signalfd4 on metag

create a file descriptor for accepting signals

sys_signalfd4(int ufd, sigset_t *user_mask, size_t sizemask, int flags)
number74 (0x4a)
abicommon
kconfigCONFIG_SIGNALFD
entry pointsys_signalfd4
sinceLinux 3.9 or earlier (3.9 is the first release scanned for metag)
man pagesignalfd4(2)
sourceelixir.bootlin.com

Registers

registervalue
D1Re074, the syscall number
D1Ar1int ufd
D0Ar2sigset_t *user_mask
D1Ar3size_t sizemask
D0Ar4int flags
D0Re0the return value

Then run SWITCH #0x440001 to enter the kernel.

Values wider than one register are packed into consecutive arguments.

This architecture was removed from the Linux kernel in Linux 4.17. The newest release with a syscall table here is Linux 4.16. The other removed architectures live on the historical architectures page.

Same syscall on other architectures

Get this as JSON: https://api.syscall.sh/v2/syscalls/metag/signalfd4?kernel=all