diff options
Diffstat (limited to 'libc/sysdeps/linux/common/bits/sigset.h')
| -rw-r--r-- | libc/sysdeps/linux/common/bits/sigset.h | 31 |
1 files changed, 20 insertions, 11 deletions
diff --git a/libc/sysdeps/linux/common/bits/sigset.h b/libc/sysdeps/linux/common/bits/sigset.h index 964b09178..7ec87eb1d 100644 --- a/libc/sysdeps/linux/common/bits/sigset.h +++ b/libc/sysdeps/linux/common/bits/sigset.h @@ -23,15 +23,24 @@ typedef int __sig_atomic_t; /* A 'sigset_t' has a bit for each signal. - * Signal 0 does not exist, so we have signals 1..64. - * glibc has space for 1024 signals (!), but all arches supported - * by Linux have 64 signals only. - * See, for example, _NSIG (defined to 65) in signum.h + * glibc has space for 1024 signals (!), but most arches supported + * by Linux have 64 signals, and only MIPS has 128. + * There seems to be some historical baggage in sparc[64] + * where they might have (or had in the past) 32 signals only, + * I hope it's irrelevant now. + * Signal 0 does not exist, so we have signals 1..64, not 0..63. + * Note that struct sigaction has embedded sigset_t, + * and this necessitates translation in sigaction() + * to convert it to struct kernel_sigaction. + * See libc/.../sigaction.c, libc/.../kernel_sigaction.h */ - -# define _SIGSET_NWORDS (64 / (8 * sizeof (unsigned long int))) +#if defined(__mips__) +# define _SIGSET_NWORDS (128 / (8 * sizeof (unsigned long))) +#else +# define _SIGSET_NWORDS (64 / (8 * sizeof (unsigned long))) +#endif typedef struct { - unsigned long int __val[_SIGSET_NWORDS]; + unsigned long __val[_SIGSET_NWORDS]; } __sigset_t; #endif @@ -53,10 +62,10 @@ typedef struct { /* Return a mask that includes the bit for SIG only. */ /* Unsigned cast ensures shift/mask insns are used. */ # define __sigmask(sig) \ - (((unsigned long int) 1) << ((unsigned)((sig) - 1) % (8 * sizeof (unsigned long int)))) + (((unsigned long) 1) << ((unsigned)((sig) - 1) % (8 * sizeof (unsigned long)))) /* Return the word index for SIG. */ -# define __sigword(sig) ((unsigned)((sig) - 1) / (8 * sizeof (unsigned long int))) +# define __sigword(sig) ((unsigned)((sig) - 1) / (8 * sizeof (unsigned long))) /* gcc 4.3.1 is not clever enough to optimize for _SIGSET_NWORDS == 1 and 2, * which are about the only values which can be there */ @@ -161,8 +170,8 @@ libc_hidden_proto(__sigdelset) _EXTERN_INLINE int \ NAME (CONST __sigset_t *__set, int __sig) \ { \ - unsigned long int __mask = __sigmask (__sig); \ - unsigned long int __word = __sigword (__sig); \ + unsigned long __mask = __sigmask (__sig); \ + unsigned long __word = __sigword (__sig); \ return BODY; \ } |