RE: malloc problem with H8300

["Dennis Tubbs" <dennistubbs at wageswebworks dot com>]

Mohammad,
As far as I know '_end' is defined in the linker command file.  It is
defined at the very end of the code sections in the memory map.  Malloc
allocates memory off of the heap which typically starts at the end of the
program memory and grows toward the stack, at least for a 68k.  This way the
heap can be defined at link time to make maximum use of the available
memory.

Hope this helps.

Dennis

-----Original Message-----
From: crossgcc-owner@sources.redhat.com
[mailto:crossgcc-owner@sources.redhat.com]On Behalf Of Mohammad Saleem
Sent: Thursday, November 15, 2001 4:28 AM
To: crossgcc@sources.redhat.com
Subject: malloc problem with H8300


Hi all,

I have a question regarding malloc.
I am using H8300 cross compiler and when I try to use malloc in one of
my  c-files I get the following
message:
*******************************
c:/dsp/lib/libc.a(sbrk.o): In function `__sbrk':
sbrk.c:17: undefined reference to `_end'
make: *** [test.srec] Error 1
********************************
When I do search for sbrk.c I get a number of such files.
I don't in which file should I look.
Why I get that and how I can solve this?
Any kind of help in this regard will be appreciated.

Thanks in advance
regards
/Mohammad




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