Merge branch 'master' into boot

.gitignore

@@ -1,11 +1,15 @@
 # Prerequisites
 *.d
 
+# Test files
+test-*.c
+
 # Object files
 *.o
 *.ko
 *.obj
 *.elf
+*.S
 
 # Linker output
 *.ilk

ChangeLog

@@ -14,6 +14,6 @@
 2018/12/06  - Actually started project, began MBR, decided directories organization, created this file and others
 2018/12/08  - MBR actually supports Long Mode Compatibility Verification
             - Added A20 line Enabling to MBR
-2018/12/21  - Boot is now in two stages. First stage is 512 MBR code that loads second stage loader from FAT16. 
+2018/12/21  - Boot is now in two stages. First stage is 512B MBR code that loads second stage loader from FAT16.
               That second stage loader enables A20, switches into long mode and write colored text =D
 

Makefile

@@ -0,0 +1,27 @@
+#----------------------------------------------------------------------------#
+#                           GNU GPL OS/K                                     #
+#                                                                            #
+#  Authors:    spectral`                                                     #
+#              NeoX                                                          #
+#                                                                            #
+#  Desc:       Project Makefile                                              #
+#----------------------------------------------------------------------------#
+
+kernel:
+	cpp ./Makefile.in > Makefile.out
+	python ./build/idttool.py
+	make kernel -f Makefile.out.2
+	rm Makefile.out Makefile.out.2
+
+kernel-asm:
+	cpp -D_TO_ASM ./Makefile.in > Makefile.out
+	python ./build/idttool.py
+	make kernel -f Makefile.out.2
+	rm Makefile.out Makefile.out.2
+
+tests:
+	cpp -D_TESTS ./Makefile.in > Makefile.out
+	python ./build/idttool.py
+	make tests -f Makefile.out.2
+	rm Makefile.out Makefile.out.2
+

Makefile.in

@@ -0,0 +1,107 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Authors:    spectral`                                                     //
+//              NeoX                                                          //
+//                                                                            //
+//  Desc:       Project Makefile                                              //
+//----------------------------------------------------------------------------//
+
+// The madman's Makefile
+#include "build/preproc.h"
+
+CCNAME="/opt/cross-cc/bin/x86_64-elf-gcc"
+CC2NAME=gcc
+COPTIM=-O2
+CWARNS=-Wall -Wextra -Wshadow -Wpedantic
+CINCLUDES=-isystem./kaleid/include
+
+CFLAGS1=-std=gnu11 -nostdlib -ffreestanding -mcmodel=large
+CFLAGS2=-m64 -masm=intel -mno-red-zone -mno-mmx -mno-sse -mno-sse2
+CFLAGS=$(CFLAGS1) $(CFLAGS2) $(SFLAG)
+
+CC=$(CCNAME) $(COPTIM) $(CWARNS) $(CFLAGS) $(CINCLUDES)
+
+ASM=nasm
+ASMFLAGS=
+BOOTFLAGS=-f bin
+
+BINDIR=./build/bin
+OBJDIR=./build/obj
+
+BOOTDIR=boot
+COMMDIR=kaleid/common
+KERNDIR=kaleid/kernel
+SYSTDIR=kaleid/system
+LINXDIR=kaleid/common/test
+
+all: bootloader kernel
+
+boot.mbr.s: $(BOOTDIR)/mbr.s $(BOOTDIR)/mbr.inc
+	$(ASM) $(BOOTFLAGS) $(BOOTDIR)/mbr.asm -o $(OBJDIR)/boot/mbr.bin
+
+boot.loader.s: $(BOOTDIR)/loader.s
+	$(ASM) $(BOOTFLAGS) $(BOOTDIR)/loader.asm -o $(OBJDIR)/boot/loader.bin
+
+bootloader: boot.mbr.s boot.loader.s
+	cp $(OBJDIR)/boot/mbr.bin $(BINDIR)/mbr.bin
+	cp $(OBJDIR)/boot/loader.bin $(BINDIR)/loader.bin
+
+//----------------------------------------------------------------------------#
+// TESTING MAKEFILE
+
+pseudo_kern:
+	$(ASM) $(BOOTFLAGS) $(BOOTDIR)/pseudo_kernel.s -o $(OBJDIR)/boot/pkernel.bin
+
+testing: bootloader pseudo_kern
+	cat $(BINDIR)/bootloader.bin $(OBJDIR)/boot/pkernel.bin > $(BINDIR)/boot.bin
+
+//----------------------------------------------------------------------------#
+// COMMON MAKEFILE
+
+COBJDIR=$(OBJDIR)/$(COMMDIR)
+LOBJDIR=$(OBJDIR)/$(LINXDIR)
+
+COMMOBJS=COBJ6(string, status, rand, memory, arith, strtol) COBJ4(itoa, ltoa, utoa, ultoa) COBJ4(atoi, atol, atou, atoul)
+
+TCC=$(CC2NAME) $(COPTIM) $(CWARNS) $(CINCLUDES)
+KCC=$(CC) -T ./build/kernel.ld -D_OSK_SOURCE -D_KALEID_KERNEL
+
+comm-convert:
+	COMPILE_CONVRT1(itoa)  -D_NEED_ITOA
+	COMPILE_CONVRT1(ltoa)  -D_NEED_LTOA
+	COMPILE_CONVRT1(utoa)  -D_NEED_UTOA
+	COMPILE_CONVRT1(ultoa) -D_NEED_ULTOA
+	COMPILE_CONVRT2(atoi)  -D_NEED_ATOI
+	COMPILE_CONVRT2(atol)  -D_NEED_ATOL
+	COMPILE_CONVRT2(atou)  -D_NEED_ATOU
+	COMPILE_CONVRT2(atoul) -D_NEED_ATOUL
+
+common: comm-convert
+	COMPILE_COMMON(rand)
+	COMPILE_COMMON(arith)
+	COMPILE_COMMON(string)
+	COMPILE_COMMON(status)
+	COMPILE_COMMON(memory)
+	COMPILE_COMMON(strtol)
+
+tests: common
+	$(TCC) -c $(LINXDIR)/test-common.c -o $(LOBJDIR)/test-common.o
+	$(TCC) $(COMMOBJS) $(LOBJDIR)/test-common.o -o $(BINDIR)/kaleid-common.elf
+
+//----------------------------------------------------------------------------#
+// KERNEL MAKEFILE
+
+KOBJDIR=$(OBJDIR)/$(KERNDIR)
+
+KERNOBJS=KOBJ4(init/init, init/table, ke/panic, ke/terminal)
+
+kernel: common
+	COMPILE_KERNEL(init/init)
+	COMPILE_KERNEL(init/table)
+	COMPILE_KERNEL(ke/panic)
+	COMPILE_KERNEL(ke/terminal)
+	LINK_KERNEL(kaleid-kernel.elf)
+
+//----------------------------------------------------------------------------#
+

ProjectTree

@@ -0,0 +1,107 @@
+#------------------------------------------------------------------------------#
+#                                 GNU GPL OS/K                                 #
+#                                                                              #
+#  Authors:    spectral`                                                       #
+#              NeoX                                                            #
+#                                                                              #
+#  Desc:       Project Tree                                                    #
+#------------------------------------------------------------------------------#
+
+src/
+    |
+    x COPYING
+    x README.md
+    x ChangeLog
+    |
+    - Makefile
+    - Makefile.in
+    |
+    + boot/
+    |   |
+    |   x folder.desc
+    |   |
+    |   - mbr.asm
+    |   - mbr.inc
+    |   |
+    |   - loader.asm
+    |   - loader16.inc
+    |   - loader64.inc
+    |   |
+    |   0
+    |
+    + kaleid/
+    |   |
+    |   + include/
+    |   |   |
+    |   |   - kaleid.h
+    |   |   - kalkern.h
+    |   |   |
+    |   |   + common/
+    |   |   |   |
+    |   |   |   - kaldefs.h
+    |   |   |   - kaltypes.h
+    |   |   |   - kalerror.h
+    |   |   |   - kalassrt.h
+    |   |   |   - kallims.h
+    |   |   |   - kalmask.h
+    |   |   |   - kalcrt.h
+    |   |   |   |
+    |   |   |   0
+    |   |   |
+    |   |   + kernel/
+    |   |   |   |
+    |   |   |   - kernbase.h
+    |   |   |   - kernlocks.h
+    |   |   |   - kernterm.h
+    |   |   |   |
+    |   |   |   0
+    |   |   0
+    |   |
+    |   |
+    |   + kernel/
+    |   |   |
+    |   |   - kernel.ld
+    |   |   |
+    |   |   + init/
+    |   |   |   |
+    |   |   |   - init.c
+    |   |   |   |
+    |   |   |   0
+    |   |   |
+    |   |   + ke/
+    |   |   |   |
+    |   |   |   - panic.c
+    |   |   |   - table.c
+    |   |   |   - terminal.c
+    |   |   |   |
+    |   |   |   0
+    |   |   0
+    |   |
+    |   + common/
+    |   |   |
+    |   |   - status.c
+    |   |   |
+    |   |   - arith.c
+    |   |   - rand.c
+    |   |   |
+    |   |   - atoi.c
+    |   |   - itoa.c
+    |   |   - strtol.c
+    |   |   |
+    |   |   - memory.c
+    |   |   - string.c
+    |   |   - sprintf.c
+    |   |   |
+    |   |   0
+    |   0
+    |
+    + build/
+    |   |
+    |   - preproc.h
+    |   - iddtool.h
+    |   |
+    |   + bin/
+    |   + obj/
+    |   |
+    |   0
+    0

README.md

@@ -1,11 +0,0 @@
-# GNU-GPL OS/K (OS on Kaleid)
-
-Fully open-source operating system from scratch (WIP), released under the GNU GPL version 3.0
-
-Branch boot : Development focused on the bootloader of OS/K
-
-For changelog, see src/ChangeLog. 
-
-For structure of the sources, see src/project-tree.txt. 
-
-For code conventions, see src/project-style.txt.

Readme.md

@@ -0,0 +1,12 @@
+# GNU-GPL OS/K (OS on Kaleid)
+
+Fully open-source operating system from scratch (WIP), released under the GNU GPL version 3.0
+
+Branch kaleid : Development focused on the Kaleid Kernel.
+
+For changelog, see ChangeLog.
+
+For structure of the sources, see src/project-tree.txt.
+
+Note that every file within OS/K is written using spaces for tabulation, with each
+tabulation being 4 spaces long.

boot/folder.desc

@@ -0,0 +1,23 @@
+---------------------------------------------------------------------
+                           GNU GPL OS/K
+
+  Authors:    spectral`
+              NeoX
+
+  Desc:       Folder description - "boot"
+---------------------------------------------------------------------
+
+
+This folder contains the source for OS/K's bootloader.
+OS/K being intended to only run on x86-64 systems, we have not divided
+this folder into one sub-folder per architecture.
+
+It is divided in two parts each of exactly 512 bytes:
+    - mbr.s (and its auxiliary file mbr.inc)
+        This is our Master Boot Record (MBR). It switches to long mode
+        (64 bits mode) then loads the second half of the bootloader.
+        The MBR must be placed precisely on the first sector of the hard drive.
+
+    - loader.s
+        This is the Kernel Loader.      XXX
+

build/idttool.py

@@ -0,0 +1,14 @@
+# don't mind this file
+
+f1 = open("Makefile.out", "r+")
+f2 = open("Makefile.out.2", "w+")
+
+fl = f1.readlines()
+for ln in fl:
+    if ln[0] == ' ' and ln[1] != ' ':
+        f2.write('\t')
+    f2.write(ln)
+
+f1.close()
+f2.close()
+

build/kernel.ld

@@ -1,9 +1,9 @@
-ENTRY(kstart)
+ENTRY(StartKern)
 SECTIONS
 {
-    . = 0x4000; /* XXX 0x4000 is temporary */
+    . = 1M;
 
-    .text : AT(ADDR(.text) - 0x4000)
+    .text : AT(ADDR(.text) - 1M)
     {
         _code = .;
         *(.text)
@@ -11,21 +11,21 @@ SECTIONS
         . = ALIGN(4096);
     }
 
-   .data : AT(ADDR(.data) - 0x4000)
+   .data : AT(ADDR(.data) - 1M)
    {
         _data = .;
         *(.data)
         . = ALIGN(4096);
    }
 
-   .eh_frame : AT(ADDR(.eh_frame) - 0x4000)
+   .eh_frame : AT(ADDR(.eh_frame) - 1M)
    {
        _ehframe = .;
        *(.eh_frame)
         . = ALIGN(4096);
    }
 
-   .bss : AT(ADDR(.bss) - 0x4000)
+   .bss : AT(ADDR(.bss) - 1M)
    {
        _bss = .;
        *(.bss)

build/preproc.h

@@ -0,0 +1,42 @@
+// be careful with this file
+
+#ifdef _TESTS
+#	define CCC TCC
+#else
+#	define CCC KCC
+#endif
+
+#ifdef _TO_ASM
+#	define _CSPREF -S
+#	define _OUTFIX S
+#   define LINK_KERNEL(out)
+#else
+#	define _CSPREF -c
+#	define _OUTFIX o
+#   define LINK_KERNEL(out) $(KCC) $(CLDSCR) $(COMMOBJS) $(KERNOBJS) -o $(BINDIR)/out
+#endif
+
+#define COMPILE_CONVRT1(file) $(CCC) _CSPREF $(COMMDIR)/itoa.c    -o $(COBJDIR)/file._OUTFIX
+#define COMPILE_CONVRT2(file) $(CCC) _CSPREF $(COMMDIR)/atoi.c    -o $(COBJDIR)/file._OUTFIX
+
+#define COMPILE_COMMON(file) $(CCC) _CSPREF $(COMMDIR)/file.c    -o $(COBJDIR)/file._OUTFIX
+#define COMPILE_KERNEL(file) $(KCC) _CSPREF $(KERNDIR)/file.c    -o $(KOBJDIR)/file._OUTFIX
+
+#define COBJ1(x1)                                                   $(COBJDIR)/x1.o
+#define COBJ2(x1,x2)                    COBJ1(x1)                   $(COBJDIR)/x2.o
+#define COBJ3(x1,x2,x3)                 COBJ2(x1,x2)                $(COBJDIR)/x3.o
+#define COBJ4(x1,x2,x3,x4)              COBJ3(x1,x2,x3)             $(COBJDIR)/x4.o
+#define COBJ5(x1,x2,x3,x4,x5)           COBJ4(x1,x2,x3,x4)          $(COBJDIR)/x5.o
+#define COBJ6(x1,x2,x3,x4,x5,x6)        COBJ5(x1,x2,x3,x4,x5)       $(COBJDIR)/x6.o
+#define COBJ7(x1,x2,x3,x4,x5,x6,x7)     COBJ6(x1,x2,x3,x4,x5,x6)    $(COBJDIR)/x7.o
+#define COBJ8(x1,x2,x3,x4,x5,x6,x7,x8)  COBJ7(x1,x2,x3,x4,x5,x6,x7) $(COBJDIR)/x8.o
+
+#define KOBJ1(x1)                                                   $(KOBJDIR)/x1.o
+#define KOBJ2(x1,x2)                    KOBJ1(x1)                   $(KOBJDIR)/x2.o
+#define KOBJ3(x1,x2,x3)                 KOBJ2(x1,x2)                $(KOBJDIR)/x3.o
+#define KOBJ4(x1,x2,x3,x4)              KOBJ3(x1,x2,x3)             $(KOBJDIR)/x4.o
+#define KOBJ5(x1,x2,x3,x4,x5)           KOBJ4(x1,x2,x3,x4)          $(KOBJDIR)/x5.o
+#define KOBJ6(x1,x2,x3,x4,x5,x6)        KOBJ5(x1,x2,x3,x4,x5)       $(KOBJDIR)/x6.o
+#define KOBJ7(x1,x2,x3,x4,x5,x6,x7)     KOBJ6(x1,x2,x3,x4,x5,x6)    $(KOBJDIR)/x7.o
+#define KOBJ8(x1,x2,x3,x4,x5,x6,x7,x8)  KOBJ7(x1,x2,x3,x4,x5,x6,x7) $(KOBJDIR)/x8.o
+

kaleid/common/arith.c

@@ -4,18 +4,30 @@
 //  Authors:    spectral`                                                     //
 //              NeoX                                                          //
 //                                                                            //
-//  Desc:       Ports I/O                                                     //
+//  Desc:       Arithmetical functions                                        //
 //----------------------------------------------------------------------------//
 
-#ifndef _KALKERN_IO_PORTS_H
+// do not mask anything
-#define _KALKERN_IO_PORTS_H
+#define _KALMASK_H
+#include <kaleid.h>
 
-#include "common/common.h"
+int _osk_abs(int x)
+{
+    return abs(x);
+}
 
-#define outb(port,val) asm volatile ("outb %1, %0" : : "dN" (port), "a" (value))
+long _osk_labs(long x)
+{
+    return labs(x);
+}
 
-uchar  inb(port_t); 
+div_t _osk_div(int x, int y)
-ushort inw(port_t);
+{
+    return div(x, y);
+}
 
-#endif
+ldiv_t _osk_ldiv(long x, long y)
+{
+    return ldiv(x, y);
+}
 

kaleid/common/atoi.c

@@ -0,0 +1,37 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Authors:    spectral`                                                     //
+//              NeoX                                                          //
+//                                                                            //
+//  Desc:       Conversion utilities - atoi family                            //
+//----------------------------------------------------------------------------//
+
+#include <kaleid.h>
+
+//
+// String to integer
+// Do not change errno
+//
+#define _ATOI_IMPL(_Name, _Type, _Func)             \
+    _Type _Name(const char *str) {                  \
+        error_t old = errno;                        \
+        _Type ret = (_Type)_Func(str, NULL, 0);     \
+        errno = old;                                \
+        return ret;                                 \
+    }
+
+
+// ISO C does not allow extra ‘;’ outside of a function
+#if defined(_NEED_ATOI)
+_ATOI_IMPL(atoi, int, strtol)
+#elif defined(_NEED_ATOL)
+_ATOI_IMPL(atol, long, strtol)
+#elif defined(_NEED_ATOU)
+_ATOI_IMPL(atou, uint, strtoul)
+#elif defined(_NEED_ATOUL)
+_ATOI_IMPL(atoul, ulong, strtoul)
+#else
+#error "What am I supposed to declare?"
+#endif
+

kaleid/common/itoa.c

@@ -4,49 +4,78 @@
 //  Authors:    spectral`                                                     //
 //              NeoX                                                          //
 //                                                                            //
-//  Desc:       Conversion utilities                                          //
+//  Desc:       Conversion utilities - itoa family                            //
 //----------------------------------------------------------------------------//
 
-#include "common/convert.h"
+#include <kaleid.h>
 
 //
-//  Digits table for bases <=36
+// Digits table for bases <=36
 //
-static const char digits[36] =
+static const char digits[] =
-        "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+        "0123456789abcdefghijklmnopqrstuvwxyz";
-
 //
-//  Integer to string in any base between 2 and 36 (included)
+// Integer to string in any base between 2 and 36 (included)
 //
+#if defined(_NEED_ITOA)
 char *itoa(int i, char *str, int base)
+#elif defined(_NEED_LTOA)
+char *ltoa(long i, char *str, int base)
+#elif defined(_NEED_UTOA)
+char *utoa(uint i, char *str, int base)
+#elif defined(_NEED_ULTOA)
+char *ultoa(ulong i, char *str, int base)
+#else
+#error "What am I supposed to declare?"
+#endif
 {
+#if defined(_NEED_ITOA) || defined(_NEED_LTOA)
     int neg = 0;
+#endif
+
     char *orig = str;
 
+    //
+    // Only handle base 2 -> 36
+    //
     if (base < 2 || base > 36)
         return NULL;
 
-    // deal with negatives
+#if defined(_NEED_ITOA) || defined(_NEED_LTOA)
+    //
+    // Deal with negatives
+    //
     if (i < 0) {
         neg = 1;
         i = -i;
     }
+#endif
 
-    // deal with zero separatly
+    //
+    // Deal with zero separately
+    //
     if (i == 0) {
         *str++ = '0';
     }
 
-    // compute digits... in reverse order
+    //
+    // Compute digits... in reverse order
+    //
     while (i > 0) {
         *str++ = digits[i % base];
         i /= base;
     }
 
+#if defined(_NEED_ITOA) || defined(_NEED_LTOA)
     if (neg) *str++ = '-';
+#endif
+
     *str = '\0';
 
-    return reverse(orig);
+    //
+    // Reverse the string
+    //
+    return strrev2(orig);
 }
 
 

kaleid/common/memory.c

@@ -0,0 +1,245 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Authors:    spectral`                                                     //
+//              NeoX                                                          //
+//                                                                            //
+//  Desc:       mem*() functions                                              //
+//----------------------------------------------------------------------------//
+
+#include <kaleid.h>
+
+//------------------------------------------//
+//            memset() family               //
+//------------------------------------------//
+
+//
+// Set "bytes"-many bytes starting from ptr to val
+//
+void *memset(void *ptr, int val, size_t bytes)
+{
+    uchar *uptr = (uchar *)ptr;
+
+    //
+    // Deal with bytes before start of the first aligned qword
+    //
+    while (((ulong)uptr % QWORD_ALIGN) > 0 && bytes--) {
+        *uptr++ = (uchar)val;
+    }
+
+    //
+    // At this point we're qword-aligned
+    //
+    if (bytes > QWORD_SIZE) {
+        const ulong uval = ((ulong)val << 56) | ((ulong)val << 48)
+                         | ((ulong)val << 40) | ((ulong)val << 32)
+                         | ((ulong)val << 24) | ((ulong)val << 16)
+                         | ((ulong)val <<  8) | ((ulong)val);
+
+        ulong *uqptr = (ulong *)ptr;
+
+        //
+        // Moving fast, qword by qword
+        //
+        while (bytes > QWORD_SIZE) {
+            *uqptr++ = uval;
+            bytes -= QWORD_SIZE;
+        }
+
+        uptr = (uchar *)(ulong)uqptr;
+    }
+
+    //
+    // Deal with the few remaining bytes
+    //
+    while (bytes--) *uptr++ = (uchar)val;
+
+    return ptr;
+}
+
+//
+//  Set "words"-many words starting from ptr to val
+//
+void *memsetw(void *ptr, int val, size_t words)
+{
+    ushort *uptr = (ushort *)ptr;
+
+    //
+    // Check whether we can we do this an aligned way
+    //
+    if unlikely (((ulong)uptr % WORD_ALIGN) > 0) {
+        //
+        // We can't, so we write word by word all the way up
+        //
+        while (words--) *uptr++ = (ushort)val;
+        return uptr;
+    }
+
+    while (((ulong)uptr % QWORD_ALIGN) > 0 && words--) {
+        *uptr++ = (ushort)val;
+    }
+
+    if (words > QWORDS_TO_WORDS(1)) {
+        const ulong uval = ((ulong)val << 48) | ((ulong)val << 32)
+                         | ((ulong)val << 16) | ((ulong)val);
+
+        ulong *uqptr = (ulong *)uptr;
+
+        while (words > QWORDS_TO_WORDS(1)) {
+            words -= QWORDS_TO_WORDS(1);
+            *uqptr++ = uval;
+        }
+
+        uptr = (ushort *)(ulong)uqptr;
+    }
+
+    while (words--) *uptr++ = (ushort)val;
+
+    return ptr;
+}
+
+//
+//  Set "dwords"-many dwords starting from ptr to val
+//  XXX unimplemented
+//
+void *memsetd(void *ptr, int val, size_t dwords)
+{
+    (void)val;
+    (void)dwords;
+
+    return ptr;
+}
+
+//
+//  Set "qwords"-many qwords starting from ptr to val
+//
+void *memsetq(void *ptr, long val, size_t qwords)
+{
+    ulong *uptr = (ulong *)ptr;
+
+    //
+    // There's no need to check for alignment
+    //
+    while (qwords--) *uptr++ = (ulong)val;
+
+    return ptr;
+}
+
+//------------------------------------------//
+//          Other mem*() functions          //
+//------------------------------------------//
+
+//
+//  Set "bytes"-many bytes starting from ptr to 0
+//
+void *memzero(void *ptr, size_t bytes)
+{
+    return memsetb(ptr, 0, bytes);
+}
+
+//
+//  Copy "bytes"-many bytes of src to dst
+//  Does not deal with overlapping blocks (memmove's job)
+//
+void *memcpy(void *restrict dst, const void *restrict src, size_t bytes)
+{
+    const ulong  *usrc = (const ulong  *)src;
+    ulong        *udst = (ulong        *)dst;
+
+    if unlikely (bytes == 0) return dst;
+
+    //
+    // Can align both src and dst at once at once?
+    //
+    if unlikely ((ulong)src % WORD_ALIGN == 1
+              && (ulong)dst % WORD_ALIGN == 1) {
+        const uchar *ubsrc = (const uchar *)usrc;
+        uchar       *ubdst = (uchar       *)udst;
+
+        //
+        // Yes we can, we're guaranteed to be word-aligned now
+        //
+        *ubdst++ = *ubsrc++;
+        bytes--;
+
+        udst = (ulong *)ubdst;
+        usrc = (ulong *)ubsrc;
+    }
+
+    const ushort *uwsrc = (const ushort *)usrc;
+    ushort       *uwdst = (ushort       *)udst;
+
+    //
+    // Align either dst or src for qword access
+    //
+    while ((ulong)dst % QWORD_ALIGN > 0
+        && (ulong)src % QWORD_ALIGN > 0
+        && bytes > WORD_SIZE) {
+
+        *uwdst++ = *uwsrc++;
+        bytes -= WORD_SIZE;
+    }
+
+    udst = (ulong *)uwdst;
+    usrc = (ulong *)uwsrc;
+
+    //
+    // This should be most of the job
+    //
+    while (bytes > QWORD_SIZE) {
+        *udst++ = *usrc++;
+        bytes -= QWORD_SIZE;
+    }
+
+    const uchar  *ubsrc = (const uchar  *)usrc;
+    ushort       *ubdst = (ushort       *)udst;
+
+    //
+    // Deal with the few bytes left
+    //
+    while (bytes--) *ubdst ++ = *ubsrc++;
+
+    return dst;
+}
+
+//
+//  Move memory from src to dest, even if they overlap
+//
+void *memmove(void *dst, const void *src, size_t bytes)
+{
+    const uchar *usrc = src;
+    uchar       *udst = dst;
+
+    //
+    // Can we use memcpy() safely?
+    //
+    if (udst < usrc) {
+        return memcpy(dst, src, bytes);
+    }
+
+    //
+    // No, so we go backwards
+    //
+    uchar *usrc_end = (uchar *)usrc + bytes - 1;
+    uchar *udst_end = udst + bytes - 1;
+    while (bytes--) *udst_end-- = *usrc_end--;
+
+    return dst;
+}
+
+//
+//  Compare memory areas
+//
+int memcmp(const void *ptr1, const void *ptr2, size_t bytes)
+{
+    const uchar *uptr1 = ptr1;
+    const uchar *uptr2 = ptr2;
+
+    while (bytes--) {
+        if (*uptr1++ != *uptr2++) {
+            return uptr1[-1] < uptr2[-1] ? -1 : 1;
+        }
+    }
+
+    return 0;
+}

kaleid/common/rand.c

@@ -0,0 +1,34 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Authors:    spectral`                                                     //
+//              NeoX                                                          //
+//                                                                            //
+//  Desc:       RNG related functions                                         //
+//----------------------------------------------------------------------------//
+
+#include <kaleid.h>
+
+//
+// Seed value
+//
+static ulong next = 7756;
+
+//
+// Returns a pseudo-random integer
+// To be improved
+//
+int rand(void)
+{
+    next = next * 1103515245 + 12345;
+    return (uint)(next / 65536) % INT_MAX;
+}
+
+//
+// (Re)Set the random seed
+//
+void srand(uint seed)
+{
+    next = (ulong)seed;
+}
+

kaleid/common/sprintf.c

@@ -7,10 +7,10 @@
 //  Desc:       sprintf()-related functions                                   //
 //----------------------------------------------------------------------------//
 
-#include "common/string.h"
+#include <kaleid.h>
 
 //
-//  Format str according to fmt using ellipsed arguments
+// Format str according to fmt using ellipsed arguments
 //
 int sprintf(char *str, const char *fmt, ...)
 {
@@ -30,8 +30,7 @@ int vsprintf(char *str, const char *fmt, va_list ap)
 }
 
 //
-//  (v)sprintf() but with a size limit: no more than n bytes are written in str
+// (v)sprintf() but with a size limit: no more than n bytes are written in str
-//      XXX null termination behavior?
 //
 int snprintf(char *str, size_t n, const char *fmt, ...)
 {
@@ -49,10 +48,17 @@ int vsnprintf(char *str, size_t n, const char *fmt, va_list ap)
 {
     int ret = 0;
 
-    while (*fmt && ret < n) {
+    //
+    // Go throught the format string
+    //
+    while (*fmt) {
         if (*fmt != '%') {
-            *str++ = *fmt++;
+            //
-            ret++;
+            // Even if we don't have any more room we still increase ret
+            //
+            if (ret++ < n) {
+                *str++ = *fmt++;
+            }
             continue;
         }
 

kaleid/common/status.c

@@ -7,8 +7,11 @@
 //  Desc:       Implementation of describe_status()                           //
 //----------------------------------------------------------------------------//
 
-#include "common/common.h"
+#include <kaleid.h>
 
+error_t errno = 0;
+
+/*
 static const char *descriptions[] = {
     [-SUCCESS]              = "Success",
     [-FAILED]               = "Failed (no precision)",
@@ -28,4 +31,4 @@ const char *describe_status(status_t status)
     // XXX
     return "";
 }
-
+*/

kaleid/common/string.c

@@ -0,0 +1,301 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Authors:    spectral`                                                     //
+//              NeoX                                                          //
+//                                                                            //
+//  Desc:       String-related functions                                      //
+//----------------------------------------------------------------------------//
+
+
+#include <kaleid.h>
+
+//
+// Compare two strings
+//
+int strcmp(const char *str1, const char *str2)
+{
+    while (*str1 == *str2 && *str2) str1++, str2++;
+
+    return *(uchar *)str1 - *(uchar *)str2;
+}
+
+//
+// Compare at most n bytes of two strings
+//
+int strncmp(const char *str1, const char *str2, size_t n)
+{
+    size_t it = 0;
+
+    while (*str1 == *str2 && *str2 && it < n) str1++, str2++, it++;
+
+    return *(uchar *)str1 - *(uchar *)str2;
+}
+
+//
+// Return str's length
+//
+size_t strlen(const char *str)
+{
+    const char *base = str;
+
+    while (*str) str++;
+
+    return str - base;
+}
+
+//
+// Return a pointer to the first occurence of ch in str,
+// or str's null-terminator if none is found
+//
+char *strchrnul(const char *str, int ch)
+{
+    while ((*str && *str != (char)ch)) str++;
+
+    return (char *)str;
+}
+
+//
+// Return a pointer to the first occurence of ch in str,
+// NULL if none is found
+//
+char *strchr(const char *str, int ch)
+{
+    while ((*str && *str != (char)ch)) str++;
+
+    return *str ? (char *)str : NULL;
+}
+
+//
+// Return a point to the last occurence of ch in str,
+// NULL if none is found
+//
+char *strrchr(const char *str, int ch)
+{
+    char *ptr = NULL;
+
+    while (*str) {
+        if (*str == ch) {
+            ptr = (char *)str;
+        }
+        str++;
+    }
+
+    return ptr;
+}
+
+//
+// Return the length of the longest inital segment of str
+// that only contains characters in acc
+//
+size_t strspn(const char *str, const char *acc)
+{
+    const char *ptr = str;
+
+    while (*ptr && strchr(acc, *ptr) != NULL) ptr++;
+
+    return ptr - str;
+}
+
+//
+// Return the length of the longest initial segment of str
+// that does not contain any character in rej
+//
+size_t strcspn(const char *str, const char *rej)
+{
+    const char *ptr = str;
+
+    while (*ptr && strchr(rej, *ptr) == NULL) ptr++;
+
+    return ptr - str;
+}
+
+//
+// Return the first occurence in str of any byte in acc
+//
+char *strpbrk(const char *str, const char *acc)
+{
+    str += strcspn(str, acc);
+
+    return *str ? (char *)str : NULL;
+}
+
+//
+// Return the first occurence of the substring needle
+// in the string haystack, NULL if none is found
+// Null-terminators aren't compared
+//
+char *strstr(const char *haystack, const char *needle)
+{
+    const size_t needle_size = strlen(needle);
+
+    //
+    // Moves haystack to first occurence of the needle's first byte
+    //
+    while ((haystack = strchr(haystack, *needle)) != NULL) {
+        if (strncmp(haystack, needle, needle_size) == 0) {
+            return (char *)haystack;
+        }
+    }
+
+    return NULL;
+}
+
+//
+// Tokenize a string, using saveptr as a savestate
+// We let a segmentation fault happen if *saveptr == NULL
+//
+char *strtok_r(char *restrict str, const char *restrict delim, char **restrict saveptr)
+{
+    assert(*saveptr != NULL);
+
+    if (str == NULL) str = *saveptr;
+
+    //
+    // Skip initial segments composed only of delimiters
+    //
+    str += strspn(str, delim);
+
+    //
+    // If str is empty, store it in saveptr so that next call
+    // still finds an empty strings and returns NULL
+    //
+    if (*str == 0) {
+        *saveptr = str;
+        return NULL;
+    }
+
+    char *ptr = str, *tok_end = strpbrk(str, delim);
+
+    //
+    // If we found the last token, set *saveptr to a str's null-terminator
+    // Otherwise, null-terminate token and save next byte
+    //
+
+    if (tok_end == NULL) {
+        while (*ptr) ptr++;
+        *saveptr = ptr;
+    }
+
+    else {
+        *tok_end = 0;
+        *saveptr = tok_end + 1;
+    }
+
+    return str;
+}
+
+//
+// Tokenize a string in a very thread-unsafe way
+//
+char *strtok(char *restrict str, const char *restrict delim)
+{
+    static char *saveptr = NULL;
+
+    KalAssert(FALSE);
+
+    if (str) saveptr = str;
+
+    return strtok_r(str, delim, &saveptr);
+}
+
+//
+// Copy the string src into dest
+//
+char *strcpy(char *restrict dest, const char *restrict src)
+{
+    char *base = dest;
+
+    while ((*dest++ = *src++));
+
+    return base;
+}
+
+//
+// strcpy() but always writes n bytes
+// Will not null-terminate for strings longer than n bytes
+//
+char *strncpy(char *restrict dest, const char *restrict src, size_t n)
+{
+    size_t it;
+
+    for (it = 0; it < n && src[it]; it++) {
+        dest[it] = src[it];
+    }
+
+    while (it < n) dest[it++] = 0;
+
+    return dest;
+}
+
+//
+// Copies at most n-1 bytes from src to dest, then fills
+// the rest with 0; dest[n] is guanranteed to be '\0'
+//
+// Returns TRUE if dest would have been null-terminated
+// by ordinary strncpy(), and FALSE otherwise
+//
+int xstrncpy(char *restrict dest, const char *restrict src, size_t n)
+{
+    size_t it;
+
+    for (it = 0; it < n - 1 && src[it]; it++) {
+        dest[it] = src[it];
+    }
+
+    //
+    // Was the copy complete?
+    //
+    if (it == n) {
+        if (dest[n] == 0) {
+            return TRUE;
+        }
+
+        dest[n] = 0;
+        return FALSE;
+    }
+
+    while (it < n) dest[it++] = 0;
+
+    return TRUE;
+}
+
+//
+// XXX strcat family
+//
+char   *strcat  (char *restrict, const char *restrict);
+char   *strncat (char *restrict, const char *restrict, size_t);
+int    *xstrncat(char *restrict, const char *restrict, size_t);
+
+//
+// Reverses the string src, putting the result into dest
+//
+char *strrev(char *restrict dest, const char *restrict src)
+{
+    char *orig = dest;
+    size_t n = strlen(src);
+
+    dest[n--] = '\0';
+
+    while ((*dest++ = src[n--]));
+
+    return orig;
+}
+
+//
+// Reverses a string, modifying it
+//
+char *strrev2(char *str)
+{
+    char ch, *orig = str;
+    size_t n = strlen(str);
+    char *temp = str + n - 1;
+
+    while (temp > str) {
+        ch = *temp;
+        *temp-- = *str;
+        *str++ = ch;
+    }
+
+    return orig;
+}

kaleid/common/strtol.c

@@ -4,16 +4,24 @@
 //  Authors:    spectral`                                                     //
 //              NeoX                                                          //
 //                                                                            //
-//  Desc:       Include file for init.c                                       //
+//  Desc:       strto(u)l functions                                           //
 //----------------------------------------------------------------------------//
 
-#ifndef _KALKERN_INIT_H
+#include <kaleid.h>
-#define _KALKERN_INIT_H
 
-#include "common/common.h"
+long strtol(const char *str, char **endp, int base) {
+    (void)str;
+    (void)endp;
+    (void)base;
+    errno = ENOSYS;
+    return 0;
+}
 
-// kernel entry point
+ulong strtoul(const char *str, char **endp, int base) {
-void kstart(void);
+    (void)str;
-
+    (void)endp;
-#endif
+    (void)base;
+    errno = ENOSYS;
+    return 0;
+}
 

kaleid/include/common/kalassrt.h

@@ -0,0 +1,108 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Authors:    spectral`                                                     //
+//              NeoX                                                          //
+//                                                                            //
+//  Desc:       Kaleid assert() support                                       //
+//----------------------------------------------------------------------------//
+
+#ifndef _KALASSRT_H
+#define _KALASSRT_H
+
+//------------------------------------------//
+//                 Macros                   //
+//------------------------------------------//
+
+#ifndef noreturn
+#define noreturn __attribute__((__noreturn__))
+#endif
+
+#ifndef unlikely
+#define unlikely(x) (__builtin_expect((x), 0))
+#endif
+
+#ifndef static_assert
+#define static_assert _Static_assert
+#endif
+
+//------------------------------------------//
+//          API compatibility checks        //
+//------------------------------------------//
+
+#define _SA_MSG "Incompatible type sizes"
+static_assert(sizeof(char)   == 1, _SA_MSG);
+static_assert(sizeof(short)  == 2, _SA_MSG);
+static_assert(sizeof(int)    == 4, _SA_MSG);
+static_assert(sizeof(long)   == 8, _SA_MSG);
+static_assert(sizeof(void *) == 8, _SA_MSG);
+#undef _SA_MSG
+
+//------------------------------------------//
+//              When debugging              //
+//------------------------------------------//
+
+#if !defined(_NO_DEBUG) && !defined(NDEBUG) && !defined(assert)
+
+#ifdef _OSK_SOURCE
+
+//
+// Failed assert handler
+//
+noreturn void _assert_handler(const char *, const char *, int, const char *);
+
+//
+// Checks whether (x) holds, if not call _assert_handler
+//
+#define assert(x)               \
+    do {                        \
+        if unlikely (!(x))      \
+            _assert_handler(#x, __FILE__, __LINE__, __func__);    \
+    } while (0);
+
+#else
+
+//
+// When not building for OS/K, use the system's assert
+//
+#include <assert.h>
+
+#endif
+
+//------------------------------------------//
+//           When not debugging             //
+//------------------------------------------//
+
+#else
+
+#ifndef NDEBUG
+#define NDEBUG 1
+#endif
+
+#ifndef _NO_DEBUG
+#define _NO_DEBUG 1
+#endif
+
+#ifndef assert
+#define assert(x) ((void)0)
+#endif
+
+#endif
+
+//------------------------------------------//
+//           Aliases for assert()           //
+//------------------------------------------//
+
+#ifndef Assert
+#define Assert assert
+#endif
+
+#ifndef KalAssert
+#define KalAssert assert
+#endif
+
+//------------------------------------------//
+//              End of header               //
+//------------------------------------------//
+
+#endif

kaleid/include/common/kalcrt.h

@@ -0,0 +1,225 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Authors:    spectral`                                                     //
+//              NeoX                                                          //
+//                                                                            //
+//  Desc:       Kaleid C runtime library                                      //
+//----------------------------------------------------------------------------//
+
+#ifndef _KALCRT_H
+#define _KALCRT_H
+
+//------------------------------------------//
+//               Typedefs                   //
+//------------------------------------------//
+
+#ifndef __error_t_defined
+#define __error_t_defined
+typedef int                 error_t;
+#endif
+
+#ifndef __size_t_defined
+#define __size_t_defined
+typedef unsigned long       size_t;
+#endif
+
+#ifndef __va_list_defined
+#define __va_list_defined
+typedef __builtin_va_list   va_list;
+#endif
+
+#ifndef __div_t_defined
+#define __div_t_defined
+typedef struct { int quot, rem; }   div_t;
+#endif
+
+#ifndef __ldiv_t_defined
+#define __ldiv_t_defined
+typedef struct { long quot, rem; }  ldiv_t;
+#endif
+
+//------------------------------------------//
+//              Global variables            //
+//------------------------------------------//
+
+extern error_t errno;
+
+//------------------------------------------//
+//                 Macros                   //
+//------------------------------------------//
+
+#ifndef _NO_MASK
+#define _NO_MASK
+#endif
+
+//------------------------------------------//
+//            va_list utilities             //
+//------------------------------------------//
+
+#ifndef va_start
+#define va_start    __builtin_va_start
+#endif
+
+#ifndef va_arg
+#define va_arg      __builtin_va_arg
+#endif
+
+#ifndef va_copy
+#define va_copy     __builtin_va_copy
+#endif
+
+#ifndef va_end
+#define va_end      __builtin_va_end
+#endif
+
+//------------------------------------------//
+//      Memory management utilities         //
+//------------------------------------------//
+
+#ifndef memsetb
+#define memsetb  memset
+#endif
+
+#ifndef memchrb
+#define memchrb  memchr
+#endif
+
+void   *memset(void *, int, size_t);
+void   *memsetw(void *, int, size_t);
+void   *memsetd(void *, int, size_t);
+void   *memsetq(void *, long, size_t);
+
+void   *memchr(const void *, int, size_t);
+void   *memchrw(const void *, int, size_t);
+void   *memchrd(const void *, int, size_t);
+void   *memchrq(const void *, long, size_t);
+
+void   *memrchr(const void *, int, size_t);
+
+void   *memcpy(void *restrict, const void *restrict, size_t);
+void   *memmove(void *, const void *, size_t);
+
+void   *memzero(void *, size_t);
+int     memcmp(const void *, const void *, size_t);
+
+//------------------------------------------//
+//      String manipulation utilities       //
+//------------------------------------------//
+
+size_t  strlen(const char *);
+size_t  strspn(const char *, const char *);
+size_t  strcspn(const char *, const char *);
+
+int     strcmp(const char *, const char *);
+int     strncmp(const char *, const char *, size_t);
+
+char   *strchr(const char *, int);
+char   *strrchr(const char *, int);
+char   *strchrnul(const char *, int);
+
+char   *strstr(const char *, const char *);
+char   *strpbrk(const char *, const char *);
+
+char   *strtok(char *restrict, const char *restrict);
+char   *strtok_r(char *restrict, const char *restrict, char **restrict);
+
+char   *strcpy  (char *restrict, const char *restrict);
+char   *strncpy (char *restrict, const char *restrict, size_t);
+int     xstrncpy(char *restrict, const char *restrict, size_t);
+
+char   *strcat  (char *restrict, const char *restrict);
+char   *strncat (char *restrict, const char *restrict, size_t);
+int    *xstrncat(char *restrict, const char *restrict, size_t);
+
+char   *strrev(char *restrict, const char *restrict);
+char   *strrev2(char *);
+
+int     sprintf(char *, const char *, ...);
+int     snprintf(char *, size_t, const char *, ...);
+int     vsprintf(char *, const char *, va_list);
+int     vsnprintf(char *, size_t, const char *, va_list);
+
+//------------------------------------------//
+//        Type conversion utilities         //
+//------------------------------------------//
+
+char    *itoa(int,  char *, int);
+char    *ltoa(long, char *, int);
+char    *utoa(unsigned int, char *, int);
+char    *ultoa(unsigned long, char *, int);
+
+int             atoi(const char *);
+long            atol(const char *);
+unsigned int    atou(const char *);
+unsigned long   atoul(const char *);
+
+long            strtol (const char *restrict, char **restrict, int);
+unsigned long   strtoul(const char *restrict, char **restrict, int);
+
+//------------------------------------------//
+//              RNG utilities               //
+//------------------------------------------//
+
+int     rand(void);
+void    srand(unsigned int);
+
+//------------------------------------------//
+//              Time utilities              //
+//------------------------------------------//
+
+//------------------------------------------//
+//            Diverse utilities             //
+//------------------------------------------//
+
+char    *strerror(int);
+char    *strsignal(int);
+
+//------------------------------------------//
+//           Arithmetical macros            //
+//------------------------------------------//
+
+#ifndef __abs
+#define __abs
+static inline int abs(int x)
+{
+    return x < 0 ? -x : x;
+}
+#endif
+
+#ifndef __labs
+#define __labs
+static inline long labs(long x)
+{
+    return x < 0 ? -x : x;
+}
+#endif
+
+#ifndef __div
+#define __div
+static inline div_t div(int __x, int __y)
+{
+    div_t __res;
+    __res.quot = __x/__y;
+    __res.rem  = __x%__y;
+    return __res;
+}
+#endif
+
+#ifndef __ldiv
+#define __ldiv
+static inline ldiv_t ldiv(long __x, long __y)
+{
+    ldiv_t __res;
+    __res.quot = __x/__y;
+    __res.rem  = __x%__y;
+    return __res;
+}
+#endif
+
+//------------------------------------------//
+//              End of header               //
+//------------------------------------------//
+
+#endif
+

kaleid/include/common/kaldefs.h

@@ -0,0 +1,92 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Authors:    spectral`                                                     //
+//              NeoX                                                          //
+//                                                                            //
+//  Desc:       Kaleid general preprocessor constants                         //
+//----------------------------------------------------------------------------//
+
+#ifndef _KALDEFS_H
+#define _KALDEFS_H
+
+//------------------------------------------//
+//            Actual constants              //
+//------------------------------------------//
+
+#ifndef TRUE
+#define TRUE 1
+#endif
+
+#ifndef FALSE
+#define FALSE 0
+#endif
+
+#ifndef NULL
+#define NULL ((void *)0)
+#endif
+
+#ifndef INITOK
+#define INITOK ((unsigned int)0xCAFEBABE)
+#endif
+
+//------------------------------------------//
+//                 Keywords                 //
+//------------------------------------------//
+
+#ifndef __alignof_is_defined
+#define __alignof_is_defined
+#define alignof _Alignof
+#endif
+
+#ifndef __alignas_is_defined
+#define __alignas_is_defined
+#define alignas _Alignas
+#endif
+
+#ifndef __bool_true_false_are_defined
+#define __bool_true_false_are_defined
+#   define bool    _Bool
+#   define true    1
+#   define false   0
+#   ifndef TRUE
+#       define TRUE 1
+#   endif
+#   ifndef FALSE
+#       define FALSE 0
+#   endif
+#endif
+
+//------------------------------------------//
+//           Attributes and macros          //
+//------------------------------------------//
+
+#ifndef PACKED
+#define PACKED __attribute__((__packed__))
+#endif
+
+#ifndef noreturn
+#define noreturn __attribute__((__noreturn__))
+#endif
+
+#ifndef likely
+#define likely(x)   (__builtin_expect((x), 1))
+#endif
+
+#ifndef unlikely
+#define unlikely(x) (__builtin_expect((x), 0))
+#endif
+
+//------------------------------------------//
+//           API specific macros            //
+//------------------------------------------//
+
+#ifndef KALAPI
+#   define KALAPI
+#endif
+
+//------------------------------------------//
+//              End of header               //
+//------------------------------------------//
+
+#endif

kaleid/include/common/kalerror.h

@@ -0,0 +1,63 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Authors:    spectral`                                                     //
+//              NeoX                                                          //
+//                                                                            //
+//  Desc:       Values for errno_t and errno                                  //
+//----------------------------------------------------------------------------//
+
+#ifndef _KALERROR_H
+#define _KALERROR_H
+
+//------------------------------------------//
+//          Preprocessor constants          //
+//------------------------------------------//
+
+// Everything went fine
+#define EOK                 0
+
+// Operation not permitted
+#define EPERM               1
+
+// No such file or directory
+#define ENOENT              2
+
+// No such process
+#define ESRCH               3
+
+// Syscall interrupted (e.g. by signal)
+#define EINTR               4
+
+// I/0 error
+#define EIO                 5
+
+// No such device or address
+#define ENXIO               6
+
+// Argument list too long
+#define E2BIG               7
+
+// Not an executable format
+#define ENOEXEC             8
+
+// Bad file number
+#define EBADF               9
+
+// Invalid argument
+#define EINVAL              22
+
+// Functionality not implemented
+#define ENOSYS              38
+
+// Component crashed
+#define ECRASH              500
+
+// System is panicking
+#define EPANIC              600
+
+//------------------------------------------//
+//              End of header               //
+//------------------------------------------//
+
+#endif

kaleid/include/common/kallims.h

@@ -0,0 +1,117 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Authors:    spectral`                                                     //
+//              NeoX                                                          //
+//                                                                            //
+//  Desc:       Kaleid type limits definitions                                //
+//----------------------------------------------------------------------------//
+
+#ifndef _KALLIMS_H
+#define _KALLIMS_H
+
+//------------------------------------------//
+//           Data sizes blocks              //
+//------------------------------------------//
+
+#ifndef DATA_SIZE_BLOCK
+#define DATA_SIZE_BLOCK
+#   define BYTE_SIZE        sizeof(char)
+#   define WORD_SIZE        sizeof(short)
+#   define DWORD_SIZE       sizeof(int)
+#   define QWORD_SIZE       sizeof(long)
+#endif
+
+#ifndef DATA_ALIGN_BLOCK
+#define DATA_ALIGN_BLOCK
+#   define BYTE_ALIGN       alignof(char)
+#   define WORD_ALIGN       alignof(short)
+#   define DWORD_ALIGN      alignof(int)
+#   define QWORD_ALIGN      alignof(long)
+#endif
+
+#ifndef DATA_BITS_BLOCK
+#define DATA_BITS_BLOCK
+#   define BYTE_BIT         8
+#   define CHAR_BIT         (BYTE_SIZE  * BYTE_BIT)
+#   define WORD_BIT         (WORD_SIZE  * BYTE_BIT)
+#   define DWORD_BIT        (DWORD_SIZE * BYTE_BIT)
+#   define QWORD_BIT        (QWORD_SIZE * BYTE_BIT)
+#   define SHORT_BIT        WORD_BIT
+#   define INT_BIT          DWORD_BIT
+#   define LONG_BIT         QWORD_BIT
+#endif
+
+#ifndef DATA_SHIFTS_BLOCK
+#define DATA_SHIFTS_BLOCK
+#   define BYTES_TO_WORDS(B)    ((B) >> 1)
+#   define BYTES_TO_DWORDS(B)   ((B) >> 2)
+#   define BYTES_TO_QWORDS(B)   ((B) >> 3)
+#   define WORDS_TO_BYTES(W)    ((W) << 1)
+#   define WORDS_TO_DWORDS(W)   ((W) >> 1)
+#   define WORDS_TO_QWORDS(W)   ((W) >> 2)
+#   define DWORDS_TO_BYTES(D)   ((D) << 2)
+#   define DWORDS_TO_WORDS(D)   ((D) << 1)
+#   define DWORDS_TO_QWORDS(D)  ((D) >> 1)
+#   define QWORDS_TO_BYTES(Q)   ((Q) << 3)
+#   define QWORDS_TO_WORDS(Q)   ((Q) << 2)
+#   define QWORDS_TO_DWORDS(Q)  ((Q) << 1)
+#endif
+
+//------------------------------------------//
+//           Numeric data limits            //
+//------------------------------------------//
+
+#ifndef DATA_MAX_LIMITS_BLOCK
+#define DATA_MAX_LIMITS_BLOCK
+#   define SCHAR_MAX    ((signed char)      0x7F)
+#   define SHRT_MAX     ((short)            0x7FFF)
+#   define INT_MAX      ((int)              0x7FFFFFFF)
+#   define LONG_MAX     ((long)             0x7FFFFFFFFFFFFFFF)
+#   define UCHAR_MAX    ((unsigned char)    0xFF
+#   define USHRT_MAX    ((unsigned short)   0xFFFF)
+#   define UINT_MAX     ((unsigned int)     0xFFFFFFFF)
+#   define ULONG_MAX    ((unsigned long)    0xFFFFFFFFFFFFFFFF)
+#endif
+
+#ifndef DATA_MIN_LIMITS_BLOCK
+#define DATA_MIN_LIMITS_BLOCK
+#   define SCHAR_MIN    ((signed char)  -SCHAR_MAX - 1)
+#   define SHRT_MIN     ((short)        -SHRT_MAX  - 1)
+#   define INT_MIN      ((int)          -INT_MAX   - 1)
+#   define LONG_MIN     ((long)         -LONG_MAX  - 1L)
+#endif
+
+#ifndef DATA_CHAR_LIMITS_BLOCK
+#define DATA_CHAR_LIMITS_BLOCK
+#  ifdef __CHAR_UNSIGNED__
+#   define CHAR_MIN	((char)0)
+#   define CHAR_MAX	((char)UCHAR_MAX)
+#  else
+#   define CHAR_MIN	((char)SCHAR_MIN)
+#   define CHAR_MAX	((char)SCHAR_MAX)
+#  endif
+#endif
+
+#ifndef DATA_SPTYPES_LIMITS_BLOCK
+#define DATA_SPTYPES_LIMITS_BLOCK
+#   define SSIZE_T_MIN      LONG_MIN
+#   define SSIZE_T_MAX      LONG_MAX
+#   define SIZE_T_MAX       ULONG_MAX
+#endif
+
+#ifdef NEED_MORE_USELESS_DATA
+#   define UCHAR_MIN    ((unsigned char)0)
+#   define USHRT_MIN    ((unsigned short)0)
+#   define UINT_MIN     ((unsigned int)0)
+#   define ULONG_MIN    ((unsigned long)0)
+#   ifdef STILL_NEED_MORE_USELESS_DATA
+#       error "Not enough useless data!"
+#   endif
+#endif
+
+//------------------------------------------//
+//              End of header               //
+//------------------------------------------//
+
+#endif

kaleid/include/common/kallist.h

@@ -0,0 +1,271 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Authors:    spectral`                                                     //
+//              NeoX                                                          //
+//                                                                            //
+//  Desc:       Doubly linked lists implementation                            //
+//----------------------------------------------------------------------------//
+
+#ifndef _KALLIST_H
+#define _KALLIST_H
+
+#ifdef _KALEID_KERNEL
+#error "kallist.h - Not ready for kernel compilation"
+#endif
+
+#ifndef _KALASSRT_H
+#include <common/kalassrt.h>
+#endif
+
+#ifndef _KALKERN_LOCKS_H
+#include <kernel/kernlocks.h>
+#endif
+
+//
+// XXX ¯\_(ツ)_/¯
+//
+void *malloc(long);
+void free(void *);
+
+#define AllocMemory malloc
+#define FreeMemory free
+
+//------------------------------------------//
+//              Data structures             //
+//------------------------------------------//
+
+typedef struct sListHead_t {
+    Lock_t                 *lock;
+    unsigned long           length;
+    struct sListNode_t     *first;
+    struct sListNode_t     *last;
+} ListHead_t;
+
+typedef struct sListNode_t {
+    void                   *data;
+    ListHead_t             *head;
+    struct sListNode_t     *prev;
+    struct sListNode_t     *next;
+} ListNode_t;
+
+//------------------------------------------//
+//                Functions                 //
+//------------------------------------------//
+
+//
+// Create a list head with an extern lock
+//
+static inline ListHead_t
+*CreateListHeadWithLock(Lock_t *lock)
+{
+    ListHead_t *head = AllocMemory(sizeof(ListHead_t));
+
+    if (head == NULL) return NULL;
+
+    head->first = head->last = NULL;
+    head->length = 0;
+
+    head->lock = lock;
+
+    return head;
+}
+
+//
+// Create a liste head
+//
+static inline ListHead_t
+*CreateListHead(void)
+{
+    return CreateListHeadWithLock(NULL);
+}
+
+//
+// Create a node
+//
+static inline ListNode_t
+*CreateNode(void *data)
+{
+    ListNode_t *node = AllocMemory(sizeof(ListNode_t));
+
+    if (node == NULL) return NULL;
+
+    node->data = data;
+    node->head = NULL;
+    node->prev = node->next = NULL;
+
+    return node;
+}
+
+//
+// Prepend node at beginning of list
+//
+static inline ListHead_t
+*PrependNode(ListHead_t *head, ListNode_t *node)
+{
+    KalAssert(head && node);
+
+    node->head = head;
+    node->prev = NULL;
+
+    if (head->length > 0) {
+        node->next = head->first;
+        head->first->prev = node;
+        head->first = node;
+    }
+
+    else {
+        head->first = node;
+        head->last  = node;
+        node->next  = NULL;
+    }
+
+    head->length++;
+
+    return head;
+}
+
+//
+// Append node at end of list
+//
+static inline ListHead_t
+*AppendNode(ListHead_t *head, ListNode_t *node)
+{
+    KalAssert(head && node);
+
+    node->head = head;
+    node->next = NULL;
+
+    if (head->length > 0) {
+        node->prev = head->last;
+        head->last->next = node;
+        head->last = node;
+    }
+
+    else {
+        head->first = node;
+        head->last  = node;
+        node->prev  = NULL;
+    }
+
+    head->length++;
+
+    return head;
+}
+
+//
+// Insert node2 before node1
+//
+static inline ListHead_t
+*AddNodeBefore(ListHead_t *head, ListNode_t *node1, ListNode_t *node2)
+{
+    KalAssert(head && node1 && node2 && node1->head == head);
+
+    if (head->first == node1) {
+        return PrependNode(head, node2);
+    }
+
+    node2->head = head;
+    node2->next = node1;
+    node2->prev = node1->prev;
+
+    // node1->prev does exist
+    // or node1 would be first
+    node1->prev->next = node2;
+    node1->prev = node2;
+
+    head->length++;
+
+    return head;
+}
+
+//
+// Insert node2 after node1
+//
+static inline ListHead_t
+*AddNodeAfter(ListHead_t *head, ListNode_t *node1, ListNode_t *node2)
+{
+    KalAssert(head && node1 && node2 && node1->head == head);
+
+    if (head->last == node1) {
+        return AppendNode(head, node2);
+    }
+
+    node2->head = head;
+    node2->prev = node1;
+    node2->next = node1->next;
+
+    node1->next->prev = node2;
+    node1->next = node2;
+
+    head->length++;
+
+    return head;
+}
+
+//
+// Remove node of list
+//
+static inline ListHead_t
+*RemoveNode(ListHead_t *head, ListNode_t *node)
+{
+    KalAssert(head && node && head->length > 0 && node->head == head);
+
+    if (head->length == 1) {
+        head->first = head->last = NULL;
+        goto leave;
+    }
+
+    if (head->first == node) {
+        head->first = node->next;
+        node->next->prev = NULL;
+    }
+
+    else if (head->last == node) {
+        head->last = node->prev;
+        node->prev->next = NULL;
+    }
+
+    else {
+        node->prev->next = node->next;
+        node->next->prev = node->prev;
+    }
+
+leave:
+    head->length--;
+    FreeMemory(node);
+
+    return head;
+}
+
+//
+// Free a node
+//
+static inline void
+DestroyNode(ListNode_t *node)
+{
+    KalAssert(node);
+    FreeMemory(node);
+}
+
+//
+// Free a list head
+//
+static inline void
+DestroyListHead(ListHead_t *head)
+{
+    KalAssert(head);
+    FreeMemory(head);
+}
+
+//
+//  Access a node's data
+//
+#define GetNodeData(node, type) ((type)(node)->data)
+
+//------------------------------------------//
+//              End of header               //
+//------------------------------------------//
+
+#endif
+

kaleid/include/common/kalmask.h

@@ -0,0 +1,114 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Authors:    spectral`                                                     //
+//              NeoX                                                          //
+//                                                                            //
+//  Desc:       Masks for the functions in the KCRL                           //
+//----------------------------------------------------------------------------//
+
+#ifndef _KALMASK_H
+#define _KALMASK_H
+
+//------------------------------------------//
+
+#define memset      _osk_memsetb
+#define memchr      _osk_memchrb
+
+#define memsetb     _osk_memsetb
+#define memsetw     _osk_memsetw
+#define memsetd     _osk_memsetd
+#define memsetq     _osk_memsetq
+
+#define memchr      _osk_memchrb
+#define memchrw     _osk_memchrw
+#define memchrd     _osk_memchrd
+#define memchrq     _osk_memchrq
+
+#define memcpy      _osk_memcpy
+#define memmove     _osk_memmove
+
+#define memcmp      _osk_memcmp
+#define memzero     _osk_memzero
+
+//------------------------------------------//
+
+#define strlen      _osk_strlen
+#define strspn      _osk_strspn
+#define strcspn     _osk_strcspn
+
+#define strcmp      _osk_strcmp
+#define strncmp     _osk_strncmp
+
+#define strchr      _osk_strchr
+#define strrchr     _osk_strrchr
+
+#define strstr      _osk_strstr
+#define strpbrk     _osk_strpbrk
+
+#define strtok      _osk_strtok
+#define strtok_r    _osk_strtok_r
+
+#define strcpy      _osk_strcpy
+#define strncpy     _osk_strncpy
+#define xstrncpy    _osk_xstrncpy
+
+#define strcat      _osk_strcat
+#define strncat     _osk_strncat
+#define xstrncat    _osk_xstrncat
+
+#define strrev      _osk_strrev
+#define strrev2     _osk_strrev2
+
+#define sprintf     _osk_sprintf
+#define snprintf    _osk_snprintf
+#define vsprintf    _osk_vsprintf
+#define vsnprintf   _osk_vsnprintf
+
+//------------------------------------------//
+
+
+#define itoa        _osk_itoa
+#define ltoa        _osk_ltoa
+#define utoa        _osk_utoa
+#define ultoa       _osk_ultoa
+
+#define atoi        _osk_atoi
+#define atol        _osk_atol
+#define atou        _osk_atou
+#define atoul       _osk_atoul
+
+#define strtol      _osk_strtol
+#define strtoul     _osk_strtoul
+
+//------------------------------------------//
+
+#define rand        _osk_rand
+#define srand       _osk_srand
+
+//------------------------------------------//
+
+#define abs         _osk_abs
+#define labs        _osk_labs
+
+#define min         _osk_min
+#define lmin        _osk_lmin
+
+#define max         _osk_max
+#define lmax        _osk_lmax
+
+#define __div
+#define __ldiv
+
+#define div         _osk_div
+#define ldiv        _osk_ldiv
+
+//------------------------------------------//
+
+#define strerror _osk_strerror
+
+//------------------------------------------//
+//              End of header               //
+//------------------------------------------//
+
+#endif

kaleid/include/common/kaltypes.h

@@ -0,0 +1,120 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Authors:    spectral`                                                     //
+//              NeoX                                                          //
+//                                                                            //
+//  Desc:       Kaleid C common types                                         //
+//----------------------------------------------------------------------------//
+
+#ifndef _KALTYPES_H
+#define _KALTYPES_H
+
+//------------------------------------------//
+//       Basic integer types aliases        //
+//------------------------------------------//
+
+#ifndef __base_types_aliases
+#define __base_types_aliases
+typedef unsigned char       uchar;
+typedef signed char         schar;
+typedef unsigned short      ushort;
+typedef unsigned int        uint;
+typedef unsigned long       ulong;
+typedef signed long long    llong;
+typedef unsigned long long  ullong;
+typedef long double         ldouble;
+#endif
+
+//------------------------------------------//
+//           Miscellaneous types            //
+//------------------------------------------//
+
+#ifndef __size_t_defined
+#define __size_t_defined
+typedef unsigned long       size_t;
+#endif
+
+#ifndef __ssize_t_defined
+#define __ssize_t_defined
+typedef signed long         ssize_t;
+#endif
+
+#ifndef __wchar_t_defined
+#define __wchar_t_defined
+typedef signed int          wchar_t;
+#endif
+
+#ifndef __off_t_defined
+#define __off_t_defined
+typedef unsigned long       off_t;
+#endif
+
+//------------------------------------------//
+//    Standard fixed-width integer types    //
+//------------------------------------------//
+
+#ifndef __ptrdiff_t_defined
+#define __ptrdiff_t_defined
+typedef signed long         ptrdiff_t;
+#endif
+
+#ifndef __intptr_t_defined
+#define __intptr_t_defined
+typedef signed long         intptr_t;
+#endif
+
+#ifndef __uintptr_t_defined
+#define __uintptr_t_defined
+typedef unsigned long       uintptr_t;
+#endif
+
+#ifndef __intmax_t_defined
+#define __intmax_t_defined
+typedef signed long         intmax_t;
+#endif
+
+#ifndef __uintmax_t_defined
+#define __uintmax_t_defined
+typedef unsigned long       uintmax_t;
+#endif
+
+//------------------------------------------//
+//              Special types               //
+//------------------------------------------//
+
+#ifndef __va_list_defined
+#define __va_list_defined
+typedef __builtin_va_list           va_list;
+#endif
+
+#ifndef __div_t_defined
+#define __div_t_defined
+typedef struct { int quot, rem; }   div_t;
+#endif
+
+#ifndef __ldiv_t_defined
+#define __ldiv_t_defined
+typedef struct { long quot, rem; }  ldiv_t;
+#endif
+
+
+//------------------------------------------//
+//          Kaleid-specific types           //
+//------------------------------------------//
+
+#ifndef __error_t_defined
+#define __error_t_defined
+typedef int                 error_t;
+#endif
+
+#ifndef __port_t_defined
+#define __port_t_defined
+typedef ushort              port_t;
+#endif
+
+//------------------------------------------//
+//              End of header               //
+//------------------------------------------//
+
+#endif

kaleid/include/kaleid.h

@@ -0,0 +1,95 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Authors:    spectral`                                                     //
+//              NeoX                                                          //
+//                                                                            //
+//  Desc:       Kaleid API main include file                                  //
+//----------------------------------------------------------------------------//
+
+#ifndef _KALEID_H
+#define _KALEID_H
+
+//------------------------------------------//
+//           Building for OS/K              //
+//------------------------------------------//
+
+#if !defined(_OSK_SOURCE)
+#   if defined(_KALEID_KERNEL) || defined(_KALEID_SYSTEM)
+#       define _OSK_SOURCE 1
+#   endif
+#endif
+
+#if !defined(_OSK_SOURCE)
+#   ifndef _KALMASK_H
+#       include <common/kalmask.h>
+#   endif
+#endif
+
+//------------------------------------------//
+//             Building in C++              //
+//------------------------------------------//
+
+#ifdef __cplusplus__
+extern "C" {
+#endif
+
+//------------------------------------------//
+//        Include common part of API        //
+//------------------------------------------//
+
+#ifndef _KALDEFS_H
+#include <common/kaldefs.h>
+#endif
+
+#ifndef _KALERROR_H
+#include <common/kalerror.h>
+#endif
+
+#ifndef _KALTYPES_H
+#include <common/kaltypes.h>
+#endif
+
+#ifndef _KALLIMS_H
+#include <common/kallims.h>
+#endif
+
+#ifndef _KALASSRT_H
+#include <common/kalassrt.h>
+#endif
+
+#ifndef _KALCRT_H
+#include <common/kalcrt.h>
+#endif
+
+//------------------------------------------//
+//          Include kernel headers          //
+//------------------------------------------//
+
+#ifdef _KALEID_KERNEL
+
+#ifndef _KALKERN_H
+#include <kalkern.h>
+#endif
+
+#else
+
+#ifndef _KALKERN_LOCKS_H
+#include <kernel/kernlocks.h>
+#endif
+
+#endif
+
+//------------------------------------------//
+//             Building in C++              //
+//------------------------------------------//
+
+#ifdef __cplusplus__
+}
+#endif
+
+//------------------------------------------//
+//              End of header               //
+//------------------------------------------//
+
+#endif

kaleid/include/kalkern.h

@@ -0,0 +1,45 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Authors:    spectral`                                                     //
+//              NeoX                                                          //
+//                                                                            //
+//  Desc:       Kaleid Kernel main include file                               //
+//----------------------------------------------------------------------------//
+
+//------------------------------------------//
+//              Dependencies                //
+//------------------------------------------//
+
+#ifndef _KALEID_H
+#include <kaleid.h>
+#endif
+
+//------------------------------------------//
+//             Start of header              //
+//------------------------------------------//
+
+#ifndef _KALKERN_H
+#define _KALKERN_H
+
+//------------------------------------------//
+//              Kernel headers              //
+//------------------------------------------//
+
+#ifndef _KALKERN_BASE_H
+#include <kernel/kernbase.h>
+#endif
+
+#ifndef _KALKERN_LOCKS_H
+#include <kernel/kernlocks.h>
+#endif
+
+#ifndef _KALKERN_TERM_H
+#include <kernel/kernterm.h>
+#endif
+
+//------------------------------------------//
+//              End of header               //
+//------------------------------------------//
+
+#endif

kaleid/include/kernel/kernbase.h

@@ -0,0 +1,205 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Authors:    spectral`                                                     //
+//              NeoX                                                          //
+//                                                                            //
+//  Desc:       Kaleid Kernel base types and functionalities                  //
+//----------------------------------------------------------------------------//
+
+//------------------------------------------//
+//              Dependencies                //
+//------------------------------------------//
+
+#ifndef _KALEID_H
+#include <kaleid.h>
+#endif
+
+//------------------------------------------//
+//             Start of header              //
+//------------------------------------------//
+
+#ifndef _KALKERN_BASE_H
+#define _KALKERN_BASE_H
+
+//------------------------------------------//
+//           Elementary types               //
+//------------------------------------------//
+
+typedef struct sLock_t volatile     Lock_t;
+typedef struct sThread_t            Thread_t;
+typedef struct sProcess_t           Process_t;
+typedef struct sTerminal_t          Terminal_t;
+typedef struct sListHead_t          ListHead_t;
+typedef struct sListNode_t          ListNode_t;
+
+//------------------------------------------//
+//           Values for __kstate            //
+//------------------------------------------//
+
+//
+// Current state of the kernel
+//
+typedef enum {
+    // the kernel is booting
+    KSTATE_INIT,
+
+    // the kernel is not running a process
+    KSTATE_KERNEL,
+
+    // a process is running in kernel mode
+    KSTATE_PROCESS,
+
+    // the kernel is panicking
+    KSTATE_PANIC,
+
+} KernelState_t;
+
+//------------------------------------------//
+//            Multiprocessor misc.          //
+//------------------------------------------//
+
+#ifndef NCPU
+#define NCPU 4
+#endif
+
+#define GetCurCPU() 0
+
+//
+// Declare an (extern) CPU-local variable
+//
+#define __DECLARE_PER_CPU(_X, _Tp, _Qual)   \
+    _Qual _Tp __ ## _X [NCPU];              \
+    static inline _Tp Get ## _X (void)      \
+        { return __ ## _X [GetCurCPU()]; }  \
+    static inline void _Set ## _X (_Tp _Y)  \
+        { (__ ## _X [GetCurCPU()] = _Y); }
+
+#define DECLARE_PER_CPU(_X, _Tp)            \
+      __DECLARE_PER_CPU(_X, _Tp, extern)
+
+#define LOCAL_DEC_PER_CPU(_X, _Tp)          \
+      __DECLARE_PER_CPU(_X, _Tp, static)
+
+//
+// Actually creates a CPU-local variable
+//
+#define CREATE_PER_CPU(_X, _Tp)             \
+    _Tp __ ## _X [NCPU] = { (_Tp) 0 }
+
+
+//------------------------------------------//
+//             Global constants             //
+//------------------------------------------//
+
+// XXX
+DECLARE_PER_CPU(PanicStr,    const char *);
+
+DECLARE_PER_CPU(KernState,   KernelState_t);
+
+DECLARE_PER_CPU(_StdOut,     Terminal_t *);
+DECLARE_PER_CPU(_StdDbg,     Terminal_t *);
+
+DECLARE_PER_CPU(CurProc,     Process_t *);
+DECLARE_PER_CPU(CurThread,   Thread_t *);
+
+//------------------------------------------//
+//       Macros for manipulating said       //
+//             global constants             //
+//------------------------------------------//
+
+#define SetPanicStr(str)                    \
+    do {                                    \
+        SetKernState(KSTATE_PANIC);         \
+        _SetPanicStr(str);                  \
+    } while (0)
+
+#define SetKernState(x)                     \
+    do {                                    \
+        _SetKernState(x);                   \
+    } while (0)
+
+#define GetStdOut()         (GetCurProc() == NULL ? Get_StdOut() : NULL)
+#define SetStdOut(tm)                       \
+    do {                                    \
+        if (GetCurProc() == NULL)           \
+            _Set_StdOut(tm);                \
+    } while (0);
+
+#define GetStdDbg()         (GetCurProc() == NULL ? Get_StdDbg() : NULL)
+#define SetStdDbg(tm)                       \
+    do {                                    \
+        if (GetCurProc() == NULL)           \
+            _Set_StdDbg(tm);                \
+    } while (0)
+
+//------------------------------------------//
+//               Other Macros               //
+//------------------------------------------//
+
+//
+// Size of a tabulation in spaces
+// Default: 4 spaces/tab
+//
+#define KTABSIZE 4
+
+//
+// Disable IRQs
+//
+#define DisableIRQs() asm volatile ("cli")
+
+//
+// Enable IRQs
+//
+#define EnableIRQs() asm volatile ("sti")
+
+//
+// Pause CPU until next interuption
+// !!! Enables IRQs !!!
+//
+#define PauseCPU() asm volatile("sti\n\thlt")
+
+//
+// Halt the CPU indefinitely
+//
+#define HaltCPU() do { asm volatile ("hlt"); } while (1)
+
+//------------------------------------------//
+//           Some base functions            //
+//------------------------------------------//
+
+noreturn void StartPanic(const char *);
+noreturn void CrashSystem(void);
+
+//------------------------------------------//
+//            Useful I/O inlines            //
+//------------------------------------------//
+
+static inline
+void WriteByteOnPort(port_t port, port_t val)
+{
+    asm volatile ("out %0, %1" : : "dN" (port), "a" (val));
+}
+
+static inline
+uchar ReadByteFromPort(port_t port)
+{
+    errno = ENOSYS;
+    (void)port;
+    return 0;
+}
+
+static inline
+ushort ReadWordFromPort(port_t port)
+{
+    errno = ENOSYS;
+    (void)port;
+    return 0;
+}
+
+//------------------------------------------//
+//              End of header               //
+//------------------------------------------//
+
+#endif
+

kaleid/include/kernel/kernlocks.h

@@ -0,0 +1,170 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Authors:    spectral`                                                     //
+//              NeoX                                                          //
+//                                                                            //
+//  Desc:       Spinlocks and mutexes                                         //
+//----------------------------------------------------------------------------//
+
+//------------------------------------------//
+//              Dependencies                //
+//------------------------------------------//
+
+#ifdef _KALEID_KERNEL
+
+#ifndef _KALKERN_BASE_H
+#include "kernbase.h"
+#endif
+
+#else
+
+#ifndef _KALEID_H
+#include <kaleid.h>
+#endif
+
+#endif
+
+//------------------------------------------//
+//             Start of header              //
+//------------------------------------------//
+
+#ifndef _KALKERN_LOCKS_H
+#define _KALKERN_LOCKS_H
+
+//------------------------------------------//
+//                  Types                   //
+//------------------------------------------//
+
+typedef enum eLockType_t {
+    //
+    // Mutex-type lock
+    //
+    // WARNING
+    //      AquireLock() panics when used on a mutex while not running a process
+    //
+    KLOCK_MUTEX,
+
+    //
+    // Spinlock-type lock
+    //
+    KLOCK_SPINLOCK,
+
+} LockType_t;
+
+//
+// "volatile" may not be actually needed
+//
+typedef struct sLock_t {
+    unsigned int    initDone;       // initialized?
+    int             locked;         // is locked?
+    LockType_t      type;           // lock type?
+#ifdef _KALEID_KERNEL
+    Process_t      *ownerProc;      // unused
+    Process_t      *waitingProc;    // unused
+#endif
+} volatile Lock_t;
+
+//------------------------------------------//
+//                Functions                 //
+//------------------------------------------//
+
+//
+// Linux syscall...
+//
+#ifndef _KALEID_KERNEL
+int sched_yield(void);
+#endif
+
+//
+// Initialize a lock
+//
+static inline
+void InitLock(Lock_t *lock, LockType_t type)
+{
+    lock->type = type;
+    lock->locked = FALSE;
+    lock->initDone = INITOK;
+#ifdef _KALEID_KERNEL
+    lock->ownerProc = NULL;
+    lock->waitingProc = NULL;
+#endif
+}
+
+//
+// Alternative way to initalize a lock
+//
+#ifdef _KALEID_KERNEL
+#   define INITLOCK(type)    { INITOK, FALSE, (type), NULL, NULL }
+#else
+#   define INITLOCK(type)    { INITOK, FALSE, (type) }
+#endif
+
+//
+// Destroy a lock
+//
+static inline
+void DestroyLock(Lock_t *lock)
+{
+    KalAssert(lock->initDone);
+
+    __sync_synchronize();
+    lock->initDone = 0;
+}
+
+//
+// Aquire the lock
+// Panic on double aquisition since that should never happen
+// until we have at least a basic scheduler
+//
+static inline
+void AquireLock(Lock_t *lock)
+{
+    KalAssert(lock->initDone == INITOK);
+
+    while (!__sync_bool_compare_and_swap(&lock->locked, 0, 1)) {
+#ifdef _KALEID_KERNEL
+        StartPanic("AquireLock on an already locked object");
+#else
+        if likely (lock->type == KLOCK_SPINLOCK) continue;
+        else sched_yield();
+#endif
+    }
+    __sync_synchronize();
+}
+
+//
+// Release an already aquired lock
+// Panic if the lock was never aquired
+//
+static inline
+void ReleaseLock(Lock_t *lock)
+{
+#ifdef _KALEID_KERNEL
+    KalAssert(lock->ownerProc == GetCurProc());
+#endif
+
+    __sync_synchronize();
+    lock->locked = 0;
+}
+
+//
+// Tries to aquire lock
+//
+static inline
+bool AttemptLock(Lock_t *lock)
+{
+    KalAssert(lock->initDone == INITOK);
+
+    bool retval = __sync_bool_compare_and_swap(&lock->locked, 0, 1);
+
+    __sync_synchronize();
+
+    return retval;
+}
+
+//------------------------------------------//
+//              End of header               //
+//------------------------------------------//
+
+#endif

kaleid/include/kernel/kernsched.h

@@ -0,0 +1,102 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Authors:    spectral`                                                     //
+//              NeoX                                                          //
+//                                                                            //
+//  Desc:       Scheduler header                                              //
+//----------------------------------------------------------------------------//
+
+//------------------------------------------//
+//              Dependencies                //
+//------------------------------------------//
+
+#ifndef _KALKERN_BASE_H
+#include "kernbase.h"
+#endif
+
+#ifndef _KALLIST_H
+#include <common/kallist.h>
+#endif
+
+//------------------------------------------//
+//             Start of header              //
+//------------------------------------------//
+
+#ifndef _KALKERN_SCHED_H
+#define _KALKERN_SCHED_H
+
+//------------------------------------------//
+//               Preprocessor               //
+//------------------------------------------//
+
+#define printdbg printf
+#define _STR(x) #x
+#define _XSTR(x) _STR(x)
+
+//
+// States for a process
+//
+#define STATE_RUNNING  0
+#define STATE_RUNNABLE 1
+#define STATE_BLOCKED  2
+
+//
+// Time in ticks a process should be run
+//
+#define DEF_PROC_TSLICE     5       // 20 ticks
+#define TCR_PROC_TSLICE     20000   // 20000 ticks (time critical)
+
+//------------------------------------------//
+//               List heads                 //
+//------------------------------------------//
+
+DECLARE_PER_CPU(IdlePrioProcs, ListHead_t *);
+DECLARE_PER_CPU(ReglPrioProcs, ListHead_t *);
+DECLARE_PER_CPU(ServPrioProcs, ListHead_t *);
+DECLARE_PER_CPU(TimeCritProcs, ListHead_t *);
+
+//------------------------------------------//
+//               Data types                 //
+//------------------------------------------//
+
+//
+// A process
+//
+typedef struct sProcess_t{
+
+    // Identifier
+    int         pid;
+
+    // Current priority class
+    int         prioClass;
+
+    // Default priority class (without boosts)
+    int         defPrioClass;
+
+    // Current priority level
+    int         prioLevel;
+
+    // Default priority level
+    int         defPrioLevel;
+
+    // Current state
+    int         procState;
+
+    // Remaining time running
+    ulong       timeSlice;
+
+    // Default time-slice
+    ulong       defTimeSlice;
+
+    // Scheduler internals
+    ListNode_t *schedNode;
+
+} Process_t;
+
+//------------------------------------------//
+//              End of header               //
+//------------------------------------------//
+
+#endif
+

kaleid/include/kernel/kernterm.h

@@ -0,0 +1,95 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Authors:    spectral`                                                     //
+//              NeoX                                                          //
+//                                                                            //
+//  Desc:       Terminal functions                                            //
+//----------------------------------------------------------------------------//
+
+//------------------------------------------//
+//              Dependencies                //
+//------------------------------------------//
+
+#ifndef _KALKERN_BASE_H
+#include "kernbase.h"
+#endif
+
+//------------------------------------------//
+//             Start of header              //
+//------------------------------------------//
+
+#ifndef _KALKERN_TERM_H
+#define _KALKERN_TERM_H
+
+//------------------------------------------//
+//                  Types                   //
+//------------------------------------------//
+
+//
+// The VGA colors
+//
+typedef enum {
+    KTERM_COLOR_BLACK,      KTERM_COLOR_BLUE,
+    KTERM_COLOR_GREEN,      KTERM_COLOR_CYAN,
+    KTERM_COLOR_RED,        KTERM_COLOR_MAGENTA,
+    KTERM_COLOR_BROWN,      KTERM_COLOR_LGREY,
+    KTERM_COLOR_DARK_GREY,  KTERM_COLOR_LBLUE,
+    KTERM_COLOR_LGREEN,     KTERM_COLOR_LCYAN,
+    KTERM_COLOR_LRED,       KTERM_COLOR_LMAGENTA,
+    KTERM_COLOR_LBROWN,     KTERM_COLOR_WHITE
+} TermColor_t;
+
+//
+//  Terminal structure, right now VGA and output only
+//
+typedef struct sTerminal_t {
+
+    uint                initDone;
+    Lock_t              lock;
+
+    const char         *name;
+    const char         *type;
+
+    void               *data;
+
+    size_t              width;
+    size_t              height;
+    off_t               currentX;
+    off_t               currentY;
+
+    uint                tabSize;
+    TermColor_t         fgColor;
+    TermColor_t         bgColor;
+
+    error_t            (*ClearTermUnlocked)(Terminal_t *);
+    error_t            (*PutOnTermUnlocked)(Terminal_t *, char);
+    error_t            (*PrintOnTermUnlocked)(Terminal_t *, const char *);
+
+} Terminal_t;
+
+//------------------------------------------//
+//                Functions                 //
+//------------------------------------------//
+
+void        InitTerms(void);
+error_t     ClearTerm(Terminal_t *);
+error_t     PutOnTerm(Terminal_t *, char);
+error_t     PrintOnTerm(Terminal_t *, const char *);
+error_t     ChTermColor(Terminal_t *, TermColor_t, TermColor_t);
+
+//------------------------------------------//
+//                  Macros                  //
+//------------------------------------------//
+
+#ifndef _NO_DEBUG
+#   define DebugLog(...)    PrintOnTerm(GetStdDbg(), __VA_ARGS__)
+#else
+#   define DebugLog(...)
+#endif
+
+//------------------------------------------//
+//              End of header               //
+//------------------------------------------//
+
+#endif

kaleid/kernel/init/init.c

@@ -7,16 +7,23 @@
 //  Desc:       Kernel entry point                                            //
 //----------------------------------------------------------------------------//
 
-#include "kernel/init.h"
+#include <kaleid.h>
-#include "kernel/ke/panic.h"
-#include "kernel/io/terminal.h"
 
 //
-//  Entry point of kaleid-kernel.elf
+// Entry point of kaleid-kernel.elf
 //
-void kstart(void)
+noreturn void StartKern(void)
 {
-    kterm_init();
+    // we're not ready to deal with interrupts
-    panic("Goodbye World :(");
+    DisableIRQs();
+
+    // booting!
+    SetKernState(KSTATE_INIT);
+
+    // kernel terminals
+    InitTerms();
+
+    // we're out
+    StartPanic("Goodbye World :(");
 }
 

kaleid/kernel/init/table.c

@@ -4,21 +4,18 @@
 //  Authors:    spectral`                                                     //
 //              NeoX                                                          //
 //                                                                            //
-//  Desc:       Conversion utilities                                          //
+//  Desc:       Global constants                                              //
 //----------------------------------------------------------------------------//
 
-#ifndef _KALCOMM_CONVERT_H
+#include <kaleid.h>
-#define _KALCOMM_CONVERT_H
 
-#ifndef _KALCOMM_COMMON_H
+CREATE_PER_CPU(PanicStr,    const char *);
-#include "common/common.h"
-#endif
 
-#ifndef _OSK_SOURCE
+CREATE_PER_CPU(KernState,   KernelState_t);
-#   define itoa _osk_itoa
-#   define atoi _osk_atoi
-#endif
 
-char *itoa(int, char *, int);
+CREATE_PER_CPU(_StdOut,     Terminal_t *);
+CREATE_PER_CPU(_StdDbg,     Terminal_t *);
+
+CREATE_PER_CPU(CurProc,     Process_t *);
+CREATE_PER_CPU(CurThread,   Thread_t *);
 
-#endif

kaleid/kernel/ke/panic.c

@@ -0,0 +1,69 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Authors:    spectral`                                                     //
+//              NeoX                                                          //
+//                                                                            //
+//  Desc:       How NOT to panic 101                                          //
+//----------------------------------------------------------------------------//
+
+#define _UNLOCKED_IO
+#include <kaleid.h>
+
+//
+// Failed assert() handler
+//
+noreturn void _assert_handler(const char *msg,
+                              const char *file,
+                              int line,
+                              const char *func)
+{
+    DisableIRQs();
+
+    (void)file; (void)line; (void)func;
+
+    // XXX sprintf() to create a proper panicstr
+    StartPanic(msg);
+}
+
+//
+// Your best boy panic()
+// This is CPU local...
+//
+noreturn void StartPanic(const char *str)
+{
+    DisableIRQs();
+
+    SetKernState(KSTATE_PANIC);
+
+    if (GetCurProc()) __CurProc[GetCurCPU()] = NULL;
+    if (GetStdOut() == NULL) CrashSystem();
+
+    GetStdOut()->ClearTermUnlocked(GetStdOut());
+
+    if (str == NULL) {
+        str = "(no message given)";
+    }
+
+    if (GetPanicStr()) {
+        GetStdOut()->PrintOnTermUnlocked(GetStdOut(), "double panic!\n");
+        HaltCPU();
+    }
+
+    SetPanicStr(str);
+
+    GetStdOut()->PrintOnTermUnlocked(GetStdOut(), "PANIC! - ");
+    GetStdOut()->PrintOnTermUnlocked(GetStdOut(), str);
+
+    HaltCPU();
+}
+
+//
+// Oh well
+//
+noreturn void CrashSystem(void)
+{
+    DisableIRQs();
+    HaltCPU();
+}
+

kaleid/kernel/ke/terminal.c

@@ -0,0 +1,236 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Authors:    spectral`                                                     //
+//              NeoX                                                          //
+//                                                                            //
+//  Desc:       Early terminal functions                                      //
+//----------------------------------------------------------------------------//
+
+#include <kaleid.h>
+
+static Terminal_t vgaTerm;
+
+//
+// Initialize standard output
+//
+void InitTerms(void)
+{
+    KalAssert(!GetStdOut() && vgaTerm.initDone != INITOK);
+
+    vgaTerm.initDone = INITOK;
+
+    SetStdDbg(&vgaTerm);
+    SetStdOut(&vgaTerm);
+
+    ClearTerm(GetStdOut());
+}
+
+//
+// Fill terminal with spaces
+//
+error_t ClearTerm(Terminal_t *term)
+{
+    error_t retcode;
+
+    if (term == NULL) return EINVAL;
+    KalAssert(term->initDone == INITOK);
+
+    AquireLock(&term->lock);
+    retcode = term->ClearTermUnlocked(term);
+    ReleaseLock(&term->lock);
+
+    return retcode;
+}
+
+//
+// Change the color code
+//
+error_t ChTermColor(Terminal_t *term, TermColor_t fgColor, TermColor_t bgColor)
+{
+    if (fgColor > KTERM_COLOR_WHITE || bgColor > KTERM_COLOR_WHITE)
+        return EINVAL;
+
+    if (term == NULL)
+        return EINVAL;
+
+    AquireLock(&term->lock);
+
+    term->fgColor = fgColor;
+    term->bgColor = bgColor;
+
+    ReleaseLock(&term->lock);
+
+    return EOK;
+}
+
+//
+// Write a single character on the terminal
+//
+error_t PutOnTerm(Terminal_t *term, char ch)
+{
+    error_t retcode;
+
+    if (term == NULL) return EINVAL;
+    KalAssert(term->initDone == INITOK);
+
+    AquireLock(&term->lock);
+    retcode = term->PutOnTermUnlocked(term, ch);
+    ReleaseLock(&term->lock);
+
+    return retcode;
+}
+
+//
+// Print string on terminal
+//
+error_t PrintOnTerm(Terminal_t *term, const char *str)
+{
+    error_t retcode = EOK;
+
+    if (term == NULL) return EINVAL;
+    KalAssert(term->initDone == INITOK);
+
+    AquireLock(&term->lock);
+    while (*str && retcode == EOK) {
+        retcode = term->PutOnTermUnlocked(term, *str++);
+    }
+    ReleaseLock(&term->lock);
+
+    return retcode;
+}
+
+//----------------------------------------------------------//
+//           Internal functions for VGA terminals           //
+//           These DO NOT check input correctness           //
+//----------------------------------------------------------//
+
+//
+// VGA-related macros
+//
+#define VGA_ComputeColorCode(fg, bg)    ((fg) | (bg) << 4)
+#define VGA_ComputeOffset(term, x, y)   ((y) * (term)->width + (x))
+#define VGA_ComputeEntry(ch, cl)        (((ushort)(ch)) | (ushort)(cl) << 8)
+
+//
+// Fill terminal with '\0'
+//
+error_t VGA_ClearTermUnlocked(Terminal_t *term)
+{
+    const uchar  color   = VGA_ComputeColorCode(term->fgColor, term->bgColor);
+    const ushort filler  = VGA_ComputeEntry('\0', color);
+    const size_t bufsize = term->width * term->height;
+
+    // Fill the buffer
+    memsetw((ushort *)term->data, filler, bufsize);
+
+    // XXX update cursor too
+    term->currentX = term->currentY = 0;
+
+    return EOK;
+}
+
+//
+// Write a single character on the terminal
+//
+error_t VGA_PutOnTermUnlocked(Terminal_t *term, char ch)
+{
+    uint i;
+    size_t prevY;
+
+    if (ch == '\r') {
+        term->currentX = 0;
+        return EOK;
+    }
+
+    //
+    // Line feed first takes us to the very end of the line
+    // Later in this function we actually do the line feed
+    //
+    else if (ch == '\n') {
+        term->currentY = term->width - 1;
+    }
+
+    //
+    // Tabulations account for "term->tabSize" spaces
+    //
+    else if (ch == '\t') {
+        prevY = term->currentY;
+        for (i = 0; i < term->tabSize; i++) {
+            //
+            // Make sure tabulations can't spread over two lines
+            //
+            if (term->currentY == prevY) {
+                VGA_PutOnTermUnlocked(term, ' ');
+            }
+        }
+    }
+
+    else {
+        ushort      *buffer  = (ushort *)term->data;
+        const size_t offset = VGA_ComputeOffset(term, term->currentY, term->currentY);
+        buffer[offset] = VGA_ComputeEntry(ch, VGA_ComputeColorCode(term->fgColor, term->bgColor));
+    }
+
+    //
+    // Did we reach the end of line?
+    //
+    if (++term->currentX == term->width) {
+        term->currentX = 0;
+
+        //
+        // Did we reach the buffer's end?
+        //
+        if (++term->currentY == term->height) {
+            //
+            // XXX scroll up
+            //
+            term->currentY = 0;
+        }
+    }
+
+    //
+    // Nothing can go wrong
+    //
+    return EOK;
+}
+
+//
+// Print string on terminal
+//
+error_t VGA_PrintOnTermUnlocked(Terminal_t *term, const char *str)
+{
+    error_t retcode = EOK;
+
+    while (*str && retcode == EOK) {
+        retcode = term->PutOnTermUnlocked(term, *str++);
+    }
+
+    return retcode;
+}
+
+//
+// VGA output
+//
+static Terminal_t vgaTerm = {
+    .initDone   = FALSE,
+    .lock       = INITLOCK(KLOCK_MUTEX),
+
+    .name       = "VGA Output Terminal",
+    .type       = "VGA",
+
+    .data       = (void *)0xB8000,
+    .width      = 80,
+    .height     = 25,
+    .currentX   = 0,
+    .currentY   = 0,
+
+    .tabSize    = KTABSIZE,
+    .fgColor    = KTERM_COLOR_LGREY,
+    .bgColor    = KTERM_COLOR_BLACK,
+
+    .ClearTermUnlocked      = VGA_ClearTermUnlocked,
+    .PutOnTermUnlocked      = VGA_PutOnTermUnlocked,
+    .PrintOnTermUnlocked    = VGA_PrintOnTermUnlocked,
+};
+

kaleid/kernel/proc/Makefile

@@ -0,0 +1,4 @@
+
+sched-test:
+	gcc -O2 -masm=intel -I../../include ./sched.c
+

kaleid/kernel/proc/sched.c

@@ -0,0 +1,409 @@
+//----------------------------------------------------------------------------//
+//                           GNU GPL OS/K                                     //
+//                                                                            //
+//  Authors:    spectral`                                                     //
+//              NeoX                                                          //
+//                                                                            //
+//  Desc:       Scheduling algorithm                                          //
+//----------------------------------------------------------------------------//
+
+#include <kernel/kernsched.h>
+
+#ifndef _KALEID_KERNEL
+
+#include <stdio.h>
+CREATE_PER_CPU(CurProc, Process_t *);
+
+//
+// For test purpose only
+//
+int       procslen = 9;
+Process_t procs[] = {
+    { 0, 0, 0, 12, 12, STATE_RUNNABLE, DEF_PROC_TSLICE, DEF_PROC_TSLICE, NULL   },
+    { 1, 2, 2, 16, 16, STATE_RUNNABLE, DEF_PROC_TSLICE, DEF_PROC_TSLICE, NULL   },
+    { 2, 3, 3, 31, 31, STATE_RUNNABLE, DEF_PROC_TSLICE, DEF_PROC_TSLICE, NULL   },
+    { 3, 2, 2, 1,  1,  STATE_RUNNABLE, DEF_PROC_TSLICE, DEF_PROC_TSLICE, NULL   },
+    { 4, 0, 0, 5,  5,  STATE_RUNNABLE, DEF_PROC_TSLICE, DEF_PROC_TSLICE, NULL   },
+    { 5, 0, 0, 30, 30, STATE_RUNNABLE, DEF_PROC_TSLICE, DEF_PROC_TSLICE, NULL   },
+    { 6, 1, 1, 19, 19, STATE_RUNNABLE, DEF_PROC_TSLICE, DEF_PROC_TSLICE, NULL   },
+    { 7, 1, 1, 0,  0,  STATE_RUNNABLE, DEF_PROC_TSLICE, DEF_PROC_TSLICE, NULL   },
+    { 8, 3, 3, 12, 12, STATE_RUNNABLE, DEF_PROC_TSLICE, DEF_PROC_TSLICE, NULL   },
+};
+
+#endif
+
+//
+// Set current process
+// TODO Select thread, context switch
+//
+static inline
+void SetCurProc(Process_t *proc)
+{
+    _SetCurProc(proc);
+    if (GetCurProc() != NULL) {
+        GetCurProc()->procState = STATE_RUNNING;
+    }
+}
+
+//
+// (Un)Lock priority class list heads
+//
+
+static inline
+void SchedLock(void) {
+#ifdef _KALEID_KERNEL
+    DisableIRQs();
+#endif
+}
+
+static inline
+void SchedUnlock(void) {
+#ifdef _KALEID_KERNEL
+    EnableIRQs();
+#endif
+}
+
+//
+// The four priority classes of OS/2
+//
+CREATE_PER_CPU(IdlePrioProcs, ListHead_t *);
+CREATE_PER_CPU(ReglPrioProcs, ListHead_t *);
+CREATE_PER_CPU(ServPrioProcs, ListHead_t *);
+CREATE_PER_CPU(TimeCritProcs, ListHead_t *);
+
+char *PrioClassesNames[] = {
+            "Idle priority class",
+            "Regular priority class",
+            "Server priority class",
+            "Time-critical class",
+};
+
+enum {      IDLE_PRIO_PROC = 0,
+            REGL_PRIO_PROC = 1,
+            SERV_PRIO_PROC = 2,
+            TIME_CRIT_PROC = 3,
+};
+
+//
+// Get priority class list head
+//
+static inline
+ListHead_t *GetPrioClassHead(int prioClass)
+{
+    switch (prioClass) {
+        case TIME_CRIT_PROC: return GetTimeCritProcs();
+        case SERV_PRIO_PROC: return GetServPrioProcs();
+        case REGL_PRIO_PROC: return GetReglPrioProcs();
+        case IDLE_PRIO_PROC: return GetIdlePrioProcs();
+        default: KalAssert(FALSE && "Unknown priority class");
+    }
+
+    return NULL;
+}
+
+//
+// Determine which process is going to run first
+// Return NULL for "equal" processes
+//
+static inline
+Process_t *CompareProcs(Process_t *proc1, Process_t *proc2)
+{
+    KalAssert(proc1 && proc2);
+
+    if (proc1->prioClass > proc2->prioClass) return proc1;
+    if (proc1->prioClass < proc2->prioClass) return proc2;
+
+    if (proc1->prioLevel > proc2->prioLevel) return proc1;
+    if (proc1->prioLevel < proc2->prioLevel) return proc2;
+
+    return NULL; // same class and level
+}
+
+//
+// Add process to schedule lists (unlocked)
+//
+static inline
+void SchedThisProcUnlocked(Process_t *proc)
+{
+    KalAssert(proc && proc->procState == STATE_RUNNABLE);
+
+    bool found = false;
+    ListNode_t *iterNode = NULL;
+    ListNode_t *procNode = CreateNode(proc);
+    ListHead_t *head = GetPrioClassHead(proc->prioClass);
+
+    KalAssert(procNode && head);
+
+    proc->schedNode = procNode;
+
+    //printdbg("Adding process %d to '%s'\n", proc->pid, PrioClassesNames[proc->prioClass]);
+
+    //
+    // Find a process with lesser priority
+    //
+    for (iterNode = head->first; iterNode; iterNode = iterNode->next) {
+        if (proc->prioLevel > GetNodeData(iterNode, Process_t *)->prioLevel) {
+            AddNodeBefore(head, iterNode, procNode);
+            found = true;
+            break;
+        }
+    }
+
+    //
+    // Didn't find any process with lesser priority
+    //
+    if (found == false) {
+        AppendNode(head, procNode);
+    }
+}
+
+//
+// Add process to schedule lists
+//
+void SchedThisProc(Process_t *proc)
+{
+    SchedLock();
+
+    SchedThisProcUnlocked(proc);
+
+    SchedUnlock();
+}
+
+//
+// Selects process to schedule next
+//
+// WARNING
+//      Does not call SchedLock()/SchedUnlock()
+//
+static inline
+Process_t *SelectSchedNext(void)
+{
+    if (GetTimeCritProcs()->length > 0) return GetNodeData(GetTimeCritProcs()->first, Process_t *);
+    if (GetServPrioProcs()->length > 0) return GetNodeData(GetServPrioProcs()->first, Process_t *);
+    if (GetReglPrioProcs()->length > 0) return GetNodeData(GetReglPrioProcs()->first, Process_t *);
+    if (GetIdlePrioProcs()->length > 0) return GetNodeData(GetIdlePrioProcs()->first, Process_t *);
+
+    return NULL;
+}
+
+//
+// Remove running process from schedule lists
+// and schedule next runnable process
+//
+static inline
+void BlockCurProc(void)
+{
+    KalAssert(GetCurProc() && GetCurProc()->procState == STATE_RUNNING);
+
+    ListNode_t *procNode = GetCurProc()->schedNode;
+
+    GetCurProc()->procState = STATE_BLOCKED;
+    RemoveNode(procNode->head, procNode);
+
+    SetCurProc(SelectSchedNext());
+}
+
+//
+// Should we schedule another process?
+// Called at each tick
+//
+void SchedOnTick(void)
+{
+    Process_t *procNext;
+    Process_t *winner;
+
+    SchedLock();
+
+    //
+    // We're either idle or running something
+    //
+    KalAssert(GetCurProc() == NULL || GetCurProc()->procState == STATE_RUNNING);
+
+    //
+    // Has current process spent his timeslice?
+    // (To be handled in CPU decisions function)
+    //
+    if (GetCurProc() != NULL) {
+        if (GetCurProc()->timeSlice <= 1) {
+
+            // Restore default attributes, cancelling boosts
+            GetCurProc()->prioClass = GetCurProc()->defPrioClass;
+            GetCurProc()->prioLevel = GetCurProc()->defPrioLevel;
+            GetCurProc()->timeSlice = GetCurProc()->defTimeSlice;
+            GetCurProc()->procState = STATE_RUNNABLE;
+
+            // Remove from list
+            RemoveNode(GetCurProc()->schedNode->head, GetCurProc()->schedNode);
+
+            // Schedule again, with default attributes now
+            SchedThisProcUnlocked(GetCurProc());
+
+            // Mark as idle
+            SetCurProc(NULL);
+        }
+
+        //
+        // Otherwise, make him lose a tick
+        //
+        else {
+            GetCurProc()->timeSlice--;
+        }
+    }
+
+    //
+    // Are we idle, or scheduling next process?
+    //
+    if (GetCurProc() == NULL) {
+        SetCurProc(SelectSchedNext());
+        goto leave;
+    }
+
+    //
+    // Is there a higher priority process that is runnable?
+    //
+    procNext = SelectSchedNext();
+    winner = CompareProcs(GetCurProc(), procNext);
+
+    //
+    // Yes, procNext should preempt current process
+    //
+    if (winner == procNext) {
+        GetCurProc()->procState = STATE_RUNNABLE;
+        SchedThisProcUnlocked(GetCurProc());
+        SetCurProc(procNext);
+    }
+
+    //
+    // Current process won't be preempted and has time remaining
+    //
+leave:
+    SchedUnlock();
+}
+
+#define PrintProc(proc) printdbg("{ %d, '%s', %d , %d}\n", (proc)->pid, \
+                                 PrioClassesNames[(proc)->prioClass], (proc)->prioLevel, (proc)->timeSlice);
+
+//
+// Print out process list
+//
+void PrintList(ListHead_t *head)
+{
+    KalAssert(head);
+
+    Process_t *proc;
+    ListNode_t *node = head->first;
+
+    printdbg("len: %d\n", head->length);
+
+    while (node) {
+        proc = GetNodeData(node, Process_t *);
+
+        PrintProc(proc);
+
+        node = node->next;
+    }
+
+    puts("");
+}
+
+//
+// Initialize scheduler
+//
+void InitSched(void)
+{
+    int pid;
+    Process_t *proc;
+
+    SchedLock();
+
+    _SetTimeCritProcs(CreateListHead());
+    _SetServPrioProcs(CreateListHead());
+    _SetReglPrioProcs(CreateListHead());
+    _SetIdlePrioProcs(CreateListHead());
+
+#ifndef _KALEID_KERNEL
+    for (pid = 0; pid < procslen; pid++) {
+        if (procs[pid].procState == STATE_RUNNABLE) {
+            SchedThisProcUnlocked(&procs[pid]);
+        }
+    }
+#endif
+
+    SchedUnlock();
+}
+
+//
+// Shutdown scheduler
+//
+void FiniSched(void)
+{
+    KalAssert(GetIdlePrioProcs() && GetReglPrioProcs() && GetServPrioProcs() && GetTimeCritProcs());
+
+    SchedLock();
+
+    while (GetIdlePrioProcs()->length > 0) RemoveNode(GetIdlePrioProcs(), GetIdlePrioProcs()->first);
+    while (GetReglPrioProcs()->length > 0) RemoveNode(GetReglPrioProcs(), GetReglPrioProcs()->first);
+    while (GetServPrioProcs()->length > 0) RemoveNode(GetServPrioProcs(), GetServPrioProcs()->first);
+    while (GetTimeCritProcs()->length > 0) RemoveNode(GetTimeCritProcs(), GetTimeCritProcs()->first);
+
+    DestroyListHead(GetIdlePrioProcs()); _SetIdlePrioProcs(NULL);
+    DestroyListHead(GetReglPrioProcs()); _SetReglPrioProcs(NULL);
+    DestroyListHead(GetServPrioProcs()); _SetServPrioProcs(NULL);
+    DestroyListHead(GetTimeCritProcs()); _SetTimeCritProcs(NULL);
+
+    SchedUnlock();
+}
+
+#ifndef _KALEID_KERNEL
+int main(void)
+{
+    InitSched();
+
+    puts("---------------");
+
+    puts("Time Critical:");
+    PrintList(GetTimeCritProcs());
+
+    puts("Server:");
+    PrintList(GetServPrioProcs());
+
+    puts("Regular:");
+    PrintList(GetReglPrioProcs());
+
+    puts("Idle:");
+    PrintList(GetIdlePrioProcs());
+
+    puts("---------------");
+
+    getchar();
+
+    int tick = 0;
+
+    while (tick < 20) {
+        printf("Tick %d - Running: ", tick);
+
+        if (GetCurProc() == NULL) {
+            puts("IDLE");
+        }
+
+        else {
+            PrintProc(GetCurProc());
+        }
+
+        if (tick == 9 || tick == 14) {
+            puts("Blocking current process");
+            BlockCurProc();
+        }
+
+        SchedOnTick();
+
+        //puts("\n---------------");
+        tick++;
+    }
+
+    FiniSched();
+
+    return 0;
+}
+#endif
+

src/CONTACT

@@ -1 +0,0 @@
-XXX

src/COPYING

@@ -1,675 +0,0 @@
-                    GNU GENERAL PUBLIC LICENSE
-                       Version 3, 29 June 2007
-
- Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
-
-                            Preamble
-
-  The GNU General Public License is a free, copyleft license for
-software and other kinds of works.
-
-  The licenses for most software and other practical works are designed
-to take away your freedom to share and change the works.  By contrast,
-the GNU General Public License is intended to guarantee your freedom to
-share and change all versions of a program--to make sure it remains free
-software for all its users.  We, the Free Software Foundation, use the
-GNU General Public License for most of our software; it applies also to
-any other work released this way by its authors.  You can apply it to
-your programs, too.
-
-  When we speak of free software, we are referring to freedom, not
-price.  Our General Public Licenses are designed to make sure that you
-have the freedom to distribute copies of free software (and charge for
-them if you wish), that you receive source code or can get it if you
-want it, that you can change the software or use pieces of it in new
-free programs, and that you know you can do these things.
-
-  To protect your rights, we need to prevent others from denying you
-these rights or asking you to surrender the rights.  Therefore, you have
-certain responsibilities if you distribute copies of the software, or if
-you modify it: responsibilities to respect the freedom of others.
-
-  For example, if you distribute copies of such a program, whether
-gratis or for a fee, you must pass on to the recipients the same
-freedoms that you received.  You must make sure that they, too, receive
-or can get the source code.  And you must show them these terms so they
-know their rights.
-
-  Developers that use the GNU GPL protect your rights with two steps:
-(1) assert copyright on the software, and (2) offer you this License
-giving you legal permission to copy, distribute and/or modify it.
-
-  For the developers' and authors' protection, the GPL clearly explains
-that there is no warranty for this free software.  For both users' and
-authors' sake, the GPL requires that modified versions be marked as
-changed, so that their problems will not be attributed erroneously to
-authors of previous versions.
-
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-stand ready to extend this provision to those domains in future versions
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-
-  Finally, every program is threatened constantly by software patents.
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-
-  The precise terms and conditions for copying, distribution and
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-
-                       TERMS AND CONDITIONS
-
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-
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-

src/Makefile

@@ -1,95 +0,0 @@
-#----------------------------------------------------------------------------#
-#                           GNU GPL OS/K                                     #
-#                                                                            #
-#  Authors:    spectral`                                                     #
-#              NeoX                                                          #
-#                                                                            #
-#  Desc:       Project Makefile                                              #
-#----------------------------------------------------------------------------#
-
-CCNAME="/opt/cross-cc/bin/x86_64-elf-gcc"
-CC2NAME=gcc # compiler for testing
-CLDSCR=-T kernel.ld
-CWARNS= -pedantic -Wall -Wextra -Werror
-CFLAGS=-nostdlib -ffreestanding -mcmodel=large -mno-red-zone -mno-mmx -mno-sse -mno-sse2
-CINCLUDES=-I./kaleid
-CDEFINES=
-
-CC=$(CCNAME) $(CWARNS) $(CFLAGS) $(CDEFINES) $(CINCLUDES)
-KCC=$(CC) -D_KALEID_KERNEL
-
-ASM=nasm
-ASMFLAGS=
-BOOTFLAGS=-f bin
-
-BINDIR=../bin
-OBJDIR=../obj
-
-BOOTDIR=boot
-COMMDIR=kaleid/common
-KERNDIR=kaleid/kernel
-SYSTDIR=kaleid/system
-LINXDIR=kaleid/linux
-
-all: bootloader
-
-boot.mbr.s: $(BOOTDIR)/mbr.s $(BOOTDIR)/mbr.inc
-	$(ASM) $(BOOTFLAGS) $(BOOTDIR)/mbr.s -o $(OBJDIR)/boot/mbr.bin
-
-boot.loader.s: $(BOOTDIR)/loader.s
-	$(ASM) $(BOOTFLAGS) $(BOOTDIR)/loader.s -o $(OBJDIR)/boot/loader.bin
-
-bootloader: boot.mbr.s boot.loader.s
-	cp $(OBJDIR)/boot/mbr.bin $(BINDIR)/mbr.bin
-	cp $(OBJDIR)/boot/loader.bin $(BINDIR)/loader.bin
-    
-#----------------------------------------------------------------------------#
-# TESTING MAKEFILE
-
-pseudo_kern:
-	$(ASM) $(BOOTFLAGS) $(BOOTDIR)/pseudo_kernel.s -o $(OBJDIR)/boot/pkernel.bin
-
-testing: bootloader pseudo_kern
-	cat $(BINDIR)/bootloader.bin $(OBJDIR)/boot/pkernel.bin > $(BINDIR)/boot.bin
-
-#----------------------------------------------------------------------------#
-# COMMON MAKEFILE
-
-COBJDIR=$(OBJDIR)/$(COMMDIR)
-LOBJDIR=$(OBJDIR)/$(LINXDIR)
-
-COMMDEPS=$(COMMDIR)/common.h $(COMMDIR)/assert.h $(COMMDIR)/atomic.h $(COMMDIR)/config.h \
-			$(COMMDIR)/status.h
-
-COMMOBJS=$(COBJDIR)/lib/string.o $(COBJDIR)/lib/status.o
-
-common: $(COMMDEPS) $(COMMDIR)/lib/string.c $(COMMDIR)/lib/status.c
-	$(KCC) -c $(COMMDIR)/lib/string.c -o $(COBJDIR)/lib/string.o
-	$(KCC) -c $(COMMDIR)/lib/status.c -o $(COBJDIR)/lib/status.o
-
-CCC=$(CC2NAME) $(CWARNS) $(CDEFINES) $(CINCLUDES) 
-
-common-test:
-	$(CCC) -c $(COMMDIR)/lib/string.c -o $(COBJDIR)/lib/string.o
-	$(CCC) -c $(COMMDIR)/lib/status.c -o $(COBJDIR)/lib/status.o
-	$(CCC) -c $(LINXDIR)/test-common.c -o $(LOBJDIR)/test-common.o
-	$(CCC) $(COMMOBJS) $(LOBJDIR)/test-common.o -o $(BINDIR)/kaleid-common.elf
-
-#----------------------------------------------------------------------------#
-# KERNEL MAKEFILE
-
-KOBJDIR=$(OBJDIR)/$(KERNDIR)
-
-KERNDEPS=common $(KERNDIR)/init.h $(KERNDIR)/io/terminal.h $(KERNDIR)/io/ports.h $(KERNDIR)/ke/panic.h
-KERNSRCS=$(KERNDIR)/init.c $(KERNDIR)/ke/panic.c $(KERNDIR)/io/ports.c $(KERNDIR)/io/terminal.c
-KERNOBJS=$(KOBJDIR)/init.o $(KOBJDIR)/ke/panic.o $(KOBJDIR)/io/ports.o $(KOBJDIR)/io/terminal.o
-
-kernel: common $(KERNSRCS)
-	$(KCC) -c $(KERNDIR)/init.c         -o $(KOBJDIR)/init.o
-	$(KCC) -c $(KERNDIR)/ke/panic.c     -o $(KOBJDIR)/ke/panic.o
-	$(KCC) -c $(KERNDIR)/io/ports.c     -o $(KOBJDIR)/io/ports.o
-	$(KCC) -c $(KERNDIR)/io/terminal.c  -o $(KOBJDIR)/io/terminal.o
-	$(KCC) $(CLDSCR) $(COMMOBJS) $(KERNOBJS) -o $(BINDIR)/kaleid-kernel.elf
-
-#----------------------------------------------------------------------------#
-

src/kaleid/common/assert.h

@@ -1,51 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       Assertions                                                    //
-//----------------------------------------------------------------------------//
-
-#ifndef _KALCOMM_ASSERT_H
-#define _KALCOMM_ASSERT_H
-
-#ifndef _KALCOMM_COMMON_H
-#error "don't include common/types.h without common/common.h"
-#endif
-
-#ifdef _OSK_SOURCE
-
-#if !defined(_NO_DEBUG) && !defined(NDEBUG)
-
-// uses panic() in kernel, abort() in system
-noreturn void ___assert_handler(const char *, const char *, int, const char *);
-
-#define assert(x) do{if(unlikely(!(x)))___assert_handler(#x, __FILE__, __LINE__, __func__);}while(0);
-
-#else // not debugging
-
-#if !defined(NDEBUG)
-#define NDEBUG 1
-#endif
-
-#if !defined(_NO_DEBUG)
-#define _NO_DEBUG 1
-#endif
-
-#define assert(x)
-
-#endif
-
-#else // !defined(_OSK_SOURCE)
-
-#if defined(_NO_DEBUG) && !defined(NDEBUG)
-#define NDEBUG 1
-#endif
-
-#include <assert.h>
-
-#endif
-
-#endif
-

src/kaleid/common/atomic.h

@@ -1,29 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       Atomic stuff                                                  //
-//----------------------------------------------------------------------------//
-
-#ifndef _KALCOMM_ATOMIC_H
-#define _KALCOMM_ATOMIC_H
-
-#ifndef _KALCOMM_COMMON_H
-#error "don't include common/types.h without common/common.h"
-#endif
-
-// atomic_t defined in common/types.h
-
-#ifdef _KALEID_KERNEL
-
-// only available in the kernel
-#define cli() asm volatile ("cli")
-#define sti() asm volatile ("sti")
-#define hlt() asm volatile ("hlt")
-
-#endif
-
-#endif
-

src/kaleid/common/common.h

@@ -1,51 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       Standard include file for both kernel/ and system/            //
-//----------------------------------------------------------------------------//
-
-#ifndef _KALCOMM_COMMON_H
-#define _KALCOMM_COMMON_H
-
-#if !defined(_OSK_SOURCE) && (defined(_KALEID_KERNEL) || defined(_KALEID_SYSTEM))
-#define _OSK_SOURCE 1
-#endif
-
-#if !defined(TRUE) && !defined(FALSE)
-#   define TRUE 1
-#   define FALSE 0
-#endif
-
-#ifdef _OSK_SOURCE
-#   define YES   1
-#   define NO    0
-#endif
-
-#ifndef NULL
-#   define NULL ((void*)0)
-#endif
-
-#ifndef PACKED
-#   define     PACKED __attribute__((packed))
-#endif
-
-#ifndef noreturn
-#   define     noreturn __attribute__((noreturn))
-#endif
-
-#if !defined(likely) && !defined(unlikely)
-#   define likely(x)   __builtin_expect((x), 1)
-#   define unlikely(x) __builtin_expect((x), 0)
-#endif
-
-#include "common/types.h"
-#include "common/config.h"
-#include "common/atomic.h"
-#include "common/status.h"
-#include "common/assert.h"
-
-#endif
-

src/kaleid/common/config.h

@@ -1,42 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       Default configuration file                                    //
-//----------------------------------------------------------------------------//
-
-// XXX update the tree etc
-
-// This file is to be copied to "config.h" and edited before compilation
-// We may do a script that generates "config.h" for the user, asking about
-// the different configuration choices in the terminal.
-
-#ifndef _KALCOMM_CONFIG_H
-#define _KALCOMM_CONFIG_H
-
-//------------------------------------------//
-//		General configuration choices		//
-//------------------------------------------//
-
-//
-//  Enable/disable multiprocessor support
-//
-#define MULTIPROCESSOR NO
-
-//
-//  Enable/disable preemptivity
-//
-#define PREEMPTIVE YES
-
-//
-//  Size of a tabulation in spaces
-//  Default: 4 spaces/tab
-//
-#define TABSIZE 4
-
-// this file is to be progressively filled
-
-#endif
-

src/kaleid/common/config.h.in

@@ -1,42 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       Default configuration file                                    //
-//----------------------------------------------------------------------------//
-
-// XXX update the tree etc
-
-// This file is to be copied to "config.h" and edited before compilation
-// We may do a script that generates "config.h" for the user, asking about
-// the different configuration choices in the terminal.
-
-#ifndef _KALCOMM_CONFIG_H
-#define _KALCOMM_CONFIG_H
-
-//------------------------------------------//
-//		General configuration choices		//
-//------------------------------------------//
-
-//
-//  Enable/disable multiprocessor support
-//
-#define MULTIPROCESSOR NO
-
-//
-//  Enable/disable preemptivity
-//
-#define PREEMPTIVE YES
-
-//
-//  Size of a tabulation in spaces
-//  Default: 4 spaces/tab
-//
-#define TABSIZE 4
-
-// this file is to be progressively filled
-
-#endif
-

src/kaleid/common/folder.desc

@@ -1 +0,0 @@
-

src/kaleid/common/lib/memory.c

@@ -1,11 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       mem*() functions                                              //
-//----------------------------------------------------------------------------//
-
-#include "common/memory.h"
-

src/kaleid/common/lib/string.c

@@ -1,67 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       String-related functions                                      //
-//----------------------------------------------------------------------------//
-
-#include "common/string.h"
-
-//  TODO multibyte, assembly
-
-//
-//  Returns str's length
-//
-size_t strlen(const char *str)
-{
-    const char *base = str;
-
-    while (*str++);
-
-    return (str - base - 1);
-}
-
-//
-//  Copy the string src into dest
-//
-char *strcpy(char *dest, const char *src)
-{
-    char *base = dest;
-    while ((*dest++ = *src++));
-    return base; 
-}
-
-//
-//  strcpy() but safer
-//
-char *strncpy(char *dest, const char *src, size_t n)
-{
-    size_t i;
-
-    for (i = 0; i < n && src[i]; i++) {
-        dest[i] = src[i];
-    }
-
-    while (i < n) dest[i++] = 0;
-    return dest;
-}
-
-//
-//  Reverses a string
-//
-char *reverse(char *str)
-{
-    char ch, *orig = str;
-    size_t n = strlen(str);
-    char *temp = str + n - 1;
-
-    while (temp > str) {
-        ch = *temp;
-        *temp-- = *str;
-        *str++ = ch;
-    }
-    
-    return orig;
-}

src/kaleid/common/memory.h

@@ -1,18 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       mem*() functions                                              //
-//----------------------------------------------------------------------------//
-
-#ifndef _KALCOMM_MEMORY_H
-#define _KALCOMM_MEMORY_H
-
-#ifndef _KALCOMM_COMMON_H
-#include "common/common.h"
-#endif
-
-#endif
-

src/kaleid/common/status.h

@@ -1,41 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       Values for status_t                                           //
-//----------------------------------------------------------------------------//
-
-#ifndef _KALCOMM_STATUS_H
-#define _KALCOMM_STATUS_H
-
-#ifndef _KALCOMM_COMMON_H
-#error "don't include common/types.h without common/common.h"
-#endif
-
-#ifndef _OSK_SOURCE
-#   define describe_status _osk_describe_status
-#endif
-
-// see in common/lib/status.c for status messages
-const char *describe_status(status_t);
-
-#define STATUS_FAILED(x)  ((x) < 0))
-#define STATUS_SUCCESS(x) (!STATUS_FAILED(x))
-
-#define SUCCESS            (0)          // everything went fine
-
-#define FAILED             (-1)
-#define ERROR              FAILED       // something went wrong, can't be more precise
-#define NOT_PERMITTED      (-2)
-#define ACCESS_DENIED      (-3)
-
-#define BAD_ARGUMENT      (-4)         // invalid arguments, can't be more precise
-#define BAD_ARG_RANGE     (-5)         // arguments out of range
-#define BAD_ARG_NULL      (-6)         // unexpected NULL argument
-
-#define TRY_AGAIN         (-7)         // EAGAIN
-
-#endif
-

src/kaleid/common/string.h

@@ -1,43 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       Kaleid string library                                         //
-//----------------------------------------------------------------------------//
-
-
-#ifndef _KALCOMM_STRING_H
-#define _KALCOMM_STRING_H
-
-#ifndef _KALCOMM_COMMON_H
-#include "common/common.h"
-#endif
-
-#ifndef _OSK_SOURCE
-
-#   define strlen _osk_strlen
-#   define strcpy _osk_strcpy
-#   define strncpy _osk_strncpy
-#   define reverse _osk_reverse
-
-#   define sprintf _osk_sprintf
-#   define snprintf _osk_snprintf
-#   define vsprintf _osk_vsprintf
-#   define vsnprintf _osk_vsnprintf
-
-#endif
-
-size_t strlen(const char *);
-char *strcpy(char *, const char *);
-char *strncpy(char *, const char *, size_t);
-char *reverse(char *);
-
-int sprintf(char *, const char *, ...);
-int snprintf(char *, size_t, const char *, ...);
-int vsprintf(char *, const char *, va_list);
-int vsnprintf(char *, size_t, const char *, va_list);
-
-#endif
-

src/kaleid/common/types.h

@@ -1,43 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       Essential types for Kaleid                                    //
-//----------------------------------------------------------------------------//
-
-
-#ifndef _KALCOMM_TYPES_H
-#define _KALCOMM_TYPES_H
-
-#ifndef _KALCOMM_COMMON_H
-#error "don't include common/types.h without common/common.h"
-#endif
-
-#ifndef KEEP_KALCOMM_TYPES_MINIMAL
-typedef _Bool               bool;
-typedef unsigned char       uchar;
-typedef unsigned short      ushort;
-typedef unsigned int        uint;
-typedef unsigned long       ulong;
-typedef long long           llong;
-typedef unsigned long long  ullong;
-typedef long double         ldouble;
-typedef uint                wchar_t;
-typedef ullong              size_t;
-typedef llong               ssize_t;
-typedef size_t              off_t;
-typedef int                 atomic_t;
-typedef ulong               pid_t;
-typedef void               *va_list;
-#endif
-
-typedef short               port_t;
-typedef short               status_t;
-// XXX limits
-
-#endif
-
-
-

src/kaleid/kernel/folder.desc

@@ -1,44 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       Folder description - "kaleid/kernel"                          //
-//----------------------------------------------------------------------------//
-
-This is the folder containing the source of Kaleid's kernel.
-
-It contains the following files:
-    - init.c
-        The file containing the entry point of Kaleid, the kstart() function
-        called from the bootloader (see ../../boot).
-
-This folder also has the following subfolders
-(for more information on a particular subfolder, see {name}/folder.desc)
-    - mm/
-        This folder contains all files related to memory management.
-
-    - fs/
-        This folder contains Kaleid's virtual filesystem, as well as one
-        subfolder for each FS supported by Kaleid (e.g. FAT filesystem).
-
-    - io/
-        I/O folder.                 (XXX)
-
-    - ps/
-        This folder contains Kaleid's process manager and scheduler, as well as the
-        implementation of the related syscalls and functions.
-
-    - ex/
-        This folder contains the exec()-related functions and syscalls, as well
-        as one subfolder per executable format supported by Kaleid (e.g. ELF executable)
-
-    - se/
-        Security folder.            (XXX)
-
-    - sys/
-        Syscall folder.             (XXX)
-
-
-

src/kaleid/kernel/io/ports.c

@@ -1,13 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       Ports I/O                                                     //
-//----------------------------------------------------------------------------//
-
-#include "kernel/io/ports.h"
-
-
-

src/kaleid/kernel/io/terminal.c

@@ -1,186 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       Early terminal functions                                      //
-//----------------------------------------------------------------------------//
-
-#include "kernel/io/terminal.h"
-
-//
-//  VGA-related macros
-//
-#define ComputeColorCode(fg, bg) ((fg) | (bg) << 4)
-#define ComputeEntryOffset(kt, x, y) ((y) * kt->kt_width + (x))
-#define ComputeEntry(ch, cl) (((ushort)(ch)) | (ushort)(cl) << 8)
-
-//
-// VGA output
-//
-static struct kterm _kt_vga = {
-    .kt_buffer = (ushort *)0xB8000,
-    .kt_width  = 80,
-    .kt_height = 25,
-    .kt_curr_x = 0,
-    .kt_curr_y = 0,
-    .kt_color  = ComputeColorCode(KTERM_COLOR_LGREY, KTERM_COLOR_BLACK),
-    .kt_lock   = NULL,
-#ifndef _NO_DEBUG
-    .kt_init   = FALSE,
-#endif
-};
-
-//
-//  Standard output terminal
-//
-struct kterm *kt_stdout;
-
-//
-//  Initialize standard output
-//
-void kterm_init(void)
-{
-    assert(!kt_stdout && !_kt_vga.kt_init && "kterm_init() called twice");
-    
-#ifndef _NO_DEBUG
-    _kt_vga.kt_init = TRUE;
-#endif
-
-    // to be switched to VESA
-    kt_stdout = &_kt_vga;
-    ktclear();
-}
-
-//
-//  Fills terminal with spaces
-//  XXX would '\0' work too?
-//
-status_t kterm_clear(struct kterm *kt)
-{
-    size_t i;
-
-    if (kt == NULL)
-        return BAD_ARG_NULL;
-
-    assert(kt->kt_init && "kterm_clear called before initialization");
-
-    kterm_lock(kt);
-
-    const ushort filler  = ComputeEntry(' ', kt->kt_color);
-    const size_t bufsize = kt->kt_width * kt->kt_height;
-
-    for (i = 0; i < bufsize; i++) {
-        // XXX implement memset()
-        kt->kt_buffer[i] = filler;
-    }
-    
-    kt->kt_curr_x = kt->kt_curr_y = 0;
-    
-    kterm_unlock(kt);
-    
-    return SUCCESS;
-}
-
-//
-//  Change the color code
-//
-status_t kterm_change_color(struct kterm *kt, uchar color)
-{
-    if (color > KTERM_COLOR_WHITE)
-        return BAD_ARG_RANGE;
- 
-    if (kt == NULL)
-        return BAD_ARG_NULL;
- 
-    kterm_lock(kt);   
-    kt->kt_color = color;
-    kterm_unlock(kt);
-
-    return SUCCESS;    
-}
-
-//
-//  Writes a single character on the terminal (UNLOCKED version)
-//
-//  DEPRECATED:
-//      - always use kterm_putch (LOCKED version) 
-//      - doesn't check for NULL input
-//
-void kterm_putch_unlocked(struct kterm *kt, char ch)
-{
-    int i;
-    size_t prev_row;
-
-    // carriage return takes us back to the beginning of the line
-    // no further test should be necessary
-    if      (ch == '\r') { kt->kt_curr_x = 0; return; }
-    
-    // line feed first takes us to the very end of the line
-    // later in this function we actually do the line feed
-    else if (ch == '\n') { kt->kt_curr_y = kt->kt_width - 1; }
-    
-    // tabulations account for 4 spaces
-    else if (ch == '\t') {
-        prev_row = kt->kt_curr_y;
-        // compiler will optimize this away
-        for (i = 0; i < TABSIZE; i++) {
-            // tabulations can't spread over two lines
-            if (kt->kt_curr_y == prev_row) {
-                kterm_putch_unlocked(kt, ' ');
-            }
-        }
-    }
-    
-    // XXX check whether we were given a writable character
-    else {
-        const size_t offset = ComputeEntryOffset(kt, kt->kt_curr_x, kt->kt_curr_y);
-        kt->kt_buffer[offset] = ComputeEntry(ch, kt->kt_color);
-    }
-
-    // end of line?
-    if (++kt->kt_curr_x == kt->kt_width) {
-        kt->kt_curr_x = 0;
-        
-        // line feed + end of buffer?
-        if (++kt->kt_curr_y == kt->kt_height) {
-            kt->kt_curr_y = 0;
-        }
-    }
-}
-
-// 
-//  Writes a single character on the terminal (LOCKED version)
-//
-status_t kterm_putch(struct kterm *kt, char ch)
-{
-    if (kt == NULL)
-        return BAD_ARG_NULL;
-
-    kterm_lock(kt);
-    kterm_putch_unlocked(kt, ch);
-    kterm_unlock(kt);
-
-    return SUCCESS;
-}
-
-
-//
-//  Print string on kterminal
-//
-status_t kterm_print(struct kterm *kt, const char *str) 
-{
-    if (kt == NULL)
-        return BAD_ARG_NULL;
-
-    kterm_lock(kt);
-    while (*str) {
-        kterm_putch_unlocked(kt, *str++);
-    }
-    kterm_unlock(kt);
-    
-    return SUCCESS;
-}
-
-

src/kaleid/kernel/io/terminal.h

@@ -1,64 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       Early terminal functions                                      //
-//----------------------------------------------------------------------------//
-
-#ifndef _KALKERN_IO_KTERM_H
-#define _KALKERN_IO_KTERM_H
-
-#include "common/common.h"
-
-// all available colors
-enum kterm_color {
-    KTERM_COLOR_BLACK,      KTERM_COLOR_BLUE,
-    KTERM_COLOR_GREEN,      KTERM_COLOR_CYAN,
-    KTERM_COLOR_RED,        KTERM_COLOR_MAGENTA,
-    KTERM_COLOR_BROWN,      KTERM_COLOR_LGREY,
-    KTERM_COLOR_DARK_GREY,  KTERM_COLOR_LBLUE,
-    KTERM_COLOR_LGREEN,     KTERM_COLOR_LCYAN,
-    KTERM_COLOR_LRED,       KTERM_COLOR_LMAGENTA,
-    KTERM_COLOR_LBROWN,     KTERM_COLOR_WHITE
-};
-
-struct kterm {
-    void    *kt_lock;
-    ushort  *kt_buffer;
-    uchar    kt_color;
-    size_t   kt_width;
-    size_t   kt_height;
-    off_t    kt_curr_x;
-    off_t    kt_curr_y;
-#ifndef _NO_DEBUG
-    bool     kt_init;
-#endif
-    
-};
-
-// current "standard" terminal
-extern struct kterm *kt_stdout;
-
-void     kterm_init(void);
-status_t kterm_clear(struct kterm *);
-status_t kterm_putch(struct kterm *, char);
-status_t kterm_print(struct kterm *, const char *);
-status_t kterm_change_color(struct kterm *, uchar);
-
-#ifdef _UNLOCKED_IO
-void kterm_putch_unlocked(struct kterm *, char);
-#endif
-
-#define ktclear() kterm_clear(kt_stdout)
-#define ktputch(c) kterm_putch(kt_stdout, (c))
-#define ktprint(s) kterm_print(kt_stdout, (s))
-#define ktchcol(c) kterm_change_color(kt_stdout, (c))
-
-#define kterm_lock(kt)
-#define kterm_trylock(kt)
-#define kterm_unlock(kt)
-
-#endif
-

src/kaleid/kernel/ke/panic.c

@@ -1,59 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       How NOT to panic 101                                          //
-//----------------------------------------------------------------------------//
-
-#include "kernel/ke/panic.h"
-
-//
-//  Panic message
-//
-const char *panicstr = NULL;
-
-//
-//  Failed assert() handler
-//
-noreturn void ___assert_handler(const char *msg, const char *file, int line, const char *func)
-{
-    // not getting out of here
-    cli();
-    
-    (void)file; (void)line; (void)func;
-    
-    // XXX sprintf() to create a proper panicstr
-    panic(msg);
-}
-
-//
-//  Your best boy panic()
-//
-void panic(const char *str)
-{
-    cli();
-
-    ktclear();
-    
-    if (str == NULL) {
-        str = "(no message given)";
-    }
-    
-    if (panicstr) {
-        // shouldn't be possible
-        ktprint("double panic!\n");
-        hlt();
-    }
-
-    panicstr = str;
-
-    ktprint("panic! - ");
-    ktprint(str);
-
-    while (TRUE) {
-        hlt();
-    }
-}
-

src/kaleid/kernel/ke/panic.h

@@ -1,18 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       Looking to create some panic? Look no further!                //
-//----------------------------------------------------------------------------//
-
-#ifndef _KALKERN_KE_PANIC_H
-#define _KALKERN_KE_PANIC_H
-
-#include "kernel/io/terminal.h"
-
-extern const char *panicstr;
-noreturn void panic(const char *);
-
-#endif

src/kaleid/kernel/mm/malloc.c

@@ -1,12 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       Memory allocation routines                                    //
-//              Only exists to trigger Neox                                   //
-//----------------------------------------------------------------------------//
-
-#include "kernel/mm/malloc.h"
-

src/kaleid/kernel/mm/malloc.h

@@ -1,16 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       Memory allocation routines                                    //
-//----------------------------------------------------------------------------//
-
-#ifndef _KALKERN_MM_MALLOC_H
-#define _KALKERN_MM_MALLOC_H
-
-#include "common/common.h"
-
-#endif
-

src/kaleid/linux/test-common.c

@@ -1,44 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       Test file for common/                                         //
-//----------------------------------------------------------------------------//
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#define KEEP_KALCOMM_TYPES_MINIMAL
-
-#include "common/common.h"
-#include "common/string.h"
-
-int main(int argc, char *argv[])
-{
-    (void)argc;
-    (void)argv;
-    
-    const char *test1 = "test string\n";
-    char *test2 = malloc(strlen(test1));
-    char *test3 = malloc(strlen(test1));
-
-    printf("1\n");
-
-    #undef strlen
-    assert(strlen("test string") == _osk_strlen("test string"));
-    
-    #undef strcpy
-    assert(strcmp(strcpy(test2, test1), _osk_strcpy(test3, test1)) == 0);
-    
-    // tests done
-    printf("2\n");
-    
-    free(test2);
-    free(test3);
-    
-    return 0;
-}
-

src/project-style.txt

@@ -1,19 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       Notes on the coding style and                                 //
-//              conventions used throughout OS/K                               //
-//----------------------------------------------------------------------------//
-
-To keep naming conventions and code style, we have decided to create this file.
-How the code looks isn't the most important, so don't worry too much about this;
-making the code conform to this file can be done later.
-
-Every file within OS/K is written using spaces for tabulation, with each
-tabulation being 4 spaces long.
-
-(naming conventions here)
-

src/project-tree.txt

@@ -1,60 +0,0 @@
-//----------------------------------------------------------------------------//
-//                           GNU GPL OS/K                                     //
-//                                                                            //
-//  Authors:    spectral`                                                     //
-//              NeoX                                                          //
-//                                                                            //
-//  Desc:       Project Tree                                                  //
-//----------------------------------------------------------------------------//
- 
-// XXX *not* up to date
-
-src/
-    |
-    + boot/
-    |   |
-    |   x folder.desc
-    |   |
-    |   - mbr.s
-    |   - mbr.inc
-    |   |
-    |   - loader.s
-    |   - loader16.inc
-    |   - loader64.inc
-    |   |
-    |   - types.h
-    |
-    + kaleid/
-    |   |
-    |   + kernel/
-    |   |   |
-    |   |   x folder.desc
-    |   |   |
-    |   |   - init.c
-    |   |   - init.h
-    |   |   |
-    |   |   + io/
-    |   |       |
-    |   |       - ports.c
-    |   |       - ports.h
-    |   |       - terminal.c
-    |   |       - terminal.h
-    |   |
-    |   + common/
-    |       |
-    |       x folder.desc
-    |       |
-    |       - assert.h
-    |       - atomic.h
-    |       - common.h
-    |       - config.h
-    |       - config.h.in
-    |       - status.h
-    |       - string.h
-    |       - types.h
-    |       |
-    |       + lib/
-    |          |
-    |          - string.c
-    |
-    0