Hello,
I am working with a design that includes:
- Nios II processor version "e"
- On chip memory dedicated for data and instructions
I used the SBT to write a function in assembly langage. This function is called in main:
void function() __attribute__((section(".function")));
int main()
{
alt_printf("Hello function\n\r");
function();
return 0;
}
Actually, I added to the linker file a section ".function" that will contain the code of the function. I have defined it after the ".text" section.
.text :
{
.
.
.
} > memory = 0x3a880100 /* NOP instruction (always in big-endian byte ordering) */
.function : AT ( LOADADDR (.text) + SIZEOF (.text) )
{
PROVIDE (function_mem_start = ABSOLUTE(.)); *(.function)
. = ALIGN(4);
PROVIDE (function_mem_end = ABSOLUTE(.));
} > memory
The problem is that when I execute my code, it never runs the "function()" code. Each time the nios reaches "function", it restarts the execution of the program from the beginning. Hence, I get an infinite "Hello function" printed in the console. However when I delete "__attribute__((section(".function")))" from the main program, the program is executed correctly and my function code is saved in the ".text" section.
My question is, why I can't execute a program from a section other than ".text" and what should I do to make it possible?
Thank you,
