On Nov 14, 2010, at 7:18 AM, terry wrote:
在 2010-11-13六的 10:24 -0600，Kumar Gala写道：
On Nov 12, 2010, at 9:43 PM, terry wrote:
by the way,I cann't find the prototype of malloc in the whole project,it seems that it is encapsulated in some libs.
It's in common/malloc.c. There's weird preprocessor renaming going on, so it's called mALLOc in that file, but it shows up as malloc in the binary.
Thanks very much for your carefully instruction.
-Scott
I haven't been following this thread, but just debugging a malloc/nand "corruption" issue myself. I'm going to start a new thread on the subject since its more related to malloc. However can you try the following and see what happens:
diff --git a/include/malloc.h b/include/malloc.h
I'm sorry, but I cann't understand you clearly. what do you mean by writting this? compare two different versions? if so, which two version?
index 3e145ad..19f0f0b 100644 --- a/include/malloc.h +++ b/include/malloc.h @@ -850,7 +850,7 @@ extern Void_t* sbrk(); #endif
#ifndef MORECORE_CLEARS -#define MORECORE_CLEARS 1 +#define MORECORE_CLEARS 0 #endif
#endif /* INTERNAL_LINUX_C_LIB */
I read the malloc.h file in u-boot-2010.09. it's content like below: #ifdef INTERNAL_LINUX_C_LIB 819 820 #if __STD_C 821 822 Void_t * __default_morecore_init (ptrdiff_t); 823 Void_t *(*__morecore)(ptrdiff_t) = __default_morecore_init; 824 825 #else 826 827 Void_t * __default_morecore_init (); 828 Void_t *(*__morecore)() = __default_morecore_init; 829 830 #endif /* __STD_C */ 831 832 #define MORECORE (*__morecore) 833 #define MORECORE_FAILURE 0 834 #define MORECORE_CLEARS 1
#else /* INTERNAL_LINUX_C_LIB */ 837 838 #if __STD_C 839 extern Void_t* sbrk(ptrdiff_t); 840 #else 841 extern Void_t* sbrk(); 842 #endif 843 844 #ifndef MORECORE 845 #define MORECORE sbrk 846 #endif 847 848 #ifndef MORECORE_FAILURE 849 #define MORECORE_FAILURE -1 850 #endif 851 852 #ifndef MORECORE_CLEARS 853 #define MORECORE_CLEARS 1 854 #endif 855 856 #endif /* INTERNAL_LINUX_C_LIB */ Do you mean that I should change MORECORE_CLEARS from 1 to 0?
Yes, I was asking you to modify include/malloc.h to change MORECORE_CLEARS from 1 to 0 and see if that helps your issue. You need to modify the one on lines 853.
- k