1 files changed, 70 insertions, 0 deletions
diff --git a/usr.bin/doscmd/cpu.c b/usr.bin/doscmd/cpu.c
new file mode 100644
index 0000000..bad8725
--- /dev/null
+++ b/usr.bin/doscmd/cpu.c
@@ -0,0 +1,70 @@
+/*
+** No copyright ?!
+**
+** $Id: cpu.c,v 1.5 1996/09/25 11:05:54 miff Exp $
+*/
+#include "doscmd.h"
+
+/*
+** Hardware /0 interrupt
+*/
+void
+int00(regcontext_t *REGS)
+{
+    debug(D_ALWAYS, "Divide by 0 in DOS program!\n");
+    exit(1);
+}
+
+void
+int01(regcontext_t *REGS)
+{
+    debug(D_ALWAYS, "INT 1 with no handler! (single-step/debug)\n");
+}
+
+void
+int03(regcontext_t *REGS)
+{
+    debug(D_ALWAYS, "INT 3 with no handler! (breakpoint)\n");
+}
+
+void
+int0d(regcontext_t *REGS)
+{
+    debug(D_ALWAYS, "IRQ5 with no handler!\n");
+}
+
+void
+cpu_init(void)
+{
+    u_long vec;
+
+    vec = insert_hardint_trampoline();
+    ivec[0x00] = vec;
+    register_callback(vec, int00, "int 00");
+
+    vec = insert_softint_trampoline();
+    ivec[0x01] = vec;
+    register_callback(vec, int01, "int 01");
+
+    vec = insert_softint_trampoline();
+    ivec[0x03] = vec;
+    register_callback(vec, int03, "int 03");
+
+    vec = insert_hardint_trampoline();
+    ivec[0x0d] = vec;
+    register_callback(vec, int0d, "int 0d");
+
+    vec = insert_null_trampoline();
+    ivec[0x34] = vec;	/* floating point emulator */
+    ivec[0x35] = vec;	/* floating point emulator */
+    ivec[0x36] = vec;	/* floating point emulator */
+    ivec[0x37] = vec;	/* floating point emulator */
+    ivec[0x38] = vec;	/* floating point emulator */
+    ivec[0x39] = vec;	/* floating point emulator */
+    ivec[0x3a] = vec;	/* floating point emulator */
+    ivec[0x3b] = vec;	/* floating point emulator */
+    ivec[0x3c] = vec;	/* floating point emulator */
+    ivec[0x3d] = vec;	/* floating point emulator */
+    ivec[0x3e] = vec;	/* floating point emulator */
+    ivec[0x3f] = vec;	/* floating point emulator */
+}