Reorganized source tree. Started using autotools.

.gitignore

@@ -1,7 +1,26 @@
 quark.iso
-src/quark-kernel
+quark-kernel
-src/interrupts/libinterrupts.a
+
+autom4te.cache/
+.deps
+aclocal.m4
+ar-lib
+compile
+config.h
+config.h.in
+config.log
+config.status
+configure
+depcomp
+install-sh
+Makefile
+Makefile.in
+missing
+stamp-h1
+*.Po
+*.a
 *.o
 *~
+
 rootfs/
 test/

Makefile

@@ -1,14 +0,0 @@
-.PHONY: all
-all: quark.iso
-
-quark.iso: src/quark-kernel
-	cp src/quark-kernel rootfs/apps
-	grub-mkrescue -o $@ rootfs
-
-src/quark-kernel:
-	make -C src
-
-.PHONY: clean
-clean:
-	make -C src clean
-	rm -f quark.iso

Makefile.am

@@ -0,0 +1 @@
+SUBDIRS = src

configure.ac

@@ -0,0 +1,32 @@
+#                                               -*- Autoconf -*-
+# Process this file with autoconf to produce a configure script.
+
+AC_PREREQ([2.69])
+AC_INIT([quark-kernel], [pre-alpha])
+AM_INIT_AUTOMAKE([-Wall foreign])
+AC_CONFIG_SRCDIR([src/tty.cpp])
+AC_CONFIG_HEADERS([src/config.h])
+
+# Checks for programs.
+AC_PROG_CXX
+AC_PROG_CC
+AM_PROG_AS 
+AM_PROG_AR
+AC_PROG_RANLIB
+
+# Checks for header files.
+AC_CHECK_HEADERS([stddef.h stdint.h])
+
+# Checks for typedefs, structures, and compiler characteristics.
+AC_CHECK_HEADER_STDBOOL
+AC_C_INLINE
+AC_TYPE_SIZE_T
+AC_TYPE_UINT16_T
+AC_TYPE_UINT32_T
+AC_TYPE_UINT64_T
+AC_TYPE_UINT8_T
+
+AM_CONDITIONAL([x86], [test $host = i686-elf])
+
+AC_CONFIG_FILES([Makefile src/Makefile src/mmgr/Makefile src/interrupts/Makefile])
+AC_OUTPUT

src/Makefile

@@ -1,18 +0,0 @@
-objs = addressspace.o tty.o buddyallocator.o math.o cstring.o pagetableentry.o multiboot2header.o systeminfo.o memorymap.o pio.o entry.o quarkkernel.o
-
-CXX = i686-elf-g++
-CC = i686-elf-gcc
-
-CXXFLAGS = -ffreestanding -mgeneral-regs-only -O0 -Wall -fno-exceptions -fno-rtti -ggdb
-LDFLAGS = -T linker.ld -lgcc -nostdlib
-
-quark-kernel: $(objs) linker.ld interrupts/libinterrupts.a
-	$(CXX) -o $@ $(LDFLAGS) interrupts/libinterrupts.a $(objs)
-
-interrupts/libinterrupts.a:
-	make -C interrupts CXX="$(CXX)" CC="$(CC)" CXXFLAGS="$(CXXFLAGS)"
-
-.PHONY: clean
-clean:
-	make -C interrupts clean
-	rm -f $(objs) quark-kernel

src/Makefile.am

@@ -0,0 +1,8 @@
+SUBDIRS = interrupts mmgr
+noinst_PROGRAMS = quark-kernel
+quark_kernel_SOURCES = quarkkernel.cpp tty.cpp systeminfo.cpp util.cpp entry.S pio.S multiboot2header.S
+quark_kernel_LDADD = -lgcc mmgr/libmmgr.a interrupts/libinterrupts.a
+quark_kernel_CPPFLAGS = -ffreestanding -O0 -Wall -fno-exceptions -fno-rtti -ggdb
+quark_kernel_LDFLAGS = -T linker.ld -nostdlib
+quark_kernel_DEPENDENCIES = linker.ld
+

src/cstring.h

@@ -1,26 +0,0 @@
-/*
- * cstring.h
- *
- *  Created on: Jun 13, 2019
- *      Author: nathan
- */
-
-#ifndef SRC_CSTRING_H_
-#define SRC_CSTRING_H_
-
-#include <stddef.h>
-
-extern "C"
-{
-
-void* memcpy(void* destination, const void* source, size_t num);
-
-void* memmove(void* destination, const void* source, size_t num);
-
-int memcmp(const void* ptr1, const void* ptr2, size_t num);
-
-void* memset (void* ptr, int value, size_t num);
-
-}
-
-#endif /* SRC_CSTRING_H_ */

src/interrupts/Makefile

@@ -1,9 +0,0 @@
-objs = x86/inthandlers.o x86/interruptdescriptor.o x86/idt.o x86/interrupts.o
-archive = libinterrupts.a
-
-$(archive): $(objs)
-	i686-elf-ar rcs $@ $^
-
-.PHONY: clean
-clean:
-	rm -f $(archive) $(objs)

src/interrupts/Makefile.am

@@ -0,0 +1,6 @@
+noinst_LIBRARIES = libinterrupts.a
+libinterrupts_a_CPPFLAGS = -ffreestanding -mgeneral-regs-only -O0 -Wall -fno-exceptions -fno-rtti -ggdb
+
+if x86
+libinterrupts_a_SOURCES = x86/interrupts.cpp x86/inthandlers.cpp x86/interruptdescriptor.cpp x86/idt.S
+endif

src/math.cpp

@@ -1,27 +0,0 @@
-/*
- * math.cpp
- *
- *  Created on: May 23, 2019
- *      Author: nathan
- */
-
-#include "math.h"
-
-uint32_t ilog2(uint32_t n, bool roundUp)
-{
-	uint32_t m = n;
-	uint32_t count = 0;
-	bool isPowerOfTwo = true;
-	while(m)
-	{
-		if((m & 1) == 1 && m > 1)
-		{
-			isPowerOfTwo = false;
-		}
-		count++;
-		m >>= 1;
-	}
-	return count - (isPowerOfTwo ? 1 : (roundUp ? 0 : 1));
-}
-
-

src/math.h

@@ -1,22 +0,0 @@
-/*
- * math.h
- *
- *  Created on: May 23, 2019
- *      Author: nathan
- */
-
-#ifndef SRC_MATH_H_
-#define SRC_MATH_H_
-
-#include <stdint.h>
-
-/**
- * Computes the logarithm in base 2 of a given integer, returning an integer as
- * the result. For n = -1, returns unsigned -1.
- *
- * @returns floor(log2(n)), where n > 0. Else unsigned -1.
- */
-uint32_t ilog2(uint32_t n, bool roundUp = false);
-
-
-#endif /* SRC_MATH_H_ */

src/mmgr/Makefile.am

@@ -0,0 +1,7 @@
+noinst_LIBRARIES = libmmgr.a
+libmmgr_a_SOURCES = memorymap.cpp buddyallocator.cpp addressspace.cpp
+libmmgr_a_CPPFLAGS = -ffreestanding -O0 -Wall -fno-exceptions -fno-rtti -ggdb
+
+if x86
+libmmgr_a_SOURCES += x86/pagetableentry.cpp
+endif

src/mmgr/addressspace.hpp

@@ -4,8 +4,8 @@
 #include <stddef.h>
 
 #include "memoryallocator.hpp"
-#include "pagetableentry.hpp"
+#include "x86/pagetableentry.hpp"
-#include "systypes.hpp"
+#include "types.hpp"
 
 namespace kernel {
 

src/mmgr/buddyallocator.cpp

@@ -1,10 +1,26 @@
 #include "buddyallocator.hpp"
-#include "math.h"
+#include "types.hpp"
-#include "systypes.hpp"
 #include "memorymap.hpp"
 
 #define roundUp(n, m) ((n % m == 0) ? n : (n + m - (n % m)))
 
+uint32_t ilog2(uint32_t n, bool roundUp)
+{
+	uint32_t m = n;
+	uint32_t count = 0;
+	bool isPowerOfTwo = true;
+	while(m)
+	{
+		if((m & 1) == 1 && m > 1)
+		{
+			isPowerOfTwo = false;
+		}
+		count++;
+		m >>= 1;
+	}
+	return count - (isPowerOfTwo ? 1 : (roundUp ? 0 : 1));
+}
+
 kernel::BuddyAllocator::BuddyAllocator()
 {
 

src/mmgr/memoryallocator.hpp

@@ -2,7 +2,7 @@
 #define __MEMORYALLOCATOR_H_
 
 #include <stddef.h>
-#include "systypes.hpp"
+#include "types.hpp"
 
 namespace kernel
 {

src/mmgr/memorymap.hpp

@@ -4,7 +4,7 @@
 #include <stdint.h>
 #include <stddef.h>
 
-#include "systypes.hpp"
+#include "types.hpp"
 
 namespace kernel
 {

src/mmgr/types.hpp

@@ -0,0 +1,15 @@
+#ifndef MEM_TYPES_H
+#define MEM_TYPES_H
+
+#include <stdint.h>
+#include <stddef.h>
+
+#if defined __i386__
+typedef uint32_t physaddr_t;
+#elif defined __amd64__
+typedef uint64_t physaddr_t;
+#else
+typedef uint64_t physaddr_t;
+#endif
+
+#endif

src/mmgr/x86/pagetableentry.hpp

@@ -9,7 +9,7 @@
 #define SRC_PAGETABLEENTRY_H_
 
 #include <stdint.h>
-#include "systypes.hpp"
+#include "../types.hpp"
 
 namespace kernel {
 

src/quarkkernel.cpp

@@ -3,22 +3,18 @@
 
 #include "systypes.hpp"
 #include "systeminfo.hpp"
-#include "memorymap.hpp"
+#include "mmgr/memorymap.hpp"
-#include "buddyallocator.hpp"
+#include "mmgr/buddyallocator.hpp"
-#include "addressspace.hpp"
+#include "mmgr/addressspace.hpp"
 #include "pio.hpp"
-#include "tty.h"
+#include "tty.hpp"
+#include "util.hpp"
 
 using namespace kernel;
 
 extern SystemInfo system_info;
 extern MemoryMap::Region memory_map;
 
-extern "C" void __cxa_pure_virtual()
-{
-
-}
-
 void main(char* cmdline)
 {
     TTY tty((char*) 0xC00B8000);

src/systypes.hpp

@@ -1,9 +1,6 @@
 #ifndef SYSTYPES_H
 #define SYSTYPES_H
 
-#include <stdint.h>
+#include "mmgr/types.hpp"
-#include <stddef.h>
-
-typedef uint32_t physaddr_t;
 
 #endif

src/tty.cpp

@@ -1,5 +1,5 @@
 #include <stdbool.h>
-#include "tty.h"
+#include "tty.hpp"
 
 kernel::TTY::TTY(char* vga)
 {

src/util.cpp

@@ -1,13 +1,6 @@
-/*
- * cstring.cpp
- *
- *  Created on: Jun 13, 2019
- *      Author: nathan
- */
-
 #include <stdint.h>
-#include <stddef.h>
+
-#include "cstring.h"
+#include "util.hpp"
 
 void* memcpy(void* destination, const void* source, size_t num)
 {
@@ -82,4 +75,7 @@ void* memset (void* ptr, int value, size_t num)
 	return ptr;
 }
 
-
+void __cxa_pure_virtual()
+{
+    // do nothing
+}

src/util.hpp

@@ -0,0 +1,16 @@
+#ifndef UTIL_H
+#define UTIL_H
+
+#include <stddef.h>
+
+extern "C" void __cxa_pure_virtual();
+
+extern "C" void* memcpy(void* destination, const void* source, size_t num);
+
+extern "C" void* memmove(void* destination, const void* source, size_t num);
+
+extern "C" int memcmp(const void* ptr1, const void* ptr2, size_t num);
+
+extern "C" void* memset(void* ptr, int value, size_t num);
+
+#endif