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all: add GOOS=ios

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Introduce GOOS=ios for iOS systems. GOOS=ios matches "darwin"
build tag, like GOOS=android matches "linux" and GOOS=illumos
matches "solaris". Only ios/arm64 is supported (ios/amd64 is
not).

GOOS=ios and GOOS=darwin remain essentially the same at this
point. They will diverge at later time, to differentiate macOS
and iOS.

Uses of GOOS=="darwin" are changed to (GOOS=="darwin" || GOOS=="ios"),
except if it clearly means macOS (e.g. GOOS=="darwin" && GOARCH=="amd64"),
it remains GOOS=="darwin".

Updates #38485.

Change-Id: I4faacdc1008f42434599efb3c3ad90763a83b67c
Reviewed-on: https://go-review.googlesource.com/c/go/+/254740
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
This commit is contained in:
Cherry Zhang 2020-09-16 16:59:58 -04:00
parent bc320fc1f5
commit a413908dd0
99 changed files with 215 additions and 125 deletions
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4
src/runtime/signal_unix.go
View file

@ -346,7 +346,7 @@ const preemptMSupported = true
// safe-point, it will preempt the goroutine. It always atomically
// increments mp.preemptGen after handling a preemption request.
func preemptM(mp *m) {
if GOOS == "darwin" && GOARCH == "arm64" && !iscgo {
if (GOOS == "darwin" || GOOS == "ios") && GOARCH == "arm64" && !iscgo {
// On darwin, we use libc calls, and cgo is required on ARM64
// so we have TLS set up to save/restore G during C calls. If cgo is
// absent, we cannot save/restore G in TLS, and if a signal is
@ -975,7 +975,7 @@ func sigfwdgo(sig uint32, info *siginfo, ctx unsafe.Pointer) bool {
// This function and its caller sigtrampgo assumes SIGPIPE is delivered on the
// originating thread. This property does not hold on macOS (golang.org/issue/33384),
// so we have no choice but to ignore SIGPIPE.
if GOOS == "darwin" && sig == _SIGPIPE {
if (GOOS == "darwin" || GOOS == "ios") && sig == _SIGPIPE {
return true
}