u-boot/common/dlmalloc.c

316     The P (PREV_INUSE) bit, stored in the unused low-order bit of the
413 /* size field is or'ed with PREV_INUSE when previous adjacent chunk in use */
415 #define PREV_INUSE 0x1
423 #define SIZE_BITS (PREV_INUSE|IS_MMAPPED)
428 #define next_chunk(p) ((mchunkptr)( ((char*)(p)) + ((p)->size & ~PREV_INUSE) ))
450 ((((mchunkptr)(((char*)(p))+((p)->size & ~PREV_INUSE)))->size) & PREV_INUSE)
454 #define prev_inuse(p)  ((p)->size & PREV_INUSE)
463 ((mchunkptr)(((char*)(p)) + ((p)->size & ~PREV_INUSE)))->size |= PREV_INUSE
466 ((mchunkptr)(((char*)(p)) + ((p)->size & ~PREV_INUSE)))->size &= ~(PREV_INUSE)
471  (((mchunkptr)(((char*)(p)) + (s)))->size & PREV_INUSE)
474  (((mchunkptr)(((char*)(p)) + (s)))->size |= PREV_INUSE)
477  (((mchunkptr)(((char*)(p)) + (s)))->size &= ~(PREV_INUSE))
492 #define set_head_size(p, s)   ((p)->size = (((p)->size & PREV_INUSE) | (s)))
789   INTERNAL_SIZE_T sz = p->size & ~PREV_INUSE;
810   INTERNAL_SIZE_T sz = p->size & ~PREV_INUSE;
875   INTERNAL_SIZE_T sz = p->size & ~PREV_INUSE;
1154     set_head(top, top_size | PREV_INUSE);
1186     set_head(top, top_size | PREV_INUSE);
1197 	set_head(top, PREV_INUSE); /* will force null return from malloc */
1205 	SIZE_SZ|PREV_INUSE;
1207 	SIZE_SZ|PREV_INUSE;
1400       set_head(victim, nb | PREV_INUSE);
1402       set_head(remainder, remainder_size | PREV_INUSE);
1465 	    set_head(victim, nb | PREV_INUSE);
1468 	    set_head(remainder, remainder_size | PREV_INUSE);
1540   set_head(victim, nb | PREV_INUSE);
1542   set_head(top, remainder_size | PREV_INUSE);
1616   sz = hd & ~PREV_INUSE;
1625     if (!(hd & PREV_INUSE))                    /* consolidate backward */
1633     set_head(p, sz | PREV_INUSE);
1644   if (!(hd & PREV_INUSE))                    /* consolidate backward */
1670   set_head(p, sz | PREV_INUSE);
1807 	  set_head(top, (newsize - nb) | PREV_INUSE);
1854 	    set_head(top, (newsize - nb) | PREV_INUSE);
1922     set_head(remainder, remainder_size | PREV_INUSE);
2079     set_head(newp, newsize | PREV_INUSE);
2096     set_head(remainder, remainder_size | PREV_INUSE);
2374 	  set_head(top, top_size | PREV_INUSE);
2383 	set_head(top, (top_size - extra) | PREV_INUSE);