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annotate src/gpu/ptx/vm/ptxKernelArguments.hpp @ 13212:eb03a7335eb0

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Use fixed instead of virtual register for target in far foreign call, since the register allocator does not support virtual registers to be used at call sites.
author Christian Wimmer <christian.wimmer@oracle.com>
date Mon, 02 Dec 2013 14:20:32 -0800
parents 1a7e7011a341
children 220ed109bf77
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2013, 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 */
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24
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25 #ifndef KERNEL_ARGUMENTS_PTX_HPP
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26 #define KERNEL_ARGUMENTS_PTX_HPP
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27
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28 #include "runtime/gpu.hpp"
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29 #include "runtime/signature.hpp"
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30
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31 #define T_BYTE_SIZE 1
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32 #define T_BOOLEAN_SIZE 4
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33 #define T_INT_BYTE_SIZE 4
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34 #define T_FLOAT_BYTE_SIZE 4
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35 #define T_DOUBLE_BYTE_SIZE 8
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36 #define T_LONG_BYTE_SIZE 8
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37 #define T_ARRAY_BYTE_SIZE 8
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38
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39 class PTXKernelArguments : public SignatureIterator {
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40 public:
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41 // Buffer holding CUdeviceptr values that represent the kernel arguments
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42 char _kernelArgBuffer[1024];
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43 // Current offset into _kernelArgBuffer
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44 size_t _bufferOffset;
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45 // Device pointer holding return value
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46 gpu::Ptx::CUdeviceptr _dev_return_value;
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47
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48 private:
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49 // Array of java argument oops
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50 arrayOop _args;
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51 // Current index into _args
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52 int _index;
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53 // Flag to indicate successful creation of kernel argument buffer
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54 bool _success;
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55
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56 // Get next java argument
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57 oop next_arg(BasicType expectedType);
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58
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59 public:
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60 PTXKernelArguments(Symbol* signature, arrayOop args, bool is_static) : SignatureIterator(signature) {
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61 this->_return_type = T_ILLEGAL;
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62 _index = 0;
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63 _args = args;
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64 _success = true;
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65 _bufferOffset = 0;
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66 _dev_return_value = 0;
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67 if (!is_static) {
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68 // TODO : Create a device argument for receiver object and add it to _kernelBuffer
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69 tty->print_cr("{CUDA] ****** TODO: Support for execution of non-static java methods not implemented yet.");
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70 }
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71 // Iterate over the entire signature
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72 iterate();
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73 assert((_success && (_index == args->length())), "arg count mismatch with signature");
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74 }
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75
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76 inline char* device_argument_buffer() {
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77 return _kernelArgBuffer;
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78 }
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79
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80 inline size_t device_argument_buffer_size() {
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81 return _bufferOffset;
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82 }
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83
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84 // Get the return oop value
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85 oop get_return_oop();
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86
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87 // get device return value ptr
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88 gpu::Ptx::CUdeviceptr get_dev_return_value() {
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89 return _dev_return_value;
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90 }
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91
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92 /*
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93 * Pad kernel argument buffer to naturally align for given size.
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94 */
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95 void pad_kernel_argument_buffer(size_t);
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96
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97 void do_byte();
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98 void do_bool();
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99 void do_int();
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100 void do_float();
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101 void do_double();
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102 void do_long();
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103 void do_array(int begin, int end);
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104 void do_void();
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105
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106 inline void do_char() {
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107 /* TODO : To be implemented */
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108 guarantee(false, "do_char:NYI");
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109 }
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110 inline void do_short() {
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111 /* TODO : To be implemented */
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112 guarantee(false, "do_short:NYI");
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113 }
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114 inline void do_object() {
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115 /* TODO : To be implemented */
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116 guarantee(false, "do_object:NYI");
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117 }
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118
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119 inline void do_object(int begin, int end) {
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120 /* TODO : To be implemented */
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121 guarantee(false, "do_object(II):NYI");
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122 }
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123
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124 };
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125
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126 #endif // KERNEL_ARGUMENTS_HPP