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| author | Mihailo Stojanovic <mihailo.stojanovic@rt-rk.com> | 2019-08-23 16:47:27 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2019-08-23 16:47:27 +0000 |
| commit | edd8d70b91e1ccef549a7c668499596cc4d56ad1 (patch) | |
| tree | 381abb05ebdfcd3b936d0ce0f1be15176df04e53 /sysdeps/mips/tst-undefined-weak-lib.S | |
| parent | 33bc9efd91de1b14354291fc8ebd5bce96379f12 (diff) | |
| download | glibc-edd8d70b91e1ccef549a7c668499596cc4d56ad1.tar.gz glibc-edd8d70b91e1ccef549a7c668499596cc4d56ad1.tar.xz glibc-edd8d70b91e1ccef549a7c668499596cc4d56ad1.zip | |
[MIPS] Raise highest supported EI_ABIVERSION value [BZ #24916]
This bumps the highest valid EI_ABIVERSION value to ABSOLUTE ABI. New testcase loads the symbol from the GOT with the "lb" instruction so that the EI_ABIVERSION header field of the shared object is set to ABSOLUTE (it doesn't actually check the value of the symbol), and makes sure that the main executable is executed without "ABI version invalid" error. Tested for all three ABIs (o32, n32, n64) using both static linker which handles undefined weak symbols correctly [1] (and sets the EI_ABIVERSION of the test module) and the one that doesn't (EI_ABIVERSION left as 0). [1] https://sourceware.org/ml/binutils/2018-07/msg00268.html [BZ #24916] * sysdeps/mips/Makefile [$(subdir) = elf] (tests): Add tst-undefined-weak. [$(subdir) = elf] (modules-names): Add tst-undefined-weak-lib. [$(subdir) = elf] ($(objpfx)tst-undefined-weak): Add dependency. * sysdeps/mips/tst-undefined-weak-lib.S: New file. * sysdeps/mips/tst-undefined-weak.c: Likewise. * sysdeps/unix/sysv/linux/mips/ldsodefs.h (VALID_ELF_ABIVERSION): Increment highest valid ABIVERSION value.
Diffstat (limited to 'sysdeps/mips/tst-undefined-weak-lib.S')
| -rw-r--r-- | sysdeps/mips/tst-undefined-weak-lib.S | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/sysdeps/mips/tst-undefined-weak-lib.S b/sysdeps/mips/tst-undefined-weak-lib.S new file mode 100644 index 0000000000..a175ebf90e --- /dev/null +++ b/sysdeps/mips/tst-undefined-weak-lib.S @@ -0,0 +1,43 @@ +/* Undefined weak symbol loading shared module. + Copyright (C) 2019 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sgidefs.h> + + .text + .globl x + .set nomips16 + .set nomicromips + .ent x + .type x, @function +x: + .set noreorder +#if _MIPS_SIM == _ABIO32 + .cpload $25 + jr $31 + lb $2,%got(a)($28) +#else + .cpsetup $25,$24,x + lb $2,%got_disp(a)($28) + jr $31 + .cpreturn +#endif + .set reorder + .end x + .size x, .-x + .weak a + .hidden a |