/usr/share/fpcsrc/2.6.2/rtl/i386/ is in fpc-source-2.6.2 2.6.2-8.
This file is owned by root:root, with mode 0o755.
..
/usr/share/fpcsrc/2.6.2/rtl/i386/cpu.pp
/usr/share/fpcsrc/2.6.2/rtl/i386/fastmove.inc
/usr/share/fpcsrc/2.6.2/rtl/i386/i386.inc
/usr/share/fpcsrc/2.6.2/rtl/i386/int64p.inc
/usr/share/fpcsrc/2.6.2/rtl/i386/math.inc
/usr/share/fpcsrc/2.6.2/rtl/i386/mathu.inc
/usr/share/fpcsrc/2.6.2/rtl/i386/mathuh.inc
/usr/share/fpcsrc/2.6.2/rtl/i386/mmx.pp
/usr/share/fpcsrc/2.6.2/rtl/i386/set.inc
/usr/share/fpcsrc/2.6.2/rtl/i386/setjump.inc
/usr/share/fpcsrc/2.6.2/rtl/i386/setjumph.inc
/usr/share/fpcsrc/2.6.2/rtl/i386/strings.inc
/usr/share/fpcsrc/2.6.2/rtl/i386/stringss.inc
/usr/share/fpcsrc/2.6.2/rtl/i386/strpas.inc