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#!/bin/bash
# Собирает болваночный bootx64.efi (PE32+) ПОРТИРОВАННЫМ тулчейном 6a/6c/6l.
# Предварительно: ./fetch_ref.sh (достаёт pe64.s/efi.h/mem.h из 9legacy).
# Требует: BINDIR с 6a/6c/6l (по умолч. ../bin) и PLAN9SRC (плановские include).
set -e
cd "$(dirname "$0")"
BINDIR="${BINDIR:-$PWD/../bin}"
: "${PLAN9SRC:?export PLAN9SRC — нужны плановские include (amd64/include, sys/include)}"
IMAGEBASE=0x8000
export objtype=amd64
[ -f pe64.s ] || { echo "нет pe64.s — сначала ./fetch_ref.sh"; exit 1; }
# минимальный pe64: MZ+PE заголовки + entry + eficall (без загрузчика ядра)
head -162 pe64.s > pe64min.s
rm -f *.6 *.out bootx64.efi
echo "1) 6a pe64min.s"; "$BINDIR/6a" -DIMAGEBASE=$IMAGEBASE pe64min.s
echo "2) 6c hello.c"; "$BINDIR/6c" -I"$PLAN9SRC/amd64/include" -I"$PLAN9SRC/sys/include" hello.c
echo "3) 6l link"; "$BINDIR/6l" -l -s -R1 -T$IMAGEBASE -o bootx64.out pe64min.6 hello.6
echo "4) dd strip 40b (plan9 a.out header) -> PE32+"
dd if=bootx64.out bs=1 skip=40 of=bootx64.efi 2>/dev/null
echo "bootx64.efi: $(ls -la bootx64.efi | awk '{print $5}') байт"
python3 - <<'PY'
d=open('bootx64.efi','rb').read(); po=int.from_bytes(d[0x3c:0x40],'little'); o=po+24
ok = d[:2]==b'MZ' and d[po:po+4]==b'PE\x00\x00' \
and int.from_bytes(d[po+4:po+6],'little')==0x8664 \
and int.from_bytes(d[o:o+2],'little')==0x20b \
and int.from_bytes(d[o+68:o+70],'little')==10
print("PE32+ x64 EFI_APPLICATION:", "OK" if ok else "BAD")
PY
echo "ESP-образ: python3 mkesp.py bootx64.efi esp.img"
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