X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Kernel%2Flib.c;h=bc32a0ce8bf60a8b55e8ee5b00aea43526672304;hb=4e949acb1c98bc071af2d5d9038b4a3e703bf33d;hp=116dce6150a6db8b1302ce69b782207c148c0fa5;hpb=b98fbd4e9c71447d81fc9bd643fb174c76346e0f;p=tpg%2Facess2.git

diff --git a/Kernel/lib.c b/Kernel/lib.c
index 116dce61..bc32a0ce 100644
--- a/Kernel/lib.c
+++ b/Kernel/lib.c
@@ -8,7 +8,7 @@
 #define	RANDOM_SEED	0xACE55052
 #define	RANDOM_A	0x00731ADE
 #define	RANDOM_C	12345
-#define	RANDOM_SPRUCE	0xf12b02b
+#define	RANDOM_SPRUCE	0xf12b039
 //                          Jan Feb Mar Apr May  Jun  Jul  Aug  Sept Oct  Nov  Dec
 const short DAYS_BEFORE[] = {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334};
 #define UNIX_TO_2K	((30*365*3600*24) + (7*3600*24))	//Normal years + leap years
@@ -20,6 +20,7 @@ void	itoa(char *buf, Uint num, int base, int minLength, char pad);
  int	sprintf(char *__s, const char *__format, ...);
  int	tolower(int c);
  int	strucmp(const char *Str1, const char *Str2);
+char	*strchr(const char *__s, int __c);
  int	strpos(const char *Str, char Ch);
  Uint8	ByteSum(void *Ptr, int Size);
 size_t	strlen(const char *__s);
@@ -27,18 +28,23 @@ char	*strcpy(char *__str1, const char *__str2);
 char	*strncpy(char *__str1, const char *__str2, size_t max);
  int	strcmp(const char *str1, const char *str2);
  int	strncmp(const char *str1, const char *str2, size_t num);
-char	*strdup(const char *Str);
+char	*_strdup(const char *File, int Line, const char *Str);
 char	**str_split(const char *__str, char __ch);
  int	strpos8(const char *str, Uint32 Search);
  int	ReadUTF8(Uint8 *str, Uint32 *Val);
  int	WriteUTF8(Uint8 *str, Uint32 Val);
+
  int	DivUp(int num, int dem);
 Sint64	timestamp(int sec, int mins, int hrs, int day, int month, int year);
-Uint	rand(void);
+ int	rand(void);
+ 
  int	CheckString(char *String);
  int	CheckMem(void *Mem, int NumBytes);
+ 
  int	ModUtil_LookupString(char **Array, char *Needle);
  int	ModUtil_SetIdent(char *Dest, char *Value);
+ 
+ int	UnHex(Uint8 *Dest, size_t DestSize, const char *SourceString);
 
 // === EXPORTS ===
 EXPORT(atoi);
@@ -47,6 +53,7 @@ EXPORT(vsnprintf);
 EXPORT(sprintf);
 EXPORT(tolower);
 EXPORT(strucmp);
+EXPORT(strchr);
 EXPORT(strpos);
 EXPORT(ByteSum);
 EXPORT(strlen);
@@ -54,7 +61,8 @@ EXPORT(strcpy);
 EXPORT(strncpy);
 EXPORT(strcmp);
 EXPORT(strncmp);
-EXPORT(strdup);
+//EXPORT(strdup);
+EXPORT(_strdup);	// Takes File/Line too
 EXPORT(str_split);
 EXPORT(strpos8);
 EXPORT(DivUp);
@@ -65,9 +73,7 @@ EXPORT(CheckString);
 EXPORT(CheckMem);
 EXPORT(ModUtil_LookupString);
 EXPORT(ModUtil_SetIdent);
-
-// === GLOBALS ===
-static Uint	giRandomState = RANDOM_SEED;
+EXPORT(UnHex);
 
 // === CODE ===
 /**
@@ -180,6 +186,13 @@ void itoa(char *buf, Uint num, int base, int minLength, char pad)
 	if(pos==__maxlen){return pos;}\
 	if(__s){__s[pos++]=ch;}else{pos++;}\
 	}while(0)
+#define GETVAL()	do {\
+	if(isLongLong)	val = va_arg(args, Uint64);\
+	else	val = va_arg(args, unsigned int);\
+	}while(0)
+/**
+ * \brief VArg String Number Print Formatted
+ */
 int vsnprintf(char *__s, size_t __maxlen, const char *__format, va_list args)
 {
 	char	c, pad = ' ';
@@ -214,9 +227,6 @@ int vsnprintf(char *__s, size_t __maxlen, const char *__format, va_list args)
 			goto printString;
 		}
 		
-		// Get Argument
-		val = va_arg(args, Uint);
-		
 		// - Padding Side Flag
 		if(c == '+') {
 			bPadLeft = 1;
@@ -232,9 +242,8 @@ int vsnprintf(char *__s, size_t __maxlen, const char *__format, va_list args)
 			pad = ' ';
 		
 		// - Minimum length
-		if(c == '*') {
-			minSize = val;
-			val = va_arg(args, Uint);
+		if(c == '*') {	// Dynamic length
+			minSize = va_arg(args, unsigned int);
 			c = *__format++;
 		}
 		else if('1' <= c && c <= '9')
@@ -256,9 +265,6 @@ int vsnprintf(char *__s, size_t __maxlen, const char *__format, va_list args)
 		{
 			c = *__format++;
 			if(c == 'l') {
-				#if BITS == 32
-				val |= (Uint64)va_arg(args, Uint) << 32;
-				#endif
 				c = *__format++;
 				isLongLong = 1;
 			}
@@ -270,33 +276,51 @@ int vsnprintf(char *__s, size_t __maxlen, const char *__format, va_list args)
 		{
 		case 'd':
 		case 'i':
-			if( (isLongLong && val >> 63) || (!isLongLong && val >> 31) ) {
+			GETVAL();
+			if( isLongLong && val >> 63 ) {
 				PUTCH('-');
 				val = -val;
 			}
+			else if( !isLongLong && val >> 31 ) {
+				PUTCH('-');
+				val = -(Sint32)val;
+			}
 			itoa(p, val, 10, minSize, pad);
 			goto printString;
 		case 'u':
+			GETVAL();
 			itoa(p, val, 10, minSize, pad);
 			goto printString;
+		case 'X':
+			if(BITS == 64)
+				isLongLong = 1;	// TODO: Handle non-x86 64-bit archs
+			GETVAL();
+			itoa(p, val, 16, minSize, pad);
+			goto printString;
+			
 		case 'x':
+			GETVAL();
 			itoa(p, val, 16, minSize, pad);
 			goto printString;
 		case 'o':
+			GETVAL();
 			itoa(p, val, 8, minSize, pad);
 			goto printString;
 		case 'b':
+			GETVAL();
 			itoa(p, val, 2, minSize, pad);
 			goto printString;
 
 		case 'B':	//Boolean
+			val = va_arg(args, unsigned int);
 			if(val)	p = "True";
 			else	p = "False";
 			goto printString;
 		
 		// String - Null Terminated Array
 		case 's':
-			p = (char*)(Uint)val;
+			p = va_arg(args, char*);	// Get Argument
+			if( !CheckString(p) )	continue;	// Avoid #PFs  
 		printString:
 			if(!p)		p = "(null)";
 			len = strlen(p);
@@ -306,15 +330,16 @@ int vsnprintf(char *__s, size_t __maxlen, const char *__format, va_list args)
 			break;
 		
 		case 'C':	// Non-Null Terminated Character Array
-			p = (char*)(Uint)val;
+			p = va_arg(args, char*);
+			if( !CheckMem(p, minSize) )	continue;	// No #PFs please
 			if(!p)	goto printString;
-			//while(minSize--)	PUTCH(*p++);
 			while(minSize--)	PUTCH(*p++);
 			break;
 		
 		// Single Character
 		case 'c':
 		default:
+			GETVAL();
 			PUTCH( (Uint8)val );
 			break;
 		}
@@ -363,6 +388,18 @@ int strucmp(const char *Str1, const char *Str2)
 	return tolower(*Str1) - tolower(*Str2);
 }
 
+/**
+ * \brief Locate a byte in a string
+ */
+char *strchr(const char *__s, int __c)
+{
+	for( ; *__s; __s ++ )
+	{
+		if( *__s == __c )	return (char*)__s;
+	}
+	return NULL;
+}
+
 /**
  * \fn int strpos(const char *Str, char Ch)
  * \brief Search a string for an ascii character
@@ -389,12 +426,12 @@ Uint8 ByteSum(void *Ptr, int Size)
 }
 
 /**
- * \fn Uint strlen(const char *__str)
+ * \fn size_t strlen(const char *__str)
  * \brief Get the length of string
  */
-Uint strlen(const char *__str)
+size_t strlen(const char *__str)
 {
-	Uint	ret = 0;
+	size_t	ret = 0;
 	while(*__str++)	ret++;
 	return ret;
 }
@@ -448,6 +485,7 @@ int strncmp(const char *Str1, const char *Str2, size_t num)
 	return *Str1-*Str2;
 }
 
+#if 0
 /**
  * \fn char *strdup(const char *Str)
  * \brief Duplicates a string
@@ -456,9 +494,25 @@ char *strdup(const char *Str)
 {
 	char	*ret;
 	ret = malloc(strlen(Str)+1);
+	if( !ret )	return NULL;
+	strcpy(ret, Str);
+	return ret;
+}
+#else
+
+/**
+ * \fn char *_strdup(const char *File, int Line, const char *Str)
+ * \brief Duplicates a string
+ */
+char *_strdup(const char *File, int Line, const char *Str)
+{
+	char	*ret;
+	ret = Heap_Allocate(File, Line, strlen(Str)+1);
+	if( !ret )	return NULL;
 	strcpy(ret, Str);
 	return ret;
 }
+#endif
 
 /**
  * \brief Split a string using the passed character
@@ -659,7 +713,7 @@ Sint64 timestamp(int sec, int mins, int hrs, int day, int month, int year)
 		) && month > 1)	// Leap year and after feb
 		stamp += 3600*24;
 	
-	stamp += ((365*4+1) * ((year-2000)&~3)) * 3600*24;	// Foour Year Segments
+	stamp += ((365*4+1) * ((year-2000)&~3)) * 3600*24;	// Four Year Segments
 	stamp += ((year-2000)&3) * 365*3600*24;	// Inside four year segment
 	stamp += UNIX_TO_2K;
 	
@@ -667,27 +721,46 @@ Sint64 timestamp(int sec, int mins, int hrs, int day, int month, int year)
 }
 
 /**
- * \fn Uint rand()
+ * \fn int rand()
  * \brief Pseudo random number generator
- * \note Unknown effectiveness (made up on the spot)
  */
-Uint rand(void)
+int rand(void)
 {
-	Uint	old = giRandomState;
+	#if 0
+	static Uint	state = RANDOM_SEED;
+	Uint	old = state;
 	// Get the next state value
-	giRandomState = (RANDOM_A*giRandomState + RANDOM_C) & 0xFFFFFFFF;
+	giRandomState = (RANDOM_A*state + RANDOM_C);
 	// Check if it has changed, and if it hasn't, change it
-	if(giRandomState == old)	giRandomState += RANDOM_SPRUCE;
-	return giRandomState;
+	if(state == old)	state += RANDOM_SPRUCE;
+	return state;
+	#else
+	// http://en.wikipedia.org/wiki/Xorshift
+	// 2010-10-03
+	static Uint32	x = 123456789;
+	static Uint32	y = 362436069;
+	static Uint32	z = 521288629;
+	static Uint32	w = 88675123; 
+	Uint32	t;
+ 
+	t = x ^ (x << 11);
+	x = y; y = z; z = w;
+	return w = w ^ (w >> 19) ^ t ^ (t >> 8); 
+	#endif
 }
 
-/// \name Memory Validation
-/// \{
+/* *
+ * \name Memory Validation
+ * \{
+ */
 /**
  * \brief Checks if a string resides fully in valid memory
  */
 int CheckString(char *String)
 {
+	if( !MM_GetPhysAddr( (tVAddr)String ) )
+		return 0;
+	
 	// Check 1st page
 	if( MM_IsUser( (tVAddr)String ) )
 	{
@@ -745,7 +818,9 @@ int CheckMem(void *Mem, int NumBytes)
 	}
 	return 0;
 }
-/// \}
+/* *
+ * \}
+ */
 
 /**
  * \brief Search a string array for \a Needle
@@ -768,3 +843,37 @@ int ModUtil_SetIdent(char *Dest, char *Value)
 	strncpy(Dest, Value, 32);
 	return 1;
 }
+
+/**
+ * \brief Convert a string of hexadecimal digits into a byte stream
+ */
+int	UnHex(Uint8 *Dest, size_t DestSize, const char *SourceString)
+{
+	 int	i;
+	
+	for( i = 0; i < DestSize*2; i += 2 )
+	{
+		Uint8	val = 0;
+		
+		if(SourceString[i] == '\0')	break;
+		
+		if('0' <= SourceString[i] && SourceString[i] <= '9')
+			val |= (SourceString[i]-'0') << 4;
+		else if('A' <= SourceString[i] && SourceString[i] <= 'F')
+			val |= (SourceString[i]-'A'+10) << 4;
+		else if('a' <= SourceString[i] && SourceString[i] <= 'f')
+			val |= (SourceString[i]-'a'+10) << 4;
+			
+		if(SourceString[i+1] == '\0')	break;
+		
+		if('0' <= SourceString[i+1] && SourceString[i+1] <= '9')
+			val |= (SourceString[i+1] - '0');
+		else if('A' <= SourceString[i+1] && SourceString[i+1] <= 'F')
+			val |= (SourceString[i+1] - 'A' + 10);
+		else if('a' <= SourceString[i+1] && SourceString[i+1] <= 'f')
+			val |= (SourceString[i+1] - 'a' + 10);
+		
+		Dest[i/2] = val;
+	}
+	return i/2;
+}