kernel.c,v

一个小型的操作系统,采用gcc进行开发,几千行的代码,方便初学者学习

	}
	printf("%s %c(%d)", taskName, keyAscii, keyScan);
a637 1

d640 6
a645 4

    static int cnt2 = 0;
    static long a, temp;
    static int i;
d648 2
a649 2
	cnt2++;
	a = temp = cnt2;
d652 4
a655 3
	    *((char *) (0xb8000 + 124 + i * 2)) =
		(char) a = (a >= 10) ? a + 0x37 : a + 0x30;
	    *((char *) (0xb8000 + 124 + i * 2 + 1)) = 0x20;
d658 2
a659 1
	// printf("B");
a662 2
	//      cmosDelay(2);
	//	keyDeal(3, "task2");
d670 1
d679 8
a686 1
	memcpy((char *) 0xb8000, scrtime, strlen(scrtime));
d707 1
a707 1
	cmosDelay(1);
a711 1

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a722 2
void newTask(unsigned int taskEntrance,
	     unsigned int stackAddr, char *taskname, int id, int console)
d724 1
a724 1

a725 1
    //asm("cli");
d727 1
d731 1
a731 1
    taskP->flag = 0x200;	// interrupt enabled
d734 3
a736 11
    taskP->sp = stackAddr;
    taskP->bp = stackAddr;
    taskP->pid = id;
    taskP->console = console;
    if (console == 1) {
	holdConsole = taskP->pid;
	keyBuf = (taskP->keyBufs);
	keyHead = &(taskP->keyHeads);
	keyTail = &(taskP->keyTails);

    }
a741 2

    //asm("sti");
d744 2
a745 2
void initTask()			//init a dummy task structure
{
d748 1
a748 1
    task->ip = (unsigned int) 0x00;	// any integer
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a750 1
    task->state = 0;		// may not set task0's state RUNNABLE!!  
d752 2
a753 2
    task->sp = (unsigned int) 0;	// dummy spaceholder
    task->bp = (unsigned int) 0;	// dummy spaceholder    
a760 3
	extern char *keyBuf;
	extern int *keyHead;
	extern int *keyTail;
d784 1
a784 10
    /*
    //console switch
    if (curTask->pid == holdConsole &&  keyBuf != (curTask->keyBufs)) {

	keyBuf = (curTask->keyBufs);
	keyHead = &(curTask->keyHeads);
	keyTail = &(curTask->keyTails);
	//holdConsole = curTask->pid;
    }
    */
d808 1
a808 1
// return PIT tickcount
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a811 1
    return tickcount ;
d822 1
a822 1
// insert sorting
d830 1
a830 1
    // produce random data whose value <100
d834 1
a834 1
	printf("%d ", buf[i]);
d847 2
a848 2
	    printf("%s%d%s ", k == 0 ? "(" : "",
		   buf[k], k == 0 ? ")" : "");
d853 1
a853 1
	printf("%d ", buf[i]);
d859 1
a859 1
// binary insert sorting, a improvement of the above insort()
d862 1
a862 1
    char buf[SIZE];
d864 2
a866 1
    buf[0] = 0;
d868 1
a868 1
    // produce random data which value <100
d872 1
a872 1
	printf("%d ", buf[i]);
d893 1
a893 1
	    printf("[%d] ", pos);
d902 2
a903 2
	    printf("%s%d%s ", k == 0 ? "(" : "",
		   buf[k], k == 0 ? ")" : "");
d908 1
a908 1
	printf("%d ", buf[i]);
d910 1
d936 1
a936 1
#define WHITE_TXT 0x07		// white on black text
a942 1
    //static unsigned int vidmem = 0xb8000;
d949 1
a949 1
	    vidmem[i] = '>';	//chs;
d951 1
a951 1
	    delay2(0x4fffff);	//             delay();
d954 1
a954 2
	} else if (i >= 160 * (row - 1)
		   && lr == BACKWARD) {
d958 1
a958 1
	    vidmem[i] = '<';	//chs;
d960 1
a960 1
	    delay2(0x4fffff);	//     delay();
a970 1
extern void shreg();
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a1012 1
    __asm__("hlt\n""iret\n");
d1015 1
a1015 1
// Exceptions
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a1021 1
// IRQs
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a1027 1
/*
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#define csHigh 0x00		// code selector MSB
#define csLow  0x08		// code selector LSB
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void doInitInts()		// do init interrupts, be called in initInterrupts()
{
    char *idtAddr = (char *) 0x1000;	// IDT offset in GDT, GDT=0000h
d1059 1
a1059 1
    // Exception & IRQ handler initialization for Intel X86 CPU 
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a1062 1
	    pos = 0x20;		// IRQ0~IRQ7 
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a1065 1
	    pos = 0x30;		// IRQ8~IRQ15 
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a1068 1
	tmp = tmp & 0x0000ff;	// eip b0~b7
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a1072 1
	tmp = (tmp >> 8) & 0x0000ff;	// eip b8~b15
d1075 4
a1078 4
	*(idtAddr + pos * 8 + 2) = csLow;	//cs =0x08
	*(idtAddr + pos * 8 + 3) = csHigh;	//cs =0x08
	*(idtAddr + pos * 8 + 4) = 0;	// always reserved as 0
	*(idtAddr + pos * 8 + 5) = 0x8e;	// signature 0x8E
d1081 1
a1081 1
	tmp = (tmp >> 16) & 0xff;	// eip b16~b23
d1085 1
a1085 1
	tmp = (tmp >> 24) & 0xff;	// eip b24~b31
d1097 2
d1106 3
a1108 1
    } while ((temp & 0x02) != 0);	/* flush the keyboard controller */
@


1.6
log
@revise the segment of keyboard handling procedure in ktask in accordance with the change of keyboard interrupt handler in int.asm
@
text
@d11 3
a13 3
  $Id: kernel.c,v 1.5 2004/02/14 10:39:34 oracle Exp oracle $
  built   : $Date: 2004/02/14 10:39:34 $
  $Revision: 1.5 $
d21 4
d36 1
a36 1
static char rcsDate[] = "Built: $Date: 2004/02/14 10:39:34 $";
d56 3
a58 3
extern unsigned int keyTail;
extern unsigned int keyHead;
extern unsigned int keyBuf;
d78 5
d157 1
a157 1
	     char *taskname, int id);
d172 2
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d198 4
a201 4
    newTask((unsigned) &task1, task1Stackbottom, "task1", 1);
    newTask((unsigned) &task2, task2Stackbottom, "task2", 2);
    newTask((unsigned) &ktask, task3Stackbottom, "ktask", 8);
    newTask((unsigned) &banner, task4Stackbottom, "banner", 4);
d203 1
a203 1
	    5);
d205 1
a205 1
	    6);
d275 1
a275 1
	while (keyHead % 254 != keyTail) {
d278 5
a282 2
	    keyAscii = *((char *) (&keyBuf) + keyHead + 1);
	    keyScan = *((char *) (&keyBuf) + keyHead + 0);
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a286 1
	    keyHead = (keyHead + 2) % 254;
d303 1
a307 1

a364 1

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a370 1
				    && p->pid < 8) {
d575 16
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a617 4
//      while (i < 0X2FFFFF) {
//          i++;
//      }
	cmosDelay(2);
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a670 1
	     unsigned int stackAddr, char *taskname, int id)
d685 8
d719 3
d745 10
a754 1

d778 6
d800 1
a800 1
    // produce random data which value <100
d983 1
d1079 1
a1079 1
    /* ...and if that didn't work, just hang */
@


1.5
log
@add reboot command and function reboot(), useful to reboot computer
@
text
@d11 3
a13 3
  $Id: kernel.c,v 1.4 2004/02/01 12:14:40 oracle Exp oracle $
  built   : $Date: 2004/02/01 12:14:40 $
  $Revision: 1.4 $
d28 3
d32 1
a32 1
static char rcsDate[] = "Built: $Date: 2004/02/01 12:14:40 $";
d48 1
a48 1
extern void setPITFreq(int hz);
d51 4
a54 5
/* keytail keyhead keybuf defined in int.asm for keybd interrupt */
extern unsigned int keytail;
extern unsigned int keyhead;
extern unsigned int keybuf;
extern unsigned int keystr;
d73 1
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d101 1
a101 1
#define MAXCMDS 4*6
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a164 1

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a176 1
    printf("type help for available commands\n\n%s", PROMPT);
d179 1
a179 1
    setPITFreq(50 * 1);
d189 9
a197 1

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d262 1
a262 1
	while ((keyhead + 2) % 254 != keytail) {
d264 7
a270 2
	    keyhead = (keyhead + 2) % 254;
	    if (*((char *) (&keybuf) + keyhead + 1) != 0x0a) {
d272 4
a275 4
		//printf("%c(%d)", *((char *) (&keybuf) + keyhead + 1), *((char *) (&keybuf) + keyhead + 0));
		printf("%c", *((char *) (&keybuf) + keyhead + 1));
		kb[(kp++) % KNLKEYBFLEN] =
		    *((char *) (&keybuf) + keyhead + 1);
d278 1
a278 3
		if (*((char *) (&keybuf) + keyhead + 0) == 69
		    || *((char *) (&keybuf) + keyhead + 0) == 58
		    || *((char *) (&keybuf) + keyhead + 0) == 70) {
d284 2
a285 1
	    if (*((char *) (&keybuf) + keyhead + 1) == 0x0a) {
d293 1
d448 7
d465 1
d578 50
a627 3
	while (i < 0X2FFFFF) {
	    i++;
	}
a657 2


d1012 1
a1012 1
    } while ((temp & 0x02) != 0); /* flush the keyboard controller */
d1014 1
a1014 1
    outb(0xFE, 0x64); /* pulse the CPU reset line */
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a1017 2
    /* ...and if that didn't work, just hang*/
    while (1) ;
@


1.4
log
@*** empty log message ***
@
text
@d11 3
a13 3
  $Id: kernel.c,v 1.3 2004/02/01 11:59:05 oracle Exp oracle $
  built   : $Date: 2004/02/01 11:59:05 $
  $Revision: 1.3 $
d26 2
d29 1
a29 1
static char rcsDate[]="Built: $Date: 2004/02/01 11:59:05 $" ;
a74 1

a77 9
/*
#define BUFLEN 10
char shared[BUFLEN];
int shidx = 0;
int hold = 1;
void putd();
void getd();
*/

d86 1
a86 1
    HANOI, MDP, DIR, WRFILE, RDFILE, TYPE, DEL, COPY, D0,
d119 2
d155 1
d172 1
a181 4
/*
    shidx = 0;
    hold = 1;
*/
a226 8
/*
    b1=malloc(-1);
    b1=realloc(b1,1);
    dump_heap();
 
    free(b1);
    dump_heap();
*/
d419 7
d443 2
a444 1
	("\nSnixos Project version 1.0, 2003.6\n(C) Copyright 2003-2004 Snallie Jockeyson <Snallie@@tom.com>    \nAll Rights Reserved.\nDistributed under the terms of the GNU General Public License.\n%s\n",rcsDate);
a641 22
/*void putd() */
/*{ */
/*    while (1) { */
/*      while (shidx < BUFLEN - 1 && hold == 1) { */
/*        shared[shidx++] = 'P'; */
/*        printf("P:%d ", shidx); */
/*      } */
/*      hold = 0; */
/*    } */
/*} */

/*void getd() */
/*{ */
/*    while (1) { */
/*      while (shidx > 0 && hold == 0) { */
/*        shared[--shidx] = 'C'; */
/*        printf("C:%d ", shidx); */
/*      } */
/*      hold = 1; */
/*    } */
/*} */

d771 1
a771 1
    static int i = 31 * 2;	
d781 1
a781 1
	    vidmem[i] = '>';//chs;
d791 1
a791 1
	    vidmem[i] = '<';//chs;
d878 2
a879 4
    &int0x0, &int0x1, &int0x2, &int0x3, &int0x4,
    &int0x5, &int0x6, &int0x7,
    &int0x8,
    &int0x9, &int0xA, &int0xB, &int0xC, &int0xD, &int0xE,	/* &int0xF, reserved */
d882 3
a884 6
    &int0x20, &int0x21, &int0x22, &int0x23,
    &int0x24, &int0x25, &int0x26,
    &int0x27,
    &int0x30, &int0x31, &int0x32, &int0x33,
    &int0x34, &int0x35, &int0x36,
    &int0x37
d923 20
@


1.3
log
@move rcsDate to the first line of copyright information
@
text
@d11 3
a13 3
  $Id: kernel.c,v 1.2 2004/02/01 11:53:47 oracle Exp oracle $
  built   : $Date: 2004/02/01 11:53:47 $
  $Revision$
d27 1
a27 1
static char rcsDate[]="Built: $Date: 2004/02/01 11:53:47 $" ;
d452 1
a452 1
	("\nSnixos Project version 1.0, 2003.6, %s\n(C) Copyright 2003-2004 Snallie Jockeyson <Snallie@@tom.com>    \nAll Rights Reserved.\nDistributed under the terms of the GNU General Public License.\n\n",rcsDate);
@


1.2
log
@add rcs keyword Date to ver()
@
text
@d11 3
a13 3
  $Id: kernel.c,v 1.1 2004/02/01 11:42:09 oracle Exp oracle $
  built   : $Date: 2004/02/01 11:42:09 $

d27 1
a27 1
static char rcsDate[]="Built: $Date$" ;
d452 1
a452 1
	("\nSnixos Project version 1.0, 2003.6\n(C) Copyright 2003-2004 Snallie Jockeyson <Snallie@@tom.com>    \n%s\nAll Rights Reserved.\nDistributed under the terms of the GNU General Public License.\n\n",rcsDate);
@


1.1
log
@Initial revision
@
text
@d11 2
a12 2
  $Id$
  built   : $Date$
d26 2
d452 1
a452 1
	("\nSnixos Project version 1.0, 2003.6\n(C) Copyright 2003-2004 Snallie Jockeyson <Snallie@@tom.com>    \nAll Rights Reserved.\nDistributed under the terms of the GNU General Public License.\n\n");
@