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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.
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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.
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YY_INPUT returns 0 on end of input, not EOF.
PR 24827
* ldlex.l (comment): Check for 0 return from input(), not EOF.
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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.
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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.
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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.
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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.
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* 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.
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* 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.
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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.
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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.
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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.
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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.
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PR ld/20906
* ldlex.l: Check for bogus strings in linker scripts.
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Keep "lineno" as zero while not processing any script, and use it being
zero to set the "linker_def" field to true.
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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.
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ld/
PR ld/18344
* ldlex.l (INPUTLIST): Increment lineno on newline.
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* 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.
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* 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.
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* 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.
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* 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.
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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.
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* 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.
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* 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.
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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.
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* ldlex.l (lex_warn_invalid): Don't assume char is unsigned.
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* 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.
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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.
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characters, so that they can be used inside regexps.
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* 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.
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* arlex.l: Enable noinput, nounput flex options.
* syslex.l: Likewise.
ld/
* ldlex.l: Enable nounput flex option.
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instead.
(YY_INPUT): Adjust.
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* 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.
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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.
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* 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.
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* ldexp.c (exp_print_token, foldname): Likewise.
* ld.texinfo: Likewise.
ld/testsuite/
* ld-scripts/alignof.s: New.
* ld-scripts/alignof.t: New
* ld-scripts/alignof.exp: New.
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contain commas in EXP env.
* ldgram.y (extern_name_list): Push to EXP env, move body to ...
(extern_name_list_body): ... here.
(script_file, ifile_list): Reformat.
(statement): Add ASSERT.
testsuite:
* ld-scripts/assert.t: Add additional cases.
* ld-scripts/extern.t, ld-scripts/extern.s,
ld-scripts/extern.exp: New.
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Many files: Include sysdep.h before bfd.h.
* Makefile.am: Run "make dep-am".
* Makefile.in: Regenerate.
binutils/
* bucumm.h: Split off host dependencies to..
* sysdep.h: ..here.
Many files: Include sysdep.h. Remove duplicate headers and reorder.
* Makefile.am: Run "make dep-am".
* Makefile.in: Regenerate.
ld/
Many files: Include sysdep.h first. Remove duplicate headers.
* Makefile.am: Run "make dep-am".
* Makefile.in: Regenerate.
opcodes/
* Makefile.am: Run "make dep-am".
* Makefile.in: Regenerate.
* ns32k-dis.c: Include sysdep.h first.
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