Test firmware refactoring

1 files changed, 111 insertions, 0 deletions

diff --git a/firmware/irq.c b/firmware/irq.c
new file mode 100644
index 0000000..e49ef47
--- /dev/null
+++ b/firmware/irq.c
@@ -0,0 +1,111 @@
+
+#include "firmware.h"
+
+uint32_t *irq(uint32_t *regs, uint32_t irqs)
+{
+	static int ext_irq_4_count = 0;
+	static int ext_irq_5_count = 0;
+	static int timer_irq_count = 0;
+
+	if ((irqs & (1<<4)) != 0) {
+		ext_irq_4_count++;
+		// print_str("[EXT-IRQ-4]");
+	}
+
+	if ((irqs & (1<<5)) != 0) {
+		ext_irq_5_count++;
+		// print_str("[EXT-IRQ-5]");
+	}
+
+	if ((irqs & 1) != 0) {
+		timer_irq_count++;
+		// print_str("[TIMER-IRQ]");
+	}
+
+	if ((irqs & 6) != 0)
+	{
+		int i, k;
+		uint32_t pc = regs[0] - 4;
+		uint32_t instr = *(uint32_t*)pc;
+
+		print_str("\n");
+		print_str("------------------------------------------------------------\n");
+
+		if ((irqs & 2) != 0) {
+			if (instr == 0x00100073) {
+				print_str("SBREAK instruction at 0x");
+				print_hex(pc);
+				print_str("\n");
+			} else {
+				print_str("Illegal Instruction at 0x");
+				print_hex(pc);
+				print_str(": 0x");
+				print_hex(instr);
+				print_str("\n");
+			}
+		}
+
+		if ((irqs & 4) != 0) {
+			print_str("Bus error in Instruction at 0x");
+			print_hex(pc);
+			print_str(": 0x");
+			print_hex(instr);
+			print_str("\n");
+		}
+
+		for (i = 0; i < 8; i++)
+		for (k = 0; k < 4; k++)
+		{
+			int r = i + k*8;
+
+			if (r == 0) {
+				print_str("pc  ");
+			} else
+			if (r < 10) {
+				print_chr('x');
+				print_chr('0' + r);
+				print_chr(' ');
+				print_chr(' ');
+			} else
+			if (r < 20) {
+				print_chr('x');
+				print_chr('1');
+				print_chr('0' + r - 10);
+				print_chr(' ');
+			} else
+			if (r < 30) {
+				print_chr('x');
+				print_chr('2');
+				print_chr('0' + r - 20);
+				print_chr(' ');
+			} else {
+				print_chr('x');
+				print_chr('3');
+				print_chr('0' + r - 30);
+				print_chr(' ');
+			}
+
+			print_hex(regs[r]);
+			print_str(k == 3 ? "\n" : "    ");
+		}
+
+		print_str("------------------------------------------------------------\n");
+
+		print_str("Number of fast external IRQs counted: ");
+		print_dec(ext_irq_4_count);
+		print_str("\n");
+
+		print_str("Number of slow external IRQs counted: ");
+		print_dec(ext_irq_5_count);
+		print_str("\n");
+
+		print_str("Number of timer IRQs counted: ");
+		print_dec(timer_irq_count);
+		print_str("\n");
+
+		__asm__("sbreak");
+	}
+
+	return regs;
+}
+