duke@435: /*
stefank@2314:  * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #ifndef CPU_X86_VM_C1_MACROASSEMBLER_X86_HPP
stefank@2314: #define CPU_X86_VM_C1_MACROASSEMBLER_X86_HPP
stefank@2314: 
duke@435: // C1_MacroAssembler contains high-level macros for C1
duke@435: 
duke@435:  private:
duke@435:   int _rsp_offset;    // track rsp changes
duke@435:   // initialization
duke@435:   void pd_init() { _rsp_offset = 0; }
duke@435: 
duke@435:  public:
duke@435:   void try_allocate(
duke@435:     Register obj,                      // result: pointer to object after successful allocation
duke@435:     Register var_size_in_bytes,        // object size in bytes if unknown at compile time; invalid otherwise
duke@435:     int      con_size_in_bytes,        // object size in bytes if   known at compile time
duke@435:     Register t1,                       // temp register
duke@435:     Register t2,                       // temp register
duke@435:     Label&   slow_case                 // continuation point if fast allocation fails
duke@435:   );
duke@435: 
duke@435:   void initialize_header(Register obj, Register klass, Register len, Register t1, Register t2);
duke@435:   void initialize_body(Register obj, Register len_in_bytes, int hdr_size_in_bytes, Register t1);
duke@435: 
duke@435:   // locking
duke@435:   // hdr     : must be rax, contents destroyed
duke@435:   // obj     : must point to the object to lock, contents preserved
duke@435:   // disp_hdr: must point to the displaced header location, contents preserved
duke@435:   // scratch : scratch register, contents destroyed
duke@435:   // returns code offset at which to add null check debug information
duke@435:   int lock_object  (Register swap, Register obj, Register disp_hdr, Register scratch, Label& slow_case);
duke@435: 
duke@435:   // unlocking
duke@435:   // hdr     : contents destroyed
duke@435:   // obj     : must point to the object to lock, contents preserved
duke@435:   // disp_hdr: must be eax & must point to the displaced header location, contents destroyed
duke@435:   void unlock_object(Register swap, Register obj, Register lock, Label& slow_case);
duke@435: 
duke@435:   void initialize_object(
duke@435:     Register obj,                      // result: pointer to object after successful allocation
duke@435:     Register klass,                    // object klass
duke@435:     Register var_size_in_bytes,        // object size in bytes if unknown at compile time; invalid otherwise
duke@435:     int      con_size_in_bytes,        // object size in bytes if   known at compile time
duke@435:     Register t1,                       // temp register
duke@435:     Register t2                        // temp register
duke@435:   );
duke@435: 
duke@435:   // allocation of fixed-size objects
duke@435:   // (can also be used to allocate fixed-size arrays, by setting
duke@435:   // hdr_size correctly and storing the array length afterwards)
duke@435:   // obj        : must be rax, will contain pointer to allocated object
duke@435:   // t1, t2     : scratch registers - contents destroyed
duke@435:   // header_size: size of object header in words
duke@435:   // object_size: total size of object in words
duke@435:   // slow_case  : exit to slow case implementation if fast allocation fails
duke@435:   void allocate_object(Register obj, Register t1, Register t2, int header_size, int object_size, Register klass, Label& slow_case);
duke@435: 
duke@435:   enum {
duke@435:     max_array_allocation_length = 0x00FFFFFF
duke@435:   };
duke@435: 
duke@435:   // allocation of arrays
duke@435:   // obj        : must be rax, will contain pointer to allocated object
duke@435:   // len        : array length in number of elements
duke@435:   // t          : scratch register - contents destroyed
duke@435:   // header_size: size of object header in words
duke@435:   // f          : element scale factor
duke@435:   // slow_case  : exit to slow case implementation if fast allocation fails
duke@435:   void allocate_array(Register obj, Register len, Register t, Register t2, int header_size, Address::ScaleFactor f, Register klass, Label& slow_case);
duke@435: 
duke@435:   int  rsp_offset() const { return _rsp_offset; }
duke@435:   void set_rsp_offset(int n) { _rsp_offset = n; }
duke@435: 
duke@435:   // Note: NEVER push values directly, but only through following push_xxx functions;
duke@435:   //       This helps us to track the rsp changes compared to the entry rsp (->_rsp_offset)
duke@435: 
never@739:   void push_jint (jint i)     { _rsp_offset++; push(i); }
duke@435:   void push_oop  (jobject o)  { _rsp_offset++; pushoop(o); }
never@739:   // Seems to always be in wordSize
never@739:   void push_addr (Address a)  { _rsp_offset++; pushptr(a); }
never@739:   void push_reg  (Register r) { _rsp_offset++; push(r); }
never@739:   void pop_reg   (Register r) { _rsp_offset--; pop(r); assert(_rsp_offset >= 0, "stack offset underflow"); }
duke@435: 
duke@435:   void dec_stack (int nof_words) {
duke@435:     _rsp_offset -= nof_words;
duke@435:     assert(_rsp_offset >= 0, "stack offset underflow");
never@739:     addptr(rsp, wordSize * nof_words);
duke@435:   }
duke@435: 
duke@435:   void dec_stack_after_call (int nof_words) {
duke@435:     _rsp_offset -= nof_words;
duke@435:     assert(_rsp_offset >= 0, "stack offset underflow");
duke@435:   }
duke@435: 
duke@435:   void invalidate_registers(bool inv_rax, bool inv_rbx, bool inv_rcx, bool inv_rdx, bool inv_rsi, bool inv_rdi) PRODUCT_RETURN;
stefank@2314: 
stefank@2314: #endif // CPU_X86_VM_C1_MACROASSEMBLER_X86_HPP