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Moving stack from TCM to external DDR2 SDRAM

Kevin Schaffer
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  • Note: This was originally posted on 22nd November 2011 at http://forums.arm.com

    One more question:  In a given function, does SP point to the highest used address on the stack?  Or does it point to, say, the first used address of the local function, and, if the local function used, say, 12 bytes, SP, SP - 4, and SP - 8 are all used, so if I was looking for the address of the first *unused* byte (4-byte) location, I'd have to look at SP - 12?
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  • Note: This was originally posted on 22nd November 2011 at http://forums.arm.com

    One more question:  In a given function, does SP point to the highest used address on the stack?  Or does it point to, say, the first used address of the local function, and, if the local function used, say, 12 bytes, SP, SP - 4, and SP - 8 are all used, so if I was looking for the address of the first *unused* byte (4-byte) location, I'd have to look at SP - 12?
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