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/* Configuration file for Symbian OS on ARM processors.
Copyright (C) 2004-2022 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 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/>. */
/* 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.cc 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
/* 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}}"
/* Define the __symbian__ macro. */
#undef TARGET_OS_CPP_BUILTINS
#define TARGET_OS_CPP_BUILTINS() \
do \
{ \
/* Include the default BPABI stuff. */ \
TARGET_BPABI_CPP_BUILTINS (); \
/* Symbian OS does not support merging symbols across DLL \
boundaries. */ \
builtin_define ("__GXX_MERGED_TYPEINFO_NAMES=0"); \
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
#define TARGET_DEFAULT_WORD_RELOCATIONS 1
#define ARM_TARGET2_DWARF_FORMAT DW_EH_PE_absptr
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