/
frame_aarch64.inline.hpp
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frame_aarch64.inline.hpp
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/*
* Copyright (c) 1997, 2021, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2014, Red Hat Inc. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#ifndef CPU_AARCH64_FRAME_AARCH64_INLINE_HPP
#define CPU_AARCH64_FRAME_AARCH64_INLINE_HPP
#include "code/codeCache.hpp"
#include "code/vmreg.inline.hpp"
#include "pauth_aarch64.hpp"
// Inline functions for AArch64 frames:
// Constructors:
inline frame::frame() {
_pc = NULL;
_sp = NULL;
_unextended_sp = NULL;
_fp = NULL;
_cb = NULL;
_deopt_state = unknown;
}
static int spin;
inline void frame::init(intptr_t* sp, intptr_t* fp, address pc) {
assert(pauth_ptr_is_raw(pc), "cannot be signed");
intptr_t a = intptr_t(sp);
intptr_t b = intptr_t(fp);
_sp = sp;
_unextended_sp = sp;
_fp = fp;
_pc = pc;
assert(pc != NULL, "no pc?");
_cb = CodeCache::find_blob(pc);
adjust_unextended_sp();
address original_pc = CompiledMethod::get_deopt_original_pc(this);
if (original_pc != NULL) {
_pc = original_pc;
_deopt_state = is_deoptimized;
} else {
_deopt_state = not_deoptimized;
}
}
inline frame::frame(intptr_t* sp, intptr_t* fp, address pc) {
init(sp, fp, pc);
}
inline frame::frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc) {
assert(pauth_ptr_is_raw(pc), "cannot be signed");
intptr_t a = intptr_t(sp);
intptr_t b = intptr_t(fp);
_sp = sp;
_unextended_sp = unextended_sp;
_fp = fp;
_pc = pc;
assert(pc != NULL, "no pc?");
_cb = CodeCache::find_blob(pc);
adjust_unextended_sp();
address original_pc = CompiledMethod::get_deopt_original_pc(this);
if (original_pc != NULL) {
_pc = original_pc;
assert(_cb->as_compiled_method()->insts_contains_inclusive(_pc),
"original PC must be in the main code section of the the compiled method (or must be immediately following it)");
_deopt_state = is_deoptimized;
} else {
_deopt_state = not_deoptimized;
}
}
inline frame::frame(intptr_t* sp, intptr_t* fp) {
intptr_t a = intptr_t(sp);
intptr_t b = intptr_t(fp);
_sp = sp;
_unextended_sp = sp;
_fp = fp;
_pc = (address)(sp[-1]);
// Here's a sticky one. This constructor can be called via AsyncGetCallTrace
// when last_Java_sp is non-null but the pc fetched is junk. If we are truly
// unlucky the junk value could be to a zombied method and we'll die on the
// find_blob call. This is also why we can have no asserts on the validity
// of the pc we find here. AsyncGetCallTrace -> pd_get_top_frame_for_signal_handler
// -> pd_last_frame should use a specialized version of pd_last_frame which could
// call a specilaized frame constructor instead of this one.
// Then we could use the assert below. However this assert is of somewhat dubious
// value.
// assert(_pc != NULL, "no pc?");
_cb = CodeCache::find_blob(_pc);
adjust_unextended_sp();
address original_pc = CompiledMethod::get_deopt_original_pc(this);
if (original_pc != NULL) {
_pc = original_pc;
_deopt_state = is_deoptimized;
} else {
_deopt_state = not_deoptimized;
}
}
// Accessors
inline bool frame::equal(frame other) const {
bool ret = sp() == other.sp()
&& unextended_sp() == other.unextended_sp()
&& fp() == other.fp()
&& pc() == other.pc();
assert(!ret || ret && cb() == other.cb() && _deopt_state == other._deopt_state, "inconsistent construction");
return ret;
}
// Return unique id for this frame. The id must have a value where we can distinguish
// identity and younger/older relationship. NULL represents an invalid (incomparable)
// frame.
inline intptr_t* frame::id(void) const { return unextended_sp(); }
// Return true if the frame is older (less recent activation) than the frame represented by id
inline bool frame::is_older(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
return this->id() > id ; }
inline intptr_t* frame::link() const { return (intptr_t*) *(intptr_t **)addr_at(link_offset); }
inline intptr_t* frame::unextended_sp() const { return _unextended_sp; }
// Return address:
inline address* frame::sender_pc_addr() const { return (address*) addr_at( return_addr_offset); }
inline address frame::sender_pc_maybe_signed() const { return *sender_pc_addr(); }
inline address frame::sender_pc() const { return pauth_strip_pointer(sender_pc_maybe_signed()); }
inline intptr_t* frame::sender_sp() const { return addr_at( sender_sp_offset); }
inline intptr_t** frame::interpreter_frame_locals_addr() const {
return (intptr_t**)addr_at(interpreter_frame_locals_offset);
}
inline intptr_t* frame::interpreter_frame_last_sp() const {
return *(intptr_t**)addr_at(interpreter_frame_last_sp_offset);
}
inline intptr_t* frame::interpreter_frame_bcp_addr() const {
return (intptr_t*)addr_at(interpreter_frame_bcp_offset);
}
inline intptr_t* frame::interpreter_frame_mdp_addr() const {
return (intptr_t*)addr_at(interpreter_frame_mdp_offset);
}
// Constant pool cache
inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
return (ConstantPoolCache**)addr_at(interpreter_frame_cache_offset);
}
// Method
inline Method** frame::interpreter_frame_method_addr() const {
return (Method**)addr_at(interpreter_frame_method_offset);
}
// Mirror
inline oop* frame::interpreter_frame_mirror_addr() const {
return (oop*)addr_at(interpreter_frame_mirror_offset);
}
// top of expression stack
inline intptr_t* frame::interpreter_frame_tos_address() const {
intptr_t* last_sp = interpreter_frame_last_sp();
if (last_sp == NULL) {
return sp();
} else {
// sp() may have been extended or shrunk by an adapter. At least
// check that we don't fall behind the legal region.
// For top deoptimized frame last_sp == interpreter_frame_monitor_end.
assert(last_sp <= (intptr_t*) interpreter_frame_monitor_end(), "bad tos");
return last_sp;
}
}
inline oop* frame::interpreter_frame_temp_oop_addr() const {
return (oop *)(fp() + interpreter_frame_oop_temp_offset);
}
inline int frame::interpreter_frame_monitor_size() {
return BasicObjectLock::size();
}
// expression stack
// (the max_stack arguments are used by the GC; see class FrameClosure)
inline intptr_t* frame::interpreter_frame_expression_stack() const {
intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end();
return monitor_end-1;
}
// Entry frames
inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const {
return (JavaCallWrapper**)addr_at(entry_frame_call_wrapper_offset);
}
// Compiled frames
inline oop frame::saved_oop_result(RegisterMap* map) const {
PRAGMA_DIAG_PUSH
PRAGMA_NONNULL_IGNORED
oop* result_adr = (oop *)map->location(r0->as_VMReg());
PRAGMA_DIAG_POP
guarantee(result_adr != NULL, "bad register save location");
return (*result_adr);
}
inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
PRAGMA_DIAG_PUSH
PRAGMA_NONNULL_IGNORED
oop* result_adr = (oop *)map->location(r0->as_VMReg());
PRAGMA_DIAG_POP
guarantee(result_adr != NULL, "bad register save location");
*result_adr = obj;
}
#endif // CPU_AARCH64_FRAME_AARCH64_INLINE_HPP