void nommu_dump_state()

in kernel/traps.c [123:197]

• 65 lines of code
• 9 McCabe index (conditional complexity)

void nommu_dump_state(struct pt_regs *regs,
		      unsigned long ea, unsigned long vector)
{
	int i;
	unsigned long addr, stack = regs->sp;

	printk("\n\r[nommu_dump_state] :: ea %lx, vector %lx\n\r", ea, vector);

	printk("CPU #: %d\n"
	       "   PC: %08lx    SR: %08lx    SP: %08lx\n",
	       0, regs->pc, regs->sr, regs->sp);
	printk("GPR00: %08lx GPR01: %08lx GPR02: %08lx GPR03: %08lx\n",
	       0L, regs->gpr[1], regs->gpr[2], regs->gpr[3]);
	printk("GPR04: %08lx GPR05: %08lx GPR06: %08lx GPR07: %08lx\n",
	       regs->gpr[4], regs->gpr[5], regs->gpr[6], regs->gpr[7]);
	printk("GPR08: %08lx GPR09: %08lx GPR10: %08lx GPR11: %08lx\n",
	       regs->gpr[8], regs->gpr[9], regs->gpr[10], regs->gpr[11]);
	printk("GPR12: %08lx GPR13: %08lx GPR14: %08lx GPR15: %08lx\n",
	       regs->gpr[12], regs->gpr[13], regs->gpr[14], regs->gpr[15]);
	printk("GPR16: %08lx GPR17: %08lx GPR18: %08lx GPR19: %08lx\n",
	       regs->gpr[16], regs->gpr[17], regs->gpr[18], regs->gpr[19]);
	printk("GPR20: %08lx GPR21: %08lx GPR22: %08lx GPR23: %08lx\n",
	       regs->gpr[20], regs->gpr[21], regs->gpr[22], regs->gpr[23]);
	printk("GPR24: %08lx GPR25: %08lx GPR26: %08lx GPR27: %08lx\n",
	       regs->gpr[24], regs->gpr[25], regs->gpr[26], regs->gpr[27]);
	printk("GPR28: %08lx GPR29: %08lx GPR30: %08lx GPR31: %08lx\n",
	       regs->gpr[28], regs->gpr[29], regs->gpr[30], regs->gpr[31]);
	printk("  RES: %08lx oGPR11: %08lx\n",
	       regs->gpr[11], regs->orig_gpr11);

	printk("Process %s (pid: %d, stackpage=%08lx)\n",
	       ((struct task_struct *)(__pa(current)))->comm,
	       ((struct task_struct *)(__pa(current)))->pid,
	       (unsigned long)current);

	printk("\nStack: ");
	printk("Stack dump [0x%08lx]:\n", (unsigned long)stack);
	for (i = 0; i < kstack_depth_to_print; i++) {
		if (((long)stack & (THREAD_SIZE - 1)) == 0)
			break;
		stack++;

		printk("%lx :: sp + %02d: 0x%08lx\n", stack, i * 4,
		       *((unsigned long *)(__pa(stack))));
	}
	printk("\n");

	printk("Call Trace:   ");
	i = 1;
	while (((long)stack & (THREAD_SIZE - 1)) != 0) {
		addr = *((unsigned long *)__pa(stack));
		stack++;

		if (kernel_text_address(addr)) {
			if (i && ((i % 6) == 0))
				printk("\n ");
			printk(" [<%08lx>]", addr);
			i++;
		}
	}
	printk("\n");

	printk("\nCode: ");

	for (i = -24; i < 24; i++) {
		unsigned char c;
		c = ((unsigned char *)(__pa(regs->pc)))[i];

		if (i == 0)
			printk("(%02x) ", c);
		else
			printk("%02x ", c);
	}
	printk("\n");
}