oldstat on ia32

get file status

sys_stat(const char *filename, struct __old_kernel_stat *statbuf)

number	18 (0x12)
abi	i386
entry point	`sys_stat`
since	Linux 3.3 or earlier (3.3 is the first release scanned for ia32)
man page	oldstat(2)
source	elixir.bootlin.com

Registers

register	value
`eax`	18, the syscall number
`ebx`	const char *filename
`ecx`	struct __old_kernel_stat *statbuf
`eax`	the return value

Then run int 0x80 to enter the kernel.

This compat ABI is only available when the kernel is built with CONFIG_IA32_EMULATION.