void show_regs()

in kernel/troubleshoot.c [168:211]

• 31 lines of code
• 6 McCabe index (conditional complexity)

void show_regs(struct pt_regs *regs)
{
	struct task_struct *tsk = current;
	struct callee_regs *cregs = (struct callee_regs *)tsk->thread.callee_reg;

	/*
	 * generic code calls us with preemption disabled, but some calls
	 * here could sleep, so re-enable to avoid lockdep splat
	 */
	preempt_enable();

	print_task_path_n_nm(tsk);
	show_regs_print_info(KERN_INFO);

	show_ecr_verbose(regs);

	if (user_mode(regs))
		show_faulting_vma(regs->ret); /* faulting code, not data */

	pr_info("ECR: 0x%08lx EFA: 0x%08lx ERET: 0x%08lx\nSTAT: 0x%08lx",
		regs->event, current->thread.fault_address, regs->ret,
		regs->status32);

#define STS_BIT(r, bit)	r->status32 & STATUS_##bit##_MASK ? #bit" " : ""

#ifdef CONFIG_ISA_ARCOMPACT
	pr_cont(" [%2s%2s%2s%2s%2s%2s%2s]",
			(regs->status32 & STATUS_U_MASK) ? "U " : "K ",
			STS_BIT(regs, DE), STS_BIT(regs, AE),
			STS_BIT(regs, A2), STS_BIT(regs, A1),
			STS_BIT(regs, E2), STS_BIT(regs, E1));
#else
	pr_cont(" [%2s%2s%2s%2s]   ",
			STS_BIT(regs, IE),
			(regs->status32 & STATUS_U_MASK) ? "U " : "K ",
			STS_BIT(regs, DE), STS_BIT(regs, AE));
#endif

	print_regs_scratch(regs);
	if (cregs)
		print_regs_callee(cregs);

	preempt_disable();
}