created /kernel/isr subdir, moved isr.asm from boot to isr module, added interrupts.cc for isr() main function and isr_bootstrap() routine

git-svn-id: svn://anubis/hos/trunk@66 5b3e749e-e535-0410-8002-a9bb6afbdfca

kernel/Makefile

@@ -15,7 +15,7 @@ export CXXFLAGS := -Wall -O2 -fno-rtti -fno-exceptions
 export LDFLAGS  := -T $(LDSCRIPT) -Map $(KERNEL).map
 export LDLIBS   := `$(CC) -print-libgcc-file-name`
 
-SUBDIRS         := boot mm lang
+SUBDIRS         := boot mm lang isr
 SUBDIRS_clean   := $(SUBDIRS:%=%.clean)
 
 .PHONY: all

kernel/isr/Makefile

@@ -0,0 +1,2 @@
+
+include $(HOS_TOPLEVEL)/subdir.mak

kernel/isr/interrupts.cc

@@ -0,0 +1,19 @@
+
+#include "hos_types.h"
+#include "interrupts.h"
+
+extern "C" {
+
+void isr(u8_t int_num, int_stack_t * int_stack)
+{
+    switch (int_num)
+    {
+    }
+}
+
+} /* extern "C" */
+
+void interrupts_bootstrap()
+{
+    /* TODO: set up IDTR, IDT */
+}

kernel/isr/interrupts.h

@@ -0,0 +1,17 @@
+
+#ifndef INTERRUPTS_H
+#define INTERRUPTS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void isr(u8_t int_num, int_stack_t * int_stack);
+
+#ifdef __cplusplus
+}
+#endif
+
+void interrupts_bootstrap();
+
+#endif