in kernel/ptrace.c [88:99]
static int regs_get(struct task_struct *target,
const struct user_regset *regset,
struct membuf to)
{
int r;
BUILD_BUG_ON(sizeof(struct user_regs_struct) % sizeof(long) != 0);
for (r = 0; r < ELF_NGREG; r++)
membuf_store(&to, h8300_get_reg(target, r));
return 0;
}