URL https://opencores.org/ocsvn/plasma/plasma/trunk

Subversion Repositories plasma

[/] [plasma/] [trunk/] [kernel/] [libc.c] - Blame information for rev 249

Go to most recent revision | Details | Compare with Previous | View Log


/*--------------------------------------------------------------------
 * TITLE: ANSI C Library
 * AUTHOR: Steve Rhoads (rhoadss@yahoo.com)
 * DATE CREATED: 12/17/05
 * FILENAME: libc.c
 * PROJECT: Plasma CPU core
 * COPYRIGHT: Software placed into the public domain by the author.
 *    Software 'as is' without warranty.  Author liable for nothing.
 * DESCRIPTION:
 *    Subset of the ANSI C library
 *--------------------------------------------------------------------*/
#define NO_ELLIPSIS
#include "rtos.h"
 
 
char *strcpy(char *dst, const char *src)
{
   int c;
   do
   {
      c = *dst++ = *src++;
   } while(c);
   return dst;
}
 
 
char *strncpy(char *dst, const char *src, int count)
{
   int c=1;
   while(count-- > 0 && c)
      c = *dst++ = *src++;
   *dst = 0;
   return dst;
}
 
 
char *strcat(char *dst, const char *src)
{
   int c;
   while(*dst)
      ++dst;
   do
   {
      c = *dst++ = *src++;
   } while(c);
   return dst;
}
 
 
char *strncat(char *dst, const char *src, int count)
{
   int c=1;
   while(*dst && --count > 0)
      ++dst;
   while(--count > 0 && c)
      c = *dst++ = *src++;
   *dst = 0;
   return dst;
}
 
 
int strcmp(const char *string1, const char *string2)
{
   int diff, c;
   for(;;)
   {
      diff = *string1++ - (c = *string2++);
      if(diff)
         return diff;
      if(c == 0)
         return 0;
   }
}
 
 
int strncmp(const char *string1, const char *string2, int count)
{
   int diff, c;
   while(count-- > 0)
   {
      diff = *string1++ - (c = *string2++);
      if(diff)
         return diff;
      if(c == 0)
         return 0;
   }
   return 0;
}
 
 
char *strstr(const char *string, const char *find)
{
   int i;
   for(;;)
   {
      for(i = 0; string[i] == find[i] && find[i]; ++i) ;
      if(find[i] == 0)
         return (char*)string;
      if(*string++ == 0)
         return NULL;
   }
}
 
 
int strlen(const char *string)
{
   const char *base=string;
   while(*string++) ;
   return string - base - 1;
}
 
 
void *memcpy(void *dst, const void *src, unsigned long bytes)
{
   if(((uint32)dst | (uint32)src | bytes) & 3)
   {
      uint8 *Dst = (uint8*)dst, *Src = (uint8*)src;
      while((int)bytes-- > 0)
         *Dst++ = *Src++;
   }
   else
   {
      uint32 *Dst32 = (uint32*)dst, *Src32 = (uint32*)src;
      bytes >>= 2;
      while((int)bytes-- > 0)
         *Dst32++ = *Src32++;
   }
   return dst;
}
 
 
void *memmove(void *dst, const void *src, unsigned long bytes)
{
   uint8 *Dst = (uint8*)dst;
   uint8 *Src = (uint8*)src;
   if(Dst < Src)
   {
      while((int)bytes-- > 0)
         *Dst++ = *Src++;
   }
   else
   {
      Dst += bytes;
      Src += bytes;
      while((int)bytes-- > 0)
         *--Dst = *--Src;
   }
   return dst;
}
 
 
int memcmp(const void *cs, const void *ct, unsigned long bytes)
{
   uint8 *Dst = (uint8*)cs;
   uint8 *Src = (uint8*)ct;
   int diff;
   while((int)bytes-- > 0)
   {
      diff = *Dst++ - *Src++;
      if(diff)
         return diff;
   }
   return 0;
}
 
 
void *memset(void *dst, int c, unsigned long bytes)
{
   uint8 *Dst = (uint8*)dst;
   while((int)bytes-- > 0)
      *Dst++ = (uint8)c;
   return dst;
}
 
 
int abs(int n)
{
   return n>=0 ? n : -n;
}
 
 
static uint32 Rand1=0x1f2bcda3, Rand2=0xdeafbeef, Rand3=0xc5134306;
int rand(void)
{
   int shift;
   Rand1 += 0x13423123 + Rand2;
   Rand2 += 0x2312fdea + Rand3;
   Rand3 += 0xf2a12de1;
   shift = Rand3 & 31;
   Rand1 = (Rand1 << (32 - shift)) | (Rand1 >> shift);
   Rand3 ^= Rand1;
   shift = (Rand3 >> 8) & 31;
   Rand2 = (Rand2 << (32 - shift)) | (Rand2 >> shift);
   return Rand1;
}
 
 
void srand(unsigned int seed)
{
   Rand1 = seed;
}
 
 
long strtol(const char *s, const char **end, int base)
{
   int i;
   unsigned long ch, value=0, neg=0;
 
   if(s[0] == '-')
   {
      neg = 1;
      ++s;
   }
   if(s[0] == '0' && s[1] == 'x')
   {
      base = 16;
      s += 2;
   }
   for(i = 0; i <= 8; ++i)
   {
      ch = *s++;
      if('0' <= ch && ch <= '9')
         ch -= '0';
      else if('A' <= ch && ch <= 'Z')
         ch = ch - 'A' + 10;
      else if('a' <= ch && ch <= 'z')
         ch = ch - 'a' + 10;
      else
         break;
      value = value * base + ch;
   }
   if(end)
      *end = s - 1;
   if(neg)
      value = -(int)value;
   return value;
}
 
 
int atoi(const char *s)
{
   return strtol(s, NULL, 10);
}
 
 
char *itoa(int num, char *dst, int base)
{
   int digit, negate=0, place;
   char c, text[20];
 
   if(base == 10 && num < 0)
   {
      num = -num;
      negate = 1;
   }
   text[16] = 0;
   for(place = 15; place >= 0; --place)
   {
      digit = (unsigned int)num % (unsigned int)base;
      if(num == 0 && place < 15 && base == 10 && negate)
      {
         c = '-';
         negate = 0;
      }
      else if(digit < 10)
         c = (char)('0' + digit);
      else
         c = (char)('a' + digit - 10);
      text[place] = c;
      num = (unsigned int)num / (unsigned int)base;
      if(num == 0 && negate == 0)
         break;
   }
   strcpy(dst, text + place);
   return dst;
}
 
 
int sprintf(char *s, const char *format,
            int arg0, int arg1, int arg2, int arg3,
            int arg4, int arg5, int arg6, int arg7)
{
   int argv[8];
   int argc=0, width, length;
   char f, text[20], fill;
 
   argv[0] = arg0; argv[1] = arg1; argv[2] = arg2; argv[3] = arg3;
   argv[4] = arg4; argv[5] = arg5; argv[6] = arg6; argv[7] = arg7;
 
   for(;;)
   {
      f = *format++;
      if(f == 0)
         return argc;
      else if(f == '%')
      {
         width = 0;
         fill = ' ';
         f = *format++;
         while('0' <= f && f <= '9')
         {
            width = width * 10 + f - '0';
            f = *format++;
         }
         if(f == '.')
         {
            fill = '0';
            f = *format++;
         }
         if(f == 0)
            return argc;
 
         if(f == 'd')
         {
            memset(s, fill, width);
            itoa(argv[argc++], text, 10);
            length = (int)strlen(text);
            if(width < length)
               width = length;
            strcpy(s + width - length, text);
         }
         else if(f == 'x' || f == 'f')
         {
            memset(s, '0', width);
            itoa(argv[argc++], text, 16);
            length = (int)strlen(text);
            if(width < length)
               width = length;
            strcpy(s + width - length, text);
         }
         else if(f == 'c')
         {
            *s++ = (char)argv[argc++];
            *s = 0;
         }
         else if(f == 's')
         {
            length = strlen((char*)argv[argc]);
            if(width > length)
            {
               memset(s, ' ', width - length);
               s += width - length;
            }
            strcpy(s, (char*)argv[argc++]);
         }
         s += strlen(s);
      }
      else if(f == '\\')
      {
         f = *format++;
         if(f == 0)
            return argc;
         else if(f == 'n')
            *s++ = '\n';
         else if(f == 'r')
            *s++ = '\r';
         else if(f == 't')
            *s++ = '\t';
      }
      else
      {
         *s++ = f;
      }
      *s = 0;
   }
}
 
 
int sscanf(const char *s, const char *format,
           int arg0, int arg1, int arg2, int arg3,
           int arg4, int arg5, int arg6, int arg7)
{
   int argv[8];
   int argc=0;
   char f, *ptr;
 
   argv[0] = arg0; argv[1] = arg1; argv[2] = arg2; argv[3] = arg3;
   argv[4] = arg4; argv[5] = arg5; argv[6] = arg6; argv[7] = arg7;
 
   for(;;)
   {
      if(*s == 0)
         return argc;
      f = *format++;
      if(f == 0)
         return argc;
      else if(f == '%')
      {
         while(isspace(*s))
            ++s;
         f = *format++;
         if(f == 0)
            return argc;
         if(f == 'd')
            *(int*)argv[argc++] = strtol(s, &s, 10);
         else if(f == 'x')
            *(int*)argv[argc++] = strtol(s, &s, 16);
         else if(f == 'c')
            *(char*)argv[argc++] = *s++;
         else if(f == 's')
         {
            ptr = (char*)argv[argc++];
            while(!isspace(*s))
               *ptr++ = *s++;
            *ptr = 0;
         }
      }
      else
      {
         if(f == '\\')
         {
            f = *format++;
            if(f == 0)
               return argc;
            else if(f == 'n')
               f = '\n';
            else if(f == 'r')
               f = '\r';
            else if(f == 't')
               f = '\t';
         }
         while(*s && *s != f)
            ++s;
         if(*s)
            ++s;
      }
   }
}
 
 
#ifdef INCLUDE_DUMP
/*********************** dump ***********************/
void dump(const unsigned char *data, int length)
{
   int i, index=0, value;
   char string[80];
   memset(string, 0, sizeof(string));
   for(i = 0; i < length; ++i)
   {
      if((i & 15) == 0)
      {
         if(strlen(string))
            printf("%s\n", string);
         printf("%4x ", i);
         memset(string, 0, sizeof(string));
         index = 0;
      }
      value = data[i];
      printf("%2x ", value);
      if(isprint(value))
         string[index] = (char)value;
      else
         string[index] = '.';
      ++index;
   }
   for(; index < 16; ++index)
      printf("   ");
   printf("%s\n", string);
}
#endif //INCLUDE_DUMP
 
 
#ifdef INCLUDE_QSORT
/*********************** qsort ***********************/
static void QsortSwap(char *base, long left, long right, long size)
{
   int temp, i;
   char *ptrLeft, *ptrRight;
   ptrLeft = base + left * size;
   ptrRight = base + right * size;
   for(i = 0; i < size; ++i)
   {
      temp = ptrLeft[i];
      ptrLeft[i] = ptrRight[i];
      ptrRight[i] = (char)temp;
   }
}
 
 
//Modified from K&R
static void qsort2(void *base, long left, long right, long size,
      int (*cmp)(const void *,const void *))
{
   int i, last;
   char *base2=(char*)base, *pivot;
   if(left >= right)
      return;
   QsortSwap(base2, left, (left + right)/2, size);
   last = left;
   pivot = &base2[left*size];
   for(i = left + 1; i <= right; ++i)
   {
      if(cmp(&base2[i*size], pivot) < 0)
         QsortSwap(base2, ++last, i, size);
   }
   QsortSwap(base2, left, last, size);
   qsort2(base, left, last-1, size, cmp);
   qsort2(base, last+1, right, size, cmp);
}
 
 
void qsort(void *base,
           long n,
           long size,
           int (*cmp)(const void *,const void *))
{
   qsort2(base, 0, n-1, size, cmp);
}
 
 
void *bsearch(const void *key,
              const void *base,
              long n,
              long size,
              int (*cmp)(const void *,const void *))
{
   long cond, low=0, high=n-1, mid;
   char *base2=(char*)base;
   while(low <= high)
   {
      mid = (low + high)/2;
      cond = cmp(key, &base2[mid*size]);
      if(cond < 0)
         high = mid - 1;
      else if(cond > 0)
         low = mid + 1;
      else
         return &base2[mid * size];
   }
   return NULL;
}
#endif //INCLUDE_QSORT
 
 
#ifdef INCLUDE_TIMELIB
/************************* time.h ***********************/
#define SEC_PER_YEAR (365L*24*60*60)
#define SEC_PER_DAY (24L*60*60)
//typedef unsigned long time_t;  //start at 1/1/80
//struct tm {
//   int tm_sec;      //(0,59)
//   int tm_min;      //(0,59)
//   int tm_hour;     //(0,23)
//   int tm_mday;     //(1,31)
//   int tm_mon;      //(0,11)
//   int tm_year;     //(0,n) from 1900
//   int tm_wday;     //(0,6)     calculated
//   int tm_yday;     //(0,365)   calculated
//   int tm_isdst;    //hour adjusted for day light savings
//};
static const unsigned short DaysUntilMonth[]=
   {0,31,59,90,120,151,181,212,243,273,304,334,365};
static const unsigned short DaysInMonth[]=
   {31,28,31,30,31,30,31,31,30,31,30,31};
static time_t DstTimeIn, DstTimeOut;
 
 
/* Leap year if divisible by 4.  Centenary years should only be
   leap-years if they were divisible by 400. */
static int IsLeapYear(int year)
{
   return(((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0));
}
 
time_t mktime(struct tm *tp)
{
   time_t seconds;
   unsigned long days, y, year;
 
   days = tp->tm_mday - 1 + DaysUntilMonth[tp->tm_mon] +
      365 * (tp->tm_year - 80);
   seconds = (unsigned long)tp->tm_sec + 60L * (tp->tm_min +
      60L * (tp->tm_hour + 24L * days));
   if(tp->tm_isdst)
      seconds -= 60 * 60;
   year = 1900 + tp->tm_year - (tp->tm_mon < 2);
   for(y = 1980; y <= year; y += 4)
   {
      if(y % 100 != 0 || y % 400 == 0)
         seconds += SEC_PER_DAY;
   }
   return seconds;
}
 
 
void gmtime_r(const time_t *tp, struct tm *out)
{
   time_t seconds, delta, secondsIn=*tp;
   int isLeapYear;
   unsigned long year, month;
 
   out->tm_isdst = 0;
   if(DstTimeIn <= secondsIn && secondsIn < DstTimeOut)
   {
      secondsIn += 60 * 60;
      out->tm_isdst = 1;
   }
   seconds = secondsIn;
   for(year = 0; ; ++year)
   {
      delta = SEC_PER_YEAR + IsLeapYear(1980 + year) * SEC_PER_DAY;
      if(seconds >= delta)
         seconds -= delta;
      else
         break;
   }
   out->tm_year = year + 80;
   isLeapYear = IsLeapYear(1980 + year);
   for(month = 0; ; ++month)
   {
      delta = SEC_PER_DAY * (DaysInMonth[month] + (isLeapYear && (month == 1)));
      if(seconds >= delta)
         seconds -= delta;
      else
         break;
   }
   out->tm_mon = month;
   out->tm_mday = seconds / SEC_PER_DAY;
   out->tm_yday = DaysUntilMonth[month] + out->tm_mday;
   seconds -= out->tm_mday * SEC_PER_DAY;
   ++out->tm_mday;
   out->tm_hour = seconds / (60 * 60);
   seconds -= out->tm_hour * (60 * 60);
   out->tm_min = seconds / 60;
   seconds -= out->tm_min * 60;
   out->tm_sec = seconds;
   seconds = secondsIn % (SEC_PER_DAY * 7);
   out->tm_wday = (seconds / SEC_PER_DAY + 2) % 7; /* 1/1/80 is a Tue */
   //printf("%4.d/%2.d/%2.d:%2.d:%2.d:%2.d\n", 
   //         out->tm_year+1900, out->tm_mon+1, out->tm_mday,
   //         out->tm_hour, out->tm_min, out->tm_sec);
}
 
 
void gmtimeDst(time_t dstTimeIn, time_t dstTimeOut)
{
   DstTimeIn = dstTimeIn;
   DstTimeOut = dstTimeOut;
}
 
 
//DST from 2am on the second Sunday in March to 2am first Sunday in November
void gmtimeDstSet(time_t *tp, time_t *dstTimeIn, time_t *dstTimeOut)
{
   time_t seconds, timeIn, timeOut;
   struct tm tmDate;
   int year, days;
 
   DstTimeIn = 0;
   DstTimeOut = 0;
   gmtime_r(tp, &tmDate);
   year = tmDate.tm_year;
 
   //March 1, year, 2AM -> second Sunday
   tmDate.tm_year = year;
   tmDate.tm_mon = 2;
   tmDate.tm_mday = 1;
   tmDate.tm_hour = 2;
   tmDate.tm_min = 0;
   tmDate.tm_sec = 0;
   seconds = mktime(&tmDate);
   gmtime_r(&seconds, &tmDate);
   days = 7 - tmDate.tm_wday + 7;
   *dstTimeIn = timeIn = seconds + days * SEC_PER_DAY;
 
   //November 1, year, 2AM -> first Sunday
   tmDate.tm_year = year;
   tmDate.tm_mon = 10;
   tmDate.tm_mday = 1;
   tmDate.tm_hour = 2;
   tmDate.tm_min = 0;
   tmDate.tm_sec = 0;
   seconds = mktime(&tmDate);
   gmtime_r(&seconds, &tmDate);
   days = 7 - tmDate.tm_wday;
   *dstTimeOut = timeOut = seconds + days * SEC_PER_DAY;
 
   DstTimeIn = timeIn;
   DstTimeOut = timeOut;
}
#endif //INCLUDE_TIMELIB
 

Line No.	Rev	Author	Line
1	138	rhoads	`/*--------------------------------------------------------------------`
2			`* TITLE: ANSI C Library`
3			`* AUTHOR: Steve Rhoads (rhoadss@yahoo.com)`
4			`* DATE CREATED: 12/17/05`
5	171	rhoads	`* FILENAME: libc.c`
6	138	rhoads	`* PROJECT: Plasma CPU core`
7			`* COPYRIGHT: Software placed into the public domain by the author.`
8			`* Software 'as is' without warranty. Author liable for nothing.`
9			`* DESCRIPTION:`
10			`* Subset of the ANSI C library`
11			`--------------------------------------------------------------------/`
12			`#define NO_ELLIPSIS`
13			`#include "rtos.h"`
14
15
16			`char strcpy(char dst, const char *src)`
17			`{`
18			`int c;`
19			`do`
20			`{`
21			`c = dst++ = src++;`
22			`} while(c);`
23			`return dst;`
24			`}`
25
26
27			`char strncpy(char dst, const char *src, int count)`
28			`{`
29			`int c=1;`
30			`while(count-- > 0 && c)`
31			`c = dst++ = src++;`
32			`*dst = 0;`
33			`return dst;`
34			`}`
35
36
37			`char strcat(char dst, const char *src)`
38			`{`
39			`int c;`
40			`while(*dst)`
41			`++dst;`
42			`do`
43			`{`
44			`c = dst++ = src++;`
45			`} while(c);`
46			`return dst;`
47			`}`
48
49
50			`char strncat(char dst, const char *src, int count)`
51			`{`
52			`int c=1;`
53			`while(*dst && --count > 0)`
54			`++dst;`
55			`while(--count > 0 && c)`
56			`c = dst++ = src++;`
57			`*dst = 0;`
58			`return dst;`
59			`}`
60
61
62			`int strcmp(const char string1, const char string2)`
63			`{`
64			`int diff, c;`
65			`for(;;)`
66			`{`
67			`diff = string1++ - (c = string2++);`
68			`if(diff)`
69			`return diff;`
70			`if(c == 0)`
71			`return 0;`
72			`}`
73			`}`
74
75
76			`int strncmp(const char string1, const char string2, int count)`
77			`{`
78			`int diff, c;`
79			`while(count-- > 0)`
80			`{`
81			`diff = string1++ - (c = string2++);`
82			`if(diff)`
83			`return diff;`
84			`if(c == 0)`
85			`return 0;`
86			`}`
87			`return 0;`
88			`}`
89
90
91	149	rhoads	`char strstr(const char string, const char *find)`
92	138	rhoads	`{`
93			`int i;`
94			`for(;;)`
95			`{`
96			`for(i = 0; string[i] == find[i] && find[i]; ++i) ;`
97			`if(find[i] == 0)`
98	149	rhoads	`return (char*)string;`
99	138	rhoads	`if(*string++ == 0)`
100			`return NULL;`
101			`}`
102			`}`
103
104
105			`int strlen(const char *string)`
106			`{`
107			`const char *base=string;`
108			`while(*string++) ;`
109			`return string - base - 1;`
110			`}`
111
112
113			`void memcpy(void dst, const void *src, unsigned long bytes)`
114			`{`
115	249	rhoads	`if(((uint32)dst \| (uint32)src \| bytes) & 3)`
116			`{`
117			`uint8 Dst = (uint8)dst, Src = (uint8)src;`
118			`while((int)bytes-- > 0)`
119			`Dst++ = Src++;`
120			`}`
121			`else`
122			`{`
123			`uint32 Dst32 = (uint32)dst, Src32 = (uint32)src;`
124			`bytes >>= 2;`
125			`while((int)bytes-- > 0)`
126			`Dst32++ = Src32++;`
127			`}`
128	138	rhoads	`return dst;`
129			`}`
130
131
132	144	rhoads	`void memmove(void dst, const void *src, unsigned long bytes)`
133			`{`
134			`uint8 Dst = (uint8)dst;`
135			`uint8 Src = (uint8)src;`
136			`if(Dst < Src)`
137			`{`
138			`while((int)bytes-- > 0)`
139			`Dst++ = Src++;`
140			`}`
141			`else`
142			`{`
143			`Dst += bytes;`
144			`Src += bytes;`
145			`while((int)bytes-- > 0)`
146			`--Dst = --Src;`
147			`}`
148			`return dst;`
149			`}`
150
151
152	138	rhoads	`int memcmp(const void cs, const void ct, unsigned long bytes)`
153			`{`
154			`uint8 Dst = (uint8)cs;`
155			`uint8 Src = (uint8)ct;`
156			`int diff;`
157			`while((int)bytes-- > 0)`
158			`{`
159			`diff = Dst++ - Src++;`
160			`if(diff)`
161			`return diff;`
162			`}`
163			`return 0;`
164			`}`
165
166
167			`void memset(void dst, int c, unsigned long bytes)`
168			`{`
169			`uint8 Dst = (uint8)dst;`
170			`while((int)bytes-- > 0)`
171			`*Dst++ = (uint8)c;`
172			`return dst;`
173			`}`
174
175
176			`int abs(int n)`
177			`{`
178			`return n>=0 ? n : -n;`
179			`}`
180
181
182			`static uint32 Rand1=0x1f2bcda3, Rand2=0xdeafbeef, Rand3=0xc5134306;`
183	149	rhoads	`int rand(void)`
184	138	rhoads	`{`
185			`int shift;`
186			`Rand1 += 0x13423123 + Rand2;`
187			`Rand2 += 0x2312fdea + Rand3;`
188			`Rand3 += 0xf2a12de1;`
189			`shift = Rand3 & 31;`
190			`Rand1 = (Rand1 << (32 - shift)) \| (Rand1 >> shift);`
191			`Rand3 ^= Rand1;`
192			`shift = (Rand3 >> 8) & 31;`
193			`Rand2 = (Rand2 << (32 - shift)) \| (Rand2 >> shift);`
194			`return Rand1;`
195			`}`
196
197
198			`void srand(unsigned int seed)`
199			`{`
200			`Rand1 = seed;`
201			`}`
202
203
204			`long strtol(const char s, const char *end, int base)`
205			`{`
206			`int i;`
207			`unsigned long ch, value=0, neg=0;`
208
209			`if(s[0] == '-')`
210			`{`
211			`neg = 1;`
212			`++s;`
213			`}`
214			`if(s[0] == '0' && s[1] == 'x')`
215			`{`
216			`base = 16;`
217			`s += 2;`
218			`}`
219			`for(i = 0; i <= 8; ++i)`
220			`{`
221			`ch = *s++;`
222			`if('0' <= ch && ch <= '9')`
223			`ch -= '0';`
224			`else if('A' <= ch && ch <= 'Z')`
225			`ch = ch - 'A' + 10;`
226			`else if('a' <= ch && ch <= 'z')`
227			`ch = ch - 'a' + 10;`
228			`else`
229			`break;`
230			`value = value * base + ch;`
231			`}`
232			`if(end)`
233			`*end = s - 1;`
234			`if(neg)`
235			`value = -(int)value;`
236			`return value;`
237			`}`
238
239
240			`int atoi(const char *s)`
241			`{`
242			`return strtol(s, NULL, 10);`
243			`}`
244
245
246	149	rhoads	`char itoa(int num, char dst, int base)`
247	138	rhoads	`{`
248	149	rhoads	`int digit, negate=0, place;`
249			`char c, text[20];`
250	138	rhoads
251			`if(base == 10 && num < 0)`
252			`{`
253			`num = -num;`
254			`negate = 1;`
255			`}`
256	149	rhoads	`text[16] = 0;`
257			`for(place = 15; place >= 0; --place)`
258	138	rhoads	`{`
259	187	rhoads	`digit = (unsigned int)num % (unsigned int)base;`
260	149	rhoads	`if(num == 0 && place < 15 && base == 10 && negate)`
261	138	rhoads	`{`
262	149	rhoads	`c = '-';`
263	138	rhoads	`negate = 0;`
264			`}`
265			`else if(digit < 10)`
266			`c = (char)('0' + digit);`
267			`else`
268			`c = (char)('a' + digit - 10);`
269	149	rhoads	`text[place] = c;`
270			`num = (unsigned int)num / (unsigned int)base;`
271			`if(num == 0 && negate == 0)`
272			`break;`
273	138	rhoads	`}`
274	149	rhoads	`strcpy(dst, text + place);`
275			`return dst;`
276	138	rhoads	`}`
277
278
279			`int sprintf(char s, const char format,`
280			`int arg0, int arg1, int arg2, int arg3,`
281			`int arg4, int arg5, int arg6, int arg7)`
282			`{`
283			`int argv[8];`
284			`int argc=0, width, length;`
285	187	rhoads	`char f, text[20], fill;`
286	138	rhoads
287			`argv[0] = arg0; argv[1] = arg1; argv[2] = arg2; argv[3] = arg3;`
288			`argv[4] = arg4; argv[5] = arg5; argv[6] = arg6; argv[7] = arg7;`
289
290			`for(;;)`
291			`{`
292			`f = *format++;`
293			`if(f == 0)`
294			`return argc;`
295			`else if(f == '%')`
296			`{`
297			`width = 0;`
298	187	rhoads	`fill = ' ';`
299	138	rhoads	`f = *format++;`
300	187	rhoads	`while('0' <= f && f <= '9')`
301	138	rhoads	`{`
302	187	rhoads	`width = width * 10 + f - '0';`
303	138	rhoads	`f = *format++;`
304			`}`
305	187	rhoads	`if(f == '.')`
306			`{`
307			`fill = '0';`
308			`f = *format++;`
309			`}`
310			`if(f == 0)`
311			`return argc;`
312	138	rhoads
313			`if(f == 'd')`
314	149	rhoads	`{`
315	187	rhoads	`memset(s, fill, width);`
316	149	rhoads	`itoa(argv[argc++], text, 10);`
317			`length = (int)strlen(text);`
318			`if(width < length)`
319			`width = length;`
320			`strcpy(s + width - length, text);`
321			`}`
322	138	rhoads	`else if(f == 'x' \|\| f == 'f')`
323	149	rhoads	`{`
324			`memset(s, '0', width);`
325			`itoa(argv[argc++], text, 16);`
326			`length = (int)strlen(text);`
327			`if(width < length)`
328			`width = length;`
329			`strcpy(s + width - length, text);`
330			`}`
331	138	rhoads	`else if(f == 'c')`
332			`{`
333			`*s++ = (char)argv[argc++];`
334			`*s = 0;`
335			`}`
336			`else if(f == 's')`
337			`{`
338			`length = strlen((char*)argv[argc]);`
339			`if(width > length)`
340			`{`
341			`memset(s, ' ', width - length);`
342			`s += width - length;`
343			`}`
344			`strcpy(s, (char*)argv[argc++]);`
345			`}`
346			`s += strlen(s);`
347			`}`
348			`else if(f == '\\')`
349			`{`
350			`f = *format++;`
351			`if(f == 0)`
352			`return argc;`
353			`else if(f == 'n')`
354			`*s++ = '\n';`
355			`else if(f == 'r')`
356			`*s++ = '\r';`
357			`else if(f == 't')`
358			`*s++ = '\t';`
359			`}`
360			`else`
361			`{`
362			`*s++ = f;`
363			`}`
364			`*s = 0;`
365			`}`
366			`}`
367
368
369			`int sscanf(const char s, const char format,`
370			`int arg0, int arg1, int arg2, int arg3,`
371			`int arg4, int arg5, int arg6, int arg7)`
372			`{`
373			`int argv[8];`
374	187	rhoads	`int argc=0;`
375			`char f, *ptr;`
376	138	rhoads
377			`argv[0] = arg0; argv[1] = arg1; argv[2] = arg2; argv[3] = arg3;`
378			`argv[4] = arg4; argv[5] = arg5; argv[6] = arg6; argv[7] = arg7;`
379
380			`for(;;)`
381			`{`
382			`if(*s == 0)`
383			`return argc;`
384			`f = *format++;`
385			`if(f == 0)`
386			`return argc;`
387			`else if(f == '%')`
388			`{`
389			`while(isspace(*s))`
390			`++s;`
391			`f = *format++;`
392			`if(f == 0)`
393			`return argc;`
394			`if(f == 'd')`
395			`(int)argv[argc++] = strtol(s, &s, 10);`
396			`else if(f == 'x')`
397			`(int)argv[argc++] = strtol(s, &s, 16);`
398			`else if(f == 'c')`
399			`(char)argv[argc++] = *s++;`
400			`else if(f == 's')`
401			`{`
402	207	rhoads	`ptr = (char*)argv[argc++];`
403	187	rhoads	`while(!isspace(*s))`
404			`ptr++ = s++;`
405			`*ptr = 0;`
406	138	rhoads	`}`
407			`}`
408			`else`
409			`{`
410			`if(f == '\\')`
411			`{`
412			`f = *format++;`
413			`if(f == 0)`
414			`return argc;`
415			`else if(f == 'n')`
416			`f = '\n';`
417			`else if(f == 'r')`
418			`f = '\r';`
419			`else if(f == 't')`
420			`f = '\t';`
421			`}`
422			`while(s && s != f)`
423			`++s;`
424			`if(*s)`
425			`++s;`
426			`}`
427			`}`
428			`}`
429
430	149	rhoads
431	171	rhoads	`#ifdef INCLUDE_DUMP`
432			`/********************* dump *********************/`
433	149	rhoads	`void dump(const unsigned char *data, int length)`
434			`{`
435			`int i, index=0, value;`
436			`char string[80];`
437			`memset(string, 0, sizeof(string));`
438			`for(i = 0; i < length; ++i)`
439			`{`
440			`if((i & 15) == 0)`
441			`{`
442			`if(strlen(string))`
443			`printf("%s\n", string);`
444			`printf("%4x ", i);`
445			`memset(string, 0, sizeof(string));`
446			`index = 0;`
447			`}`
448			`value = data[i];`
449			`printf("%2x ", value);`
450			`if(isprint(value))`
451			`string[index] = (char)value;`
452			`else`
453			`string[index] = '.';`
454			`++index;`
455			`}`
456			`for(; index < 16; ++index)`
457			`printf(" ");`
458			`printf("%s\n", string);`
459			`}`
460	171	rhoads	`#endif //INCLUDE_DUMP`
461	149	rhoads
462
463	171	rhoads	`#ifdef INCLUDE_QSORT`
464			`/********************* qsort *********************/`
465			`static void QsortSwap(char *base, long left, long right, long size)`
466			`{`
467	249	rhoads	`int temp, i;`
468			`char ptrLeft, ptrRight;`
469			`ptrLeft = base + left * size;`
470			`ptrRight = base + right * size;`
471			`for(i = 0; i < size; ++i)`
472			`{`
473			`temp = ptrLeft[i];`
474			`ptrLeft[i] = ptrRight[i];`
475			`ptrRight[i] = (char)temp;`
476			`}`
477	171	rhoads	`}`
478	149	rhoads
479	171	rhoads
480			`//Modified from K&R`
481			`static void qsort2(void *base, long left, long right, long size,`
482			`int (cmp)(const void ,const void *))`
483			`{`
484			`int i, last;`
485	187	rhoads	`char base2=(char)base, *pivot;`
486	171	rhoads	`if(left >= right)`
487			`return;`
488			`QsortSwap(base2, left, (left + right)/2, size);`
489			`last = left;`
490	187	rhoads	`pivot = &base2[left*size];`
491	171	rhoads	`for(i = left + 1; i <= right; ++i)`
492			`{`
493	187	rhoads	`if(cmp(&base2[i*size], pivot) < 0)`
494	171	rhoads	`QsortSwap(base2, ++last, i, size);`
495			`}`
496			`QsortSwap(base2, left, last, size);`
497			`qsort2(base, left, last-1, size, cmp);`
498			`qsort2(base, last+1, right, size, cmp);`
499			`}`
500

Browse

Tools

Subversion Repositories plasma

[/] [plasma/] [trunk/] [kernel/] [libc.c] - Blame information for rev 249