* Acess2
* Common Library Functions
*/
-#include <common.h>
+#include <acess.h>
// === CONSTANTS ===
#define RANDOM_SEED 0xACE55052
-#define RANDOM_A 0x12231ADE
-#define RANDOM_C 0x1BADBEEF
+#define RANDOM_A 0x00731ADE
+#define RANDOM_C 12345
+#define RANDOM_SPRUCE 0xf12b02b
// 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
// === PROTOTYPES ===
+ int atoi(const char *string);
+void itoa(char *buf, Uint 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, ...);
+ int tolower(int c);
+ int strucmp(const char *Str1, const char *Str2);
+ int strpos(const char *Str, char Ch);
+ Uint8 ByteSum(void *Ptr, int Size);
+size_t strlen(const char *__s);
+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 **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 CheckString(char *String);
+ int CheckMem(void *Mem, int NumBytes);
+ int ModUtil_LookupString(char **Array, char *Needle);
+ int ModUtil_SetIdent(char *Dest, char *Value);
+
+// === EXPORTS ===
+EXPORT(atoi);
+EXPORT(itoa);
+EXPORT(vsnprintf);
+EXPORT(sprintf);
+EXPORT(tolower);
+EXPORT(strucmp);
+EXPORT(strpos);
+EXPORT(ByteSum);
+EXPORT(strlen);
+EXPORT(strcpy);
+EXPORT(strncpy);
+EXPORT(strcmp);
+EXPORT(strncmp);
+EXPORT(strdup);
+EXPORT(str_split);
+EXPORT(strpos8);
+EXPORT(DivUp);
+EXPORT(ReadUTF8);
+EXPORT(WriteUTF8);
+EXPORT(timestamp);
+EXPORT(CheckString);
+EXPORT(CheckMem);
+EXPORT(ModUtil_LookupString);
+EXPORT(ModUtil_SetIdent);
+
+// === GLOBALS ===
+static Uint giRandomState = RANDOM_SEED;
// === CODE ===
+/**
+ * \brief Convert a string into an integer
+ */
+int atoi(const char *string)
+{
+ int ret = 0;
+ int bNeg = 0;
+
+ //Log("atoi: (string='%s')", string);
+
+ // Clear non-numeric characters
+ while( !('0' <= *string && *string <= '9') && *string != '-' ) string++;
+ if( *string == '-' ) {
+ bNeg = 1;
+ while( !('0' <= *string && *string <= '9') ) string++;
+ }
+
+ if(*string == '0')
+ {
+ string ++;
+ if(*string == 'x')
+ {
+ // Hex
+ string ++;
+ for( ;; string ++ )
+ {
+ if('0' <= *string && *string <= '9') {
+ ret *= 16;
+ ret += *string - '0';
+ }
+ else if('A' <= *string && *string <= 'F') {
+ ret *= 16;
+ ret += *string - 'A' + 10;
+ }
+ else if('a' <= *string && *string <= 'f') {
+ ret *= 16;
+ ret += *string - 'a' + 10;
+ }
+ else
+ break;
+ }
+ }
+ else // Octal
+ {
+ for( ; '0' <= *string && *string <= '7'; string ++ )
+ {
+ ret *= 8;
+ ret += *string - '0';
+ }
+ }
+ }
+ else // Decimal
+ {
+ for( ; '0' <= *string && *string <= '9'; string++)
+ {
+ ret *= 10;
+ ret += *string - '0';
+ }
+ }
+
+ if(bNeg) ret = -ret;
+
+ //Log("atoi: RETURN %i", ret);
+
+ return ret;
+}
+
static const char cUCDIGITS[] = "0123456789ABCDEF";
/**
- * \fn static void itoa(char *buf, Uint num, int base, int minLength, char pad)
+ * \fn void itoa(char *buf, Uint 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)
}
/**
- * \fn int tolower(int __c)
+ * \brief Append a character the the vsnprintf output
+ */
+#define PUTCH(c) do{\
+ char ch=(c);\
+ if(pos==__maxlen){return pos;}\
+ if(__s){__s[pos++]=ch;}else{pos++;}\
+ }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;
+ char tmpBuf[34]; // For Integers
+ char *p = NULL;
+ int isLongLong = 0;
+ Uint64 val;
+ size_t pos = 0;
+ // Flags
+ int bPadLeft = 0;
+
+ //Log("vsnprintf: (__s=%p, __maxlen=%i, __format='%s', ...)", __s, __maxlen, __format);
+
+ while((c = *__format++) != 0)
+ {
+ // Non control character
+ if(c != '%') { PUTCH(c); continue; }
+
+ c = *__format++;
+ //Log("pos = %i", pos);
+
+ // Literal %
+ if(c == '%') { PUTCH('%'); continue; }
+
+ // Pointer - Done first for debugging
+ if(c == 'p') {
+ Uint ptr = va_arg(args, Uint);
+ PUTCH('*'); PUTCH('0'); PUTCH('x');
+ p = tmpBuf;
+ itoa(p, ptr, 16, BITS/4, '0');
+ goto printString;
+ }
+
+ // Get Argument
+ val = va_arg(args, Uint);
+
+ // - Padding Side Flag
+ if(c == '+') {
+ bPadLeft = 1;
+ c = *__format++;
+ }
+
+ // - Padding
+ if(c == '0') {
+ pad = '0';
+ c = *__format++;
+ }
+ else
+ pad = ' ';
+
+ // - Minimum length
+ if(c == '*') { // Dynamic length
+ minSize = val;
+ val = va_arg(args, Uint);
+ c = *__format++;
+ }
+ else if('1' <= c && c <= '9')
+ {
+ minSize = 0;
+ while('0' <= c && c <= '9')
+ {
+ minSize *= 10;
+ minSize += c - '0';
+ c = *__format++;
+ }
+ }
+ else
+ minSize = 1;
+
+ // - Default, Long or LongLong?
+ isLongLong = 0;
+ if(c == 'l') // Long is actually the default on x86
+ {
+ c = *__format++;
+ if(c == 'l') {
+ #if BITS == 32
+ val |= (Uint64)va_arg(args, Uint) << 32;
+ #endif
+ c = *__format++;
+ isLongLong = 1;
+ }
+ }
+
+ // - Now get the format code
+ p = tmpBuf;
+ switch(c)
+ {
+ case 'd':
+ case 'i':
+ 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':
+ itoa(p, val, 10, minSize, pad);
+ goto printString;
+ case 'x':
+ itoa(p, val, 16, minSize, pad);
+ goto printString;
+ case 'o':
+ itoa(p, val, 8, minSize, pad);
+ goto printString;
+ case 'b':
+ itoa(p, val, 2, minSize, pad);
+ goto printString;
+
+ case 'B': //Boolean
+ if(val) p = "True";
+ else p = "False";
+ goto printString;
+
+ // String - Null Terminated Array
+ case 's':
+ p = (char*)(tVAddr)val;
+ printString:
+ if(!p) p = "(null)";
+ len = strlen(p);
+ if( !bPadLeft ) while(len++ < minSize) PUTCH(pad);
+ while(*p) PUTCH(*p++);
+ if( bPadLeft ) while(len++ < minSize) PUTCH(pad);
+ break;
+
+ case 'C': // Non-Null Terminated Character Array
+ p = (char*)(tVAddr)val;
+ if(!p) goto printString;
+ while(minSize--) PUTCH(*p++);
+ break;
+
+ // Single Character
+ case 'c':
+ default:
+ PUTCH( (Uint8)val );
+ break;
+ }
+ }
+
+ if(__s && pos != __maxlen)
+ __s[pos] = '\0';
+
+ return pos;
+}
+#undef PUTCH
+
+/**
+ */
+int sprintf(char *__s, const char *__format, ...)
+{
+ va_list args;
+ int ret;
+
+ va_start(args, __format);
+ ret = vsnprintf(__s, -1, __format, args);
+ va_end(args);
+
+ return ret;
+}
+
+/**
+ * \fn int tolower(int c)
* \brief Converts a character to lower case
*/
int tolower(int c)
}
/**
- * \fn int strucmp(char *Str1, char *Str2)
+ * \fn int strucmp(const char *Str1, const char *Str2)
* \brief Compare \a Str1 and \a Str2 case-insensitively
*/
-int strucmp(char *Str1, char *Str2)
+int strucmp(const char *Str1, const char *Str2)
{
while(*Str1 && tolower(*Str1) == tolower(*Str2))
Str1++, Str2++;
}
/**
- * \fn int strpos(char *Str, char Ch)
+ * \fn int strpos(const char *Str, char Ch)
* \brief Search a string for an ascii character
*/
-int strpos(char *Str, char Ch)
+int strpos(const char *Str, char Ch)
{
int pos;
for(pos=0;Str[pos];pos++)
}
/**
+ * \fn Uint8 ByteSum(void *Ptr, int Size)
+ * \brief Adds the bytes in a memory region and returns the sum
*/
-int ByteSum(void *Ptr, int Size)
+Uint8 ByteSum(void *Ptr, int Size)
{
- int sum = 0;
+ Uint8 sum = 0;
while(Size--) sum += *(Uint8*)Ptr++;
return sum;
}
/**
- * \fn Uint strlen(char *__str)
+ * \fn Uint strlen(const char *__str)
* \brief Get the length of string
*/
-Uint strlen(char *__str)
+Uint strlen(const char *__str)
{
Uint ret = 0;
while(*__str++) ret++;
}
/**
- * \fn char *strcpy(char *__str1, char *__str2)
+ * \fn char *strcpy(char *__str1, const char *__str2)
* \brief Copy a string to a new location
*/
-char *strcpy(char *__str1, char *__str2)
+char *strcpy(char *__str1, const char *__str2)
{
while(*__str2)
*__str1++ = *__str2++;
}
/**
- * \fn int strcmp(char *str1, char *str2)
+ * \fn char *strncpy(char *__str1, const char *__str2, size_t max)
+ * \brief Copy a string to a new location
+ */
+char *strncpy(char *__str1, const char *__str2, size_t max)
+{
+ while(*__str2 && max-- >= 1)
+ *__str1++ = *__str2++;
+ if(max)
+ *__str1 = '\0'; // Terminate String
+ return __str1;
+}
+
+/**
+ * \fn int strcmp(const char *str1, const char *str2)
* \brief Compare two strings return the difference between
* the first non-matching characters.
*/
-int strcmp(char *str1, char *str2)
+int strcmp(const char *str1, const char *str2)
{
while(*str1 && *str1 == *str2)
str1++, str2++;
}
/**
- * \fn int strncmp(char *Str1, char *Str2, size_t num)
+ * \fn int strncmp(const char *Str1, const char *Str2, size_t num)
* \brief Compare strings \a Str1 and \a Str2 to a maximum of \a num characters
*/
-int strncmp(char *Str1, char *Str2, size_t num)
+int strncmp(const char *Str1, const char *Str2, size_t num)
{
- while(num-- && *Str1 && *Str1 == *Str2)
+ if(num == 0) return 0; // TODO: Check what should officially happen here
+ while(--num && *Str1 && *Str1 == *Str2)
Str1++, Str2++;
return *Str1-*Str2;
}
/**
- * \fn int strpos8(char *str, Uint32 search)
+ * \fn char *strdup(const char *Str)
+ * \brief Duplicates a string
+ */
+char *strdup(const char *Str)
+{
+ char *ret;
+ ret = malloc(strlen(Str)+1);
+ strcpy(ret, Str);
+ return ret;
+}
+
+/**
+ * \brief Split a string using the passed character
+ * \return NULL terminated array of strings on the heap
+ * \param __str String to split
+ * \param __ch Character to split by
+ */
+char **str_split(const char *__str, char __ch)
+{
+ int i, j;
+ int len = 1;
+ char **ret;
+ char *start;
+
+ for( i = 0; __str[i]; i++ )
+ {
+ if(__str[i] == __ch)
+ len ++;
+ }
+
+ ret = malloc( sizeof(char*)*(len+1) + (i + 1) );
+ if( !ret ) return NULL;
+
+ j = 1;
+ start = (char *)&ret[len+1];
+ ret[0] = start;
+ for( i = 0; __str[i]; i++ )
+ {
+ if(__str[i] == __ch) {
+ *start++ = '\0';
+ ret[j++] = start;
+ }
+ else {
+ *start++ = __str[i];
+ }
+ }
+ *start = '\0';
+ ret[j] = NULL;
+
+ return ret;
+}
+
+/**
+ * \fn int DivUp(int num, int dem)
+ * \brief Divide two numbers, rounding up
+ * \param num Numerator
+ * \param dem Denominator
+ */
+int DivUp(int num, int dem)
+{
+ return (num+dem-1)/dem;
+}
+
+/**
+ * \fn int strpos8(const char *str, Uint32 search)
* \brief Search a string for a UTF-8 character
*/
-int strpos8(char *str, Uint32 Search)
+int strpos8(const char *str, Uint32 Search)
{
int pos;
Uint32 val = 0;
) && 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;
* \brief Pseudo random number generator
* \note Unknown effectiveness (made up on the spot)
*/
-Uint rand()
+Uint rand(void)
{
- #if 0
- static Uint randomState = RANDOM_SEED;
- Uint ret = randomState;
- int roll = randomState & 31;
- randomState = (randomState << roll) | (randomState >> (32-roll));
- randomState ^= 0x9A3C5E78;
- return ret;
- #else
- static Uint randomState = RANDOM_SEED;
- return randomState = (RANDOM_A*randomState + RANDOM_C) & 0xFFFFFFFF;
- #endif
+ Uint old = giRandomState;
+ // Get the next state value
+ giRandomState = (RANDOM_A*giRandomState + RANDOM_C) & 0xFFFFFFFF;
+ // Check if it has changed, and if it hasn't, change it
+ if(giRandomState == old) giRandomState += RANDOM_SPRUCE;
+ return giRandomState;
}
-EXPORT(timestamp);
-EXPORT(ReadUTF8);
+/* *
+ * \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 ) )
+ {
+ // Traverse String
+ while( *String )
+ {
+ if( !MM_IsUser( (tVAddr)String ) )
+ return 0;
+ // Increment string pointer
+ String ++;
+ }
+ return 1;
+ }
+ else if( MM_GetPhysAddr( (tVAddr)String ) )
+ {
+ // Traverse String
+ while( *String )
+ {
+ if( !MM_GetPhysAddr( (tVAddr)String ) )
+ return 0;
+ // Increment string pointer
+ String ++;
+ }
+ return 1;
+ }
+ return 0;
+}
+
+/**
+ * \brief Check if a sized memory region is valid memory
+ */
+int CheckMem(void *Mem, int NumBytes)
+{
+ tVAddr addr = (tVAddr)Mem;
+
+ if( MM_IsUser( addr ) )
+ {
+ while( NumBytes-- )
+ {
+ if( !MM_IsUser( addr ) )
+ return 0;
+ addr ++;
+ }
+ return 1;
+ }
+ else if( MM_GetPhysAddr( addr ) )
+ {
+ while( NumBytes-- )
+ {
+ if( !MM_GetPhysAddr( addr ) )
+ return 0;
+ addr ++;
+ }
+ return 1;
+ }
+ return 0;
+}
+/* *
+ * \}
+ */
+
+/**
+ * \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 i;
+ if( !CheckString(Needle) ) return -1;
+ for( i = 0; Array[i]; i++ )
+ {
+ if(strcmp(Array[i], Needle) == 0) return i;
+ }
+ return -1;
+}
+
+int ModUtil_SetIdent(char *Dest, char *Value)
+{
+ if( !CheckMem(Dest, 32) ) return -1;
+ strncpy(Dest, Value, 32);
+ return 1;
+}
git.ucc.asn.au / tpg / acess2.git / blobdiff
UCC git Repository :: git.ucc.asn.au