Mercurial > hg > truffle
comparison src/cpu/ppc/vm/relocInfo_ppc.cpp @ 14408:ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
Summary: With this change the HotSpot core build works on Linux/PPC64. The VM succesfully executes simple test programs.
Reviewed-by: kvn
author | goetz |
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date | Fri, 02 Aug 2013 16:46:45 +0200 |
parents | |
children | 7687c56b6693 |
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14407:94c202aa2646 | 14408:ec28f9c041ff |
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1 /* | |
2 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. | |
3 * Copyright 2012, 2013 SAP AG. All rights reserved. | |
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
5 * | |
6 * This code is free software; you can redistribute it and/or modify it | |
7 * under the terms of the GNU General Public License version 2 only, as | |
8 * published by the Free Software Foundation. | |
9 * | |
10 * This code is distributed in the hope that it will be useful, but WITHOUT | |
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
13 * version 2 for more details (a copy is included in the LICENSE file that | |
14 * accompanied this code). | |
15 * | |
16 * You should have received a copy of the GNU General Public License version | |
17 * 2 along with this work; if not, write to the Free Software Foundation, | |
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
19 * | |
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
21 * or visit www.oracle.com if you need additional information or have any | |
22 * questions. | |
23 * | |
24 */ | |
25 | |
26 #include "precompiled.hpp" | |
27 #include "asm/assembler.inline.hpp" | |
28 #include "assembler_ppc.inline.hpp" | |
29 #include "code/relocInfo.hpp" | |
30 #include "nativeInst_ppc.hpp" | |
31 #include "oops/oop.inline.hpp" | |
32 #include "runtime/safepoint.hpp" | |
33 | |
34 void Relocation::pd_set_data_value(address x, intptr_t o, bool verify_only) { | |
35 bool copy_back_to_oop_pool = true; // TODO: PPC port | |
36 // The following comment is from the declaration of DataRelocation: | |
37 // | |
38 // "The "o" (displacement) argument is relevant only to split relocations | |
39 // on RISC machines. In some CPUs (SPARC), the set-hi and set-lo ins'ns | |
40 // can encode more than 32 bits between them. This allows compilers to | |
41 // share set-hi instructions between addresses that differ by a small | |
42 // offset (e.g., different static variables in the same class). | |
43 // On such machines, the "x" argument to set_value on all set-lo | |
44 // instructions must be the same as the "x" argument for the | |
45 // corresponding set-hi instructions. The "o" arguments for the | |
46 // set-hi instructions are ignored, and must not affect the high-half | |
47 // immediate constant. The "o" arguments for the set-lo instructions are | |
48 // added into the low-half immediate constant, and must not overflow it." | |
49 // | |
50 // Currently we don't support splitting of relocations, so o must be | |
51 // zero: | |
52 assert(o == 0, "tried to split relocations"); | |
53 | |
54 if (!verify_only) { | |
55 if (format() != 1) { | |
56 nativeMovConstReg_at(addr())->set_data_plain(((intptr_t)x), code()); | |
57 } else { | |
58 assert(type() == relocInfo::oop_type || type() == relocInfo::metadata_type, | |
59 "how to encode else?"); | |
60 narrowOop no = (type() == relocInfo::oop_type) ? | |
61 oopDesc::encode_heap_oop((oop)x) : oopDesc::encode_klass((Klass*)x); | |
62 nativeMovConstReg_at(addr())->set_narrow_oop(no, code()); | |
63 } | |
64 } else { | |
65 assert((address) (nativeMovConstReg_at(addr())->data()) == x, "data must match"); | |
66 } | |
67 } | |
68 | |
69 address Relocation::pd_call_destination(address orig_addr) { | |
70 intptr_t adj = 0; | |
71 address inst_loc = addr(); | |
72 | |
73 if (orig_addr != NULL) { | |
74 // We just moved this call instruction from orig_addr to addr(). | |
75 // This means its target will appear to have grown by addr() - orig_addr. | |
76 adj = -(inst_loc - orig_addr); | |
77 } | |
78 if (NativeFarCall::is_far_call_at(inst_loc)) { | |
79 NativeFarCall* call = nativeFarCall_at(inst_loc); | |
80 return call->destination() + (intptr_t)(call->is_pcrelative() ? adj : 0); | |
81 } else if (NativeJump::is_jump_at(inst_loc)) { | |
82 NativeJump* jump = nativeJump_at(inst_loc); | |
83 return jump->jump_destination() + (intptr_t)(jump->is_pcrelative() ? adj : 0); | |
84 } else if (NativeConditionalFarBranch::is_conditional_far_branch_at(inst_loc)) { | |
85 NativeConditionalFarBranch* branch = NativeConditionalFarBranch_at(inst_loc); | |
86 return branch->branch_destination(); | |
87 } else { | |
88 // There are two instructions at the beginning of a stub, therefore we | |
89 // load at orig_addr + 8. | |
90 orig_addr = nativeCall_at(inst_loc)->get_trampoline(); | |
91 if (orig_addr == NULL) { | |
92 return (address) -1; | |
93 } else { | |
94 return (address) nativeMovConstReg_at(orig_addr + 8)->data(); | |
95 } | |
96 } | |
97 } | |
98 | |
99 void Relocation::pd_set_call_destination(address x) { | |
100 address inst_loc = addr(); | |
101 | |
102 if (NativeFarCall::is_far_call_at(inst_loc)) { | |
103 NativeFarCall* call = nativeFarCall_at(inst_loc); | |
104 call->set_destination(x); | |
105 } else if (NativeJump::is_jump_at(inst_loc)) { | |
106 NativeJump* jump= nativeJump_at(inst_loc); | |
107 jump->set_jump_destination(x); | |
108 } else if (NativeConditionalFarBranch::is_conditional_far_branch_at(inst_loc)) { | |
109 NativeConditionalFarBranch* branch = NativeConditionalFarBranch_at(inst_loc); | |
110 branch->set_branch_destination(x); | |
111 } else { | |
112 NativeCall* call = nativeCall_at(inst_loc); | |
113 call->set_destination_mt_safe(x, false); | |
114 } | |
115 } | |
116 | |
117 address* Relocation::pd_address_in_code() { | |
118 ShouldNotReachHere(); | |
119 return 0; | |
120 } | |
121 | |
122 address Relocation::pd_get_address_from_code() { | |
123 return (address)(nativeMovConstReg_at(addr())->data()); | |
124 } | |
125 | |
126 void poll_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) { | |
127 } | |
128 | |
129 void poll_return_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) { | |
130 } | |
131 | |
132 void metadata_Relocation::pd_fix_value(address x) { | |
133 } |