21 lines
709 B
Bash
Executable File
21 lines
709 B
Bash
Executable File
#!/bin/sh
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set -e
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in=$1
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out=$2
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# Add -s 0x1234 to te ndisasm command-line to specify that there is an
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# instruction starting at 0x1234. Use this when ndisasm misinterprets
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# some instructions due to db.
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skip="-s 0x16F40C -s 0x16F415 -s 0x16FBD0"
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for i in `seq 0 255`; do skip="$skip -s 0x7e$(printf %02x $i)"; done
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(echo "[BITS 16]"; \
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echo "[ORG 0x7c00]"; \
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ndisasm -s 0x7c78 $skip -o 0x7C00 -b 16 "$in" \
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| uniq -s 8 -c \
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| sed -r -e 's/^\s*1 //; t; s/^\s*([0-9]+) ([^ ]+\s+[^ ]+\s+)/\2times \1 /' \
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| sed -r -e 's/([^ ]+\s+[0-9A-F]{4}\s+j[^ ]+ )0x/\1short 0x/') > "$out"
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# The last sed line just above fixes an issue with ndisasm
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# (it fails to annotate jz and jnc (and possibly other) with short).
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