Arm-linux-gcc malloc get failure while arm-elf-gcc ok

hi there

after modifing some codes(forget what's the codes:() arm-elf-gcc also get malloc failure,I have to think about my program has something wrong

actually malloc have got failure in the lib_arm/board.c:

a malloc will trigger *sbrk twice(why?)

test code in start_armboot()

...

void *testptr;

testptr=malloc(10);

...

in the void *sbrk (ptrdiff_t increment)
{
ulong old = mem_malloc_brk;
ulong new = old + increment;

if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
return (NULL);
}
mem_malloc_brk = new;

return ((void *) old);
}

I print out the debug information:

1st trigger:

increment: a2e2e4e?(so big?)

old: c6dfc00

new: 169c2a4e

mem_malloc_start: c6dfc00

mem_malloc_end: c700000

2nd:

increment: 1b2

old: c6dfc00

new: c6dfdb2

mem_malloc_start: c6dfc00

mem_malloc_end: c700000

seems the 2nd is ok

but testptr still =0

*****************

in the cpu/s3c44b0/start.S I create stack like that:

stack_setup:

ldr r0,=0xc700000   /* upper 128 KiB: relocated uboot   */
sub r0, r0, #CFG_MALLOC_LEN /* malloc area 1024+128*1024 =1227204bytes                   */
sub r0, r0, #CFG_GBL_DATA_SIZE /* bdinfo   128                     */
sub sp, r0, #12  /* leave 3 words for abort-stack    */

i think it should be ok

******************

regards,

rui

From: u-boot-users-bounces@lists.sourceforge.net [mailto:u-boot-users-bounces@lists.sourceforge.net]
Sent: Saturday, January 27, 2007 12:11 PM
To: u-boot-users@lists.sourceforge.net
Subject: [U-Boot-Users] Arm-linux-gcc malloc get failure while arm-elf-gcc ok

hi there

I wonder if I am the first one to get this problem

In common\lists.c

Handle NewHandle (unsigned int numBytes)
{
void *memPtr;
HandleRecord *hanPtr;

memPtr = calloc (numBytes, 1);
hanPtr = (HandleRecord *) calloc (sizeof (HandleRecord), 1);

Debug("memPtr:%d hanPtr:%d\n",memPtr ,hanPtr ); //arm-linux-gcc get 0 for both of the Ptr while arm-elf-gcc can malloc successfully

        if (hanPtr && (memPtr || numBytes == 0)) {
                hanPtr->ptr = memPtr;
                hanPtr->size = numBytes;
                return (Handle) hanPtr;
        } else {
                free (memPtr);
                free (hanPtr);
                return NULL;
        }

}

Arm-elf-gcc is 3.4.0
Arm-linux-gcc is 3.3.2 (heard there are most problems in this version??)

Regards
Zhou rui