From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Wed, 5 Aug 2015 17:04:01 -0300
Subject: Initial import

---
 arch/x86/include/asm/signal.h | 104 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 arch/x86/include/asm/signal.h

(limited to 'arch/x86/include/asm/signal.h')

diff --git a/arch/x86/include/asm/signal.h b/arch/x86/include/asm/signal.h
new file mode 100644
index 000000000..31eab867e
--- /dev/null
+++ b/arch/x86/include/asm/signal.h
@@ -0,0 +1,104 @@
+#ifndef _ASM_X86_SIGNAL_H
+#define _ASM_X86_SIGNAL_H
+
+#ifndef __ASSEMBLY__
+#include <linux/linkage.h>
+
+/* Most things should be clean enough to redefine this at will, if care
+   is taken to make libc match.  */
+
+#define _NSIG		64
+
+#ifdef __i386__
+# define _NSIG_BPW	32
+#else
+# define _NSIG_BPW	64
+#endif
+
+#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;
+
+#ifndef CONFIG_COMPAT
+typedef sigset_t compat_sigset_t;
+#endif
+
+#endif /* __ASSEMBLY__ */
+#include <uapi/asm/signal.h>
+#ifndef __ASSEMBLY__
+extern void do_notify_resume(struct pt_regs *, void *, __u32);
+
+#define __ARCH_HAS_SA_RESTORER
+
+#include <asm/sigcontext.h>
+
+#ifdef __i386__
+
+#define __HAVE_ARCH_SIG_BITOPS
+
+#define sigaddset(set,sig)		    \
+	(__builtin_constant_p(sig)	    \
+	 ? __const_sigaddset((set), (sig))  \
+	 : __gen_sigaddset((set), (sig)))
+
+static inline void __gen_sigaddset(sigset_t *set, int _sig)
+{
+	asm("btsl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc");
+}
+
+static inline void __const_sigaddset(sigset_t *set, int _sig)
+{
+	unsigned long sig = _sig - 1;
+	set->sig[sig / _NSIG_BPW] |= 1 << (sig % _NSIG_BPW);
+}
+
+#define sigdelset(set, sig)		    \
+	(__builtin_constant_p(sig)	    \
+	 ? __const_sigdelset((set), (sig))  \
+	 : __gen_sigdelset((set), (sig)))
+
+
+static inline void __gen_sigdelset(sigset_t *set, int _sig)
+{
+	asm("btrl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc");
+}
+
+static inline void __const_sigdelset(sigset_t *set, int _sig)
+{
+	unsigned long sig = _sig - 1;
+	set->sig[sig / _NSIG_BPW] &= ~(1 << (sig % _NSIG_BPW));
+}
+
+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("btl %2,%1\n\tsbbl %0,%0"
+	    : "=r"(ret) : "m"(*set), "Ir"(_sig-1) : "cc");
+	return ret;
+}
+
+#define sigismember(set, sig)			\
+	(__builtin_constant_p(sig)		\
+	 ? __const_sigismember((set), (sig))	\
+	 : __gen_sigismember((set), (sig)))
+
+struct pt_regs;
+
+#else /* __i386__ */
+
+#undef __HAVE_ARCH_SIG_BITOPS
+
+#endif /* !__i386__ */
+
+#endif /* __ASSEMBLY__ */
+#endif /* _ASM_X86_SIGNAL_H */
-- 
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