gonzui

    1: /*
    2:  *----------------------------------------------------------------------
    3:  *    T-Kernel 2.0 Software Package
    4:  *
    5:  *    Copyright 2011 by Ken Sakamura.
    6:  *    This software is distributed under the latest version of T-License 2.x.
    7:  *----------------------------------------------------------------------
    8:  *
    9:  *    Released by T-Engine Forum(http://www.t-engine.org/) at 2011/05/17.
   10:  *    Modified by TRON Forum(http://www.tron.org/) at 2015/06/01.
   11:  *
   12:  *----------------------------------------------------------------------
   13:  */
   14: 
   15: /*
   16:  *      @(#)mem.h (libtk)
   17:  *
   18:  *      Memory local allocation library
   19:  */
   20: 
   21: #include <basic.h>
   22: #include <sys/memalloc.h>
   23: #include <libstr.h>
   24: 
   25: /*
   26:  * Minimum fragmentation unit
   27:  *      Since memory is allocated in ROUNDSZ units,
   28:  *      the lower three bits of the address must be 0.
   29:  *      These low three bits are used in the flag in the area queue.
   30:  */
   31: #define ROUNDSZ         ( sizeof(QUEUE) )      /* 8 byte */
   32: #define ROUND(sz)       ( ((UINT)(sz) + (ROUNDSZ-1)) & ~(ROUNDSZ-1) )
   33: 
   34: /* Minimum fragment size */
   35: #define MIN_FRAGMENT    ( _mem_minfragment )
   36: 
   37: /*
   38:  * Flag that uses the lower bits of the area queue prev
   39:  */
   40: #define AREA_USE        0x00000001U    /* In use */
   41: #define AREA_TOP        0x00000002U    /* Top of page */
   42: #define AREA_END        0x00000004U    /* End of page */
   43: #define AREA_MASK       0x00000007U
   44: 
   45: #define setAreaFlag(q, f)     ( (q)->prev = (QUEUE*)((UW)(q)->prev |  (UW)(f)) )
   46: #define clrAreaFlag(q, f)     ( (q)->prev = (QUEUE*)((UW)(q)->prev & ~(UW)(f)) )
   47: #define chkAreaFlag(q, f)     ( ((UW)(q)->prev & (UW)(f)) != 0 )
   48: 
   49: #define Mask(x)         ( (QUEUE*)((UW)(x) & ~AREA_MASK) )
   50: #define Assign(x, y)    ( (x) = (QUEUE*)(((UW)(x) & AREA_MASK) | (UW)(y)) )
   51: 
   52: /*
   53:  * Area size
   54:  */
   55: #define AreaSize(aq)    ( (VB*)(aq)->next - (VB*)((aq) + 1) )
   56: #define FreeSize(fq)    ( (VB*)((fq) - 1)->next - (VB*)(fq) )
   57: 
   58: /*
   59:  * Memory allocation check function
   60:  */
   61: IMPORT BOOL (*_mem_chkalloc)( void *ptr, int mode, MACB *macb );