Mercurial > hg > graal-compiler
diff src/cpu/x86/vm/c1_MacroAssembler_x86.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | dc7f315e41f7 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/cpu/x86/vm/c1_MacroAssembler_x86.hpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,114 @@ +/* + * Copyright 1999-2005 Sun Microsystems, 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +// C1_MacroAssembler contains high-level macros for C1 + + private: + int _rsp_offset; // track rsp changes + // initialization + void pd_init() { _rsp_offset = 0; } + + public: + void try_allocate( + Register obj, // result: pointer to object after successful allocation + Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise + int con_size_in_bytes, // object size in bytes if known at compile time + Register t1, // temp register + Register t2, // temp register + Label& slow_case // continuation point if fast allocation fails + ); + + void initialize_header(Register obj, Register klass, Register len, Register t1, Register t2); + void initialize_body(Register obj, Register len_in_bytes, int hdr_size_in_bytes, Register t1); + + // locking + // hdr : must be rax, contents destroyed + // obj : must point to the object to lock, contents preserved + // disp_hdr: must point to the displaced header location, contents preserved + // scratch : scratch register, contents destroyed + // returns code offset at which to add null check debug information + int lock_object (Register swap, Register obj, Register disp_hdr, Register scratch, Label& slow_case); + + // unlocking + // hdr : contents destroyed + // obj : must point to the object to lock, contents preserved + // disp_hdr: must be eax & must point to the displaced header location, contents destroyed + void unlock_object(Register swap, Register obj, Register lock, Label& slow_case); + + void initialize_object( + Register obj, // result: pointer to object after successful allocation + Register klass, // object klass + Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise + int con_size_in_bytes, // object size in bytes if known at compile time + Register t1, // temp register + Register t2 // temp register + ); + + // allocation of fixed-size objects + // (can also be used to allocate fixed-size arrays, by setting + // hdr_size correctly and storing the array length afterwards) + // obj : must be rax, will contain pointer to allocated object + // t1, t2 : scratch registers - contents destroyed + // header_size: size of object header in words + // object_size: total size of object in words + // slow_case : exit to slow case implementation if fast allocation fails + void allocate_object(Register obj, Register t1, Register t2, int header_size, int object_size, Register klass, Label& slow_case); + + enum { + max_array_allocation_length = 0x00FFFFFF + }; + + // allocation of arrays + // obj : must be rax, will contain pointer to allocated object + // len : array length in number of elements + // t : scratch register - contents destroyed + // header_size: size of object header in words + // f : element scale factor + // slow_case : exit to slow case implementation if fast allocation fails + void allocate_array(Register obj, Register len, Register t, Register t2, int header_size, Address::ScaleFactor f, Register klass, Label& slow_case); + + int rsp_offset() const { return _rsp_offset; } + void set_rsp_offset(int n) { _rsp_offset = n; } + + // Note: NEVER push values directly, but only through following push_xxx functions; + // This helps us to track the rsp changes compared to the entry rsp (->_rsp_offset) + + void push_jint (jint i) { _rsp_offset++; pushl(i); } + void push_oop (jobject o) { _rsp_offset++; pushoop(o); } + void push_addr (Address a) { _rsp_offset++; pushl(a); } + void push_reg (Register r) { _rsp_offset++; pushl(r); } + void pop (Register r) { _rsp_offset--; popl (r); assert(_rsp_offset >= 0, "stack offset underflow"); } + + void dec_stack (int nof_words) { + _rsp_offset -= nof_words; + assert(_rsp_offset >= 0, "stack offset underflow"); + addl(rsp, wordSize * nof_words); + } + + void dec_stack_after_call (int nof_words) { + _rsp_offset -= nof_words; + assert(_rsp_offset >= 0, "stack offset underflow"); + } + + void invalidate_registers(bool inv_rax, bool inv_rbx, bool inv_rcx, bool inv_rdx, bool inv_rsi, bool inv_rdi) PRODUCT_RETURN;