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author | H.J. Lu <hjl.tools@gmail.com> | 2015-03-09 13:22:01 -0700 |
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committer | H.J. Lu <hjl.tools@gmail.com> | 2015-03-11 09:40:28 -0700 |
commit | 688e958c81f230b5860b57590f45f1bc729ba2cf (patch) | |
tree | 889e0d4d54134c351c6c3510021c846dd0f497ae /sysdeps/x86_64/localplt.data | |
parent | a2d4cf72c0ab07d4e58b42c01ac3ed2b95ca8d9b (diff) | |
download | glibc-688e958c81f230b5860b57590f45f1bc729ba2cf.tar.gz glibc-688e958c81f230b5860b57590f45f1bc729ba2cf.tar.xz glibc-688e958c81f230b5860b57590f45f1bc729ba2cf.zip |
Extend local PLT reference check hjl/pr18078
On x86, linker in binutils 2.26 and newer consolidates R_*_JUMP_SLOT with R_*_GLOB_DAT relocation against the same symbol. This patch extends local PLT reference check to support alternate relocations. [BZ #18078] * scripts/check-localplt.awk: Support alternate relocations. * scripts/localplt.awk: Also check relocations in DT_RELA/DT_REL sections. * sysdeps/unix/sysv/linux/i386/localplt.data: Mark free and malloc entries with + REL R_386_GLOB_DAT. * sysdeps/x86_64/localplt.data: New file.
Diffstat (limited to 'sysdeps/x86_64/localplt.data')
-rw-r--r-- | sysdeps/x86_64/localplt.data | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/sysdeps/x86_64/localplt.data b/sysdeps/x86_64/localplt.data new file mode 100644 index 0000000000..d140476dfe --- /dev/null +++ b/sysdeps/x86_64/localplt.data @@ -0,0 +1,19 @@ +# See scripts/check-localplt.awk for how this file is processed. +# PLT use is required for the malloc family and for matherr because +# users can define their own functions and have library internals call them. +# Linker in binutils 2.26 and newer consolidates R_X86_64_JUMP_SLOT +# relocation with R_X86_64_GLOB_DAT relocation against the same symbol. +libc.so: calloc +libc.so: free + RELA R_X86_64_GLOB_DAT +libc.so: malloc + RELA R_X86_64_GLOB_DAT +libc.so: memalign +libc.so: realloc +libm.so: matherr +# The dynamic loader uses __libc_memalign internally to allocate aligned +# TLS storage. The other malloc family of functions are expected to allow +# user symbol interposition. +ld.so: __libc_memalign +ld.so: malloc +ld.so: calloc +ld.so: realloc +ld.so: free + RELA R_X86_64_GLOB_DAT |