1 /* 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef CPU_SPARC_VM_FRAME_SPARC_INLINE_HPP 26 #define CPU_SPARC_VM_FRAME_SPARC_INLINE_HPP 27 28 #include "asm/macroAssembler.hpp" 29 30 // Inline functions for SPARC frames: 31 32 // Constructors 33 34 inline frame::frame() { 35 _pc = NULL; 36 _sp = NULL; 37 _younger_sp = NULL; 38 _cb = NULL; 39 _deopt_state = unknown; 40 _sp_adjustment_by_callee = 0; 41 } 42 43 // Accessors: 44 45 inline bool frame::equal(frame other) const { 46 bool ret = sp() == other.sp() 47 && fp() == other.fp() 48 && pc() == other.pc(); 49 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction"); 50 return ret; 51 } 52 53 // Return unique id for this frame. The id must have a value where we can distinguish 54 // identity and younger/older relationship. NULL represents an invalid (incomparable) 55 // frame. 56 inline intptr_t* frame::id(void) const { return unextended_sp(); } 57 58 // Relationals on frames based 59 // Return true if the frame is younger (more recent activation) than the frame represented by id 60 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id"); 61 return this->id() < id ; } 62 63 // Return true if the frame is older (less recent activation) than the frame represented by id 64 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id"); 65 return this->id() > id ; } 66 67 inline int frame::frame_size(RegisterMap* map) const { return sender_sp() - sp(); } 68 69 inline intptr_t* frame::link() const { return (intptr_t *)(fp()[FP->sp_offset_in_saved_window()] + STACK_BIAS); } 70 71 inline void frame::set_link(intptr_t* addr) { assert(link()==addr, "frame nesting is controlled by hardware"); } 72 73 inline intptr_t* frame::unextended_sp() const { return sp() + _sp_adjustment_by_callee; } 74 75 // return address: 76 77 inline address frame::sender_pc() const { return *I7_addr() + pc_return_offset; } 78 79 inline address* frame::I7_addr() const { return (address*) &sp()[ I7->sp_offset_in_saved_window()]; } 80 inline address* frame::I0_addr() const { return (address*) &sp()[ I0->sp_offset_in_saved_window()]; } 81 82 inline address* frame::O7_addr() const { return (address*) &younger_sp()[ I7->sp_offset_in_saved_window()]; } 83 inline address* frame::O0_addr() const { return (address*) &younger_sp()[ I0->sp_offset_in_saved_window()]; } 84 85 inline intptr_t* frame::sender_sp() const { return fp(); } 86 87 inline intptr_t* frame::real_fp() const { return fp(); } 88 89 // Used only in frame::oopmapreg_to_location 90 // This return a value in VMRegImpl::slot_size 91 inline int frame::pd_oop_map_offset_adjustment() const { 92 return _sp_adjustment_by_callee * VMRegImpl::slots_per_word; 93 } 94 95 #ifdef CC_INTERP 96 inline intptr_t** frame::interpreter_frame_locals_addr() const { 97 interpreterState istate = get_interpreterState(); 98 return (intptr_t**) &istate->_locals; 99 } 100 101 inline intptr_t* frame::interpreter_frame_bcx_addr() const { 102 interpreterState istate = get_interpreterState(); 103 return (intptr_t*) &istate->_bcp; 104 } 105 106 inline intptr_t* frame::interpreter_frame_mdx_addr() const { 107 interpreterState istate = get_interpreterState(); 108 return (intptr_t*) &istate->_mdx; 109 } 110 111 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; } 112 113 // bottom(base) of the expression stack (highest address) 114 inline intptr_t* frame::interpreter_frame_expression_stack() const { 115 return (intptr_t*)interpreter_frame_monitor_end() - 1; 116 } 117 118 // top of expression stack (lowest address) 119 inline intptr_t* frame::interpreter_frame_tos_address() const { 120 interpreterState istate = get_interpreterState(); 121 return istate->_stack + 1; // Is this off by one? QQQ 122 } 123 124 // monitor elements 125 126 // in keeping with Intel side: end is lower in memory than begin; 127 // and beginning element is oldest element 128 // Also begin is one past last monitor. 129 130 inline BasicObjectLock* frame::interpreter_frame_monitor_begin() const { 131 return get_interpreterState()->monitor_base(); 132 } 133 134 inline BasicObjectLock* frame::interpreter_frame_monitor_end() const { 135 return (BasicObjectLock*) get_interpreterState()->stack_base(); 136 } 137 138 139 inline int frame::interpreter_frame_monitor_size() { 140 return round_to(BasicObjectLock::size(), WordsPerLong); 141 } 142 143 inline Method** frame::interpreter_frame_method_addr() const { 144 interpreterState istate = get_interpreterState(); 145 return &istate->_method; 146 } 147 148 149 // Constant pool cache 150 151 // where LcpoolCache is saved: 152 inline ConstantPoolCache** frame::interpreter_frame_cpoolcache_addr() const { 153 interpreterState istate = get_interpreterState(); 154 return &istate->_constants; // should really use accessor 155 } 156 157 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const { 158 interpreterState istate = get_interpreterState(); 159 return &istate->_constants; 160 } 161 162 #else // !CC_INTERP 163 164 inline intptr_t** frame::interpreter_frame_locals_addr() const { 165 return (intptr_t**) sp_addr_at( Llocals->sp_offset_in_saved_window()); 166 } 167 168 inline intptr_t* frame::interpreter_frame_bcx_addr() const { 169 // %%%%% reinterpreting Lbcp as a bcx 170 return (intptr_t*) sp_addr_at( Lbcp->sp_offset_in_saved_window()); 171 } 172 173 inline intptr_t* frame::interpreter_frame_mdx_addr() const { 174 // %%%%% reinterpreting ImethodDataPtr as a mdx 175 return (intptr_t*) sp_addr_at( ImethodDataPtr->sp_offset_in_saved_window()); 176 } 177 178 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; } 179 180 // bottom(base) of the expression stack (highest address) 181 inline intptr_t* frame::interpreter_frame_expression_stack() const { 182 return (intptr_t*)interpreter_frame_monitors() - 1; 183 } 184 185 // top of expression stack (lowest address) 186 inline intptr_t* frame::interpreter_frame_tos_address() const { 187 return *interpreter_frame_esp_addr() + 1; 188 } 189 190 inline BasicObjectLock** frame::interpreter_frame_monitors_addr() const { 191 return (BasicObjectLock**) sp_addr_at(Lmonitors->sp_offset_in_saved_window()); 192 } 193 inline intptr_t** frame::interpreter_frame_esp_addr() const { 194 return (intptr_t**)sp_addr_at(Lesp->sp_offset_in_saved_window()); 195 } 196 197 inline void frame::interpreter_frame_set_tos_address( intptr_t* x ) { 198 *interpreter_frame_esp_addr() = x - 1; 199 } 200 201 // monitor elements 202 203 // in keeping with Intel side: end is lower in memory than begin; 204 // and beginning element is oldest element 205 // Also begin is one past last monitor. 206 207 inline BasicObjectLock* frame::interpreter_frame_monitor_begin() const { 208 int rounded_vm_local_words = round_to(frame::interpreter_frame_vm_local_words, WordsPerLong); 209 return (BasicObjectLock *)fp_addr_at(-rounded_vm_local_words); 210 } 211 212 inline BasicObjectLock* frame::interpreter_frame_monitor_end() const { 213 return interpreter_frame_monitors(); 214 } 215 216 217 inline void frame::interpreter_frame_set_monitor_end(BasicObjectLock* value) { 218 interpreter_frame_set_monitors(value); 219 } 220 221 inline int frame::interpreter_frame_monitor_size() { 222 return round_to(BasicObjectLock::size(), WordsPerLong); 223 } 224 225 inline Method** frame::interpreter_frame_method_addr() const { 226 return (Method**)sp_addr_at( Lmethod->sp_offset_in_saved_window()); 227 } 228 229 inline BasicObjectLock* frame::interpreter_frame_monitors() const { 230 return *interpreter_frame_monitors_addr(); 231 } 232 233 inline void frame::interpreter_frame_set_monitors(BasicObjectLock* monitors) { 234 *interpreter_frame_monitors_addr() = monitors; 235 } 236 237 // Constant pool cache 238 239 // where LcpoolCache is saved: 240 inline ConstantPoolCache** frame::interpreter_frame_cpoolcache_addr() const { 241 return (ConstantPoolCache**)sp_addr_at(LcpoolCache->sp_offset_in_saved_window()); 242 } 243 244 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const { 245 return (ConstantPoolCache**)sp_addr_at( LcpoolCache->sp_offset_in_saved_window()); 246 } 247 248 inline oop* frame::interpreter_frame_temp_oop_addr() const { 249 return (oop *)(fp() + interpreter_frame_oop_temp_offset); 250 } 251 #endif // CC_INTERP 252 253 254 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const { 255 // note: adjust this code if the link argument in StubGenerator::call_stub() changes! 256 const Argument link = Argument(0, false); 257 return (JavaCallWrapper**)&sp()[link.as_in().as_register()->sp_offset_in_saved_window()]; 258 } 259 260 261 inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) { 262 // always allocate non-argument locals 0..5 as if they were arguments: 263 int allocated_above_frame = nof_args; 264 if (allocated_above_frame < callee_register_argument_save_area_words) 265 allocated_above_frame = callee_register_argument_save_area_words; 266 if (allocated_above_frame > max_nof_locals) 267 allocated_above_frame = max_nof_locals; 268 269 // Note: monitors (BasicLock blocks) are never allocated in argument slots 270 //assert(local_index >= 0 && local_index < max_nof_locals, "bad local index"); 271 if (local_index < allocated_above_frame) 272 return local_index + callee_register_argument_save_area_sp_offset; 273 else 274 return local_index - (max_nof_locals + max_nof_monitors*2) + compiler_frame_vm_locals_fp_offset; 275 } 276 277 inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) { 278 assert(local_index >= max_nof_locals && ((local_index - max_nof_locals) & 1) && (local_index - max_nof_locals) < max_nof_monitors*2, "bad monitor index"); 279 280 // The compiler uses the __higher__ of two indexes allocated to the monitor. 281 // Increasing local indexes are mapped to increasing memory locations, 282 // so the start of the BasicLock is associated with the __lower__ index. 283 284 int offset = (local_index-1) - (max_nof_locals + max_nof_monitors*2) + compiler_frame_vm_locals_fp_offset; 285 286 // We allocate monitors aligned zero mod 8: 287 assert((offset & 1) == 0, "monitor must be an an even address."); 288 // This works because all monitors are allocated after 289 // all locals, and because the highest address corresponding to any 290 // monitor index is always even. 291 assert((compiler_frame_vm_locals_fp_offset & 1) == 0, "end of monitors must be even address"); 292 293 return offset; 294 } 295 296 inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) { 297 // always allocate non-argument locals 0..5 as if they were arguments: 298 int allocated_above_frame = nof_args; 299 if (allocated_above_frame < callee_register_argument_save_area_words) 300 allocated_above_frame = callee_register_argument_save_area_words; 301 if (allocated_above_frame > max_nof_locals) 302 allocated_above_frame = max_nof_locals; 303 304 int allocated_in_frame = (max_nof_locals + max_nof_monitors*2) - allocated_above_frame; 305 306 return compiler_frame_vm_locals_fp_offset - allocated_in_frame; 307 } 308 309 // On SPARC, the %lN and %iN registers are non-volatile. 310 inline bool frame::volatile_across_calls(Register reg) { 311 // This predicate is (presently) applied only to temporary registers, 312 // and so it need not recognize non-volatile globals. 313 return reg->is_out() || reg->is_global(); 314 } 315 316 inline oop frame::saved_oop_result(RegisterMap* map) const { 317 return *((oop*) map->location(O0->as_VMReg())); 318 } 319 320 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) { 321 *((oop*) map->location(O0->as_VMReg())) = obj; 322 } 323 324 #endif // CPU_SPARC_VM_FRAME_SPARC_INLINE_HPP