Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/asm/sparc/JmplDecoder.java @ 1602:136b78722a08
6939203: JSR 292 needs method handle constants
Summary: Add new CP types CONSTANT_MethodHandle, CONSTANT_MethodType; extend 'ldc' bytecode.
Reviewed-by: twisti, never
author | jrose |
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date | Wed, 09 Jun 2010 18:50:45 -0700 |
parents | c18cbe5936b8 |
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rev | line source |
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0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.asm.sparc; | |
26 | |
27 import sun.jvm.hotspot.asm.*; | |
28 | |
29 class JmplDecoder extends MemoryInstructionDecoder { | |
30 JmplDecoder() { | |
31 super(JMPL, "jmpl", RTLDT_UNSIGNED_WORD); | |
32 } | |
33 | |
34 Instruction decodeMemoryInstruction(int instruction, SPARCRegisterIndirectAddress addr, | |
35 SPARCRegister rd, SPARCInstructionFactory factory) { | |
36 // this may be most probably indirect call or ret or retl | |
37 Instruction instr = null; | |
38 if (rd == SPARCRegisters.O7) { | |
39 instr = factory.newIndirectCallInstruction(addr, rd); | |
40 } else if (rd == SPARCRegisters.G0) { | |
41 int disp = (int) addr.getDisplacement(); | |
42 Register base = addr.getBase(); | |
43 if (base == SPARCRegisters.I7 && disp == 8) { | |
44 instr = factory.newReturnInstruction(addr, rd, false /* not leaf */); | |
45 } else if (base == SPARCRegisters.O7 && disp == 8) { | |
46 instr = factory.newReturnInstruction(addr, rd, true /* leaf */); | |
47 } else { | |
48 instr = factory.newJmplInstruction(addr, rd); | |
49 } | |
50 } else { | |
51 instr = factory.newJmplInstruction(addr, rd); | |
52 } | |
53 return instr; | |
54 } | |
55 } |