Boot problem : change exception address

Hello

I have some problem with NIOS software.

I made a boot loader using on chip memory. Reset and application code are set in on-chip memory.

Application is downloaded in SDRAM and when the transfert is done, there is a jump to the start address of my application.

If I use a programm without interrupt, there is no problem.

Whereas, when I want to use a programm using interrupt, I have some problem.

First my binary file is too big, more than 32 MB. To generate my binary, i Use the following commands :

[SOPC Builder]$ nios2-elf-objcopy -R.entry -O binary hello_world_0.elf test_oot_v7.bin

I try to modify the exception , in the linker script, I remplace

PROVIDE (__ram_exceptions_start = ABSOLUTE(.));

. = ALIGN(0x20);

by

PROVIDE (__ram_exceptions_start = 0x02007020);

. = ALIGN(0x20);

*(.irq)

and I generate my binary as follow

[SOPC Builder]$ nios2-elf-objcopy -R.entry -O binary --change-section-lma .exce

ptions=0x02008020 hello_world_0.elf test_boot_v7.bin

So my binary file is smaller, but when I load this application on Sdram, after booting, the interrupts are not treated.

I suppose that my change is not affective.

How can I do to change exceptions address?

Thanks for all.