/* Definitions of target machine for GNU compiler, for HPs running
   HPUX using the 64bit runtime model.
   Copyright (C) 1999-2017 Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.

GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.  */

/* We can debug dynamically linked executables on hpux11; we also
   want dereferencing of a NULL pointer to cause a SEGV.  Do not move
   the "+Accept TypeMismatch" switch.  We check for it in collect2
   to determine which init/fini is needed.  */
#undef LINK_SPEC
#if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GNU_LD)
#define LINK_SPEC \
  "%{!shared:%{p:-L/lib/pa20_64/libp -L/usr/lib/pa20_64/libp %{!static:\
     %nwarning: consider linking with '-static' as system libraries with\n\
     %n  profiling support are only provided in archive format}}}\
   %{!shared:%{pg:-L/lib/pa20_64/libp -L/usr/lib/pa20_64/libp %{!static:\
     %nwarning: consider linking with '-static' as system libraries with\n\
     %n  profiling support are only provided in archive format}}}\
   %{!shared:%{!static:%{rdynamic:-E}}}\
   %{mhp-ld:+Accept TypeMismatch -z} %{mlinker-opt:-O}\
   %{!shared:-u main %{!nostdlib:%{!nodefaultlibs:-u __cxa_finalize}}}\
   %{static:-a archive} %{shared:%{mhp-ld:-b}%{!mhp-ld:-shared}}"
#else
#define LINK_SPEC \
  "%{!shared:%{p:-L/lib/pa20_64/libp -L/usr/lib/pa20_64/libp %{!static:\
     %nwarning: consider linking with '-static' as system libraries with\n\
     %n  profiling support are only provided in archive format}}}\
   %{!shared:%{pg:-L/lib/pa20_64/libp -L/usr/lib/pa20_64/libp %{!static:\
     %nwarning: consider linking with '-static' as system libraries with\n\
     %n  profiling support are only provided in archive format}}}\
   %{!shared:%{!static:%{rdynamic:-E}}}\
   %{!mgnu-ld:+Accept TypeMismatch -z} %{mlinker-opt:-O}\
   %{!shared:-u main %{!nostdlib:%{!nodefaultlibs:-u __cxa_finalize}}}\
   %{static:-a archive} %{shared:%{mgnu-ld:-shared}%{!mgnu-ld:-b}}"
#endif

/* Profiling support is only provided in libc.a.  However, libprof and
   libgprof are only available in shared form on HP-UX 11.00.  We use
   the shared form if we are using the GNU linker or an archive form
   isn't available.  We also usually need to link with libdld and it's
   only available in shared form.  */
#undef LIB_SPEC
#if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GNU_LD)
#define LIB_SPEC \
  "%{!shared:\
     %{!p:%{!pg:%{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\
                  %{static:-a shared} -lrt %{static:-a archive}}\
	    %{mt|pthread:-lpthread} -lc\
	    %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
		%{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
     %{p:%{!pg:%{static:%{!mhp-ld:-a shared}%{mhp-ld:-a archive_shared}}\
	   -lprof %{static:-a archive}\
	   %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\
             %{static:-a shared} -lrt %{static:-a archive}}\
	   %{mt|pthread:-lpthread} -lc\
	   %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
		%{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
     %{pg:%{static:%{!mhp-ld:-a shared}%{mhp-ld:-a archive_shared}}\
       -lgprof %{static:-a archive}\
       %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\
         %{static:-a shared} -lrt %{static:-a archive}}\
       %{mt|pthread:-lpthread} -lc\
       %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
		%{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
   %{shared:%{mt|pthread:-lpthread}}"
#else
#define LIB_SPEC \
  "%{!shared:\
     %{!p:%{!pg:%{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\
                  %{static:-a shared} -lrt %{static:-a archive}}\
	    %{mt|pthread:-lpthread} -lc\
	    %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
		%{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
     %{p:%{!pg:%{static:%{mgnu-ld:-a shared}%{!mgnu-ld:-a archive_shared}}\
	   -lprof %{static:-a archive}\
	   %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\
             %{static:-a shared} -lrt %{static:-a archive}}\
	   %{mt|pthread:-lpthread} -lc\
	   %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
		%{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
     %{pg:%{static:%{mgnu-ld:-a shared}%{!mgnu-ld:-a archive_shared}}\
       -lgprof %{static:-a archive}\
       %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\
         %{static:-a shared} -lrt %{static:-a archive}}\
       %{mt|pthread:-lpthread} -lc\
       %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
		%{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
   %{shared:%{mt|pthread:-lpthread}}"
#endif

/* The libgcc_stub.a and milli.a libraries need to come last.  */
#undef LINK_GCC_C_SEQUENCE_SPEC
#define LINK_GCC_C_SEQUENCE_SPEC "\
  %G %L %G %{!nostdlib:%{!nodefaultlibs:%{!shared:-lgcc_stub}\
  milli.a%s}}"

/* Under hpux11, the normal location of the `ld' and `as' programs is the
   /usr/ccs/bin directory.  */

#ifndef CROSS_DIRECTORY_STRUCTURE
#undef MD_EXEC_PREFIX
#define MD_EXEC_PREFIX "/usr/ccs/bin"
#endif

/* Default prefixes.  */

#undef STANDARD_STARTFILE_PREFIX_1
#define STANDARD_STARTFILE_PREFIX_1 "/lib/pa20_64/"

#undef STANDARD_STARTFILE_PREFIX_2
#define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/pa20_64/"

/* Under hpux11 the normal location of the various pa20_64 *crt*.o files
   is the /usr/ccs/lib/pa20_64 directory.  Some files may also be in the
   /opt/langtools/lib/pa20_64 directory.  */

#ifndef CROSS_DIRECTORY_STRUCTURE
#undef MD_STARTFILE_PREFIX
#define MD_STARTFILE_PREFIX "/usr/ccs/lib/pa20_64/"
#endif

#ifndef CROSS_DIRECTORY_STRUCTURE
#undef MD_STARTFILE_PREFIX_1
#define MD_STARTFILE_PREFIX_1 "/opt/langtools/lib/pa20_64/"
#endif

/* This macro specifies the biggest alignment supported by the object
   file format of this machine.

   The .align directive in the HP assembler allows alignments up to
   4096 bytes.  However, the maximum alignment of a global common symbol
   is 16 bytes using HP ld.  Unfortunately, this macro doesn't provide
   a method to check for common symbols.  */
#undef MAX_OFILE_ALIGNMENT
#define MAX_OFILE_ALIGNMENT 32768

/* Due to limitations in the target structure, it isn't currently possible
   to dynamically switch between the GNU and HP assemblers.  */
#undef TARGET_GAS

/* Configure selects the standard ELFOS defines for use with GAS.  */
#ifdef USING_ELFOS_H

/* We are using GAS.  */
#define TARGET_GAS 1

#undef TARGET_ASM_FILE_START
#define TARGET_ASM_FILE_START pa_hpux64_gas_file_start

/* This is how we output a null terminated string.  */
#undef STRING_ASM_OP
#define STRING_ASM_OP	"\t.stringz\t"

#define TEXT_SECTION_ASM_OP	"\t.text"
#define DATA_SECTION_ASM_OP	"\t.data"
#define BSS_SECTION_ASM_OP	"\t.section\t.bss"

#define HP_INIT_ARRAY_SECTION_ASM_OP	"\t.section\t.init"
#define GNU_INIT_ARRAY_SECTION_ASM_OP	"\t.section\t.init_array"
#define HP_FINI_ARRAY_SECTION_ASM_OP	"\t.section\t.fini"
#define GNU_FINI_ARRAY_SECTION_ASM_OP	"\t.section\t.fini_array"

/* We need to override the following two macros defined in elfos.h since
   the .comm directive has a different syntax and it can't be used for
   local common symbols.  */
#undef ASM_OUTPUT_ALIGNED_COMMON
#define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN)		\
  pa_asm_output_aligned_common (FILE, NAME, SIZE, ALIGN)

#undef ASM_OUTPUT_ALIGNED_LOCAL
#define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN)		\
  pa_asm_output_aligned_local (FILE, NAME, SIZE, ALIGN)

/* The define in pa.h doesn't work with the alias attribute.  The
   default is ok with the following define for GLOBAL_ASM_OP.  */
#undef TARGET_ASM_GLOBALIZE_LABEL

/* This is how we globalize a label.  */
#define GLOBAL_ASM_OP	"\t.globl\t"

/* Hacked version from defaults.h that uses assemble_name_raw
   instead of assemble_name.  A symbol in a type directive that
   isn't otherwise referenced doesn't cause the symbol to be
   placed in the symbol table of the assembled object.  */
#undef ASM_OUTPUT_TYPE_DIRECTIVE
#define ASM_OUTPUT_TYPE_DIRECTIVE(STREAM, NAME, TYPE)		\
do {								\
  fputs (TYPE_ASM_OP, STREAM);					\
  assemble_name_raw (STREAM, NAME);				\
  fputs (", ", STREAM);						\
  fprintf (STREAM, TYPE_OPERAND_FMT, TYPE);			\
  putc ('\n', STREAM);						\
} while (0)

/* Hacked version from elfos.h that doesn't output a label.  */
#undef ASM_DECLARE_FUNCTION_NAME
#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)		\
do {								\
  ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function");		\
  ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL));		\
} while (0)

/* The type of external references must be set correctly for the
   dynamic loader to work correctly.  This is equivalent to the
   HP assembler's .IMPORT directive but relates more directly to
   ELF object file types.  */
#undef ASM_OUTPUT_EXTERNAL
#define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME)			\
  pa_hpux_asm_output_external ((FILE), (DECL), (NAME))
#define ASM_OUTPUT_EXTERNAL_REAL(FILE, DECL, NAME)		\
do {								\
  if (FUNCTION_NAME_P (NAME))					\
    ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function");		\
  else								\
    ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");		\
  default_elf_asm_output_external (FILE, DECL, NAME);		\
} while (0)

/* We need set the type for external libcalls.  Also note that not all
   libcall names are passed to targetm.encode_section_info (e.g., __main).
   Thus, we also have to do the section encoding if it hasn't been done
   already.  */
#undef ASM_OUTPUT_EXTERNAL_LIBCALL
#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN)			\
do {								\
  if (!FUNCTION_NAME_P (XSTR (FUN, 0)))				\
    pa_encode_label (FUN);					\
  ASM_OUTPUT_TYPE_DIRECTIVE (FILE, XSTR (FUN, 0), "function");	\
} while (0)

/* We need to use the HP style for internal labels.  */
#undef ASM_GENERATE_INTERNAL_LABEL
#define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM)	\
  sprintf (LABEL, "*%c$%s%04ld", (PREFIX)[0], (PREFIX) + 1, (long)(NUM))

#else /* USING_ELFOS_H */

/* We are not using GAS.  */
#define TARGET_GAS 0

/* HPUX 11 has the "new" HP assembler.  It's still lousy, but it's a whole
   lot better than the assembler shipped with older versions of hpux.
   However, it doesn't support weak symbols and is a bad fit with ELF.  */
#undef NEW_HP_ASSEMBLER
#define NEW_HP_ASSEMBLER 1

/* It looks like DWARF2 will be the easiest debug format to handle on this
   platform.  */
#define DWARF2_DEBUGGING_INFO 1
#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG

/* This target uses the ELF object file format.  */
#define OBJECT_FORMAT_ELF

#undef TARGET_ASM_FILE_START
#define TARGET_ASM_FILE_START pa_hpux64_hpas_file_start

#undef TEXT_SECTION_ASM_OP
#define TEXT_SECTION_ASM_OP		"\t.SUBSPA $CODE$\n"
#undef READONLY_DATA_SECTION_ASM_OP
#define READONLY_DATA_SECTION_ASM_OP	"\t.SUBSPA $LIT$\n"
#undef DATA_SECTION_ASM_OP
#define DATA_SECTION_ASM_OP		"\t.SUBSPA $DATA$\n"
#undef BSS_SECTION_ASM_OP
#define BSS_SECTION_ASM_OP		"\t.SUBSPA $BSS$\n"

/* We provide explicit defines for CTORS_SECTION_ASM_OP and
   DTORS_SECTION_ASM_OP since we don't yet have support for
   named sections with the HP assembler.  */
#undef CTORS_SECTION_ASM_OP
#define CTORS_SECTION_ASM_OP "\t.SUBSPA \\.ctors,QUAD=1,ALIGN=8,ACCESS=31"
#undef DTORS_SECTION_ASM_OP
#define DTORS_SECTION_ASM_OP "\t.SUBSPA \\.dtors,QUAD=1,ALIGN=8,ACCESS=31"

#define HP_INIT_ARRAY_SECTION_ASM_OP \
  "\t.SUBSPA \\.init,QUAD=1,ALIGN=8,ACCESS=31"
#define GNU_INIT_ARRAY_SECTION_ASM_OP \
  "\t.SUBSPA \\.init_array,QUAD=1,ALIGN=8,ACCESS=31"
#define HP_FINI_ARRAY_SECTION_ASM_OP \
  "\t.SUBSPA \\.fini,QUAD=1,ALIGN=8,ACCESS=31"
#define GNU_FINI_ARRAY_SECTION_ASM_OP \
  "\t.SUBSPA \\.fini_array,QUAD=1,ALIGN=8,ACCESS=31"

#endif /* USING_ELFOS_H */

/* The following defines, used to run constructors and destructors with
   the SOM linker under HP-UX 11, are not needed.  */
#undef HAS_INIT_SECTION
#undef LD_INIT_SWITCH
#undef LD_FINI_SWITCH

/* The following STARTFILE_SPEC and ENDFILE_SPEC defines provide the
   magic needed to run initializers and finalizers.  */
#undef STARTFILE_SPEC
#if TARGET_HPUX_11_31
#define STARTFILE_SPEC \
  "%{!shared: %{!symbolic: crt0%O%s} \
     %{munix=95:unix95.o%s} %{munix=98:unix98.o%s} \
     %{!munix=93:%{!munix=95:%{!munix=98:unix2003%O%s}}}} \
     %{static:crtbeginT%O%s} \
   %{!static:%{!shared:crtbegin%O%s} %{shared:crtbeginS%O%s}}"
#elif TARGET_HPUX_11_11
#define STARTFILE_SPEC \
  "%{!shared: %{!symbolic: crt0%O%s} %{munix=95:unix95.o%s} \
     %{!munix=93:%{!munix=95:unix98%O%s}}} %{static:crtbeginT%O%s} \
   %{!static:%{!shared:crtbegin%O%s} %{shared:crtbeginS%O%s}}"
#else
#define STARTFILE_SPEC \
  "%{!shared: %{!symbolic: crt0%O%s} %{munix=95:unix95%O%s}} \
   %{static:crtbeginT%O%s} %{!static:%{!shared:crtbegin%O%s} \
   %{shared:crtbeginS%O%s}}"
#endif
#undef ENDFILE_SPEC
#define ENDFILE_SPEC "%{!shared:crtend%O%s} %{shared:crtendS%O%s}"

/* Since HP uses the .init and .fini sections for array initializers
   and finalizers, we need different defines for INIT_SECTION_ASM_OP
   and FINI_SECTION_ASM_OP.  With the implementation adopted below,
   the sections are not actually used.  However, we still must provide
   defines to select the proper code path.  */
#undef INIT_SECTION_ASM_OP
#define INIT_SECTION_ASM_OP ""
#undef FINI_SECTION_ASM_OP
#define FINI_SECTION_ASM_OP ""

/* We are using array initializers and don't want calls in the INIT
   and FINI sections.  */
#undef CRT_CALL_STATIC_FUNCTION
#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC)

/* The init_priority attribute is not supported with HP ld.  This could be
   supported if collect2 was used with LD_INIT_SWITCH.  Unfortunately, this
   approach doesn't work with GNU ld since HP-UX doesn't support DT_INIT,
   and therefore the -init and -fini GNU ld switches.  */
#undef SUPPORTS_INIT_PRIORITY
#define SUPPORTS_INIT_PRIORITY (TARGET_GNU_LD ? 1 : 0)

/* If using HP ld do not call pxdb.  Use size as a program that does nothing
   and returns 0.  /bin/true cannot be used because it is a script without
   an interpreter.  */
#define INIT_ENVIRONMENT "LD_PXDB=/usr/ccs/bin/size"

/* The HPUX dynamic linker objects to undefined weak symbols, so do
   not use them in gthr-posix.h.  */
#define GTHREAD_USE_WEAK 0

/* Support attribute weak.  However, the GNU linker only resolves weak
   references if they appear in a shared library.  Thus, it is impossible
   to create a static executable containing weak symbols.  This is a problem
   for the various crt files in libgcc.  We don't want undefined weak
   references to __register_frame_info, __deregister_frame_info and
   __cxa_finalize introduced by crtbegin.o.  So, we provide an archive
   library of empty stub functions to resolve these symbols.  */
#define TARGET_ATTRIBUTE_WEAK
