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/* Configuration file for Symbian OS on ARM processors.

   Copyright (C) 2004, 2005

   Free Software Foundation, Inc.

   Contributed by CodeSourcery, LLC

   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 2, 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 COPYING.  If not, write to

   the Free Software Foundation, 51 Franklin Street, Fifth Floor,

   Boston, MA 02110-1301, USA.  */

/* Do not expand builtin functions (unless explicitly prefixed with

   "__builtin").  Symbian OS code relies on properties of the standard

   library that go beyond those guaranteed by the ANSI/ISO standard.

   For example, "memcpy" works even with overlapping memory, like

   "memmove".  We cannot simply set flag_no_builtin in arm.c because

   (a) flag_no_builtin is not declared in language-independent code,

   and (b) that would prevent users from explicitly overriding the

   default with -fbuiltin, which may sometimes be useful.

   Make all symbols hidden by default.  Symbian OS expects that all

   exported symbols will be explicitly marked with

   "__declspec(dllexport)".

   Enumeration types use 4 bytes, even if the enumerals are small,

   unless explicitly overridden.

   The wchar_t type is a 2-byte type, unless explicitly

   overridden.  */

#define CC1_SPEC                                                \

  "%{!fbuiltin:%{!fno-builtin:-fno-builtin}} "                  \

  "%{!fvisibility=*:-fvisibility=hidden} "                      \

  "%{!fshort-enums:%{!fno-short-enums:-fno-short-enums}} "      \

  "%{!fshort-wchar:%{!fno-short-wchar:-fshort-wchar}} "

#define CC1PLUS_SPEC CC1_SPEC

/* Symbian OS does not use crt*.o, unlike the generic unknown-elf

   configuration.  */

#undef STARTFILE_SPEC

#define STARTFILE_SPEC ""

#undef ENDFILE_SPEC

#define ENDFILE_SPEC ""

/* Do not link with any libraries by default.  On Symbian OS, the user

   must supply all required libraries on the command line.  */

#undef LIB_SPEC

#define LIB_SPEC ""

/* Support the "dllimport" attribute.  */

#define TARGET_DLLIMPORT_DECL_ATTRIBUTES 1

/* Symbian OS assumes ARM V5 or above.  Since -march=armv5 is

   equivalent to making the ARM 10TDMI core the default, we can set

   SUBTARGET_CPU_DEFAULT and get an equivalent effect.  */

#undef SUBTARGET_CPU_DEFAULT

#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm10tdmi

/* The assembler should assume VFP FPU format, and armv5t.  */

#undef SUBTARGET_ASM_FLOAT_SPEC

#define SUBTARGET_ASM_FLOAT_SPEC \

  "%{!mfpu=*:-mfpu=vfp} %{!mcpu=*:%{!march=*:-march=armv5t}}"

/* SymbianOS provides the BPABI routines in a separate library.

   Therefore, we do not need to define any of them in libgcc.  */

#undef RENAME_LIBRARY

#define RENAME_LIBRARY(GCC_NAME, AEABI_NAME) /* empty */

/* Define the __symbian__ macro.  */

#undef TARGET_OS_CPP_BUILTINS

#define TARGET_OS_CPP_BUILTINS()                \

  do                                            \

    {                                           \

      /* Include the default BPABI stuff.  */   \

      TARGET_BPABI_CPP_BUILTINS ();             \

      builtin_define ("__symbian__");           \

    }                                           \

  while (false)

/* On SymbianOS, these sections are not writable, so we use "a",

   rather than "aw", for the section attributes.  */

#undef ARM_EABI_CTORS_SECTION_OP

#define ARM_EABI_CTORS_SECTION_OP \

  "\t.section\t.init_array,\"a\",%init_array"

#undef ARM_EABI_DTORS_SECTION_OP

#define ARM_EABI_DTORS_SECTION_OP \

  "\t.section\t.fini_array,\"a\",%fini_array"

/* SymbianOS cannot merge entities with vague linkage at runtime.  */

#define TARGET_ARM_DYNAMIC_VAGUE_LINKAGE_P false