From 912d2e3c7eb1baa71dda2c0a28aa5809eaa96f27 Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Sat, 16 Jul 2022 13:33:00 +0200
Subject: amd64: barely boot into kernel code
---
src/kernel/arch/amd64/interrupts/isr.c | 48 ++++++++++++++++++++++++++++++++++
1 file changed, 48 insertions(+)
create mode 100644 src/kernel/arch/amd64/interrupts/isr.c
(limited to 'src/kernel/arch/amd64/interrupts/isr.c')
diff --git a/src/kernel/arch/amd64/interrupts/isr.c b/src/kernel/arch/amd64/interrupts/isr.c
new file mode 100644
index 0000000..b55bc8b
--- /dev/null
+++ b/src/kernel/arch/amd64/interrupts/isr.c
@@ -0,0 +1,48 @@
+#include <kernel/arch/amd64/driver/ps2.h>
+#include <kernel/arch/amd64/driver/serial.h>
+#include <kernel/arch/amd64/interrupts/irq.h>
+#include <kernel/arch/amd64/interrupts/isr.h>
+#include <kernel/arch/amd64/port_io.h>
+#include <kernel/arch/generic.h>
+#include <kernel/panic.h>
+#include <kernel/proc.h>
+#include <stdbool.h>
+#include <stdint.h>
+
+bool isr_test_interrupt_called = false;
+
+void isr_stage3(int interrupt, uint64_t *stackframe) {
+ if (interrupt == 0xe) stackframe++;
+ kprintf("interrupt %x, rip = k/%08x, cs 0x%x\n", interrupt, stackframe[0], stackframe[1]);
+ switch (interrupt) {
+ case 0x08: // double fault
+ kprintf("#DF");
+ panic_invalid_state();
+
+ case 0xe:
+ uint64_t addr = 0x69;
+ asm("mov %%cr2, %0" : "=r"(addr));
+ kprintf("error code 0x%x, addr 0x%x\n", stackframe[-1], addr);
+ panic_unimplemented();
+
+ case 0x34:
+ asm("nop" ::: "memory");
+ isr_test_interrupt_called = true;
+ return;
+
+ case 0x21: // keyboard irq
+ ps2_recv(port_in8(0x60));
+ irq_eoi(1);
+ return;
+
+ case 0x24: // COM1 irq
+ serial_irq();
+ irq_eoi(1);
+ return;
+
+ default:
+ // TODO check if the exception was in the kernel
+ process_kill(process_current, interrupt);
+ process_switch_any();
+ }
+}
--
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