diff options
Diffstat (limited to 'include/asm-mips/signal.h')
| -rw-r--r-- | include/asm-mips/signal.h | 81 |
1 files changed, 48 insertions, 33 deletions
diff --git a/include/asm-mips/signal.h b/include/asm-mips/signal.h index 7bdf024e5..0f5988610 100644 --- a/include/asm-mips/signal.h +++ b/include/asm-mips/signal.h @@ -7,17 +7,22 @@ * * Copyright (C) 1995, 1996, 1997 by Ralf Baechle * - * $Id: signal.h,v 1.2 1997/09/07 05:27:50 ralf Exp $ + * $Id: signal.h,v 1.3 1997/12/14 18:57:19 ralf Exp $ */ #ifndef __ASM_MIPS_SIGNAL_H #define __ASM_MIPS_SIGNAL_H -#include <asm/sgidefs.h> +#include <linux/types.h> -typedef unsigned long sigset_t; +#define _NSIG 128 +#define _NSIG_BPW 32 +#define _NSIG_WORDS (_NSIG / _NSIG_BPW) -#define _NSIG 32 -#define NSIG _NSIG +typedef struct { + unsigned long sig[_NSIG_WORDS]; +} sigset_t; + +typedef unsigned long old_sigset_t; /* at least 32 bits */ #define SIGHUP 1 /* Hangup (POSIX). */ #define SIGINT 2 /* Interrupt (ANSI). */ @@ -54,34 +59,48 @@ typedef unsigned long sigset_t; #define SIGXCPU 30 /* CPU limit exceeded (4.2 BSD). */ #define SIGXFSZ 31 /* File size limit exceeded (4.2 BSD). */ +/* These should not be considered constants from userland. */ +#define SIGRTMIN 32 +#define SIGRTMAX (_NSIG-1) + /* - * sa_flags values: SA_STACK is not currently supported, but will allow the - * usage of signal stacks by using the (now obsolete) sa_restorer field in - * the sigaction structure as a stack pointer. This is now possible due to - * the changes in signal handling. LBT 010493. + * SA_FLAGS values: + * + * SA_ONSTACK is not currently supported, but will allow sigaltstack(2). * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the * SA_RESTART flag to get restarting signals (which were the default long ago) - * SA_SHIRQ flag is for shared interrupt support on PCI and EISA. + * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop. + * SA_RESETHAND clears the handler when the signal is delivered. + * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies. + * SA_NODEFER prevents the current signal from being masked in the handler. + * + * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single + * Unix names RESETHAND and NODEFER respectively. */ -#define SA_STACK 0x1 -#define SA_ONSTACK SA_STACK -#define SA_RESTART 0x4 -#define SA_NOCLDSTOP 0x20000 -/* Non ABI signals */ -#define SA_INTERRUPT 0x01000000 -#define SA_NOMASK 0x02000000 -#define SA_ONESHOT 0x04000000 -#define SA_SHIRQ 0x08000000 +#define SA_STACK 0x00000001 +#define SA_RESETHAND 0x00000002 +#define SA_RESTART 0x00000004 +#define SA_SIGINFO 0x00000008 +#define SA_NODEFER 0x00000010 +#define SA_NOCLDWAIT 0x00010000 /* Not supported yet */ +#define SA_NOCLDSTOP 0x00020000 + +#define SA_NOMASK SA_NODEFER /* DANGER: was 0x02000000 */ +#define SA_ONESHOT SA_RESETHAND /* DANGER: was 0x04000000 */ #ifdef __KERNEL__ /* * These values of sa_flags are used only by the kernel as part of the * irq handling routines. * - * SA_INTERRUPT is also used by the irq handling routines. + * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the + * SA_RESTART flag to get restarting signals (which were the default long ago) + * SA_SHIRQ flag is for shared interrupt support on PCI and EISA. */ -#define SA_PROBE SA_ONESHOT -#define SA_SAMPLE_RANDOM SA_RESTART +#define SA_INTERRUPT 0x01000000 /* interrupt handling */ +#define SA_SHIRQ 0x08000000 +#define SA_PROBE SA_ONESHOT +#define SA_SAMPLE_RANDOM SA_RESTART #endif /* __KERNEL__ */ #define SIG_BLOCK 1 /* for blocking signals */ @@ -102,17 +121,13 @@ struct sigaction { unsigned int sa_flags; __sighandler_t sa_handler; sigset_t sa_mask; - unsigned int __pad0[3]; /* reserved, keep size constant */ - - /* Abi says here follows reserved int[2] */ - void (*sa_restorer)(void); -#if (_MIPS_ISA == _MIPS_ISA_MIPS1) || (_MIPS_ISA == _MIPS_ISA_MIPS2) - /* - * For 32 bit code we have to pad struct sigaction to get - * constant size for the ABI - */ - int __pad1[1]; /* reserved */ -#endif + int sa_resv[2]; /* reserved */ +}; + +/* XXX use sa_rev for storing ka_restorer */ +struct k_sigaction { + struct sigaction sa; + void (*ka_restorer)(void); }; #ifdef __KERNEL__ |