1 files changed, 68 insertions, 0 deletions
diff --git a/sys/arch/amd64/machdep.c b/sys/arch/amd64/machdep.c
new file mode 100644
index 0000000..dd2cdc7
--- /dev/null
+++ b/sys/arch/amd64/machdep.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2023 Ian Marco Moffett and the VegaOS team.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of VegaOS nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* $Id$ */
+
+#include <sys/machdep.h>
+#include <sys/cdefs.h>
+#include <machine/trap.h>
+#include <machine/idt.h>
+
+#define ISR(func) ((uintptr_t)func)
+
+__weak void
+interrupts_init(struct processor *processor)
+{
+    __USE(processor);
+    idt_set_desc(0x0, IDT_TRAP_GATE_FLAGS, ISR(arith_err), 0);
+    idt_set_desc(0x2, IDT_TRAP_GATE_FLAGS, ISR(nmi), 0);
+    idt_set_desc(0x3, IDT_TRAP_GATE_FLAGS, ISR(breakpoint_handler), 0);
+    idt_set_desc(0x4, IDT_TRAP_GATE_FLAGS, ISR(overflow), 0);
+    idt_set_desc(0x5, IDT_TRAP_GATE_FLAGS, ISR(bound_range), 0);
+    idt_set_desc(0x6, IDT_TRAP_GATE_FLAGS, ISR(invl_op), 0);
+    idt_set_desc(0x8, IDT_TRAP_GATE_FLAGS, ISR(double_fault), 0);
+    idt_set_desc(0xA, IDT_TRAP_GATE_FLAGS, ISR(invl_tss), 0);
+    idt_set_desc(0xB, IDT_TRAP_GATE_FLAGS, ISR(segnp), 0);
+    idt_set_desc(0xD, IDT_TRAP_GATE_FLAGS, ISR(general_prot), 0);
+    idt_set_desc(0xE, IDT_TRAP_GATE_FLAGS, ISR(page_fault), 0);
+    idt_load();
+}
+
+void
+processor_halt(void)
+{
+    __ASMV("cli; hlt");
+}
+
+__weak void
+processor_init(struct processor *processor)
+{
+    gdt_load(processor->gdtr);
+    interrupts_init(processor);
+}