Hi,
I unzipped the file and run make all. Here is the output:
--- Assembling BootReset.S ---
or32-elf-gcc -g -c -Wunknown-pragmas -mhard-mul -msoft-div -msoft-float -o BootReset.o BootReset.S

--- Compiling main.c ---
or32-elf-gcc -g -c -Wunknown-pragmas -mhard-mul -msoft-div -msoft-float -o main.o main.c

--- Compiling uart.c ---
or32-elf-gcc -g -c -Wunknown-pragmas -mhard-mul -msoft-div -msoft-float -o uart.o uart.c

--- Linking ---
or32-elf-ld -Map System.map -Bstatic BootReset.o main.o uart.o --stats -Tram.ld -e 0x01000100 -o echo.or32
BootReset.o: In function `_reset':
(.vectors+0x88): undefined reference to `_Start'
BootReset.o: In function `_reset':
(.vectors+0x8c): undefined reference to `_Start'
BootReset.o: In function `JUMP':
(.vectors+0x724): undefined reference to `_external_exeption'
make: *** [echo.or32] Error 1


Has anybody seen this before?

Alonzo.

Which file are you referring to?

I am talking about the demo_or32_sw.zip file referenced in the "debugging of physical openrisc targets" page at opencores. The file can be downloaded also from http://opencores.org/download,or1k

alnz.

hi alonzo,

Looks like it is obsolete code that needs rewriting. It seems like all the dates on the download page have been reset, so I have no idea how old this is (it could be 10 years).

It seems that the code predates the latest GCC compiler developments, which dropped the use of underscore before global names. You could try finding the names being complained about in .S files and removing the leading underscore.

These days it is all much easier. Try a trivial program like.

#include <stdio.h>

int
main (int   argc,
      char *argv[])
{
  printf ("Hello World\n");
  return  0;

}	/* main () */

Compile it with

or32-elf-gcc hello.c -o hello

Run it with

or32-elf-sim --memory=8M hello

HTH

Jeremy

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Hi Jeremy,
I just wanted to share with you that I followed your recommendation. I looked through the files and change the names that used the underscore in front. This fixed the compilation of the code. Then, I still had problems using the code to demo the debugger. I would successfully download the code and start the core but nothing would show up in the console. I figured that the demo_or32_sw had 25MHz as clock frequency set in its .h file. The FPGA was running at 50MHz. Changed that and it worked fine. Maybe this info will help somebody else.
Thank you for your help,
Alonzo.

Hi Alonzo,

Glad this works. Would you update the Wiki to help others who hit this problem in the future.

Thanks,

Jeremy