1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/cpu/x86/vm/c1_MacroAssembler_x86.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,120 @@
1.4 +/*
1.5 + * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#ifndef CPU_X86_VM_C1_MACROASSEMBLER_X86_HPP
1.29 +#define CPU_X86_VM_C1_MACROASSEMBLER_X86_HPP
1.30 +
1.31 +// C1_MacroAssembler contains high-level macros for C1
1.32 +
1.33 + private:
1.34 + int _rsp_offset; // track rsp changes
1.35 + // initialization
1.36 + void pd_init() { _rsp_offset = 0; }
1.37 +
1.38 + public:
1.39 + void try_allocate(
1.40 + Register obj, // result: pointer to object after successful allocation
1.41 + Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise
1.42 + int con_size_in_bytes, // object size in bytes if known at compile time
1.43 + Register t1, // temp register
1.44 + Register t2, // temp register
1.45 + Label& slow_case // continuation point if fast allocation fails
1.46 + );
1.47 +
1.48 + void initialize_header(Register obj, Register klass, Register len, Register t1, Register t2);
1.49 + void initialize_body(Register obj, Register len_in_bytes, int hdr_size_in_bytes, Register t1);
1.50 +
1.51 + // locking
1.52 + // hdr : must be rax, contents destroyed
1.53 + // obj : must point to the object to lock, contents preserved
1.54 + // disp_hdr: must point to the displaced header location, contents preserved
1.55 + // scratch : scratch register, contents destroyed
1.56 + // returns code offset at which to add null check debug information
1.57 + int lock_object (Register swap, Register obj, Register disp_hdr, Register scratch, Label& slow_case);
1.58 +
1.59 + // unlocking
1.60 + // hdr : contents destroyed
1.61 + // obj : must point to the object to lock, contents preserved
1.62 + // disp_hdr: must be eax & must point to the displaced header location, contents destroyed
1.63 + void unlock_object(Register swap, Register obj, Register lock, Label& slow_case);
1.64 +
1.65 + void initialize_object(
1.66 + Register obj, // result: pointer to object after successful allocation
1.67 + Register klass, // object klass
1.68 + Register var_size_in_bytes, // object size in bytes if unknown at compile time; invalid otherwise
1.69 + int con_size_in_bytes, // object size in bytes if known at compile time
1.70 + Register t1, // temp register
1.71 + Register t2 // temp register
1.72 + );
1.73 +
1.74 + // allocation of fixed-size objects
1.75 + // (can also be used to allocate fixed-size arrays, by setting
1.76 + // hdr_size correctly and storing the array length afterwards)
1.77 + // obj : must be rax, will contain pointer to allocated object
1.78 + // t1, t2 : scratch registers - contents destroyed
1.79 + // header_size: size of object header in words
1.80 + // object_size: total size of object in words
1.81 + // slow_case : exit to slow case implementation if fast allocation fails
1.82 + void allocate_object(Register obj, Register t1, Register t2, int header_size, int object_size, Register klass, Label& slow_case);
1.83 +
1.84 + enum {
1.85 + max_array_allocation_length = 0x00FFFFFF
1.86 + };
1.87 +
1.88 + // allocation of arrays
1.89 + // obj : must be rax, will contain pointer to allocated object
1.90 + // len : array length in number of elements
1.91 + // t : scratch register - contents destroyed
1.92 + // header_size: size of object header in words
1.93 + // f : element scale factor
1.94 + // slow_case : exit to slow case implementation if fast allocation fails
1.95 + void allocate_array(Register obj, Register len, Register t, Register t2, int header_size, Address::ScaleFactor f, Register klass, Label& slow_case);
1.96 +
1.97 + int rsp_offset() const { return _rsp_offset; }
1.98 + void set_rsp_offset(int n) { _rsp_offset = n; }
1.99 +
1.100 + // Note: NEVER push values directly, but only through following push_xxx functions;
1.101 + // This helps us to track the rsp changes compared to the entry rsp (->_rsp_offset)
1.102 +
1.103 + void push_jint (jint i) { _rsp_offset++; push(i); }
1.104 + void push_oop (jobject o) { _rsp_offset++; pushoop(o); }
1.105 + // Seems to always be in wordSize
1.106 + void push_addr (Address a) { _rsp_offset++; pushptr(a); }
1.107 + void push_reg (Register r) { _rsp_offset++; push(r); }
1.108 + void pop_reg (Register r) { _rsp_offset--; pop(r); assert(_rsp_offset >= 0, "stack offset underflow"); }
1.109 +
1.110 + void dec_stack (int nof_words) {
1.111 + _rsp_offset -= nof_words;
1.112 + assert(_rsp_offset >= 0, "stack offset underflow");
1.113 + addptr(rsp, wordSize * nof_words);
1.114 + }
1.115 +
1.116 + void dec_stack_after_call (int nof_words) {
1.117 + _rsp_offset -= nof_words;
1.118 + assert(_rsp_offset >= 0, "stack offset underflow");
1.119 + }
1.120 +
1.121 + void invalidate_registers(bool inv_rax, bool inv_rbx, bool inv_rcx, bool inv_rdx, bool inv_rsi, bool inv_rdi) PRODUCT_RETURN;
1.122 +
1.123 +#endif // CPU_X86_VM_C1_MACROASSEMBLER_X86_HPP
