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annotate graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotRegisterConfig.java @ 21673:5024c80224c7

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moved com.oracle.graal.[amd64|sparc] to com.oracle.jvmci.[amd64|sparc] (JBS:GRAAL-53)
author Doug Simon <doug.simon@oracle.com>
date Tue, 02 Jun 2015 22:11:52 +0200
parents 48c1ebd24120
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.graal.hotspot.amd64;
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24
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25 import com.oracle.jvmci.amd64.*;
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26 import com.oracle.jvmci.code.Register;
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27 import com.oracle.jvmci.code.RegisterConfig;
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28 import com.oracle.jvmci.code.TargetDescription;
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29 import com.oracle.jvmci.code.CallingConvention;
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30 import com.oracle.jvmci.code.StackSlot;
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31 import com.oracle.jvmci.code.RegisterAttributes;
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32 import com.oracle.jvmci.code.CalleeSaveLayout;
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33 import com.oracle.jvmci.code.Architecture;
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34 import com.oracle.jvmci.meta.JavaType;
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35 import com.oracle.jvmci.meta.Value;
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36 import com.oracle.jvmci.meta.PlatformKind;
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37 import com.oracle.jvmci.meta.AllocatableValue;
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38 import com.oracle.jvmci.meta.Kind;
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39
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40 import static com.oracle.graal.compiler.common.GraalOptions.*;
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41 import static com.oracle.jvmci.amd64.AMD64.*;
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42
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43 import java.util.*;
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44
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45 import com.oracle.jvmci.code.CallingConvention.Type;
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46 import com.oracle.graal.compiler.common.*;
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47 import com.oracle.jvmci.common.*;
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48 import com.oracle.jvmci.hotspot.*;
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49
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50 public class AMD64HotSpotRegisterConfig implements RegisterConfig {
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51
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52 private final Architecture architecture;
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53
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54 private final Register[] allocatable;
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55
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56 private final int maxFrameSize;
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57
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58 /**
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59 * The same as {@link #allocatable}, except if parameter registers are removed with the
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60 * {@link GraalOptions#RegisterPressure} option. The caller saved registers always include all
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61 * parameter registers.
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62 */
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63 private final Register[] callerSaved;
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64
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65 private final boolean allAllocatableAreCallerSaved;
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66
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67 private final RegisterAttributes[] attributesMap;
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68
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69 public int getMaximumFrameSize() {
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70 return maxFrameSize;
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71 }
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72
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73 @Override
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74 public Register[] getAllocatableRegisters() {
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75 return allocatable.clone();
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76 }
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77
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78 public Register[] filterAllocatableRegisters(PlatformKind kind, Register[] registers) {
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79 ArrayList<Register> list = new ArrayList<>();
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80 for (Register reg : registers) {
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81 if (architecture.canStoreValue(reg.getRegisterCategory(), kind)) {
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82 list.add(reg);
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83 }
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84 }
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85
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86 Register[] ret = list.toArray(new Register[list.size()]);
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87 return ret;
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88 }
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89
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90 @Override
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91 public RegisterAttributes[] getAttributesMap() {
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92 return attributesMap.clone();
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93 }
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94
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95 private final Register[] javaGeneralParameterRegisters;
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96 private final Register[] nativeGeneralParameterRegisters;
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97 private final Register[] xmmParameterRegisters = {xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7};
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98
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99 /*
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100 * Some ABIs (e.g. Windows) require a so-called "home space", that is a save area on the stack
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101 * to store the argument registers
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102 */
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103 private final boolean needsNativeStackHomeSpace;
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104
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105 private final CalleeSaveLayout csl;
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106
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107 private static Register[] initAllocatable(boolean reserveForHeapBase) {
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108 Register[] registers = null;
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109 // @formatter:off
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110 if (reserveForHeapBase) {
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111 registers = new Register[] {
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112 rax, rbx, rcx, rdx, /*rsp,*/ rbp, rsi, rdi, r8, r9, r10, r11, /*r12,*/ r13, r14, /*r15, */
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113 xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7,
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114 xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15
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115 };
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116 } else {
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117 registers = new Register[] {
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 8335
diff changeset
118 rax, rbx, rcx, rdx, /*rsp,*/ rbp, rsi, rdi, r8, r9, r10, r11, r12, r13, r14, /*r15, */
8222
7a81fbcd67bb Debug option to reduce available registers.
Roland Schatz <roland.schatz@oracle.com>
parents: 8140
diff changeset
119 xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7,
7a81fbcd67bb Debug option to reduce available registers.
Roland Schatz <roland.schatz@oracle.com>
parents: 8140
diff changeset
120 xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15
9886
d14b65dac937 Reserve r12 for heap base address when compressed oops are enabled
Christos Kotselidis <christos.kotselidis@oracle.com>
parents: 9717
diff changeset
121 };
d14b65dac937 Reserve r12 for heap base address when compressed oops are enabled
Christos Kotselidis <christos.kotselidis@oracle.com>
parents: 9717
diff changeset
122 }
d14b65dac937 Reserve r12 for heap base address when compressed oops are enabled
Christos Kotselidis <christos.kotselidis@oracle.com>
parents: 9717
diff changeset
123 // @formatter:on
d14b65dac937 Reserve r12 for heap base address when compressed oops are enabled
Christos Kotselidis <christos.kotselidis@oracle.com>
parents: 9717
diff changeset
124 return registers;
8222
7a81fbcd67bb Debug option to reduce available registers.
Roland Schatz <roland.schatz@oracle.com>
parents: 8140
diff changeset
125 }
7a81fbcd67bb Debug option to reduce available registers.
Roland Schatz <roland.schatz@oracle.com>
parents: 8140
diff changeset
126
9717
f8e0bf2c70e2 consolidated the two RegisterConfig instances for HotSpotRuntime into one
Doug Simon <doug.simon@oracle.com>
parents: 9693
diff changeset
127 public AMD64HotSpotRegisterConfig(Architecture architecture, HotSpotVMConfig config) {
15011
c8e575742f36 allow compilation with custom RegisterConfig
Lukas Stadler <lukas.stadler@oracle.com>
parents: 14989
diff changeset
128 this(architecture, config, initAllocatable(config.useCompressedOops));
c8e575742f36 allow compilation with custom RegisterConfig
Lukas Stadler <lukas.stadler@oracle.com>
parents: 14989
diff changeset
129 assert callerSaved.length == allocatable.length || RegisterPressure.getValue() != null;
c8e575742f36 allow compilation with custom RegisterConfig
Lukas Stadler <lukas.stadler@oracle.com>
parents: 14989
diff changeset
130 }
c8e575742f36 allow compilation with custom RegisterConfig
Lukas Stadler <lukas.stadler@oracle.com>
parents: 14989
diff changeset
131
c8e575742f36 allow compilation with custom RegisterConfig
Lukas Stadler <lukas.stadler@oracle.com>
parents: 14989
diff changeset
132 public AMD64HotSpotRegisterConfig(Architecture architecture, HotSpotVMConfig config, Register[] allocatable) {
9425
3ec29630cfb4 Use register categories instead of register flags.
Roland Schatz <roland.schatz@oracle.com>
parents: 9423
diff changeset
133 this.architecture = architecture;
14989
a0dbb3628f2a Allow limiting maximum frame size in register configuration and bailout if it exceeds the specified limit.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 14906
diff changeset
134 this.maxFrameSize = config.maxFrameSize;
9425
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parents: 9423
diff changeset
135
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diff changeset
136 if (config.windowsOs) {
9717
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Doug Simon <doug.simon@oracle.com>
parents: 9693
diff changeset
137 javaGeneralParameterRegisters = new Register[]{rdx, r8, r9, rdi, rsi, rcx};
f8e0bf2c70e2 consolidated the two RegisterConfig instances for HotSpotRuntime into one
Doug Simon <doug.simon@oracle.com>
parents: 9693
diff changeset
138 nativeGeneralParameterRegisters = new Register[]{rcx, rdx, r8, r9};
18598
d806707624bb amd64 register config: reserve "home space" on windows in frame.
Bernhard Urban <bernhard.urban@jku.at>
parents: 18355
diff changeset
139 this.needsNativeStackHomeSpace = true;
3733
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parents:
diff changeset
140 } else {
9717
f8e0bf2c70e2 consolidated the two RegisterConfig instances for HotSpotRuntime into one
Doug Simon <doug.simon@oracle.com>
parents: 9693
diff changeset
141 javaGeneralParameterRegisters = new Register[]{rsi, rdx, rcx, r8, r9, rdi};
f8e0bf2c70e2 consolidated the two RegisterConfig instances for HotSpotRuntime into one
Doug Simon <doug.simon@oracle.com>
parents: 9693
diff changeset
142 nativeGeneralParameterRegisters = new Register[]{rdi, rsi, rdx, rcx, r8, r9};
18598
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Bernhard Urban <bernhard.urban@jku.at>
parents: 18355
diff changeset
143 this.needsNativeStackHomeSpace = false;
3733
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parents:
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144 }
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parents:
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145
9717
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Doug Simon <doug.simon@oracle.com>
parents: 9693
diff changeset
146 csl = null;
15011
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Lukas Stadler <lukas.stadler@oracle.com>
parents: 14989
diff changeset
147 this.allocatable = allocatable.clone();
13343
5dd9670009df fixed: parameter registers missing from caller saved set if excluded with the RegisterPressure option
Erik Eckstein <erik.eckstein@oracle.com>
parents: 9896
diff changeset
148 Set<Register> callerSaveSet = new HashSet<>();
5dd9670009df fixed: parameter registers missing from caller saved set if excluded with the RegisterPressure option
Erik Eckstein <erik.eckstein@oracle.com>
parents: 9896
diff changeset
149 Collections.addAll(callerSaveSet, allocatable);
5dd9670009df fixed: parameter registers missing from caller saved set if excluded with the RegisterPressure option
Erik Eckstein <erik.eckstein@oracle.com>
parents: 9896
diff changeset
150 Collections.addAll(callerSaveSet, xmmParameterRegisters);
5dd9670009df fixed: parameter registers missing from caller saved set if excluded with the RegisterPressure option
Erik Eckstein <erik.eckstein@oracle.com>
parents: 9896
diff changeset
151 Collections.addAll(callerSaveSet, javaGeneralParameterRegisters);
5dd9670009df fixed: parameter registers missing from caller saved set if excluded with the RegisterPressure option
Erik Eckstein <erik.eckstein@oracle.com>
parents: 9896
diff changeset
152 Collections.addAll(callerSaveSet, nativeGeneralParameterRegisters);
5dd9670009df fixed: parameter registers missing from caller saved set if excluded with the RegisterPressure option
Erik Eckstein <erik.eckstein@oracle.com>
parents: 9896
diff changeset
153 callerSaved = callerSaveSet.toArray(new Register[callerSaveSet.size()]);
5dd9670009df fixed: parameter registers missing from caller saved set if excluded with the RegisterPressure option
Erik Eckstein <erik.eckstein@oracle.com>
parents: 9896
diff changeset
154
14614
abf7cf57df5e added RegisterConfig.areAllAllocatableRegistersCallerSaved()
Doug Simon <doug.simon@oracle.com>
parents: 14560
diff changeset
155 allAllocatableAreCallerSaved = true;
5547
b6617d13ea44 Dropping Ci* prefixes. Some additional renamings in the api.code interface.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 5540
diff changeset
156 attributesMap = RegisterAttributes.createMap(this, AMD64.allRegisters);
3733
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parents:
diff changeset
157 }
e233f5660da4 Added Java files from Maxine project.
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parents:
diff changeset
158
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
159 @Override
5547
b6617d13ea44 Dropping Ci* prefixes. Some additional renamings in the api.code interface.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 5540
diff changeset
160 public Register[] getCallerSaveRegisters() {
13343
5dd9670009df fixed: parameter registers missing from caller saved set if excluded with the RegisterPressure option
Erik Eckstein <erik.eckstein@oracle.com>
parents: 9896
diff changeset
161 return callerSaved;
3733
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parents:
diff changeset
162 }
e233f5660da4 Added Java files from Maxine project.
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parents:
diff changeset
163
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
164 @Override
14614
abf7cf57df5e added RegisterConfig.areAllAllocatableRegistersCallerSaved()
Doug Simon <doug.simon@oracle.com>
parents: 14560
diff changeset
165 public boolean areAllAllocatableRegistersCallerSaved() {
abf7cf57df5e added RegisterConfig.areAllAllocatableRegistersCallerSaved()
Doug Simon <doug.simon@oracle.com>
parents: 14560
diff changeset
166 return allAllocatableAreCallerSaved;
abf7cf57df5e added RegisterConfig.areAllAllocatableRegistersCallerSaved()
Doug Simon <doug.simon@oracle.com>
parents: 14560
diff changeset
167 }
abf7cf57df5e added RegisterConfig.areAllAllocatableRegistersCallerSaved()
Doug Simon <doug.simon@oracle.com>
parents: 14560
diff changeset
168
abf7cf57df5e added RegisterConfig.areAllAllocatableRegistersCallerSaved()
Doug Simon <doug.simon@oracle.com>
parents: 14560
diff changeset
169 @Override
5547
b6617d13ea44 Dropping Ci* prefixes. Some additional renamings in the api.code interface.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 5540
diff changeset
170 public Register getRegisterForRole(int index) {
3733
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parents:
diff changeset
171 throw new UnsupportedOperationException();
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parents:
diff changeset
172 }
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parents:
diff changeset
173
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parents:
diff changeset
174 @Override
7300
2912b72d840a More complete and reusable Word type
Christian Wimmer <christian.wimmer@oracle.com>
parents: 7098
diff changeset
175 public CallingConvention getCallingConvention(Type type, JavaType returnType, JavaType[] parameterTypes, TargetDescription target, boolean stackOnly) {
3733
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parents:
diff changeset
176 if (type == Type.NativeCall) {
7364
1489cd4eabe7 added support for making calls with the native/C ABI
Doug Simon <doug.simon@oracle.com>
parents: 7300
diff changeset
177 return callingConvention(nativeGeneralParameterRegisters, returnType, parameterTypes, type, target, stackOnly);
3733
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parents:
diff changeset
178 }
9717
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Doug Simon <doug.simon@oracle.com>
parents: 9693
diff changeset
179 // On x64, parameter locations are the same whether viewed
f8e0bf2c70e2 consolidated the two RegisterConfig instances for HotSpotRuntime into one
Doug Simon <doug.simon@oracle.com>
parents: 9693
diff changeset
180 // from the caller or callee perspective
7364
1489cd4eabe7 added support for making calls with the native/C ABI
Doug Simon <doug.simon@oracle.com>
parents: 7300
diff changeset
181 return callingConvention(javaGeneralParameterRegisters, returnType, parameterTypes, type, target, stackOnly);
3733
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parents:
diff changeset
182 }
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parents:
diff changeset
183
9425
3ec29630cfb4 Use register categories instead of register flags.
Roland Schatz <roland.schatz@oracle.com>
parents: 9423
diff changeset
184 public Register[] getCallingConventionRegisters(Type type, Kind kind) {
3ec29630cfb4 Use register categories instead of register flags.
Roland Schatz <roland.schatz@oracle.com>
parents: 9423
diff changeset
185 if (architecture.canStoreValue(XMM, kind)) {
6521
2a0c9f20baa1 consolidated framework for runtime and stub calls and moved declaration of descriptors for such calls to the source file in which they are used
Doug Simon <doug.simon@oracle.com>
parents: 6495
diff changeset
186 return xmmParameterRegisters;
2a0c9f20baa1 consolidated framework for runtime and stub calls and moved declaration of descriptors for such calls to the source file in which they are used
Doug Simon <doug.simon@oracle.com>
parents: 6495
diff changeset
187 }
9425
3ec29630cfb4 Use register categories instead of register flags.
Roland Schatz <roland.schatz@oracle.com>
parents: 9423
diff changeset
188 assert architecture.canStoreValue(CPU, kind);
7364
1489cd4eabe7 added support for making calls with the native/C ABI
Doug Simon <doug.simon@oracle.com>
parents: 7300
diff changeset
189 return type == Type.NativeCall ? nativeGeneralParameterRegisters : javaGeneralParameterRegisters;
3733
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parents:
diff changeset
190 }
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parents:
diff changeset
191
7364
1489cd4eabe7 added support for making calls with the native/C ABI
Doug Simon <doug.simon@oracle.com>
parents: 7300
diff changeset
192 private CallingConvention callingConvention(Register[] generalParameterRegisters, JavaType returnType, JavaType[] parameterTypes, Type type, TargetDescription target, boolean stackOnly) {
9296
1342574c4f7d Move targets can only be AllocatableValues.
Roland Schatz <roland.schatz@oracle.com>
parents: 8338
diff changeset
193 AllocatableValue[] locations = new AllocatableValue[parameterTypes.length];
3733
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parents:
diff changeset
194
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
195 int currentGeneral = 0;
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
196 int currentXMM = 0;
18598
d806707624bb amd64 register config: reserve "home space" on windows in frame.
Bernhard Urban <bernhard.urban@jku.at>
parents: 18355
diff changeset
197 int currentStackOffset = type == Type.NativeCall && needsNativeStackHomeSpace ? generalParameterRegisters.length * target.wordSize : 0;
3733
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parents:
diff changeset
198
7300
2912b72d840a More complete and reusable Word type
Christian Wimmer <christian.wimmer@oracle.com>
parents: 7098
diff changeset
199 for (int i = 0; i < parameterTypes.length; i++) {
2912b72d840a More complete and reusable Word type
Christian Wimmer <christian.wimmer@oracle.com>
parents: 7098
diff changeset
200 final Kind kind = parameterTypes[i].getKind();
3733
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parents:
diff changeset
201
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parents:
diff changeset
202 switch (kind) {
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parents:
diff changeset
203 case Byte:
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
204 case Boolean:
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
205 case Short:
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
206 case Char:
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
207 case Int:
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
208 case Long:
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
209 case Object:
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
210 if (!stackOnly && currentGeneral < generalParameterRegisters.length) {
5547
b6617d13ea44 Dropping Ci* prefixes. Some additional renamings in the api.code interface.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 5540
diff changeset
211 Register register = generalParameterRegisters[currentGeneral++];
16094
c0b8d395368b Introduce LIRKind to accurately track oop references in backend.
Roland Schatz <roland.schatz@oracle.com>
parents: 15259
diff changeset
212 locations[i] = register.asValue(target.getLIRKind(kind));
3733
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
213 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
214 break;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
215 case Float:
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
216 case Double:
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
217 if (!stackOnly && currentXMM < xmmParameterRegisters.length) {
5547
b6617d13ea44 Dropping Ci* prefixes. Some additional renamings in the api.code interface.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 5540
diff changeset
218 Register register = xmmParameterRegisters[currentXMM++];
16094
c0b8d395368b Introduce LIRKind to accurately track oop references in backend.
Roland Schatz <roland.schatz@oracle.com>
parents: 15259
diff changeset
219 locations[i] = register.asValue(target.getLIRKind(kind));
3733
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parents:
diff changeset
220 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
221 break;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
222 default:
21543
93c50cefb9e8 moved GraalInternalError to com.oracle.jvmci.common and renamed it to JVMCIError (JBS:GRAAL-53)
Doug Simon <doug.simon@oracle.com>
parents: 21526
diff changeset
223 throw JVMCIError.shouldNotReachHere();
3733
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
224 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
225
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
226 if (locations[i] == null) {
16094
c0b8d395368b Introduce LIRKind to accurately track oop references in backend.
Roland Schatz <roland.schatz@oracle.com>
parents: 15259
diff changeset
227 locations[i] = StackSlot.get(target.getLIRKind(kind.getStackKind()), currentStackOffset, !type.out);
14559
883fbd3e06e0 Make size of PlatformKind overridable by VM specific code.
Roland Schatz <roland.schatz@oracle.com>
parents: 14003
diff changeset
228 currentStackOffset += Math.max(target.getSizeInBytes(kind), target.wordSize);
3733
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parents:
diff changeset
229 }
e233f5660da4 Added Java files from Maxine project.
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parents:
diff changeset
230 }
e233f5660da4 Added Java files from Maxine project.
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parents:
diff changeset
231
7300
2912b72d840a More complete and reusable Word type
Christian Wimmer <christian.wimmer@oracle.com>
parents: 7098
diff changeset
232 Kind returnKind = returnType == null ? Kind.Void : returnType.getKind();
16094
c0b8d395368b Introduce LIRKind to accurately track oop references in backend.
Roland Schatz <roland.schatz@oracle.com>
parents: 15259
diff changeset
233 AllocatableValue returnLocation = returnKind == Kind.Void ? Value.ILLEGAL : getReturnRegister(returnKind).asValue(target.getLIRKind(returnKind.getStackKind()));
6470
b1010f7bc0bf expanded CallingConvention API class to also include the location of the value (if any) returned by a call
Doug Simon <doug.simon@oracle.com>
parents: 6413
diff changeset
234 return new CallingConvention(currentStackOffset, returnLocation, locations);
3733
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parents:
diff changeset
235 }
e233f5660da4 Added Java files from Maxine project.
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parents:
diff changeset
236
e233f5660da4 Added Java files from Maxine project.
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parents:
diff changeset
237 @Override
5547
b6617d13ea44 Dropping Ci* prefixes. Some additional renamings in the api.code interface.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 5540
diff changeset
238 public Register getReturnRegister(Kind kind) {
3733
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parents:
diff changeset
239 switch (kind) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
240 case Boolean:
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
241 case Byte:
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
242 case Char:
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
243 case Short:
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
244 case Int:
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
245 case Long:
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
246 case Object:
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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247 return rax;
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248 case Float:
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249 case Double:
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250 return xmm0;
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251 case Void:
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252 case Illegal:
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253 return null;
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254 default:
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255 throw new UnsupportedOperationException("no return register for type " + kind);
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256 }
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257 }
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258
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259 @Override
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260 public Register getFrameRegister() {
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261 return rsp;
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262 }
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263
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264 public CalleeSaveLayout getCalleeSaveLayout() {
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265 return csl;
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266 }
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267
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268 @Override
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269 public String toString() {
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270 return String.format("Allocatable: " + Arrays.toString(getAllocatableRegisters()) + "%n" + "CallerSave: " + Arrays.toString(getCallerSaveRegisters()) + "%n");
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271 }
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272 }