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Altera_Forum
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15 years ago

hello world - strange variables behavior

Hello, I'm new to nios2 developpement and i'm having problems running the simple hello_world exemple : When I lauch this code : int main() { unsigned char i,j,k; printf("Hello from N...
Altera_Forum's avatar
Altera_Forum
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15 years ago

Look at the generated code...

gdb can't really guarantee to give you the values of variables that are in registers.

Although if you aren't compiling with -O2 (you really should use -O2 or -O3) then it is likely that all the expected code (including all the load/stores from stack for the local variables) is actually generated.

Marking global data 'volatile' will force all references in the C source to generate load/store instructions.