old-cross-binutils/ld/testsuite/ld-powerpc/tocnovar.d

#source: tocnovar.s
#as: -a64
#ld: -melf64ppc -z relro
#readelf: -l --wide
#target: powerpc64*-*-*

#...
 +LOAD .*
 +LOAD .*
 +GNU_RELRO .*
#...
 +00 +\.text 
 +01 +\.opd \.got 
 +02 +\.opd \.got
PowerPC64 changes for xlc The changes to reorder sections for better relro protection on powerpc64, 3e2b0f31, 23283c1b, and 5ad18f16, run into a problem with xlc. xlc -qdatalocal puts global variables into .toc, which means that .toc must be writable. The simplest way to accomplish this is to edit the linker script to remove .toc sections from .got on detecting xlc object files. bfd/ * elf64-ppc.h (struct ppc64_elf_params): Add "object_in_toc". * elf64-ppc.c (ppc64_elf_add_symbol_hook): Assume that global symbols in .toc indicate xlc compiled code that might require a rw .toc. ld/ * emulparams/elf64ppc.sh (INITIAL_READWRITE_SECTIONS): Define. * emultempl/ppc64elf.em (params): Init new field. (ppc_after_open): New function. (LDEMUL_AFTER_OPEN): Define. * ldlang.c (lang_final): Whitespace fix. ld/testsuite/ * ld-powerpc/tocvar.d, * ld-powerpc/tocvar.s: New test. * ld-powerpc/tocnovar.d, * ld-powerpc/tocnovar.s: New test. * ld-powerpc/powerpc.exp: Run tocvar and tocnovar. 2015-01-27 13:10:05 +00:00			`#source: tocnovar.s`
			`#as: -a64`
			`#ld: -melf64ppc -z relro`
			`#readelf: -l --wide`
			`#target: powerpc64--*`

			`#...`
			`+LOAD .*`
			`+LOAD .*`
			`+GNU_RELRO .*`
			`#...`
			`+00 +\.text`
			`+01 +\.opd \.got`
Non-alloc sections don't belong in PT_LOAD segments Taking them out showed a bug in the powerpc64 backend with .branch_lt being removed from output_bfd but not from previously set up segment section maps. Removing the bfd sections meant their sh_flags (and practically everything else) remaining zero, ie. not SHF_ALLOC, triggering complaints about "`.branch_lt' can't be allocated in segment". include/elf/ * internal.h (ELF_SECTION_IN_SEGMENT_1): Ensure PT_LOAD and similar segments only contain alloc sections. ld/ * emultempl/ppc64elf.em (gld${EMULATION_NAME}_after_allocation): Call gld${EMULATION_NAME}_map_segments regardless of need_laying_out. ld/testsuite/ * ld-powerpc/tocnovar.d: Revert last change. 2015-04-24 09:49:37 +00:00			`+02 +\.opd \.got`