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runtime: consolidate Windows time constants into single copy

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Change-Id: I1a583d3da9cca4ac51f3fec9b508b7638b452d60
Reviewed-on: https://go-review.googlesource.com/c/go/+/314270
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
This commit is contained in:
Ian Lance Taylor 2021-04-27 10:58:54 -07:00
parent 92c9f3a9b8
commit e51246c881
5 changed files with 20 additions and 40 deletions
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11
src/runtime/sys_windows_386.s
View File

@ -5,6 +5,7 @@
#include "go_asm.h"
#include "go_tls.h"
#include "textflag.h"
#include "time_windows.h"
// void runtime·asmstdcall(void *c);
TEXT runtime·asmstdcall<ABIInternal>(SB),NOSPLIT,$0
@ -331,16 +332,6 @@ TEXT runtime·switchtothread(SB),NOSPLIT,$0
MOVL BP, SP
RET
// See https://wrkhpi.wordpress.com/2007/08/09/getting-os-information-the-kuser_shared_data-structure/
// Archived copy at:
// http://web.archive.org/web/20210411000829/https://wrkhpi.wordpress.com/2007/08/09/getting-os-information-the-kuser_shared_data-structure/
// Must read hi1, then lo, then hi2. The snapshot is valid if hi1 == hi2.
#define _INTERRUPT_TIME 0x7ffe0008
#define _SYSTEM_TIME 0x7ffe0014
#define time_lo 0
#define time_hi1 4
#define time_hi2 8
TEXT runtime·nanotime1(SB),NOSPLIT,$0-8
CMPB runtime·useQPCTime(SB), $0
JNE useQPC

11
src/runtime/sys_windows_amd64.s
View File

@ -5,6 +5,7 @@
#include "go_asm.h"
#include "go_tls.h"
#include "textflag.h"
#include "time_windows.h"
#include "cgo/abi_amd64.h"
// maxargs should be divisible by 2, as Windows stack
@ -341,16 +342,6 @@ TEXT runtime·switchtothread(SB),NOSPLIT|NOFRAME,$0
MOVQ 32(SP), SP
RET
// See https://wrkhpi.wordpress.com/2007/08/09/getting-os-information-the-kuser_shared_data-structure/
// Archived copy at:
// http://web.archive.org/web/20210411000829/https://wrkhpi.wordpress.com/2007/08/09/getting-os-information-the-kuser_shared_data-structure/
// Must read hi1, then lo, then hi2. The snapshot is valid if hi1 == hi2.
#define _INTERRUPT_TIME 0x7ffe0008
#define _SYSTEM_TIME 0x7ffe0014
#define time_lo 0
#define time_hi1 4
#define time_hi2 8
TEXT runtime·nanotime1(SB),NOSPLIT,$0-8
CMPB runtime·useQPCTime(SB), $0
JNE useQPC

11
src/runtime/sys_windows_arm.s
View File

@ -5,6 +5,7 @@
#include "go_asm.h"
#include "go_tls.h"
#include "textflag.h"
#include "time_windows.h"
// Note: For system ABI, R0-R3 are args, R4-R11 are callee-save.
@ -341,16 +342,6 @@ TEXT runtime·read_tls_fallback(SB),NOSPLIT|NOFRAME,$0
MOVW R0, (R0)
RET
// See https://wrkhpi.wordpress.com/2007/08/09/getting-os-information-the-kuser_shared_data-structure/
// Archived copy at:
// http://web.archive.org/web/20210411000829/https://wrkhpi.wordpress.com/2007/08/09/getting-os-information-the-kuser_shared_data-structure/
// Must read hi1, then lo, then hi2. The snapshot is valid if hi1 == hi2.
#define _INTERRUPT_TIME 0x7ffe0008
#define _SYSTEM_TIME 0x7ffe0014
#define time_lo 0
#define time_hi1 4
#define time_hi2 8
TEXT runtime·nanotime1(SB),NOSPLIT|NOFRAME,$0-8
MOVW $0, R0
MOVB runtime·useQPCTime(SB), R0

11
src/runtime/sys_windows_arm64.s
View File

@ -6,6 +6,7 @@
#include "go_tls.h"
#include "textflag.h"
#include "funcdata.h"
#include "time_windows.h"
// Offsets into Thread Environment Block (pointer in R18)
#define TEB_error 0x68
@ -407,16 +408,6 @@ TEXT runtime·switchtothread(SB),NOSPLIT,$16-0
ADD $16, RSP
RET
// See https://wrkhpi.wordpress.com/2007/08/09/getting-os-information-the-kuser_shared_data-structure/
// Archived copy at:
// http://web.archive.org/web/20210411000829/https://wrkhpi.wordpress.com/2007/08/09/getting-os-information-the-kuser_shared_data-structure/
// Must read hi1, then lo, then hi2. The snapshot is valid if hi1 == hi2.
#define _INTERRUPT_TIME 0x7ffe0008
#define _SYSTEM_TIME 0x7ffe0014
#define time_lo 0
#define time_hi1 4
#define time_hi2 8
TEXT runtime·nanotime1(SB),NOSPLIT|NOFRAME,$0-8
MOVB runtime·useQPCTime(SB), R0
CMP $0, R0

16
src/runtime/time_windows.h Normal file
View File

@ -0,0 +1,16 @@
// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Constants for fetching time values on Windows for use in asm code.
// See https://wrkhpi.wordpress.com/2007/08/09/getting-os-information-the-kuser_shared_data-structure/
// Archived copy at:
// http://web.archive.org/web/20210411000829/https://wrkhpi.wordpress.com/2007/08/09/getting-os-information-the-kuser_shared_data-structure/
// Must read hi1, then lo, then hi2. The snapshot is valid if hi1 == hi2.
#define _INTERRUPT_TIME 0x7ffe0008
#define _SYSTEM_TIME 0x7ffe0014
#define time_lo 0
#define time_hi1 4
#define time_hi2 8