brk on ia32

change data segment size

sys_brk(unsigned long brk)
number45 (0x2d)
abii386
entry pointsys_brk
sinceLinux 3.3 or earlier (3.3 is the first release scanned for ia32)
man pagebrk(2)
sourceelixir.bootlin.com

Registers

registervalue
eax45, the syscall number
ebxunsigned long brk
eaxthe 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.

Same syscall on other architectures

Get this as JSON: https://api.syscall.sh/v2/syscalls/ia32/brk