syscall.sh / x86 / ioperm
ioperm
set I/O port permissions
sys_ioperm(unsigned long from, unsigned long num, int turn_on)| number | 101 (0x65) |
|---|---|
| abi | i386 |
| entry point | sys_ioperm |
| since | Linux 3.3 |
| man page | ioperm(2) |
| source | elixir.bootlin.com |
Registers
| register | value |
|---|---|
eax | 101, the syscall number |
ebx | unsigned long from |
ecx | unsigned long num |
edx | int turn_on |
eax | the return value |
Then run int 0x80 to enter the kernel.
Same syscall on other architectures
Get this as JSON: https://api.syscall.sh/v2/syscalls/x86/ioperm