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| author | Russ Cox <rsc@golang.org> | 2021-01-27 01:06:52 -0500 |
|---|---|---|
| committer | Russ Cox <rsc@golang.org> | 2021-02-19 00:01:38 +0000 |
| commit | 8ac23a1f151a9b1842797652ed7761f397055b5b (patch) | |
| tree | c3948d0a51feb71a12a7696df67cff07ae30e3b8 /src/runtime/cgocall.go | |
| parent | 678568a5cfe1806c16bf478234d6dac283c3474d (diff) | |
| download | go-8ac23a1f151a9b1842797652ed7761f397055b5b.tar.gz go-8ac23a1f151a9b1842797652ed7761f397055b5b.zip | |
runtime: document, clean up internal/sys
Document what the values in internal/sys mean.
Remove various special cases for arm64 in the code using StackAlign.
Delete Uintreg - it was for GOARCH=amd64p32,
which was specific to GOOS=nacl and has been retired.
This CL is part of a stack adding windows/arm64
support (#36439), intended to land in the Go 1.17 cycle.
This CL is, however, not windows/arm64-specific.
It is cleanup meant to make the port (and future ports) easier.
Change-Id: I40e8fa07b4e192298b6536b98a72a751951a4383
Reviewed-on: https://go-review.googlesource.com/c/go/+/288795
Trust: Russ Cox <rsc@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Diffstat (limited to 'src/runtime/cgocall.go')
| -rw-r--r-- | src/runtime/cgocall.go | 9 |
1 files changed, 1 insertions, 8 deletions
diff --git a/src/runtime/cgocall.go b/src/runtime/cgocall.go index 20cacd6043..534a2c4295 100644 --- a/src/runtime/cgocall.go +++ b/src/runtime/cgocall.go @@ -306,14 +306,7 @@ func unwindm(restore *bool) { // unwind of g's stack (see comment at top of file). mp := acquirem() sched := &mp.g0.sched - switch GOARCH { - default: - throw("unwindm not implemented") - case "386", "amd64", "arm", "ppc64", "ppc64le", "mips64", "mips64le", "s390x", "mips", "mipsle", "riscv64": - sched.sp = *(*uintptr)(unsafe.Pointer(sched.sp + sys.MinFrameSize)) - case "arm64": - sched.sp = *(*uintptr)(unsafe.Pointer(sched.sp + 16)) - } + sched.sp = *(*uintptr)(unsafe.Pointer(sched.sp + alignUp(sys.MinFrameSize, sys.StackAlign))) // Do the accounting that cgocall will not have a chance to do // during an unwind. |