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1a33b18b3b
Parts of linux/compat.h are under an #ifdef, but we end up using more of those over time, moving things around bit by bit. To get it over with once and for all, make all of this file uncondititonal now so it can be accessed everywhere. There are only a few types left that are in asm/compat.h but not yet in the asm-generic version, so add those in the process. This requires providing a few more types in asm-generic/compat.h that were not already there. The only tricky one is compat_sigset_t, which needs a little help on 32-bit architectures and for x86. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
110 lines
2.4 KiB
C
110 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_SIGNAL_H
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#define _ASM_X86_SIGNAL_H
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#ifndef __ASSEMBLY__
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#include <linux/linkage.h>
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/* Most things should be clean enough to redefine this at will, if care
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is taken to make libc match. */
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#define _NSIG 64
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#ifdef __i386__
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# define _NSIG_BPW 32
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#else
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# define _NSIG_BPW 64
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#endif
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#define _NSIG_WORDS (_NSIG / _NSIG_BPW)
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typedef unsigned long old_sigset_t; /* at least 32 bits */
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typedef struct {
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unsigned long sig[_NSIG_WORDS];
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} sigset_t;
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/* non-uapi in-kernel SA_FLAGS for those indicates ABI for a signal frame */
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#define SA_IA32_ABI 0x02000000u
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#define SA_X32_ABI 0x01000000u
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#ifndef CONFIG_COMPAT
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#define compat_sigset_t compat_sigset_t
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typedef sigset_t compat_sigset_t;
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#endif
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#endif /* __ASSEMBLY__ */
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#include <uapi/asm/signal.h>
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#ifndef __ASSEMBLY__
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#define __ARCH_HAS_SA_RESTORER
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#include <asm/asm.h>
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#include <uapi/asm/sigcontext.h>
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#ifdef __i386__
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#define __HAVE_ARCH_SIG_BITOPS
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#define sigaddset(set,sig) \
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(__builtin_constant_p(sig) \
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? __const_sigaddset((set), (sig)) \
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: __gen_sigaddset((set), (sig)))
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static inline void __gen_sigaddset(sigset_t *set, int _sig)
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{
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asm("btsl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc");
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}
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static inline void __const_sigaddset(sigset_t *set, int _sig)
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{
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unsigned long sig = _sig - 1;
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set->sig[sig / _NSIG_BPW] |= 1 << (sig % _NSIG_BPW);
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}
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#define sigdelset(set, sig) \
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(__builtin_constant_p(sig) \
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? __const_sigdelset((set), (sig)) \
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: __gen_sigdelset((set), (sig)))
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static inline void __gen_sigdelset(sigset_t *set, int _sig)
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{
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asm("btrl %1,%0" : "+m"(*set) : "Ir"(_sig - 1) : "cc");
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}
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static inline void __const_sigdelset(sigset_t *set, int _sig)
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{
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unsigned long sig = _sig - 1;
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set->sig[sig / _NSIG_BPW] &= ~(1 << (sig % _NSIG_BPW));
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}
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static inline int __const_sigismember(sigset_t *set, int _sig)
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{
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unsigned long sig = _sig - 1;
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return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW));
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}
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static inline int __gen_sigismember(sigset_t *set, int _sig)
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{
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bool ret;
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asm("btl %2,%1" CC_SET(c)
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: CC_OUT(c) (ret) : "m"(*set), "Ir"(_sig-1));
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return ret;
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}
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#define sigismember(set, sig) \
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(__builtin_constant_p(sig) \
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? __const_sigismember((set), (sig)) \
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: __gen_sigismember((set), (sig)))
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struct pt_regs;
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#else /* __i386__ */
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#undef __HAVE_ARCH_SIG_BITOPS
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#endif /* !__i386__ */
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#endif /* __ASSEMBLY__ */
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#endif /* _ASM_X86_SIGNAL_H */
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