author | herrick |
Thu, 17 Oct 2019 07:55:35 -0400 | |
branch | JDK-8200758-branch |
changeset 58670 | 6fb9e12d5595 |
parent 57777 | 90ead0febf56 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved. |
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* Copyright (c) 2016 SAP SE. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#ifndef CPU_S390_C1_MACROASSEMBLER_S390_HPP |
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#define CPU_S390_C1_MACROASSEMBLER_S390_HPP |
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void pd_init() { /* nothing to do */ } |
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public: |
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void try_allocate( |
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Register obj, // result: Pointer to object after successful allocation. |
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Register var_size_in_bytes, // Object size in bytes if unknown at compile time; invalid otherwise. |
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int con_size_in_bytes, // Object size in bytes if known at compile time. |
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Register t1, // temp register |
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Label& slow_case // Continuation point if fast allocation fails. |
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); |
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void initialize_header(Register obj, Register klass, Register len, Register Rzero, Register t1); |
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void initialize_body(Register objectFields, Register len_in_bytes, Register Rzero); |
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// locking |
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// hdr : Used to hold locked markWord to be CASed into obj, contents destroyed. |
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// obj : Must point to the object to lock, contents preserved. |
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// disp_hdr: Must point to the displaced header location, contents preserved. |
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// Returns code offset at which to add null check debug information. |
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void lock_object(Register hdr, Register obj, Register disp_hdr, Label& slow_case); |
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// unlocking |
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// hdr : Used to hold original markWord to be CASed back into obj, contents destroyed. |
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// obj : Must point to the object to lock, contents preserved. |
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// disp_hdr: Must point to the displaced header location, contents destroyed. |
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void unlock_object(Register hdr, Register obj, Register lock, Label& slow_case); |
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void initialize_object( |
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Register obj, // result: Pointer to object after successful allocation. |
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Register klass, // object klass |
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Register var_size_in_bytes, // Object size in bytes if unknown at compile time; invalid otherwise. |
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int con_size_in_bytes, // Object size in bytes if known at compile time. |
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Register t1, // temp register |
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Register t2 // temp register |
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); |
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// Allocation of fixed-size objects. |
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// This can also be used to allocate fixed-size arrays, by setting |
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// hdr_size correctly and storing the array length afterwards. |
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void allocate_object( |
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Register obj, // result: Pointer to object after successful allocation. |
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Register t1, // temp register |
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Register t2, // temp register |
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int hdr_size, // object header size in words |
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int obj_size, // object size in words |
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Register klass, // object klass |
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Label& slow_case // Continuation point if fast allocation fails. |
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); |
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enum { |
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max_array_allocation_length = 0x01000000 // Sparc friendly value, requires sethi only. |
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}; |
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// Allocation of arrays. |
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void allocate_array( |
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Register obj, // result: Pointer to array after successful allocation. |
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Register len, // array length |
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Register t1, // temp register |
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Register t2, // temp register |
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int hdr_size, // object header size in words |
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int elt_size, // element size in bytes |
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Register klass, // object klass |
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Label& slow_case // Continuation point if fast allocation fails. |
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); |
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// Invalidates registers in this window. |
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void invalidate_registers(Register preserve1 = noreg, Register preserve2 = noreg, |
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Register preserve3 = noreg) PRODUCT_RETURN; |
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// This platform only uses signal-based null checks. The Label is not needed. |
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void null_check(Register r, Label *Lnull = NULL) { MacroAssembler::null_check(r); } |
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#endif // CPU_S390_C1_MACROASSEMBLER_S390_HPP |