mold/test/filler.sh

#!/bin/bash
set -e
cd $(dirname $0)
echo -n "Testing $(basename -s .sh $0) ... "
t=$(pwd)/tmp/$(basename -s .sh $0)
mkdir -p $t

cat <<EOF | cc -o $t/a.o -c -x assembler -
  .text
  .globl main
main:
  lea msg(%rip), %rdi
  xor %rax, %rax
  call printf
  xor %rax, %rax
  ret

  .data
msg:
  .string "Hello world\n"
EOF

../mold -static --filler 0xfe -o $t/exe \
  /usr/lib/x86_64-linux-gnu/crt1.o \
  /usr/lib/x86_64-linux-gnu/crti.o \
  /usr/lib/gcc/x86_64-linux-gnu/9/crtbeginT.o \
  $t/a.o \
  /usr/lib/gcc/x86_64-linux-gnu/9/libgcc.a \
  /usr/lib/gcc/x86_64-linux-gnu/9/libgcc_eh.a \
  /usr/lib/x86_64-linux-gnu/libc.a \
  /usr/lib/gcc/x86_64-linux-gnu/9/crtend.o \
  /usr/lib/x86_64-linux-gnu/crtn.o

sed -i -e 's/--filler 0xfe/--filler 0x00/' $t/exe
hexdump -C $t/exe > $t/txt1

../mold -static --filler 0x00 -o $t/exe \
  /usr/lib/x86_64-linux-gnu/crt1.o \
  /usr/lib/x86_64-linux-gnu/crti.o \
  /usr/lib/gcc/x86_64-linux-gnu/9/crtbeginT.o \
  $t/a.o \
  /usr/lib/gcc/x86_64-linux-gnu/9/libgcc.a \
  /usr/lib/gcc/x86_64-linux-gnu/9/libgcc_eh.a \
  /usr/lib/x86_64-linux-gnu/libc.a \
  /usr/lib/gcc/x86_64-linux-gnu/9/crtend.o \
  /usr/lib/x86_64-linux-gnu/crtn.o

hexdump -C $t/exe > $t/txt2

diff -q $t/txt1 $t/txt2

echo OK