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1010
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1 /*
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2 * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved.
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3 * Copyright 2007, 2008, 2009 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 #include "incls/_precompiled.incl"
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27 #include "incls/_frame_zero.cpp.incl"
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28
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29 #ifdef ASSERT
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30 void RegisterMap::check_location_valid() {
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31 ShouldNotCallThis();
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32 }
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33 #endif
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34
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35 bool frame::is_interpreted_frame() const {
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36 return zeroframe()->is_interpreter_frame();
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37 }
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38
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39 bool frame::is_fake_stub_frame() const {
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40 return zeroframe()->is_fake_stub_frame();
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41 }
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42
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43 frame frame::sender_for_entry_frame(RegisterMap *map) const {
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44 assert(map != NULL, "map must be set");
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45 assert(!entry_frame_is_first(), "next Java fp must be non zero");
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46 assert(entry_frame_call_wrapper()->anchor()->last_Java_sp() == sender_sp(),
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47 "sender should be next Java frame");
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48 map->clear();
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49 assert(map->include_argument_oops(), "should be set by clear");
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50 return frame(sender_sp(), sp() + 1);
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51 }
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52
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53 frame frame::sender_for_interpreter_frame(RegisterMap *map) const {
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54 return frame(sender_sp(), sp() + 1);
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55 }
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56
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57 frame frame::sender_for_compiled_frame(RegisterMap *map) const {
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58 return frame(sender_sp(), sp() + 1);
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59 }
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60
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61 frame frame::sender_for_fake_stub_frame(RegisterMap *map) const {
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62 return frame(sender_sp(), sp() + 1);
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63 }
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64
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65 frame frame::sender(RegisterMap* map) const {
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66 // Default is not to follow arguments; the various
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67 // sender_for_xxx methods update this accordingly.
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68 map->set_include_argument_oops(false);
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69
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70 if (is_entry_frame())
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71 return sender_for_entry_frame(map);
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72
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73 if (is_interpreted_frame())
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74 return sender_for_interpreter_frame(map);
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75
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76 if (is_compiled_frame())
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77 return sender_for_compiled_frame(map);
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78
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79 if (is_fake_stub_frame())
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80 return sender_for_fake_stub_frame(map);
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81
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82 ShouldNotReachHere();
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83 }
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84
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85 #ifdef CC_INTERP
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86 BasicObjectLock* frame::interpreter_frame_monitor_begin() const {
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87 return get_interpreterState()->monitor_base();
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88 }
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89
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90 BasicObjectLock* frame::interpreter_frame_monitor_end() const {
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91 return (BasicObjectLock*) get_interpreterState()->stack_base();
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92 }
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93 #endif // CC_INTERP
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94
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95 void frame::patch_pc(Thread* thread, address pc) {
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96 // We borrow this call to set the thread pointer in the interpreter
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97 // state; the hook to set up deoptimized frames isn't supplied it.
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98 assert(pc == NULL, "should be");
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99 get_interpreterState()->set_thread((JavaThread *) thread);
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100 }
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101
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102 bool frame::safe_for_sender(JavaThread *thread) {
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103 ShouldNotCallThis();
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104 }
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105
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106 void frame::pd_gc_epilog() {
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107 }
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108
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109 bool frame::is_interpreted_frame_valid(JavaThread *thread) const {
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110 ShouldNotCallThis();
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111 }
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112
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113 BasicType frame::interpreter_frame_result(oop* oop_result,
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114 jvalue* value_result) {
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115 assert(is_interpreted_frame(), "interpreted frame expected");
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116 methodOop method = interpreter_frame_method();
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117 BasicType type = method->result_type();
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118 intptr_t* tos_addr = (intptr_t *) interpreter_frame_tos_address();
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119 oop obj;
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120
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121 switch (type) {
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122 case T_VOID:
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123 break;
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124 case T_BOOLEAN:
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125 value_result->z = *(jboolean *) tos_addr;
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126 break;
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127 case T_BYTE:
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128 value_result->b = *(jbyte *) tos_addr;
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129 break;
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130 case T_CHAR:
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131 value_result->c = *(jchar *) tos_addr;
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132 break;
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133 case T_SHORT:
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134 value_result->s = *(jshort *) tos_addr;
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135 break;
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136 case T_INT:
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137 value_result->i = *(jint *) tos_addr;
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138 break;
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139 case T_LONG:
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140 value_result->j = *(jlong *) tos_addr;
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141 break;
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142 case T_FLOAT:
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143 value_result->f = *(jfloat *) tos_addr;
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144 break;
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145 case T_DOUBLE:
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146 value_result->d = *(jdouble *) tos_addr;
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147 break;
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148
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149 case T_OBJECT:
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150 case T_ARRAY:
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151 if (method->is_native()) {
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152 obj = get_interpreterState()->oop_temp();
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153 }
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154 else {
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155 oop* obj_p = (oop *) tos_addr;
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156 obj = (obj_p == NULL) ? (oop) NULL : *obj_p;
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157 }
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158 assert(obj == NULL || Universe::heap()->is_in(obj), "sanity check");
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159 *oop_result = obj;
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160 break;
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161
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162 default:
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163 ShouldNotReachHere();
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164 }
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165
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166 return type;
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167 }
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168
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169 int frame::frame_size(RegisterMap* map) const {
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170 #ifdef PRODUCT
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171 ShouldNotCallThis();
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172 #else
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173 return 0; // make javaVFrame::print_value work
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174 #endif // PRODUCT
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175 }
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176
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177 intptr_t* frame::interpreter_frame_tos_at(jint offset) const {
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178 int index = (Interpreter::expr_offset_in_bytes(offset) / wordSize);
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179 return &interpreter_frame_tos_address()[index];
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180 }
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181
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182 void frame::zero_print_on_error(int frame_index,
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183 outputStream* st,
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184 char* buf,
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185 int buflen) const {
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186 // Divide the buffer between the field and the value
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187 buflen >>= 1;
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188 char *fieldbuf = buf;
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189 char *valuebuf = buf + buflen;
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190
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191 // Print each word of the frame
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192 for (intptr_t *addr = fp(); addr <= sp(); addr++) {
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193 int offset = sp() - addr;
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194
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195 // Fill in default values, then try and improve them
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196 snprintf(fieldbuf, buflen, "word[%d]", offset);
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197 snprintf(valuebuf, buflen, PTR_FORMAT, *addr);
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198 zeroframe()->identify_word(frame_index, offset, fieldbuf, valuebuf, buflen);
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199 fieldbuf[buflen - 1] = '\0';
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200 valuebuf[buflen - 1] = '\0';
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201
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202 // Print the result
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203 st->print_cr(" " PTR_FORMAT ": %-21s = %s", addr, fieldbuf, valuebuf);
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204 }
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205 }
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206
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207 void ZeroFrame::identify_word(int frame_index,
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208 int offset,
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209 char* fieldbuf,
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210 char* valuebuf,
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211 int buflen) const {
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212 switch (offset) {
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213 case next_frame_off:
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214 strncpy(fieldbuf, "next_frame", buflen);
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215 break;
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216
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217 case frame_type_off:
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218 strncpy(fieldbuf, "frame_type", buflen);
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219 if (is_entry_frame())
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220 strncpy(valuebuf, "ENTRY_FRAME", buflen);
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221 else if (is_interpreter_frame())
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222 strncpy(valuebuf, "INTERPRETER_FRAME", buflen);
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223 else if (is_shark_frame())
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224 strncpy(valuebuf, "SHARK_FRAME", buflen);
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225 else if (is_fake_stub_frame())
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226 strncpy(valuebuf, "FAKE_STUB_FRAME", buflen);
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227 break;
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228
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229 default:
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230 if (is_entry_frame()) {
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231 as_entry_frame()->identify_word(
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232 frame_index, offset, fieldbuf, valuebuf, buflen);
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233 }
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234 else if (is_interpreter_frame()) {
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235 as_interpreter_frame()->identify_word(
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236 frame_index, offset, fieldbuf, valuebuf, buflen);
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237 }
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238 else if (is_shark_frame()) {
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239 as_shark_frame()->identify_word(
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240 frame_index, offset, fieldbuf, valuebuf, buflen);
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241 }
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242 else if (is_fake_stub_frame()) {
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243 as_fake_stub_frame()->identify_word(
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244 frame_index, offset, fieldbuf, valuebuf, buflen);
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245 }
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246 }
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247 }
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248
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249 void EntryFrame::identify_word(int frame_index,
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250 int offset,
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251 char* fieldbuf,
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252 char* valuebuf,
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253 int buflen) const {
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254 switch (offset) {
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255 case call_wrapper_off:
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256 strncpy(fieldbuf, "call_wrapper", buflen);
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257 break;
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258
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259 default:
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260 snprintf(fieldbuf, buflen, "local[%d]", offset - 3);
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261 }
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262 }
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263
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264 void InterpreterFrame::identify_word(int frame_index,
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265 int offset,
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266 char* fieldbuf,
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267 char* valuebuf,
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268 int buflen) const {
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269 interpreterState istate = interpreter_state();
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270 bool is_valid = istate->self_link() == istate;
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271 intptr_t *addr = addr_of_word(offset);
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272
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273 // Fixed part
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274 if (addr >= (intptr_t *) istate) {
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275 const char *field = istate->name_of_field_at_address((address) addr);
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276 if (field) {
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277 if (is_valid && !strcmp(field, "_method")) {
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278 istate->method()->name_and_sig_as_C_string(valuebuf, buflen);
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279 }
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280 else if (is_valid && !strcmp(field, "_bcp") && istate->bcp()) {
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281 snprintf(valuebuf, buflen, PTR_FORMAT " (bci %d)",
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282 (intptr_t) istate->bcp(),
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283 istate->method()->bci_from(istate->bcp()));
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284 }
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285 snprintf(fieldbuf, buflen, "%sistate->%s",
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286 field[strlen(field) - 1] == ')' ? "(": "", field);
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287 }
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288 else if (addr == (intptr_t *) istate) {
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289 strncpy(fieldbuf, "(vtable for istate)", buflen);
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290 }
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291 return;
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292 }
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293
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294 // Variable part
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295 if (!is_valid)
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296 return;
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297
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298 // JNI stuff
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299 if (istate->method()->is_native() && addr < istate->stack_base()) {
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300 address hA = istate->method()->signature_handler();
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301 if (hA != NULL) {
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302 if (hA != (address) InterpreterRuntime::slow_signature_handler) {
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303 InterpreterRuntime::SignatureHandler *handler =
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304 InterpreterRuntime::SignatureHandler::from_handlerAddr(hA);
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305
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306 intptr_t *params = istate->stack_base() - handler->argument_count();
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307 if (addr >= params) {
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308 int param = addr - params;
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309 const char *desc = "";
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310 if (param == 0)
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311 desc = " (JNIEnv)";
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312 else if (param == 1) {
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313 if (istate->method()->is_static())
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314 desc = " (mirror)";
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315 else
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316 desc = " (this)";
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317 }
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318 snprintf(fieldbuf, buflen, "parameter[%d]%s", param, desc);
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319 return;
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320 }
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321
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322 for (int i = 0; i < handler->argument_count(); i++) {
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323 if (params[i] == (intptr_t) addr) {
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324 snprintf(fieldbuf, buflen, "unboxed parameter[%d]", i);
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325 return;
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326 }
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327 }
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328 }
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329 }
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330 return;
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331 }
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332
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333 // Monitors and stack
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334 identify_vp_word(frame_index, addr,
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335 (intptr_t *) istate->monitor_base(),
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336 istate->stack_base(),
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337 fieldbuf, buflen);
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338 }
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339
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340 void SharkFrame::identify_word(int frame_index,
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341 int offset,
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342 char* fieldbuf,
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343 char* valuebuf,
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344 int buflen) const {
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345 // Fixed part
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346 switch (offset) {
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347 case pc_off:
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348 strncpy(fieldbuf, "pc", buflen);
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349 if (method()->is_oop()) {
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350 nmethod *code = method()->code();
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351 if (code && code->pc_desc_at(pc())) {
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352 SimpleScopeDesc ssd(code, pc());
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353 snprintf(valuebuf, buflen, PTR_FORMAT " (bci %d)",
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354 (intptr_t) pc(), ssd.bci());
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355 }
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356 }
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357 return;
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358
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359 case unextended_sp_off:
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360 strncpy(fieldbuf, "unextended_sp", buflen);
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361 return;
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362
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363 case method_off:
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364 strncpy(fieldbuf, "method", buflen);
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365 if (method()->is_oop()) {
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366 method()->name_and_sig_as_C_string(valuebuf, buflen);
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367 }
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368 return;
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369
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370 case oop_tmp_off:
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371 strncpy(fieldbuf, "oop_tmp", buflen);
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372 return;
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373 }
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374
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375 // Variable part
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376 if (method()->is_oop()) {
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377 identify_vp_word(frame_index, addr_of_word(offset),
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378 addr_of_word(header_words + 1),
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379 unextended_sp() + method()->max_stack(),
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380 fieldbuf, buflen);
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381 }
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382 }
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383
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384 void ZeroFrame::identify_vp_word(int frame_index,
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385 intptr_t* addr,
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386 intptr_t* monitor_base,
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387 intptr_t* stack_base,
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388 char* fieldbuf,
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389 int buflen) const {
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390 // Monitors
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391 if (addr >= stack_base && addr < monitor_base) {
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392 int monitor_size = frame::interpreter_frame_monitor_size();
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393 int last_index = (monitor_base - stack_base) / monitor_size - 1;
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394 int index = last_index - (addr - stack_base) / monitor_size;
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395 intptr_t monitor = (intptr_t) (
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396 (BasicObjectLock *) monitor_base - 1 - index);
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397 intptr_t offset = (intptr_t) addr - monitor;
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398
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399 if (offset == BasicObjectLock::obj_offset_in_bytes())
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400 snprintf(fieldbuf, buflen, "monitor[%d]->_obj", index);
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401 else if (offset == BasicObjectLock::lock_offset_in_bytes())
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402 snprintf(fieldbuf, buflen, "monitor[%d]->_lock", index);
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403
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404 return;
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405 }
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406
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407 // Expression stack
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408 if (addr < stack_base) {
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409 snprintf(fieldbuf, buflen, "%s[%d]",
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410 frame_index == 0 ? "stack_word" : "local",
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411 (int) (stack_base - addr - 1));
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412 return;
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413 }
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414 }
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