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annotate src/gpu/hsail/vm/gpu_hsail_Frame.hpp @ 18915:037dc6f7d3c4

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Remove obsolete comment.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Tue, 20 Jan 2015 17:10:20 +0100
parents e9998e2be7f5
children
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1 /*
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2 * Copyright (c) 2014, 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 GPU_HSAIL_VM_GPU_HSAIL_FRAME_HPP
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26 #define GPU_HSAIL_VM_GPU_HSAIL_FRAME_HPP
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27
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28 #include "graal/graalEnv.hpp"
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29 #include "code/debugInfo.hpp"
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30 #include "code/location.hpp"
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31
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32 class HSAILFrame VALUE_OBJ_CLASS_SPEC {
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33 friend class VMStructs;
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34 private:
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35 jint _pc_offset; // The HSAIL "pc_offset" where the exception happens
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36 jbyte _num_s_regs;
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37 jbyte _num_d_regs;
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38 jshort _num_stack_slots;
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40 jbyte* data_start() {return (jbyte*) this + sizeof(*this); }
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41 int sreg_ofst_start() { return 0; }
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42 int dreg_ofst_start() { return sreg_ofst_start() + num_s_regs() * sizeof(jint); }
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43 int stackslot_ofst_start() { return dreg_ofst_start() + num_d_regs() * sizeof(jlong); }
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44
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45 int sreg_ofst(int idx) {
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46 assert(idx >= 0 && idx < num_s_regs(), "bad sreg index");
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47 return sreg_ofst_start() + idx * sizeof(jint);
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48 }
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49
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50 int dreg_ofst(int idx) {
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51 assert(idx >= 0 && idx < num_d_regs(), "bad dreg index");
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52 return dreg_ofst_start() + idx * sizeof(jlong);
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53 }
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54
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55 int stackslot_ofst(int stackOffset) {
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56 assert(stackOffset >= 0 && (unsigned int) stackOffset < num_stack_slots() * sizeof(jlong), "bad stackoffset");
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57 return stackslot_ofst_start() + stackOffset;
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58 }
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59
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60 // the _ptr versions just return a pointer to the indicated d reg or stackslot64
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61 // some of these are used for oops_do processing
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62 jint* get_s_reg_ptr(int idx) {
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63 return((jint*) (data_start() + sreg_ofst(idx)));
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64 }
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65
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66 jlong* get_d_reg_ptr(int idx) {
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67 return((jlong*) (data_start() + dreg_ofst(idx)));
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68 }
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69
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70 jlong* get_stackslot64_ptr(int stackOffset) {
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71 return((jlong*) (data_start() + stackslot_ofst(stackOffset)));
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72 }
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73
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74 jint* get_stackslot32_ptr(int stackOffset) {
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75 return((jint*) (data_start() + stackslot_ofst(stackOffset)));
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76 }
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77
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78 void* get_oop_ptr_for_bit(int bit) {
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79 void* oop_ptr;
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80 if (bit < num_d_regs()) {
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81 // d register
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82 oop_ptr = (void*) get_d_reg_ptr(bit);
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83 } else {
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84 // stack slot
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85 int stackOffset = (bit - num_d_regs()) * 8; // 8 bytes per stack slot
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86 oop_ptr = (void*) get_stackslot64_ptr(stackOffset);
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87 }
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88 return oop_ptr;
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89 }
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90
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91 public:
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92 // Accessors
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93 jint pc_offset() { return _pc_offset; }
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94 jint num_s_regs() {return _num_s_regs; }
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95 jint num_d_regs() {return _num_d_regs; }
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96 jint num_stack_slots() {return _num_stack_slots; }
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97
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98 jlong get_oop_for_bit(int bit) {
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99 return * (jlong *) get_oop_ptr_for_bit(bit);
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100 }
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101
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102 // do the oops from this frame
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103 void oops_do(OopClosure* f, HSAILOopMapHelper* oopMapHelper) {
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104 int oops_per_deopt = num_d_regs() + num_stack_slots();
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105
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106 // handle the dregister and stackSlot based oops
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107 for (int bit = 0; bit < oops_per_deopt; bit++) {
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108 if (oopMapHelper->is_oop(pc_offset(), bit)) {
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109 void* oop_ptr = get_oop_ptr_for_bit(bit);
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110 // the oops we are dealing with here in the hsailFrame are always uncompressed
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111 oop old_oop = oopDesc::load_heap_oop((oop *)oop_ptr);
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112 f->do_oop((oop*) oop_ptr);
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113 if (TraceGPUInteraction) {
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114 oop new_oop = oopDesc::load_heap_oop((oop *)oop_ptr);
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115 tty->print_cr("bit=%d, oop_ptr=%p, old=%p, new=%p", bit, oop_ptr, (void *)old_oop, (void *)new_oop);
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116 }
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117 }
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118 }
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119 }
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120 };
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121
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122 #endif // GPU_HSAIL_VM_GPU_HSAIL_FRAME_HPP