runtime: unify handling of alternate signal stack
Change all Unix systems to use stackt for the alternate signal
stack (some were using sigaltstackt). Add OS-specific setSignalstackSP
function to handle different types for ss_sp field, and unify all
OS-specific signalstack functions into one. Unify handling of alternate
signal stack in OS-specific minit and sigtrampgo functions via new
functions minitSignalstack and setGsignalStack.
Change-Id: Idc316dc69b1dd725717acdf61a1cd8b9f33ed174
Reviewed-on: https://go-review.googlesource.com/29757
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
diff --git a/src/runtime/defs_linux_s390x.go b/src/runtime/defs_linux_s390x.go
index 5f55d5a..ab90723 100644
--- a/src/runtime/defs_linux_s390x.go
+++ b/src/runtime/defs_linux_s390x.go
@@ -143,7 +143,7 @@
_SA_RESTORER = 0
)
-type sigaltstackt struct {
+type stackt struct {
ss_sp *byte
ss_flags int32
ss_size uintptr
@@ -161,7 +161,7 @@
type ucontext struct {
uc_flags uint64
uc_link *ucontext
- uc_stack sigaltstackt
+ uc_stack stackt
uc_mcontext sigcontext
uc_sigmask uint64
}
