gcc/config/sparc/freebsd.h

/* Definitions for Sun SPARC64 running FreeBSD using the ELF format
   Copyright (C) 2001-2021 Free Software Foundation, Inc.
   Contributed by David E. O'Brien <obrien@FreeBSD.org> and BSDi.

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/>.  */

#undef  SUBTARGET_EXTRA_SPECS
#define SUBTARGET_EXTRA_SPECS \
  { "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER }

/* FreeBSD needs the platform name (sparc64) defined.
   Emacs etc needs to know if the arch is 64 or 32-bits.
   This also selects which targets are available via -mcpu.  */

#undef  FBSD_TARGET_CPU_CPP_BUILTINS
#define FBSD_TARGET_CPU_CPP_BUILTINS()		\
  do						\
    {						\
      builtin_define ("__sparc64__");		\
      builtin_define ("__sparc__");		\
      builtin_define ("__sparc_v9__");		\
      builtin_define ("__sparcv9");		\
    }						\
  while (0)

#undef ASM_SPEC
#define ASM_SPEC "%{" FPIE_OR_FPIC_SPEC ":-K PIC} %(asm_cpu)"

#define LINK_SPEC "%(link_arch)						\
  %{!mno-relax:%{!r:-relax}}						\
  %{p:%nconsider using '-pg' instead of '-p' with gprof(1)}		\
  %{assert*} %{R*} %{rpath*} %{defsym*}					\
  %{shared:-Bshareable %{h*} %{soname*}}				\
  %{symbolic:-Bsymbolic}						\
  %{!shared:								\
    %{!static:								\
      %{rdynamic:-export-dynamic}					\
      -dynamic-linker %(fbsd_dynamic_linker) }	\
    %{static:-Bstatic}}"


/************************[  Target stuff  ]***********************************/

/* Define the actual types of some ANSI-mandated types.  
   Needs to agree with <machine/ansi.h>.  GCC defaults come from c-decl.c,
   c-common.c, and config/<arch>/<arch>.h.  */

/* Earlier headers may get this wrong for FreeBSD.
   We use the GCC defaults instead.  */
#undef WCHAR_TYPE

#undef  WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE 32

/* Define for support of TFmode long double.
   SPARC ABI says that long double is 4 words.  */
#undef  LONG_DOUBLE_TYPE_SIZE
#define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64)

/* Definitions for 64-bit SPARC running systems with ELF. */

#define TARGET_ELF		1

/* XXX */
/* A 64 bit v9 compiler with stack-bias,
   in a Medium/mid code model environment.  */

#undef  TARGET_DEFAULT
#define TARGET_DEFAULT \
  (MASK_V9 + MASK_64BIT + MASK_PTR64 /* + MASK_FASTER_STRUCTS */ \
   + MASK_STACK_BIAS + MASK_APP_REGS + MASK_FPU \
   + MASK_LONG_DOUBLE_128 /* + MASK_HARD_QUAD */)

/* The default code model.  */
#undef  SPARC_DEFAULT_CMODEL
#define SPARC_DEFAULT_CMODEL	CM_MEDLOW

#define HAVE_ENABLE_EXECUTE_STACK

/************************[  Assembler stuff  ]********************************/

#undef	LOCAL_LABEL_PREFIX
#define LOCAL_LABEL_PREFIX  "."

/* XXX2 */
/* This is how to store into the string LABEL
   the symbol_ref name of an internal numbered label where
   PREFIX is the class of label and NUM is the number within the class.
   This is suitable for output with `assemble_name'.  */

#undef  ASM_GENERATE_INTERNAL_LABEL
#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)			\
  sprintf (LABEL, "*.L%s%lu", PREFIX, (unsigned long)(NUM))


/************************[  Debugger stuff  ]*********************************/

/* This is the char to use for continuation (in case we need to turn
   continuation back on).  */

#undef  DBX_CONTIN_CHAR
#define DBX_CONTIN_CHAR	'?'

/* DWARF bits.  */

/* Follow Irix 6 and not the Dwarf2 draft in using 64-bit offsets. 
   Obviously the Dwarf2 folks havn't tried to actually build systems
   with their spec.  On a 64-bit system, only 64-bit relocs become
   RELATIVE relocations.  */

/* #define DWARF_OFFSET_SIZE PTR_SIZE */

#ifdef HAVE_AS_TLS
#undef TARGET_SUN_TLS
#undef TARGET_GNU_TLS
#define TARGET_SUN_TLS 0
#define TARGET_GNU_TLS 1
#endif

#undef ENDFILE_SPEC
#define ENDFILE_SPEC						\
  "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} "	\
  FBSD_ENDFILE_SPEC

/* We use GNU ld so undefine this so that attribute((init_priority)) works.  */
#undef CTORS_SECTION_ASM_OP
#undef DTORS_SECTION_ASM_OP