1 /* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2016 SAP SE. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #ifndef CPU_S390_VM_C1_MACROASSEMBLER_S390_HPP 27 #define CPU_S390_VM_C1_MACROASSEMBLER_S390_HPP 28 pd_init()29 void pd_init() { /* nothing to do */ } 30 31 public: 32 void try_allocate( 33 Register obj, // result: Pointer to object after successful allocation. 34 Register var_size_in_bytes, // Object size in bytes if unknown at compile time; invalid otherwise. 35 int con_size_in_bytes, // Object size in bytes if known at compile time. 36 Register t1, // temp register 37 Label& slow_case // Continuation point if fast allocation fails. 38 ); 39 40 void initialize_header(Register obj, Register klass, Register len, Register Rzero, Register t1); 41 void initialize_body(Register objectFields, Register len_in_bytes, Register Rzero); 42 43 // locking 44 // hdr : Used to hold locked markOop to be CASed into obj, contents destroyed. 45 // obj : Must point to the object to lock, contents preserved. 46 // disp_hdr: Must point to the displaced header location, contents preserved. 47 // Returns code offset at which to add null check debug information. 48 void lock_object(Register hdr, Register obj, Register disp_hdr, Label& slow_case); 49 50 // unlocking 51 // hdr : Used to hold original markOop to be CASed back into obj, contents destroyed. 52 // obj : Must point to the object to lock, contents preserved. 53 // disp_hdr: Must point to the displaced header location, contents destroyed. 54 void unlock_object(Register hdr, Register obj, Register lock, Label& slow_case); 55 56 void initialize_object( 57 Register obj, // result: Pointer to object after successful allocation. 58 Register klass, // object klass 59 Register var_size_in_bytes, // Object size in bytes if unknown at compile time; invalid otherwise. 60 int con_size_in_bytes, // Object size in bytes if known at compile time. 61 Register t1, // temp register 62 Register t2 // temp register 63 ); 64 65 // Allocation of fixed-size objects. 66 // This can also be used to allocate fixed-size arrays, by setting 67 // hdr_size correctly and storing the array length afterwards. 68 void allocate_object( 69 Register obj, // result: Pointer to object after successful allocation. 70 Register t1, // temp register 71 Register t2, // temp register 72 int hdr_size, // object header size in words 73 int obj_size, // object size in words 74 Register klass, // object klass 75 Label& slow_case // Continuation point if fast allocation fails. 76 ); 77 78 enum { 79 max_array_allocation_length = 0x01000000 // Sparc friendly value, requires sethi only. 80 }; 81 82 // Allocation of arrays. 83 void allocate_array( 84 Register obj, // result: Pointer to array after successful allocation. 85 Register len, // array length 86 Register t1, // temp register 87 Register t2, // temp register 88 int hdr_size, // object header size in words 89 int elt_size, // element size in bytes 90 Register klass, // object klass 91 Label& slow_case // Continuation point if fast allocation fails. 92 ); 93 94 // Invalidates registers in this window. 95 void invalidate_registers(Register preserve1 = noreg, Register preserve2 = noreg, 96 Register preserve3 = noreg) PRODUCT_RETURN; 97 98 // This platform only uses signal-based null checks. The Label is not needed. null_check(Register r,Label * Lnull=NULL)99 void null_check(Register r, Label *Lnull = NULL) { MacroAssembler::null_check(r); } 100 101 #endif // CPU_S390_VM_C1_MACROASSEMBLER_S390_HPP 102