forked from Imagelibrary/binutils-gdb
1594e052d4
elf32-xgate.c contains many functions that are only stubs and elf32-xgate.h contains unused declarations. While this might be reasonable for the initial commit of a port with subsequent work fleshing out the stubs, xgate has only had two minor target specific patches since the initial commit over six years ago. The rest of the changes have been general maintenance work applied to all ELF targets, and some of this work could have been avoided if the stubs hadn't been there. So this patch removes all the stubs. I've kept the functionality of the old elf32_xgate_add_symbol_hook, implemented in elf32_xgate_backend_symbol_processing. Presumably, that's to set the symbol st_target_internal flag for use in elf32-m68hc1x.c:elf32_m68hc11_relocate_section. The empty elf32_xgate_relocate_section meant that xgate had no linker. Or at least, no linker relocation processing. Deleting the elf_backend_relocate_section define means the target will now use the generic linker reloc processing. How good that is will depend on the accuracy of the reloc howtos.. I haven't updated the ld testsuite to xfail tests expected to fail for generic elf targets. bfd/ * elf32-xgate.h: Delete. * elf32-xgate.c: Delete unnecessary forward declarations, add two that are now needed. (xgate_elf_bfd_link_hash_table_create) (xgate_elf_bfd_link_hash_table_free) (xgate_elf_set_mach_from_flags, struct xgate_scan_param) (stub_hash_newfunc, elf32_xgate_add_symbol_hook) (elf32_xgate_setup_section_lists, elf32_xgate_size_stubs) (elf32_xgate_build_stubs, elf32_xgate_check_relocs) (elf32_xgate_relocate_section, _bfd_xgate_elf_set_private_flags) (elf32_xgate_post_process_headers): Delete. (elf32_xgate_backend_symbol_processing): New function. (xgate_elf_ignore_reloc, xgate_elf_special_reloc) (_bfd_xgate_elf_print_private_bfd_data): Make static. (ELF_TARGET_ID, elf_info_to_howto, elf_backend_check_relocs) (elf_backend_relocate_section, elf_backend_object_p) (elf_backend_final_write_processing, elf_backend_can_gc_sections) (elf_backend_post_process_headers, elf_backend_add_symbol_hook) (bfd_elf32_bfd_link_hash_table_create) (bfd_elf32_bfd_set_private_flags) (xgate_stub_hash_lookup): Don't define. (elf_backend_symbol_processing): Define. * elf-bfd.h (elf_target_id): Delete XGATE_ELF_DATA. ld/ * emulparams/xgateelf.sh (TEMPLATE_NAME) Set to generic. (EXTRA_EM_FILE): Set to genelf.
README for LD
This is the GNU linker. It is distributed with other "binary
utilities" which should be in ../binutils. See ../binutils/README for
more general notes, including where to send bug reports.
There are many features of the linker:
* The linker uses a Binary File Descriptor library (../bfd)
that it uses to read and write object files. This helps
insulate the linker itself from the format of object files.
* The linker supports a number of different object file
formats. It can even handle multiple formats at once:
Read two input formats and write a third.
* The linker can be configured for cross-linking.
* The linker supports a control language.
* There is a user manual (ld.texi), as well as the
beginnings of an internals manual (ldint.texi).
Installation
============
See ../binutils/README.
If you want to make a cross-linker, you may want to specify
a different search path of -lfoo libraries than the default.
You can do this by setting the LIB_PATH variable in ./Makefile
or using the --with-lib-path configure switch.
To build just the linker, make the target all-ld from the top level
directory (one directory above this one).
Porting to a new target
=======================
See the ldint.texi manual.
Reporting bugs etc
===========================
See ../binutils/README.
Known problems
==============
The Solaris linker normally exports all dynamic symbols from an
executable. The GNU linker does not do this by default. This is
because the GNU linker tries to present the same interface for all
similar targets (in this case, all native ELF targets). This does not
matter for normal programs, but it can make a difference for programs
which try to dlopen an executable, such as PERL or Tcl. You can make
the GNU linker export all dynamic symbols with the -E or
--export-dynamic command line option.
HP/UX 9.01 has a shell bug that causes the linker scripts to be
generated incorrectly. The symptom of this appears to be "fatal error
- scanner input buffer overflow" error messages. There are various
workarounds to this:
* Build and install bash, and build with "make SHELL=bash".
* Update to a version of HP/UX with a working shell (e.g., 9.05).
* Replace "(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc)" in
genscripts.sh with "sh ${srcdir}..." (no parens) and make sure the
emulparams script used exports any shell variables it sets.
Copyright (C) 2012-2018 Free Software Foundation, Inc.
Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.