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-rw-r--r--tools/testing/selftests/sigaltstack/current_stack_pointer.h23
-rw-r--r--tools/testing/selftests/sigaltstack/sas.c7
2 files changed, 24 insertions, 6 deletions
diff --git a/tools/testing/selftests/sigaltstack/current_stack_pointer.h b/tools/testing/selftests/sigaltstack/current_stack_pointer.h
new file mode 100644
index 000000000000..ea9bdf3a90b1
--- /dev/null
+++ b/tools/testing/selftests/sigaltstack/current_stack_pointer.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#if __alpha__
+register unsigned long sp asm("$30");
+#elif __arm__ || __aarch64__ || __csky__ || __m68k__ || __mips__ || __riscv
+register unsigned long sp asm("sp");
+#elif __i386__
+register unsigned long sp asm("esp");
+#elif __loongarch64
+register unsigned long sp asm("$sp");
+#elif __ppc__
+register unsigned long sp asm("r1");
+#elif __s390x__
+register unsigned long sp asm("%15");
+#elif __sh__
+register unsigned long sp asm("r15");
+#elif __x86_64__
+register unsigned long sp asm("rsp");
+#elif __XTENSA__
+register unsigned long sp asm("a1");
+#else
+#error "implement current_stack_pointer equivalent"
+#endif
diff --git a/tools/testing/selftests/sigaltstack/sas.c b/tools/testing/selftests/sigaltstack/sas.c
index 228c2ae47687..6069d97bf506 100644
--- a/tools/testing/selftests/sigaltstack/sas.c
+++ b/tools/testing/selftests/sigaltstack/sas.c
@@ -19,6 +19,7 @@
#include <errno.h>
#include "../kselftest.h"
+#include "current_stack_pointer.h"
#ifndef SS_AUTODISARM
#define SS_AUTODISARM (1U << 31)
@@ -40,12 +41,6 @@ void my_usr1(int sig, siginfo_t *si, void *u)
stack_t stk;
struct stk_data *p;
-#if __s390x__
- register unsigned long sp asm("%15");
-#else
- register unsigned long sp asm("sp");
-#endif
-
if (sp < (unsigned long)sstack ||
sp >= (unsigned long)sstack + SIGSTKSZ) {
ksft_exit_fail_msg("SP is not on sigaltstack\n");