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[avr-gcc-list] introducing a new section in data memory

From: Parthasaradhi Nayani
Subject: [avr-gcc-list] introducing a new section in data memory
Date: Thu, 19 Feb 2009 21:16:46 -0800 (PST)

Hello all,

I sent a mail on the subject but it seems to have got lost   and therefore posting again

I need to have a buffer of about 256 bytes starting at a page boundary in the ram of Mega8. To get this I introduced a new section and assigned it an address in makefile. I defined variables, to test, using attribute section. However when I try to debug the code I see the variables are allotted memory locations other than specified in the section?

My makefile has the following statement

LDFLAGs = -wl,--section-start=.test=0x800100

My .C file has the following statements

unsigned char mem3 __attribute__ ((section(".test")));
int mem5 __attribute__ ((section(".test")));

I have also noticed, if I declare a global variable I get overlap error. Please help me solve this problem. Thank you.


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