Mercurial > hg > truffle
annotate src/share/vm/asm/assembler.inline.hpp @ 1721:413ad0331a0c
6977924: Changes for 6975078 produce build error with certain gcc versions
Summary: The changes introduced for 6975078 assign badHeapOopVal to the _allocation field in the ResourceObj class. In 32 bit linux builds with certain versions of gcc this assignment will be flagged as an error while compiling allocation.cpp. In 32 bit builds the constant value badHeapOopVal (which is cast to an intptr_t) is negative. The _allocation field is typed as an unsigned intptr_t and gcc catches this as an error.
Reviewed-by: jcoomes, ysr, phh
| author | johnc |
|---|---|
| date | Wed, 18 Aug 2010 10:59:06 -0700 |
| parents | c18cbe5936b8 |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved. |
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| 13 * accompanied this code). | |
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| 15 * You should have received a copy of the GNU General Public License version | |
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| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 inline void AbstractAssembler::sync() { | |
| 26 CodeSection* cs = code_section(); | |
| 27 guarantee(cs->start() == _code_begin, "must not shift code buffer"); | |
| 28 cs->set_end(_code_pos); | |
| 29 } | |
| 30 | |
| 31 inline void AbstractAssembler::emit_byte(int x) { | |
| 32 assert(isByte(x), "not a byte"); | |
| 33 *(unsigned char*)_code_pos = (unsigned char)x; | |
| 34 _code_pos += sizeof(unsigned char); | |
| 35 sync(); | |
| 36 } | |
| 37 | |
| 38 | |
| 39 inline void AbstractAssembler::emit_word(int x) { | |
| 40 *(short*)_code_pos = (short)x; | |
| 41 _code_pos += sizeof(short); | |
| 42 sync(); | |
| 43 } | |
| 44 | |
| 45 | |
| 46 inline void AbstractAssembler::emit_long(jint x) { | |
| 47 *(jint*)_code_pos = x; | |
| 48 _code_pos += sizeof(jint); | |
| 49 sync(); | |
| 50 } | |
| 51 | |
| 52 inline void AbstractAssembler::emit_address(address x) { | |
| 53 *(address*)_code_pos = x; | |
| 54 _code_pos += sizeof(address); | |
| 55 sync(); | |
| 56 } | |
| 57 | |
| 58 inline address AbstractAssembler::inst_mark() const { | |
| 59 return code_section()->mark(); | |
| 60 } | |
| 61 | |
| 62 | |
| 63 inline void AbstractAssembler::set_inst_mark() { | |
| 64 code_section()->set_mark(); | |
| 65 } | |
| 66 | |
| 67 | |
| 68 inline void AbstractAssembler::clear_inst_mark() { | |
| 69 code_section()->clear_mark(); | |
| 70 } | |
| 71 | |
| 72 | |
| 73 inline void AbstractAssembler::relocate(RelocationHolder const& rspec, int format) { | |
| 74 assert(!pd_check_instruction_mark() | |
| 75 || inst_mark() == NULL || inst_mark() == _code_pos, | |
| 76 "call relocate() between instructions"); | |
| 77 code_section()->relocate(_code_pos, rspec, format); | |
| 78 } | |
| 79 | |
| 80 | |
| 81 inline CodeBuffer* AbstractAssembler::code() const { | |
| 82 return code_section()->outer(); | |
| 83 } | |
| 84 | |
| 85 inline int AbstractAssembler::sect() const { | |
| 86 return code_section()->index(); | |
| 87 } | |
| 88 | |
| 89 inline int AbstractAssembler::locator() const { | |
| 90 return CodeBuffer::locator(offset(), sect()); | |
| 91 } | |
| 92 | |
| 93 inline address AbstractAssembler::target(Label& L) { | |
| 94 return code_section()->target(L, pc()); | |
| 95 } | |
| 96 | |
| 97 inline int Label::loc_pos() const { | |
| 98 return CodeBuffer::locator_pos(loc()); | |
| 99 } | |
| 100 | |
| 101 inline int Label::loc_sect() const { | |
| 102 return CodeBuffer::locator_sect(loc()); | |
| 103 } | |
| 104 | |
| 105 inline void Label::bind_loc(int pos, int sect) { | |
| 106 bind_loc(CodeBuffer::locator(pos, sect)); | |
| 107 } | |
| 108 | |
| 109 address AbstractAssembler::address_constant(Label& L) { | |
| 110 address c = NULL; | |
| 111 address ptr = start_a_const(sizeof(c), sizeof(c)); | |
| 112 if (ptr != NULL) { | |
| 113 relocate(Relocation::spec_simple(relocInfo::internal_word_type)); | |
| 114 *(address*)ptr = c = code_section()->target(L, ptr); | |
| 115 _code_pos = ptr + sizeof(c); | |
| 116 end_a_const(); | |
| 117 } | |
| 118 return ptr; | |
| 119 } | |
| 120 | |
| 121 address AbstractAssembler::address_table_constant(GrowableArray<Label*> labels) { | |
| 122 int addressSize = sizeof(address); | |
| 123 int sizeLabel = addressSize * labels.length(); | |
| 124 address ptr = start_a_const(sizeLabel, addressSize); | |
| 125 | |
| 126 if (ptr != NULL) { | |
| 127 address *labelLoc = (address*)ptr; | |
| 128 for (int i=0; i < labels.length(); i++) { | |
| 129 emit_address(code_section()->target(*labels.at(i), (address)&labelLoc[i])); | |
| 130 code_section()->relocate((address)&labelLoc[i], relocInfo::internal_word_type); | |
| 131 } | |
| 132 end_a_const(); | |
| 133 } | |
| 134 return ptr; | |
| 135 } |