| // Copyright 2021 The LUCI Authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| //+build darwin,amd64,go1.16 |
| |
| #include "textflag.h" |
| |
| TEXT libc_clock_gettime(SB),NOSPLIT,$0-0 |
| PUSHQ BP |
| MOVQ SP, BP |
| MOVQ SI, BX |
| MOVQ SI, DI // arg 1: *timeval |
| XORQ SI, SI // arg 2: *timezone (nil) |
| CALL libc_gettimeofday(SB) |
| |
| // hacky: usec to nsec |
| // clock_gettime expects timespec, which is { sec int64; nsec int64 } |
| // gettimeofday expects timeval, which is { sec int64; usec int32 } |
| MOVL 8(BX), AX |
| IMULQ $1000, AX |
| MOVQ AX, 8(BX) |
| |
| POPQ BP |
| RET |
