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| 1 // Copyright 2009 The Go Authors. All rights reserved. | 1 // Copyright 2009 The Go Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style | 2 // Use of this source code is governed by a BSD-style |
| 3 // license that can be found in the LICENSE file. | 3 // license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 // | 5 // |
| 6 // System calls and other sys.stuff for AMD64, Linux | 6 // System calls and other sys.stuff for AMD64, Linux |
| 7 // | 7 // |
| 8 | 8 |
| 9 #include "amd64/asm.h" | 9 #include "amd64/asm.h" |
| 10 | 10 |
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| 86 RET | 86 RET |
| 87 | 87 |
| 88 TEXT runtime·mincore(SB),7,$0-24 | 88 TEXT runtime·mincore(SB),7,$0-24 |
| 89 MOVQ 8(SP), DI | 89 MOVQ 8(SP), DI |
| 90 MOVQ 16(SP), SI | 90 MOVQ 16(SP), SI |
| 91 MOVQ 24(SP), DX | 91 MOVQ 24(SP), DX |
| 92 MOVL $27, AX // syscall entry | 92 MOVL $27, AX // syscall entry |
| 93 SYSCALL | 93 SYSCALL |
| 94 RET | 94 RET |
| 95 | 95 |
| 96 // func now() (sec int64, nsec int32) |
| 97 TEXT time·now(SB), 7, $32 |
| 98 LEAQ 8(SP), DI |
| 99 MOVQ $0, SI |
| 100 MOVQ $0xffffffffff600000, AX |
| 101 CALL AX |
| 102 MOVQ 8(SP), AX // sec |
| 103 MOVL 16(SP), DX // usec |
| 104 |
| 105 // sec is in AX, usec in DX |
| 106 MOVQ AX, sec+0(FP) |
| 107 IMULQ $1000, DX |
| 108 MOVL DX, nsec+8(FP) |
| 109 RET |
| 110 |
| 96 TEXT runtime·nanotime(SB), 7, $32 | 111 TEXT runtime·nanotime(SB), 7, $32 |
| 97 LEAQ 8(SP), DI | 112 LEAQ 8(SP), DI |
| 98 MOVQ $0, SI | 113 MOVQ $0, SI |
| 99 MOVQ $0xffffffffff600000, AX | 114 MOVQ $0xffffffffff600000, AX |
| 100 CALL AX | 115 CALL AX |
| 101 MOVQ 8(SP), AX // sec | 116 MOVQ 8(SP), AX // sec |
| 102 MOVL 16(SP), DX // usec | 117 MOVL 16(SP), DX // usec |
| 103 | 118 |
| 104 // sec is in AX, usec in DX | 119 // sec is in AX, usec in DX |
| 105 // return nsec in AX | 120 // return nsec in AX |
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| 261 SYSCALL | 276 SYSCALL |
| 262 CMPQ AX, $0xfffffffffffff001 | 277 CMPQ AX, $0xfffffffffffff001 |
| 263 JLS 2(PC) | 278 JLS 2(PC) |
| 264 CALL runtime·notok(SB) | 279 CALL runtime·notok(SB) |
| 265 RET | 280 RET |
| 266 | 281 |
| 267 TEXT runtime·osyield(SB),7,$0 | 282 TEXT runtime·osyield(SB),7,$0 |
| 268 MOVL $24, AX | 283 MOVL $24, AX |
| 269 SYSCALL | 284 SYSCALL |
| 270 RET | 285 RET |
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