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| 1 ;; Copyright (C) 2013 Google Inc. All rights reserved. | |
| 2 ;; | |
| 3 ;; Redistribution and use in source and binary forms, with or without | |
| 4 ;; modification, are permitted provided that the following conditions are | |
| 5 ;; met: | |
| 6 ;; | |
| 7 ;; * Redistributions of source code must retain the above copyright | |
| 8 ;; notice, this list of conditions and the following disclaimer. | |
| 9 ;; * Redistributions in binary form must reproduce the above | |
| 10 ;; copyright notice, this list of conditions and the following disclaimer | |
| 11 ;; in the documentation and/or other materials provided with the | |
| 12 ;; distribution. | |
| 13 ;; * Neither the name of Google Inc. nor the names of its | |
| 14 ;; contributors may be used to endorse or promote products derived from | |
| 15 ;; this software without specific prior written permission. | |
| 16 ;; | |
| 17 ;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 18 ;; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 19 ;; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 20 ;; A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 21 ;; OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 22 ;; SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 23 ;; LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 24 ;; DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 25 ;; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 26 ;; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 27 ;; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 28 ;; | |
| 29 | |
| 30 %ifndef X64POSIX | |
| 31 %define X64POSIX 0 | |
| 32 %endif | |
| 33 | |
| 34 %ifndef X64WIN | |
| 35 %define X64WIN 0 | |
| 36 %endif | |
| 37 | |
| 38 %ifndef IA32 | |
| 39 %define IA32 0 | |
| 40 %endif | |
| 41 | |
| 42 %ifndef ARM | |
| 43 %define ARM 0 | |
| 44 %endif | |
| 45 | |
| 46 ;; Prefix symbols by '_' if PREFIX is defined. | |
| 47 %ifdef PREFIX | |
| 48 %define mangle(x) _ %+ x | |
| 49 %else | |
| 50 %define mangle(x) x | |
| 51 %endif | |
| 52 | |
| 53 | |
| 54 ; PRIVATE makes a symbol private. | |
| 55 %ifidn __OUTPUT_FORMAT__,elf32 | |
| 56 %define PRIVATE :hidden | |
| 57 %elifidn __OUTPUT_FORMAT__,elf64 | |
| 58 %define PRIVATE :hidden | |
| 59 %elifidn __OUTPUT_FORMAT__,elfx32 | |
| 60 %define PRIVATE :hidden | |
| 61 %elif X64WIN | |
| 62 %define PRIVATE | |
| 63 %else | |
| 64 %define PRIVATE :private_extern | |
| 65 %endif | |
| 66 | |
| 67 ;; typedef void (*PushAllRegistersCallback)(SafePointBarrier*, ThreadState*, int
ptr_t*); | |
| 68 ;; extern "C" void pushAllRegisters(SafePointBarrier*, ThreadState*, PushAllRegi
stersCallback) | |
| 69 | |
| 70 global mangle(pushAllRegisters) PRIVATE | |
| 71 | |
| 72 %if X64POSIX | |
| 73 | |
| 74 mangle(pushAllRegisters): | |
| 75 ;; Push all callee-saves registers to get them | |
| 76 ;; on the stack for conservative stack scanning. | |
| 77 ;; We maintain 16-byte alignment at calls (required on Mac). | |
| 78 ;; There is an 8-byte return address on the stack and we push | |
| 79 ;; 56 bytes which maintains 16-byte stack alignment | |
| 80 ;; at the call. | |
| 81 push 0 | |
| 82 push rbx | |
| 83 push rbp | |
| 84 push r12 | |
| 85 push r13 | |
| 86 push r14 | |
| 87 push r15 | |
| 88 ;; Pass the two first arguments unchanged (rdi, rsi) | |
| 89 ;; and the stack pointer after pushing callee-saved | |
| 90 ;; registers to the callback. | |
| 91 mov r8, rdx | |
| 92 mov rdx, rsp | |
| 93 call r8 | |
| 94 ;; Pop the callee-saved registers. None of them were | |
| 95 ;; modified so no restoring is needed. | |
| 96 add rsp, 56 | |
| 97 ret | |
| 98 | |
| 99 %elif X64WIN | |
| 100 | |
| 101 mangle(pushAllRegisters): | |
| 102 ;; Push all callee-saves registers to get them | |
| 103 ;; on the stack for conservative stack scanning. | |
| 104 push rsi | |
| 105 push rdi | |
| 106 push rbx | |
| 107 push rbp | |
| 108 push r12 | |
| 109 push r13 | |
| 110 push r14 | |
| 111 push r15 | |
| 112 ;; Pass the two first arguments unchanged (rcx, rdx) | |
| 113 ;; and the stack pointer after pushing callee-saved | |
| 114 ;; registers to the callback. | |
| 115 mov r9, r8 | |
| 116 mov r8, rsp | |
| 117 call r9 | |
| 118 ;; Pop the callee-saved registers. None of them were | |
| 119 ;; modified so no restoring is needed. | |
| 120 add rsp, 64 | |
| 121 ret | |
| 122 | |
| 123 %elif IA32 | |
| 124 | |
| 125 mangle(pushAllRegisters): | |
| 126 ;; Push all callee-saves registers to get them | |
| 127 ;; on the stack for conservative stack scanning. | |
| 128 ;; We maintain 16-byte alignment at calls (required on | |
| 129 ;; Mac). There is a 4-byte return address on the stack | |
| 130 ;; and we push 28 bytes which maintains 16-byte alignment | |
| 131 ;; at the call. | |
| 132 push ebx | |
| 133 push ebp | |
| 134 push esi | |
| 135 push edi | |
| 136 ;; Pass the two first arguments unchanged and the | |
| 137 ;; stack pointer after pushing callee-save registers | |
| 138 ;; to the callback. | |
| 139 mov ecx, [esp + 28] | |
| 140 push esp | |
| 141 push dword [esp + 28] | |
| 142 push dword [esp + 28] | |
| 143 call ecx | |
| 144 ;; Pop arguments and the callee-saved registers. | |
| 145 ;; None of the callee-saved registers were modified | |
| 146 ;; so we do not need to restore them. | |
| 147 add esp, 28 | |
| 148 ret | |
| 149 | |
| 150 | |
| 151 %elif ARM | |
| 152 %error "Yasm does not support arm. Use SaveRegisters_arm.S on arm." | |
| 153 %else | |
| 154 %error "Unsupported platform." | |
| 155 %endif | |
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Chromium Code Reviews
Issue 686783002:
Remove almost all of Oilpan (Closed)
Base URL: git@github.com:domokit/mojo.git@master