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_X86_FRAME_X86_INLINE_HPP
26 #define CPU_X86_FRAME_X86_INLINE_HPP
27
28 #include "code/codeBlob.inline.hpp"
29 #include "code/codeCache.inline.hpp"
30 #include "code/vmreg.inline.hpp"
31 #include "compiler/oopMap.inline.hpp"
32 #include "interpreter/interpreter.hpp"
33 #include "runtime/sharedRuntime.hpp"
34 #include "runtime/registerMap.hpp"
35
36 // Inline functions for Intel frames:
37
38 #if INCLUDE_JFR
39
40 // Static helper routines
41
42 inline address frame::interpreter_bcp(const intptr_t* fp) {
43 assert(fp != nullptr, "invariant");
44 return reinterpret_cast<address>(fp[frame::interpreter_frame_bcp_offset]);
45 }
46
47 inline address frame::interpreter_return_address(const intptr_t* fp) {
48 assert(fp != nullptr, "invariant");
49 return reinterpret_cast<address>(fp[frame::return_addr_offset]);
50 }
51
52 inline intptr_t* frame::interpreter_sender_sp(const intptr_t* fp) {
53 assert(fp != nullptr, "invariant");
54 return reinterpret_cast<intptr_t*>(fp[frame::interpreter_frame_sender_sp_offset]);
415 if (is_entry_frame()) return sender_for_entry_frame(map);
416 if (is_upcall_stub_frame()) return sender_for_upcall_stub_frame(map);
417 if (is_interpreted_frame()) return sender_for_interpreter_frame(map);
418
419 assert(_cb == CodeCache::find_blob(pc()), "Must be the same");
420 if (_cb != nullptr) return sender_for_compiled_frame(map);
421
422 // Must be native-compiled frame, i.e. the marshaling code for native
423 // methods that exists in the core system.
424 return frame(sender_sp(), link(), sender_pc());
425 }
426
427 inline frame frame::sender_for_compiled_frame(RegisterMap* map) const {
428 assert(map != nullptr, "map must be set");
429
430 // frame owned by optimizing compiler
431 assert(_cb->frame_size() > 0, "must have non-zero frame size");
432 intptr_t* sender_sp = unextended_sp() + _cb->frame_size();
433 assert(sender_sp == real_fp(), "");
434
435 // On Intel the return_address is always the word on the stack
436 address sender_pc = (address) *(sender_sp-1);
437
438 // This is the saved value of EBP which may or may not really be an FP.
439 // It is only an FP if the sender is an interpreter frame (or C1?).
440 // saved_fp_addr should be correct even for a bottom thawed frame (with a return barrier)
441 intptr_t** saved_fp_addr = (intptr_t**) (sender_sp - frame::sender_sp_offset);
442
443 if (map->update_map()) {
444 // Tell GC to use argument oopmaps for some runtime stubs that need it.
445 // For C1, the runtime stub might not have oop maps, so set this flag
446 // outside of update_register_map.
447 if (!_cb->is_nmethod()) { // compiled frames do not use callee-saved registers
448 map->set_include_argument_oops(_cb->caller_must_gc_arguments(map->thread()));
449 if (oop_map() != nullptr) {
450 _oop_map->update_register_map(this, map);
451 }
452 } else {
453 assert(!_cb->caller_must_gc_arguments(map->thread()), "");
454 assert(!map->include_argument_oops(), "");
455 assert(oop_map() == nullptr || !oop_map()->has_any(OopMapValue::callee_saved_value), "callee-saved value in compiled frame");
456 }
457
458 // Since the prolog does the save and restore of EBP there is no oopmap
459 // for it so we must fill in its location as if there was an oopmap entry
460 // since if our caller was compiled code there could be live jvm state in it.
461 update_map_with_saved_link(map, saved_fp_addr);
462 }
463
464 assert(sender_sp != sp(), "must have changed");
465
466 if (Continuation::is_return_barrier_entry(sender_pc)) {
467 if (map->walk_cont()) { // about to walk into an h-stack
468 return Continuation::top_frame(*this, map);
|
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_X86_FRAME_X86_INLINE_HPP
26 #define CPU_X86_FRAME_X86_INLINE_HPP
27
28 #include "code/codeBlob.inline.hpp"
29 #include "code/codeCache.inline.hpp"
30 #include "code/vmreg.inline.hpp"
31 #include "compiler/oopMap.inline.hpp"
32 #include "interpreter/interpreter.hpp"
33 #include "runtime/sharedRuntime.hpp"
34 #include "runtime/registerMap.hpp"
35 #ifdef COMPILER1
36 #include "c1/c1_Runtime1.hpp"
37 #endif
38
39 // Inline functions for Intel frames:
40
41 #if INCLUDE_JFR
42
43 // Static helper routines
44
45 inline address frame::interpreter_bcp(const intptr_t* fp) {
46 assert(fp != nullptr, "invariant");
47 return reinterpret_cast<address>(fp[frame::interpreter_frame_bcp_offset]);
48 }
49
50 inline address frame::interpreter_return_address(const intptr_t* fp) {
51 assert(fp != nullptr, "invariant");
52 return reinterpret_cast<address>(fp[frame::return_addr_offset]);
53 }
54
55 inline intptr_t* frame::interpreter_sender_sp(const intptr_t* fp) {
56 assert(fp != nullptr, "invariant");
57 return reinterpret_cast<intptr_t*>(fp[frame::interpreter_frame_sender_sp_offset]);
418 if (is_entry_frame()) return sender_for_entry_frame(map);
419 if (is_upcall_stub_frame()) return sender_for_upcall_stub_frame(map);
420 if (is_interpreted_frame()) return sender_for_interpreter_frame(map);
421
422 assert(_cb == CodeCache::find_blob(pc()), "Must be the same");
423 if (_cb != nullptr) return sender_for_compiled_frame(map);
424
425 // Must be native-compiled frame, i.e. the marshaling code for native
426 // methods that exists in the core system.
427 return frame(sender_sp(), link(), sender_pc());
428 }
429
430 inline frame frame::sender_for_compiled_frame(RegisterMap* map) const {
431 assert(map != nullptr, "map must be set");
432
433 // frame owned by optimizing compiler
434 assert(_cb->frame_size() > 0, "must have non-zero frame size");
435 intptr_t* sender_sp = unextended_sp() + _cb->frame_size();
436 assert(sender_sp == real_fp(), "");
437
438 #ifdef ASSERT
439 address sender_pc_copy = (address) *(sender_sp-1);
440 #endif
441
442 // This is the saved value of EBP which may or may not really be an FP.
443 // It is only an FP if the sender is an interpreter frame (or C1?).
444 // saved_fp_addr should be correct even for a bottom thawed frame (with a return barrier)
445 intptr_t** saved_fp_addr = (intptr_t**) (sender_sp - frame::sender_sp_offset);
446
447 // Repair the sender sp if the frame has been extended
448 sender_sp = repair_sender_sp(sender_sp, saved_fp_addr);
449
450 // On Intel the return_address is always the word on the stack
451 address sender_pc = (address) *(sender_sp-1);
452
453 #ifdef ASSERT
454 if (sender_pc != sender_pc_copy) {
455 // When extending the stack in the callee method entry to make room for unpacking of value
456 // type args, we keep a copy of the sender pc at the expected location in the callee frame.
457 // If the sender pc is patched due to deoptimization, the copy is not consistent anymore.
458 nmethod* nm = CodeCache::find_blob(sender_pc)->as_nmethod();
459 assert(sender_pc == nm->deopt_mh_handler_begin() || sender_pc == nm->deopt_handler_begin(), "unexpected sender pc");
460 }
461 #endif
462
463 if (map->update_map()) {
464 // Tell GC to use argument oopmaps for some runtime stubs that need it.
465 // For C1, the runtime stub might not have oop maps, so set this flag
466 // outside of update_register_map.
467 bool c1_buffering = false;
468 #ifdef COMPILER1
469 nmethod* nm = _cb->as_nmethod_or_null();
470 if (nm != nullptr && nm->is_compiled_by_c1() && nm->method()->has_scalarized_args() &&
471 pc() < nm->verified_inline_entry_point()) {
472 // The VEP and VIEP(RO) of C1-compiled methods call buffer_inline_args_xxx
473 // before doing any argument shuffling, so we need to scan the oops
474 // as the caller passes them.
475 c1_buffering = true;
476 #ifdef ASSERT
477 NativeCall* call = nativeCall_before(pc());
478 address dest = call->destination();
479 assert(dest == Runtime1::entry_for(C1StubId::buffer_inline_args_no_receiver_id) ||
480 dest == Runtime1::entry_for(C1StubId::buffer_inline_args_id), "unexpected safepoint in entry point");
481 #endif
482 }
483 #endif
484 if (!_cb->is_nmethod() || c1_buffering) { // compiled frames do not use callee-saved registers
485 bool caller_args = _cb->caller_must_gc_arguments(map->thread()) || c1_buffering;
486 map->set_include_argument_oops(caller_args);
487 if (oop_map() != nullptr) {
488 _oop_map->update_register_map(this, map);
489 }
490 } else {
491 assert(!_cb->caller_must_gc_arguments(map->thread()), "");
492 assert(!map->include_argument_oops(), "");
493 assert(oop_map() == nullptr || !oop_map()->has_any(OopMapValue::callee_saved_value), "callee-saved value in compiled frame");
494 }
495
496 // Since the prolog does the save and restore of EBP there is no oopmap
497 // for it so we must fill in its location as if there was an oopmap entry
498 // since if our caller was compiled code there could be live jvm state in it.
499 update_map_with_saved_link(map, saved_fp_addr);
500 }
501
502 assert(sender_sp != sp(), "must have changed");
503
504 if (Continuation::is_return_barrier_entry(sender_pc)) {
505 if (map->walk_cont()) { // about to walk into an h-stack
506 return Continuation::top_frame(*this, map);
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