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all: remove scattered remnants of darwin/arm

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This removes all conditions and conditional code (that I could find)
that depended on darwin/arm.

Fixes #35439 (since that only happened on darwin/arm)
Fixes #37611.

Change-Id: Ia4c32a5a4368ed75231075832b0b5bfb1ad11986
Reviewed-on: https://go-review.googlesource.com/c/go/+/227198
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
This commit is contained in:
Austin Clements 2020-04-03 12:22:27 -04:00
parent da8591b61c
commit f7e6ab44b4
50 changed files with 81 additions and 174 deletions
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6
src/runtime/signal_unix.go
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@ -350,8 +350,8 @@ func preemptM(mp *m) {
// yet, so doSigPreempt won't work.
return
}
if GOOS == "darwin" && (GOARCH == "arm" || GOARCH == "arm64") && !iscgo {
// On darwin, we use libc calls, and cgo is required on ARM and ARM64
if GOOS == "darwin" && 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
// received during C execution we cannot get the G. Therefore don't
@ -1191,7 +1191,7 @@ func signalstack(s *stack) {
sigaltstack(&st, nil)
}
// setsigsegv is used on darwin/arm{,64} to fake a segmentation fault.
// setsigsegv is used on darwin/arm64 to fake a segmentation fault.
//
// This is exported via linkname to assembly in runtime/cgo.
//