msgsnd on score

System V message queue operations

sys_msgsnd(int msqid, struct msgbuf *msgp, size_t msgsz, int msgflg)
number189 (0xbd)
abicommon
kconfigCONFIG_SYSVIPC
familysysvipc see the whole family on score
entry pointsys_msgsnd
sinceLinux 3.7 or earlier (3.7 is the first release scanned for score)
man pagemsgsnd(2)
sourceelixir.bootlin.com

Registers

registervalue
r27189, the syscall number
r4int msqid
r5struct msgbuf *msgp
r6size_t msgsz
r7int msgflg
r4the return value

Then run syscall to enter the kernel.

r7 is the error flag and r4 then holds the positive error number.

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/score/msgsnd?kernel=all