X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Kernel%2Flib.c;h=83965cc00a06ec7343e0f9e5226ac4f4ce39121e;hb=79be5827041844629dba4c8df7da81be91501f75;hp=2ce5c980a728c0990944932a75e3b0d3a52c3e59;hpb=3e11c7767641614fbb3fad38fffefa0da9e66919;p=tpg%2Facess2.git

diff --git a/Kernel/lib.c b/Kernel/lib.c
index 2ce5c980..83965cc0 100644
--- a/Kernel/lib.c
+++ b/Kernel/lib.c
@@ -14,12 +14,16 @@ const short DAYS_BEFORE[] = {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 3
 #define UNIX_TO_2K	((30*365*3600*24) + (7*3600*24))	//Normal years + leap years
 
 // === PROTOTYPES ===
+#if 0
  int	atoi(const char *string);
-void	itoa(char *buf, Uint num, int base, int minLength, char pad);
+void	itoa(char *buf, Uint64 num, int base, int minLength, char pad);
  int	vsnprintf(char *__s, size_t __maxlen, const char *__format, va_list args);
  int	sprintf(char *__s, const char *__format, ...);
+#endif
  int	tolower(int c);
+#if 0
  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 +31,23 @@ 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);
+#endif
 
 // === EXPORTS ===
 EXPORT(atoi);
@@ -47,14 +56,18 @@ EXPORT(vsnprintf);
 EXPORT(sprintf);
 EXPORT(tolower);
 EXPORT(strucmp);
+EXPORT(strchr);
 EXPORT(strpos);
 EXPORT(ByteSum);
 EXPORT(strlen);
 EXPORT(strcpy);
 EXPORT(strncpy);
+EXPORT(strcat);
+EXPORT(strncat);
 EXPORT(strcmp);
 EXPORT(strncmp);
-EXPORT(strdup);
+//EXPORT(strdup);
+EXPORT(_strdup);	// Takes File/Line too
 EXPORT(str_split);
 EXPORT(strpos8);
 EXPORT(DivUp);
@@ -65,6 +78,9 @@ EXPORT(CheckString);
 EXPORT(CheckMem);
 EXPORT(ModUtil_LookupString);
 EXPORT(ModUtil_SetIdent);
+EXPORT(UnHex);
+EXPORT(SwapEndian16);
+EXPORT(SwapEndian32);
 
 // === CODE ===
 /**
@@ -136,12 +152,12 @@ int atoi(const char *string)
 
 static const char cUCDIGITS[] = "0123456789ABCDEF";
 /**
- * \fn void itoa(char *buf, Uint num, int base, int minLength, char pad)
+ * \fn void itoa(char *buf, Uint64 num, int base, int minLength, char pad)
  * \brief Convert an integer into a character string
  */
-void itoa(char *buf, Uint num, int base, int minLength, char pad)
+void itoa(char *buf, Uint64 num, int base, int minLength, char pad)
 {
-	char	tmpBuf[BITS];
+	char	tmpBuf[64+1];
 	 int	pos=0, i;
 
 	// Sanity check
@@ -177,15 +193,19 @@ 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 = ' ';
-	 int	minSize = 0, len;
+	 int	minSize = 0, precision = -1, len;
 	char	tmpBuf[34];	// For Integers
-	char	*p = NULL;
+	const char	*p = NULL;
 	 int	isLongLong = 0;
 	Uint64	val;
 	size_t	pos = 0;
@@ -209,16 +229,13 @@ int vsnprintf(char *__s, size_t __maxlen, const char *__format, va_list args)
 		if(c == 'p') {
 			Uint	ptr = va_arg(args, Uint);
 			PUTCH('*');	PUTCH('0');	PUTCH('x');
+			itoa(tmpBuf, ptr, 16, BITS/4, '0');
 			p = tmpBuf;
-			itoa(p, ptr, 16, BITS/4, '0');
 			goto printString;
 		}
 		
-		// Get Argument
-		val = va_arg(args, Uint);
-		
 		// - Padding Side Flag
-		if(c == '+') {
+		if(c == '-') {
 			bPadLeft = 1;
 			c = *__format++;
 		}
@@ -233,8 +250,7 @@ int vsnprintf(char *__s, size_t __maxlen, const char *__format, va_list args)
 		
 		// - Minimum length
 		if(c == '*') {	// Dynamic length
-			minSize = val;
-			val = va_arg(args, Uint);
+			minSize = va_arg(args, unsigned int);
 			c = *__format++;
 		}
 		else if('1' <= c && c <= '9')
@@ -248,7 +264,28 @@ int vsnprintf(char *__s, size_t __maxlen, const char *__format, va_list args)
 			}
 		}
 		else
-			minSize = 1;
+			minSize = 0;
+		
+		// - Precision
+		precision = -1;
+		if( c == '.' ) {
+			c = *__format++;
+			
+			if(c == '*') {	// Dynamic length
+				precision = va_arg(args, unsigned int);
+				c = *__format++;
+			}
+			else if('1' <= c && c <= '9')
+			{
+				precision = 0;
+				while('0' <= c && c <= '9')
+				{
+					precision *= 10;
+					precision += c - '0';
+					c = *__format++;
+				}
+			}
+		}
 		
 		// - Default, Long or LongLong?
 		isLongLong = 0;
@@ -256,9 +293,6 @@ 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;
 			}
@@ -270,6 +304,7 @@ int vsnprintf(char *__s, size_t __maxlen, const char *__format, va_list args)
 		{
 		case 'd':
 		case 'i':
+			GETVAL();
 			if( isLongLong && val >> 63 ) {
 				PUTCH('-');
 				val = -val;
@@ -278,39 +313,60 @@ int vsnprintf(char *__s, size_t __maxlen, const char *__format, va_list args)
 				PUTCH('-');
 				val = -(Sint32)val;
 			}
-			itoa(p, val, 10, minSize, pad);
+			itoa(tmpBuf, val, 10, minSize, pad);
+			goto printString;
+		case 'u':	// Unsigned
+			GETVAL();
+			itoa(tmpBuf, val, 10, minSize, pad);
+			goto printString;
+		case 'P':	// Physical Address
+			PUTCH('0');
+			PUTCH('x');
+			if(sizeof(tPAddr) > 4)	isLongLong = 1;
+			GETVAL();
+			itoa(tmpBuf, val, 16, minSize, pad);
 			goto printString;
-		case 'u':
-			itoa(p, val, 10, minSize, pad);
+		case 'X':	// Hex
+			if(BITS == 64)
+				isLongLong = 1;	// TODO: Handle non-x86 64-bit archs
+			GETVAL();
+			itoa(tmpBuf, val, 16, minSize, pad);
 			goto printString;
-		case 'x':
-			itoa(p, val, 16, minSize, pad);
+			
+		case 'x':	// Lower case hex
+			GETVAL();
+			itoa(tmpBuf, val, 16, minSize, pad);
 			goto printString;
-		case 'o':
-			itoa(p, val, 8, minSize, pad);
+		case 'o':	// Octal
+			GETVAL();
+			itoa(tmpBuf, val, 8, minSize, pad);
 			goto printString;
 		case 'b':
-			itoa(p, val, 2, minSize, pad);
+			GETVAL();
+			itoa(tmpBuf, 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*)(tVAddr)val;
+			p = va_arg(args, char*);	// Get Argument
+			if( !CheckString(p) )	p = "(inval)";	// Avoid #PFs  
 		printString:
 			if(!p)		p = "(null)";
 			len = strlen(p);
 			if( !bPadLeft )	while(len++ < minSize)	PUTCH(pad);
-			while(*p)	PUTCH(*p++);
+			while(*p && precision--)	PUTCH(*p++);
 			if( bPadLeft )	while(len++ < minSize)	PUTCH(pad);
 			break;
 		
 		case 'C':	// Non-Null Terminated Character Array
-			p = (char*)(tVAddr)val;
+			p = va_arg(args, char*);
+			if( !CheckMem(p, minSize) )	continue;	// No #PFs please
 			if(!p)	goto printString;
 			while(minSize--)	PUTCH(*p++);
 			break;
@@ -318,6 +374,7 @@ int vsnprintf(char *__s, size_t __maxlen, const char *__format, va_list args)
 		// Single Character
 		case 'c':
 		default:
+			GETVAL();
 			PUTCH( (Uint8)val );
 			break;
 		}
@@ -366,6 +423,18 @@ 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
@@ -384,26 +453,26 @@ int strpos(const char *Str, char Ch)
  * \fn Uint8 ByteSum(void *Ptr, int Size)
  * \brief Adds the bytes in a memory region and returns the sum
  */
-Uint8 ByteSum(void *Ptr, int Size)
+Uint8 ByteSum(const void *Ptr, int Size)
 {
 	Uint8	sum = 0;
-	while(Size--)	sum += *(Uint8*)Ptr++;
+	const Uint8	*data = Ptr;
+	while(Size--)	sum += *(data++);
 	return sum;
 }
 
 /**
- * \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;
 }
 
 /**
- * \fn char *strcpy(char *__str1, const char *__str2)
  * \brief Copy a string to a new location
  */
 char *strcpy(char *__str1, const char *__str2)
@@ -415,8 +484,8 @@ char *strcpy(char *__str1, const char *__str2)
 }
 
 /**
- * \fn char *strncpy(char *__str1, const char *__str2, size_t max)
  * \brief Copy a string to a new location
+ * \note Copies at most `max` chars
  */
 char *strncpy(char *__str1, const char *__str2, size_t max)
 {
@@ -427,6 +496,32 @@ char *strncpy(char *__str1, const char *__str2, size_t max)
 	return __str1;
 }
 
+/**
+ * \brief Append a string to another
+ */
+char *strcat(char *__dest, const char *__src)
+{
+	while(*__dest++);
+	__dest--;
+	while(*__src)
+		*__dest++ = *__src++;
+	*__dest = '\0';
+	return __dest;
+}
+
+/**
+ * \brief Append at most \a n chars to a string from another
+ * \note At most n+1 chars are written (the dest is always zero terminated)
+ */
+char *strncat(char *__dest, const char *__src, size_t n)
+{
+	while(*__dest++);
+	while(*__src && n-- >= 1)
+		*__dest++ = *__src++;
+	*__dest = '\0';
+	return __dest;
+}
+
 /**
  * \fn int strcmp(const char *str1, const char *str2)
  * \brief Compare two strings return the difference between
@@ -451,6 +546,7 @@ 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
@@ -459,9 +555,25 @@ 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
@@ -542,7 +654,7 @@ int strpos8(const char *str, Uint32 Search)
  * \fn int ReadUTF8(Uint8 *str, Uint32 *Val)
  * \brief Read a UTF-8 character from a string
  */
-int ReadUTF8(Uint8 *str, Uint32 *Val)
+int ReadUTF8(const Uint8 *str, Uint32 *Val)
 {
 	*Val = 0xFFFD;	// Assume invalid character
 	
@@ -670,11 +782,10 @@ 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)
 {
 	#if 0
 	static Uint	state = RANDOM_SEED;
@@ -706,7 +817,7 @@ Uint rand(void)
 /**
  * \brief Checks if a string resides fully in valid memory
  */
-int CheckString(char *String)
+int CheckString(const char *String)
 {
 	if( !MM_GetPhysAddr( (tVAddr)String ) )
 		return 0;
@@ -742,7 +853,7 @@ int CheckString(char *String)
 /**
  * \brief Check if a sized memory region is valid memory
  */
-int CheckMem(void *Mem, int NumBytes)
+int CheckMem(const void *Mem, int NumBytes)
 {
 	tVAddr	addr = (tVAddr)Mem;
 	
@@ -776,7 +887,7 @@ int CheckMem(void *Mem, int NumBytes)
  * \brief Search a string array for \a Needle
  * \note Helper function for eTplDrv_IOCtl::DRV_IOCTL_LOOKUP
  */
-int ModUtil_LookupString(char **Array, char *Needle)
+int ModUtil_LookupString(const char **Array, const char *Needle)
 {
 	 int	i;
 	if( !CheckString(Needle) )	return -1;
@@ -787,9 +898,52 @@ int ModUtil_LookupString(char **Array, char *Needle)
 	return -1;
 }
 
-int ModUtil_SetIdent(char *Dest, char *Value)
+int ModUtil_SetIdent(char *Dest, const char *Value)
 {
 	if( !CheckMem(Dest, 32) )	return -1;
 	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;
+}
+
+Uint16 SwapEndian16(Uint16 Val)
+{
+	return ((Val&0xFF)<<8) | ((Val>>8)&0xFF);
+}
+Uint32 SwapEndian32(Uint32 Val)
+{
+	return ((Val&0xFF)<<24) | ((Val&0xFF00)<<8) | ((Val>>8)&0xFF00) | ((Val>>24)&0xFF);
+}