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runtime: fix usleep on windows/arm

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Changed calling convention to pre-multiply the argument by -100,
and then deleted the * 100 but not the negation in the windows/arm assembly.
Delete the negation.

Fixes the current all.bash breakage on windows/arm builder.
(Maybe that will uncover more.)

Change-Id: I13006a44866ecc007586deb180a49c038d70aa99
Reviewed-on: https://go-review.googlesource.com/c/go/+/295529
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
This commit is contained in:
Russ Cox 2021-02-23 11:38:24 -05:00
parent 74cac8d479
commit 080119799b
1 changed files with 1 additions and 2 deletions
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3
src/runtime/sys_windows_arm.s
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@ -375,12 +375,11 @@ TEXT runtime·tstart_stdcall(SB),NOSPLIT|NOFRAME,$0
// duration (in -100ns units) is in dt+0(FP).
// g may be nil.
TEXT runtime·usleep2(SB),NOSPLIT|NOFRAME,$0-4
MOVW dt+0(FP), R0
MOVW dt+0(FP), R3
MOVM.DB.W [R4, R14], (R13) // push {r4, lr}
MOVW R13, R4 // Save SP
SUB $8, R13 // R13 = R13 - 8
BIC $0x7, R13 // Align SP for ABI
RSB $0, R0, R3 // R3 = -R0
MOVW $0, R1 // R1 = FALSE (alertable)
MOVW $-1, R0 // R0 = handle
MOVW R13, R2 // R2 = pTime