// --- Errors ---
void __stack_chk_fail()
{
- write(2, 32, "FATAL ERROR: Stack Check Failed\n");
+ write(2, "FATAL ERROR: Stack Check Failed\n", 32);
_exit(-1);
for(;;);
}
-// --- 64-Bit Math ---
-/**
- * \fn uint64_t __udivdi3(uint64_t Num, uint64_t Den)
- * \brief Divide two 64-bit integers
- */
-uint64_t __udivdi3(uint64_t Num, uint64_t Den)
-{
- #if 0
- uint64_t ret = 0;
- if(Den == 0) // Call Div by Zero Error
- __asm__ __volatile__ ("int $0");
-
- if(Den == 1) return Num;
- if(Den == 2) return Num >> 1;
- if(Den == 4) return Num >> 2;
- if(Den == 8) return Num >> 3;
- if(Den == 16) return Num >> 4;
- if(Den == 32) return Num >> 5;
- if(Den == 64) return Num >> 6;
- if(Den == 128) return Num >> 7;
- if(Den == 256) return Num >> 8;
-
- while(Num > Den) {
- ret ++;
- Num -= Den;
- }
- return ret;
- #else
- uint64_t P[64], q, n;
- int i;
-
- if(Den == 0) __asm__ __volatile__ ("int $0x0");
- // Common speedups
- if(Den == 1) return Num;
- if(Den == 2) return Num >> 1;
- if(Den == 16) return Num >> 4;
-
-
- // Non-restoring division, from wikipedia
- // http://en.wikipedia.org/wiki/Division_(digital)
- P[0] = Num;
- for( i = 0; i < 64; i ++ )
- {
- if( P[i] >= 0 ) {
- q |= (uint64_t)1 << (63-i);
- P[i+1] = 2*P[i] - Den;
- }
- else {
- //q |= 0 << (63-i);
- P[i+1] = 2*P[i] + Den;
- }
- }
-
- n = ~q;
- n = -n;
- q += n;
-
- return q;
- #endif
-}
-
-/**
- * \fn uint64_t __umoddi3(uint64_t Num, uint64_t Den)
- * \brief Get the modulus of two 64-bit integers
- */
-uint64_t __umoddi3(uint64_t Num, uint64_t Den)
-{
- #if 0
- if(Den == 0) __asm__ __volatile__ ("int $0"); // Call Div by Zero Error
-
- if(Den == 1) return 0;
- if(Den == 2) return Num & 0x01;
- if(Den == 4) return Num & 0x03;
- if(Den == 8) return Num & 0x07;
- if(Den == 16) return Num & 0x0F;
- if(Den == 32) return Num & 0x1F;
- if(Den == 64) return Num & 0x3F;
- if(Den == 128) return Num & 0x3F;
- if(Den == 256) return Num & 0x7F;
-
- while(Num >= Den) Num -= Den;
-
- return Num;
- #else
- if(Den == 0) __asm__ __volatile__ ("int $0"); // Call Div by Zero Error
- // Speedups for common operations
- if(Den == 1) return 0;
- if(Den == 2) return Num & 0x01;
- if(Den == 8) return Num & 0x07;
- if(Den == 16) return Num & 0x0F;
- return Num - __udivdi3(Num, Den) * Den;
- #endif
-}