Target/host big/small endianness and bit reversal is actually somewhat of a red
herring in this discussion.

jtag_add_dr_scan() scans an array of bits in/out. These bits are represented
as an array of integers where lsb is shifted out first. lsb vs. msb is
unambigious
w.r.t. host endiannes/bit order. Once an int in that array is
exhausted, the next
int is shifted out lsb first. The total # of bits to shift out is
num_fields. Ditto
for in_value.

I'm suggesting that 32 bits is a more natural fit for openocd code than 8.

host / target big/small endian and bit reversal does not enter into the picture
for the 32 or 8 bit version of jtag_add_dr_scan().

?




-- 
Øyvind Harboe
Embedded software and hardware consulting services
http://consulting.zylin.com
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