runtime: cleanup crashstack code

This patch removes redundant guards for the crash stack feature, as all
supported Go architectures now have a crash stack implementation.

Change-Id: I7ffb61c57955778d687073418130b2aaab0ff183
GitHub-Last-Rev: 6ff56d6420093ee8f95c75019557dc8bcec32ed7
GitHub-Pull-Request: golang/go#67202
Reviewed-on: https://go-review.googlesource.com/c/go/+/583416
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Mauri de Souza Meneguzzo <mauri870@gmail.com>

diff --git a/src/runtime/asm.s b/src/runtime/asm.s
index b4bcb04cd1dd582ac49e8cf0050ab7fc28eccbe1..f487e441009c2ef8da52da69acb31004dcab0bdb 100644 (file)
--- a/src/runtime/asm.s
+++ b/src/runtime/asm.s
@@ -13,34 +13,3 @@ TEXT ·sigpanic0(SB),NOSPLIT,$0-0
 TEXT ·mapinitnoop<ABIInternal>(SB),NOSPLIT,$0-0
        RET
 
-#ifndef GOARCH_386
-#ifndef GOARCH_arm
-#ifndef GOARCH_amd64
-#ifndef GOARCH_arm64
-#ifndef GOARCH_loong64
-#ifndef GOARCH_mips
-#ifndef GOARCH_mipsle
-#ifndef GOARCH_mips64
-#ifndef GOARCH_mips64le
-#ifndef GOARCH_ppc64
-#ifndef GOARCH_ppc64le
-#ifndef GOARCH_riscv64
-#ifndef GOARCH_s390x
-#ifndef GOARCH_wasm
-// stub to appease shared build mode.
-TEXT ·switchToCrashStack0<ABIInternal>(SB),NOSPLIT,$0-0
-       UNDEF
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif
-#endif

diff --git a/src/runtime/proc.go b/src/runtime/proc.go
index 13a8d70186e975bdb948fbdac63c91f22a985154..140f06d03d76aec03f4d640fd01b7d4c63ff3983 100644 (file)
--- a/src/runtime/proc.go
+++ b/src/runtime/proc.go
@@ -578,7 +578,7 @@ func switchToCrashStack(fn func()) {
 // Disable crash stack on Windows for now. Apparently, throwing an exception
 // on a non-system-allocated crash stack causes EXCEPTION_STACK_OVERFLOW and
 // hangs the process (see issue 63938).
-const crashStackImplemented = (GOARCH == "386" || GOARCH == "amd64" || GOARCH == "arm" || GOARCH == "arm64" || GOARCH == "loong64" || GOARCH == "mips" || GOARCH == "mipsle" || GOARCH == "mips64" || GOARCH == "mips64le" || GOARCH == "ppc64" || GOARCH == "ppc64le" || GOARCH == "riscv64" || GOARCH == "s390x" || GOARCH == "wasm") && GOOS != "windows"
+const crashStackImplemented = GOOS != "windows"
 
 //go:noescape
 func switchToCrashStack0(fn func()) // in assembly