1/* Configuration file for Symbian OS on ARM processors.
2   Copyright (C) 2004-2020 Free Software Foundation, Inc.
3   Contributed by CodeSourcery, LLC
4
5   This file is part of GCC.
6
7   GCC is free software; you can redistribute it and/or modify it
8   under the terms of the GNU General Public License as published
9   by the Free Software Foundation; either version 3, or (at your
10   option) any later version.
11
12   GCC is distributed in the hope that it will be useful, but WITHOUT
13   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
15   License for more details.
16
17   You should have received a copy of the GNU General Public License
18   along with GCC; see the file COPYING3.  If not see
19   <http://www.gnu.org/licenses/>.  */
20
21/* Do not expand builtin functions (unless explicitly prefixed with
22   "__builtin").  Symbian OS code relies on properties of the standard
23   library that go beyond those guaranteed by the ANSI/ISO standard.
24   For example, "memcpy" works even with overlapping memory, like
25   "memmove".  We cannot simply set flag_no_builtin in arm.c because
26   (a) flag_no_builtin is not declared in language-independent code,
27   and (b) that would prevent users from explicitly overriding the
28   default with -fbuiltin, which may sometimes be useful.
29
30   Make all symbols hidden by default.  Symbian OS expects that all
31   exported symbols will be explicitly marked with
32   "__declspec(dllexport)".
33
34   Enumeration types use 4 bytes, even if the enumerals are small,
35   unless explicitly overridden.
36
37   The wchar_t type is a 2-byte type, unless explicitly
38   overridden.  */
39#define CC1_SPEC						\
40  "%{!fbuiltin:%{!fno-builtin:-fno-builtin}} "			\
41  "%{!fvisibility=*:-fvisibility=hidden} "			\
42  "%{!fshort-enums:%{!fno-short-enums:-fno-short-enums}} "	\
43  "%{!fshort-wchar:%{!fno-short-wchar:-fshort-wchar}} "
44#define CC1PLUS_SPEC CC1_SPEC
45
46/* Symbian OS does not use crt*.o, unlike the generic unknown-elf
47   configuration.  */
48#undef STARTFILE_SPEC
49#define STARTFILE_SPEC ""
50
51#undef ENDFILE_SPEC
52#define ENDFILE_SPEC ""
53
54/* Do not link with any libraries by default.  On Symbian OS, the user
55   must supply all required libraries on the command line.  */
56#undef LIB_SPEC
57#define LIB_SPEC ""
58
59/* Support the "dllimport" attribute.  */
60#define TARGET_DLLIMPORT_DECL_ATTRIBUTES 1
61
62/* The assembler should assume VFP FPU format, and armv5t.  */
63#undef SUBTARGET_ASM_FLOAT_SPEC
64#define SUBTARGET_ASM_FLOAT_SPEC \
65  "%{!mfpu=*:-mfpu=vfp} %{!mcpu=*:%{!march=*:-march=armv5t}}"
66
67/* Define the __symbian__ macro.  */
68#undef TARGET_OS_CPP_BUILTINS
69#define TARGET_OS_CPP_BUILTINS()				\
70  do								\
71    {								\
72      /* Include the default BPABI stuff.  */			\
73      TARGET_BPABI_CPP_BUILTINS ();				\
74      /* Symbian OS does not support merging symbols across DLL	\
75	 boundaries.  */					\
76      builtin_define ("__GXX_MERGED_TYPEINFO_NAMES=0");		\
77      builtin_define ("__symbian__");				\
78    }								\
79  while (false)
80
81/* On SymbianOS, these sections are not writable, so we use "a",
82   rather than "aw", for the section attributes.  */
83#undef ARM_EABI_CTORS_SECTION_OP
84#define ARM_EABI_CTORS_SECTION_OP \
85  "\t.section\t.init_array,\"a\",%init_array"
86#undef ARM_EABI_DTORS_SECTION_OP
87#define ARM_EABI_DTORS_SECTION_OP \
88  "\t.section\t.fini_array,\"a\",%fini_array"
89
90/* SymbianOS cannot merge entities with vague linkage at runtime.  */
91#define TARGET_ARM_DYNAMIC_VAGUE_LINKAGE_P false
92
93#define TARGET_DEFAULT_WORD_RELOCATIONS 1
94
95#define ARM_TARGET2_DWARF_FORMAT DW_EH_PE_absptr
96