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Annotation of uae/src/md-amiga/support.c, revision 1.1

1.1     ! root        1:  /* 
        !             2:   * UAE - The Un*x Amiga Emulator
        !             3:   * 
        !             4:   * Miscellaneous machine dependent support functions and definitions
        !             5:   *
        !             6:   * Copyright 1996 Samuel Devulder
        !             7:   */
        !             8: 
        !             9: #include "sysconfig.h"
        !            10: #include "sysdeps.h"
        !            11: 
        !            12: #include "config.h"
        !            13: #include "options.h"
        !            14: #include "machdep/m68k.h"
        !            15: 
        !            16: struct flag_struct regflags;
        !            17: 
        !            18: /* Not used anyway */
        !            19: int fast_memcmp(const void *foo, const void *bar, int len)
        !            20: {
        !            21:     return memcmp(foo, bar, len);
        !            22: }
        !            23: 
        !            24: int memcmpy(void *foo, const void *bar, int len)
        !            25: {
        !            26:     /*    if(((int)foo)&1 || ((int)foo)&1) goto notaligned;
        !            27:      * 
        !            28:      */
        !            29:     while((((short)len) -= 4) >= 0)
        !            30:        if(*((long*)foo)++ != *((long*)bar)++)
        !            31:            goto diff4;
        !            32:     ((short)len) += 4;
        !            33:     
        !            34:     notaligned:
        !            35:     while(((short)len)--) {  /* ((short)len)-- will produce dbra => great ! */
        !            36:        if (*((char*)foo)++ != *((char*)bar)++) { ((char*)foo)[-1] = ((char*)bar)[-1];
        !            37:            goto diff1;
        !            38:        }
        !            39:     }
        !            40:     return 0;
        !            41:     
        !            42:     diff4:
        !            43:     ((long*)foo)[-1] = ((long*)bar)[-1];
        !            44:     while((((short)len)-=4) >= 0)
        !            45:        *((long*)foo)++ = *((long*)bar)++;
        !            46:     ((short)len) += 4;
        !            47:     
        !            48:     diff1:
        !            49:     while(((short)len)--)
        !            50:        *((char*)foo)++ = *((char*)bar)++;
        !            51:     return 1;
        !            52:     
        !            53: }

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