perf_event_open on ia32

set up performance monitoring

sys_perf_event_open(struct perf_event_attr *attr_uptr, pid_t pid, int cpu, int group_fd, unsigned long flags)

number	336 (0x150)
abi	i386
kconfig	`CONFIG_PERF_EVENTS`
entry point	`sys_perf_event_open`
since	Linux 3.3 or earlier (3.3 is the first release scanned for ia32)
man page	perf_event_open(2)
source	elixir.bootlin.com

Registers

register	value
`eax`	336, the syscall number
`ebx`	struct perf_event_attr *attr_uptr
`ecx`	pid_t pid
`edx`	int cpu
`esi`	int group_fd
`edi`	unsigned long flags
`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.