Goetz Lindenmaier | a4cfffa | 2016-10-13 14:49:34 +0200 | [diff] [blame] | 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 | |
| 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 | void nop() { z_nop(); } |
| 99 | |
| 100 | // This platform only uses signal-based null checks. The Label is not needed. |
| 101 | void null_check(Register r, Label *Lnull = NULL) { MacroAssembler::null_check(r); } |
| 102 | |
| 103 | #endif // CPU_S390_VM_C1_MACROASSEMBLER_S390_HPP |