Mercurial > hg > graal-jvmci-8
comparison src/cpu/x86/vm/interpreter_x86.hpp @ 1506:2338d41fbd81
6943304: remove tagged stack interpreter
Reviewed-by: coleenp, never, gbenson
author | twisti |
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date | Fri, 30 Apr 2010 08:37:24 -0700 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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1505:0c5b3cf3c1f5 | 1506:2338d41fbd81 |
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1 /* | 1 /* |
2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. | 2 * Copyright 1997-2010 Sun Microsystems, Inc. All Rights Reserved. |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | 4 * |
5 * This code is free software; you can redistribute it and/or modify it | 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 | 6 * under the terms of the GNU General Public License version 2 only, as |
7 * published by the Free Software Foundation. | 7 * published by the Free Software Foundation. |
29 // return address and convert the return to a specialized | 29 // return address and convert the return to a specialized |
30 // block of code to handle compiedl return values and cleaning | 30 // block of code to handle compiedl return values and cleaning |
31 // the fpu stack. | 31 // the fpu stack. |
32 static const int return_sentinel; | 32 static const int return_sentinel; |
33 | 33 |
34 | 34 static Address::ScaleFactor stackElementScale() { return Address::times_4; } |
35 static Address::ScaleFactor stackElementScale() { | |
36 return TaggedStackInterpreter? Address::times_8 : Address::times_4; | |
37 } | |
38 | 35 |
39 // Offset from rsp (which points to the last stack element) | 36 // Offset from rsp (which points to the last stack element) |
40 static int expr_offset_in_bytes(int i) { return stackElementSize()*i ; } | 37 static int expr_offset_in_bytes(int i) { return stackElementSize * i; } |
41 static int expr_tag_offset_in_bytes(int i) { | |
42 assert(TaggedStackInterpreter, "should not call this"); | |
43 return expr_offset_in_bytes(i) + wordSize; | |
44 } | |
45 | |
46 // Support for Tagged Stacks | |
47 | 38 |
48 // Stack index relative to tos (which points at value) | 39 // Stack index relative to tos (which points at value) |
49 static int expr_index_at(int i) { | 40 static int expr_index_at(int i) { return stackElementWords * i; } |
50 return stackElementWords() * i; | |
51 } | |
52 | |
53 static int expr_tag_index_at(int i) { | |
54 assert(TaggedStackInterpreter, "should not call this"); | |
55 // tag is one word above java stack element | |
56 return stackElementWords() * i + 1; | |
57 } | |
58 | 41 |
59 // Already negated by c++ interpreter | 42 // Already negated by c++ interpreter |
60 static int local_index_at(int i) { | 43 static int local_index_at(int i) { |
61 assert(i<=0, "local direction already negated"); | 44 assert(i <= 0, "local direction already negated"); |
62 return stackElementWords() * i + (value_offset_in_bytes()/wordSize); | 45 return stackElementWords * i; |
63 } | 46 } |
64 | |
65 static int local_tag_index_at(int i) { | |
66 assert(i<=0, "local direction already negated"); | |
67 assert(TaggedStackInterpreter, "should not call this"); | |
68 return stackElementWords() * i + (tag_offset_in_bytes()/wordSize); | |
69 } |