musl/src/signal/siglongjmp.c

#include <setjmp.h>
#include <signal.h>
#include <stdlib.h>
#include "syscall.h"

void siglongjmp(sigjmp_buf buf, int ret)
{
	if (buf->__fl)
		__syscall(SYS_rt_sigprocmask, SIG_SETMASK, buf->__ss, 0, 8);
	longjmp(buf->__jb, ret);
}
initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00			`#include <setjmp.h>`
			`#include <signal.h>`
			`#include <stdlib.h>`
jmp_buf overhaul fixing several issues on arm, the location of the saved-signal-mask flag and mask were off by one between sigsetjmp and siglongjmp, causing incorrect behavior restoring the signal mask. this is because the siglongjmp code assumed an extra slot was in the non-sig jmp_buf for the flag, but arm did not have this. now, the extra slot is removed for all archs since it was useless. also, arm eabi requires jmp_buf to have 8-byte alignment. we achieve that using long long as the type rather than with non-portable gcc attribute tags. 2012-07-03 20:07:33 -04:00			`#include "syscall.h"`
initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00
			`void siglongjmp(sigjmp_buf buf, int ret)`
			`{`
jmp_buf overhaul fixing several issues on arm, the location of the saved-signal-mask flag and mask were off by one between sigsetjmp and siglongjmp, causing incorrect behavior restoring the signal mask. this is because the siglongjmp code assumed an extra slot was in the non-sig jmp_buf for the flag, but arm did not have this. now, the extra slot is removed for all archs since it was useless. also, arm eabi requires jmp_buf to have 8-byte alignment. we achieve that using long long as the type rather than with non-portable gcc attribute tags. 2012-07-03 20:07:33 -04:00			`if (buf->__fl)`
			`__syscall(SYS_rt_sigprocmask, SIG_SETMASK, buf->__ss, 0, 8);`
			`longjmp(buf->__jb, ret);`
initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00			`}`