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comparison src/share/vm/code/location.cpp @ 331:cecd8eb4e0ca

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6706829: Compressed Oops: add debug info for narrow oops Summary: Add support for narrow oops in debug info to avoid decoding. Reviewed-by: rasbold, never
author kvn
date Wed, 10 Sep 2008 18:23:32 -0700
parents a61af66fc99e
children c18cbe5936b8
comparison
equal deleted inserted replaced
330:1c6e3bfb543a 331:cecd8eb4e0ca
1 /* 1 /*
2 * Copyright 1997-2006 Sun Microsystems, Inc. All Rights Reserved. 2 * Copyright 1997-2008 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.
24 24
25 #include "incls/_precompiled.incl" 25 #include "incls/_precompiled.incl"
26 #include "incls/_location.cpp.incl" 26 #include "incls/_location.cpp.incl"
27 27
28 void Location::print_on(outputStream* st) const { 28 void Location::print_on(outputStream* st) const {
29 if(type() == invalid && !legal_offset_in_bytes(offset() * BytesPerInt)) { 29 if(type() == invalid) {
30 // product of Location::invalid_loc() or Location::Location(). 30 // product of Location::invalid_loc() or Location::Location().
31 switch (where()) { 31 switch (where()) {
32 case on_stack: st->print("empty"); break; 32 case on_stack: st->print("empty"); break;
33 case in_register: st->print("invalid"); break; 33 case in_register: st->print("invalid"); break;
34 } 34 }
40 default: st->print("Wrong location where %d", where()); 40 default: st->print("Wrong location where %d", where());
41 } 41 }
42 switch (type()) { 42 switch (type()) {
43 case normal: break; 43 case normal: break;
44 case oop: st->print(",oop"); break; 44 case oop: st->print(",oop"); break;
45 case narrowoop: st->print(",narrowoop"); break;
45 case int_in_long: st->print(",int"); break; 46 case int_in_long: st->print(",int"); break;
46 case lng: st->print(",long"); break; 47 case lng: st->print(",long"); break;
47 case float_in_dbl: st->print(",float"); break; 48 case float_in_dbl: st->print(",float"); break;
48 case dbl: st->print(",double"); break; 49 case dbl: st->print(",double"); break;
49 case addr: st->print(",address"); break; 50 case addr: st->print(",address"); break;
51 } 52 }
52 } 53 }
53 54
54 55
55 Location::Location(DebugInfoReadStream* stream) { 56 Location::Location(DebugInfoReadStream* stream) {
56 _value = (uint16_t) stream->read_int(); 57 _value = (juint) stream->read_int();
57 } 58 }
58 59
59 60
60 void Location::write_on(DebugInfoWriteStream* stream) { 61 void Location::write_on(DebugInfoWriteStream* stream) {
61 stream->write_int(_value & 0x0000FFFF); 62 stream->write_int(_value);
62 } 63 }
63 64
64 65
65 // Valid argument to Location::new_stk_loc()? 66 // Valid argument to Location::new_stk_loc()?
66 bool Location::legal_offset_in_bytes(int offset_in_bytes) { 67 bool Location::legal_offset_in_bytes(int offset_in_bytes) {
67 if ((offset_in_bytes % BytesPerInt) != 0) return false; 68 if ((offset_in_bytes % BytesPerInt) != 0) return false;
68 return (offset_in_bytes / BytesPerInt) < (OFFSET_MASK >> OFFSET_SHIFT); 69 return (juint)(offset_in_bytes / BytesPerInt) < (OFFSET_MASK >> OFFSET_SHIFT);
69 } 70 }