Ian Lance Taylor [Tue, 26 Jul 1994 17:18:37 +0000 (17:18 +0000)]
Add support for creating shared libraries under i386 ELF and SPARC
ELF. Based on patches by Eric Youngdale <[email protected]>.
* libelf.h (struct elf_link_hash_entry): Remove copy_offset field.
Add got_offset and plt_offset fields.
(ELF_LINK_HASH_REF_DYNAMIC_MULTIPLE): Don't define.
(ELF_LINK_HASH_DEF_DYNAMIC_MULTIPLE): Don't define.
(ELF_LINK_HASH_NEEDS_COPY): Define.
(struct elf_backend_data): Add check_relocs field.
(struct bfd_elf_section_data): Change relocs from PTR to
Elf_Internal_Rela *.
(struct elf_obj_tdata): Add local_got_offsets field.
(elf_local_got_offsets): Define accessor macro.
(bfd_elf32_link_create_dynamic_sections): Declare.
(bfd_elf32_link_record_dynamic_symbol): Declare.
(bfd_elf64_link_create_dynamic_sections): Declare.
(bfd_elf64_link_record_dynamic_symbol): Declare.
* elfcode.h (elf_slurp_reloc_table): Don't use the section data
relocs field.
(elf_link_record_dynamic_symbol): Make globally visible. Use
macro to rename to NAME(bfd_elf,link_record_dynamic_symbol).
(elf_link_add_object_symbols): If creating a shared library, put
make all local symbols dynamic. Don't bother with the
DYNAMIC_MULTIPLE flags. Call the check_relocs backend function if
it is defined.
(elf_link_create_dynamic_sections): Make globally visible. Use
macro to rename to NAME(bfd_elf,link_create_dynamic_sections). If
creating a shared library, make sure that _DYNAMIC is added as a
dynamic symbol.
(elf_link_read_relocs): New function.
(NAME(bfd_elf,record_link_assignment)): If creating a shared
library, always create symbols, and always make them dynamic.
(elf_bfd_final_link): Permit creation of shared libraries.
(elf_link_input_bfd): Use elf_link_read_relocs to get the relocs.
* elf.c (_bfd_elf_link_hash_newfunc): Don't initialize
copy_offset. Initialize got_offset and plt_offset.
* elf32-target.h (elf_backend_check_relocs): Define as 0 if not
defined.
(elf32_bed): Initialize check_relocs field.
* elf64-target.h (elf_backend_check_relocs): Define as 0 if not
defined.
(elf64_bed): Initialize check_relocs field.
* elf32-i386.c (elf_howto_table): Change R_386_PLT32 and
R_386_GOTPC to be pc_relative and pcrel_offset.
(elf_i386_pic_plt0_entry): Define.
(elf_i386_pic_plt_entry): Define.
(elf_i386_create_dynamic_sections): Create a .got.plt section, and
define _GLOBAL_OFFSET_TABLE_ at the start of it. If creating a
shared library, make sure that _GLOBAL_OFFSET_TABLE_ is added as a
dynamic symbol. Don't create .rel.bss if creating a shared
library.
(elf_i386_check_relocs): New function.
(elf_i386_adjust_dynamic_symbol): Don't make a PLT entry if the
symbol already has one. When making a PLT entry, set plt_offset.
Don't create a copy reloc when creating a shared library. Don't
set copy_offset, just set ELF_LINK_HASH_NEEDS_COPY.
(elf_i386_allocate_dynamic_section): Remove.
(elf_i386_size_dynamic_sections): Look through all the sections
rather than assuming we know their names. Remove any empty reloc
or plt sections. Only add a DT_DEBUG entry if not creating a
shared library. Only add a DT_PLTGOT entry if there is a PLT.
Add a DT_TEXTREL entry if required.
(elf_i386_relocate_section): Permit undefined symbols when
creating a shared library. Handle the special relocation types
specially.
(elf_i386_finish_dynamic_symbol): Create a PLT entry if plt_offset
is set. If creating a shared library, produce a PIC PLT entry.
Only mark a PLT symbol as undefined if it was not defined by a
regular object file. Create a GOT entry if got_offset is set.
Create a copy reloc if ELF_LINK_HASH_NEEDS_COPY is set.
(elf_i386_finish_dynamic_sections): Change the handling of
DT_RELSZ to simply subtract out the size of .rel.plt. If creating
a shared library, produce PIC PLT code.
(elf_backend_check_relocs): Define.
* elf32-sparc.c (elf_sparc_howto_table): Change R_SPARC_GOT10,
R_SPARC_GOT22, and R_SPARC_PC10 to not warn about reloc overflow.
(elf32_sparc_create_dynamic_sections): If creating a shared
library, make sure that _GLOBAL_OFFSET_TABLE_ is added as a
dynamic symbol, and set the type to STT_OBJECT. Likewise for
_PROCEDURE_LINKAGE_TABLE_. Don't create .rel.bss if creating a
shared library.
(elf32_sparc_check_relocs): New function.
(elf32_sparc_adjust_dynamic_symbol): Don't make a PLT entry if the
symbol already has one. When making a PLT entry, set plt_offset.
Don't create a copy reloc when creating a shared library. Don't
set copy_offset, just set ELF_LINK_HASH_NEEDS_COPY.
(elf32_sparc_allocate_dynamic_section): Remove.
(elf32_sparc_size_dynamic_sections): Look through all the sections
rather than assuming we know their names. Only add a DT_DEBUG
entry if not creating a shared library. Add a DT_TEXTREL entry if
required.
(elf32_sparc_relocate_section): Permit undefined symbols when
creating a shared library. Handle the special relocation types
specially.
(elf32_sparc_finish_dynamic_symbol): Create a PLT entry if plt_offset
is set. Only mark a PLT symbol as undefined if it was not defined
by a regular object file. Create a GOT entry if got_offset is
set. Create a copy reloc if ELF_LINK_HASH_NEEDS_COPY is set.
(elf32_sparc_finish_dynamic_sections): Store dynobj in a local
variable.
(elf_backend_check_relocs): Define.
* gdb.base/opaque.exp: use runto instead of messing around with
breakpoints.
* gdb.base/bitfields.exp: restart between tests on netware targets
because breakpoints aren't relocated after target death. Run
processes to completion.
* gdb.base/{opaque,watchpoint}.exp: Use gdb_run_cmd.
Fred Fish [Sun, 24 Jul 1994 16:56:45 +0000 (16:56 +0000)]
* Makefile.in: Remove extra tabs that confuse some versions
of "make". Use the newly built gdb to test with by default,
rather than the first one in the tester's search path.
Stu Grossman [Sat, 23 Jul 1994 00:53:28 +0000 (00:53 +0000)]
* Makefile.in: Add stuff to build nlmstub.
* Add rule for annotate.o to keep Sun make happy.
* configure.in: Add config for powerpc/Netware.
* partial-stab.h (near N_SO): Don't call START_PSYMTAB with null
filename. This speeds up handling of trailing N_SO stabs (they
mark the end of a .o file).
* target.c, target.h: Change the way pushing and popping of
targets work to support target overlays and inheritance.
* corelow.c, hppa-tdep.c, inflow.c, remote-nindy.c, utils.c:
Fixup references to current_target, due to previous changes.
* config/i386/tm-i386nw.h: Enable longjmp support. More work is
needed to get the address of longjmp out of the target.
Ken Raeburn [Fri, 22 Jul 1994 20:56:31 +0000 (20:56 +0000)]
* nm.c (numeric_forward): Treat undefined symbols as "less than" defined
symbols with zero values. If numeric values are equal, or both symbols are
undefined, sort alphabetically. Don't assume that the difference of two
bfd_vma values will truncate to "int" and still have the same sign.
(numeric_reverse): Call numeric_forward and negate the result.
(print_symbol_info_bsd): For undefined symbols, print leading spaces equivalent
to the width of a printed bfd_vma, rather than assuming that 8 will look right.
Ian Lance Taylor [Fri, 22 Jul 1994 20:55:45 +0000 (20:55 +0000)]
* scripttempl/elf.sc: Use PROVIDE to define etext, edata, and end.
Add a new script operator, PROVIDE, to define a symbol only if it
is needed.
* ldgram.y (PROVIDE): New token.
(assignment): Accept PROVIDE.
* ldlex.l (PROVIDE): New token.
* ldexp.h (node_type): Add etree_provide to node_class enum.
(exp_provide): Declare.
* ldexp.c (exp_fold_tree): Handle etree_provide.
(exp_provide): New function.
(exp_print_tree): Handle etree_provide.
* ld.texinfo: Document PROVIDE.
Ian Lance Taylor [Fri, 22 Jul 1994 18:53:23 +0000 (18:53 +0000)]
* aoutx.h (aout_link_check_ar_symbols): When changing a symbol to
common, set the alignment.
(aout_link_add_symbols): Restrict the alignment of a common symbol
to the alignment power given by the architecture.
* elf.c (_bfd_elf_link_hash_newfunc): Don't initialize align. Do
initialize copy_offset.
* elf32-i386.c (elf_i386_adjust_dynamic_symbol): Use copy_offset
field rather than align field. Get alignment using bfd_log2
rather than switch.
* elf32-sparc.c (elf32_sparc_adjust_dynamic_symbol): Likewise.
* elf32-i386.c (elf_i386_finish_dynamic_symbol): Use copy_offset,
not align.
* elf32-sparc.c (elf32_sparc_finish_dynamic_symbol): Likewise.
Ian Lance Taylor [Fri, 22 Jul 1994 18:46:28 +0000 (18:46 +0000)]
* ldlang.c (lang_common): Pass desired alignment to
lang_one_common as power of two.
(lang_one_common): Get common symbol alignment from linker hash
table entry. Treat desired alignment as a power of two.
Ian Lance Taylor [Fri, 22 Jul 1994 16:23:35 +0000 (16:23 +0000)]
* ldlang.c (wild_section): Attach all section with the given name,
not just the first one. If there is no name, attach all sections
even if the SEC_IS_COMMON flag is set.
Per Bothner [Thu, 21 Jul 1994 21:11:57 +0000 (21:11 +0000)]
* config.sub (case $basic_machine): Re-order the cases, to match
the order in the FSF version (which is mostly alphabethical).
Merge in some additions and changes from the FSF.
Ian Lance Taylor [Wed, 20 Jul 1994 19:55:36 +0000 (19:55 +0000)]
* ld.h (args_type): Add field rpath.
* lexsup.c (S_ISDIR): Define if not already defined.
(parse_args): Add support for -rpath. If -R is used to name a
directory, treat it as -rpath for Solaris compatibility.
* emultempl/elf32.em (gld${EMULATION_NAME}_before_allocation):
Pass command_line.rpath to bfd_elf32_size_dynamic_sections.
* ldmain.c (main): Initialize command_line.rpath to NULL.
* ld.texinfo: Document -rpath option.
Ian Lance Taylor [Wed, 20 Jul 1994 19:51:18 +0000 (19:51 +0000)]
* elfcode.h (NAME(bfd_elf,size_dynamic_sections)): Add rpath
argument. If it is not NULL, use it to set DT_RPATH.
* bfd-in.h (bfd_elf32_size_dynamic_sections): Update prototype.
(bfd_elf64_size_dynamic_sections): Likewise.
* bfd-in2.h: Rebuilt.
Changed pattern in gdb_run_cmd to match up to the first newline only.
The old pattern used ".*$", which could, and did, swallow up output
that we were attempting to match elsewhere.
* gdb.base/bitfields.exp: Simplify by using delete_breakpoints and
gdb_test.
* lib/gdb.exp (gdb_test): if match times out, don't call fail if
message is "".
* gdb.base/corefile.exp: Execute coremaker to generate core dump.
* gdb.base/Makefile.in: Don't try to generate a core dump, we
might testing a cross development system.
Stan Shebs [Sun, 17 Jul 1994 21:08:42 +0000 (21:08 +0000)]
Harris CX/UX support, from Bob Rusk ([email protected]).
* configure.in (m88*-harris-cxux*): New configuration.
* cxux-nat.c, config/m88k/cxux.mh, config/m88k/cxux.mt,
config/m88k/xm-cxux.h, config/m88k/tm-cxux.h, config/m88k/nm-cxux.h:
New files.
* config/m88k/tm-m88k.h: Add comment about Harris OS.
(TARGET_WRITE_PC): Pass pid through to register writers.
* configure.in (m68*): Put vendor-only-specified host configs
after vendor-and-os-specified configs.
(m68*-atari-sysv4*, m68*-cbm-sysv4*): Replace with m68*-*-sysv4.
Ian Lance Taylor [Sun, 17 Jul 1994 02:36:11 +0000 (02:36 +0000)]
* objdump.c (slurp_dynamic_symtab): Try to get the dynamic symbols
even if the bfd is not marked DYNAMIC. ELF executables are not
marked DYNAMIC, but do have dynamic symbols.
Ian Lance Taylor [Sun, 17 Jul 1994 02:15:24 +0000 (02:15 +0000)]
* libelf.h (ELF_LINK_HASH_DEFINED_WEAK): Define.
* elfcode.h (elf_link_add_object_symbols): If symbol is defined as
weak, set ELF_LINK_HASH_DEFINED_WEAK.
(elf_link_output_extsym): If symbol is defined as weak, mark it
STB_WEAK.
Ian Lance Taylor [Sun, 17 Jul 1994 01:15:42 +0000 (01:15 +0000)]
* libelf.h (struct bfd_elf_section_data): Add relocs field.
(shdr_name): Remove; unused.
* elfcode.h (elf_slurp_reloc_table): Rewrote to handle both REL
and RELA relocs. Free up the unswapped relocs. Permit the relocs
to be cached in the section_data. Correct the reloc address.
(elf_slurp_reloca_table): Remove.
(elf_canonicalize_reloc): Rewrote.
(elf_link_input_bfd): Permit the relocs to be cached in the
section data.
Stan Shebs [Sun, 17 Jul 1994 00:00:36 +0000 (00:00 +0000)]
* inferior.h (ARCH_NUM_REGS): New macro, actual number of
registers in use by the inferior.
* coredep.c (fetch_core_registers, register_addr): Use it.
* findvar.c (registers_changed, registers_fetched,
read_register_bytes): Ditto.
* infcmd.c (do_registers_info, registers_info): Ditto.
* infptrace.c (fetch_inferior_registers,
store_inferior_registers): Ditto.
* stack.c (frame_info): Ditto.
* coredep.c (CORE_REGISTER_ADDR): New macro.
(fetch_core_registers): Use it.
Stan Shebs [Sat, 16 Jul 1994 22:57:23 +0000 (22:57 +0000)]
* breakpoint.c (ignore, condition): Add usage notes to help strings.
* symfile.c (add-symbol-file): Add usage note to help string.
(add_shared_symbol_files_command): New command.
Stan Shebs [Sat, 16 Jul 1994 21:02:53 +0000 (21:02 +0000)]
* configure.host (m68*-atari-sysv4*): New host.
(m68*-cbm-sysv4*): Use m68kv4 instead of amix.
* hosts/amix.h: Remove.
* hosts/m68kv4.h: New file, was amix.h.
Stan Shebs [Fri, 15 Jul 1994 23:53:04 +0000 (23:53 +0000)]
Stop printing at null char option, from Oliver Meyer
([email protected]).
* valprint.h, valprint.c (stop_print_at_null): New global.
* valprint.c (_initialize_valprint): New print set subcommand
"null-stop".
* c-valprint.c (c_val_print): If stop_print_at_null is on, and
printing a char array, adjust the number of chars to print.
Ken Raeburn [Fri, 15 Jul 1994 23:13:10 +0000 (23:13 +0000)]
* lib/gas-defs.exp (run_dump_test): New routine for running the
assembler, running objdump or nm (not fully supported) on the
resulting object file, and comparing the results against a file of
regular expressions in the test suite, all in one command.
(fail_phase, slurp_options): New auxiliary routines.
(regexp_diff): Always return a value. Fix bugs in actually doing
the regexp test.
Should make it even easier to write gas test cases, giving Ian even less
excuse for not doing so. :-)
Stan Shebs [Fri, 15 Jul 1994 21:37:30 +0000 (21:37 +0000)]
From Kevin A. Buettner ([email protected]).
* m88k-tdep.c (examine_prologue): Modified to handle prologues for
pic code in addition to prologues where an instruction from the
prologue gets moved into the delay slot of a branch instruction
immediately following the prologue. A table of potential prologue
instructions (prologue_insn_tbl) is now used for picking apart a
function prologue.
(frame_find_saved_regs): Changed the way in which limit gets set
so that the delay slot of branch instructions immediately
following the prologue gets examined.
(pushed_size, store_parm_word, store_parm, push_parameters,
collect_returned_value): Deleted.
* coffgrok.c (do_where): Make data with no type 'int'.
(do_define): Keep info on source file of a symbol.
* coffgrok.h (coff_symbol): New field.
* srconv.c (PROGRAM_VERSION): Now 1.3
(wr_rl): Use external ref number for symbol.
(wr_dus): Only keep one source file per debug unit.
(wr_dln): Always emit line numbers for first source file,
(wr_globals): Emit globals in the du of their owning source file.
Stan Shebs [Thu, 14 Jul 1994 21:34:09 +0000 (21:34 +0000)]
* dbxread.c: Don't include libbfd.h.
* dwarfread.c, elfread.c somread.c: Don't include libbfd.h,
<time.h>, or <sys/types.h>.
* elfread.c (elf_symfile_read): Use only standard BFD functions to
collect information about the stab and stab string sections.
Stan Shebs [Thu, 14 Jul 1994 02:15:39 +0000 (02:15 +0000)]
Breakpoint hit counts, from Bob Rusk ([email protected]).
* breakpoint.h (hit_count): New breakpoint field.
* breakpoint.c (show_breakpoint_hit_counts): New variable.
(clear_breakpoint_hit_counts): New function.
(bpstat_stop_status): Increment the hit count.
(breakpoint_1): Display the hit count.
* infcmd.c (run_command): Reset breakpoint hit counts.
* target.c (generic_mourn_inferior): Don't clear ignore counts if
displaying hit counts.