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Due to my ongoing work to make it possible for gdbserver to start the
inferior using the shell, I had to share the fork_inferior function
under the "nat/" directory. In order to do that, I created a new file
and put the function there; however, this meant that I now had to
update some of the *.mh files (under "gdb/config") and add the new
file as a dependency to be built natively. Bleh...
After talking a bit to Pedro about this, the idea came up to write a
new "gdb/configure.nat" file, a la "gdb/configure.tgt", which would
concentrate all of the native settings for each host/system. I
decided to tackle this issue.
The patch is simple. All of the previous Makefile variables that were
being declared inside the *.mh files are now inside "gdb/Makefile.in",
and "gdb/configure" is responsible for AC_SUBST'ing them. The
definitions of these variables were put inside "gdb/configure.nat", so
now they're shell variables. For excerpts of Makefile code, one must
create a file under "gdb/config/${gdb_cpu_host}" and reference it on
the "nat_extra_makefile_frag" variable.
It should now be easier to update the native dependencies of hosts in
this single file.
This has been tested on x86_64 without regressions.
gdb/ChangeLog:
2017-05-06 Sergio Durigan Junior <sergiodj@redhat.com>
* Makefile.in: Remove "@host_makefile_frag@". Add variables
NAT_FILE, NATDEPFILES, NAT_CDEPS, LOADLIBES, MH_CFLAGS, XM_CLIBS,
NAT_GENERATED_FILES, HAVE_NATIVE_GCORE_HOST. Add
"@nat_extra_makefile_frag@".
(Makefile): Remove dependency on "@frags@".
($(GNULIB_BUILDDIR)/Makefile): Likewise.
(data-directory/Makefile): Likewise.
* config/aarch64/linux.mh: Deleted; moved contents to
"gdb/configure.nat".
* config/alpha/alpha-linux.mh: Likewise.
* config/alpha/nbsd.mh: Likewise.
* config/arm/linux.mh: Likewise.
* config/arm/nbsdelf.mh: Likewise.
* config/i386/cygwin.mh: Likewise.
* config/i386/cygwin64.mh: Likewise.
* config/i386/darwin.mh: Likewise.
* config/i386/fbsd.mh: Likewise.
* config/i386/fbsd64.mh: Likewise.
* config/i386/go32.mh: Likewise.
* config/i386/i386gnu.mh: Likewise.
* config/i386/i386sol2.mh: Likewise.
* config/i386/linux.mh: Likewise.
* config/i386/linux64.mh: Likewise.
* config/i386/mingw.mh: Likewise.
* config/i386/mingw64.mh: Likewise.
* config/i386/nbsd64.mh: Likewise.
* config/i386/nbsdelf.mh: Likewise.
* config/i386/nto.mh: Likewise.
* config/i386/obsd.mh: Likewise.
* config/i386/obsd64.mh: Likewise.
* config/i386/sol2-64.mh: Likewise.
* config/ia64/linux.mh: Likewise.
* config/m32r/linux.mh: Likewise.
* config/m68k/linux.mh: Likewise.
* config/m68k/nbsdelf.mh: Likewise.
* config/m68k/obsd.mh: Likewise.
* config/m88k/obsd.mh: Likewise.
* config/mips/fbsd.mh: Likewise.
* config/mips/linux.mh: Likewise.
* config/mips/nbsd.mh: Likewise.
* config/mips/obsd64.mh: Likewise.
* config/pa/linux.mh: Likewise.
* config/pa/nbsd.mh: Likewise.
* config/pa/obsd.mh: Likewise.
* config/powerpc/aix.mh: Likewise.
* config/powerpc/fbsd.mh: Likewise.
* config/powerpc/linux.mh: Likewise.
* config/powerpc/nbsd.mh: Likewise.
* config/powerpc/obsd.mh: Likewise.
* config/powerpc/ppc64-linux.mh: Likewise.
* config/powerpc/spu-linux.mh: Likewise.
* config/s390/linux.mh: Likewise.
* config/sh/nbsd.mh: Likewise.
* config/sparc/fbsd.mh: Likewise.
* config/sparc/linux.mh: Likewise.
* config/sparc/linux64.mh: Likewise.
* config/sparc/nbsd64.mh: Likewise.
* config/sparc/nbsdelf.mh: Likewise.
* config/sparc/obsd64.mh: Likewise.
* config/sparc/sol2.mh: Likewise.
* config/tilegx/linux.mh: Likewise.
* config/vax/nbsdelf.mh: Likewise.
* config/vax/obsd.mh: Likewise.
* config/xtensa/linux.mh: Likewise.
* config/i386/i386gnu.mn: New file, with excerpts from
"config/i386/i386gnu.mh".
* configure: Regenerate.
* configure.ac: Rewrite code to use "gdb/configure.nat" instead of
*.mh files under "gdb/config".
* configure.nat: New file, with contents from the
"gdb/config/*/*.mh" files.
gdb/doc/ChangeLog:
2017-05-06 Sergio Durigan Junior <sergiodj@redhat.com>
* Makefile: Remove "@host_makefile_frag@".
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... using the target_so_ops framework.
gdb/ChangeLog:
* target.h (TARGET_OBJECT_AIX_LIBRARIES): New target_object enum.
* features/library-list-aix.dtd: New file.
* solib-aix.h, solib-aix.c: New file.
* rs6000-aix-tdep.c: #include "solib.h" and "solib-aix.h".
(rs6000_find_toc_address_hook): Delete.
(rs6000_push_dummy_call): Rewrite code setting the TOC value.
(rs6000_aix_init_osabi): Register solib_aix_so_ops.
* rs6000-nat.c: Remove "xcoffsolib.h" include. Include
"xml-utils.h".
(map_vmap, vmap_exec, vmap_ldinfo, add_vmap, objfile_symbol_add)
(vmap_symtab, fixup_breakpoints): Delete.
(rs6000_xfer_shared_libraries): New function.
(rs6000_xfer_partial): Add TARGET_OBJECT_AIX_LIBRARIES handling.
(vmap_secs, bss_data_overlap, vmap_add_symbols): Delete.
(xcoff_relocate_symtab, xcoff_relocate_core): Delete.
(rs6000_ptrace_ldinfo, rs6000_core_ldinfo)
(rs6000_xfer_shared_library): New function.
(find_toc_address): Delete.
(_initialize_rs6000_nat): Do not set rs6000_find_toc_address_hook.
* rs6000-tdep.h (rs6000_find_toc_address_hook): Remove.
* xcoffread.c (record_minimal_symbol): Reloate symbol address
before creating minimal symbol. Adjust function description
accordingly.
(scan_xcoff_symtab): Replace call to
prim_record_minimal_symbol_and_info by call to
record_minimal_symbol.
(xcoff_symfile_offsets): Reimplement mostly as a wrapper
around default_symfile_offsets.
* configure.tgt: Add solib-aix.o to gdb_target_obs for
powerpc-aix targets.
* config/rs6000/nm-rs6000.h: Delete.
* config/powerpc/aix.mh (NAT_FILE): Delete.
(NATDEPFILES): Remove xcoffsolib.o.
* Makefile.in (XMLFILES): Add library-list-aix.dtd.
(ALL_TARGET_OBS): Add solib-aix.o.
(HFILES_NO_SRCDIR): Remove xcoffsolib.h and
config/rs6000/nm-rs6000.h. Add solib-aix.h.
(ALLDEPFILES): Add solib-aix.c. Remove xcoffsolib.c.
* xcoffsolib.h, xcoffsolib.c: Delete.
* solib.c (reload_shared_libraries): Remove reference to
SOLIB_CREATE_INFERIOR_HOOK.
* breakpoint.c (handle_solib_event): Remove reference to SOLIB_ADD.
(disable_breakpoints_in_shlibs): Remove reference to PC_SOLIB.
(momentary_bkpt_re_set): Replace SOLIB_ADD by solib_add in
comment.
* corelow.c (deprecated_core_resize_section_table): Delete.
* exec.c: Remove include of xcoffsolib.h".
(map_vmap, vmap): Delete.
(exec_close_1): Remove references to vmap.
(exec_file_attach): Remove vmap handling code, and reference
to DEPRECATED_IBM6000_TARGET.
(bfdsec_to_vmap): Delete.
(exec_files_info): Remove block of code handling VMAP.
* infcmd.c (post_create_inferior): Remove reference to
SOLIB_CREATE_INFERIOR_HOOK and SOLIB_ADD.
* infrun.c (follow_exec): Remove reference to
SOLIB_CREATE_INFERIOR_HOOK.
* stack.c (print_frame): Remove reference to PC_SOLIB.
* solib-dsbt.c (dsbt_current_sos): Adjust comment.
(dsbt_relocate_main_executable): Likewise.
* solib-frv.c (frv_current_sos): Likewise.
gdb/doc/ChangeLog:
* gdbint.texinfo (Algorithms): Remove entries documenting
DEPRECATED_IBM6000_TARGET, SOLIB_ADD, and
SOLIB_CREATE_INFERIOR_HOOK.
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Fix duplicate .o files after omitting libbfd.a.
* Makefile.in (ALL_TARGET_OBS): Remove corelow.o.
(SFILES): Add corelow.c.
(COMMON_OBS): Add corelow.o.
(ALLDEPFILES): Remove corelow.c.
* config/alpha/alpha-linux.mh (NATDEPFILES): Remove corelow.o.
* config/alpha/alpha-osf3.mh: Likewise.
* config/alpha/fbsd.mh: Likewise.
* config/arm/nbsdaout.mh: Likewise.
* config/arm/nbsdelf.mh: Likewise.
* config/i386/i386gnu.mh: Likewise.
* config/ia64/hpux.mh: Likewise.
* config/ia64/linux.mh: Likewise.
* config/m32r/linux.mh: Likewise.
* config/m68k/linux.mh: Likewise.
* config/mips/irix5.mh: Likewise.
* config/mips/irix6.mh: Likewise.
* config/pa/hpux.mh: Likewise.
* config/pa/linux.mh: Likewise.
* config/powerpc/aix.mh: Likewise.
* config/sparc/linux.mh: Likewise.
* config/sparc/linux64.mh: Likewise.
* config/sparc/sol2.mh: Likewise.
* config/vax/vax.mh: Likewise.
* configure.tgt (alpha*-*-freebsd* alpha*-*-kfreebsd*-gnu)
(alpha*-*-netbsd*, alpha*-*-knetbsd*-gnu, alpha*-*-openbsd*)
(am33_2.0*-*-linux*, arm*-wince-pe, arm*-*-mingw32ce*, arm*-*-linux*)
(arm*-*-openbsd*, cris*, frv-*-*, hppa*-*-hpux*, hppa*-*-netbsd*)
(hppa*-*-openbsd*, i[34567]86-*-dicos*, i[34567]86-*-freebsd*)
(i[34567]86-*-kfreebsd*-gnu, i[34567]86-*-netbsd*)
(i[34567]86-*-knetbsd*-gnu, i[34567]86-*-openbsd*, i[34567]86-*-nto*)
(i[34567]86-*-solaris2.1[0-9]*, x86_64-*-solaris2.1[0-9]*)
(i[34567]86-*-solaris*, i[34567]86-*-linux*, i[34567]86-*-cygwin*)
(i[34567]86-*-mingw32*, m68*-*-netbsd*, m68*-*-knetbsd*-gnu)
(m68*-*-openbsd*, m88*-*-openbsd*, microblaze*-linux-*)
(microblaze*-*-linux*, mips*-*-linux*, mips*-*-netbsd*)
(mips*-*-knetbsd*-gnu, mips64*-*-openbsd*, powerpc-*-netbsd*)
(powerpc-*-knetbsd*-gnu, powerpc-*-openbsd*, powerpc-*-linux*)
(powerpc64-*-linux*, s390*-*-*, score-*-*, sh*-*-linux*)
(sh*-*-netbsdelf*, sh*-*-knetbsd*-gnu, sh*-*-openbsd*)
(sparc*-*-freebsd*, sparc*-*-kfreebsd*-gnu, sparc-*-netbsd*)
(sparc-*-knetbsd*-gnu, sparc64-*-netbsd*, sparc64-*-knetbsd*-gnu)
(sparc-*-openbsd*, sparc64-*-openbsd*, tic6x-*-*linux, vax-*-netbsd*)
(vax-*-knetbsd*-gnu, vax-*-openbsd*, x86_64-*-dicos*, x86_64-*-linux*)
(x86_64-*-freebsd*, x86_64-*-kfreebsd*-gnu, x86_64-*-netbsd*)
(x86_64-*-knetbsd*-gnu, x86_64-*-openbsd*, xtensa*-*-linux*): Remove
corelow.o from gdb_target_obs.
* corefile.c (core_target): Update the comment on NULL value.
(core_file_command): Replace error by gdb_assert on CORE_TARGET.
* corelow.c (sniff_core_bfd): Call error instead of warning on zero
MATCHES. Drop YUMMY set on NULL.
(core_close): Do not call exit_inferior_silent on zero PID. Do not
reclaim CORE_DATA if it is already NULL.
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Partially fix duplicate .o files after omitting libbfd.a.
* config/alpha/alpha-osf3.mh (NATDEPFILES): Remove solib.o.
* config/i386/nbsdaout.mh (NATDEPFILES): Remove solib.o.
* config/i386/obsdaout.mh (NATDEPFILES): Remove solib.o.
* config/m68k/nbsdaout.mh (NATDEPFILES): Remove solib.o.
* config/m68k/obsd.mh (NATDEPFILES): Remove solib.o.
* config/powerpc/aix.mh (NATDEPFILES): Remove xcoffread.o.
* config/vax/nbsdaout.mh (NATDEPFILES): Remove solib.o.
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(aix_thread_xfer_partial): ... this.
(init_aix_thread_ops): Install to_xfer_partial instead
of deprecated_xfer_memory target method.
* config/powerpc/aix.mh (NATDEPFILES): Remove infptrace.o
and inftarg.o, add inf-ptrace.o.
* config/rs6000/nm-rs6000.h (FETCH_INFERIOR_REGISTERS,
CHILD_XFER_MEMORY, KERNEL_U_SIZE, kernel_u_size): Remove.
* rs6000-nat.c: Include "inf-ptrace.h" and "gdb_stdint.h".
(fetch_inferior_registers): Rename to ...
(rs6000_fetch_inferior_registers): ... this. Make static.
(store_inferior_registers): Rename to ...
(rs6000_store_inferior_registers): ... this. Make static.
(read_word, child_xfer_memory): Remove.
(rs6000_xfer_partial): New function.
(kernel_u_size): Remove.
(_initialize_core_rs6000): Add inf_ptrace-based target.
* Makefile.in (rs6000-nat.o): Update dependencies.
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* configure.tgt (rs6000-*-*): Likewise.
* config/rs6000/aix4.mh: Delete file.
* config/rs6000/aix4.mt: Delete file.
* config/rs6000/rs6000.mh: Delete file.
* config/rs6000/rs6000.mt: Delete file.
* config/powerpc/nm-aix.h: Delete file.
* config/powerpc/aix.mh (NAT_FILE): Set to config/rs6000/nm-rs6000.h.
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* config/powerpc/aix.mh (MH_FILE): Remove.
* config/powerpc/aix432.mh (MH_FILE): Remove.
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* config/powerpc/aix432.mh: Likewise.
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* config/powerpc/aix.mh (MH_LDFLAGS): Don't set these, the Gnu linker
doesn't understand them.
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SOLIB_SYMBOLS_MANUAL code, cleanup of AIX shared library handling code.
* rs6000-nat.c (vmap_symtab): Do not try to modify offsets
if symbols are not yet loaded.
(vmap_add_symbols): New function to add symbols for a vmap entry.
(add_vmap): Turn errors into warnings, return NULL vmap upon
failure. Add symbols via vmap_add_symbols only if requested.
(xcoff_relocate_core): Allow debugging of core files without an
executable file. Handle NULL returns from add_vmap gracefully.
* xcoffsolib.c (solib_add): Remove, no longer needed.
(solib_info): Do not check for new shared libraries if there is no
inferior process.
(sharedlibrary_command): Made static.
Do not check for new shared libraries if there is no inferior process.
Add symbols for requested shared libraries via vmap_add_symbols.
(_initialize_solib): Add `set auto-solib-add' command.
* xcoffsolib.h (vmap_add_symbols): Add prototype declaration.
* config/rs6000/tm-rs6000.h (PC_LOAD_SEGMENT): Move from here ...
* config/rs6000/nm-rs6000.h: ... to here, this is an AIX native
feature.
* config/powerpc/tm-macos.h, config/powerpc/tm-ppc-eabi.h,
config/powerpc/tm-ppc-nw.h, config/rs6000/tm-rs6000ly.h:
Remove #undef PC_LOAD_SEGMENT.
* config/powerpc/aix.mt, config/rs6000/aix4.mt, config/rs6000/rs6000.mt
(TDEPFILES): Move xcoffsolib.o from here ...
* config/powerpc/aix.mh, config/rs6000/aix4.mh, config/rs6000/rs6000.mh
(NATDEPFILES): ... to here, xcoffsolib.o contains AIX native code
only.
* rs6000-tdep.c: Remove #include xcoffsolib.h, no longer needed.
* xcoffsolib.h (xcoff_relocate_symtab_hook): Remove declaration.
* rs6000-nat.c (_initialize_core_rs6000): Remove setting of
xcoff_relocate_symtab_hook, no longer needed.
* xcoffsolib.c (solib_info, sharedlibrary_command): Remove
xcoff_relocate_symtab_hook indirection, call xcoff_relocate_symtab
directly, as xcoffsolib.c is now compiled in native AIX configurations
only.
* Makefile.in: Update dependencies for rs6000-tdep.o, rs6000-nat.o
and xcoffsolib.o.
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support. Incorporate most of tm-rs6000.h.
(find_toc_address_hook): Rename to rs6000_find_toc_address_hook.
(rs6000_set_host_arch_hook): Declare.
(read_memory_addr): Define.
(pop_frame): Rename to rs6000_pop_frame.
(rs6000_pop_frame, rs6000_fix_call_dummy, rs6000_push_arguments,
rs6000_frame_saved_pc, rs6000_frame_chain): Remove non-generic
dummy frame handling.
(branch_dest, rs6000_pop_frame, rs6000_skip_trampoline_code,
rs6000_frame_saved_pc, frame_get_saved_regs,
frame_initial_stack_address, rs6000_frame_chain,
rs6000_convert_from_func_ptr_addr): Call read_memory_addr instead
of read_memory_integer.
(branch_dest, rs6000_pop_frame, rs6000_push_arguments,
rs6000_skip_trampoline_code, rs6000_frame_saved_pc,
frame_get_saved_regs, frame_initial_stack_address,
rs6000_frame_chain): Replace 4 with TDEP->wordsize.
(skip_prologue): Recognize some 64-bit stack adjustments.
(push_dummy_frame, pop_dummy_frame, set_processor,
show_processor): Delete.
(frame_get_saved_regs): Manipulate saved register addresses using
CORE_ADDR instead of int.
(rs6000_create_inferior): New function.
(register_names_*[]): Change to struct reg registers_*[].
(variants[]): Assimilate into multi-arch approach.
(register_names_*[], variants[]): Refer to pre-PowerPC
architectures as POWER instead of RS6000.
* rs6000-nat.c: Ubiquitous changes for 64-bit support.
(vmap_secs, xcoff_relocate_symtab): Cast addresses
to unsigned long to avoid sign-extension errors.
(set_host_arch): New function.
(xcoff_relocate_symtab): Try disabling usleep(36000) workaround.
(rs6000_core_fns): Use new bfd_target_xcoff_flavour.
(_initialize_core_rs6000): Initialize rs6000_set_host_arch_hook.
* symfile.c (find_sym_fns): Remove special xcoff kludge.
* xcoffread.c (secnum_to_bfd_section): Initialize args.objfile.
(process_linenos): Query line struct size from coff
backend instead of using compile-time constant.
(enter_line_range): Likewise.
(read_xcoff_symtab): Pass "XCOFF64" instead of "XCOFF" to
record_debugformat() if appropriate.
(process_xcoff_symbol): Access symbol addresses using
SYMBOL_VALUE_ADDRESS instead of SYMBOL_VALUE.
(read_symbol_lineno): Retrieve XCOFF64 symbol names from strtbl.
(scan_xcoff_symtab): Likewise. Query syment struct size from
coff backend instead of using compile-time constant.
(xcoff_sym_fns): Set flavour to bfd_target_xcoff_flavour.
* Makefile.in (INTERNAL_LDFLAGS): Add $(MH_LDFLAGS) to list of flags
that this Makefile variable get set to. (From Kevin Buettner.)
* config/powerpc/aix.mh (MH_LDFLAGS): Add linker flags so that
the TOC doesn't overflow. (From Kevin Buettner.)
* config/powerpc/tm-ppc-aix.h: Move config decisions to
multi-arched rs6000-tdep.c.
* config/rs6000/tm-rs6000.h: Likewise.
(GDB_MULTI_ARCH): Define.
(skip_trampoline_code): Rename to rs6000_skip_trampoline_code.
(is_magic_function_pointer): Replace with
rs6000_convert_from_func_ptr_addr.
(TARGET_CREATE_INFERIOR_HOOK): Define.
(find_toc_address_hook): Rename to rs6000_find_toc_address_hook.
(rs6000_set_host_arch_hook): Declare.
* config/rs6000/nm-rs6000.h (CHILD_XFER_MEMORY): Define.
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