[Add] step7 completed 🎉

01/bootload/Makefile

@@ -17,7 +17,7 @@ H8WRITE = ../../tools/h8write/h8write
 
 H8WRITE_SERDEV = /dev/cu.usbserial-FTRVI7J0
 
-OBJS = vector.o startup.o main.o
+OBJS = vector.o startup.o intr.o main.o interrupt.o
 OBJS += lib.o serial.o xmodem.o elf.o
 
 TARGET = kzload
@@ -31,6 +31,7 @@ LFRAGS = -static -T ld.scr -L.
 
 .SUFFIXES: .c .o
 .SUFFIXES: .s .o
+.SUFFIXES: .S .o
 
 all : $(TARGET)
 
@@ -45,6 +46,9 @@ $(TARGET) : $(OBJS)
 .s.o : $<
  $(CC) -c $(CFRAGS) $<
 
+.S.o : $<
+ $(CC) -c $(CFRAGS) $<
+
 $(TARGET).mot : $(TARGET)
  $(OBJCOPY) -O srec $(TARGET) $(TARGET).mot
 

01/bootload/interrupt.c

@@ -0,0 +1,22 @@
+#include "defines.h"
+#include "intr.h"
+#include "interrupt.h"
+
+int softvec_init(void) {
+ int type;
+ for (type = 0; type < SOFTVEC_TYPE_NUM; type++)
+ softvec_setintr(type, NULL);
+
+ return 0;
+}
+
+int softvec_setintr(softvec_type_t type, softvec_handler_t handler) {
+ SOFTVECS[type] = handler;
+ return 0;
+}
+
+void interrupt(softvec_type_t type, unsigned long sp) {
+ softvec_handler_t handler = SOFTVECS[type];
+ if(handler)
+ handler(type, sp);
+}

01/bootload/interrupt.h

@@ -0,0 +1,22 @@
+#ifndef _INTERRUPT_H_INCLUDED_
+#define _INTERRUPT_H_INCLUDED_
+
+extern char softvec;
+#define SOFTVEC_ADDR (&softvec)
+
+typedef short softvec_type_t;
+
+typedef void (*softvec_handler_t)(softvec_type_t type, unsigned long sp);
+
+#define SOFTVECS ((softvec_handler_t *)SOFTVEC_ADDR)
+
+#define INTR_ENABLE asm volatile ("andc.b #0x3f, ccr")
+#define INTR_DISABLE asm volatile ("orc.b #0xc0, ccr")
+
+int softvec_init(void);
+
+int softvec_setintr(softvec_type_t type, softvec_handler_t handler);
+
+void interrupt(softvec_type_t type, unsigned long sp);
+
+#endif

01/bootload/intr.S

@@ -0,0 +1,71 @@
+#include "intr.h"
+ .h8300h
+ .section .text
+
+ .global _intr_softerr
+# .type _intr_softerr, @function
+
+_intr_softerr:
+ mov.l er6, @-er7
+ mov.l er5, @-er7
+ mov.l er4, @-er7
+ mov.l er3, @-er7
+ mov.l er2, @-er7
+ mov.l er1, @-er7
+ mov.l er0, @-er7
+ mov.l er7, er1
+ mov.w #SOFTVEC_TYPE_SOFTERR, r0
+ jsr @_interrupt
+ mov.l @er7+, er0
+ mov.l @er7+, er1
+ mov.l @er7+, er2
+ mov.l @er7+, er3
+ mov.l @er7+, er4
+ mov.l @er7+, er5
+ mov.l @er7+, er6
+ rte
+
+ .global _intr_syscall
+# .type _intr_syscall, @function
+
+_intr_syscall:
+ mov.l er6, @-er7
+ mov.l er5, @-er7
+ mov.l er4, @-er7
+ mov.l er3, @-er7
+ mov.l er2, @-er7
+ mov.l er1, @-er7
+ mov.l er0, @-er7
+ mov.l er7, er1
+ mov.w #SOFTVEC_TYPE_SYSCALL, r0
+ jsr @_interrupt
+ mov.l @er7+, er0
+ mov.l @er7+, er1
+ mov.l @er7+, er2
+ mov.l @er7+, er3
+ mov.l @er7+, er4
+ mov.l @er7+, er5
+ mov.l @er7+, er6
+ rte
+
+ .global _intr_serintr
+# .type _intr_serintr @function
+_intr_serintr:
+ mov.l er6, @-er7
+ mov.l er5, @-er7
+ mov.l er4, @-er7
+ mov.l er3, @-er7
+ mov.l er2, @-er7
+ mov.l er1, @-er7
+ mov.l er0, @-er7
+ mov.l er7, er1
+ mov.w #SOFTVEC_TYPE_SERINTR, r0
+ jsr @_interrupt
+ mov.l @er7+, er0
+ mov.l @er7+, er1
+ mov.l @er7+, er2
+ mov.l @er7+, er3
+ mov.l @er7+, er4
+ mov.l @er7+, er5
+ mov.l @er7+, er6
+ rte

01/bootload/intr.h

@@ -0,0 +1,10 @@
+#ifndef _INTR_H_INCLUDED_
+#define _INTR_H_INCLUDED_
+
+#define SOFTVEC_TYPE_NUM 3
+
+#define SOFTVEC_TYPE_SOFTERR 0
+#define SOFTVEC_TYPE_SYSCALL 1
+#define SOFTVEC_TYPE_SERINTR 2
+
+#endif