spl: spl_relocate_stack_gd: Do not unnecessarily clear bss

[J-u-boot.git] / common / dlmalloc.c

diff --git a/common/dlmalloc.c b/common/dlmalloc.c
index d87834df67f4f94d6f71951be8880e80a28fb904..b5bb05191c240a46d0fb944356418c45f3f8ea4e 100644 (file)
--- a/common/dlmalloc.c
+++ b/common/dlmalloc.c
@@ -1533,8 +1533,11 @@ void mem_malloc_init(ulong start, ulong size)
        mem_malloc_end = start + size;
        mem_malloc_brk = start;
 
-       memset((void *)mem_malloc_start, 0, size);
-
+       debug("using memory %#lx-%#lx for malloc()\n", mem_malloc_start,
+             mem_malloc_end);
+#ifdef CONFIG_SYS_MALLOC_CLEAR_ON_INIT
+       memset((void *)mem_malloc_start, 0x0, size);
+#endif
        malloc_bin_reloc();
 }
 
@@ -2181,17 +2184,8 @@ Void_t* mALLOc(bytes) size_t bytes;
   INTERNAL_SIZE_T nb;
 
 #ifdef CONFIG_SYS_MALLOC_F_LEN
-       if (gd && !(gd->flags & GD_FLG_RELOC)) {
-               ulong new_ptr;
-               void *ptr;
-
-               new_ptr = gd->malloc_ptr + bytes;
-               if (new_ptr > gd->malloc_limit)
-                       panic("Out of pre-reloc memory");
-               ptr = map_sysmem(gd->malloc_base + gd->malloc_ptr, bytes);
-               gd->malloc_ptr = ALIGN(new_ptr, sizeof(new_ptr));
-               return ptr;
-       }
+       if (gd && !(gd->flags & GD_FLG_FULL_MALLOC_INIT))
+               return malloc_simple(bytes);
 #endif
 
   /* check if mem_malloc_init() was run */
@@ -2459,7 +2453,7 @@ void fREe(mem) Void_t* mem;
 
 #ifdef CONFIG_SYS_MALLOC_F_LEN
        /* free() is a no-op - all the memory will be freed on relocation */
-       if (!(gd->flags & GD_FLG_RELOC))
+       if (!(gd->flags & GD_FLG_FULL_MALLOC_INIT))
                return;
 #endif
 
@@ -2615,7 +2609,7 @@ Void_t* rEALLOc(oldmem, bytes) Void_t* oldmem; size_t bytes;
   if (oldmem == NULL) return mALLOc(bytes);
 
 #ifdef CONFIG_SYS_MALLOC_F_LEN
-       if (!(gd->flags & GD_FLG_RELOC)) {
+       if (!(gd->flags & GD_FLG_FULL_MALLOC_INIT)) {
                /* This is harder to support and should not be needed */
                panic("pre-reloc realloc() is not supported");
        }
@@ -2954,9 +2948,11 @@ Void_t* cALLOc(n, elem_size) size_t n; size_t elem_size;
 
 
   /* check if expand_top called, in which case don't need to clear */
+#ifdef CONFIG_SYS_MALLOC_CLEAR_ON_INIT
 #if MORECORE_CLEARS
   mchunkptr oldtop = top;
   INTERNAL_SIZE_T oldtopsize = chunksize(top);
+#endif
 #endif
   Void_t* mem = mALLOc (sz);
 
@@ -2967,7 +2963,7 @@ Void_t* cALLOc(n, elem_size) size_t n; size_t elem_size;
   else
   {
 #ifdef CONFIG_SYS_MALLOC_F_LEN
-       if (!(gd->flags & GD_FLG_RELOC)) {
+       if (!(gd->flags & GD_FLG_FULL_MALLOC_INIT)) {
                MALLOC_ZERO(mem, sz);
                return mem;
        }
@@ -2983,12 +2979,14 @@ Void_t* cALLOc(n, elem_size) size_t n; size_t elem_size;
 
     csz = chunksize(p);
 
+#ifdef CONFIG_SYS_MALLOC_CLEAR_ON_INIT
 #if MORECORE_CLEARS
     if (p == oldtop && csz > oldtopsize)
     {
       /* clear only the bytes from non-freshly-sbrked memory */
       csz = oldtopsize;
     }
+#endif
 #endif
 
     MALLOC_ZERO(mem, csz - SIZE_SZ);
@@ -3263,6 +3261,17 @@ int mALLOPt(param_number, value) int param_number; int value;
   }
 }
 
+int initf_malloc(void)
+{
+#ifdef CONFIG_SYS_MALLOC_F_LEN
+       assert(gd->malloc_base);        /* Set up by crt0.S */
+       gd->malloc_limit = CONFIG_SYS_MALLOC_F_LEN;
+       gd->malloc_ptr = 0;
+#endif
+
+       return 0;
+}
+
 /*
 
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