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author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-07-10 17:01:00 -0300 |
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committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-07-12 15:29:08 -0300 |
commit | dddc88587a7f48cbb361d9929ec23d790164eef8 (patch) | |
tree | 5d68ec2c777263280278fd1a4cafad19f2c16fcc /sysdeps/sparc | |
parent | ca230f5833d699a35778f83b3ab646ba37f6f66c (diff) | |
download | glibc-dddc88587a7f48cbb361d9929ec23d790164eef8.zip glibc-dddc88587a7f48cbb361d9929ec23d790164eef8.tar.gz glibc-dddc88587a7f48cbb361d9929ec23d790164eef8.tar.bz2 |
sparc: Fix la_symbind for bind-now (BZ 23734)
The sparc ABI has multiple cases on how to handle JMP_SLOT relocations,
(sparc_fixup_plt/sparc64_fixup_plt). For BINDNOW, _dl_audit_symbind
will be responsible to setup the final relocation value; while for
lazy binding _dl_fixup/_dl_profile_fixup will call the audit callback
and tail cail elf_machine_fixup_plt (which will call
sparc64_fixup_plt).
This patch fixes by issuing the SPARC specific routine on bindnow and
forwarding the audit value to elf_machine_fixup_plt for lazy resolution.
It fixes the la_symbind for bind-now tests on sparc64 and sparcv9:
elf/tst-audit24a
elf/tst-audit24b
elf/tst-audit24c
elf/tst-audit24d
Checked on sparc64-linux-gnu and sparcv9-linux-gnu.
Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Diffstat (limited to 'sysdeps/sparc')
-rw-r--r-- | sysdeps/sparc/dl-lookupcfg.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/sysdeps/sparc/dl-lookupcfg.h b/sysdeps/sparc/dl-lookupcfg.h new file mode 100644 index 0000000..3a5a5c1 --- /dev/null +++ b/sysdeps/sparc/dl-lookupcfg.h @@ -0,0 +1,49 @@ +/* Configuration of lookup functions. SPARC64 version. + Copyright (C) 2023 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 + <https://www.gnu.org/licenses/>. */ + +/* The type of the return value of fixup/profile_fixup. */ +#define DL_FIXUP_VALUE_TYPE ElfW(Addr) +/* Construct a value of type DL_FIXUP_VALUE_TYPE from a code address + and a link map. */ +#define DL_FIXUP_MAKE_VALUE(map, addr) (addr) +/* Extract the code address from a value of type DL_FIXUP_MAKE_VALUE. + */ +#define DL_FIXUP_VALUE_CODE_ADDR(value) (value) +#define DL_FIXUP_VALUE_ADDR(value) (value) +#define DL_FIXUP_ADDR_VALUE(addr) (addr) +#define DL_FIXUP_BINDNOW_ADDR_VALUE(addr) (addr) +/* For bindnow, _dl_audit_symbind will be responsible to setup the final value + while for lazy binding _dl_fixup/_dl_profile_fixup will call the audit + callbacks and tail cail elf_machine_fixup_plt. */ +#ifdef __arch64__ +# define DL_SPARC_FIXUP(l, r, value, new_value) \ + sparc64_fixup_plt (l, r, value, new_value, (r)->r_addend, 0) +#else +# define DL_SPARC_FIXUP(l, r, value, new_value) \ + sparc_fixup_plt (r, value, new_value, 0, 1) +#endif +#define DL_FIXUP_BINDNOW_RELOC(l, reloc, value, new_value, st_value, lazy) \ + ({ \ + if (lazy) \ + (*value) = st_value; \ + else \ + { \ + const PLTREL *__r = (reloc); \ + DL_SPARC_FIXUP (l, __r, value, new_value); \ + } \ + }) |