first commit

Makefile

@@ -0,0 +1,5 @@
+# There is no need to edit this file. Make your changes in config/config.mk.
+
+include config/config.mk
+include config/sdk-config.mk
+include config/sdk-targets.mk

config/memory.scm

@@ -0,0 +1,57 @@
+(define memories '(
+
+        (memory HighCode
+                (address (#xC00000 . #xC7FFFF))
+                (type rom)
+        )
+
+        (memory HighData
+                (address (#x010000 . #x07FFFF))
+                (section heap)
+                (type ram)
+        )
+
+        (memory LowCode
+                (address (#x008800 . #x00FFFF))
+                (section code)
+                (section cdata)
+                (section switch)
+        )
+
+        (memory IOSpace
+                (address (#x00DF00 . #x00DFFF))
+                (section (VERAIOPort #x00DF00))
+        )
+
+        (memory LowData
+                (address (#x001000 . #x007FFF))
+                (section near)
+                (section data)
+                (section znear)
+                (section zdata)
+        )
+
+        (memory stack
+                (address (#x000200 . #x000FFF))
+                (section (stack #x00200))
+                (section (cstack #x00400))
+        )
+
+        (memory DirectPage
+                (address (#x000000 . #x0000FF))
+                (section
+                        (registers #x000004)
+                        (ztiny)
+                )
+        )
+
+        (block cstack (size #x400))               ; C stack size
+
+        (block stack  (size #x200))               ; machine stack size
+
+        (block heap  (size #x2000))
+
+        (base-address _DirectPageStart DirectPage 0)
+
+        (base-address _NearBaseAddress LowData    0)
+))

config/sdk-config.mk

@@ -0,0 +1,81 @@
+SHELL := bash
+CC := cc65816
+AS := as65816
+AR := nlib
+LD := ln65816
+
+.SUFFIXES:
+.SUFFIXES: .c .s .o .a
+
+MEMORY_MAP := config/memory.scm
+
+CFLAGS := --include-system=include/libc \
+		  -I include \
+		  --code-model=large \
+		  --data-model=huge \
+		  --64bit-doubles \
+		  --strong-inline \
+		  --force-switch jump-table
+
+ASFLAGS := --include-system=include/libc \
+		   -I include \
+		   --code-model=large \
+		   --data-model=huge
+
+ifeq ($(RELEASE), "true")
+CFLAGS += -DNDEBUG \
+		  -O2 \
+		  --speed
+else
+CFLAGS += --debug \
+		  -Wall \
+		  -Wextra \
+		  -Wpedantic \
+		  -Werror \
+		  -Wno-c11-extensions \
+		  -Wno-gnu-binary-literal \
+		  -Wno-gnu-conditional-omitted-operand \
+		  -Wno-gnu-case-range \
+		  -Wimplicit-fallthrough \
+		  -Wno-gnu-folding-constant
+ASFLAGS += --debug
+endif
+
+LDFLAGS := $(MEMORY_MAP) \
+	   --hosted \
+	   --no-data-init-table-section \
+	   --rtattr cstartup=turaco \
+	   --list-file build.lst \
+	   --verbose \
+	   --no-auto-libraries \
+	   --output-format pgz
+
+ifeq ($(ENABLE_RELEASE_BUILD), "true")
+CFLAGS += -DRELEASE_BUILD
+CFLAGS += -DNDEBUG
+else
+CFLAGS += -DDEBUG
+endif
+
+LIBS := build/libc.a
+
+%.o: %.c
+	@echo "Compiling $@..."
+	@$(CC) -c $(CFLAGS) -o $@ $<
+
+%.o: %.s
+	@echo "Assembling $@)..."
+	@$(AS) $(ASFLAGS) -o $@ $<
+
+KERNEL_SRC_C := $(wildcard src/*.c) \
+	    	    $(wildcard src/*/*.c) \
+	    	    $(wildcard src/*/*/*.c) \
+	    	    $(wildcard src/*/*/*/*.c) \
+	    	    $(wildcard src/*/*/*/*/*.c)
+KERNEL_SRC_S := $(wildcard src/*.s) \
+	    	    $(wildcard src/*/*.s) \
+	    	    $(wildcard src/*/*/*.s) \
+	    	    $(wildcard src/*/*/*/*.s) \
+	    	    $(wildcard src/*/*/*/*/*.s)
+KERNEL_OBJ := $(KERNEL_SRC_C:.c=.o) \
+			  $(KERNEL_SRC_S:.s=.o)

config/sdk-targets.mk

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+.PHONY: all
+all: build/kernel.bin
+
+.PHONY: clean
+clean:
+	@find build -type f \( \
+		-name '*.pgz' -o \
+		-name '*.bin' -o \
+		-name '*.elf' -o \
+		-name '*.a' -o \
+		-name '*.lst' \
+	\) -delete
+	@find src -type f \( \
+		-name '*.o' -o \
+		-name '$(TARGET)' \
+	\) -delete
+
+build/kernel.bin: $(KERNEL_OBJ)
+	@echo "Linking $@..."
+	@$(LD) -o $@ $(LDFLAGS) $^

include/config.h

@@ -0,0 +1,7 @@
+//*****************************************************************************
+//  Sentinel 65X Kernel
+//
+//  include/config.h
+//*****************************************************************************
+
+#pragma once

src/main.c

@@ -0,0 +1,13 @@
+//*****************************************************************************
+//  Sentinel 65X Kernel
+//
+//  src/main.c
+//*****************************************************************************
+
+#include "config.h"
+
+void
+main(void)
+{
+	for (;;) {}
+}