can't build project - strange memory problem

Altera_Forum · ‎05-12-2010

Hello,

i got a strage error.

i'm trying to built a simple helloworld program.

when i compile i got this:

**** Build of configuration Nios II for project HelloWorld2 ****
make all 
Info: Building ../HelloWorld2_bsp
make --no-print-directory -C ../HelloWorld2_bsp
Info: Linking HelloWorld2.elf
nios2-elf-g++  -T'../HelloWorld2_bsp/linker.x' -msys-crt0='../HelloWorld2_bsp/obj/HAL/src/crt0.o' -msys-lib=hal_bsp -L../HelloWorld2_bsp   -Wl,-Map=HelloWorld2.map   -O0 -g -Wall   -mno-hw-div -mno-hw-mul -mno-hw-mulx  -o HelloWorld2.elf obj/hello_world.o -lm 
/cygdrive/c/altera/91/nios2eds/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc/nios2-elf/3.4.6/../../../../nios2-elf/bin/ld: region onchip_memory_4kB_RAM is full (HelloWorld2.elf section .text). Region needs to be 42508 bytes larger.
/cygdrive/c/altera/91/nios2eds/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc/nios2-elf/3.4.6/../../../../nios2-elf/bin/ld: region onchip_memory_4kB_RAM is full (HelloWorld2.elf section .rwdata). Region needs to be 3892 bytes larger.
/cygdrive/c/altera/91/nios2eds/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc/nios2-elf/3.4.6/../../../../nios2-elf/bin/ld: section .rodata  overlaps section .exceptions 
/cygdrive/c/altera/91/nios2eds/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc/nios2-elf/3.4.6/../../../../nios2-elf/bin/ld: section .rwdata  overlaps section .text 
/cygdrive/c/altera/91/nios2eds/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc/nios2-elf/3.4.6/../../../../nios2-elf/bin/ld: section .bss  overlaps section .exceptions 
/cygdrive/c/altera/91/nios2eds/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc/nios2-elf/3.4.6/../../../../nios2-elf/lib/mno-hw-mul/libc.a(sbrkr.o)(.text+0x14): In function `_sbrk_r':
/build/nios2eds-gnutools-win32-9.1/bin/nios2-gnutools/src/newlib/newlib/libc/reent/sbrkr.c:59: Unable to reach errno (at 0x00001020) from the global pointer (at 0x0000aec8) because the offset (-40616) is out of the allowed range, -32678 to 32767.
collect2: ld returned 1 exit status
make: ***  Error 1

this seems like the compiler thinks there is no memory at all.

In the SOPC-Builder i added 4K of RAM to the CPU and som I/Os as well as a JTAG all on s1.

In Quartus i can compile it all and it seems to work, but when i use this nios.inf-file to build the helloworld projekt the memory seems to be gone?

any ideas??

thanks in advance

Altera_Forum · ‎05-12-2010

The C library bits needed for the 'simple' programs are not completely trivial and need about 56k to run.

It is all down to the use of 'stdio' files to write diagnostics to the JTAG console - as well as printf() these drag in malloc() (etc) and stuff to call fclose() on exit.

For a small embedded system none of these are necessary - and the final product won't have the JTAG active.

Altera_Forum · ‎05-12-2010

Ok, thanks, i enlarged the memory to 64K and now it works.