1 files changed, 79 insertions, 0 deletions
diff --git a/libc/arch-arm/include/machine/signal.h b/libc/arch-arm/include/machine/signal.h
new file mode 100644
index 0000000..ead980c
--- /dev/null
+++ b/libc/arch-arm/include/machine/signal.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#ifndef _ARCH_ARM_MACHINE_SIGNAL_H_
+#define _ARCH_ARM_MACHINE_SIGNAL_H_
+
+#include <stddef.h>
+#include <sys/cdefs.h>
+#include <sys/types.h>
+
+__BEGIN_DECLS
+
+/* Include the kernel-specific definitions */
+#include <asm/posix_types.h>
+#include <asm/signal.h>
+#include <asm/sigcontext.h>
+
+#ifdef _ASM_GENERIC_SIGINFO_H
+#error "You cannot include <asm/siginfo.h> before <signal.h>!"
+#endif
+#define __ARCH_SI_UID_T __kernel_uid32_t
+#include <asm/siginfo.h>
+#undef __ARCH_SI_UID_T
+
+#include <stdint.h>
+
+/* Despite the fact that <linux/types.h> defines sigset_t as a 32-bit type,
+ * the ARM kernel *really* expects a 64-bit signal set type during syscalls.
+ *
+ * The reason for this is that the kernel headers have a different definition
+ * for sigset_t depending on the value of the __KERNEL__ macro. When we cleanup
+ * the headers, before placing them under bionic/libc/kernel/, this macro is
+ * optimized as undefined, to the 32-bit definition stays.
+ *
+ * Ironically, the reason the kernel headers do this is to accomodate old
+ * versions of GLibc. More recent versions provide complete wrappers for the
+ * corresponding kernel types so don't have this problem (their sigset_t can
+ * always hold up to 1024 signals, independent of the platform).
+ */
+typedef unsigned long __kernel_sigset_t[2];
+
+/* _NSIG is used by the SIGRTMAX definition under <asm/signal.h>, however
+ * its definition is part of a #if __KERNEL__ .. #endif block in the original
+ * kernel headers and is thus not part of our cleaned-up versions.
+ *
+ * Looking at the current kernel sources, it is defined as 64 for ARM.
+ */
+#ifndef _NSIG
+#  define _NSIG  64
+#endif
+
+
+__END_DECLS
+
+#endif /* _ARCH_ARM_MACHINE_SIGNAL_H_ */