void show_registers()

in kernel/traps.c [840:927]
85 lines of code
13 McCabe index (conditional complexity)

void show_registers(struct pt_regs *regs)
{
	struct frame *fp = (struct frame *)regs;
	u16 c, *cp;
	unsigned long addr;
	int i;

	print_modules();
	pr_info("PC: [<%08lx>] %pS\n", regs->pc, (void *)regs->pc);
	pr_info("SR: %04x  SP: %p  a2: %08lx\n", regs->sr, regs, regs->a2);
	pr_info("d0: %08lx    d1: %08lx    d2: %08lx    d3: %08lx\n",
	       regs->d0, regs->d1, regs->d2, regs->d3);
	pr_info("d4: %08lx    d5: %08lx    a0: %08lx    a1: %08lx\n",
	       regs->d4, regs->d5, regs->a0, regs->a1);

	pr_info("Process %s (pid: %d, task=%p)\n",
		current->comm, task_pid_nr(current), current);
	addr = (unsigned long)&fp->un;
	pr_info("Frame format=%X ", regs->format);
	switch (regs->format) {
	case 0x2:
		pr_cont("instr addr=%08lx\n", fp->un.fmt2.iaddr);
		addr += sizeof(fp->un.fmt2);
		break;
	case 0x3:
		pr_cont("eff addr=%08lx\n", fp->un.fmt3.effaddr);
		addr += sizeof(fp->un.fmt3);
		break;
	case 0x4:
		if (CPU_IS_060)
			pr_cont("fault addr=%08lx fslw=%08lx\n",
				fp->un.fmt4.effaddr, fp->un.fmt4.pc);
		else
			pr_cont("eff addr=%08lx pc=%08lx\n",
				fp->un.fmt4.effaddr, fp->un.fmt4.pc);
		addr += sizeof(fp->un.fmt4);
		break;
	case 0x7:
		pr_cont("eff addr=%08lx ssw=%04x faddr=%08lx\n",
			fp->un.fmt7.effaddr, fp->un.fmt7.ssw, fp->un.fmt7.faddr);
		pr_info("wb 1 stat/addr/data: %04x %08lx %08lx\n",
			fp->un.fmt7.wb1s, fp->un.fmt7.wb1a, fp->un.fmt7.wb1dpd0);
		pr_info("wb 2 stat/addr/data: %04x %08lx %08lx\n",
			fp->un.fmt7.wb2s, fp->un.fmt7.wb2a, fp->un.fmt7.wb2d);
		pr_info("wb 3 stat/addr/data: %04x %08lx %08lx\n",
			fp->un.fmt7.wb3s, fp->un.fmt7.wb3a, fp->un.fmt7.wb3d);
		pr_info("push data: %08lx %08lx %08lx %08lx\n",
			fp->un.fmt7.wb1dpd0, fp->un.fmt7.pd1, fp->un.fmt7.pd2,
			fp->un.fmt7.pd3);
		addr += sizeof(fp->un.fmt7);
		break;
	case 0x9:
		pr_cont("instr addr=%08lx\n", fp->un.fmt9.iaddr);
		addr += sizeof(fp->un.fmt9);
		break;
	case 0xa:
		pr_cont("ssw=%04x isc=%04x isb=%04x daddr=%08lx dobuf=%08lx\n",
			fp->un.fmta.ssw, fp->un.fmta.isc, fp->un.fmta.isb,
			fp->un.fmta.daddr, fp->un.fmta.dobuf);
		addr += sizeof(fp->un.fmta);
		break;
	case 0xb:
		pr_cont("ssw=%04x isc=%04x isb=%04x daddr=%08lx dobuf=%08lx\n",
			fp->un.fmtb.ssw, fp->un.fmtb.isc, fp->un.fmtb.isb,
			fp->un.fmtb.daddr, fp->un.fmtb.dobuf);
		pr_info("baddr=%08lx dibuf=%08lx ver=%x\n",
			fp->un.fmtb.baddr, fp->un.fmtb.dibuf, fp->un.fmtb.ver);
		addr += sizeof(fp->un.fmtb);
		break;
	default:
		pr_cont("\n");
	}
	show_stack(NULL, (unsigned long *)addr, KERN_INFO);

	pr_info("Code:");
	cp = (u16 *)regs->pc;
	for (i = -8; i < 16; i++) {
		if (get_kernel_nofault(c, cp + i) && i >= 0) {
			pr_cont(" Bad PC value.");
			break;
		}
		if (i)
			pr_cont(" %04x", c);
		else
			pr_cont(" <%04x>", c);
	}
	pr_cont("\n");
}