1010
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1 /*
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2 * Copyright 2003-2005 Sun Microsystems, Inc. All Rights Reserved.
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3 * Copyright 2007, 2008 Red Hat, Inc.
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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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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21 * CA 95054 USA or visit www.sun.com if you need additional information or
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22 * have any questions.
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23 *
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24 */
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25
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26 class SignatureHandler {
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27 public:
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28 static SignatureHandler *from_handlerAddr(address handlerAddr) {
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29 return (SignatureHandler *) handlerAddr;
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30 }
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31
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32 public:
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33 ffi_cif* cif() const {
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34 return (ffi_cif *) this;
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35 }
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36
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37 int argument_count() const {
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38 return cif()->nargs;
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39 }
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40
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41 ffi_type** argument_types() const {
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42 return (ffi_type**) (cif() + 1);
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43 }
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44
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45 ffi_type* argument_type(int i) const {
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46 return argument_types()[i];
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47 }
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48
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49 ffi_type* result_type() const {
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50 return *(argument_types() + argument_count());
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51 }
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52
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53 protected:
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54 friend class InterpreterRuntime;
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55 friend class SignatureHandlerLibrary;
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56
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57 void finalize();
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58 };
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59
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60 class SignatureHandlerGeneratorBase : public NativeSignatureIterator {
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61 private:
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62 ffi_cif* _cif;
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63
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64 protected:
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65 SignatureHandlerGeneratorBase(methodHandle method, ffi_cif *cif)
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66 : NativeSignatureIterator(method), _cif(cif) {
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67 _cif->nargs = 0;
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68 }
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69
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70 ffi_cif *cif() const {
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71 return _cif;
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72 }
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73
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74 public:
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75 void generate(uint64_t fingerprint);
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76
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77 private:
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78 void pass_int();
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79 void pass_long();
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80 void pass_float();
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81 void pass_double();
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82 void pass_object();
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83
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84 private:
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85 void push(BasicType type);
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86 virtual void push(intptr_t value) = 0;
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87 };
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88
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89 class SignatureHandlerGenerator : public SignatureHandlerGeneratorBase {
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90 private:
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91 CodeBuffer* _cb;
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92
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93 public:
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94 SignatureHandlerGenerator(methodHandle method, CodeBuffer* buffer)
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95 : SignatureHandlerGeneratorBase(method, (ffi_cif *) buffer->code_end()),
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96 _cb(buffer) {
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97 _cb->set_code_end((address) (cif() + 1));
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98 }
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99
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100 private:
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101 void push(intptr_t value) {
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102 intptr_t *dst = (intptr_t *) _cb->code_end();
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103 _cb->set_code_end((address) (dst + 1));
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104 *dst = value;
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105 }
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106 };
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107
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108 class SlowSignatureHandlerGenerator : public SignatureHandlerGeneratorBase {
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109 private:
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110 intptr_t *_dst;
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111
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112 public:
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113 SlowSignatureHandlerGenerator(methodHandle method, intptr_t* buf)
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114 : SignatureHandlerGeneratorBase(method, (ffi_cif *) buf) {
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115 _dst = (intptr_t *) (cif() + 1);
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116 }
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117
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118 private:
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119 void push(intptr_t value) {
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120 *(_dst++) = value;
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121 }
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122
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123 public:
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124 SignatureHandler *handler() const {
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125 return (SignatureHandler *) cif();
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126 }
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127 };
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