15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #ifndef CPU_AARCH64_FRAME_AARCH64_INLINE_HPP
27 #define CPU_AARCH64_FRAME_AARCH64_INLINE_HPP
28
29 #include "code/codeBlob.inline.hpp"
30 #include "code/codeCache.inline.hpp"
31 #include "code/vmreg.inline.hpp"
32 #include "interpreter/interpreter.hpp"
33 #include "runtime/sharedRuntime.hpp"
34 #include "pauth_aarch64.hpp"
35
36 // Inline functions for AArch64 frames:
37
38 // Constructors:
39
40 inline frame::frame() {
41 _pc = nullptr;
42 _sp = nullptr;
43 _unextended_sp = nullptr;
44 _fp = nullptr;
45 _cb = nullptr;
46 _deopt_state = unknown;
47 _sp_is_trusted = false;
48 _on_heap = false;
49 DEBUG_ONLY(_frame_index = -1;)
50 }
51
52 static int spin;
53
54 inline void frame::init(intptr_t* sp, intptr_t* fp, address pc) {
387 assert(_cb == CodeCache::find_blob(pc()), "Must be the same");
388 if (_cb != nullptr) return sender_for_compiled_frame(map);
389
390 // Must be native-compiled frame, i.e. the marshaling code for native
391 // methods that exists in the core system.
392
393 // Native code may or may not have signed the return address, we have no way to be sure or what
394 // signing methods they used. Instead, just ensure the stripped value is used.
395
396 return frame(sender_sp(), link(), sender_pc());
397 }
398
399 inline frame frame::sender_for_compiled_frame(RegisterMap* map) const {
400 // we cannot rely upon the last fp having been saved to the thread
401 // in C2 code but it will have been pushed onto the stack. so we
402 // have to find it relative to the unextended sp
403
404 assert(_cb->frame_size() > 0, "must have non-zero frame size");
405 intptr_t* l_sender_sp = (!PreserveFramePointer || _sp_is_trusted) ? unextended_sp() + _cb->frame_size()
406 : sender_sp();
407 assert(!_sp_is_trusted || l_sender_sp == real_fp(), "");
408
409 // The return_address is always the word on the stack.
410 // For ROP protection, C1/C2 will have signed the sender_pc,
411 // but there is no requirement to authenticate it here.
412 address sender_pc = pauth_strip_verifiable((address) *(l_sender_sp - 1));
413
414 intptr_t** saved_fp_addr = (intptr_t**) (l_sender_sp - frame::sender_sp_offset);
415
416 if (map->update_map()) {
417 // Tell GC to use argument oopmaps for some runtime stubs that need it.
418 // For C1, the runtime stub might not have oop maps, so set this flag
419 // outside of update_register_map.
420 if (!_cb->is_nmethod()) { // compiled frames do not use callee-saved registers
421 map->set_include_argument_oops(_cb->caller_must_gc_arguments(map->thread()));
422 if (oop_map() != nullptr) {
423 _oop_map->update_register_map(this, map);
424 }
425 } else {
426 assert(!_cb->caller_must_gc_arguments(map->thread()), "");
427 assert(!map->include_argument_oops(), "");
428 assert(oop_map() == nullptr || !oop_map()->has_any(OopMapValue::callee_saved_value), "callee-saved value in compiled frame");
429 }
430
431 // Since the prolog does the save and restore of FP there is no oopmap
432 // for it so we must fill in its location as if there was an oopmap entry
433 // since if our caller was compiled code there could be live jvm state in it.
434 update_map_with_saved_link(map, saved_fp_addr);
435 }
436
437 if (Continuation::is_return_barrier_entry(sender_pc)) {
438 if (map->walk_cont()) { // about to walk into an h-stack
439 return Continuation::top_frame(*this, map);
440 } else {
441 return Continuation::continuation_bottom_sender(map->thread(), *this, l_sender_sp);
|
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #ifndef CPU_AARCH64_FRAME_AARCH64_INLINE_HPP
27 #define CPU_AARCH64_FRAME_AARCH64_INLINE_HPP
28
29 #include "code/codeBlob.inline.hpp"
30 #include "code/codeCache.inline.hpp"
31 #include "code/vmreg.inline.hpp"
32 #include "interpreter/interpreter.hpp"
33 #include "runtime/sharedRuntime.hpp"
34 #include "pauth_aarch64.hpp"
35 #ifdef COMPILER1
36 #include "c1/c1_Runtime1.hpp"
37 #endif
38
39 // Inline functions for AArch64 frames:
40
41 // Constructors:
42
43 inline frame::frame() {
44 _pc = nullptr;
45 _sp = nullptr;
46 _unextended_sp = nullptr;
47 _fp = nullptr;
48 _cb = nullptr;
49 _deopt_state = unknown;
50 _sp_is_trusted = false;
51 _on_heap = false;
52 DEBUG_ONLY(_frame_index = -1;)
53 }
54
55 static int spin;
56
57 inline void frame::init(intptr_t* sp, intptr_t* fp, address pc) {
390 assert(_cb == CodeCache::find_blob(pc()), "Must be the same");
391 if (_cb != nullptr) return sender_for_compiled_frame(map);
392
393 // Must be native-compiled frame, i.e. the marshaling code for native
394 // methods that exists in the core system.
395
396 // Native code may or may not have signed the return address, we have no way to be sure or what
397 // signing methods they used. Instead, just ensure the stripped value is used.
398
399 return frame(sender_sp(), link(), sender_pc());
400 }
401
402 inline frame frame::sender_for_compiled_frame(RegisterMap* map) const {
403 // we cannot rely upon the last fp having been saved to the thread
404 // in C2 code but it will have been pushed onto the stack. so we
405 // have to find it relative to the unextended sp
406
407 assert(_cb->frame_size() > 0, "must have non-zero frame size");
408 intptr_t* l_sender_sp = (!PreserveFramePointer || _sp_is_trusted) ? unextended_sp() + _cb->frame_size()
409 : sender_sp();
410 #ifdef ASSERT
411 address sender_pc_copy = pauth_strip_verifiable((address) *(l_sender_sp-1));
412 #endif
413
414 assert(!_sp_is_trusted || l_sender_sp == real_fp(), "");
415
416 intptr_t** saved_fp_addr = (intptr_t**) (l_sender_sp - frame::sender_sp_offset);
417
418 // Repair the sender sp if the frame has been extended
419 l_sender_sp = repair_sender_sp(l_sender_sp, saved_fp_addr);
420
421 // The return_address is always the word on the stack.
422 // For ROP protection, C1/C2 will have signed the sender_pc,
423 // but there is no requirement to authenticate it here.
424 address sender_pc = pauth_strip_verifiable((address) *(l_sender_sp - 1));
425
426 #ifdef ASSERT
427 if (sender_pc != sender_pc_copy) {
428 // When extending the stack in the callee method entry to make room for unpacking of value
429 // type args, we keep a copy of the sender pc at the expected location in the callee frame.
430 // If the sender pc is patched due to deoptimization, the copy is not consistent anymore.
431 nmethod* nm = CodeCache::find_blob(sender_pc)->as_nmethod();
432 assert(sender_pc == nm->deopt_mh_handler_begin() || sender_pc == nm->deopt_handler_begin(), "unexpected sender pc");
433 }
434 #endif
435
436 if (map->update_map()) {
437 // Tell GC to use argument oopmaps for some runtime stubs that need it.
438 // For C1, the runtime stub might not have oop maps, so set this flag
439 // outside of update_register_map.
440 bool c1_buffering = false;
441 #ifdef COMPILER1
442 nmethod* nm = _cb->as_nmethod_or_null();
443 if (nm != nullptr && nm->is_compiled_by_c1() && nm->method()->has_scalarized_args() &&
444 pc() < nm->verified_inline_entry_point()) {
445 // The VEP and VIEP(RO) of C1-compiled methods call buffer_inline_args_xxx
446 // before doing any argument shuffling, so we need to scan the oops
447 // as the caller passes them.
448 c1_buffering = true;
449 }
450 #endif
451 if (!_cb->is_nmethod() || c1_buffering) { // compiled frames do not use callee-saved registers
452 bool caller_args = _cb->caller_must_gc_arguments(map->thread()) || c1_buffering;
453 map->set_include_argument_oops(caller_args);
454 if (oop_map() != nullptr) {
455 _oop_map->update_register_map(this, map);
456 }
457 } else {
458 assert(!_cb->caller_must_gc_arguments(map->thread()), "");
459 assert(!map->include_argument_oops(), "");
460 assert(oop_map() == nullptr || !oop_map()->has_any(OopMapValue::callee_saved_value), "callee-saved value in compiled frame");
461 }
462
463 // Since the prolog does the save and restore of FP there is no oopmap
464 // for it so we must fill in its location as if there was an oopmap entry
465 // since if our caller was compiled code there could be live jvm state in it.
466 update_map_with_saved_link(map, saved_fp_addr);
467 }
468
469 if (Continuation::is_return_barrier_entry(sender_pc)) {
470 if (map->walk_cont()) { // about to walk into an h-stack
471 return Continuation::top_frame(*this, map);
472 } else {
473 return Continuation::continuation_bottom_sender(map->thread(), *this, l_sender_sp);
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