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https://github.com/rui314/mold.git
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1b86708683
This reverts commitef04befcbaand6c964df459. Even though these commits are not technically wrong, they caused a regression on ARM32 and PPC64LE. It is because glibc cannot handle IRELATIVE relocations in .rela.plt on these targets. Compare the following two source source files: https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/x86_64/dl-machine.h;h=005d089501fa78654e16103de9ec901af7be4ff2;hb=HEAD#l530 https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/arm/dl-machine.h;h=b0521c15496b9967a1c00a0ca7214bad2337be14;hb=HEAD#l464 ARM doesn't handle IRELATIVE for some reason, though x86-64 does. I guess this is glibc's bug, but apparently we can't create IRELATIVE relocations in .rela.plt. So we need to create it in .rela.dyn.
40 lines
750 B
Bash
Executable File
40 lines
750 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="${TEST_CC:-cc}"
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CXX="${TEST_CXX:-c++}"
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GCC="${TEST_GCC:-gcc}"
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GXX="${TEST_GXX:-g++}"
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MACHINE="${MACHINE:-$(uname -m)}"
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testname=$(basename "$0" .sh)
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echo -n "Testing $testname ... "
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t=out/test/elf/$MACHINE/$testname
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mkdir -p $t
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[ $MACHINE = x86_64 ] || { echo skipped; exit; }
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cat <<EOF | $CC -fPIC -shared -Wl,-z,noexecstack -o $t/a.so -x assembler -
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.globl ext1, ext2
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ext1:
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nop
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ext2:
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nop
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EOF
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cat <<EOF | $CC -c -o $t/b.o -x assembler -
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.globl _start
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_start:
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call ext1@PLT
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call ext2@PLT
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mov ext2@GOTPCREL(%rip), %rax
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ret
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EOF
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./mold -z separate-loadable-segments -pie -o $t/exe $t/b.o $t/a.so
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${TEST_TRIPLE}objdump -d -j .plt.got $t/exe > $t/log
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grep -Eq '1034:.*jmp.* <ext2>' $t/log
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echo OK
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