/usr/share/sdcc/include/asm/ is in sdcc-libraries 3.4.0+dfsg-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/sdcc/include/asm/default/
/usr/share/sdcc/include/asm/default/features.h
/usr/share/sdcc/include/asm/ds390/
/usr/share/sdcc/include/asm/ds390/features.h
/usr/share/sdcc/include/asm/gbz80/
/usr/share/sdcc/include/asm/gbz80/features.h
/usr/share/sdcc/include/asm/mcs51/
/usr/share/sdcc/include/asm/mcs51/features.h
/usr/share/sdcc/include/asm/pic14/
/usr/share/sdcc/include/asm/pic14/features.h
/usr/share/sdcc/include/asm/pic16/
/usr/share/sdcc/include/asm/pic16/features.h
/usr/share/sdcc/include/asm/r2k/
/usr/share/sdcc/include/asm/r2k/features.h
/usr/share/sdcc/include/asm/r3ka/
/usr/share/sdcc/include/asm/r3ka/features.h
/usr/share/sdcc/include/asm/stm8/
/usr/share/sdcc/include/asm/stm8/features.h
/usr/share/sdcc/include/asm/tlcs90/
/usr/share/sdcc/include/asm/tlcs90/features.h
/usr/share/sdcc/include/asm/z180/
/usr/share/sdcc/include/asm/z180/features.h
/usr/share/sdcc/include/asm/z80/
/usr/share/sdcc/include/asm/z80/features.h