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2021-07-21Allows linker scripts to set the SEC_READONLY flag.Luca Boccassi1-0/+1
* ld.texi: Document new output section type. * ldgram.y: Add new token. * ldlang.c: Handle the new flag. * ldlang.h: Add readonly_section to list of section types. * ldlex.l: Add a new identifier. * testsuite/ld-scripts/output-section-types.t: New example linker script. * testsuite/ld-scripts/output-section-types.d: Test driver. * testsyute/ld-scripts/script.exp: Run the new test.
2021-02-02ld --defsymAlan Modra1-17/+2
This makes --defsym support the same expressions as assignment in a script. For example, --defsym 'HIDDEN(foo=0)', will define a hidden visibility foo. * ldgram.y (defsym_expr): Use assignment rule. * ldlex.h (ldlex_defsym): Delete. * ldlex.l (DEFSYMEXP, ldlex_defsym): Delete.
2021-02-02ld script expression parsingAlan Modra1-1/+11
Parsing symbol or file/section names in ld linker scripts is a little complicated. Inside SECTIONS, a name might be the start of an expression or an output section. Is ".foo=x-y" a fancy section name or is it the expression ".foo = x - y"? It isn't possible for a single lookahead parser to decide, so the answer in this case is that it's a section name. This is the reason why everyone writes linker script assignment expressions with lots of white-space. However, there are many places where the parser knows for sure that an expression is expected. Those could be written without whitespace given the first change to ldlex.l below. Unfortunately, that runs into a lookahead problem. Optional expressions at the end of an output section statement require the parser to look ahead one token in expression context. For this example from standard scripts .interp : { *(.interp) } .note.gnu.build-id : { *(.note.gnu.build-id) } at the end of the .interp closing brace, the parser is looking for a possible memspec, phdr, fill or even an optional comma. The next token is a NAME, but in expression context that NAME now doesn't include '-' as a valid char. So the lookahead NAME is ".note.gnu.build" with an unexpected "-id" syntax error before the colon. The rest of the patch involving ldlex_backup arranges to discard that NAME token so that it will be rescanned in the proper script context. * ldgram.y (section): Call ldlex_backup. Remove empty action. * ldlex.h (ldlex_backup): Declare. * ldlex.l (<EXPRESSION>NAME): Don't use NOCFILENAMECHAR set of chars, use SYMBOLNAMECHAR. (ldlex_backup): New function.
2021-01-01Update year range in copyright notice of binutils filesAlan Modra1-1/+1
2020-08-03Use xmalloc rather than mallocAlan Modra1-3/+2
As far as I can tell, the following comment is false nowadays. /* Calls to m-alloc get turned by sed into xm-alloc. */ Remove it, and call xmalloc. * ldlex.l (yy_create_string_buffer): Use xmalloc rather than malloc. * lexsup.c (parse_args): Likewise.
2020-01-01Update year range in copyright notice of binutils filesAlan Modra1-1/+1
2019-10-03bfd, ld: add CTF section linkingNick Alcock1-0/+1
This is quite complicated because the CTF section's contents depend on the final contents of the symtab and strtab, because it has two sections whose contents are shuffled to be in 1:1 correspondence with the symtab, and an internal strtab that gets deduplicated against the ELF strtab (with offsets adjusted to point into the ELF strtab instead). It is also compressed if large enough, so its size depends on its contents! So we cannot construct it as early as most sections: we cannot even *begin* construction until after the symtab and strtab are finalized. Thankfully there is already one section treated similarly: compressed debugging sections: the only differences are that compressed debugging sections have extra handling to deal with their changing name if compressed (CTF sections are always called ".ctf" for now, though we have reserved ".ctf.*" against future use), and that compressed debugging sections have previously-uncompressed content which has to be stashed away for later compression, while CTF sections have no content at all until we generate it (very late). BFD also cannot do the link itself: libctf knows how to do it, and BFD cannot call libctf directly because libctf already depends on bfd for file I/O. So we have to use a pair of callbacks, one, examine_strtab, which allows a caller to examine the symtab and strtab after finalization (called from elf_link_swap_symbols_out(), right before the symtabs are written, and after the strtab has been finalized), and one which actually does the emission (called emit_ctf simply because it is grouped with a bunch of section-specific late-emission function calls at the bottom of bfd_elf_final_link, and a section-specific name seems best for that). emit_ctf is actually called *twice*: once from lang_process if the emulation suggests that this bfd target does not examine the symtab or strtab, and once via a bfd callback if it does. (This means that non-ELF targets still get CTF emitted, even though the late CTF emission stage is never called for them). v2: merged with non-ELF support patch: slight commit message adjustments. v3: do not spend time merging CTF, or crash, if the CTF section is explicitly discarded. Do not try to merge or compress CTF unless linking. v4: add CTF_COMPRESSION_THRESHOLD. Annul the freed input ctf_file_t's after writeout: set SEC_IN_MEMORY on the output contents so a future bfd enhancement knows it could free it. Add SEC_LINKER_CREATED | SEC_KEEP to avoid having to add .ctf to the linker script. Drop now-unnecessary ldlang.h-level elf-bfd.h include and hackery around it. Adapt to elf32.em->elf.em and elf-generic.em->ldelf*.c changes. v5: fix tabdamage. Drop #inclusions in .h files: include in .c files, .em files, and use struct forwards instead. Use bfd_section_is_ctf inline function rather than SECTION_IS_CTF macro. Move a few comments. * Makefile.def (dependencies): all-ld depends on all-libctf. * Makefile.in: Regenerated. include/ * bfdlink.h (elf_strtab_hash): New forward. (elf_sym_strtab): Likewise. (struct bfd_link_callbacks <examine_strtab>): New. (struct bfd_link_callbacks <emit_ctf>): Likewise. bfd/ * elf-bfd.h (bfd_section_is_ctf): New inline function. * elf.c (special_sections_c): Add ".ctf". (assign_file_positions_for_non_load_sections): Note that compressed debugging sections etc are not assigned here. Treat CTF sections like SEC_ELF_COMPRESS sections when is_linker_output: sh_offset -1. (assign_file_positions_except_relocs): Likewise. (find_section_in_list): Note that debugging and CTF sections, as well as reloc sections, are assigned later. (_bfd_elf_assign_file_positions_for_non_load): CTF sections get their size and contents updated. (_bfd_elf_set_section_contents): Skip CTF sections: unlike compressed sections, they have no uncompressed content to copy at this stage. * elflink.c (elf_link_swap_symbols_out): Call the examine_strtab callback right before the strtab is written out. (bfd_elf_final_link): Don't cache the section contents of CTF sections: they are not populated yet. Call the emit_ctf callback right at the end, after all the symbols and strings are flushed out. ld/ * ldlang.h: (struct lang_input_statement_struct): Add the_ctf. (struct elf_sym_strtab): Add forward. (struct elf_strtab_hash): Likewise. (ldlang_ctf_apply_strsym): Declare. (ldlang_write_ctf_late): Likewise. * ldemul.h (ldemul_emit_ctf_early): New. (ldemul_examine_strtab_for_ctf): Likewise. (ld_emulation_xfer_type) <emit_ctf_early>: Likewise. (ld_emulation_xfer_type) <examine_strtab_for_ctf>: Likewise. * ldemul.c (ldemul_emit_ctf_early): New. (ldemul_examine_strtab_for_ctf): Likewise. * ldlang.c: Include ctf-api.h. (CTF_COMPRESSION_THRESHOLD): New. (ctf_output): New. Initialized in... (ldlang_open_ctf): ... this new function. Open all the CTF sections in the input files: mark them non-loaded and empty so as not to copy their contents to the output, but linker-created so the section gets created in the target. (ldlang_merge_ctf): New, merge types via ctf_link_add_ctf and ctf_link. (ldlang_ctf_apply_strsym): New, an examine_strtab callback: wrap ldemul_examine_strtab_for_ctf. (lang_write_ctf): New, write out the CTF section. (ldlang_write_ctf_late): New, late call via bfd's emit_ctf hook. (lang_process): Call ldlang_open_ctf, ldlang_merge_ctf, and lang_write_ctf. * ldmain.c (link_callbacks): Add ldlang_ctf_apply_strsym, ldlang_write_ctf_late. * emultempl/aix.em: Add ctf-api.h. * emultempl/armcoff.em: Likewise. * emultempl/beos.em: Likewise. * emultempl/elf.em: Likewise. * emultempl/generic.em: Likewise. * emultempl/linux.em: Likewise. * emultempl/msp430.em: Likewise. * emultempl/pe.em: Likewise. * emultempl/pep.em: Likewise. * emultempl/ticoff.em: Likewise. * emultempl/vanilla.em: Likewise. * ldcref.c: Likewise. * ldctor.c: Likewise. * ldelf.c: Likewise. * ldelfgen.c: Likewise. * ldemul.c: Likewise. * ldexp.c: Likewise. * ldfile.c: Likewise. * ldgram.c: Likewise. * ldlex.l: Likewise. * ldmain.c: Likewise. * ldmisc.c: Likewise. * ldver.c: Likewise. * ldwrite.c: Likewise. * lexsup.c: Likewise. * mri.c: Likewise. * pe-dll.c: Likewise. * plugin.c: Likewise. * ldelfgen.c (ldelf_emit_ctf_early): New. (ldelf_examine_strtab_for_ctf): tell libctf about the symtab and strtab. (struct ctf_strsym_iter_cb_arg): New, state to do so. (ldelf_ctf_strtab_iter_cb): New: tell libctf about each string in the strtab in turn. (ldelf_ctf_symbols_iter_cb): New, tell libctf about each symbol in the symtab in turn. * ldelfgen.h (struct elf_sym_strtab): Add forward. (struct elf_strtab_hash): Likewise. (struct ctf_file): Likewise. (ldelf_emit_ctf_early): Declare. (ldelf_examine_strtab_for_ctf): Likewise. * emultempl/elf-generic.em (LDEMUL_EMIT_CTF_EARLY): Set it. (LDEMUL_EXAMINE_STRTAB_FOR_CTF): Likewise. * emultempl/aix.em (ld_${EMULATION_NAME}_emulation): Add emit_ctf_early and examine_strtab_for_ctf, NULL by default. * emultempl/armcoff.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/beos.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/elf.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/generic.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/linux.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/msp430.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/pe.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/pep.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/ticoff.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/vanilla.em (ld_vanilla_emulation): Likewise. * Makefile.am: Pull in libctf (and zlib, a transitive requirement for compressed CTF section emission). Pass it on to DejaGNU. * configure.ac: Add AM_ZLIB. * aclocal.m4: Added zlib.m4. * Makefile.in: Regenerated. * testsuite/ld-bootstrap/bootstrap.exp: Use it when relinking ld.
2019-07-20PR24827, Linker loops forever if unterminated multi-line comment in scriptAlan Modra1-2/+2
YY_INPUT returns 0 on end of input, not EOF. PR 24827 * ldlex.l (comment): Check for 0 return from input(), not EOF.
2019-04-03PR24411, Division is not accepted in MEMORY length expressionAlan Modra1-1/+5
Let's hope no one has section names starting with '/' in scripts. If they do, this change to fix parsing of '/' in expressiongs will break their project. PR 24411 ldlex.l (SYMBOLNAMECHAR1): Don't match '/'. (<EXPRESSION>"/DISCARD/"): New.
2019-04-03ldlex.l tidyAlan Modra1-20/+13
Underscore was specified twice in all these patterns, and backslash twice in some. Flex warned about the $SYSROOT rule, which is covered by earlier rules: "ldlex.l:386: warning, rule cannot be matched". * ldlex.l: Formatting. (CMDFILENAMECHAR, CMDFILENAMECHAR1): Delete. (FILENAMECHAR1, SYMBOLNAMECHAR1, FILENAMECHAR, WILDCHAR), (NOCFILENAMECHAR): Remove duplicate chars. Reorder. (SYMBOLCHARN): Likewise. Rename to SYMBOLNAMECHAR. (<INPUTLIST>"$SYSROOT"..): Delete rule.
2019-01-01Update year range in copyright notice of binutils filesAlan Modra1-1/+1
2018-08-03Update PRU assembler to corect hardware register numbering for DWARF.Dimitar Dimitrov1-1/+1
A small rework of the PRU GCC port exposed that CIE data alignment is erroneously set to 4 for PRU in GAS. In fact PRU stack must be aligned to 1. Set the macro to -1, to allow output from GCC to be assembled without errors. Also, while at it, set DWARF2 HW register numbering to follow latest * config/tc-pru.c (pru_regname_to_dw2regnum): Return the starting HW byte-register number. (pru_frame_initial_instructions): Use byte-numbering for FP index. * config/tc-pru.h (DWARF2_DEFAULT_RETURN_COLUMN): Use number from latest GCC. (DWARF2_CIE_DATA_ALIGNMENT): Set to -1.
2018-02-19Use %pI, %pR, %pS, %pT in place of %I, %R, %S and %T.Alan Modra1-1/+1
bfd/ * elf32-arm.c, * elf32-hppa.c, * elf32-lm32.c, * elf32-m32r.c, * elf32-metag.c, * elf32-nds32.c, * elf32-or1k.c, * elf32-ppc.c, * elf32-s390.c, * elf32-sh.c, * elf32-tic6x.c, * elf32-tilepro.c, * elf64-ppc.c, * elf64-s390.c, * elflink.c, * elfnn-aarch64.c, * elfnn-riscv.c, * elfxx-sparc.c, * elfxx-tilegx.c, * elfxx-x86.c, * reloc.c: Replace use of %R and %T in format strings passed to einfo and friends by %pR and %pT. ld/ * ldmisc.c (vfinfo) Handle %pI, %pR, %pS and %pT in place of %I, %R, %S and %T. * ldcref.c, * ldctor.c, * ldemul.c, * ldexp.c, * ldgram.y, * ldlang.c, * ldlex.l, * ldmain.c, * ldmisc.c, * pe-dll.c, * emultempl/sh64elf.em: Replace use of of %I, %R, %S and %T in format strings passed to einfo and friends by %pI, %pR, %pS and %pT.
2018-01-03Update year range in copyright notice of binutils filesAlan Modra1-1/+1
2017-10-12ld whitespace fixesAlan Modra1-35/+35
* pe-dll.c: Formatting, whitespace fixes. * NEWS: Whitespace fixes. * configure.ac: Likewise. * configure.tgt: Likewise. * deffilep.y: Likewise. * genscripts.sh: Likewise. * ld.texinfo: Likewise. * ldgram.y: Likewise. * ldlang.c: Likewise. * ldlex.l: Likewise. * lexsup.c: Likewise. * plugin.c: Likewise. * emulparams/arc-endianness.sh: Likewise. * emulparams/elf32_x86_64.sh: Likewise. * emulparams/elf64mmix.sh: Likewise. * emulparams/elf_x86_64.sh: Likewise. * emulparams/h8300elf.sh: Likewise. * emulparams/h8300elf_linux.sh: Likewise. * emulparams/vxworks.sh: Likewise. * emultempl/aarch64elf.em: Likewise. * emultempl/aix.em: Likewise. * emultempl/armelf.em: Likewise. * emultempl/avrelf.em: Likewise. * emultempl/beos.em: Likewise. * emultempl/hppaelf.em: Likewise. * emultempl/m68kcoff.em: Likewise. * emultempl/m68kelf.em: Likewise. * emultempl/metagelf.em: Likewise. * emultempl/msp430.em: Likewise. * emultempl/nds32elf.em: Likewise. * emultempl/pe.em: Likewise. * emultempl/pep.em: Likewise. * emultempl/ppc64elf.em: Likewise. * emultempl/sh64elf.em: Likewise. * emultempl/spu_ovl.S: Likewise. * emultempl/spuelf.em: Likewise. * emultempl/tic6xdsbt.em: Likewise. * emultempl/ticoff.em: Likewise. * emultempl/vms.em: Likewise. * po/Make-in: Likewise. * scripttempl/DWARF.sc: Likewise. * scripttempl/aix.sc: Likewise. * scripttempl/alpha.sc: Likewise. * scripttempl/alphavms.sc: Likewise. * scripttempl/aout.sc: Likewise. * scripttempl/arclinux.sc: Likewise. * scripttempl/armaout.sc: Likewise. * scripttempl/armbpabi.sc: Likewise. * scripttempl/armcoff.sc: Likewise. * scripttempl/avr.sc: Likewise. * scripttempl/crisaout.sc: Likewise. * scripttempl/delta68.sc: Likewise. * scripttempl/dlx.sc: Likewise. * scripttempl/elf.sc: Likewise. * scripttempl/elf32cr16.sc: Likewise. * scripttempl/elf32cr16c.sc: Likewise. * scripttempl/elf32crx.sc: Likewise. * scripttempl/elf32msp430.sc: Likewise. * scripttempl/elf32msp430_3.sc: Likewise. * scripttempl/elf32sh-symbian.sc: Likewise. * scripttempl/elf32xc16x.sc: Likewise. * scripttempl/elf32xc16xl.sc: Likewise. * scripttempl/elf32xc16xs.sc: Likewise. * scripttempl/elf64hppa.sc: Likewise. * scripttempl/elf_chaos.sc: Likewise. * scripttempl/elfarc.sc: Likewise. * scripttempl/elfarcv2.sc: Likewise. * scripttempl/elfd10v.sc: Likewise. * scripttempl/elfd30v.sc: Likewise. * scripttempl/elfi370.sc: Likewise. * scripttempl/elfm68hc11.sc: Likewise. * scripttempl/elfm68hc12.sc: Likewise. * scripttempl/elfmicroblaze.sc: Likewise. * scripttempl/elfxgate.sc: Likewise. * scripttempl/elfxtensa.sc: Likewise. * scripttempl/epiphany_4x4.sc: Likewise. * scripttempl/epocpe.sc: Likewise. * scripttempl/h8300.sc: Likewise. * scripttempl/h8300h.sc: Likewise. * scripttempl/h8300hn.sc: Likewise. * scripttempl/h8300s.sc: Likewise. * scripttempl/h8300sn.sc: Likewise. * scripttempl/h8300sx.sc: Likewise. * scripttempl/h8300sxn.sc: Likewise. * scripttempl/h8500.sc: Likewise. * scripttempl/h8500b.sc: Likewise. * scripttempl/h8500c.sc: Likewise. * scripttempl/h8500m.sc: Likewise. * scripttempl/h8500s.sc: Likewise. * scripttempl/hppaelf.sc: Likewise. * scripttempl/i386beos.sc: Likewise. * scripttempl/i386coff.sc: Likewise. * scripttempl/i386go32.sc: Likewise. * scripttempl/i386msdos.sc: Likewise. * scripttempl/i860coff.sc: Likewise. * scripttempl/i960.sc: Likewise. * scripttempl/ia64vms.sc: Likewise. * scripttempl/ip2k.sc: Likewise. * scripttempl/iq2000.sc: Likewise. * scripttempl/m68kaux.sc: Likewise. * scripttempl/m68kcoff.sc: Likewise. * scripttempl/m88kbcs.sc: Likewise. * scripttempl/mcorepe.sc: Likewise. * scripttempl/mep.sc: Likewise. * scripttempl/mips.sc: Likewise. * scripttempl/mipsbsd.sc: Likewise. * scripttempl/mmo.sc: Likewise. * scripttempl/moxie.sc: Likewise. * scripttempl/nds32elf.sc: Likewise. * scripttempl/nw.sc: Likewise. * scripttempl/pe.sc: Likewise. * scripttempl/pep.sc: Likewise. * scripttempl/pj.sc: Likewise. * scripttempl/ppcpe.sc: Likewise. * scripttempl/psos.sc: Likewise. * scripttempl/riscix.sc: Likewise. * scripttempl/sh.sc: Likewise. * scripttempl/sparccoff.sc: Likewise. * scripttempl/st2000.sc: Likewise. * scripttempl/tic30aout.sc: Likewise. * scripttempl/tic30coff.sc: Likewise. * scripttempl/tic4xcoff.sc: Likewise. * scripttempl/tic54xcoff.sc: Likewise. * scripttempl/tic80coff.sc: Likewise. * scripttempl/v850.sc: Likewise. * scripttempl/v850_rh850.sc: Likewise. * scripttempl/vanilla.sc: Likewise. * scripttempl/visium.sc: Likewise. * scripttempl/w65.sc: Likewise. * scripttempl/xstormy16.sc: Likewise. * scripttempl/z80.sc: Likewise. * scripttempl/z8000.sc: Likewise. * configure: Regenerate.
2017-10-11ld internationalization fixesAlan Modra1-26/+26
* emultempl/aarch64elf.em: Wrap einfo strings in _(). Formatting. * emultempl/aix.em: Likewise. * emultempl/armcoff.em: Likewise. * emultempl/armelf.em: Likewise. * emultempl/avrelf.em: Likewise. * emultempl/beos.em: Likewise. * emultempl/cr16elf.em: Likewise. * emultempl/elf-generic.em: Likewise. * emultempl/elf32.em: Likewise. * emultempl/genelf.em: Likewise. * emultempl/hppaelf.em: Likewise. * emultempl/linux.em: Likewise. * emultempl/lnk960.em: Likewise. * emultempl/m68hc1xelf.em: Likewise. * emultempl/m68kcoff.em: Likewise. * emultempl/m68kelf.em: Likewise. * emultempl/metagelf.em: Likewise. * emultempl/mipself.em: Likewise. * emultempl/mmix-elfnmmo.em: Likewise. * emultempl/mmo.em: Likewise. * emultempl/msp430.em: Likewise. * emultempl/nds32elf.em: Likewise. * emultempl/nios2elf.em: Likewise. * emultempl/pe.em: Likewise. * emultempl/pep.em: Likewise. * emultempl/ppc32elf.em: Likewise. * emultempl/ppc64elf.em: Likewise. * emultempl/riscvelf.em: Likewise. * emultempl/s390.em: Likewise. * emultempl/scoreelf.em: Likewise. * emultempl/spuelf.em: Likewise. * emultempl/sunos.em: Likewise. * emultempl/tic6xdsbt.em: Likewise. * emultempl/v850elf.em: Likewise. * emultempl/vms.em: Likewise. * emultempl/vxworks.em: Likewise. * ldcref.c: Likewise. * ldlang.c: Likewise. * ldlex.l: Likewise. * ldmain.c: Likewise. * pe-dll.c: Likewise. * plugin.c: Likewise.
2017-10-09ld: Don't allow '~' as the first char in symbol nameH.J. Lu1-2/+3
Don't allow '~' as the first character in symbol name in linker script. PR ld/22267 * ldlex.l (SYMBOLNAMECHAR1) New. (DEFSYMEXP): Replace FILENAMECHAR1 with SYMBOLNAMECHAR1. (EXPRESSION): Likewise. * testsuite/ld-scripts/expr.exp: Run pr22267. * testsuite/ld-scripts/pr22267.d: New file. * testsuite/ld-scripts/pr22267.s: Likewise. * testsuite/ld-scripts/pr22267.t: Likewise.
2017-06-06ld: Allow section groups to be resolved as part of a relocatable linkAndrew Burgess1-0/+1
This commit adds a new linker feature: the ability to resolve section groups as part of a relocatable link. Currently section groups are automatically resolved when performing a final link, and are carried through when performing a relocatable link. By carried through this means that one copy of each section group (from all the copies that might be found in all the input files) is placed into the output file. Sections that are part of a section group will not match input section specifiers within a linker script and are forcibly kept as separate sections. There is a slight resemblance between section groups and common section. Like section groups, common sections are carried through when performing a relocatable link, and resolved (allocated actual space) only at final link time. However, with common sections there is an ability to force the linker to allocate space for the common sections when performing a relocatable link, there's currently no such ability for section groups. This commit adds such a mechanism. This new facility can be accessed in two ways, first there's a command line switch --force-group-allocation, second, there's a new linker script command FORCE_GROUP_ALLOCATION. If one of these is used when performing a relocatable link then the linker will resolve the section groups as though it were performing a final link, the section group will be deleted, and the members of the group will be placed like normal input sections. If there are multiple copies of the group (from multiple input files) then only one copy of the group members will be placed, the duplicate copies will be discarded. Unlike common sections that have the --no-define-common command line flag, and INHIBIT_COMMON_ALLOCATION linker script command there is no way to prevent group resolution during a final link, this is because the ELF gABI specifically prohibits the presence of SHT_GROUP sections in a fully linked executable. However, the code as written should make adding such a feature trivial, setting the new resolve_section_groups flag to false during a final link should work as you'd expect. bfd/ChangeLog: * elf.c (_bfd_elf_make_section_from_shdr): Don't initially mark SEC_GROUP sections as SEC_EXCLUDE. (bfd_elf_set_group_contents): Replace use of abort with an assert. (assign_section_numbers): Use resolve_section_groups flag instead of relocatable link type. (_bfd_elf_init_private_section_data): Use resolve_section_groups flag instead of checking the final_link flag for part of the checks in here. Fix white space as a result. * elflink.c (elf_link_input_bfd): Use resolve_section_groups flag instead of relocatable link type. (bfd_elf_final_link): Likewise. include/ChangeLog: * bfdlink.h (struct bfd_link_info): Add new resolve_section_groups flag. ld/ChangeLog: * ld.h (struct args_type): Add force_group_allocation field. * ldgram.y: Add support for FORCE_GROUP_ALLOCATION. * ldlex.h: Likewise. * ldlex.l: Likewise. * lexsup.c: Likewise. * ldlang.c (unique_section_p): Check resolve_section_groups flag not the relaxable link flag. (lang_add_section): Discard section groups when we're resolving groups. Clear the SEC_LINK_ONCE flag if we're resolving section groups. * ldmain.c (main): Initialise resolve_section_groups flag in link_info based on command line flags. * testsuite/ld-elf/group11.d: New file. * testsuite/ld-elf/group12.d: New file. * testsuite/ld-elf/group12.ld: New file. * NEWS: Mention new features. * ld.texinfo (Options): Document --force-group-allocation. (Miscellaneous Commands): Document FORCE_GROUP_ALLOCATION.
2017-05-18Treat a prefix of "$SYSROOT" in the same way as "=" when parsing linker ↵Nick Clifton1-0/+5
search paths. PR ld/21251 * ldfile.c (ldfile_add_library_path): If the path starts with $SYSROOT then use the sysroot as the real prefix. * ldlang.c (lang_add_input_file): Treat $SYSROOT in the same way as =. * ldlex.l: Add $SYSROOT as allow prefix for a filename. * ld.texinfo (-L): Document that $SYSROOT acts like = when prefixing a library search path. (INPUT): Likewise. * testsuite/ld-scripts/sysroot-prefix.exp: Add $SYSROOT prefix tests.
2017-01-04Use noyywrap option in lex files.Dilan Palauzov1-5/+1
ld PR 20958 * ldlex.l (option): Add noyywrap (yywrap): Delete. * ldlex.h (yywrap): Delete prototype. binutils PR 20958 * syslex.l (option): Add noyywrap (yywrap): Delete.
2017-01-02Update year range in copyright notice of all files.Alan Modra1-1/+1
2016-12-05Fix seg-fault in linker when passed a bogus input script.Nick Clifton1-2/+8
PR ld/20906 * ldlex.l: Check for bogus strings in linker scripts.
2016-07-05ld: track linker-definedness of symbolsJan Beulich1-4/+6
Keep "lineno" as zero while not processing any script, and use it being zero to set the "linker_def" field to true.
2016-04-18Add new NOCROSSREFS_TO linker script commandMatthew Fortune1-0/+1
NOCROSSREFS_TO is similar to the existing NOCROSSREFS command but only checks one direction of cross referencing. ld/ChangeLog * ld.texinfo: Document NOCROSSREFS_TO script command. * ldlang.h (struct lang_nocrossrefs): Add onlyfirst field. (lang_add_nocrossref_to): New prototype. * ldcref.c (check_local_sym_xref): Use onlyfirst to only look for symbols defined in the first section. (check_nocrossref): Likewise. * ldgram.y (NOCROSSREFS_TO): New script command. * ldlang.c (lang_add_nocrossref): Set onlyfirst to FALSE. (lang_add_nocrossref_to): New function. * ldlex.l (NOCROSSREFS_TO): New token. * NEWS: Mention NOCROSSREFS_TO. * testsuite/ld-scripts/cross4.t: New file. * testsuite/ld-scripts/cross5.t: Likewise. * testsuite/ld-scripts/cross6.t: Likewise. * testsuite/ld-scripts/cross7.t: Likewise. * testsuite/ld-scripts/crossref.exp: Run 4 new NOCROSSREFS_TO tests.
2016-01-01Copyright update for binutilsAlan Modra1-1/+1
2015-04-28Eat newlines inside INPUT statements in linker scriptsAndreas Schwab1-1/+1
ld/ PR ld/18344 * ldlex.l (INPUTLIST): Increment lineno on newline.
2015-01-02ChangeLog rotatation and copyright year updateAlan Modra1-1/+1
2014-10-15Allow unquoted = as the first character in ldscript input_list namesHans-Peter Nilsson1-9/+23
* ldlex.l (INPUTLIST): New start condition. (comment pattern, ",", "(", ")", "AS_NEEDED") ({FILENAMECHAR1}{FILENAMECHAR}*, "-l"{FILENAMECHAR}+) (quoted string pattern, whitespace pattern): Add INPUTLIST to valid start conditions. (<INPUTLIST>"="{FILENAMECHAR1}{FILENAMECHAR}*): New NAME rule. (ldlex_inputlist): New start-condition-setter function. * ldgram.y (input_list1): Rename from input_list. All recursive use changed. (input_list): New wrapper rule for input_list1, setting INPUTLIST lexer state for the duration of parsing input_list1. All this to say INPUT(=/path/to/file) and not be forced to use INPUT("=/path/to/file") whenever there's a need to force a sysroot- prefix. Still, IMHO it seems better to make use of a previously invalid syntax and not only change the meaning of quoted =-prefixed paths (though arguably that's not very useful before this patchset). This got a little bit hairier than I'd expected: I had to add a new lexer state (aka. start condition) to avoid a first "=" being lexed as the token "=", despite that not making sense in constructs expecting file-names in the first place. (The grammar doesn't allow for expressions in any part of those lists.) I guess I *could* have made it work using that token anyway, but I didn't like the idea that you would be able to separate the "=" from the rest of the file-name with whitespace.
2014-03-05Update copyright yearsAlan Modra1-1/+1
2013-08-15 * ldexp.c: Add LOG2CEIL() builtin function to linker script languageNick Clifton1-0/+1
* ldgram.y: Likewise * ldlex.l: Likewise * NEWS: Mention the new feature. * ld.texinfo: Document the new feature. * ld-scripts/log2.exp: New: Run the new log2 test. * ld-scripts/log2.s: Source for the new test. * ld-scripts/log2.t: Linker script for new test.
2013-07-19 * ldgram.y: Add ALIGN_WITH_INPUT output section attribute.Nick Clifton1-3/+2
* ldlang.c: Likewise. * ldlang.h: Likewise. * ldlex.l: Likewise. * mri.c: Likewise. * ld.texinfo: Document new feature. * NEWS: Mention new feature. * ld-scripts/script.exp: Run align with input test. * ld-scripts/align-with-input.t: New file. * ld-scripts/rgn-at8.d: Likewise. * ld-scripts/rgn-at8.t: Likewise.
2012-08-06 bfd/Maciej W. Rozycki1-0/+1
* elflink.c (bfd_elf_record_link_assignment): Remove --defsym symbols special case. ld/ * ldexp.h (etree_union): Add defsym member to the assign member structure. (exp_assign): Add hidden argument to prototype. * ldexp.c (exp_fold_tree_1): Use the defsym member to handle --defsym symbols. (exp_assop): Add defsym argument, initialize the defsym member of the assign structure. (exp_assign): Handle hidden symbols. (exp_defsym): Update to use the defsym argument to exp_assop. (exp_provide): Update to handle the defsym argument to exp_assop. * ldlex.l (HIDDEN): New token. * ldgram.y (HIDDEN): Likewise. (assignment, section): Update calls to exp_assign. * ldctor.c (ldctor_build_sets): Likewise. * mri.c (mri_format): Likewise. * ldlang.c (lang_insert_orphan, lang_leave_overlay): Likewise. (open_input_bfds): Remove --defsym symbols special case. * emultempl/beos.em (gld_${EMULATION_NAME}_set_symbols): Update call to exp_assign. * emultempl/pe.em (gld_${EMULATION_NAME}_set_symbols): Likewise. * emultempl/pep.em (gld_${EMULATION_NAME}_set_symbols): Likewise. * emultempl/spuelf.em (spu_place_special_section): Likewise. * emultempl/xtensaelf.em (ld_xtensa_insert_page_offsets): Likewise. * ld.texinfo (Assigning Values to Symbols): Add HIDDEN. (HIDDEN): New subsection.
2012-07-10Add SORT_NONE and don't sort sort .init/.fini sectionsH.J. Lu1-0/+1
ld/ PR ld/14156 * NEWS: Mention SORT_NONE. * ld.h (sort_type): Add by_none. * ld.texinfo: Document SORT_NONE. * ldgram.y: Handle SORT_NONE. * ldlang.c (update_wild_statements): Handle by_none. Don't sort .init/.fini sections. * ldlex.l: Add SORT_NONE. ld/testsuite/ PR ld/14156 * ld-elf/fini0.s: New file. * ld-elf/fini1.s: Likewise. * ld-elf/fini2.s: Likewise. * ld-elf/fini3.s: Likewise. * ld-elf/finin.s: Likewise. * ld-elf/foo0.s: Likewise. * ld-elf/foo1.s: Likewise. * ld-elf/foo2.s: Likewise. * ld-elf/foo3.s: Likewise. * ld-elf/foon.s: Likewise. * ld-elf/init0.s: Likewise. * ld-elf/init1.s: Likewise. * ld-elf/init2.s: Likewise. * ld-elf/init3.s: Likewise. * ld-elf/initn.s: Likewise. * ld-elf/pr14156a.d: Likewise. * ld-elf/pr14156b.d: Likewise. * ld-elf/pr14156c.d: Likewise. * ld-elf/pr14156c.t: Likewise.
2012-03-08 PR ld/10340Alan Modra1-1/+5
* ldfile.c (is_sysrooted_pathname): Remove notsame param. (ldfile_add_library_path): Don't set sysrooted flag. (ldfile_open_file_search): Likewise, and don't copy them. (try_open): Delete exten and code handling such. Add sysrooted param and return whether path is in sysroot. (ldfile_find_command_file): Delete extend param. Add sysrooted param. Rename local var. Update try_open calls. (ldfile_open_command_file_1): Pass sysrooted to lex_push_file. * ldfile.h (search_dirs_type): Remove sysrooted field. * ldlang.c (new_afile): Always set sysrooted from input_flags. (load_symbols): Don't set input_flags.sysrooted. * ldlang.h (struct lang_input_statement_flags): Revise sysrooted comment. * ldlex.h (lex_push_file): Update prototype. * ldlex.l (sysrooted_stack): New array. (EOF): Pop input_flags.sysrooted. (lex_push_file): Add sysrooted param. Save and set input_flags.sysrooted.
2012-02-17 PR ld/13343Alan Modra1-12/+15
* ld.h (parsing_defsym): Delete. * ldexp.c (exp_intop, exp_bigintop, exp_relop): Set type.filename. (fold_binary, fold_name, exp_fold_tree_1, exp_get_vma, exp_get_fill, exp_get_abs_int): Add tree arg for %S in error messages. Don't fudge lineno. (exp_binop, exp_unop, exp_nameop, exp_assop, exp_assert): Copy type.filename from sub-tree. (exp_trinop): Likewise, and use "cond" rather than "lhs". * ldexp.h (node_type): Add filename field to struct. * ldfile.c (ldfile_input_filename): Delete. Remove all refs. * ldfile.h (ldfile_input_filename): Delete. * ldgram.y (phdr_type, phdr_qualifiers, yyerror): Add NULL arg for %S in error messages. * ldemul.c (syslib_default, hll_default): Likewise. * ldlang.c (lang_memory_region_lookup, lang_memory_region_alias, lang_get_regions, lang_new_phdr): Likewise. (lang_size_sections_1): Pass addr_tree for %S. * ldlex.h (lex_redirect): Update prototype. (ldlex_filename): Declare. * ldlex.l (<EOF>): Don't set ldfile_input_filename. (lex_redirect): Add fake_filename and count params. Push fake_filename to file_name_stack and init lineno from count. (ldlex_filename): New function. (lex_warn_invalid): Use above. * ldmain.c (main): Update lex_redirect call. * ldmisc.c (vfinfo <%S>): Take file name and line number from etree_type arg, or use current if arg is NULL. * lexsup.c (parsing_defsym): Delete. (parse_args <OPTION_DEFSYM>): Update lex_redirect call.
2011-07-11include/ChangeLogCatherine Moore1-0/+1
2011-07-11 Catherine Moore <clm@codesourcery.com> * bfdlink.h (flag_type): New enumeration. (flag_info_list): New structure. (flag_info): New structure. bfd/ChangeLog 2011-07-11 Catherine Moore <clm@codesourcery.com> * aout-adobe.c (aout_32_bfd_lookup_section_flags): New definition. * aout-target.h (MY_bfd_lookup_section_flags): New definition. * aout-tic30.c (MY_bfd_lookup_section_flags): New definition. * bfd-in2.h: Regenerated. * bfd.c (bfd_lookup_section_flags): New definition. * binary.c (binary_bfd_lookup_section_flags): New definition. * bout.c (b_out_bfd_lookup_section_flags): New definition. * coff-alpha.c (_bfd_ecoff_bfd_lookup_section_flags): New definition. * coff-mips.c (_bfd_ecoff_bfd_lookup_section_flags): New definition. * coff-rs6000.c (rs6000coff_vec): Include bfd_generic_lookup_section_flags. (pmac_xcoff_vec): Likewise. * coffcode.h (coff_bfd_lookup_section_flags): New definition. * coff64-rs6000.c (rs6000coff64_vec): Include bfd_generic_lookup_section_flags. (aix5coff64_vec): Likewise. * ecoff.c (bfd_debug_section): Initialize flag_info field. * elf-bfd.h (elf_backend_lookup_section_flags_hook): Declare. (bfd_elf_lookup_section_flags): Declare. * elflink.c (bfd_elf_lookup_section_flags): New function. * elfxx-target.h (bfd_elfNN_bfd_lookup_section_flags): Define. (elf_backend_lookup_section_flags_hook): Define. (elf_backend_data): Add elf_backend_lookup_section_flags_hook. * i386msdos.c (msdos_bfd_lookup_section_flags): New define. * i386os9k.c (os9k_bfd_lookup_section_flags): New define. * ieee.c (ieee_bfd_lookup_section_flags): New define. * ihex.c (ihex_bfd_lookup_section_flags): New define. * libbfd-in.h (_bfd_nolink_bfd_lookup_section_flags): Declare. (bfd_generic_lookup_section_flags): Declare. * libbfd.h: Regenerated. * mach-o-target.c (bfd_mach_o_bfd_lookup_section_flags): New. * mmo.c (mmo_bfd_lookup_section_flags): New definition. * nlm-target.h (nlm_bfd_lookup_section_flags): New definition. * oasys.c (oasys_bfd_lookup_section_flags): New definition. * pef.c (bfd_pef_bfd_lookup_section_flags): New definition. * plugin.c (bfd_plugin_bfd_lookup_section_flags): New definition. * ppcboot.c (ppcboot_bfd_lookup_section_flags): New definition. * reloc.c (bfd_generic_lookup_section_flags): New function. * som.c (som_bfd_lookup_section_flags): New definition. * srec.c (srec_bfd_lookup_section_flags): New definition. * targets.c (flag_info): Declare. (NAME##_bfd_lookup_section_flags): Add to LINK jump table. (_bfd_lookup_section_flags): New. * tekhex.c (tekhex_bfd_lookup_section_flags): New definition. * versados.c (versados_bfd_lookup_section_flags): New definition. * vms-alpha.c (alpha_vms_bfd_lookup_section_flag): New definition. * xsym.c (bfd_sym_bfd_lookup_section_flags): New definition. ld/ChangeLog 2011-07-11 Catherine Moore <clm@codesourcery.com> * ld.h (section_flag_list): Add field to struct wildcard_spec. * ld.texinfo (INPUT_SECTION_FLAGS): Document. * ldgram.y (flag_info_list, flag_info): Add to union. (INPUT_SECTION_FLAGS): New token. (wildcard_spec): Initialize section_flag_list to NULL for each alternative. (sect_flag_list, sect_flags): New rules. (input_section_spec_no_keep): Add alternatives to recognize sect_flags. * ldlang.c (walk_wild_consider_section): Initialize section_flag_info field of the section struct. (lang_add_section): Check input section flags. (lang_add_wild): Initialize section_flag_list field of the statement struct. * ldlang.h (lang_input_statement_struct): Add section_flag_list field. (lang_wild_statement_struct): Likewise. * ldlex.l (INPUT_SECTION_FLAGS): New token. * mri.c (mri_draw_tree): Initialize section_flag_list to NULL. * NEWS: Announce INPUT_SECTION_FLAGS enhancement. ld/testsuite/ChangeLog 2011-07-11 Catherine Moore <clm@cm00re.com> * ld-scripts/section-flags-1.s: New. * ld-scripts/section-flags-1.t: New. * ld-scripts/section-flags-2.s: New. * ld-scripts/section-flags-2.t: New. * ld-scripts/section-flags.exp: New.
2011-03-29 PR ld/12613Alan Modra1-1/+1
* ldlex.l (lex_warn_invalid): Don't assume char is unsigned.
2011-03-28Add support for DragonFlyBSD target.Nick Clifton1-0/+2
2011-01-13Update copyright dates.Alan Modra1-2/+2
2011-01-13 PR ld/12356Alan Modra1-0/+1
* ld.texinfo (Miscellaneous Commands): Describe LD_FEATURE. (Expression Section): Update. * ld.h (ld_config_type): Add sane_expr. * ldgram.y (ifile_p1): Add LD_FEATURE. * ldlex.l (LD_FEATYRE): New. * ldemul.c (after_parse_default): Delete code handling ld_compatibility. * ldexp.h (struct ldexp_control): Delete uses_defined. * ldexp.c: Remove all uses of uses_defined. (fold_name): Test config.sane_expr rather than ld_compatibility. (exp_fold_tree_1): Likewise. Adjust handling of assignments during first phase. * ldlang.h (ld_compatibility): Delete. (lang_ld_feature): Declare. * ldlang.c (ld_compatibility): Delete. (open_input_bfds): Only handle assignments for --defsym. (lang_ld_feature): New function.
2010-12-15Add SORT_BY_INIT_PRIORITY.H.J. Lu1-0/+1
bfd/ 2010-12-15 H.J. Lu <hongjiu.lu@intel.com> * elf.c (_bfd_elf_new_section_hook): Special handling for .init_array/.fini_array output sections. ld/ 2010-12-15 H.J. Lu <hongjiu.lu@intel.com> * Makefile.am (GENSCRIPTS): Add @enable_initfini_array@. * NEWS: Mention SORT_BY_INIT_PRIORITY. * configure.in: Add AC_CANONICAL_BUILD. Add --enable-initfini-array. * genscripts.sh (ENABLE_INITFINI_ARRAY): New. * ld.h (sort_type): Add by_init_priority. * ld.texinfo: Document SORT_BY_INIT_PRIORITY. * ldgram.y (SORT_BY_INIT_PRIORITY): New. (wildcard_spec): Handle SORT_BY_INIT_PRIORITY. * ldlang.c (get_init_priority): New. (compare_section): Use get_init_priority for by_init_priority. * ldlex.l (SORT_BY_INIT_PRIORITY): New. * scripttempl/elf.sc: Support ENABLE_INITFINI_ARRAY. * Makefile.in: Regenerated. * aclocal.m4: Regenerated. * config.in: Likewise. * configure: Likewise. ld/testsuite/ 2010-12-15 H.J. Lu <hongjiu.lu@intel.com> * ld-elf/elf.exp (array_tests): Add init-mixed. (array_tests_static): Likewise. Also delete tmpdir/init-mixed. * ld-elf/init-mixed.c: New. * ld-elf/init-mixed.out: Likewise.
2010-08-31 * ldlex.l (WILDCHAR): Add the caret and exclamation pointNick Clifton1-1/+1
characters, so that they can be used inside regexps.
2010-02-10ld/Richard Sandiford1-1/+0
* Makefile.am (CFILES): Add ldlex-wrapper.c. (OFILES): Replace ldlex.c with ldlex-wrapper.c. (ldlex.o): Replace with... (ldlex-wrapper.o): ...this new rule. (EXTRA_ld_new_SOURCES): Add ldlex.l. (ld_new_SOURCES): Replace ldlex.l with ldlex-wrapper.c. * Makefile.in: Regenerate. * ldlex.l (sysdep.h): Don't include here. * ldlex-wrapper.c: New file.
2009-11-19binutils/Ben Elliston1-0/+2
* arlex.l: Enable noinput, nounput flex options. * syslex.l: Likewise. ld/ * ldlex.l: Enable nounput flex option.
2009-10-14* ldlex.l (yy_input): Remove second argument and return the valueAndreas Schwab1-8/+9
instead. (YY_INPUT): Adjust.
2009-09-02update copyright datesAlan Modra1-1/+1
2009-03-02 * ldgram.y: Add support for REGION_ALIAS operator.Nick Clifton1-1/+2
* ldlang.c: Likewise. * ldlang.h: Likewise. * ldlex.l: Likewise. * NEWS: Mention the new feature. * ld.texinfo: Document the new feature. * ld-scripts/regions-alias-1.t: New file. * ld-scripts/regions-alias-2.t: New file. * ld-scripts/regions-alias-3.t: New file. * ld-scripts/regions-alias-4.t: New file. * ld-scripts/script.exp: Run region alias tests.
2008-07-06 * ld.texinfo (File Commands): Document that INCLUDE can be used inNathan Sidwell1-1/+1
several different places. * ldgram.y (statement, memory_spec, section): Allow INCLUDE. (memory, memory_spec_list): Simplify BNF (memory_spec_list_opt): New rule. * ldlex.l (INCLUDE): Recognize in EXPRESSION. testsuite/ * ld-scripts/include-1.d: New. * ld-scripts/include-1.t: New. * ld-scripts/include-data.t: New. * ld-scripts/include-mem.t: New. * ld-scripts/include-ram.t: New. * ld-scripts/include-sections.t: New. * ld-scripts/include-subdata.t: New. * ld-scripts/include.exp: New. * ld-scripts/include.s: New.
2008-01-25ld/Alan Modra1-0/+3
* ld.texinfo (INSERT): Describe. * ldgram.y (ldgram_in_script, ldgram_had_equals): Delete. (INSERT_K, AFTER, BEFORE): Add as tokens. (ifile_p1): Handle INSERT statements. (saved_script_handle, force_make_executable): Move to.. * ldmain.c: ..here. (previous_script_handle): New global var. * ldmain.h (saved_script_handle, force_make_executable): Declare. (previous_script_handle): Likewise. * ldlex.l (INSERT_K, AFTER, BEFORE): Add tokens. * lexsup.c (parge_args <-T>): Set previous_script_handle. * ldlang.c (lang_for_each_statement_worker): Handle insert statement. (map_input_to_output_sections, print_statement): Likewise. (lang_size_sections_1, lang_do_assignments_1): Likewise. (insert_os_after): New function, extracted from.. (lang_insert_orphan): ..here. (process_insert_statements): New function. (lang_process): Call it. (lang_add_insert): New function. * ldlang.h (lang_insert_statement_enum): New. (lang_insert_statement_type): New. (lang_statement_union_type): Add insert_statement. (lang_add_insert): Declare. ld/testsuite/ * ld-spu/ovl.lnk: Delete overlay. * ld-spu/ovl1.lnk: New file. * ld-spu/ovl2.lnk: New file. * ld-spu/ovl.d: Update. * ld-spu/ovl2.d: Update.
2007-07-06Update sources to GPLv3Nick Clifton1-13/+9
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