diff options
Diffstat (limited to 'mdk-stage1/dietlibc/x86_64/sigaction.c')
-rw-r--r-- | mdk-stage1/dietlibc/x86_64/sigaction.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/x86_64/sigaction.c b/mdk-stage1/dietlibc/x86_64/sigaction.c new file mode 100644 index 000000000..18f32efde --- /dev/null +++ b/mdk-stage1/dietlibc/x86_64/sigaction.c @@ -0,0 +1,26 @@ +#include <signal.h> +#include <stdlib.h> +#include <string.h> +#include <syscalls.h> + +int __rt_sigaction(int signum, const struct sigaction *act, struct sigaction *oldact, long nr); + +static void restore_rt(void) { + asm volatile ("syscall" : : "a" (__NR_rt_sigreturn)); +} + +int __libc_sigaction(int signum, const struct sigaction *act, struct sigaction *oldact); +int __libc_sigaction(int signum, const struct sigaction *act, struct sigaction *oldact) { + struct sigaction *newact = (struct sigaction *)act; + if (act) { + newact = alloca(sizeof(*newact)); + newact->sa_handler = act->sa_handler; + newact->sa_flags = act->sa_flags | SA_RESTORER; + newact->sa_restorer = &restore_rt; + newact->sa_mask = act->sa_mask; + } + return __rt_sigaction(signum, newact, oldact, _NSIG/8); +} + +int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact) +__attribute__((weak,alias("__libc_sigaction"))); |