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2014-08-18 Joel Sherrill <joel.sherrill@oarcorp.com> 

* libc/include/sys/signal.h: Add sigaltstack() support.
This commit is contained in:
Joel Sherrill 2014-08-18 14:03:35 +00:00
parent 697c710dc3
commit 6042d39486
2 changed files with 43 additions and 3 deletions
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4
newlib/ChangeLog
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@ -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.

42
newlib/libc/include/sys/signal.h
View File

@ -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