From: John Tsiombikas <nuclear@member.fsf.org>
Date: Sun, 14 Aug 2016 13:47:06 +0000 (+0000)
Subject: initial commit
X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=armsys;a=commitdiff_plain;h=6f1f42f5aec36978b03ef5e6fa0c6a0008613df7

initial commit
---

6f1f42f5aec36978b03ef5e6fa0c6a0008613df7
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..e44b643
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,33 @@
+csrc = $(wildcard src/boot/*.c) $(wildcard src/*.c) $(wildcard src/klibc/*.c)
+asmsrc = $(wildcard src/boot/*.S) $(wildcard src/*.S) $(wildcard src/klibc/*.S)
+dep = $(asmsrc:.S=.d) $(csrc:.c=.d)
+obj = $(asmsrc:.S=.o) $(csrc:.c=.o)
+
+inc = -Isrc -Isrc/klibc -Isrc/boot -Iinclude
+
+CFLAGS = $(ccemu) -Wall -g -nostdinc -fno-builtin $(inc) -DKERNEL
+ASFLAGS = $(ccemu) -g -nostdinc -fno-builtin $(inc)
+
+bin = kernel.elf
+
+$(bin): $(obj)
+	ld $(ldemu) -o $@ -Ttext 0x8000 -e kentry $(obj) -Map link.map
+
+%.s: %.c
+	$(CC) $(CFLAGS) -S -o $@ $<
+
+-include $(dep)
+
+%.d: %.c
+	@$(CPP) $(CFLAGS) -MM -MT $(@:.d=.o) $< >$@
+
+%.d: %.S
+	@$(CPP) $(ASFLAGS) -MM -MT $(@:.d=.o) $< >$@
+
+.PHONY: clean
+clean:
+	rm -f $(obj) $(bin)
+
+.PHONY: cleandep
+cleandep:
+	rm -f $(dep)
diff --git a/src/boot/lboot.S b/src/boot/lboot.S
new file mode 100644
index 0000000..1e56e95
--- /dev/null
+++ b/src/boot/lboot.S
@@ -0,0 +1,12 @@
+#define STACK_SIZE	0x4000
+
+	.text
+	.align 4
+
+	.globl kentry
+kentry:
+	ldr sp, =$(stack + STACK_SIZE)
+
+	bl kmain
+
+	.comm stack, STACK_SIZE