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/*
* Copyright (c) 2000, 2022, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2012, 2015 SAP SE. 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_PPC_FRAME_PPC_INLINE_HPP
#define CPU_PPC_FRAME_PPC_INLINE_HPP
#include "code/codeBlob.inline.hpp"
#include "code/codeCache.inline.hpp"
#include "code/vmreg.inline.hpp"
#include "runtime/sharedRuntime.hpp"
#include "utilities/align.hpp"
// Inline functions for ppc64 frames:
// Initialize frame members (_sp must be given)
inline void frame::setup() {
if (_pc == nullptr) {
_pc = (address)own_abi()->lr;
assert(_pc != nullptr, "must have PC");
}
if (_cb == nullptr) {
_cb = CodeCache::find_blob(_pc);
}
if (_unextended_sp == nullptr) {
_unextended_sp = _sp;
}
if (_fp == nullptr) {
// The back link for compiled frames on the heap is not valid
if (is_heap_frame()) {
// fp for interpreted frames should have been derelativized and passed to the constructor
assert(is_compiled_frame(), "");
// The back link for compiled frames on the heap is invalid.
_fp = _unextended_sp + _cb->frame_size();
} else {
_fp = (intptr_t*)own_abi()->callers_sp;
}
}
address original_pc = CompiledMethod::get_deopt_original_pc(this);
if (original_pc != nullptr) {
_pc = original_pc;
_deopt_state = is_deoptimized;
assert(_cb == nullptr || _cb->as_compiled_method()->insts_contains_inclusive(_pc),
"original PC must be in the main code section of the compiled method (or must be immediately following it)");
} else {
if (_cb == SharedRuntime::deopt_blob()) {
_deopt_state = is_deoptimized;
} else {
_deopt_state = not_deoptimized;
}
}
// Continuation frames on the java heap are not aligned.
// When thawing interpreted frames the sp can be unaligned (see new_stack_frame()).
assert(_on_heap || (is_aligned(_sp, alignment_in_bytes) || is_interpreted_frame()) && is_aligned(_fp, alignment_in_bytes),
"invalid alignment sp:" PTR_FORMAT " unextended_sp:" PTR_FORMAT " fp:" PTR_FORMAT, p2i(_sp), p2i(_unextended_sp), p2i(_fp));
}
// Constructors
// Initialize all fields
inline frame::frame() : _sp(nullptr), _pc(nullptr), _cb(nullptr), _oop_map(nullptr), _deopt_state(unknown),
_on_heap(false), DEBUG_ONLY(_frame_index(-1) COMMA) _unextended_sp(nullptr), _fp(nullptr) {}
inline frame::frame(intptr_t* sp) : frame(sp, nullptr) {}
inline frame::frame(intptr_t* sp, intptr_t* fp, address pc) : frame(sp, pc, nullptr, fp, nullptr) {}
inline frame::frame(intptr_t* sp, address pc, intptr_t* unextended_sp, intptr_t* fp, CodeBlob* cb)
: _sp(sp), _pc(pc), _cb(cb), _oop_map(nullptr),
_on_heap(false), DEBUG_ONLY(_frame_index(-1) COMMA) _unextended_sp(unextended_sp), _fp(fp) {
setup();
}
inline frame::frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc, CodeBlob* cb, const ImmutableOopMap* oop_map)
: _sp(sp), _pc(pc), _cb(cb), _oop_map(oop_map),
_on_heap(false), DEBUG_ONLY(_frame_index(-1) COMMA) _unextended_sp(unextended_sp), _fp(fp) {
assert(_cb != nullptr, "pc: " INTPTR_FORMAT, p2i(pc));
setup();
}
inline frame::frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc, CodeBlob* cb,
const ImmutableOopMap* oop_map, bool on_heap)
: _sp(sp), _pc(pc), _cb(cb), _oop_map(oop_map), _deopt_state(not_deoptimized),
_on_heap(on_heap), DEBUG_ONLY(_frame_index(-1) COMMA) _unextended_sp(unextended_sp), _fp(fp) {
// In thaw, non-heap frames use this constructor to pass oop_map. I don't know why.
assert(_on_heap || _cb != nullptr, "these frames are always heap frames");
if (cb != nullptr) {
setup();
}
#ifdef ASSERT
// The following assertion has been disabled because it would sometime trap for Continuation.run,
// which is not *in* a continuation and therefore does not clear the _cont_fastpath flag, but this
// is benign even in fast mode (see Freeze::setup_jump)
// We might freeze deoptimized frame in slow mode
// assert(_pc == pc && _deopt_state == not_deoptimized, "");
#endif
}
// Accessors
// 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 {
// Use _fp. _sp or _unextended_sp wouldn't be correct due to resizing.
return _fp;
}
// Return true if this 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");
// Stack grows towards smaller addresses on ppc64.
return this->id() > id;
}
inline int frame::frame_size() const {
// Stack grows towards smaller addresses on PPC64: sender is at a higher address.
return sender_sp() - sp();
}
// Return the frame's stack pointer before it has been extended by a
// c2i adapter.
// i2c adapters also modify the frame they are applied on but shared code
// must never use an interpreted frames unextended sp directly as the value
// is platform dependent.
inline intptr_t* frame::unextended_sp() const { assert_absolute(); return _unextended_sp; }
inline void frame::set_unextended_sp(intptr_t* value) { _unextended_sp = value; }
inline int frame::offset_unextended_sp() const { assert_offset(); return _offset_unextended_sp; }
inline void frame::set_offset_unextended_sp(int value) { assert_on_heap(); _offset_unextended_sp = value; }
// All frames have this field.
inline address frame::sender_pc() const {
return (address)callers_abi()->lr;
}
inline address* frame::sender_pc_addr() const {
return (address*)&(callers_abi()->lr);
}
// All frames have this field.
inline intptr_t* frame::sender_sp() const {
return (intptr_t*)callers_abi();
}
// All frames have this field.
inline intptr_t* frame::link() const {
return (intptr_t*)callers_abi()->callers_sp;
}
inline intptr_t* frame::link_or_null() const {
return link();
}
inline intptr_t* frame::real_fp() const {
return fp();
}
// Template Interpreter frame value accessors.
inline frame::ijava_state* frame::get_ijava_state() const {
return (ijava_state*) ((uintptr_t)fp() - ijava_state_size);
}
inline intptr_t** frame::interpreter_frame_locals_addr() const {
return (intptr_t**)addr_at(ijava_idx(locals));
}
inline intptr_t* frame::interpreter_frame_bcp_addr() const {
return (intptr_t*) &(get_ijava_state()->bcp);
}
inline intptr_t* frame::interpreter_frame_mdp_addr() const {
return (intptr_t*) &(get_ijava_state()->mdx);
}
inline BasicObjectLock* frame::interpreter_frame_monitor_begin() const {
return (BasicObjectLock*) get_ijava_state();
}
// Return register stack slot addr at which currently interpreted method is found.
inline Method** frame::interpreter_frame_method_addr() const {
return (Method**) &(get_ijava_state()->method);
}
inline oop* frame::interpreter_frame_mirror_addr() const {
return (oop*) &(get_ijava_state()->mirror);
}
inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
return (ConstantPoolCache**) &(get_ijava_state()->cpoolCache);
}
inline oop* frame::interpreter_frame_temp_oop_addr() const {
return (oop*) &(get_ijava_state()->oop_tmp);
}
inline intptr_t* frame::interpreter_frame_esp() const {
return (intptr_t*) at(ijava_idx(esp));
}
// Convenient setters
inline void frame::interpreter_frame_set_monitor_end(BasicObjectLock* end) { get_ijava_state()->monitors = (intptr_t) end;}
inline void frame::interpreter_frame_set_cpcache(ConstantPoolCache* cp) { *interpreter_frame_cache_addr() = cp; }
inline void frame::interpreter_frame_set_esp(intptr_t* esp) { get_ijava_state()->esp = (intptr_t) esp; }
inline void frame::interpreter_frame_set_top_frame_sp(intptr_t* top_frame_sp) { get_ijava_state()->top_frame_sp = (intptr_t) top_frame_sp; }
inline void frame::interpreter_frame_set_sender_sp(intptr_t* sender_sp) { get_ijava_state()->sender_sp = (intptr_t) sender_sp; }
inline intptr_t* frame::interpreter_frame_expression_stack() const {
intptr_t* monitor_end = (intptr_t*) interpreter_frame_monitor_end();
return monitor_end-1;
}
// top of expression stack
inline intptr_t* frame::interpreter_frame_tos_address() const {
return (intptr_t*)at(ijava_idx(esp)) + Interpreter::stackElementWords;
}
inline int frame::interpreter_frame_monitor_size() {
// Number of stack slots for a monitor.
return align_up(BasicObjectLock::size(), // number of stack slots
WordsPerLong); // number of stack slots for a Java long
}
inline int frame::interpreter_frame_monitor_size_in_bytes() {
return frame::interpreter_frame_monitor_size() * wordSize;
}
// entry frames
inline intptr_t* frame::entry_frame_argument_at(int offset) const {
// Since an entry frame always calls the interpreter first, the
// parameters are on the stack and relative to known register in the
// entry frame.
intptr_t* tos = (intptr_t*)get_entry_frame_locals()->arguments_tos_address;
return &tos[offset + 1]; // prepushed tos
}
inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const {
return (JavaCallWrapper**)&get_entry_frame_locals()->call_wrapper_address;
}
inline bool frame::is_interpreted_frame() const {
return Interpreter::contains(pc());
}
inline frame frame::sender_raw(RegisterMap* map) const {
// Default is we do have to follow them. The sender_for_xxx will
// update it accordingly.
map->set_include_argument_oops(false);
if (map->in_cont()) { // already in an h-stack
return map->stack_chunk()->sender(*this, map);
}
if (is_entry_frame()) return sender_for_entry_frame(map);
if (is_interpreted_frame()) return sender_for_interpreter_frame(map);
assert(_cb == CodeCache::find_blob(pc()), "Must be the same");
if (_cb != nullptr) return sender_for_compiled_frame(map);
// Must be native-compiled frame, i.e. the marshaling code for native
// methods that exists in the core system.
return frame(sender_sp(), sender_pc());
}
inline frame frame::sender(RegisterMap* map) const {
frame result = sender_raw(map);
if (map->process_frames() && !map->in_cont()) {
StackWatermarkSet::on_iteration(map->thread(), result);
}
return result;
}
inline frame frame::sender_for_compiled_frame(RegisterMap *map) const {
assert(map != nullptr, "map must be set");
intptr_t* sender_sp = this->sender_sp();
address sender_pc = this->sender_pc();
if (map->update_map()) {
// Tell GC to use argument oopmaps for some runtime stubs that need it.
// For C1, the runtime stub might not have oop maps, so set this flag
// outside of update_register_map.
if (!_cb->is_compiled()) { // compiled frames do not use callee-saved registers
map->set_include_argument_oops(_cb->caller_must_gc_arguments(map->thread()));
if (oop_map() != nullptr) {
_oop_map->update_register_map(this, map);
}
} else {
assert(!_cb->caller_must_gc_arguments(map->thread()), "");
assert(!map->include_argument_oops(), "");
assert(oop_map() == NULL || !oop_map()->has_any(OopMapValue::callee_saved_value), "callee-saved value in compiled frame");
}
}
assert(sender_sp != sp(), "must have changed");
if (Continuation::is_return_barrier_entry(sender_pc)) {
if (map->walk_cont()) { // about to walk into an h-stack
return Continuation::top_frame(*this, map);
} else {
return Continuation::continuation_bottom_sender(map->thread(), *this, sender_sp);
}
}
return frame(sender_sp, sender_pc);
}
inline oop frame::saved_oop_result(RegisterMap* map) const {
oop* result_adr = (oop *)map->location(R3->as_VMReg(), sp());
guarantee(result_adr != NULL, "bad register save location");
return *result_adr;
}
inline void frame::set_saved_oop_result(RegisterMap* map, oop obj) {
oop* result_adr = (oop *)map->location(R3->as_VMReg(), sp());
guarantee(result_adr != NULL, "bad register save location");
*result_adr = obj;
}
inline const ImmutableOopMap* frame::get_oop_map() const {
if (_cb == NULL) return NULL;
if (_cb->oop_maps() != NULL) {
NativePostCallNop* nop = nativePostCallNop_at(_pc);
if (nop != NULL && nop->displacement() != 0) {
int slot = ((nop->displacement() >> 24) & 0xff);
return _cb->oop_map_for_slot(slot, _pc);
}
const ImmutableOopMap* oop_map = OopMapSet::find_map(this);
return oop_map;
}
return NULL;
}
inline int frame::compiled_frame_stack_argsize() const {
assert(cb()->is_compiled(), "");
return (cb()->as_compiled_method()->method()->num_stack_arg_slots() * VMRegImpl::stack_slot_size) >> LogBytesPerWord;
}
inline void frame::interpreted_frame_oop_map(InterpreterOopMap* mask) const {
assert(mask != NULL, "");
Method* m = interpreter_frame_method();
int bci = interpreter_frame_bci();
m->mask_for(bci, mask); // OopMapCache::compute_one_oop_map(m, bci, mask);
}
inline int frame::sender_sp_ret_address_offset() {
return -(int)(_abi0(lr) >> LogBytesPerWord); // offset in words
}
template <typename RegisterMapT>
void frame::update_map_with_saved_link(RegisterMapT* map, intptr_t** link_addr) {
// Nothing to do.
}
#endif // CPU_PPC_FRAME_PPC_INLINE_HPP
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