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 inline intptr_t** frame::interpreter_frame_locals_addr() const { 95 return (intptr_t**) sp_addr_at( Llocals->sp_offset_in_saved_window()); 96 } 97 98 inline intptr_t* frame::interpreter_frame_bcp_addr() const { 99 return (intptr_t*) sp_addr_at( Lbcp->sp_offset_in_saved_window()); 100 } 101 102 inline intptr_t* frame::interpreter_frame_mdp_addr() const { 103 // %%%%% reinterpreting ImethodDataPtr as a mdx 104 return (intptr_t*) sp_addr_at( ImethodDataPtr->sp_offset_in_saved_window()); 105 } 106 107 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; } 108 109 // bottom(base) of the expression stack (highest address) 110 inline intptr_t* frame::interpreter_frame_expression_stack() const { 111 return (intptr_t*)interpreter_frame_monitors() - 1; 112 } 113 114 // top of expression stack (lowest address) 115 inline intptr_t* frame::interpreter_frame_tos_address() const { 116 return *interpreter_frame_esp_addr() + 1; 117 } 118 119 inline BasicObjectLock** frame::interpreter_frame_monitors_addr() const { 120 return (BasicObjectLock**) sp_addr_at(Lmonitors->sp_offset_in_saved_window()); 121 } 122 inline intptr_t** frame::interpreter_frame_esp_addr() const { 123 return (intptr_t**)sp_addr_at(Lesp->sp_offset_in_saved_window()); 124 } 125 126 inline void frame::interpreter_frame_set_tos_address( intptr_t* x ) { 127 *interpreter_frame_esp_addr() = x - 1; 128 } 129 130 // monitor elements 131 132 // in keeping with Intel side: end is lower in memory than begin; 133 // and beginning element is oldest element 134 // Also begin is one past last monitor. 135 136 inline BasicObjectLock* frame::interpreter_frame_monitor_begin() const { 137 int rounded_vm_local_words = round_to(frame::interpreter_frame_vm_local_words, WordsPerLong); 138 return (BasicObjectLock *)fp_addr_at(-rounded_vm_local_words); 139 } 140 141 inline BasicObjectLock* frame::interpreter_frame_monitor_end() const { 142 return interpreter_frame_monitors(); 143 } 144 145 146 inline void frame::interpreter_frame_set_monitor_end(BasicObjectLock* value) { 147 interpreter_frame_set_monitors(value); 148 } 149 150 inline int frame::interpreter_frame_monitor_size() { 151 return round_to(BasicObjectLock::size(), WordsPerLong); 152 } 153 154 inline Method** frame::interpreter_frame_method_addr() const { 155 return (Method**)sp_addr_at( Lmethod->sp_offset_in_saved_window()); 156 } 157 158 inline BasicObjectLock* frame::interpreter_frame_monitors() const { 159 return *interpreter_frame_monitors_addr(); 160 } 161 162 inline void frame::interpreter_frame_set_monitors(BasicObjectLock* monitors) { 163 *interpreter_frame_monitors_addr() = monitors; 164 } 165 166 // Constant pool cache 167 168 // where LcpoolCache is saved: 169 inline ConstantPoolCache** frame::interpreter_frame_cpoolcache_addr() const { 170 return (ConstantPoolCache**)sp_addr_at(LcpoolCache->sp_offset_in_saved_window()); 171 } 172 173 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const { 174 return (ConstantPoolCache**)sp_addr_at( LcpoolCache->sp_offset_in_saved_window()); 175 } 176 177 inline oop* frame::interpreter_frame_temp_oop_addr() const { 178 return (oop *)(fp() + interpreter_frame_oop_temp_offset); 179 } 180 181 182 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const { 183 // note: adjust this code if the link argument in StubGenerator::call_stub() changes! 184 const Argument link = Argument(0, false); 185 return (JavaCallWrapper**)&sp()[link.as_in().as_register()->sp_offset_in_saved_window()]; 186 } 187 188 189 inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) { 190 // always allocate non-argument locals 0..5 as if they were arguments: 191 int allocated_above_frame = nof_args; 192 if (allocated_above_frame < callee_register_argument_save_area_words) 193 allocated_above_frame = callee_register_argument_save_area_words; 194 if (allocated_above_frame > max_nof_locals) 195 allocated_above_frame = max_nof_locals; 196 197 // Note: monitors (BasicLock blocks) are never allocated in argument slots 198 //assert(local_index >= 0 && local_index < max_nof_locals, "bad local index"); 199 if (local_index < allocated_above_frame) 200 return local_index + callee_register_argument_save_area_sp_offset; 201 else 202 return local_index - (max_nof_locals + max_nof_monitors*2) + compiler_frame_vm_locals_fp_offset; 203 } 204 205 inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) { 206 assert(local_index >= max_nof_locals && ((local_index - max_nof_locals) & 1) && (local_index - max_nof_locals) < max_nof_monitors*2, "bad monitor index"); 207 208 // The compiler uses the __higher__ of two indexes allocated to the monitor. 209 // Increasing local indexes are mapped to increasing memory locations, 210 // so the start of the BasicLock is associated with the __lower__ index. 211 212 int offset = (local_index-1) - (max_nof_locals + max_nof_monitors*2) + compiler_frame_vm_locals_fp_offset; 213 214 // We allocate monitors aligned zero mod 8: 215 assert((offset & 1) == 0, "monitor must be an an even address."); 216 // This works because all monitors are allocated after 217 // all locals, and because the highest address corresponding to any 218 // monitor index is always even. 219 assert((compiler_frame_vm_locals_fp_offset & 1) == 0, "end of monitors must be even address"); 220 221 return offset; 222 } 223 224 inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) { 225 // always allocate non-argument locals 0..5 as if they were arguments: 226 int allocated_above_frame = nof_args; 227 if (allocated_above_frame < callee_register_argument_save_area_words) 228 allocated_above_frame = callee_register_argument_save_area_words; 229 if (allocated_above_frame > max_nof_locals) 230 allocated_above_frame = max_nof_locals; 231 232 int allocated_in_frame = (max_nof_locals + max_nof_monitors*2) - allocated_above_frame; 233 234 return compiler_frame_vm_locals_fp_offset - allocated_in_frame; 235 } 236 237 // On SPARC, the %lN and %iN registers are non-volatile. 238 inline bool frame::volatile_across_calls(Register reg) { 239 // This predicate is (presently) applied only to temporary registers, 240 // and so it need not recognize non-volatile globals. 241 return reg->is_out() || reg->is_global(); 242 } 243 244 inline oop frame::saved_oop_result(RegisterMap* map) const { 245 return *((oop*) map->location(O0->as_VMReg())); 246 } 247 248 inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) { 249 *((oop*) map->location(O0->as_VMReg())) = obj; 250 } 251 252 #endif // CPU_SPARC_VM_FRAME_SPARC_INLINE_HPP