On 2014/9/4 5:19, Andrew Pinski wrote: > Defines the macros which allow the signal structures to be the same between > ILP32 and LP64. > > Signed-off-by: Andrew Pinski <apin...@cavium.com> > --- > arch/arm64/include/uapi/asm/siginfo.h | 33 ++++++++++++++++++++++++++++++++ > arch/arm64/include/uapi/asm/signal.h | 34 > +++++++++++++++++++++++++++++++++ > 2 files changed, 67 insertions(+), 0 deletions(-) > > diff --git a/arch/arm64/include/uapi/asm/siginfo.h > b/arch/arm64/include/uapi/asm/siginfo.h > index 5a74a08..c80c612 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 +19,38 @@ > > #define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int)) > > +#ifdef __ILP32__ > + > +/* > + * For ILP32, the siginfo structures should share the same layout and > + * alignement requirements as LP64 ABI. > + * To do this, use an extra pad field and add aligned attribute > + * to the structure. > + */ > + > +# 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_VOIDPTR > +# define __SIGINFO_VOIDPTR(field) \ > + __SIGINFO_INNER(void __user*, field) > +# undef __SIGINFO_BAND > + > +# define __SIGINFO_BAND(field) \ > + __SIGINFO_INNER(long, field) > + > +/* Make the alignment of siginfo always 8 byte aligned. */ > +#define __ARCH_SI_ATTRIBUTES __attribute__((aligned(8))) > + > +#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..d33a5f7 100644 > --- a/arch/arm64/include/uapi/asm/signal.h > +++ b/arch/arm64/include/uapi/asm/signal.h > @@ -16,9 +16,43 @@ > #ifndef __ASM_SIGNAL_H > #define __ASM_SIGNAL_H > > +#include <asm/posix-types.h> typos here, it should be #include <asm/posix_types.h> > + > /* Required for AArch32 compatibility. */ > #define SA_RESTORER 0x04000000 > > +/* > + * Since sigset is a bitmask, we need the same size fields for ILP32 > + * and LP64. With big-endian, 32bit bitmask does not match up to > + * 64bit bitmask (unlike with little-endian). > + */ > +#ifdef __ILP32__ > + > +#define __SIGSET_INNER_TYPE __kernel_ulong_t > +#define _NSIG_BPW 64 > + > +# ifdef __AARCH64EB__ > +# define __SIGNAL_INNER(type, field) \ > + int __pad_##field; \ > + type field; > +# else > +# define __SIGNAL_INNER(type, field) \ > + type field; \ > + int __pad_##field; > +# endif > + > +# define __SIGACTION_HANDLER(field) \ > + __SIGNAL_INNER(__sighandler_t, field) > + > + > +#define __SIGACTION_FLAGS(field) \ > + __kernel_ulong_t field > + > +#define __SIGACTION_RESTORER(field) \ > + __SIGNAL_INNER(__sigrestore_t, field) > + > +#endif > + > #include <asm-generic/signal.h> > > #endif >
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