ptos/amd64+hal: Add interrupt handling + P1 KPCR init

Signed-off-by: Chloe M. <chloe@mensia.org>
2026-07-11 04:46:00 +00:00
parent 0f2d2b9ea5
commit 7cb153f98c
7 changed files with 335 additions and 3 deletions
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2026, Chloe M.
+ * Provided under the BSD-3 clause.
+ *
+ * Description: Trap dispatch
+ * Author:      Chloe M.
+ */
+
+#include <machine/trap.h>
+#include <ke/bugcheck.h>
+#include <ptdef.h>
+
+#define TRAP_STR(TYPE)              \
+    ((TYPE) >= NELEM(TrapTab))      \
+        ? "bad trap type"           \
+        : TrapTab[(TYPE)]
+
+static const CHAR *TrapTab[] = {
+    [TRAP_DIVERR] = "divide error",
+    [TRAP_DEBUG_EXCEPTION] = "debug exception",
+    [TRAP_NMI] = "non-maskable interrupt",
+    [TRAP_BREAKPOINT] = "breakpoint",
+    [TRAP_OVERFLOW] = "overflow",
+    [TRAP_BOUND_RANGE] = "bound range exceeded",
+    [TRAP_INVALID_OPCODE] = "invalid opcode",
+    [TRAP_NO_COPROCESSOR] = "no math coprocessor",
+    [TRAP_DOUBLE_FAULT] = "double fault",
+    [TRAP_RESERVED] = "reserved exception",
+    [TRAP_INVALID_TSS] = "invalid tss",
+    [TRAP_SEG_NOT_PRESENT] = "segment not present",
+    [TRAP_STACK_SEG_FAULT] = "stack segment fault",
+    [TRAP_GENERAL_PROTECTION] = "general protection fault",
+    [TRAP_PAGE_FAULT] = "page fault"
+};
+
+VOID
+MdTrapDispatch(TRAP_FRAME *TrapFrame)
+{
+    /* Sanity check */
+    if (TrapFrame == NULL) {
+        KeBugCheck(
+            BUGCHECK_UNBOUND_RESRC,
+            "unbound trapframe during dispatch\n"
+        );
+    }
+
+    KeBugCheck(
+        BUGCHECK_EXCEPTION,
+        "got fatal %s\n", TRAP_STR(TrapFrame->Vector)
+    );
+}