } |
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64 } else { |
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65 assert((address) (nativeMovConstReg_at(addr())->data()) == x, "data must match"); |
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66 } |
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67 } |
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68 |
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69 address Relocation::pd_call_destination(address orig_addr) { |
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70 intptr_t adj = 0; |
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71 address inst_loc = addr(); |
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72 |
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73 if (orig_addr != NULL) { |
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74 // We just moved this call instruction from orig_addr to addr(). |
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75 // This means its target will appear to have grown by addr() - orig_addr. |
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76 adj = -(inst_loc - orig_addr); |
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77 } |
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78 if (NativeFarCall::is_far_call_at(inst_loc)) { |
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79 NativeFarCall* call = nativeFarCall_at(inst_loc); |
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80 return call->destination() + (intptr_t)(call->is_pcrelative() ? adj : 0); |
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81 } else if (NativeJump::is_jump_at(inst_loc)) { |
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82 NativeJump* jump = nativeJump_at(inst_loc); |
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83 return jump->jump_destination() + (intptr_t)(jump->is_pcrelative() ? adj : 0); |
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84 } else if (NativeConditionalFarBranch::is_conditional_far_branch_at(inst_loc)) { |
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85 NativeConditionalFarBranch* branch = NativeConditionalFarBranch_at(inst_loc); |
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86 return branch->branch_destination(); |
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87 } else { |
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88 // There are two instructions at the beginning of a stub, therefore we |
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89 // load at orig_addr + 8. |
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90 orig_addr = nativeCall_at(inst_loc)->get_trampoline(); |
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91 if (orig_addr == NULL) { |
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92 return (address) -1; |
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93 } else { |
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94 return (address) nativeMovConstReg_at(orig_addr + 8)->data(); |
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95 } |
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96 } |
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97 } |
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98 |
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99 void Relocation::pd_set_call_destination(address x) { |
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100 address inst_loc = addr(); |
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101 |
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102 if (NativeFarCall::is_far_call_at(inst_loc)) { |
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103 NativeFarCall* call = nativeFarCall_at(inst_loc); |
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104 call->set_destination(x); |
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105 } else if (NativeJump::is_jump_at(inst_loc)) { |
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106 NativeJump* jump= nativeJump_at(inst_loc); |
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107 jump->set_jump_destination(x); |
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108 } else if (NativeConditionalFarBranch::is_conditional_far_branch_at(inst_loc)) { |
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109 NativeConditionalFarBranch* branch = NativeConditionalFarBranch_at(inst_loc); |
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110 branch->set_branch_destination(x); |
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111 } else { |
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112 NativeCall* call = nativeCall_at(inst_loc); |
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113 call->set_destination_mt_safe(x, false); |
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114 } |
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115 } |
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116 |
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117 address* Relocation::pd_address_in_code() { |
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118 ShouldNotReachHere(); |
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119 return 0; |
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120 } |
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121 |
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122 address Relocation::pd_get_address_from_code() { |
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123 return (address)(nativeMovConstReg_at(addr())->data()); |
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124 } |
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125 |
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126 void poll_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) { |
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127 } |
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128 |
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129 void poll_return_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) { |
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130 } |
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131 |
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132 void metadata_Relocation::pd_fix_value(address x) { |
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133 } |