| /* |
| * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
| * Copyright (c) 2016 SAP SE. 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_S390_VM_C1_MACROASSEMBLER_S390_HPP |
| #define CPU_S390_VM_C1_MACROASSEMBLER_S390_HPP |
| |
| void pd_init() { /* nothing to do */ } |
| |
| 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 |
| Label& slow_case // Continuation point if fast allocation fails. |
| ); |
| |
| void initialize_header(Register obj, Register klass, Register len, Register Rzero, Register t1); |
| void initialize_body(Register objectFields, Register len_in_bytes, Register Rzero); |
| |
| // locking |
| // hdr : Used to hold locked markOop to be CASed into obj, contents destroyed. |
| // obj : Must point to the object to lock, contents preserved. |
| // disp_hdr: Must point to the displaced header location, contents preserved. |
| // Returns code offset at which to add null check debug information. |
| void lock_object(Register hdr, Register obj, Register disp_hdr, Label& slow_case); |
| |
| // unlocking |
| // hdr : Used to hold original markOop to be CASed back into obj, contents destroyed. |
| // obj : Must point to the object to lock, contents preserved. |
| // disp_hdr: Must point to the displaced header location, contents destroyed. |
| void unlock_object(Register hdr, 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. |
| // This can also be used to allocate fixed-size arrays, by setting |
| // hdr_size correctly and storing the array length afterwards. |
| void allocate_object( |
| Register obj, // result: Pointer to object after successful allocation. |
| Register t1, // temp register |
| Register t2, // temp register |
| int hdr_size, // object header size in words |
| int obj_size, // object size in words |
| Register klass, // object klass |
| Label& slow_case // Continuation point if fast allocation fails. |
| ); |
| |
| enum { |
| max_array_allocation_length = 0x01000000 // Sparc friendly value, requires sethi only. |
| }; |
| |
| // Allocation of arrays. |
| void allocate_array( |
| Register obj, // result: Pointer to array after successful allocation. |
| Register len, // array length |
| Register t1, // temp register |
| Register t2, // temp register |
| int hdr_size, // object header size in words |
| int elt_size, // element size in bytes |
| Register klass, // object klass |
| Label& slow_case // Continuation point if fast allocation fails. |
| ); |
| |
| // Invalidates registers in this window. |
| void invalidate_registers(Register preserve1 = noreg, Register preserve2 = noreg, |
| Register preserve3 = noreg) PRODUCT_RETURN; |
| |
| void nop() { z_nop(); } |
| |
| // 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_S390_VM_C1_MACROASSEMBLER_S390_HPP |