1 files changed, 66 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/signal.h b/arch/m68k/include/asm/signal.h
new file mode 100644
index 000000000..8af85c38d
--- /dev/null
+++ b/arch/m68k/include/asm/signal.h
@@ -0,0 +1,66 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _M68K_SIGNAL_H
+#define _M68K_SIGNAL_H
+
+#include <uapi/asm/signal.h>
+
+/* Most things should be clean enough to redefine this at will, if care
+   is taken to make libc match.  */
+
+#define _NSIG		64
+#define _NSIG_BPW	32
+#define _NSIG_WORDS	(_NSIG / _NSIG_BPW)
+
+typedef unsigned long old_sigset_t;		/* at least 32 bits */
+
+typedef struct {
+	unsigned long sig[_NSIG_WORDS];
+} sigset_t;
+
+#define __ARCH_HAS_SA_RESTORER
+
+#include <asm/sigcontext.h>
+
+#ifndef CONFIG_CPU_HAS_NO_BITFIELDS
+#define __HAVE_ARCH_SIG_BITOPS
+
+static inline void sigaddset(sigset_t *set, int _sig)
+{
+	asm ("bfset %0{%1,#1}"
+		: "+o" (*set)
+		: "id" ((_sig - 1) ^ 31)
+		: "cc");
+}
+
+static inline void sigdelset(sigset_t *set, int _sig)
+{
+	asm ("bfclr %0{%1,#1}"
+		: "+o" (*set)
+		: "id" ((_sig - 1) ^ 31)
+		: "cc");
+}
+
+static inline int __const_sigismember(sigset_t *set, int _sig)
+{
+	unsigned long sig = _sig - 1;
+	return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW));
+}
+
+static inline int __gen_sigismember(sigset_t *set, int _sig)
+{
+	int ret;
+	asm ("bfextu %1{%2,#1},%0"
+		: "=d" (ret)
+		: "o" (*set), "id" ((_sig-1) ^ 31)
+		: "cc");
+	return ret;
+}
+
+#define sigismember(set,sig)			\
+	(__builtin_constant_p(sig) ?		\
+	 __const_sigismember(set,sig) :		\
+	 __gen_sigismember(set,sig))
+
+#endif /* !CONFIG_CPU_HAS_NO_BITFIELDS */
+
+#endif /* _M68K_SIGNAL_H */