Hi,
I have a large C application in which I would like to write one
of the routines in assembly to improve performance.
uint8_t permsTable[128]; // This is a global variable.
# The following is the assembly routine.
# The offset into permsTable is present in the register pair r30:r31
# I am trying to subtract the negative value of the permsTable from
the offset.
permsCheck:
SUBI r30, lo8(-permsTable)
SBCI r31, hi8(-permsTable)
However, I am getting a syntax error with the above operation.
I would appreciate if anyone could tell me how to perform the above
operation.
I have seen the C compiler generate such code.
Thanks,
-Ram
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