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runtime: support register ABI Go functions from Windows callbacks

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This change modifies the system that allows Go functions to be set as
callbacks in various Windows systems to support the new register ABI.

For #40724.

Change-Id: Ie067f9e8a76c96d56177d7aa88f89cbe7223e12e
Reviewed-on: https://go-review.googlesource.com/c/go/+/300113
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Trust: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
This commit is contained in:
Michael Anthony Knyszek 2021-03-09 21:13:34 +00:00 • committed by Michael Knyszek
parent cb42e3e979
commit 44dd06670f
3 changed files with 306 additions and 82 deletions
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4
src/runtime/export_test.go
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@ -1233,7 +1233,9 @@ func (th *TimeHistogram) Record(duration int64) {
func SetIntArgRegs(a int) int {
lock(&finlock)
old := intArgRegs
intArgRegs = a
if a >= 0 {
intArgRegs = a
}
unlock(&finlock)
return old
}