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CRT library stuff

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This commit is contained in:
Julian Barathieu 2019-01-19 22:36:38 +01:00
parent 2bf7929ce2
commit 98c2dd8502
15 changed files with 245 additions and 113 deletions
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1
boot/mbr/mbr.asm
View File

@ -123,6 +123,7 @@ load_root:
mov di, BUFFER_OFF ; Set es:di to the disk buffer
mov cx, word [rootDirEntries] ; Search through all of the root dir entries
xor ax, ax ; Clear ax for the file entry offset
search_root:
xchg cx, dx ; Save cx because it's a loop counter
mov si, filename ; Load the filename

2
boot/mbr/mbr.inc
View File

@ -101,7 +101,7 @@ read_sectors:
shl ah, 1
or cl, ah ; Now cx is set with respective track and sector numbers
mov dl, byte [Bootdrv] ; Set correct Bootdrv for int 13h
mov di, 21 ; Try five times to read the sector because i love 21
mov di, 21 ; Try five times to read the sector because I love 21
.attempt_read:
mov ax, 0x0201 ; Read Sectors func of int 13h, read one sector
int 0x13 ; Call int 13h (BIOS disk I/O)

64
kaleid/common/itoa.c
View File

@ -10,59 +10,89 @@
#include <kaleid.h>
//
// Digits table for bases <=36
// Digits table for bases <=36 (unused)
//
static const char digits[] =
"0123456789abcdefghijklmnopqrstuvwxyz";
//
// Integer to string in any base between 2 and 36 (included)
//
#if defined(_NEED_ITOA)
char *itoa(int i, char *str, int base)
#define _IL_MIN INT_MIN
#define _IL_MIN_STRING "-2147483648"
#elif defined(_NEED_LTOA)
char *ltoa(long i, char *str, int base)
#define _IL_MIN LONG_MIN
#define _IL_MIN_STRING "-9223372036854775808"
#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;
#if defined(_NEED_ITOA) || defined(_NEED_LTOA)
//
// Deal with negatives
//
if (i < 0) {
int neg = 0;
if (i < 0 && base == 10) {
//
// Handle INT_MIN and LONG_MIN...
//
if (__builtin_expect(i == _IL_MIN, 0)) {
strcpy(orig, _IL_MIN_STRING);
goto leave;
}
else {
neg = 1;
i = -i;
}
}
#endif
//
// Only handle base 2 -> 36
//
if (base < 2 || base > 36) {
__set_errno(EINVAL);
*orig = '\0;
goto leave;
}
//
// Deal with zero separately
//
if (i == 0) {
*str++ = '0';
*str = '\0';
goto leave;
}
//
// Compute digits... in reverse order
//
while (i > 0) {
*str++ = digits[i % base];
rem = i % base;
*str++ = (rem > 9)
? (rem - 10) + 'a'
: rem + '0';
i /= base;
}
@ -75,7 +105,13 @@ char *ultoa(ulong i, char *str, int base)
//
// Reverse the string
//
return strrev2(orig);
orig = strrev2(orig);
//
// End of conversion
//
leave:
return orig;
}

64
kaleid/common/string.c
View File

@ -235,7 +235,7 @@ char *strncpy(char *restrict dest, const char *restrict src, size_t n)
// 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)
int strnzcpy(char *restrict dest, const char *restrict src, size_t n)
{
size_t it;
@ -243,9 +243,7 @@ int xstrncpy(char *restrict dest, const char *restrict src, size_t n)
dest[it] = src[it];
}
//
// Was the copy complete?
//
if (it == n) {
if (dest[n] == 0) {
return TRUE;
@ -261,11 +259,63 @@ int xstrncpy(char *restrict dest, const char *restrict src, size_t n)
}
//
// XXX strcat family
// Appends a copy of src at the end of dest
//
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 *strcat(char *restrict dest, const char *restrict src)
{
char *base = dest;
while (*dest) dest++;
while ((*dest++ = *src++));
return base;
}
//
// Appends a copy of at most n bytes of src at the end of dest
//
char *strncat(char *restrict dest, const char *restrict src, size_t n)
{
size_t it, off = 0;
while (dest[off]) off++;
for (it = 0; it < n && src[it]; it++) {
dest[it+off] = src[it];
}
while (it++ < n) dest[it+off] = 0;
return dest;
}
//
// Appends a copy of at most n bytes of src at the end of dest
// Always null-terminates, and returne TRUE or FALSE depending on whether
// regular strcat() would have null-terminated this string, or not
//
int *strnzcat(char *restrict dest, const char *restrict src, size_t n)
{
size_t it, off = 0;
while (dest[off]) off++;
for (it = 0; it < n - 1 && src[it]; it++) {
dest[it+off] = src[it];
}
// Was the copy complete?
if (it == n) {
if (dest[n+off] == 0) {
return TRUE;
}
dest[n+off] = 0;
return FALSE;
}
while (it++ < n) dest[it+off] = 0;
return TRUE;
}
//
// Reverses the string src, putting the result into dest

4
kaleid/include/common/kalcrt.h
View File

@ -143,11 +143,11 @@ 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);
int strnzcpy(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);
int *strnzcat(char *restrict, const char *restrict, size_t);
char *strrev(char *restrict, const char *restrict);
char *strrev2(char *);

18
kaleid/include/common/kaldefs.h
View File

@ -23,11 +23,7 @@
#endif
#ifndef NULL
#define NULL ((void *)0)
#endif
#ifndef INITOK
#define INITOK ((unsigned int)0xCAFEBABE)
#define NULL 0L
#endif
//------------------------------------------//
@ -61,8 +57,8 @@
// Attributes and macros //
//------------------------------------------//
#ifndef PACKED
#define PACKED __attribute__((__packed__))
#ifndef _PACKED
#define _PACKED __attribute__((__packed__))
#endif
#ifndef noreturn
@ -77,6 +73,14 @@
#define unlikely(x) (__builtin_expect((x), 0))
#endif
#ifndef _STR
#define _STR(x) #x
#endif
#ifndef _XSTR
#define _XSTR(x) _STR(x)
#endif
//------------------------------------------//
// API specific macros //
//------------------------------------------//

2
kaleid/include/common/kalerror.h
View File

@ -11,7 +11,7 @@
#define _KALERROR_H
//------------------------------------------//
// Preprocessor constants //
// "errno" values //
//------------------------------------------//
// Everything went fine

2
kaleid/include/common/kallist.h
View File

@ -204,7 +204,7 @@ static inline ListHead_t
}
//
// Remove node of list
// Remove node of list (and frees it)
//
static inline ListHead_t
*RemoveNode(ListHead_t *head, ListNode_t *node)

4
kaleid/include/common/kalmask.h
View File

@ -51,11 +51,11 @@
#define strcpy _osk_strcpy
#define strncpy _osk_strncpy
#define xstrncpy _osk_xstrncpy
#define strnzcpy _osk_strnzcpy
#define strcat _osk_strcat
#define strncat _osk_strncat
#define xstrncat _osk_xstrncat
#define strnzcat _osk_strnzcat
#define strrev _osk_strrev
#define strrev2 _osk_strrev2

12
kaleid/include/kernel/kernbase.h
View File

@ -59,6 +59,11 @@ typedef enum {
// Multiprocessor misc. //
//------------------------------------------//
#ifndef INITOK
#define INITOK ((unsigned int)0xCAFEBABE)
#endif
#ifndef NCPU
#define NCPU 4
#endif
@ -108,12 +113,6 @@ DECLARE_PER_CPU(CurThread, Thread_t *);
// global constants //
//------------------------------------------//
#define SetPanicStr(str) \
do { \
SetKernState(KSTATE_PANIC); \
_SetPanicStr(str); \
} while (0)
#define SetKernState(x) \
do { \
_SetKernState(x); \
@ -184,7 +183,6 @@ void WriteByteOnPort(port_t port, port_t val)
static inline
uchar ReadByteFromPort(port_t port)
{
KalAssert(FALSE && ENOSYS);
(void)port;
return 0;

10
kaleid/include/kernel/kernlocks.h
View File

@ -70,11 +70,15 @@ typedef struct sLock_t {
//------------------------------------------//
//
// Linux syscall...
// Linux syscall vs unimplemented syscall...
//
#ifndef _KALEID_KERNEL
#ifdef _OSK_SOURCE
int KalYieldCPU(void),
#else
int sched_yield(void);
#endif
#endif
//
// Initialize a lock
@ -127,7 +131,11 @@ void AquireLock(Lock_t *lock)
StartPanic("AquireLock on an already locked object");
#else
if likely (lock->type == KLOCK_SPINLOCK) continue;
#ifdef _OSK_SOURCE
else KalYieldCPU();
#else
else sched_yield();
#endif
#endif
}
__sync_synchronize();

17
kaleid/include/kernel/kernsched.h
View File

@ -30,9 +30,10 @@
// Preprocessor //
//------------------------------------------//
//
// Debug stuff
//
#define printdbg printf
#define _STR(x) #x
#define _XSTR(x) _STR(x)
//
// States for a process
@ -56,6 +57,8 @@ DECLARE_PER_CPU(ReglPrioProcs, ListHead_t *);
DECLARE_PER_CPU(ServPrioProcs, ListHead_t *);
DECLARE_PER_CPU(TimeCritProcs, ListHead_t *);
extern const char *PrioClassesNames[];
//------------------------------------------//
// Data types //
//------------------------------------------//
@ -94,6 +97,16 @@ typedef struct sProcess_t{
} Process_t;
//------------------------------------------//
// Functions //
//------------------------------------------//
void SchedInit(void);
void SchedFini(void);
void SchedThisProc(Process_t *);
void SchedOnTick(void);
//------------------------------------------//
// End of header //
//------------------------------------------//

5
kaleid/kernel/ke/panic.c
View File

@ -34,6 +34,7 @@ noreturn void StartPanic(const char *str)
{
DisableIRQs();
// This should be made atomic
SetKernState(KSTATE_PANIC);
if (GetCurProc()) __CurProc[GetCurCPU()] = NULL;
@ -46,11 +47,11 @@ noreturn void StartPanic(const char *str)
}
if (GetPanicStr()) {
GetStdOut()->PrintOnTermUnlocked(GetStdOut(), "double panic!\n");
GetStdOut()->PrintOnTermUnlocked(GetStdOut(), "\nDouble panic!\n");
HaltCPU();
}
SetPanicStr(str);
_SetPanicStr(str);
GetStdOut()->PrintOnTermUnlocked(GetStdOut(), "PANIC! - ");
GetStdOut()->PrintOnTermUnlocked(GetStdOut(), str);

141
kaleid/kernel/proc/sched.c
View File

@ -66,12 +66,13 @@ void SchedUnlock(void) {
//
// 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[] = {
const char *PrioClassesNames[] = {
"Idle priority class",
"Regular priority class",
"Server priority class",
@ -203,28 +204,10 @@ void BlockCurProc(void)
SetCurProc(SelectSchedNext());
}
//
// Should we schedule another process?
// Called at each tick
//
void SchedOnTick(void)
static inline
void ReSchedCurProc(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) {
KalAssert(GetCurProc() && GetCurProc()->procState == STATE_RUNNING);
// Restore default attributes, cancelling boosts
GetCurProc()->prioClass = GetCurProc()->defPrioClass;
@ -234,16 +217,42 @@ void SchedOnTick(void)
// Remove from list
RemoveNode(GetCurProc()->schedNode->head, GetCurProc()->schedNode);
GetCurProc()->schedNode = NULL;
// Schedule again, with default attributes now
SchedThisProcUnlocked(GetCurProc());
// Mark as idle
SetCurProc(NULL);
}
//
// Otherwise, make him lose a tick
// Should we schedule another process?
// Called at each tick
//
void SchedOnTick(void)
{
SchedLock();
Process_t *procNext, *winner, *previous = GetCurProc();
//
// We're either idle or running something
//
KalAssert(GetCurProc() == NULL || GetCurProc()->procState == STATE_RUNNING);
//
// Have the current process spent its timeslice?
// (To be handled in CPU decisions function)
//
if (GetCurProc() != NULL) {
if (GetCurProc()->timeSlice <= 1) {
// Re-schedule
ReSchedCurProc();
// See next 'if' statement
_SetCurProc(NULL);
}
//
// Otherwise, make it lose a tick
//
else {
GetCurProc()->timeSlice--;
@ -268,8 +277,10 @@ void SchedOnTick(void)
// Yes, procNext should preempt current process
//
if (winner == procNext) {
GetCurProc()->procState = STATE_RUNNABLE;
SchedThisProcUnlocked(GetCurProc());
// Re-schedule
ReSchedCurProc();
// Switch to procNext
SetCurProc(procNext);
}
@ -278,32 +289,10 @@ void SchedOnTick(void)
//
leave:
SchedUnlock();
if (GetCurProc() != NULL && GetCurProc() != previous) {
// XXX context switch
}
#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("");
}
//
@ -355,6 +344,33 @@ void FiniSched(void)
}
#ifndef _KALEID_KERNEL
#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("");
}
int main(void)
{
InitSched();
@ -379,7 +395,17 @@ int main(void)
int tick = 0;
while (tick < 20) {
while (tick < 120) {
if (tick > 0 && tick != 50 && tick % 10 == 0) {
puts("Blocking current process");
BlockCurProc();
}
if (tick == 50) {
procs[2].procState = STATE_RUNNABLE;
SchedThisProc(&procs[2]);
}
printf("Tick %d - Running: ", tick);
if (GetCurProc() == NULL) {
@ -390,14 +416,8 @@ int main(void)
PrintProc(GetCurProc());
}
if (tick == 9 || tick == 14) {
puts("Blocking current process");
BlockCurProc();
}
SchedOnTick();
//puts("\n---------------");
tick++;
}
@ -405,5 +425,6 @@ int main(void)
return 0;
}
#endif