diff options
| author | Joel Sherrill <joel.sherrill@oarcorp.com> | 2014-08-18 18:03:35 +0400 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@oarcorp.com> | 2014-08-18 18:03:35 +0400 |
| commit | 6042d39486815f8592f0efc2b72c8782835cd063 (patch) | |
| tree | 7a9b3d35447ea1a27063d8bbdc953c75d7b567d7 /newlib | |
| parent | 697c710dc305dca3f3674769a735cb62cf7eba92 (diff) | |
2014-08-18 Joel Sherrill <joel.sherrill@oarcorp.com>
* libc/include/sys/signal.h: Add sigaltstack() support.
Diffstat (limited to 'newlib')
| -rw-r--r-- | newlib/ChangeLog | 4 | ||||
| -rw-r--r-- | newlib/libc/include/sys/signal.h | 42 |
2 files changed, 43 insertions, 3 deletions
diff --git a/newlib/ChangeLog b/newlib/ChangeLog index 54edfae6c..2fbd48010 100644 --- a/newlib/ChangeLog +++ b/newlib/ChangeLog @@ -1,3 +1,7 @@ +2014-08-18 Joel Sherrill <joel.sherrill@oarcorp.com> + + * libc/include/sys/signal.h: Add sigaltstack() support. + 2014-08-14 Bin Cheng <bin.cheng@arm.com> * libc/stdio/findfp.c (std): Don't inline when optimizing for code size. diff --git a/newlib/libc/include/sys/signal.h b/newlib/libc/include/sys/signal.h index 3d6ba0831..bbc2cd988 100644 --- a/newlib/libc/include/sys/signal.h +++ b/newlib/libc/include/sys/signal.h @@ -71,9 +71,12 @@ typedef struct { /* 3.3.8 Synchronously Accept a Signal, P1003.1b-1993, p. 76 */ -#define SA_NOCLDSTOP 1 /* Do not generate SIGCHLD when children stop */ -#define SA_SIGINFO 2 /* Invoke the signal catching function with */ - /* three arguments instead of one. */ +#define SA_NOCLDSTOP 0x1 /* Do not generate SIGCHLD when children stop */ +#define SA_SIGINFO 0x2 /* Invoke the signal catching function with */ + /* three arguments instead of one. */ +#if __BSD_VISIBLE || __XSI_VISIBLE || __POSIX_VISIBLE >= 200112 +#define SA_ONSTACK 0x4 /* Signal delivery will be on a separate stack. */ +#endif /* struct sigaction notes from POSIX: * @@ -104,6 +107,34 @@ struct sigaction { #define sa_sigaction _signal_handlers._sigaction #endif +#if __BSD_VISIBLE || __XSI_VISIBLE || __POSIX_VISIBLE >= 200112 +/* + * Minimum and default signal stack constants. Allow for target overrides + * from <sys/features.h>. + */ +#ifndef MINSIGSTKSZ +#define MINSIGSTKSZ 2048 +#endif +#ifndef SIGSTKSZ +#define SIGSTKSZ 8192 +#endif + +/* + * Possible values for ss_flags in stack_t below. + */ +#define SS_ONSTACK 0x1 +#define SS_DISABLE 0x2 + +/* + * Structure used in sigaltstack call. + */ +typedef struct sigaltstack { + void *ss_sp; /* Stack base or pointer. */ + int ss_flags; /* Flags. */ + size_t ss_size; /* Stack size. */ +} stack_t; +#endif + #elif defined(__CYGWIN__) #include <cygwin/signal.h> #else @@ -161,6 +192,11 @@ int _EXFUN(sigpending, (sigset_t *)); int _EXFUN(sigsuspend, (const sigset_t *)); int _EXFUN(sigpause, (int)); + +#if __BSD_VISIBLE || __XSI_VISIBLE || __POSIX_VISIBLE >= 200112 +int _EXFUN(sigaltstack, (const stack_t *__restrict, stack_t *__restrict)); +#endif + #if defined(_POSIX_THREADS) #ifdef __CYGWIN__ # ifndef _CYGWIN_TYPES_H |