physPageSize = val
		case _AT_TIMEKEEP:
			timekeepSharedPage = (*vdsoTimekeep)(unsafe.Pointer(val))
		}

		archauxv(tag, val)
	}
	return i / 2
}

// sysSigaction calls the sigaction system call.
//
//go:nosplit
func sysSigaction(sig uint32, new, old *sigactiont) {
	// Use system stack to avoid split stack overflow on amd64
	if asmSigaction(uintptr(sig), new, old) != 0 {
		systemstack(func() {

func setSignalstackSP(s *stackt, sp uintptr) {
	*(*uintptr)(unsafe.Pointer(&s.ss_sp)) = sp
}

//go:nosplit
func (c *sigctxt) fixsigcode(sig uint32) {
}

// sysSigaction calls the rt_sigaction system call.
//
//go:nosplit
func sysSigaction(sig uint32, new, old *sigactiont) {
	if rt_sigaction(uintptr(sig), new, old, unsafe.Sizeof(sigactiont{}.sa_mask)) != 0 {
		// Workaround for bugs in QEMU user mode emulation.
		//

	SYS_GETEGID        = 43  // { gid_t sys_getegid(void); }
	SYS_PROFIL         = 44  // { int sys_profil(caddr_t samples, size_t size, \
	SYS_KTRACE         = 45  // { int sys_ktrace(const char *fname, int ops, \
	SYS_SIGACTION      = 46  // { int sys_sigaction(int signum, \
	SYS_GETGID         = 47  // { gid_t sys_getgid(void); }
	SYS_SIGPROCMASK    = 48  // { int sys_sigprocmask(int how, sigset_t mask); }

	SYS_GETEGID        = 43  // { gid_t sys_getegid(void); }
	SYS_PROFIL         = 44  // { int sys_profil(caddr_t samples, size_t size, \
	SYS_KTRACE         = 45  // { int sys_ktrace(const char *fname, int ops, \
	SYS_SIGACTION      = 46  // { int sys_sigaction(int signum, \
	SYS_GETGID         = 47  // { gid_t sys_getgid(void); }
	SYS_SIGPROCMASK    = 48  // { int sys_sigprocmask(int how, sigset_t mask); }

	SYS_CHROOT                  = 61
	SYS_USTAT                   = 62
	SYS_DUP2                    = 63
	SYS_GETPPID                 = 64
	SYS_GETPGRP                 = 65
	SYS_SETSID                  = 66
	SYS_SIGACTION               = 67
	SYS_SIGSUSPEND              = 72
	SYS_SIGPENDING              = 73
	SYS_SETHOSTNAME             = 74
	SYS_SETRLIMIT               = 75
	SYS_GETRUSAGE               = 77

	SYS_REMAP_FILE_PAGES        = 192
	SYS_EPOLL_CREATE            = 193
	SYS_EPOLL_CTL               = 194
	SYS_EPOLL_WAIT              = 195
	SYS_IOPRIO_SET              = 196
	SYS_GETPPID                 = 197
	SYS_SIGACTION               = 198
	SYS_SGETMASK                = 199
	SYS_SSETMASK                = 200
	SYS_SIGSUSPEND              = 201
	SYS_OLDLSTAT                = 202
	SYS_USELIB                  = 203

	SYS_USTAT                        = 62
	SYS_DUP2                         = 63
	SYS_GETPPID                      = 64
	SYS_GETPGRP                      = 65
	SYS_SETSID                       = 66
	SYS_SIGACTION                    = 67
	SYS_SETREUID                     = 70
	SYS_SETREGID                     = 71
	SYS_SIGSUSPEND                   = 72
	SYS_SIGPENDING                   = 73
	SYS_SETHOSTNAME                  = 74

	SYS_USTAT                        = 4062
	SYS_DUP2                         = 4063
	SYS_GETPPID                      = 4064
	SYS_GETPGRP                      = 4065
	SYS_SETSID                       = 4066
	SYS_SIGACTION                    = 4067
	SYS_SGETMASK                     = 4068
	SYS_SSETMASK                     = 4069
	SYS_SETREUID                     = 4070
	SYS_SETREGID                     = 4071

	SYS_PROFIL         = 44  // { int sys_profil(caddr_t samples, size_t size, u_long offset, u_int scale); }
	SYS_KTRACE         = 45  // { int sys_ktrace(const char *fname, int ops, int facs, pid_t pid); }
	SYS_SIGACTION      = 46  // { int sys_sigaction(int signum, const struct sigaction *nsa, struct sigaction *osa); }
	SYS_GETGID         = 47  // { gid_t sys_getgid(void); }
	SYS_SIGPROCMASK    = 48  // { int sys_sigprocmask(int how, sigset_t mask); }

	SYS_KILL                           = 37
	SYS_GETPPID                        = 39
	SYS_DUP                            = 41
	SYS_PIPE                           = 42
	SYS_GETEGID                        = 43
	SYS_SIGACTION                      = 46
	SYS_GETGID                         = 47
	SYS_SIGPROCMASK                    = 48
	SYS_GETLOGIN                       = 49
	SYS_SETLOGIN                       = 50