Makefile

@@ -1,11 +1,10 @@
-
 EMULATOR = qemu-system-i386
 AS = ${HOME}/opt/cross/bin/i686-elf-as
 CC = ${HOME}/opt/cross/bin/i686-elf-gcc
 CPP = ${HOME}/opt/cross/bin/i686-elf-g++ 
-CFLAGS =  -ffreestanding -Og -ggdb  -Wall -Wextra
+CFLAGS =  -ffreestanding -Og -ggdb  -Wall -Wextra  -I source/CoreLib/build/include
 
-OFILES =$(BUILD_DIR)/boot.o $(BUILD_DIR)/Path.o $(BUILD_DIR)/kterm.o $(BUILD_DIR)/kernel.o $(BUILD_DIR)/memory.o  $(BUILD_DIR)/paging.o	$(BUILD_DIR)/VFS.o $(BUILD_DIR)/pit.o 	$(BUILD_DIR)/time.o	$(BUILD_DIR)/keyboard.o	 $(BUILD_DIR)/io.o 	$(BUILD_DIR)/processor.o $(BUILD_DIR)/gdtc.o $(BUILD_DIR)/idt.o $(BUILD_DIR)/pic.o $(BUILD_DIR)/sv-terminal.o $(BUILD_DIR)/string.o  $(BUILD_DIR)/prekernel.o $(BUILD_DIR)/KHeap.o $(BUILD_DIR)/pci.o $(BUILD_DIR)/pcidevice.o $(BUILD_DIR)/atapiDevice.o $(BUILD_DIR)/ataDevice.o $(BUILD_DIR)/rsdp.o $(BUILD_DIR)/acpi.o
+OFILES =$(BUILD_DIR)/boot.o $(BUILD_DIR)/kterm.o $(BUILD_DIR)/kernel.o $(BUILD_DIR)/memory.o  $(BUILD_DIR)/paging.o	$(BUILD_DIR)/VFS.o $(BUILD_DIR)/pit.o 	$(BUILD_DIR)/time.o	$(BUILD_DIR)/keyboard.o	 $(BUILD_DIR)/io.o 	$(BUILD_DIR)/processor.o $(BUILD_DIR)/gdtc.o $(BUILD_DIR)/idt.o $(BUILD_DIR)/pic.o $(BUILD_DIR)/sv-terminal.o $(BUILD_DIR)/prekernel.o $(BUILD_DIR)/KHeap.o $(BUILD_DIR)/pci.o $(BUILD_DIR)/pcidevice.o $(BUILD_DIR)/atapiDevice.o $(BUILD_DIR)/ataDevice.o $(BUILD_DIR)/rsdp.o $(BUILD_DIR)/acpi.o
 
 SRC_DIR = source
 BUILD_DIR = build
@@ -53,8 +52,7 @@ test_disk: all
 
 
 build_kernel: $(OBJ_LINK_LIST)
-	$(CC) -T $(SRC_DIR)/kernel//linker.ld -o $(BUILD_DIR)/myos.bin \
+	$(CPP) -T $(SRC_DIR)/kernel/linker.ld -o $(BUILD_DIR)/myos.bin -ffreestanding -ggdb -Og -nostdlib $(OBJ_LINK_LIST) -lgcc -L source/CoreLib/build -lCoreLib
-	 -ffreestanding -ggdb -Og -nostdlib $(OBJ_LINK_LIST) -lgcc
 
 build_x86_64: 
 	$(AS) $(SRC_DIR)/cgc/x86_64/crti.s -o $(BUILD_DIR)/crti_64.o
@@ -71,7 +69,7 @@ $(BUILD_DIR)/kterm.o:
 	$(CPP) -c $(SRC_DIR)/kernel/terminal/kterm.cpp  -o $(BUILD_DIR)/kterm.o $(CFLAGS) -fno-exceptions -fno-rtti
 
 $(BUILD_DIR)/io.o:
-		$(CPP) -c $(SRC_DIR)/kernel/drivers/io/io.cpp  -o $(BUILD_DIR)/io.o $(CFLAGS) -fno-exceptions -fno-rtti
+	$(CPP) -c $(SRC_DIR)/kernel/drivers/io/io.cpp  -o $(BUILD_DIR)/io.o $(CFLAGS) -fno-exceptions -fno-rtti
 
 $(BUILD_DIR)/idt.o:
 	$(CPP) -c $(SRC_DIR)/kernel/interrupts/idt.cpp -o $(BUILD_DIR)/idt.o $(CFLAGS) -fno-exceptions -fno-rtti
@@ -82,9 +80,6 @@ $(BUILD_DIR)/gdtc.o:
 $(BUILD_DIR)/pic.o:
 	$(CPP) -c $(SRC_DIR)/kernel/drivers/pic/pic.cpp -o $(BUILD_DIR)/pic.o $(CFLAGS) -fno-exceptions -fno-rtti
 
-$(BUILD_DIR)/string.o:
-	$(CC) -c $(SRC_DIR)/lib/include/string.c  -o $(BUILD_DIR)/string.o $(CFLAGS) -std=gnu99
-
 $(BUILD_DIR)/PhysicalMemoryManager.o:
 	$(CPP) -c $(SRC_DIR)/kernel/memory/PhysicalMemoryManager.cpp  -o $(BUILD_DIR)/PhysicalMemoryManager.o $(CFLAGS) -fno-exceptions -fno-rtti
 
@@ -136,9 +131,6 @@ $(BUILD_DIR)/prekernel.o:
 $(BUILD_DIR)/processor.o:
 	$(CPP) -c $(SRC_DIR)/kernel/i386/processor.cpp -o $(BUILD_DIR)/processor.o $(CFLAGS) -fno-exceptions -fno-rtti
 
-$(BUILD_DIR)/Path.o:
-	$(CPP) -c $(SRC_DIR)/kernel/vfs/Path.cpp -o $(BUILD_DIR)/Path.o $(CFLAGS) -fno-exceptions -fno-rtti
-
 # Assembly -> Object files
 $(BUILD_DIR)/boot.o:
 	$(AS) $(SRC_DIR)/kernel/boot/boot.s -o $(BUILD_DIR)/boot.o

source/CoreLib/Makefile

@@ -0,0 +1,33 @@
+CPP = ${HOME}/opt/cross/bin/i686-elf-g++
+CFLAGS = -ffreestanding -Og -ggdb -Wall -Wextra
+
+SRC_DIR = .
+BUILD_DIR = build
+OBJ_FOLDER = bin
+OUTPUTFILE = $(BUILD_DIR)/libCoreLib.a
+
+OFILES = $(OBJ_FOLDER)/memory.o $(OBJ_FOLDER)/path.o $(OBJ_FOLDER)/stack.o $(OBJ_FOLDER)/string.o $(OBJ_FOLDER)/stringview.o
+
+
+.phony: all
+all: $(OUTPUTFILE)
+	cp *.h build/include/
+
+$(OUTPUTFILE): $(OFILES)
+	ar -rc $(OUTPUTFILE) $(OFILES)
+
+$(OBJ_FOLDER)/memory.o: Memory.cpp
+	$(CPP) -c Memory.cpp -o $(OBJ_FOLDER)/memory.o $(CFLAGS)
+
+$(OBJ_FOLDER)/path.o: Path.cpp
+	$(CPP) -c Path.cpp  -o $(OBJ_FOLDER)/path.o $(CFLAGS)
+
+$(OBJ_FOLDER)/stack.o: Stack.cpp
+	$(CPP) -c Stack.cpp  -o $(OBJ_FOLDER)/stack.o $(CFLAGS)
+
+$(OBJ_FOLDER)/string.o: String.cpp
+	$(CPP) -c String.cpp -o $(OBJ_FOLDER)/string.o $(CFLAGS)
+
+$(OBJ_FOLDER)/stringview.o: StringView.cpp
+	$(CPP) -c StringView.cpp  -o $(OBJ_FOLDER)/stringview.o $(CFLAGS)
+

source/CoreLib/Memory.cpp

@@ -0,0 +1,58 @@
+//
+// Created by nigel on 19/02/23.
+//
+#include "Memory.h"
+
+void* memset (void* ptr, int value, size_t num)
+{
+    for( int i = 0; i < num; i++ )
+    {
+        unsigned char* data  = (unsigned char*)ptr+ i;
+        *data = (unsigned char)value;
+    }
+    return ptr;
+}
+
+
+int memcmp( const void* ptr1, const void* ptr2, size_t num)
+{
+    const unsigned char * cs = (const unsigned char*) ptr1;
+    const unsigned char * ct = (const unsigned char*) ptr2;
+
+
+    for (int i = 0 ; i < num ; i++, cs++, ct++ ){
+        if( *cs < *ct){
+            return -1;
+        } else if( *cs > *ct){
+            return 1;
+        }
+    }
+
+    return 0;
+
+}
+
+size_t strlen(const char* str) {
+    size_t len = 0;
+    while(str[len]){
+        len++;
+    }
+    return len;
+}
+
+int strncmp ( const char* str1, const char* str2, size_t num ){
+    for( int i = 0; i < num ; i++){
+
+        if( str1[i] < str2[i]){
+            return -1;
+        }
+
+        if( str1[i] > str2[i] ){
+            return 1;
+        }
+
+
+    }
+
+    return 0;
+}

source/CoreLib/Memory.h

@@ -0,0 +1,12 @@
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+
+void* memset (void* ptr, int value, size_t num);
+
+int memcmp( const void* ptr1, const void* ptr2, size_t num);
+
+size_t strlen(const char* str);
+
+int strncmp ( const char* str1, const char* str2, size_t num );

source/CoreLib/Path.cpp

@@ -0,0 +1,24 @@
+//
+// Created by nigel on 19/02/23.
+//
+#include "Path.h"
+
+Path::Path(String path)
+: path(path)
+{
+
+}
+
+StringView Path::getbasename()
+{
+    unsigned int path_length = path.length();
+    int i = path_length;
+    while (path[i] != '/')
+        i--;
+
+    return {path,static_cast<unsigned int>(i +1), path_length};
+}
+
+char* Path::str() {
+    return path.str();
+}

source/CoreLib/Path.h

@@ -0,0 +1,22 @@
+//
+// Created by nigel on 19/02/23.
+//
+#pragma once
+#include <stddef.h>
+#include "StringView.h"
+
+
+class Path{
+public:
+    explicit Path(String path);
+
+    StringView getbasename();
+
+    char* str();
+
+private:
+    String path;
+
+};
+
+

source/CoreLib/Stack.cpp

@@ -0,0 +1,3 @@
+//
+// Created by nigel on 19/02/23.
+//

source/CoreLib/Stack.h

@@ -1,5 +1,5 @@
 #pragma once
-#include "../../kernel/memory/KernelHeap.h"
+#include "../kernel/memory/KernelHeap.h"
 #include <stdint.h>
 
 template <typename T>

source/CoreLib/String.cpp

@@ -0,0 +1,39 @@
+#include "String.h"
+#include <stdint.h>
+#include <stddef.h>
+
+
+String::String(char* characters)
+: chars(characters)
+        {
+
+        }
+
+char* String::str(){
+    return chars;
+}
+
+unsigned int String::length ()
+{
+    int i = 0;
+
+    while (  chars[i] != '\0'){
+        i++;
+    }
+
+    return i;
+}
+
+// Returns a null character if size exceeds limits
+char String::operator[] (size_t idx)
+{
+    if( idx  > this->length())
+        return '\0';
+
+    return chars[idx];
+}
+
+const char String::operator[](size_t idx) const {
+return (const char) chars[idx];
+}
+

source/CoreLib/String.h

@@ -0,0 +1,18 @@
+#pragma once
+#include <stddef.h>
+
+class  String {
+public:
+    String(char* characters);
+    String(String&) = default;
+    unsigned int length();
+
+    char* str ();
+    char operator[](size_t index) ;
+    const char operator[](size_t idx) const;
+
+protected:
+    char* chars;
+
+
+};

source/CoreLib/StringView.cpp

@@ -0,0 +1,14 @@
+//
+// Created by nigel on 19/02/23.
+//
+#include "StringView.h"
+
+StringView::StringView(String string, unsigned int start, unsigned int end)
+        : String(string), begin(start), end(end)
+{
+
+}
+
+char* StringView::str(){
+   //TODO: Not implemented
+}

source/CoreLib/StringView.h

@@ -0,0 +1,14 @@
+//
+// Created by nigel on 19/02/23.
+//
+#pragma once
+#include "String.h"
+
+class StringView : String {
+public:
+    StringView(String string, unsigned int start, unsigned  int end );
+    char* str ();
+private:
+    unsigned int begin;
+    unsigned int end;
+};

source/kernel/drivers/acpi/rsdp.h

@@ -1,7 +1,8 @@
 #pragma once
 #include <stdint.h>
 #include "./../../terminal/kterm.h"
-#include "../../../lib/include/mem.h"
+#include <CoreLib/Memory.h>
+
 struct RSDPTR {
     char signature[8];
     uint8_t Checksum ;

source/kernel/drivers/ata/ataDevice.cpp

@@ -12,7 +12,6 @@ void ATA_DEVICE::Soft_Reset(uint8_t DEVICE_CHANNEL,DEVICE_DRIVE drive){
 
 }
 
-
 void ATA_DEVICE::Identify(uint16_t DEVICE_CHANNEL,DEVICE_DRIVE drive ){
     // lets ignore which port we actually want to check for now !
 

source/kernel/kernel.cpp

@@ -1,10 +1,6 @@
 /*
     Copyright © Nigel Barink 2023
 */
-extern "C"{
-#include "../lib/include/string.h"
-}
-
 #include "memory/memory.h"
 #include "memory/KernelHeap.h"
 #include "memory/gdt/gdtc.h"

source/kernel/memory/PhysicalMemoryManager.h

@@ -1,8 +1,9 @@
 #pragma once
 #include <stddef.h>
+#include <CoreLib/Memory.h>
+
 #include "../prekernel/bootstructure.h"
 #include "../terminal/kterm.h"
-#include "../../lib/include/mem.h"
 #include "../bitmap.h"
 
 #define BLOCK_SIZE 4092 

source/kernel/memory/TaskStateSegment.h

@@ -1,6 +1,6 @@
 #pragma once
 #include "gdt/gdtc.h"
-#include "../../lib/include/string.h"
+#include <CoreLib/Memory.h>
 
 struct TaskStateSegment {
     uint32_t prev_tss;

source/kernel/memory/memory.h

@@ -5,7 +5,8 @@
 #include "memoryinfo.h"
 #include "../prekernel/multiboot.h"
 #include "../terminal/kterm.h"
-#include "../../lib/include/mem.h"
+#include <CoreLib/Memory.h>
+
 #include "../bitmap.h"
 
 #define BLOCK_SIZE 4092

source/kernel/supervisorterminal/superVisorTerminal.h

@@ -4,8 +4,6 @@
 #include "../drivers/pit/pit.h"
 #include "../drivers/ps-2/keyboard.h"
 #include "../memory/PhysicalMemoryManager.h"
-extern "C" {
+#include <CoreLib/Memory.h>
-    #include "../../lib/include/string.h"
-}
 
 extern "C" void startSuperVisorTerminal();

source/kernel/terminal/kterm.h

@@ -5,10 +5,7 @@
 
 #include "../drivers/vga/colors.h"
 #include "../drivers/io/io.h"
-extern "C" {
+#include "CoreLib/Memory.h"
-#include "../../lib/include/string.h"
-}
-
 
 void kterm_init();
 

source/kernel/vfs/Path.cpp

@@ -1,83 +0,0 @@
-//
-// Created by nigel on 19/02/23.
-//
-#include "Path.h"
-#include "../memory/KernelHeap.h"
-String::String(char* characters)
-: chars(characters)
-{
-
-}
-
-char* String::str(){
-    return chars;
-}
-
-unsigned int String::length ()
-{
-    int i = 0;
-
-    while (  chars[i] != '\0'){
-        i++;
-    }
-
-    return i;
-}
-
-// Returns a null character if size exceeds limits
-char String::operator[] (size_t idx)
-{
-    if( idx  > this->length())
-        return '\0';
-
-    return chars[idx];
-}
-
-const char String::operator[](size_t idx) const {
-    return (const char) chars[idx];
-}
-
-StringView::StringView(String &string, unsigned int start, unsigned int end)
-: String(string), begin(start), end(end)
-{
-
-}
-
-char* StringView::str(){
-    char* str = (char*) malloc((this->length() * sizeof(char))+1);
-
-    int index = 0;
-    for ( int i = begin; i < end ; i++){
-        str[index] = chars[i];
-        index++;
-    }
-    chars[index+1] ='\0';
-    return str;
-}
-
-
-Path::Path(char *path)
-: path(String(path))
-{
-
-}
-
-Path::Path(String &path)
-: path(path)
-{
-
-}
-
-StringView Path::getbasename()
-{
-    unsigned int path_length = path.length();
-    int i = path_length;
-    while (path[i] != '/')
-        i--;
-
-    return StringView(path,i +1, path_length);
-}
-
-char* Path::str() {
-    return path.str();
-}

source/kernel/vfs/Path.h

@@ -1,46 +0,0 @@
-//
-// Created by nigel on 19/02/23.
-//
-#pragma once
-#include <stddef.h>
-
-class  String {
-public:
-    String(char* characters);
-    String(String&) = default;
-    unsigned int length();
-
-    char* str ();
-    char operator[](size_t index) ;
-    const char operator[](size_t idx) const;
-
-protected:
-    char* chars;
-
-
-};
-
-class StringView : String {
-public:
-    StringView(String& string, unsigned int start, unsigned  int end );
-    char* str ();
-private:
-    unsigned int begin;
-    unsigned int end;
-};
-
-class Path{
-public:
-    Path(String& path);
-    Path(char* path);
-
-    StringView getbasename();
-
-    char* str();
-
-private:
-    String path;
-
-};
-
-

source/kernel/vfs/VFS.cpp

@@ -4,7 +4,7 @@
 #include "../drivers/ata/ataDevice.h"
 #include "../partitiontable/mbr/MasterBootRecord.h"
 #include "../memory/KernelHeap.h"
-#include "Path.h"
+#include "../../CoreLib/Memory.h"
 #include "../filesystem/FAT/DirectoryEntry.h"
 
 MOUNT_INFO mountInfo;
@@ -389,6 +389,8 @@ char* FindNextEntryName (char* path )
 
 void FileSystem::ResolvePath(Path &path)
 {
+    // See reference material (1) https://man7.org/linux/man-pages/man7/path_resolution.7.html
+
     char* string_path  = path.str();
     void* cpy = string_path;
 
@@ -410,9 +412,6 @@ void FileSystem::ResolvePath(Path &path)
     skip = strlen(entry_name);
     free(entry_name);
 
-
-
-
     free(cpy);
 
 }

source/kernel/vfs/VFS.h

@@ -1,6 +1,6 @@
 #pragma once
 #include <stdint.h>
-#include "Path.h"
+#include "../../CoreLib/Path.h"
 
 #define FS_FILE 0
 #define FS_DIRECTORY 1

source/lib/include/mem.h

@@ -1,31 +0,0 @@
-#pragma once
-// NOTE: These should not be inline 
-inline void* memset (void* ptr, int value, size_t num)
-{
-    for( int i = 0; i < num; i++ )
-    {
-        unsigned char* data  = (unsigned char*)ptr+ i;
-        *data = (unsigned char)value;
-    }
-    return ptr;
-}
-
-
-
-inline int memcmp( const void* ptr1, const void* ptr2, size_t num)
-{
-    const unsigned char * cs = (const unsigned char*) ptr1;
-    const unsigned char * ct = (const unsigned char*) ptr2;
-
-
-    for (int i = 0 ; i < num ; i++, cs++, ct++ ){
-       if( *cs < *ct){
-           return -1;
-       } else if( *cs > *ct){
-           return 1;
-       }
-    }
-
-    return 0;
-
-}

source/lib/include/string.c

@@ -1,26 +0,0 @@
-#include "string.h"
-
-size_t strlen(const char* str) {
-    size_t len = 0;
-    while(str[len]){
-        len++;
-    }
-    return len;
-}
-
-int strncmp ( const char* str1, const char* str2, size_t num ){
-    for( int i = 0; i < num ; i++){
-        
-        if( str1[i] < str2[i]){
-            return -1;
-        } 
-
-        if( str1[i] > str2[i] ){
-            return 1;
-        }
-
-
-    }
-
-    return 0;
-}

source/lib/include/string.h

@@ -1,4 +0,0 @@
-#pragma once
-#include <stddef.h>
-size_t strlen(const char* str);
-int strncmp ( const char* str1, const char* str2, size_t num );