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Age	Commit message (Collapse)	Author	Files	Lines
2016-04-05	ELF/LD: Avoid producing hidden and internal dynamic symbols	Maciej W. Rozycki	1	-1/+1
	Always turn hidden and internal symbols which have a dynamic index into local ones. This is required by the the ELF gABI[1]: "A hidden symbol contained in a relocatable object must be either removed or converted to STB_LOCAL binding by the link-editor when the relocatable object is included in an executable file or shared object." "An internal symbol contained in a relocatable object must be either removed or converted to STB_LOCAL binding by the link-editor when the relocatable object is included in an executable file or shared object." The ELF linker usually respects this requirement, however in the case where a dynamic symbol has been preallocated due to a reference of the default export class aka visibility from the object being linked, and then merged with a hidden or internal symbol definition from within the same object, then the original export class is carried over to the output dynamic symbol table, because while merging the generic ELF linker only converts affected dynamic symbols to local when they are defined or referenced by the object being linked and a dynamic object involved in the link both at a time. The dynamic symbol produced confuses then the dynamic loader at the run time -- the hidden or internal export class is ignored and the symbol follows preemption rules as with the default export class. In the MIPS target it happens when `mips_elf_record_global_got_symbol' creates a dynamic symbol when a call relocation is encountered. Additionally if the undefined symbol referred by such a relocation does specify the intended export class, then a local dynamic symbol is created instead, which is harmless and allowed, but useless. Normally no local dynamic symbols are created, except for a single dummy one at the beginning. Correct the problem by removing the extra check for a dynamic symbol being defined or referenced by the object being linked and a dynamic object involved in the link both at a time. The test cases included cover the internal and hidden symbol cases, as well as a protected symbol for a reference, the handling of which is unchanged by this fix. Both cases described above are covered, that is where an internal or hidden dynamic symbol is produced and where a local one is. NB this change affects CRIS results where some symbols in the static table produced in a final link are now converted from STV_HIDDEN to STB_LOCAL. This happens whenever the `elf_backend_hide_symbol' handler is called, so the affected symbols must have been chosen for entering into the dynamic symbol table, except in these test cases no such symbol table is produced. In fully linked binaries the static symbol table is only used for debugging though, so such a change is fine. References: [1] "System V Application Binary Interface - DRAFT - 24 April 2001", The Santa Cruz Operation, Inc., "Symbol Table", <http://www.sco.com/developers/gabi/2001-04-24/ch4.symtab.html> bfd/ PR ld/19908 * elflink.c (elf_link_add_object_symbols): Always turn hidden and internal symbols which have a dynamic index into local ones. ld/ PR ld/19908 * testsuite/ld-cris/tls-e-20.d: Adjust for hidden symbol handling fix. * testsuite/ld-cris/tls-e-20a.d: Likewise. * testsuite/ld-cris/tls-e-21.d: Likewise. * testsuite/ld-cris/tls-e-23.d: Likewise. * testsuite/ld-cris/tls-e-80.d: Likewise. * testsuite/ld-cris/tls-gd-3h.d: Likewise. * testsuite/ld-cris/tls-leie-19.d: Likewise. * testsuite/ld-mips-elf/export-class-ref-lib.sd: New test. * testsuite/ld-mips-elf/export-hidden-ref.sd: New test. * testsuite/ld-mips-elf/export-internal-ref.sd: New test. * testsuite/ld-mips-elf/export-protected-ref.sd: New test. * testsuite/ld-mips-elf/export-class-ref-f0.s: New test source. * testsuite/ld-mips-elf/export-class-ref-f1.s: New test source. * testsuite/ld-mips-elf/export-class-ref-f2.s: New test source. * testsuite/ld-mips-elf/mips-elf.exp: Run the new tests.
2012-06-15	ld/	Alan Modra	1	-3/+3
	* ldlang.h (lang_output_section_statement_type): Add after_end field. (lang_abs_symbol_at_beginning_of, lang_abs_symbol_at_end_of): Delete. (section_for_dot): Declare. * ldlang.c (lang_size_sections_1): Correct comment. (current_section): Move earlier. (current_assign, prefer_next_section): New static vars. (lang_do_assignments_1): Add found_end param. Detect _end assignment to set found_end. Set os->after_end. Set above statics. (lang_do_assignments): Adjust lang_do_assignments_1 call. Init vars. (section_for_dot): New function. (lang_set_startof): Don't make an absolute symbol. (lang_abs_symbol_at_beginning_of, lang_abs_symbol_at_end_of): Delete. * ldexp.c (new_rel_from_abs): Use section_for_dot. * emultempl/lnk960.em (symbol_at_beginning_of): New function. (symbol_at_end_of): Likewise. (lnk960_after_allocation): Use them. * scripttempl/elf.sc: Precede OTHER_GOT_SYMBOLS with . = .; and likewise before __bss_start. ld/testsuite/ Update far too many tests.
2012-06-06	bfd/	Alan Modra	1	-0/+2
	* elflink.c (elf_link_input_bfd): Provide a file symbol for each input file with local syms, if the input lacks such. (bfd_elf_final_link): Add a file symbol to mark end of locals for which we can associate with input files. (struct elf_final_link_info): Add filesym_count field. (struct elf_outext_info): Add need_second_pass and second_pass. (elf_link_output_extsym): Detect symbols defined in the output file, emit them on second pass over locals. ld/testsuite/ Update to suit added STT_FILE symbols.
2009-10-19	* ld-cris/tls-e-20.d, ld-cris/tls-e-20a.d, ld-cris/tls-e-22.d,	Hans-Peter Nilsson	1	-1/+1
	ld-cris/tls-e-80.d, ld-cris/tls-e-dtpoffd1.d, ld-cris/tls-e-dtpoffd3.d, ld-cris/tls-ldgde-14.d, ld-cris/tls-ldgde-15.d, ld-cris/tls-ldgdex-14.d, ld-cris/tls-ldgdex-15.d: Adjust for change in non-shared R_CRIS_32_DTPREL and R_CRIS_16_DTPREL relocations.
2009-09-24	bfd/	H.J. Lu	1	-1/+1
	2009-09-24 H.J. Lu <hongjiu.lu@intel.com> PR ld/10630 * elflink.c (elf_link_output_extsym): Turn off visibility on local symbol. (bfd_elf_final_link): Turn off visibility on dynamic local symbol. ld/testsuite/ 2009-09-24 H.J. Lu <hongjiu.lu@intel.com> PR ld/10630 * ld-alpha/tlsbin.rd: Remove HIDDEN/.hidden on local symbols. * ld-alpha/tlsbinr.rd: Likewise. * ld-alpha/tlspic.rd: Likewise. * ld-cris/libdso-2.d: Likewise. * ld-cris/locref1.d: Likewise. * ld-cris/locref2.d: Likewise. * ld-cris/tls-e-20a.d: Likewise. * ld-cris/tls-e-20.d: Likewise. * ld-cris/tls-e-80.d: Likewise. * ld-cris/tls-gc-68.d: Likewise. * ld-cris/tls-gc-69.d: Likewise. * ld-cris/tls-gc-70.d: Likewise. * ld-cris/tls-gc-75.d: Likewise. * ld-cris/tls-gc-76.d: Likewise. * ld-cris/tls-gc-79.d: Likewise. * ld-cris/tls-gd-1h.d: Likewise. * ld-cris/tls-gd-2h.d: Likewise. * ld-cris/tls-ld-4.d: Likewise. * ld-cris/tls-ld-5.d: Likewise. * ld-cris/tls-ld-6.d: Likewise. * ld-cris/tls-ld-7.d: Likewise. * ld-cris/tls-ldgd-14.d: Likewise. * ld-cris/tls-ldgd-15.d: Likewise. * ld-cris/tls-local-63.d: Likewise. * ld-cris/tls-local-64.d: Likewise. * ld-elf/pr9676.rd: Likewise. * ld-elf/pr9679.rd: Likewise. * ld-elfvsb/hidden2.d: Likewise. * ld-i386/tlsbindesc.rd: Likewise. * ld-i386/tlsbin.rd: Likewise. * ld-i386/tlsdesc.rd: Likewise. * ld-i386/tlsgdesc.rd: Likewise. * ld-i386/tlsnopic.rd: Likewise. * ld-i386/tlspic.rd: Likewise. * ld-ia64/tlsbin.rd: Likewise. * ld-ia64/tlspic.rd: Likewise. * ld-powerpc/tlsexe32.r: Likewise. * ld-powerpc/tlsexe.r: Likewise. * ld-powerpc/tlsexetoc.r: Likewise. * ld-powerpc/tlsso32.r: Likewise. * ld-powerpc/tlsso.r: Likewise. * ld-powerpc/tlstocso.r: Likewise. * ld-s390/tlsbin_64.rd: Likewise. * ld-s390/tlsbin.rd: Likewise. * ld-s390/tlspic_64.rd: Likewise. * ld-s390/tlspic.rd: Likewise. * ld-sparc/gotop32.rd: Likewise. * ld-sparc/gotop64.rd: Likewise. * ld-sparc/tlssunbin32.rd: Likewise. * ld-sparc/tlssunbin64.rd: Likewise. * ld-sparc/tlssunnopic32.rd: Likewise. * ld-sparc/tlssunnopic64.rd: Likewise. * ld-sparc/tlssunpic32.rd: Likewise. * ld-sparc/tlssunpic64.rd: Likewise. * ld-x86-64/tlsbindesc.rd: Likewise. * ld-x86-64/tlsbin.rd: Likewise. * ld-x86-64/tlsdesc.rd: Likewise. * ld-x86-64/tlsgdesc.rd: Likewise. * ld-x86-64/tlspic.rd: Likewise. * ld-xtensa/tlsbin.rd: Likewise. * ld-xtensa/tlspic.rd: Likewise. * ld-elf/local1.d: New. * ld-elf/local1.map: Likewise. * ld-elf/local1.s: Likewise. * ld-ia64/local1.d: Likewise. * ld-ia64/local1.map: Likewise. * ld-ia64/local1.s: Likewise.
2009-03-24	* ld-cris/tls-e-20.d, ld-cris/tls-e-20a.d, ld-cris/tls-e-21.d,	Hans-Peter Nilsson	1	-1/+1
	ld-cris/tls-e-80.d, ld-cris/tls-gd-3.d, ld-cris/tls-gd-3h.d, ld-cris/tls-global-74.d, ld-cris/tls-ldgde-14.d, ld-cris/tls-ldgde-15.d, ld-cris/tls-legd-16.d, ld-cris/tls-legd-17.d, ld-cris/tls-local-57.d, ld-cris/tls-local-58.d, ld-cris/tls-local-59.d: Adjust for BFD change in link-time known GOT contents for GD relocations.
2009-01-27	* ld-cris/tls-e-20.d, ld-cris/tls-e-20a.d, ld-cris/tls-e-22.d,	Hans-Peter Nilsson	1	-1/+1
	ld-cris/tls-ldgde-14.d, ld-cris/tls-ldgde-15.d, ld-cris/tls-ldgdex-14.d, ld-cris/tls-ldgdex-15.d: Adjust for change in relocation values.
2009-01-07	* ld-cris/tls-e-20.d, ld-cris/tls-e-20a.d, ld-cris/tls-e-21.d,	Hans-Peter Nilsson	1	-1/+1
	ld-cris/tls-e-23.d, ld-cris/tls-e-66.d, ld-cris/tls-gd-3.d, ld-cris/tls-gd-3h.d, ld-cris/tls-global-74.d, ld-cris/tls-ie-8e1.d, ld-cris/tls-ldgde-14.d, ld-cris/tls-ldgde-15.d, ld-cris/tls-le-12.d, ld-cris/tls-le-13.d, ld-cris/tls-le-13s.d, ld-cris/tls-legd-16.d, ld-cris/tls-legd-17.d, ld-cris/tls-legdx-16.d, ld-cris/tls-legdx-17.d, ld-cris/tls-leie-18.d, ld-cris/tls-leie-19.d, ld-cris/tls-local-57.d, ld-cris/tls-local-58.d, ld-cris/tls-local-59.d: Adjust for relocation value now offset by negative program TLS block size. * ld-cris/tls-le-12s.d: Ditto. Move 128-byte tls-data to last. Adjust accordingly. * ld-cris/tls-le-12s.s: Use movs, not movu, for sign-extended always-negative relocation. * ld-cris/tls-tprelm.s: Move filler data to after symbol for tested relocation. * ld-cris/tls-ok-36.d: Adjust accordingly.
2008-12-15	* ld-cris/got7.s: Correct .size expression.	Hans-Peter Nilsson	1	-1/+1
	* ld-cris/tls-e-20a.d: Adjust accordingly.
2008-11-25	* ld-cris/got7.s, ld-cris/init.s, ld-cris/pic-gc-72.d,	Hans-Peter Nilsson	1	-0/+110
	ld-cris/pic-gc-72.s, ld-cris/pic-gc-73.d, ld-cris/pic-gc-73.s, ld-cris/tls-dso-x1x2-1.d, ld-cris/tls-dso-xz-1.d, ld-cris/tls-dtprelm.s, ld-cris/tls-e-20.d, ld-cris/tls-e-20a.d, ld-cris/tls-e-21.d, ld-cris/tls-e-22.d, ld-cris/tls-e-23.d, ld-cris/tls-e-66.d, ld-cris/tls-err-20x.d, ld-cris/tls-err-24.d, ld-cris/tls-err-25.d, ld-cris/tls-err-26.d, ld-cris/tls-err-27.d, ld-cris/tls-err-28.d, ld-cris/tls-err-29.d, ld-cris/tls-err-31.d, ld-cris/tls-err-33.d, ld-cris/tls-err-35.d, ld-cris/tls-err-37.d, ld-cris/tls-err-39.d, ld-cris/tls-err-40.d, ld-cris/tls-err-41.d, ld-cris/tls-err-43.d, ld-cris/tls-err-44.d, ld-cris/tls-err-45.d, ld-cris/tls-err-47.d, ld-cris/tls-err-48.d, ld-cris/tls-err-49.d, ld-cris/tls-err-51.d, ld-cris/tls-err-52.d, ld-cris/tls-err-53.d, ld-cris/tls-err-55.d, ld-cris/tls-err-55.s, ld-cris/tls-err-56.d, ld-cris/tls-err-56.s, ld-cris/tls-err-62.d, ld-cris/tls-err-62.s, ld-cris/tls-err-65.d, ld-cris/tls-err-67.d, ld-cris/tls-gc-68.d, ld-cris/tls-gc-69.d, ld-cris/tls-gc-70.d, ld-cris/tls-gc-71.d, ld-cris/tls-gc-71.s, ld-cris/tls-gc-75.d, ld-cris/tls-gc-76.d, ld-cris/tls-gc-76.s, ld-cris/tls-gd-1.d, ld-cris/tls-gd-1.s, ld-cris/tls-gd-1h.d, ld-cris/tls-gd-2.d, ld-cris/tls-gd-2.s, ld-cris/tls-gd-2h.d, ld-cris/tls-gd-3.d, ld-cris/tls-gd-3.s, ld-cris/tls-gd-3h.d, ld-cris/tls-gdgotrelm.s, ld-cris/tls-global-74.d, ld-cris/tls-gottprelm.s, ld-cris/tls-hx.s, ld-cris/tls-hx1x2.s, ld-cris/tls-ie-10.d, ld-cris/tls-ie-10.s, ld-cris/tls-ie-11.d, ld-cris/tls-ie-11.s, ld-cris/tls-ie-8.d, ld-cris/tls-ie-8.s, ld-cris/tls-ie-9.d, ld-cris/tls-ie-9.s, ld-cris/tls-ld-4.d, ld-cris/tls-ld-4.s, ld-cris/tls-ld-5.d, ld-cris/tls-ld-5.s, ld-cris/tls-ld-6.d, ld-cris/tls-ld-6.s, ld-cris/tls-ld-7.d, ld-cris/tls-ld-7.s, ld-cris/tls-ldgd-14.d, ld-cris/tls-ldgd-14.s, ld-cris/tls-ldgd-15.d, ld-cris/tls-ldgd-15.s, ld-cris/tls-ldgde-14.d, ld-cris/tls-ldgde-15.d, ld-cris/tls-ldgdex-14.d, ld-cris/tls-ldgdex-15.d, ld-cris/tls-ldgdx-14.d, ld-cris/tls-ldgdx-15.d, ld-cris/tls-le-12.d, ld-cris/tls-le-12.s, ld-cris/tls-le-12s.d, ld-cris/tls-le-12s.s, ld-cris/tls-le-13.d, ld-cris/tls-le-13.s, ld-cris/tls-le-13s.d, ld-cris/tls-le-13s.s, ld-cris/tls-legd-16.d, ld-cris/tls-legd-16.s, ld-cris/tls-legd-17.d, ld-cris/tls-legdx-16.d, ld-cris/tls-legdx-17.d, ld-cris/tls-leie-18.d, ld-cris/tls-leie-19.d, ld-cris/tls-leie-19.s, ld-cris/tls-local-54.d, ld-cris/tls-local-54.s, ld-cris/tls-local-57.d, ld-cris/tls-local-57.s, ld-cris/tls-local-58.d, ld-cris/tls-local-58.s, ld-cris/tls-local-59.d, ld-cris/tls-local-59.s, ld-cris/tls-local-60.d, ld-cris/tls-local-61.d, ld-cris/tls-local-63.d, ld-cris/tls-local-64.d, ld-cris/tls-ok-30.d, ld-cris/tls-ok-32.d, ld-cris/tls-ok-34.d, ld-cris/tls-ok-36.d, ld-cris/tls-tprelm.s, ld-cris/tls-und-38.d, ld-cris/tls-und-42.d, ld-cris/tls-und-46.d, ld-cris/tls-und-50.d, ld-cris/tls-x.s, ld-cris/tls-x1x2.s, ld-cris/tls-z.s, ld-cris/tls128.s, ld-cris/tls128g.s: New tests.