Mercurial > hg > truffle
annotate src/os_cpu/linux_x86/vm/assembler_linux_x86_64.cpp @ 196:d1605aabd0a1 jdk7-b30
6719955: Update copyright year
Summary: Update copyright year for files that have been modified in 2008
Reviewed-by: ohair, tbell
| author | xdono |
|---|---|
| date | Wed, 02 Jul 2008 12:55:16 -0700 |
| parents | 7793bd37a336 |
| children | 1fdb98a17101 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 196 | 2 * Copyright 2003-2008 Sun Microsystems, Inc. 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #include "incls/_precompiled.incl" | |
| 26 #include "incls/_assembler_linux_x86_64.cpp.incl" | |
| 27 | |
| 28 void MacroAssembler::int3() { | |
| 29 call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint))); | |
| 30 } | |
| 31 | |
| 32 void MacroAssembler::get_thread(Register thread) { | |
| 33 // call pthread_getspecific | |
| 34 // void * pthread_getspecific(pthread_key_t key); | |
| 35 if (thread != rax) { | |
| 36 pushq(rax); | |
| 37 } | |
| 38 pushq(rdi); | |
| 39 pushq(rsi); | |
| 40 pushq(rdx); | |
| 41 pushq(rcx); | |
| 42 pushq(r8); | |
| 43 pushq(r9); | |
| 44 pushq(r10); | |
| 45 // XXX | |
| 46 movq(r10, rsp); | |
| 47 andq(rsp, -16); | |
| 48 pushq(r10); | |
| 49 pushq(r11); | |
| 50 | |
| 51 movl(rdi, ThreadLocalStorage::thread_index()); | |
| 52 call(RuntimeAddress(CAST_FROM_FN_PTR(address, pthread_getspecific))); | |
| 53 | |
| 54 popq(r11); | |
| 55 popq(rsp); | |
| 56 popq(r10); | |
| 57 popq(r9); | |
| 58 popq(r8); | |
| 59 popq(rcx); | |
| 60 popq(rdx); | |
| 61 popq(rsi); | |
| 62 popq(rdi); | |
| 63 if (thread != rax) { | |
| 64 movq(thread, rax); | |
| 65 popq(rax); | |
| 66 } | |
| 67 } | |
| 68 | |
|
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6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
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69 bool MacroAssembler::needs_explicit_null_check(intptr_t offset) { |
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70 // Exception handler checks the nmethod's implicit null checks table |
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71 // only when this method returns false. |
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72 if (UseCompressedOops) { |
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73 // The first page after heap_base is unmapped and |
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74 // the 'offset' is equal to [heap_base + offset] for |
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7793bd37a336
6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
kvn
parents:
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75 // narrow oop implicit null checks. |
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76 uintptr_t heap_base = (uintptr_t)Universe::heap_base(); |
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77 if ((uintptr_t)offset >= heap_base) { |
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7793bd37a336
6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
kvn
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78 // Normalize offset for the next check. |
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79 offset = (intptr_t)(pointer_delta((void*)offset, (void*)heap_base, 1)); |
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kvn
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80 } |
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kvn
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81 } |
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7793bd37a336
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kvn
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82 // Linux kernel guarantees that the first page is always unmapped. Don't |
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7793bd37a336
6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
kvn
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83 // assume anything more than that. |
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7793bd37a336
6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
kvn
parents:
0
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84 bool offset_in_first_page = 0 <= offset && offset < os::vm_page_size(); |
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7793bd37a336
6705887: Compressed Oops: generate x64 addressing and implicit null checks with narrow oops
kvn
parents:
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85 return !offset_in_first_page; |
| 0 | 86 } |