[release-branch.go1.25] runtime: mark getfp as nosplit

When compiling with -l, we can't take a stack split here.

Fixes #76761

Change-Id: Ieab1225c6259c7f16bb5188aa84bff615d9db2e5
Reviewed-on: https://go-review.googlesource.com/c/go/+/728060
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Keith Randall <khr@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Keith Randall <khr@google.com>
(cherry picked from commit d4972f6295aede2ddc35bcb1da5f6351623e9e4d)
Reviewed-on: https://go-review.googlesource.com/c/go/+/728581

9 files changed, 18 insertions, 0 deletions

diff --git a/src/runtime/os_wasm.go b/src/runtime/os_wasm.go
index 15137cc13f..e7a9a13d29 100644
--- a/src/runtime/os_wasm.go
+++ b/src/runtime/os_wasm.go
@@ -142,6 +142,8 @@ func preemptM(mp *m) {
 
 // getfp returns the frame pointer register of its caller or 0 if not implemented.
 // TODO: Make this a compiler intrinsic
+//
+//go:nosplit
 func getfp() uintptr { return 0 }
 
 func setProcessCPUProfiler(hz int32) {}
diff --git a/src/runtime/stubs_386.go b/src/runtime/stubs_386.go
index a1dd023974..7db27cce87 100644
--- a/src/runtime/stubs_386.go
+++ b/src/runtime/stubs_386.go
@@ -21,4 +21,6 @@ func asmcgocall_no_g(fn, arg unsafe.Pointer)
 
 // getfp returns the frame pointer register of its caller or 0 if not implemented.
 // TODO: Make this a compiler intrinsic
+//
+//go:nosplit
 func getfp() uintptr { return 0 }
diff --git a/src/runtime/stubs_arm.go b/src/runtime/stubs_arm.go
index e19f1a87b2..49bfd9ef04 100644
--- a/src/runtime/stubs_arm.go
+++ b/src/runtime/stubs_arm.go
@@ -26,4 +26,6 @@ func asmcgocall_no_g(fn, arg unsafe.Pointer)
 
 // getfp returns the frame pointer register of its caller or 0 if not implemented.
 // TODO: Make this a compiler intrinsic
+//
+//go:nosplit
 func getfp() uintptr { return 0 }
diff --git a/src/runtime/stubs_loong64.go b/src/runtime/stubs_loong64.go
index 4576089b0b..88d5985db0 100644
--- a/src/runtime/stubs_loong64.go
+++ b/src/runtime/stubs_loong64.go
@@ -19,4 +19,6 @@ func unspillArgs()
 
 // getfp returns the frame pointer register of its caller or 0 if not implemented.
 // TODO: Make this a compiler intrinsic
+//
+//go:nosplit
 func getfp() uintptr { return 0 }
diff --git a/src/runtime/stubs_mips64x.go b/src/runtime/stubs_mips64x.go
index f0cf088620..fb5220b0de 100644
--- a/src/runtime/stubs_mips64x.go
+++ b/src/runtime/stubs_mips64x.go
@@ -17,4 +17,6 @@ func asmcgocall_no_g(fn, arg unsafe.Pointer)
 
 // getfp returns the frame pointer register of its caller or 0 if not implemented.
 // TODO: Make this a compiler intrinsic
+//
+//go:nosplit
 func getfp() uintptr { return 0 }
diff --git a/src/runtime/stubs_mipsx.go b/src/runtime/stubs_mipsx.go
index 84ba147b85..175d4f9741 100644
--- a/src/runtime/stubs_mipsx.go
+++ b/src/runtime/stubs_mipsx.go
@@ -12,4 +12,6 @@ func save_g()
 
 // getfp returns the frame pointer register of its caller or 0 if not implemented.
 // TODO: Make this a compiler intrinsic
+//
+//go:nosplit
 func getfp() uintptr { return 0 }
diff --git a/src/runtime/stubs_ppc64x.go b/src/runtime/stubs_ppc64x.go
index 36b01a72b1..dbc82c8453 100644
--- a/src/runtime/stubs_ppc64x.go
+++ b/src/runtime/stubs_ppc64x.go
@@ -23,4 +23,6 @@ func unspillArgs()
 
 // getfp returns the frame pointer register of its caller or 0 if not implemented.
 // TODO: Make this a compiler intrinsic
+//
+//go:nosplit
 func getfp() uintptr { return 0 }
diff --git a/src/runtime/stubs_riscv64.go b/src/runtime/stubs_riscv64.go
index 61a6e33bd4..2306ba878b 100644
--- a/src/runtime/stubs_riscv64.go
+++ b/src/runtime/stubs_riscv64.go
@@ -22,4 +22,6 @@ func unspillArgs()
 
 // getfp returns the frame pointer register of its caller or 0 if not implemented.
 // TODO: Make this a compiler intrinsic
+//
+//go:nosplit
 func getfp() uintptr { return 0 }
diff --git a/src/runtime/stubs_s390x.go b/src/runtime/stubs_s390x.go
index a2b07ff8aa..90d9bcb7ce 100644
--- a/src/runtime/stubs_s390x.go
+++ b/src/runtime/stubs_s390x.go
@@ -10,4 +10,6 @@ func save_g()
 
 // getfp returns the frame pointer register of its caller or 0 if not implemented.
 // TODO: Make this a compiler intrinsic
+//
+//go:nosplit
 func getfp() uintptr { return 0 }