PR 25469
bfd * archures.c: Add GBZ80 and Z80N machine values.
* reloc.c: Add BFD_RELOC_Z80_16_BE.
* coff-z80.c: Add support for new reloc.
* coffcode.h: Add support for new machine values.
* cpu-z80.c: Add support for new machine names.
* elf32-z80.c: Add support for new reloc.
* bfd-in2.h: Regenerate.
* libbfd.h: Regenerate.
binutils* readelf.c (get_machine_flags): Add support for Z80N machine
number.
gas * config/tc-z80.c: Add -gbz80 command line option to generate code
for the GameBoy Z80. Add support for generating DWARF.
* config/tc-z80.h: Add support for DWARF debug information
generation.
* doc/c-z80.texi: Document new command line option.
* testsuite/gas/z80/gbz80_all.d: New file.
* testsuite/gas/z80/gbz80_all.s: New file.
* testsuite/gas/z80/z80.exp: Run the new tests.
* testsuite/gas/z80/z80n_all.d: New file.
* testsuite/gas/z80/z80n_all.s: New file.
* testsuite/gas/z80/z80n_reloc.d: New file.
include * coff/internal.h (R_IMM16BE): Define.
* elf/z80.h (EF_Z80_MACH_Z80N): Define.
(R_Z80_16_BE): New reloc.
ld * emulparams/elf32z80.sh: Use z80 emulation.
* emultempl/z80.em: Make generic to both COFF and ELF Z80 emulations.
* emultempl/z80elf.em: Delete.
* testsuite/ld-elf/pr22450.d: Expect to fail for the Z80.
* testsuite/ld-elf/sec64k.exp: Fix Z80 assembly.
* testsuite/ld-unique/pr21529.s: Avoid register name conflict.
* testsuite/ld-unique/unique.s: Likewise.
* testsuite/ld-unique/unique_empty.s: Likewise.
* testsuite/ld-unique/unique_shared.s: Likewise.
* testsuite/ld-unique/unique.d: Updated expected output.
* testsuite/ld-z80/arch_z80n.d: New file.
* testsuite/ld-z80/comb_arch_z80_z80n.d: New file.
* testsuite/ld-z80/labels.s: Add more labels.
* testsuite/ld-z80/relocs.s: Add more reloc tests.
* testsuite/ld-z80/relocs_f_z80n.d: New file
opcodes * z80-dis.c: Add support for GBZ80 opcodes.
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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.
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