static int genregs_get()

in kernel/ptrace.c [36:70]

• 27 lines of code
• 1 McCabe index (conditional complexity)

static int genregs_get(struct task_struct *target,
		   const struct user_regset *regset,
		   struct membuf to)
{
	struct pt_regs *regs = task_pt_regs(target);

	/* The general idea here is that the copyout must happen in
	 * exactly the same order in which the userspace expects these
	 * regs. Now, the sequence in userspace does not match the
	 * sequence in the kernel, so everything past the 32 gprs
	 * happens one at a time.
	 */
	membuf_write(&to, &regs->r00, 32*sizeof(unsigned long));
	/* Must be exactly same sequence as struct user_regs_struct */
	membuf_store(&to, regs->sa0);
	membuf_store(&to, regs->lc0);
	membuf_store(&to, regs->sa1);
	membuf_store(&to, regs->lc1);
	membuf_store(&to, regs->m0);
	membuf_store(&to, regs->m1);
	membuf_store(&to, regs->usr);
	membuf_store(&to, regs->preds);
	membuf_store(&to, regs->gp);
	membuf_store(&to, regs->ugp);
	membuf_store(&to, pt_elr(regs)); // pc
	membuf_store(&to, (unsigned long)pt_cause(regs)); // cause
	membuf_store(&to, pt_badva(regs)); // badva
#if CONFIG_HEXAGON_ARCH_VERSION >=4
	membuf_store(&to, regs->cs0);
	membuf_store(&to, regs->cs1);
	return membuf_zero(&to, sizeof(unsigned long));
#else
	return membuf_zero(&to, 3 * sizeof(unsigned long));
#endif
}