diff options
Diffstat (limited to 'tools/iso/kernel.soso/common.c')
| -rw-r--r-- | tools/iso/kernel.soso/common.c | 387 |
1 files changed, 0 insertions, 387 deletions
diff --git a/tools/iso/kernel.soso/common.c b/tools/iso/kernel.soso/common.c deleted file mode 100644 index 446f21a2..00000000 --- a/tools/iso/kernel.soso/common.c +++ /dev/null @@ -1,387 +0,0 @@ -#include "common.h" -#include "screen.h" -#include "ttydriver.h" - -static BOOL gInterruptsWereEnabled = FALSE; - -// Write a byte out to the specified port. -void outb(uint16 port, uint8 value) { - asm volatile ("outb %1, %0" : : "dN" (port), "a" (value)); -} - -void outw(uint16 port, uint16 value) { - asm volatile ("outw %1, %0" : : "dN" (port), "a" (value)); -} - -uint8 inb(uint16 port) { - uint8 ret; - asm volatile("inb %1, %0" : "=a" (ret) : "dN" (port)); - return ret; -} - -uint16 inw(uint16 port) { - uint16 ret; - asm volatile ("inw %1, %0" : "=a" (ret) : "dN" (port)); - return ret; -} - -// Copy len bytes from src to dest. -void* memcpy(uint8 *dest, const uint8 *src, uint32 len) { - const uint8 *sp = (const uint8 *)src; - uint8 *dp = (uint8 *)dest; - for(; len != 0; len--) *dp++ = *sp++; - - return dest; -} - -// Write len copies of val into dest. -void* memset(uint8 *dest, uint8 val, uint32 len) { - uint8 *temp = (uint8 *)dest; - for ( ; len != 0; len--) *temp++ = val; - - return dest; -} - -void* memmove(void* dest, const void* src, uint32 n) { - uint8* _dest; - uint8* _src; - - if ( dest < src ) { - _dest = ( uint8* )dest; - _src = ( uint8* )src; - - while ( n-- ) { - *_dest++ = *_src++; - } - } else { - _dest = ( uint8* )dest + n; - _src = ( uint8* )src + n; - - while ( n-- ) { - *--_dest = *--_src; - } - } - - return dest; -} - -int memcmp( const void* p1, const void* p2, uint32 c ) { - const uint8* su1, *su2; - int8 res = 0; - - for ( su1 = p1, su2 = p2; 0 < c; ++su1, ++su2, c-- ) { - if ( ( res = *su1 - *su2 ) != 0 ) { - break; - } - } - - return res; -} - -// Compare two strings. Should return -1 if -// str1 < str2, 0 if they are equal or 1 otherwise. -int strcmp(const char *str1, const char *str2) { - int i = 0; - int failed = 0; - while(str1[i] != '\0' && str2[i] != '\0') { - if(str1[i] != str2[i]) { - failed = 1; - break; - } - i++; - } - - if ((str1[i] == '\0' && str2[i] != '\0') || (str1[i] != '\0' && str2[i] == '\0')) { - failed = 1; - } - - return failed; -} - -int strncmp(const char *str1, const char *str2, int length) { - for (int i = 0; i < length; ++i) { - if (str1[i] != str2[i]) { - return str1[i] - str2[i]; - } - } - - return 0; -} - -// Copy the NULL-terminated string src into dest, and -// return dest. -char *strcpy(char *dest, const char *src) { - do { - *dest++ = *src++; - } - while (*src != 0); - *dest = '\0'; - - return dest; -} - -char *strcpyNonNull(char *dest, const char *src) { - do { - *dest++ = *src++; - } - while (*src != 0); - - return dest; -} - -//Copies the first num characters of source to destination. If the end of the source C string is found before num characters have been copied, -//destination is padded with zeros until a total of num characters have been written to it. -//No null-character is implicitly appended at the end of destination if source is longer than num. -//Thus, in this case, destination shall not be considered a null terminated C string. -char *strncpy(char *dest, const char *src, uint32 num) { - BOOL sourceEnded = FALSE; - for (uint32 i = 0; i < num; ++i) { - if (sourceEnded == FALSE && src[i] == '\0') { - sourceEnded = TRUE; - } - - if (sourceEnded) { - dest[i] = '\0'; - } - else { - dest[i] = src[i]; - } - } - - return dest; -} - -char* strcat(char *dest, const char *src) { - size_t i,j; - for (i = 0; dest[i] != '\0'; i++) - ; - for (j = 0; src[j] != '\0'; j++) - dest[i+j] = src[j]; - dest[i+j] = '\0'; - return dest; -} - -int strlen(const char *src) { - int i = 0; - while (*src++) - i++; - return i; -} - -int strFirstIndexOf(const char *src, char c) { - int i = 0; - while (src[i]) { - if (src[i] == c) { - return i; - } - i++; - } - - return -1; -} - -uint32 rand() { - 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); -} - -int atoi(char *str) { - int result = 0; - - for (int i = 0; str[i] != '\0'; ++i) { - result = result*10 + str[i] - '0'; - } - - return result; -} - -void itoa (char *buf, int base, int d) { - char *p = buf; - char *p1, *p2; - unsigned long ud = d; - int divisor = 10; - - - if (base == 'd' && d < 0) { - *p++ = '-'; - buf++; - ud = -d; - } - else if (base == 'x') { - divisor = 16; - } - - do { - int remainder = ud % divisor; - - *p++ = (remainder < 10) ? remainder + '0' : remainder + 'A' - 10; - } - while (ud /= divisor); - - - *p = 0; - - //Reverse BUF. - p1 = buf; - p2 = p - 1; - while (p1 < p2) { - char tmp = *p1; - *p1 = *p2; - *p2 = tmp; - p1++; - p2--; - } -} - -int sprintf_va(char* buffer, const char *format, __builtin_va_list vl) { - char c; - char buf[20]; - - int bufferIndex = 0; - - while ((c = *format++) != 0) { - if (c != '%') - buffer[bufferIndex++] = c; - else { - char *p; - - c = *format++; - switch (c) { - case 'x': - buf[0] = '0'; - buf[1] = 'x'; - //itoa (buf + 2, c, *((int *) arg++)); - itoa (buf + 2, c, __builtin_va_arg(vl, int)); - p = buf; - goto string; - break; - case 'd': - case 'u': - //itoa (buf, c, *((int *) arg++)); - itoa (buf, c, __builtin_va_arg(vl, int)); - p = buf; - goto string; - break; - - case 's': - //p = *arg++; - p = __builtin_va_arg(vl, char*); - if (! p) - p = "(null)"; - - string: - while (*p) - buffer[bufferIndex++] = (*p++); - break; - - default: - //buffer[bufferIndex++] = (*((int *) arg++)); - buffer[bufferIndex++] = __builtin_va_arg(vl, int); - break; - } - } - } - - buffer[bufferIndex] = '\0'; - - return bufferIndex; -} - -int sprintf(char* buffer, const char *format, ...) { - int result = 0; - - __builtin_va_list vl; - __builtin_va_start(vl, format); - - result = sprintf_va(buffer, format, vl); - - __builtin_va_end(vl); - - return result; -} - -void printkf(const char *format, ...) { - char buffer[1024]; - buffer[0] = 'k'; - buffer[1] = ':'; - buffer[2] = 0; - - Tty* tty = getActiveTTY(); - if (tty) { - __builtin_va_list vl; - __builtin_va_start(vl, format); - - sprintf_va(buffer+2, format, vl); - - __builtin_va_end(vl); - - Tty_PutText(tty, buffer); - - if (tty->flushScreen) { - tty->flushScreen(tty); - } - } -} - -void panic(const char *message, const char *file, uint32 line) { - disableInterrupts(); - - printkf("PANIC:%s:%d:%s\n", file, line, message); - - halt(); -} - -void warning(const char *message, const char *file, uint32 line) { - printkf("WARNING:%s:%d:%s\n", file, line, message); -} - -void panic_assert(const char *file, uint32 line, const char *desc) { - disableInterrupts(); - - printkf("ASSERTION-FAILED:%s:%d:%s\n", file, line, desc); - - halt(); -} - -uint32 readEsp() { - uint32 stack_pointer; - asm volatile("mov %%esp, %0" : "=r" (stack_pointer)); - - return stack_pointer; -} - -uint32 getCpuFlags() { - uint32 eflags = 0; - - asm("pushfl; pop %%eax; mov %%eax, %0": "=m"(eflags):); - - return eflags; -} - -BOOL isInterruptsEnabled() { - uint32 eflags = getCpuFlags(); - - uint32 interruptFlag = 0x200; //9th flag - - return (eflags & interruptFlag) == interruptFlag; -} - -void beginCriticalSection() { - gInterruptsWereEnabled = isInterruptsEnabled(); - - disableInterrupts(); -} - -void endCriticalSection() { - if (gInterruptsWereEnabled) { - enableInterrupts(); - } -} |