syscall.sh / nios2 / semctl
semctl
System V semaphore control operations
sys_semctl(int semid, int semnum, int cmd, unsigned long arg)| number | 191 (0xbf) |
|---|---|
| abi | common |
| entry point | sys_semctl |
| since | Linux 3.19 |
| man page | semctl(2) |
| source | elixir.bootlin.com |
Registers
| register | value |
|---|---|
r2 | 191, the syscall number |
r4 | int semid |
r5 | int semnum |
r6 | int cmd |
r7 | unsigned long arg |
r2 | the return value |
Then run trap to enter the kernel.
Same syscall on other architectures
- x64 66
- x86 394
- arm64 191
- arm 300
- riscv64 191
- x32 1073741890
- loongarch64 191
- ppc64 394
- ppc 394
- s390x 394
- mips64 5064
- mipsn32 6064
- mipso32 4394
- alpha 204
- arc 191
- csky 191
- hexagon 191
- m68k 394
- microblaze 328
- openrisc 191
- parisc 187
- sh 394
- sparc 394
- sparc64 394
- xtensa 164
Get this as JSON: https://api.syscall.sh/v2/syscalls/nios2/semctl