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minzkn/mmx

MMX

1.1. MMX¶õ?

  • MMX´Â MultiMedia eXtentionÀÇ ¾àÀÚ·Î ±× ¸ñÀûÀº ¹ü¿ë·¹Áö½ºÅÍÀÇ Å©±âº¸´Ù Å« Á¤¼ö¿¬»êÀ» º¸´Ù ºü¸£°Ô Çϱâ À§ÇÔÀÔ´Ï´Ù.
  • ÀÌ ¹®¼­¸¦ ÀÛ¼ºÇÏ´Â ÇöÀç½ÃÁ¡À» ±âÁØÀ¸·Î MM0 ~ 7±îÁöÀÇ Æ¯¼ö ¸íĪÀÌ MMX¿¡ »ç¿ëµÇ°í ÀÖÀ¸¸ç À̸§¸¸ ÀÌ·¸°Ô »ç¿ëµÉ»Ó »ç½Ç»ó ºÎµ¿¼Ò¼öÁ¡ ¿¬»ê¿ë ·¹Áö½ºÅ͸¦ »ç¿ëÇÏ°Ô µË´Ï´Ù. (ÀÌ·¯ÇÑ ÀÌÀ¯·Î ¾Æ·¡ ¼³¸íÇÏÁö¸¸ EMMSÀÇ ¸í·É¿¡ ´ëÇؼ­ ÇÊ¿äÇÑ ÀÌÀ¯¸¦ ÀÌÇØÇϼ¼¿ä!)
  • MMXÀÇ °¡Àå ´ëÇ¥ÀûÀÎ ±â´ÉÀ¸·Î´Â 8¹ÙÀÌÆ® ´ÜÀ§·Î Data¸¦ Àü¼ÛÇÏ´Â °ÍÀε¥ ÀÌ°Í ¸»°íµµ ±âº» »ê¼ú¿¬»ê ¹× ³í¸®¿¬»êÀ» ÇÒ¼ö ÀÖ°Ô µÇ¾î ÀÖ½À´Ï´Ù.
  • MMX´Â ¹ü¿ë·¹Áö½ºÅÍ·Î ÇÏ´Â ±â´É°ú ºñ±³ÇßÀ» ¶§ ´Ù¸¥ Á¡ÀÌ Packed mode¶ó´Â °ÍÀÌ Àִµ¥ ¾ÆÁ÷ ÀÌ°Í¿¡ ´ëÇÑ Çʿ伺À» Á¦°¡ ¸ø´À³¢°í ÀÖ´Â °ü°è·Î ³ªÁß¿¡ Çʿ伺ÀÌ »ý±â¸é Á¤¸®Á» Çغ¸°Ú½À´Ï´Ù.

1.2. MMXÀÇ Áö¿ø¿©ºÎ ÆÇ´Ü

  • ¾Æ·¡¿Í °°ÀÌ cpuid¸í·ÉÀ» ÅëÇÏ¿© ÇØ´ç ±â´ÉÀÇ Áö¿ø ¿©ºÎ¸¦ È®ÀÎ ÇÒ¼ö ÀÖ½À´Ï´Ù. À̹ۿ¡ 3D-NOW°°Àº °æ¿ìµµ ºñ½ÁÇÑ ¹æ¹ýÀ¸·Î Áö¿ø¿©ºÎ¸¦ ¾Ë¼ö ÀÖ°Ú½À´Ï´Ù.
    int MZ_IsMMX(void)
    {
     static int s_Return = (-1);    
     if(s_Return == (-1))
     {
      __asm__ __volatile__(
       "\n\t"
       "movl $1, %%eax\n\t"
       "cpuid\n\t"
       "xorl %%eax, %%eax\n\t"
       "testl $0x800000, %%edx\n\t"
       "jz L_Return\n\t"
       "incl %%eax\n\t"
       "L_Return:\n\t"
       "movl %%eax, %0\n\t"
       "\n\t"
       : "=m"(s_Return)
       :
       : "ebx"
      );
     }
     return(s_Return);
    }

1.3. MMX ¸í·É¾î ¿ä¾àÇ¥

  • Ưº°ÇÑ ¼³¸íÀÌ ¾ø´õ¶óµµ ¾Æ·¡ÀÇ ¿ä¾àÇ¥¸¦ º¸½Ã¸é ¾î¼Àºí¸® °³¹ßÀںеéÀ̶ó¸é ±×¸® ¾î·ÆÁö ¾Ê°Ô Á¢±ÙÇϽǼö ÀÖÀ»°Ì´Ï´Ù.
  • EMMS¿¡ ´ëÇØ °£´ÜÈ÷ Ãß°¡¼³¸íÇÏÀÚ¸é ºÎµ¿¼Ò¼öÁ¡ ¿¬»êÀ» Çϱâ À§Çؼ­ »óŸ¦ Áö¿ï ÇÊ¿ä°¡ Àִµ¥ ±×·± °æ¿ì¿¡ ÀûÀýÈ÷ »ðÀÔÇÏ¿© »ç¿ëÇÏ¿©¾ß ÇÕ´Ï´Ù. (Áï, MMX¸í·ÉÀ» »ç¿ëÇÏ°Ô µÇ¸é EMMS¸í·ÉÀº µÚµû¶ó¾ß °ñÄ¡¾ÆÇ ¿Àµ¿ÀÛ °è»êÀ» ¹æÁöÇÒ¼ö ÀÖ½À´Ï´Ù.)
    ±â´É °ªÀÇ ¼øȯÀÌ °í·ÁµÉ ¶§ ºÎÈ£°¡ °í·ÁµÉ ¶§ ºÎÈ£°¡ °í·ÁµÇÁö ¾ÊÀ» ¶§
    »ê¼úµ¡¼À PADDB, PADDW, PADDD PADDSB, PADDSW PADDUB, PADDUW
    »ê¼ú»¬¼À PSUBB, PSUBW, PSUBD PSUBSB, PSUBSW PSUBUB, PSUBUW
    »ê¼ú°ö¼À PMULL, PMULH
    »ê¼ú°ö¼ÀÀÚ¸®¿Ã¸² PMADD
    ºñ±³ PCMPEQB, PCMPEQW, PCMPEQD
    PCMPGTPB, PCMPGTPW, PCMPGTPD
    º¯È¯ PUNPCKHBW PACKSSWB PACKUSWB
    PUNPCKHWD PACKSSDW
    PUNPCKHDQ
    PUNPCKLBW
    PUNPCKLWD
    PUNPCKLDQ
    ³í¸®¿¬»ê ¹­À½ÀÇ ´ÜÀ§ Quad´ÜÀ§
    PAND
    PANDN
    POR
    PXOR
    PSLLQ
    PSRLQ
    Àü¼Û Double word Àü¼Û Quad word Àü¼Û
    MOVD MOVQ
    MMX »óŸ¦ ºñ¿ò EMMS

1.4. ¹®¼­¸¦ ¸¶Ä¡¸ç

  • ÀÌ ¹®¼­¸¦ ÀÛ¼ºÇϱâ À§ÇØ Intel pentium manualÀ» ÂüÁ¶ÇÏ¿´½À´Ï´Ù. ÀÚ¼¼ÇÑ°ÍÀº IntelÀÇ È¨ÆäÀÌÁö¸¦ ¹æ¹®Çϼ¼¿ä.
  • ÀÌ ¹®¼­ÀÇ ÃÖ±Ù ¹®¼­´Â http://minzkn.pe.ky ¿¡¼­ º¸½Ç¼ö ÀÖ½À´Ï´Ù.


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