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Annotation of uae/src/md-ppc-gcc/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 Bernd Schmidt
        !             7:   */
        !             8: 
        !             9: #include "sysconfig.h"
        !            10: #include "sysdeps.h"
        !            11: 
        !            12: #include "config.h"
        !            13: #include "options.h"
        !            14: #include "events.h"
        !            15: #include "machdep/m68k.h"
        !            16: 
        !            17: struct flag_struct regflags;
        !            18: 
        !            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:        while ((len -= 4) >= 0)
        !            27:                if(*((long*)foo)++ != *((long*)bar)++)
        !            28:                        goto diff4;
        !            29:        len += 4;
        !            30:     
        !            31:        while (len--)
        !            32:                if (*((char*)foo)++ != *((char*)bar)++) {
        !            33:                        ((char*)foo)[-1] = ((char*)bar)[-1];
        !            34:                        goto diff1;
        !            35:                }
        !            36:        return 0;
        !            37: 
        !            38: diff4:
        !            39:        ((long*)foo)[-1] = ((long*)bar)[-1];
        !            40:        while ((len -= 4) >= 0)
        !            41:                *((long*)foo)++ = *((long*)bar)++;
        !            42:        len += 4;
        !            43: 
        !            44: diff1:
        !            45:        while (len--)
        !            46:                *((char*)foo)++ = *((char*)bar)++;
        !            47:        return 1;
        !            48: }
        !            49: 
        !            50: static volatile frame_time_t last_time, best_time;
        !            51: static volatile int loops_to_go;
        !            52: 
        !            53: void machdep_init (void)
        !            54: {
        !            55:     rpt_available = 1;
        !            56:     fprintf(stderr, "Calibrating delay loop.. ");
        !            57:     fflush(stderr);
        !            58:     loops_to_go = 5;
        !            59: 
        !            60:     sync();
        !            61:     last_time = read_processor_time();
        !            62:     usleep(loops_to_go * 1000000);
        !            63:     best_time = read_processor_time()-last_time;
        !            64:     sync();
        !            65: 
        !            66:     vsynctime = best_time / (50*loops_to_go);
        !            67:     fprintf(stderr,"ok - %d\n",best_time/loops_to_go);
        !            68:     last_time = read_processor_time();
        !            69:     best_time = read_processor_time()-last_time;
        !            70: }
        !            71: 
        !            72: 

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