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annotate c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/HotSpotSignature.java @ 1422:3483ec571caf

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* using reflected objects instead of oops * removed scratch from allocatable registers * instanceof xir snippet * arraylength xir snippet * exceptionobject xir snippet * VMEntries and VMExits as interfaces * calls to VMEntries and VMExits are routet through logging proxies
author Lukas Stadler <lukas.stadler@oracle.com>
date Mon, 02 Aug 2010 15:44:38 -0700
parents 6223633ce7dd
children 760213a60e8b
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1 package com.sun.hotspot.c1x;
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2
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3 import java.util.ArrayList;
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4 import java.util.List;
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5
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6 import com.sun.cri.ci.CiKind;
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7 import com.sun.cri.ri.RiSignature;
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8 import com.sun.cri.ri.RiType;
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9
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10 public class HotSpotSignature implements RiSignature {
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11
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12 private final List<String> arguments = new ArrayList<String>();
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13 private final String returnType;
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14 private final String originalString;
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15
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16 public HotSpotSignature(String signature) {
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17 assert signature.length() > 0;
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18 this.originalString = signature;
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19
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20 if (signature.charAt(0) == '(') {
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21 int cur = 1;
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22 while (cur < signature.length() && signature.charAt(cur) != ')') {
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23 int nextCur = parseSignature(signature, cur);
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24 arguments.add(signature.substring(cur, nextCur));
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25 cur = nextCur;
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26 }
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27 StringBuilder str = new StringBuilder();
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28 for (String param : arguments) {
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29 str.append(param).append(", ");
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30 }
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31 Logger.log("signature " + signature + ": " + str);
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32
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33 cur++;
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34 int nextCur = parseSignature(signature, cur);
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35 returnType = signature.substring(cur, nextCur);
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36 assert nextCur == signature.length();
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37 } else {
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38 returnType = null;
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39 }
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40 }
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41
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42 private int parseSignature(String signature, int cur) {
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43
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44 char first = signature.charAt(cur);
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45 switch (first) {
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46 case '[':
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47 return parseSignature(signature, cur + 1);
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48 case 'L':
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49 while (signature.charAt(cur) != ';')
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50 cur++;
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51 cur++;
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52 break;
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53 case 'V':
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54 case 'I':
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55 case 'B':
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56 case 'C':
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57 case 'D':
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58 case 'F':
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59 case 'J':
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60 case 'S':
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61 case 'Z':
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62 cur++;
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63 break;
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64 default:
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65 assert false;
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66 }
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67 return cur;
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68 }
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69
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70 @Override
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71 public int argumentCount(boolean withReceiver) {
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72 return arguments.size() + (withReceiver ? 1 : 0);
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73 }
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74
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75 @Override
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76 public CiKind argumentKindAt(int index) {
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77 CiKind kind = CiKind.fromTypeString(arguments.get(index));
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78 System.out.println("argument kind: " + index + " is " + kind);
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79 return kind;
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80 }
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81
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82 @Override
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83 public int argumentSlots(boolean withReceiver) {
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84
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85 int argSlots = 0;
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86 for (int i = 0; i < argumentCount(false); i++) {
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87 argSlots += argumentKindAt(i).sizeInSlots();
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88 }
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89
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90 return argSlots + (withReceiver ? 1 : 0);
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91 }
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92
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93 @Override
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94 public RiType argumentTypeAt(int index, RiType accessingClass) {
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95 Class<?> accessor = null;
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96 if (accessingClass instanceof HotSpotType) {
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97 accessor = ((HotSpotType) accessingClass).klass;
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98 }
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99 return Compiler.getVMEntries().RiSignature_lookupType(arguments.get(index), accessor);
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100 }
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101
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102 @Override
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103 public String asString() {
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104 return originalString;
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105 }
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106
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107 @Override
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108 public CiKind returnKind() {
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109 return CiKind.fromTypeString(returnType);
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110 }
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111
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112 @Override
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113 public RiType returnType(RiType accessingClass) {
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114 Class<?> accessor = null;
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115 if (accessingClass instanceof HotSpotType) {
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116 accessor = ((HotSpotType) accessingClass).klass;
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117 }
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118 return Compiler.getVMEntries().RiSignature_lookupType(returnType, accessor);
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119 }
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120
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121 }