syscall.sh / microblaze / perf_event_open

perf_event_open

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)

register	value
`r12`	366, the syscall number
`r5`	struct perf_event_attr *attr_uptr
`r6`	pid_t pid
`r7`	int cpu
`r8`	int group_fd
`r9`	unsigned long flags
`r3`	the return value

Then run brki r14,8 to enter the kernel.

Same syscall on other architectures