--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/cpu/x86/c1_MacroAssembler_x86.hpp Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,124 @@
+/*
+ * Copyright (c) 1999, 2015, 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_C1_MACROASSEMBLER_X86_HPP
+#define CPU_X86_VM_C1_MACROASSEMBLER_X86_HPP
+
+// 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
+ bool is_tlab_allocated // the object was allocated in a TLAB; relevant for the implementation of ZeroTLAB
+ );
+
+ // 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++; push(i); }
+ void push_oop (jobject o) { _rsp_offset++; pushoop(o); }
+ // Seems to always be in wordSize
+ void push_addr (Address a) { _rsp_offset++; pushptr(a); }
+ void push_reg (Register r) { _rsp_offset++; push(r); }
+ void pop_reg (Register r) { _rsp_offset--; pop(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");
+ addptr(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;
+
+ // This platform only uses signal-based null checks. The Label is not needed.
+ void null_check(Register r, Label *Lnull = NULL) { MacroAssembler::null_check(r); }
+
+#endif // CPU_X86_VM_C1_MACROASSEMBLER_X86_HPP