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[Bug ld/26936] [ld, PIE] ld drops relocation for .text.__x86.get_pc_thun
From: |
vries at gcc dot gnu.org |
Subject: |
[Bug ld/26936] [ld, PIE] ld drops relocation for .text.__x86.get_pc_thunk.bx |
Date: |
Tue, 24 Nov 2020 14:53:54 +0000 |
https://sourceware.org/bugzilla/show_bug.cgi?id=26936
Tom de Vries <vries at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|1 |0
Version|2.35 |2.36 (HEAD)
Status|WAITING |UNCONFIRMED
--- Comment #10 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to H.J. Lu from comment #9)
> (In reply to Tom de Vries from comment #8)
>
> >
> > I see, yes that looks OK, thanks for showing me.
> >
> > I hope then that it will reproduce for you with the .s based approach from
> > comments 3/4/5.
>
> Please try binutils master branch.
Build binutils from today's commit 50757f95a8:
...
$ ls ~/binutils/install/bin/
addr2line c++filt ld nm objdump readelf strings
ar elfedit ld.bfd objcopy ranlib size strip
...
So we have:
...
$ ~/binutils/install/bin/ld -v
GNU ld (GNU Binutils) 2.35.50.20201124
...
Then build the .s files using the freshly build ld:
...
$ gcc -B /home/vries/binutils/install/bin -g split-1.s morestack.S -m32 -pie
-Wl,-v
collect2 version 7.5.0
/home/vries/binutils/install/bin/ld -plugin
/usr/lib64/gcc/x86_64-suse-linux/7/liblto_plugin.so
-plugin-opt=/usr/lib64/gcc/x86_64-suse-linux/7/lto-wrapper
-plugin-opt=-fresolution=/tmp/ccAPzqvf.res -plugin-opt=-pass-through=-lgcc
-plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lc
-plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s --build-id
--eh-frame-hdr -m elf_i386 -dynamic-linker /lib/ld-linux.so.2 -pie
/usr/lib64/gcc/x86_64-suse-linux/7/../../../../lib/Scrt1.o
/usr/lib64/gcc/x86_64-suse-linux/7/../../../../lib/crti.o
/usr/lib64/gcc/x86_64-suse-linux/7/32/crtbeginS.o
-L/usr/lib64/gcc/x86_64-suse-linux/7/32
-L/usr/lib64/gcc/x86_64-suse-linux/7/../../../../x86_64-suse-linux/lib/../lib
-L/usr/lib64/gcc/x86_64-suse-linux/7/../../../../lib -L/lib/../lib
-L/usr/lib/../lib -L/home/vries/binutils/install/bin
-L/usr/lib64/gcc/x86_64-suse-linux/7
-L/usr/lib64/gcc/x86_64-suse-linux/7/../../../../x86_64-suse-linux/lib
-L/usr/lib64/gcc/x86_64-suse-linux/7/../../.. /tmp/ccvuPjjl.o /tmp/ccwj6r5B.o
-v -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s
--no-as-needed /usr/lib64/gcc/x86_64-suse-linux/7/32/crtendS.o
/usr/lib64/gcc/x86_64-suse-linux/7/../../../../lib/crtn.o
GNU ld (GNU Binutils) 2.35.50.20201124
...
And, reproduced:
...
$ ~/binutils/install/bin/readelf -wL a.out | grep morestack.S | tail
morestack.S 808 0x151e x
morestack.S 812 0x1524 x
morestack.S 830 0x1525 x
morestack.S 831 0x1529 x
morestack.S 832 0x152d x
morestack.S 838 0x1532 x
morestack.S - 0x1533
morestack.S 636 0 x
morestack.S 637 0x3 x
morestack.S - 0x4
...
--
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- [Bug ld/26936] [ld, PIE] ld drops relocation for .text.__x86.get_pc_thunk.bx, (continued)
- [Bug ld/26936] [ld, PIE] ld drops relocation for .text.__x86.get_pc_thunk.bx, vries at gcc dot gnu.org, 2020/11/24
- [Bug ld/26936] [ld, PIE] ld drops relocation for .text.__x86.get_pc_thunk.bx, hjl.tools at gmail dot com, 2020/11/24
- [Bug ld/26936] [ld, PIE] ld drops relocation for .text.__x86.get_pc_thunk.bx, hjl.tools at gmail dot com, 2020/11/24
- [Bug ld/26936] [ld, PIE] ld drops relocation for .text.__x86.get_pc_thunk.bx, vries at gcc dot gnu.org, 2020/11/24
- [Bug ld/26936] [ld, PIE] ld drops relocation for .text.__x86.get_pc_thunk.bx, vries at gcc dot gnu.org, 2020/11/24
- [Bug ld/26936] [ld, PIE] ld drops relocation for .text.__x86.get_pc_thunk.bx, vries at gcc dot gnu.org, 2020/11/24
- [Bug ld/26936] [ld, PIE] ld drops relocation for .text.__x86.get_pc_thunk.bx, vries at gcc dot gnu.org, 2020/11/24
- [Bug ld/26936] [ld, PIE] ld drops relocation for .text.__x86.get_pc_thunk.bx, hjl.tools at gmail dot com, 2020/11/24
- [Bug ld/26936] [ld, PIE] ld drops relocation for .text.__x86.get_pc_thunk.bx, vries at gcc dot gnu.org, 2020/11/24
- [Bug ld/26936] [ld, PIE] ld drops relocation for .text.__x86.get_pc_thunk.bx, hjl.tools at gmail dot com, 2020/11/24
- [Bug ld/26936] [ld, PIE] ld drops relocation for .text.__x86.get_pc_thunk.bx,
vries at gcc dot gnu.org <=
- [Bug ld/26936] [ld, PIE] ld drops relocation for .text.__x86.get_pc_thunk.bx, vries at gcc dot gnu.org, 2020/11/24
- [Bug ld/26936] [ld, PIE] ld drops relocation for .text.__x86.get_pc_thunk.bx, hjl.tools at gmail dot com, 2020/11/24
- [Bug ld/26936] [ld, PIE] ld drops relocation for .text.__x86.get_pc_thunk.bx, vries at gcc dot gnu.org, 2020/11/24
- [Bug ld/26936] [ld, PIE] ld drops relocation for .text.__x86.get_pc_thunk.bx, matz at suse dot de, 2020/11/24
- [Bug ld/26936] [ld, PIE] ld drops relocation for .text.__x86.get_pc_thunk.bx, hjl.tools at gmail dot com, 2020/11/24
- [Bug ld/26936] ld drops relocation for .text.__x86.get_pc_thunk.bx, hjl.tools at gmail dot com, 2020/11/25
- [Bug ld/26936] ld drops relocation for .text.__x86.get_pc_thunk.bx, matz at suse dot de, 2020/11/25
- [Bug ld/26936] ld drops relocation for .text.__x86.get_pc_thunk.bx, cvs-commit at gcc dot gnu.org, 2020/11/25
- [Bug ld/26936] ld drops relocation for .text.__x86.get_pc_thunk.bx, hjl.tools at gmail dot com, 2020/11/25
- [Bug ld/26936] ld drops relocation for .text.__x86.get_pc_thunk.bx, i at maskray dot me, 2020/11/25