Architectural Support: x86_64 (#37)

[lunaix-os.git] / lunaix-os / arch / x86 / arch.c

diff --git a/lunaix-os/arch/x86/arch.c b/lunaix-os/arch/x86/arch.c
new file mode 100644 (file)
index 0000000..988f976
--- /dev/null
+++ b/lunaix-os/arch/x86/arch.c
@@ -0,0 +1,56 @@
+#include <hal/hwtimer.h>
+
+#include <lunaix/generic/isrm.h>
+#include <lunaix/spike.h>
+#include <lunaix/process.h>
+
+#include "sys/int_handler.h"
+#include "sys/x86_isa.h"
+#include "sys/hart.h"
+
+#include "hal/apic_timer.h"
+
+void
+exception_init()
+{
+    exception_install_handler();
+    isrm_init();
+    intr_routine_init();
+}
+
+extern void
+syscall_hndlr(const struct hart_state* hstate);
+
+void
+arch_preinit()
+{
+    exception_init();
+
+    isrm_bindiv(LUNAIX_SYS_CALL, syscall_hndlr);
+}
+
+struct hwtimer*
+select_platform_timer()
+{
+    struct hwtimer* timer;
+
+    timer = apic_hwtimer_context();
+    if (timer->supported(timer)) {
+        return timer;
+    }
+
+    // TODO select alternatives...
+
+    panick("no timer to use.");
+}
+
+void
+update_tss()
+{
+    extern struct x86_tss _tss;
+#ifdef CONFIG_ARCH_X86_64
+    _tss.rsps[0] = (ptr_t)current_thread->hstate;
+#else
+    _tss.esp0 = (u32_t)current_thread->hstate;
+#endif
+}
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