linux-kernel - [PATCH 07/24] ARM64:ILP32: Use the same size and layout of the signal structures for ILP32 as for LP64.

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Date:	Sat, 24 May 2014 00:02:02 -0700
From:	Andrew Pinski <apinski@...ium.com>
To:	linux-kernel@...r.kernel.org
Cc:	Andrew Pinski <apinski@...ium.com>
Subject: [PATCH 07/24] ARM64:ILP32: Use the same size and layout of the signal structures for ILP32 as for LP64.

Defines the macros which allow the signal structures to be the same between ILP32 and LP64.

Thanks,
Andrew Pinski

Signed-off-by: Andrew Pinski <apinski@...ium.com>

---
 arch/arm64/include/uapi/asm/siginfo.h |   21 +++++++++++++++++++++
 arch/arm64/include/uapi/asm/signal.h  |   32 ++++++++++++++++++++++++++++++++
 2 files changed, 53 insertions(+), 0 deletions(-)

diff --git a/arch/arm64/include/uapi/asm/siginfo.h b/arch/arm64/include/uapi/asm/siginfo.h
index 5a74a08..1a6aa32 100644
--- a/arch/arm64/include/uapi/asm/siginfo.h
+++ b/arch/arm64/include/uapi/asm/siginfo.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2012 ARM Ltd.
+ * Copyright (C) 2014 Cavium Inc.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -18,6 +19,26 @@
 
 #define __ARCH_SI_PREAMBLE_SIZE	(4 * sizeof(int))
 
+#ifdef __ILP32__
+# ifdef __AARCH64EB__
+#  define __SIGINFO_INNER(type, field)		\
+		int __pad#field;		\
+		type field
+# else
+#  define __SIGINFO_INNER(type, field)		\
+		type field;			\
+		int __pad#field
+# endif
+
+# undef __SIGINFO_VOIDPOINTER
+# define __SIGINFO_VOIDPOINTER(field)		\
+		__SIGINFO_INNER(void __user*, field)
+# undef __SIGINFO_BAND
+
+# define __SIGINFO_BAND(field)			\
+	__SIGINFO_INNER(long, field)
+#endif
+
 #include <asm-generic/siginfo.h>
 
 #endif
diff --git a/arch/arm64/include/uapi/asm/signal.h b/arch/arm64/include/uapi/asm/signal.h
index 8d1e723..d90d53b 100644
--- a/arch/arm64/include/uapi/asm/signal.h
+++ b/arch/arm64/include/uapi/asm/signal.h
@@ -19,6 +19,38 @@
 /* Required for AArch32 compatibility. */
 #define SA_RESTORER	0x04000000
 
+/* For ILP32, sigset should be the same size fields as LP64 so use
+   unsigned long long. */
+#ifdef __ILP32__
+#define __SIGSET_INNER_TYPE __extension__ unsigned long long
+#define _NSIG_BPW 64
+
+# ifdef __AARCH64EB__
+#  define __SIGNAL_INNER(type, field)		\
+	__extension__ struct {			\
+		int __pad_##field;		\
+		type field;			\
+	} __attribute__((aligned(8)))
+# else
+#  define __SIGNAL_INNER(type, field)		\
+	__extension__ struct {			\
+		type field;			\
+		int __pad_##field;		\
+	} __attribute__((aligned(8)))
+# endif
+
+# define __SIGACTION_HANDLER(field)		\
+	__SIGNAL_INNER(__sighandler_t, field)
+
+
+#define __SIGACTION_FLAGS(field)		\
+	__extension__ unsigned long long field
+
+#define __SIGACTION_RESTORER(field)		\
+	__SIGNAL_INNER(__sigrestore_t, field)
+
+#endif
+
 #include <asm-generic/signal.h>
 
 #endif
-- 
1.7.2.5

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