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fixup! Disassemble the OS (use a compact representation for repetitive parts), re-assemble and check that the result is identical.

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This commit is contained in:
Georges Dupéron 2018-07-03 15:09:28 +02:00
parent 96727b4241
commit 9917f2dfda
1 changed files with 6 additions and 4 deletions
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10
example-os/Makefile
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@ -9,10 +9,12 @@ os.sh: os.asm ../deploy-screenshots Makefile
chmod a+x $@
os.ndisasm.disasm: os.sh Makefile
ndisasm $< \
| uniq -s 8 -c \
| sed -r -e 's/\s*1 //; t; s/\s*([0-9]+) ([^ ]+\s+[^ ]+\s+)/\2times \1 /' \
| sed -r -e 's/([^ ]+\s+[0-9A-F]{4}\s+jz) 0x/\1 short 0x/' > $@
(echo "[BITS 16]"; \
echo "[ORG 0x7c00]"; \
ndisasm -o 0x7C00 $< \
| uniq -s 8 -c \
| sed -r -e 's/\s*1 //; t; s/\s*([0-9]+) ([^ ]+\s+[^ ]+\s+)/\2times \1 /' \
| sed -r -e 's/([^ ]+\s+[0-9A-F]{4}\s+jz) 0x/\1 short 0x/') > $@
# The last sed line just above fixes an issue with ndisasm
# (it fails to annotate the jz with short).