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d1b9549817
It is very rare, but technically you can create a shared object that can also be executed directly. You can do that by giving a dynamic linker path to the linker. https://github.com/rui314/mold/issues/422
46 lines
870 B
Bash
Executable File
46 lines
870 B
Bash
Executable File
#!/bin/bash
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export LC_ALL=C
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set -e
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CC="${CC:-cc}"
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CXX="${CXX:-c++}"
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GCC="${GCC:-gcc}"
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GXX="${GXX:-g++}"
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OBJDUMP="${OBJDUMP:-objdump}"
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MACHINE="${MACHINE:-$(uname -m)}"
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testname=$(basename "$0" .sh)
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echo -n "Testing $testname ... "
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cd "$(dirname "$0")"/../..
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mold="$(pwd)/mold"
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t=out/test/elf/$testname
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mkdir -p $t
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echo 'int main() {}' | $CC -o $t/exe -xc -
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dyld=$(readelf -Wl $t/exe | grep 'program interpreter:' | sed -e 's!.*: \(.*\)\]!\1!')
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cat <<EOF | $CC -o $t/a.o -c -xc -fPIC -
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#include <stdio.h>
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#include <stdlib.h>
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void hello() {
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puts("Hello world");
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}
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void _start() {
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hello();
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exit(0);
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}
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EOF
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$CC -B. -o $t/b.so $t/a.o -shared -Wl,--dynamic-linker=$dyld
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$QEMU $t/b.so | grep -q 'Hello world'
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cat <<EOF | $CC -o $t/c.o -c -xc -
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void hello();
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int main() { hello(); }
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EOF
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$CC -B. -o $t/exe $t/c.o $t/b.so
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$QEMU $t/exe | grep -q 'Hello world'
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echo OK
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