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Import backup from 2004-05-23

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This commit is contained in:
Josh Holtrop 2004-05-23 22:00:00 -04:00
parent a982312d2c
commit 6d941b7b16
12 changed files with 85 additions and 59 deletions
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2
kernel/Makefile
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@ -54,7 +54,6 @@ C_Kernel:
$(CPP) $(CPP_FLAGS) -c sys/pic.cpp -o pic.o
$(CPP) $(CPP_FLAGS) -c sys/io.cpp -o io.o
$(CPP) $(CPP_FLAGS) -c sys/cmos.cpp -o cmos.o
$(CPP) $(CPP_FLAGS) -c lang/string.cpp -o string.o
$(CPP) $(CPP_FLAGS) -c video/stdfont.cpp -o stdfont.o
$(CPP) $(CPP_FLAGS) -c video/video.cpp -o video.o
$(CPP) $(CPP_FLAGS) -c block/fdc.cpp -o fdc.o
@ -63,6 +62,7 @@ C_Kernel:
$(CPP) $(CPP_FLAGS) -c mm/mm.cpp -o mm.o
$(CPP) $(CPP_FLAGS) -c mm/vmm.cpp -o vmm.o
$(CPP) $(CPP_FLAGS) -c hos_defines.cpp -o hos_defines.o
$(CPP) $(CPP_FLAGS) -c lang/string.cpp -o string.o
$(CPP) $(CPP_FLAGS) -c fs/vfs.cpp -o vfs.o
#################################################

2
kernel/fs/vfat.cpp
View File

@ -7,7 +7,7 @@
#include "hos_defines.h"
#include "fs/vfs.h"
#include "mm/vmm.h"
#include "string/string.h"
#include "lang/string.h"
//From Microsoft's FAT32 File System Specification
DSKSZTOSECPERCLUS DskTableFAT16 [] =

24
kernel/fs/vfs.cpp
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@ -3,9 +3,9 @@
// Date: 03/11/04
// Modified: 03/16/04
#include "hos_defines.h"
#include "vfs.h"
//#include "fs/vfat.h"
#include "hos_defines.h"
//#include "block/rd.h"
//#include "block/loop.h"
#include "lang/LinkedList.h"
@ -13,7 +13,27 @@
void vfs_init()
{
LinkedList<int> test;
for (int i = 0; i < 100; i++)
test.insert(i/2, i);
printf("num: %d\t", test.numElements());
for (int i = 0; i < test.numElements(); i++)
printf("%d\t", test[i]);
while (test.numElements())
test.pop_back();
printf("\n");
for (int i = 0; i < 6; i++)
test.push_back(i << 1);
for (int i = 0; i < test.numElements(); i++)
printf("%d\t", test[i]);
printf("\nnum: %d\t", test.numElements());
while (test.numElements())
{
test.remove(0);
for (int i = 0; i < test.numElements(); i++)
printf("%d\t", test[i]);
printf("\n");
}
}

9
kernel/functions.h
View File

@ -28,7 +28,7 @@ static inline void disable_ints()
//Restarts the computer
static inline void restart()
{
enable_ints();
/* enable_ints();
byte temp;
do
{
@ -37,8 +37,13 @@ static inline void restart()
inportb(0x60);
} while(temp & 2);
outportb(0x64, 0xD4); //send command to mouse, not kbd
outportb(0x60, 0xF5); //disable data reporting
outportb(0x64, 0xA7); //disable mouse port
*/
outportb(0x64, 0xfe); //restart
outportb (0x64, 0xfe);
for (;;) {}
}

17
kernel/kernel.cpp
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@ -2,7 +2,7 @@
// Author: Josh Holtrop
// Date: 08/13/03
// Holtrop's Operating System - Version 0.13
// Modified: 03/08/04
// Modified: 05/21/04
#include "hos_defines.h" //#DEFINE's for kernel
@ -11,22 +11,22 @@
#include "kio.h" //kernel input/output functions
#include "mm/mm.h" //physical memory management functions
#include "mm/vmm.h" //virtual memory management & paging functions
#include "block/fdc.h" //Floppy Disk Controller
#include "char/keyboard.h" //generic keyboard driver & functions
#include "char/mouse.h" //generic ps/2 mouse driver & functions
#include "block/fdc.h" //Floppy Disk Controller functions
#include "sys/cmos.h" //CMOS interface functions
#include "sys/io.h" //port i/o functions
#include "sys/pic.h" //Programmable Interrupt Controller functions
#include "sys/rtc.h" //Real Time Clock functions
#include "video/video.h" //video functions
#include "fs/vfs.h"
#include "fs/vfs.h" //Virtual File System
extern "C" {
void isr(dword num);
void k_init();
dword timer = 0;
dword timer;
//Main kernel initialization method
void k_init()
@ -43,8 +43,11 @@ void k_init()
mouse_init();
pic_mask1(0); //unmask IRQ's 0-7
pic_mask2(0); //unmask IRQ's 8-15
timer = 0;
enable_ints();
kbd_resetLEDs(); //after enabling interrupts!!
// vfs_init();
if (video_Mode())
{
int w = video_getWidth(), h = video_getHeight();
@ -68,8 +71,6 @@ void k_init()
printf("Built on %s at %s\n", __DATE__, __TIME__);
printf("%b/%b/%b %b:%b:%b\n", rtc_readMonth(), rtc_readDay(), rtc_readYear(), rtc_readHour(), rtc_readMinute(), rtc_readSecond());
vfs_init();
dword key = 0;
for (;;)
{
@ -89,7 +90,7 @@ void isr(dword num)
halt();
break;
case 0x20: // IRQ0 - timer interrupt
timer++;
/*timer++;
(*(byte *)(0xc00b8000))++;
if (!(timer % 100))
{
@ -97,7 +98,7 @@ void isr(dword num)
kio_writeCursorPosition(72);
printf("%b:%b:%b\n", rtc_readHour(), rtc_readMinute(), rtc_readSecond());
kio_writeCursorPosition(curPos);
}
}*/
pic_eoi();
break;
case 0x21: // IRQ1 - keyboard interrupt

18
kernel/kio.cpp
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@ -8,7 +8,6 @@
#include "asmfuncs.h"
#include "video/video.h"
dword graphical;
dword cursorPosition; //Caches the current cursor position
word console_memory[2000]; //holds a copy of the console's memory
@ -18,9 +17,14 @@ extern "C" {
void kio_init()
{
graphical = video_Mode();
cursorPosition = 0;
writeCursorPosition(0);
word *vidmem = (word *)0xC00B8000;
for (int i = 0; i < 2000; i++)
{
console_memory[i] = 0x0720;
vidmem[i] = 0x0720;
}
}
void printf(char *fmt, ...)
@ -104,7 +108,7 @@ void putc(dword chr)
}
else
{
if (graphical)
if (video_Mode())
{
console_memory[cursorPosition] = charac | 0x0700;
kio_drawConsoleChar(cursorPosition);
@ -121,7 +125,7 @@ void putc(dword chr)
kio_console_scroll();
cursorPosition = 2000-80;
}
if (!graphical)
if (!video_Mode())
writeCursorPosition(cursorPosition);
}
@ -158,7 +162,7 @@ void kio_console_scroll()
{
memcpyd(console_memory, console_memory + 80, 960);
memsetw(console_memory + 1920, 0x0720, 80);
if (graphical)
if (video_Mode())
kio_drawConsole();
else
memcpyd((void *)0xC00B8000, console_memory, 1000);
@ -168,7 +172,7 @@ void kio_console_scroll()
void kio_console_cls()
{
memsetw(console_memory, 0x0720, 2000);
if (graphical)
if (video_Mode())
kio_drawConsole();
else
memcpyd((void *)0xC00B8000, console_memory, 1000);
@ -219,9 +223,9 @@ dword kio_getCursorPosition()
void kio_writeCursorPosition(dword position)
{
cursorPosition = position;
if (!graphical)
writeCursorPosition(position);
}
}

3
kernel/lang/LinkedList.cpp Normal file
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@ -0,0 +1,3 @@
#include "LinkedList.h"

2
kernel/lang/LinkedList.h
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@ -106,7 +106,7 @@ LinkedList<T>::LinkedList()
template <typename Element>
LinkedList<Element> & LinkedList<Element>::insert(int index, Element e)
{
if (index == count)
if (index == count-1)
push_back(e);
else if (index >= 0 && index < count)
{

5
kernel/mm/mm.cpp
View File

@ -8,8 +8,8 @@
//The total amount of physical memory available (bytes, 1 bit per page)
#define BITMAP_SIZE 0x20000
dword mm_totalmem = 0;
dword mm_megabytes = 0;
dword mm_totalmem;
dword mm_megabytes;
byte page_bitmap[BITMAP_SIZE]; //used to store a bit for each page that is used, 0 if available
//0x20000*(8 bits/byte)=0x100000 pages in 4gb total
@ -17,6 +17,7 @@ byte page_bitmap[BITMAP_SIZE]; //used to store a bit for each page that is used,
// memory areas returned by bios interrupt 0x8E20
void mm_init()
{
mm_totalmem = mm_megabytes = 0;
dword memmap_entries = *(dword *)BOOT_MEMMAP_ENTRIES;
memmap_entry *maps = (memmap_entry *) BOOT_FIRST_MEMMAP;
dword a;

42
kernel/mm/vmm.cpp
View File

@ -8,18 +8,18 @@
#include "vmm.h"
#include "asmfuncs.h"
#include "mm/mm.h"
#include "video/video.h"
HeapEntry *firstHeapEntry = (HeapEntry *)0xD0000000; //this is where heap memory starts
// This is the initialization procedure for the Virtual Memory Manager
// It sets up the final page directory/page table setup and maps video memory, if present
// It sets up the final page directory/page table setup
void vmm_init()
{
unsigned int *pageTables = (unsigned int *)0xC0104000; //this is the location of the page directory
pageTables[0x3FF] = 0x104000|0x03; //the last page directory entry points to the page directory itself
pageTables[0] = 0;
invlpg_(0);
unsigned int firstHeapEntryBlock = (unsigned int)mm_palloc();
vmm_map1((unsigned int)firstHeapEntry, firstHeapEntryBlock);
HeapEntryBlock *heb = (HeapEntryBlock *)firstHeapEntry;
@ -30,6 +30,13 @@ void vmm_init()
heb->entry[1].base = (unsigned int)firstHeapEntry+4096; //this is the start of the rest of the kernel's heap memory
heb->entry[1].size = 0x10000000-4096; //the rest of the kernel's heap memory: 256mb - 4kb
heb->entry[1].attributes = VMM_HE_HOLE; //this is a hole - an unmapped section of heap memory
unsigned int vidPages = video_getWidth() * video_getHeight() * (video_getBitsPerPixel() >> 3);
if (vidPages % 4096)
vidPages = (vidPages >> 12) + 1;
else
vidPages = (vidPages >> 12);
vmm_mapn(0xF0000000, video_getPhysBasePtr(), vidPages);
}
@ -122,7 +129,7 @@ void *malloc(unsigned int bytes)
void *vmm_getFreeChunk(unsigned int bytes)
{
HeapEntry *he = firstHeapEntry;
for (;;)
while (he)
{
if (he->attributes == VMM_HE_FREE)
{
@ -143,8 +150,6 @@ void *vmm_getFreeChunk(unsigned int bytes)
}
}
he = (HeapEntry *)he->link;
if (!he)
break;
}
return 0;
}
@ -161,7 +166,7 @@ void vmm_coalesceHeapEntry(HeapEntry *he)
return;
}
HeapEntry *hec = firstHeapEntry;
for (;;)
while (hec)
{
if (hec->attributes == he->attributes)
{
@ -178,8 +183,6 @@ void vmm_coalesceHeapEntry(HeapEntry *he)
}
}
hec = (HeapEntry *)hec->link;
if (!hec)
break;
}
}
@ -259,12 +262,9 @@ void vmm_addHeapEntryBlock()
HeapEntry *vmm_getLastHeapEntry()
{
HeapEntry *he = firstHeapEntry;
for (;;)
{
if (he->link == 0)
return he;
while (he)
he = (HeapEntry *)he->link;
}
return he;
}
@ -272,13 +272,11 @@ HeapEntry *vmm_getLastHeapEntry()
HeapEntry *vmm_getFirstHoleHeapEntry(unsigned int minBytes)
{
HeapEntry *he = firstHeapEntry;
for (;;)
while (he)
{
if ((he->attributes == VMM_HE_HOLE) && (he->size >= minBytes))
return he;
he = (HeapEntry *)he->link;
if (!he)
break;
}
return 0;
}
@ -288,13 +286,11 @@ HeapEntry *vmm_getFirstHoleHeapEntry(unsigned int minBytes)
HeapEntry *vmm_getFirstUnusedHeapEntry()
{
HeapEntry *he = firstHeapEntry;
for (;;)
while (he)
{
if (he->attributes == VMM_HE_UNUSED)
return he;
he = (HeapEntry *)he->link;
if (!he)
break;
}
return 0;
}
@ -305,13 +301,11 @@ unsigned int vmm_heapEntriesLeft()
{
HeapEntry *he = firstHeapEntry;
unsigned int entries = 0;
for (;;)
while (he)
{
if (he->attributes == VMM_HE_UNUSED)
entries++;
he = (HeapEntry *)he->link;
if (!he)
break;
}
return entries;
}
@ -333,13 +327,11 @@ int free(void *ptr)
HeapEntry *vmm_getHeapEntryByBase(unsigned int base)
{
HeapEntry *he = firstHeapEntry;
for (;;)
while (he)
{
if (he->base == base)
return he;
he = (HeapEntry *)he->link;
if (!he)
break;
}
return 0;
}

6
kernel/video/video.cpp
View File

@ -8,7 +8,7 @@
#include "mm/vmm.h"
ModeInfoBlock video_mode;
dword videoMode = 0; //what video mode # we are in, 0 for console mode
dword videoMode; //what video mode # we are in, 0 for console mode
word *vid_ptr16 = (word *)0xF0000000;
byte *vid_ptr24 = (byte *)0xF0000000;
dword *vid_ptr32 = (dword *)0xF0000000;
@ -36,13 +36,13 @@ void video_init()
video_psetp = &video_psetp32;
}
unsigned int vidPages = video_mode.XResolution * video_mode.YResolution * (video_mode.BitsPerPixel >> 3);
/* unsigned int vidPages = video_mode.XResolution * video_mode.YResolution * (video_mode.BitsPerPixel >> 3);
if (vidPages % 4096)
vidPages = (vidPages >> 12) + 1;
else
vidPages = (vidPages >> 12);
vmm_mapn(0xF0000000, video_mode.PhysBasePtr, vidPages);
*/
}
//Renders a character using stdfont[] as a bitmask