jdk8-mips64-public/hotspot: src/cpu/x86/vm/frame_x86.inline.hpp@e8260b6328fb (annotated)

src/cpu/x86/vm/frame_x86.inline.hpp@e8260b6328fb (annotated)

src/cpu/x86/vm/frame_x86.inline.hpp

Fri, 29 May 2015 10:58:45 +0200

author: zmajo
date: Fri, 29 May 2015 10:58:45 +0200
changeset 7854: e8260b6328fb
parent 7553: f43fad8786fc
child 7994: 04ff2f6cd0eb
child 8877: f04097176542
permissions: -rw-r--r--

8068945: Use RBP register as proper frame pointer in JIT compiled code on x86
Summary: Introduce the PreserveFramePointer flag to control if RBP is used as the frame pointer or as a general purpose register.
Reviewed-by: kvn, roland, dlong, enevill, shade

 /*
  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. 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_X86_VM_FRAME_X86_INLINE_HPP
 #define CPU_X86_VM_FRAME_X86_INLINE_HPP
 #include "code/codeCache.hpp"
 // Inline functions for Intel frames:
 // Constructors:
 inline frame::frame() {
   _pc = NULL;
   _sp = NULL;
   _unextended_sp = NULL;
   _fp = NULL;
   _cb = NULL;
   _deopt_state = unknown;
 }
 inline void frame::init(intptr_t* sp, intptr_t* fp, address pc) {
   _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 = nmethod::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) {
   _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 = nmethod::get_deopt_original_pc(this);
   if (original_pc != NULL) {
     _pc = original_pc;
     assert(((nmethod*)_cb)->insts_contains(_pc), "original PC must be in nmethod");
     _deopt_state = is_deoptimized;
   } else {
     _deopt_state = not_deoptimized;
   }
 }
 inline frame::frame(intptr_t* sp, 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 specialized 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 = nmethod::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(); }
 // Relationals on frames based
 // Return true if the frame is younger (more recent activation) than the frame represented by id
 inline bool frame::is_younger(intptr_t* id) const { assert(this->id() != NULL && id != NULL, "NULL frame id");
                                                     return this->id() < id ; }
 // 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 void      frame::set_link(intptr_t* addr)  { *(intptr_t **)addr_at(link_offset) = addr; }
 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()           const { return *sender_pc_addr(); }
 // return address of param, zero origin index.
 inline address* frame::native_param_addr(int idx) const { return (address*) addr_at( native_frame_initial_param_offset+idx); }
 #ifdef CC_INTERP
 inline interpreterState frame::get_interpreterState() const {
   return ((interpreterState)addr_at( -((int)sizeof(BytecodeInterpreter))/wordSize ));
 }
 inline intptr_t*    frame::sender_sp()        const {
   // Hmm this seems awfully expensive QQQ, is this really called with interpreted frames?
   if (is_interpreted_frame()) {
     assert(false, "should never happen");
     return get_interpreterState()->sender_sp();
   } else {
     return            addr_at(sender_sp_offset);
   }
 }
 inline intptr_t** frame::interpreter_frame_locals_addr() const {
   assert(is_interpreted_frame(), "must be interpreted");
   return &(get_interpreterState()->_locals);
 }
 inline intptr_t* frame::interpreter_frame_bcx_addr() const {
   assert(is_interpreted_frame(), "must be interpreted");
   return (intptr_t*) &(get_interpreterState()->_bcp);
 }
 // Constant pool cache
 inline ConstantPoolCache** frame::interpreter_frame_cache_addr() const {
   assert(is_interpreted_frame(), "must be interpreted");
   return &(get_interpreterState()->_constants);
 }
 // Method
 inline Method** frame::interpreter_frame_method_addr() const {
   assert(is_interpreted_frame(), "must be interpreted");
   return &(get_interpreterState()->_method);
 }
 inline intptr_t* frame::interpreter_frame_mdx_addr() const {
   assert(is_interpreted_frame(), "must be interpreted");
   return (intptr_t*) &(get_interpreterState()->_mdx);
 }
 // top of expression stack
 inline intptr_t* frame::interpreter_frame_tos_address() const {
   assert(is_interpreted_frame(), "wrong frame type");
   return get_interpreterState()->_stack + 1;
 }
 #else /* asm interpreter */
 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_bcx_addr() const {
   return (intptr_t*)addr_at(interpreter_frame_bcx_offset);
 }
 inline intptr_t* frame::interpreter_frame_mdx_addr() const {
   return (intptr_t*)addr_at(interpreter_frame_mdx_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);
 }
 // 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);
 }
 #endif /* CC_INTERP */
 inline int frame::pd_oop_map_offset_adjustment() const {
   return 0;
 }
 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;
 }
 inline jint frame::interpreter_frame_expression_stack_direction() { return -1; }
 // Entry frames
 inline JavaCallWrapper** frame::entry_frame_call_wrapper_addr() const {
  return (JavaCallWrapper**)addr_at(entry_frame_call_wrapper_offset);
 }
 // Compiled frames
 inline int frame::local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
   return (nof_args - local_index + (local_index < nof_args ? 1: -1));
 }
 inline int frame::monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors) {
   return local_offset_for_compiler(local_index, nof_args, max_nof_locals, max_nof_monitors);
 }
 inline int frame::min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors) {
   return (nof_args - (max_nof_locals + max_nof_monitors*2) - 1);
 }
 inline bool frame::volatile_across_calls(Register reg) {
   return true;
 }
 inline oop frame::saved_oop_result(RegisterMap* map) const {
   oop* result_adr = (oop *)map->location(rax->as_VMReg());
   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(rax->as_VMReg());
   guarantee(result_adr != NULL, "bad register save location");
   *result_adr = obj;
 }
 #endif // CPU_X86_VM_FRAME_X86_INLINE_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/cpu/x86/vm/frame_x86.inline.hpp@e8260b6328fb (annotated)

src/cpu/x86/vm/frame_x86.inline.hpp