refactor: organize all arch related files together.

[lunaix-os.git] / lunaix-os / scripts / templates / i386 / i386_isrdef.c.j2

diff --git a/lunaix-os/scripts/templates/i386/i386_isrdef.c.j2 b/lunaix-os/scripts/templates/i386/i386_isrdef.c.j2
new file mode 100644 (file)
index 0000000..01ab639
--- /dev/null
+++ b/lunaix-os/scripts/templates/i386/i386_isrdef.c.j2
@@ -0,0 +1,29 @@
+#include "i386_intr.h"
+#include <lunaix/types.h>
+
+#define IDT_INTERRUPT 0x70
+#define KERNEL_CS 0x8
+#define IDT_ATTR(dpl, type) (((type) << 5) | ((dpl & 3) << 13) | (1 << 15))
+#define IDT_ENTRY 256
+
+#define DECLARE_ISR(iv) extern void _asm_isr##iv();
+
+#define ISR_INSTALL(idt, iv, isr)                                        \
+    _idt[iv] = ((ptr_t)isr & 0xffff0000) | IDT_ATTR(0, IDT_INTERRUPT);   \
+    _idt[iv] <<= 32;                                                     \
+    _idt[iv] |= (KERNEL_CS << 16) | ((ptr_t)isr & 0x0000ffff);           \
+
+u64_t _idt[IDT_ENTRY];
+u16_t _idt_limit = sizeof(_idt) - 1;
+
+{% for isrdef in data["exception"] -%}
+    DECLARE_ISR({{ isrdef["index"] }})
+{% endfor %}
+
+void
+exception_install_handler()
+{
+{% for isrdef in data["exception"] %}
+    ISR_INSTALL(_idt, {{ isrdef["index"] }}, _asm_isr{{ isrdef["index"] }})
+{% endfor %}
+}
\ No newline at end of file