1 /* 2 * Copyright (c) 1997, 2015, 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 #include "code/vmreg.inline.hpp" 30 31 // Inline functions for SPARC frames: 32 33 // Constructors 34 35 inline frame::frame() { 36 _pc = NULL; 37 _sp = NULL; 38 _younger_sp = NULL; 39 _cb = NULL; 40 _deopt_state = unknown; 41 _sp_adjustment_by_callee = 0; 42 } 43 44 // Accessors: 45 46 inline bool frame::equal(frame other) const { 47 bool ret = sp() == other.sp() 48 && fp() == other.fp() 49 && pc() == other.pc(); 50 assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction"); 51 return ret; 52 } 53 54 // Return unique id for this frame. The id must have a value where we can distinguish 55 // identity and younger/older relationship. NULL represents an invalid (incomparable) 56 // frame. 57 inline intptr_t* frame::id(void) const { return unextended_sp(); } 58 59 // Relationals on frames based 60 // Return true if the frame is younger (more recent activation) than the frame represented by id 61 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id"); 62 return this->id() < id ; } 63 64 // Return true if the frame is older (less recent activation) than the frame represented by id 65 inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id"); 66 return this->id() > id ; } 67 68 inline int frame::frame_size(RegisterMap* map) const { return sender_sp() - sp(); } 69 70 inline intptr_t* frame::link() const { return (intptr_t *)(fp()[FP->sp_offset_in_saved_window()] + STACK_BIAS); } 71 72 inline intptr_t* frame::unextended_sp() const { return sp() + _sp_adjustment_by_callee; } 73 74 // return address: 75 76 inline address frame::sender_pc() const { return *I7_addr() + pc_return_offset; } 77 78 inline address* frame::I7_addr() const { return (address*) &sp()[ I7->sp_offset_in_saved_window()]; } 79 inline address* frame::I0_addr() const { return (address*) &sp()[ I0->sp_offset_in_saved_window()]; } 80 81 inline address* frame::O7_addr() const { return (address*) &younger_sp()[ I7->sp_offset_in_saved_window()]; } 82 inline address* frame::O0_addr() const { return (address*) &younger_sp()[ I0->sp_offset_in_saved_window()]; } 83 84 inline intptr_t* frame::sender_sp() const { return fp(); } 85 86 inline intptr_t* frame::real_fp() const { return fp(); } 87 88 // Used only in frame::oopmapreg_to_location 89 // This return a value in VMRegImpl::slot_size 90 inline int frame::pd_oop_map_offset_adjustment() const { 91 return _sp_adjustment_by_callee * VMRegImpl::slots_per_word; 92 } 93 94 #ifdef CC_INTERP 95 inline intptr_t** frame::interpreter_frame_locals_addr() const { 96 interpreterState istate = get_interpreterState(); 97 return (intptr_t**) &istate->_locals; 98 } 99 100 inline intptr_t* frame::interpreter_frame_bcp_addr() const { 101 interpreterState istate = get_interpreterState(); 102 return (intptr_t*) &istate->_bcp; 103 } 104 105 inline intptr_t* frame::interpreter_frame_mdp_addr() const { 106 interpreterState istate = get_interpreterState(); 107 return (intptr_t*) &istate->_mdx; 108 } 109 110 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; } 111 112 // bottom(base) of the expression stack (highest address) 113 inline intptr_t* frame::interpreter_frame_expression_stack() const { 114 return (intptr_t*)interpreter_frame_monitor_end() - 1; 115 } 116 117 // top of expression stack (lowest address) 118 inline intptr_t* frame::interpreter_frame_tos_address() const { 119 interpreterState istate = get_interpreterState(); 120 return istate->_stack + 1; // Is this off by one? QQQ 121 } 122 123 // monitor elements 124 125 // in keeping with Intel side: end is lower in memory than begin; 126 // and beginning element is oldest element 127 // Also begin is one past last monitor. 128 129 inline BasicObjectLock* frame::interpreter_frame_monitor_begin() const { 130 return get_interpreterState()->monitor_base(); 131 } 132 133 inline BasicObjectLock* frame::interpreter_frame_monitor_end() const { 134 return (BasicObjectLock*) get_interpreterState()->stack_base(); 135 } 136 137 138 inline int frame::interpreter_frame_monitor_size() { 139 return round_to(BasicObjectLock::size(), WordsPerLong); 140 } 141 142 inline Method** frame::interpreter_frame_method_addr() const { 143 interpreterState istate = get_interpreterState(); 144 return &istate->_method; 145 } 146 147 148 // Constant pool cache 149 150 // where LcpoolCache is saved: 151 inline ConstantPoolCache** frame::interpreter_frame_cpoolcache_addr() const { 152 interpreterState istate = get_interpreterState(); 153 return &istate->_constants; // should really use accessor 154 } 155 156 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const { 157 interpreterState istate = get_interpreterState(); 158 return &istate->_constants; 159 } 160 161 #else // !CC_INTERP 162 163 inline intptr_t** frame::interpreter_frame_locals_addr() const { 164 return (intptr_t**) sp_addr_at( Llocals->sp_offset_in_saved_window()); 165 } 166 167 inline intptr_t* frame::interpreter_frame_bcp_addr() const { 168 return (intptr_t*) sp_addr_at( Lbcp->sp_offset_in_saved_window()); 169 } 170 171 inline intptr_t* frame::interpreter_frame_mdp_addr() const { 172 // %%%%% reinterpreting ImethodDataPtr as a mdx 173 return (intptr_t*) sp_addr_at( ImethodDataPtr->sp_offset_in_saved_window()); 174 } 175 176 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; } 177 178 // bottom(base) of the expression stack (highest address) 179 inline intptr_t* frame::interpreter_frame_expression_stack() const { 180 return (intptr_t*)interpreter_frame_monitors() - 1; 181 } 182 183 // top of expression stack (lowest address) 184 inline intptr_t* frame::interpreter_frame_tos_address() const { 185 return *interpreter_frame_esp_addr() + 1; 186 } 187 188 inline BasicObjectLock** frame::interpreter_frame_monitors_addr() const { 189 return (BasicObjectLock**) sp_addr_at(Lmonitors->sp_offset_in_saved_window()); 190 } 191 inline intptr_t** frame::interpreter_frame_esp_addr() const { 192 return (intptr_t**)sp_addr_at(Lesp->sp_offset_in_saved_window()); 193 } 194 195 inline void frame::interpreter_frame_set_tos_address( intptr_t* x ) { 196 *interpreter_frame_esp_addr() = x - 1; 197 } 198 199 // monitor elements 200 201 // in keeping with Intel side: end is lower in memory than begin; 202 // and beginning element is oldest element 203 // Also begin is one past last monitor. 204 205 inline BasicObjectLock* frame::interpreter_frame_monitor_begin() const { 206 int rounded_vm_local_words = round_to(frame::interpreter_frame_vm_local_words, WordsPerLong); 207 return (BasicObjectLock *)fp_addr_at(-rounded_vm_local_words); 208 } 209 210 inline BasicObjectLock* frame::interpreter_frame_monitor_end() const { 211 return interpreter_frame_monitors(); 212 } 213 214 215 inline void frame::interpreter_frame_set_monitor_end(BasicObjectLock* value) { 216 interpreter_frame_set_monitors(value); 217 } 218 219 inline int frame::interpreter_frame_monitor_size() { 220 return round_to(BasicObjectLock::size(), WordsPerLong); 221 } 222 223 inline Method** frame::interpreter_frame_method_addr() const { 224 return (Method**)sp_addr_at( Lmethod->sp_offset_in_saved_window()); 225 } 226 227 inline BasicObjectLock* frame::interpreter_frame_monitors() const { 228 return *interpreter_frame_monitors_addr(); 229 } 230 231 inline void frame::interpreter_frame_set_monitors(BasicObjectLock* monitors) { 232 *interpreter_frame_monitors_addr() = monitors; 233 } 234 235 // Constant pool cache 236 237 // where LcpoolCache is saved: 238 inline ConstantPoolCache** frame::interpreter_frame_cpoolcache_addr() const { 239 return (ConstantPoolCache**)sp_addr_at(LcpoolCache->sp_offset_in_saved_window()); 240 } 241 242 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const { 243 return (ConstantPoolCache**)sp_addr_at( LcpoolCache->sp_offset_in_saved_window()); 244 } 245 246 inline oop* frame::interpreter_frame_temp_oop_addr() const { 247 return (oop *)(fp() + interpreter_frame_oop_temp_offset); 248 } 249 #endif // CC_INTERP 250 251 252 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const { 253 // note: adjust this code if the link argument in StubGenerator::call_stub() changes! 254 const Argument link = Argument(0, false); 255 return (JavaCallWrapper**)&sp()[link.as_in().as_register()->sp_offset_in_saved_window()]; 256 } 257 258 259 inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) { 260 // always allocate non-argument locals 0..5 as if they were arguments: 261 int allocated_above_frame = nof_args; 262 if (allocated_above_frame < callee_register_argument_save_area_words) 263 allocated_above_frame = callee_register_argument_save_area_words; 264 if (allocated_above_frame > max_nof_locals) 265 allocated_above_frame = max_nof_locals; 266 267 // Note: monitors (BasicLock blocks) are never allocated in argument slots 268 //assert(local_index >= 0 && local_index < max_nof_locals, "bad local index"); 269 if (local_index < allocated_above_frame) 270 return local_index + callee_register_argument_save_area_sp_offset; 271 else 272 return local_index - (max_nof_locals + max_nof_monitors*2) + compiler_frame_vm_locals_fp_offset; 273 } 274 275 inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) { 276 assert(local_index >= max_nof_locals && ((local_index - max_nof_locals) & 1) && (local_index - max_nof_locals) < max_nof_monitors*2, "bad monitor index"); 277 278 // The compiler uses the __higher__ of two indexes allocated to the monitor. 279 // Increasing local indexes are mapped to increasing memory locations, 280 // so the start of the BasicLock is associated with the __lower__ index. 281 282 int offset = (local_index-1) - (max_nof_locals + max_nof_monitors*2) + compiler_frame_vm_locals_fp_offset; 283 284 // We allocate monitors aligned zero mod 8: 285 assert((offset & 1) == 0, "monitor must be an an even address."); 286 // This works because all monitors are allocated after 287 // all locals, and because the highest address corresponding to any 288 // monitor index is always even. 289 assert((compiler_frame_vm_locals_fp_offset & 1) == 0, "end of monitors must be even address"); 290 291 return offset; 292 } 293 294 inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) { 295 // always allocate non-argument locals 0..5 as if they were arguments: 296 int allocated_above_frame = nof_args; 297 if (allocated_above_frame < callee_register_argument_save_area_words) 298 allocated_above_frame = callee_register_argument_save_area_words; 299 if (allocated_above_frame > max_nof_locals) 300 allocated_above_frame = max_nof_locals; 301 302 int allocated_in_frame = (max_nof_locals + max_nof_monitors*2) - allocated_above_frame; 303 304 return compiler_frame_vm_locals_fp_offset - allocated_in_frame; 305 } 306 307 // On SPARC, the %lN and %iN registers are non-volatile. 308 inline bool frame::volatile_across_calls(Register reg) { 309 // This predicate is (presently) applied only to temporary registers, 310 // and so it need not recognize non-volatile globals. 311 return reg->is_out() || reg->is_global(); 312 } 313 314 inline oop frame::saved_oop_result(RegisterMap* map) const { 315 return *((oop*) map->location(O0->as_VMReg())); 316 } 317 318 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) { 319 *((oop*) map->location(O0->as_VMReg())) = obj; 320 } 321 322 #endif // CPU_SPARC_VM_FRAME_SPARC_INLINE_HPP