49b35ff9 |
1 | #!/usr/bin/perl |
2 | |
3 | # endian-swap S records; we need this because the JTAG tools we're using |
4 | # expect the memory image in byte-swapped format |
5 | # |
6 | # Jonathan Westhues, April 2004 |
7 | |
8 | if(@ARGV == 0) { |
9 | die "usage: $0 file-to-endian-swap.s19 > out.s19\n"; |
10 | } |
11 | |
12 | while(<>) { |
13 | chomp; |
14 | |
15 | if(/^S0/) { |
16 | next; |
17 | } |
18 | if(/^S7/) { |
19 | print "$_\n"; |
20 | next; |
21 | } |
22 | |
23 | if(not /^S3(..)(........)(.*)(..)$/) { |
24 | die "bad S record at line $.\n"; |
25 | } |
26 | |
27 | $data = $3; |
28 | $checksum = $4; |
29 | |
30 | print "S3$1$2"; |
31 | while($data =~ m#(..)(..)(..)(..)#g) { |
32 | print "$4$3$2$1"; |
33 | } |
34 | print "$checksum\n"; |
35 | } |