Error message while trying to deploy a simple hello_world application

hey

I used the Altera debug client and the above worked. but When i used Nios II IDE i get this error

/cygdrive/c/altera/90/nios2eds/components/altera_hal/HAL/inc/sys/alt_errno.h:81: Unable to reach errno (at 0x00001020) from the global pointer (at 0x0000a25c) because the offset (-37436) is out of the allowed range, -32678 to 32767.

What could be the reason?

Rohini

Rohini,

Okay, it's easy enough to figure out the error message...the global pointer is at $A25C and the errno is at $1020. Subtracting one from the other gives 37436 base 10 so it is out of the range for the offset which is +/- value for 16 bits using signed numbers. I don't know how to increase the offset but if you could change the location of the Global pointer somehow you'd eliminate this problem. Most likely you had nothing to do with it as these programs take off and compile themselves as the designer of the compiler saw fit. You might try making your overall program smaller by cutting out a feature. If you've run out of guesses; you could try mine. A lot of times at my present level of understanding...if it doesn't work, I try a few things then give up. Say, have you set the base addresses before you downloaded the SOPC?

i am using

#define Switches (volatile char *) 0x00003000

#define LEDs (char *) 0x00003010

int main(void)

{

while (1)

{

*LEDs = *Switches;

}

return(1);

}

which is same base addresses as assigned by the SOPC builder

1. I ran this application program using Altera Debug client and it was successful. I mean i could use switches t manipulate the LED's I took this program from the tutorials which come with the CD(DE2 board)

2. When i use NIOS II IDE i get

Linking light.elf...

/cygdrive/c/altera/90/nios2eds/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc/nios2-elf/3.4.6/../../../../nios2-elf/bin/ld: region onchip_memory2_0 is full (light.elf section .text). Region needs to be 2932 bytes larger.

/cygdrive/c/altera/90/nios2eds/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc/nios2-elf/3.4.6/../../../../nios2-elf/bin/ld: region onchip_memory2_0 is full (light.elf section .rwdata). Region needs to be 664 bytes larger.

/cygdrive/c/altera/90/nios2eds/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc/nios2-elf/3.4.6/../../../../nios2-elf/bin/ld: section .rodata [00001020 -> 00001053] overlaps section .exceptions [00001020 -> 000011c7]

/cygdrive/c/altera/90/nios2eds/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc/nios2-elf/3.4.6/../../../../nios2-elf/bin/ld: section .rwdata [00001054 -> 00002297] overlaps section .exceptions [00001020 -> 000011c7]

/cygdrive/c/altera/90/nios2eds/bin/nios2-gnutools/H-i686-pc-cygwin/bin/../lib/gcc/nios2-elf/3.4.6/../../../../nios2-elf/bin/ld: section .bss [00001020 -> 00001123] overlaps section .exceptions [00001020 -> 000011c7]

/cygdrive/c/sopc_tutorial/software/light_syslib/Debug/liblight_syslib.a(alt_dev_llist_insert.o)(.text+0xdc): In function `alt_get_errno':

/cygdrive/c/altera/90/nios2eds/components/altera_hal/HAL/inc/sys/alt_errno.h:81: Unable to reach errno (at 0x00001020) from the global pointer (at 0x0000a25c) because the offset (-37436) is out of the allowed range, -32678 to 32767.

collect2: ld returned 1 exit status

make: *** [light.elf] Error 1

Rohini,

What I'd do based on those error messages is go back to Quartus, open up the SOPC builder and increase my on-chip memory by 4K. That should work but I remember another program when I tried that where it created other errors. Thinking about that, I probably should have reset the base address before running it. Hey, you're helping me fix my designs...

Best,

I increased the on chip memory ....i did auto assign base address.

But i get this when i try to recompile in the quartus

Critical Warning: Memory depth (2048) in the design file differs from memory depth (3072) in the Memory Initialization File "onchip_memory2_0.hex" -- truncated remaining initial content value to fit RAM