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comparison src/cpu/ppc/vm/relocInfo_ppc.cpp @ 14408:ec28f9c041ff

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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
date Fri, 02 Aug 2013 16:46:45 +0200
parents
children 7687c56b6693
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14407:94c202aa2646 14408:ec28f9c041ff
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 }