glibc/sysdeps/x86_64/localplt.data

# 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 + RELA R_X86_64_GLOB_DAT
libc.so: free + RELA R_X86_64_GLOB_DAT
libc.so: malloc + RELA R_X86_64_GLOB_DAT
libc.so: realloc + RELA R_X86_64_GLOB_DAT
libm.so: matherr + RELA R_X86_64_GLOB_DAT
# The TLS-enabled version of these functions is interposed from libc.so.
ld.so: _dl_signal_error + RELA R_X86_64_GLOB_DAT
ld.so: _dl_catch_error + RELA R_X86_64_GLOB_DAT
ld.so: _dl_signal_exception + RELA R_X86_64_GLOB_DAT
ld.so: _dl_catch_exception + RELA R_X86_64_GLOB_DAT
Extend local PLT reference check 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. 2015-07-29 18:57:54 +00:00			`# 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.`
Support PLT and GOT references in local PIC check Linker in binutils 2.26 and newer generate GOT references instead PLT references when -z now is passed to linker. We need to extend scripts/localplt.awk to allow PLT or GOT references. [BZ #19007] * scripts/localplt.awk: Also allow GOT references. * sysdeps/unix/sysv/linux/i386/localplt.data: Mark _Unwind_Find_FDE, calloc, memalign, realloc and __libc_memalign with "+ REL R_386_GLOB_DAT". * sysdeps/x86_64/localplt.data: Mark calloc, memalign, realloc and __libc_memalign with "+ RELA R_X86_64_GLOB_DAT". 2015-10-14 12:59:50 +00:00			`libc.so: calloc + RELA R_X86_64_GLOB_DAT`
Extend local PLT reference check 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. 2015-07-29 18:57:54 +00:00			`libc.so: free + RELA R_X86_64_GLOB_DAT`
			`libc.so: malloc + RELA R_X86_64_GLOB_DAT`
Support PLT and GOT references in local PIC check Linker in binutils 2.26 and newer generate GOT references instead PLT references when -z now is passed to linker. We need to extend scripts/localplt.awk to allow PLT or GOT references. [BZ #19007] * scripts/localplt.awk: Also allow GOT references. * sysdeps/unix/sysv/linux/i386/localplt.data: Mark _Unwind_Find_FDE, calloc, memalign, realloc and __libc_memalign with "+ REL R_386_GLOB_DAT". * sysdeps/x86_64/localplt.data: Mark calloc, memalign, realloc and __libc_memalign with "+ RELA R_X86_64_GLOB_DAT". 2015-10-14 12:59:50 +00:00			`libc.so: realloc + RELA R_X86_64_GLOB_DAT`
Document and fix --enable-bind-now [BZ #21015] 2017-03-02 13:44:28 +00:00			`libm.so: matherr + RELA R_X86_64_GLOB_DAT`
Implement _dl_catch_error, _dl_signal_error in libc.so [BZ #16628] This change moves the main implementation of _dl_catch_error, _dl_signal_error to libc.so, where TLS variables can be used directly. This removes a writable function pointer from the rtld_global variable. For use during initial relocation, minimal implementations of these functions are provided in ld.so. These are eventually interposed by the libc.so implementations. This is implemented by compiling elf/dl-error-skeleton.c twice, via elf/dl-error.c and elf/dl-error-minimal.c. As a side effect of this change, the static version of dl-error.c no longer includes support for the _dl_signal_cerror/_dl_receive_error mechanism because it is only used in ld.so. 2016-11-30 14:59:57 +00:00			`# The TLS-enabled version of these functions is interposed from libc.so.`
			`ld.so: _dl_signal_error + RELA R_X86_64_GLOB_DAT`
			`ld.so: _dl_catch_error + RELA R_X86_64_GLOB_DAT`
ld.so: Introduce struct dl_exception This commit separates allocating and raising exceptions. This simplifies catching and re-raising them because it is no longer necessary to make a temporary, on-stack copy of the exception message. 2017-08-10 11:40:22 +00:00			`ld.so: _dl_signal_exception + RELA R_X86_64_GLOB_DAT`
			`ld.so: _dl_catch_exception + RELA R_X86_64_GLOB_DAT`