refactor: decouple i386 specific instruction invocation

[lunaix-os.git] / lunaix-os / kernel / asm / i386 / interrupts.c

diff --git a/lunaix-os/kernel/asm/i386/interrupts.c b/lunaix-os/kernel/asm/i386/interrupts.c
new file mode 100644 (file)
index 0000000..17bde71
--- /dev/null
+++ b/lunaix-os/kernel/asm/i386/interrupts.c
@@ -0,0 +1,47 @@
+#include <arch/i386/interrupts.h>
+#include <arch/i386/tss.h>
+
+#include <hal/apic.h>
+#include <hal/cpu.h>
+
+#include <lunaix/isrm.h>
+#include <lunaix/mm/page.h>
+#include <lunaix/mm/vmm.h>
+#include <lunaix/process.h>
+#include <lunaix/sched.h>
+#include <lunaix/syslog.h>
+#include <lunaix/tty/tty.h>
+
+LOG_MODULE("INTR")
+
+extern x86_page_table* __kernel_ptd;
+
+void
+intr_handler(isr_param* param)
+{
+    param->execp->saved_prev_ctx = __current->intr_ctx;
+    __current->intr_ctx = param;
+
+    volatile struct exec_param* execp = __current->intr_ctx->execp;
+
+    if (execp->vector <= 255) {
+        isr_cb subscriber = isrm_get(execp->vector);
+        subscriber(param);
+        goto done;
+    }
+
+    kprint_panic("INT %u: (%x) [%p: %p] Unknown",
+                 execp->vector,
+                 execp->err_code,
+                 execp->cs,
+                 execp->eip);
+
+done:
+    // for all external interrupts except the spurious interrupt
+    //  this is required by Intel Manual Vol.3A, section 10.8.1 & 10.8.5
+    if (execp->vector >= IV_EX && execp->vector != APIC_SPIV_IV) {
+        apic_done_servicing();
+    }
+
+    return;
+}
\ No newline at end of file