+ mbinptr *p = &av_[2];
+ size_t i;
+
+ for (i = 2; i < ARRAY_SIZE(av_); ++i, ++p)
+ *p = (mbinptr)((ulong)*p + gd->reloc_off);
+}
+#else
+static inline void malloc_bin_reloc(void) {}
+#endif
+
+ulong mem_malloc_start = 0;
+ulong mem_malloc_end = 0;
+ulong mem_malloc_brk = 0;
+
+void *sbrk(ptrdiff_t increment)
+{
+ ulong old = mem_malloc_brk;
+ ulong new = old + increment;
+
+ /*
+ * if we are giving memory back make sure we clear it out since
+ * we set MORECORE_CLEARS to 1
+ */
+ if (increment < 0)
+ memset((void *)new, 0, -increment);
+
+ if ((new < mem_malloc_start) || (new > mem_malloc_end))
+ return (void *)MORECORE_FAILURE;
+
+ mem_malloc_brk = new;
+
+ return (void *)old;
+}
+
+void mem_malloc_init(ulong start, ulong size)
+{
+ mem_malloc_start = start;
+ mem_malloc_end = start + size;
+ mem_malloc_brk = start;
+
+ memset((void *)mem_malloc_start, 0, size);
+
+ malloc_bin_reloc();