powerpc: merge ucontext.h

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

include/asm-ppc/ucontext.h → include/asm-powerpc/ucontext.h

-#ifndef _ASMPPC_UCONTEXT_H
-#define _ASMPPC_UCONTEXT_H
+#ifndef _ASM_POWERPC_UCONTEXT_H
+#define _ASM_POWERPC_UCONTEXT_H
 
+#ifdef __powerpc64__
+#include <asm/sigcontext.h>
+#else
 #include <asm/elf.h>
+#endif
 #include <asm/signal.h>
 
+#ifndef __powerpc64__
 struct mcontext {
 	elf_gregset_t	mc_gregs;
 	elf_fpregset_t	mc_fregs;
 	unsigned long	mc_pad[2];
 	elf_vrregset_t	mc_vregs __attribute__((__aligned__(16)));
 };
+#endif
 
 struct ucontext {
-	unsigned long	 uc_flags;
+	unsigned long	uc_flags;
 	struct ucontext __user *uc_link;
-	stack_t		 uc_stack;
-	int		 uc_pad[7];
+	stack_t		uc_stack;
+#ifndef __powerpc64__
+	int		uc_pad[7];
 	struct mcontext	__user *uc_regs;/* points to uc_mcontext field */
-	sigset_t	 uc_sigmask;
+#endif
+	sigset_t	uc_sigmask;
 	/* glibc has 1024-bit signal masks, ours are 64-bit */
-	int		 uc_maskext[30];
-	int		 uc_pad2[3];
-	struct mcontext	 uc_mcontext;
+#ifdef __powerpc64__
+	sigset_t	__unused[15];	/* Allow for uc_sigmask growth */
+	struct sigcontext uc_mcontext;	/* last for extensibility */
+#else
+	int		uc_maskext[30];
+	int		uc_pad2[3];
+	struct mcontext	uc_mcontext;
+#endif
 };
 
-#endif /* !_ASMPPC_UCONTEXT_H */
+#endif /* _ASM_POWERPC_UCONTEXT_H */

include/asm-ppc64/ucontext.h

-#ifndef _ASMPPC64_UCONTEXT_H
-#define _ASMPPC64_UCONTEXT_H
-
-#include <asm/sigcontext.h>
-
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-struct ucontext {
-	unsigned long	  uc_flags;
-	struct ucontext  *uc_link;
-	stack_t		  uc_stack;
-	sigset_t	  uc_sigmask;
-	sigset_t	  __unsued[15];	/* Allow for uc_sigmask growth */
-	struct sigcontext uc_mcontext;  /* last for extensibility */
-};
-
-#endif /* _ASMPPC64_UCONTEXT_H */