[gcc.git] / gcc / config / arm / symbian.h

/* 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.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

/* 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
Commit	Line	Data
336bd6ac	1	/* Configuration file for Symbian OS on ARM processors.
7adcbafe	2	Copyright (C) 2004-2022 Free Software Foundation, Inc.
336bd6ac MM	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
2f83c7d6	9	by the Free Software Foundation; either version 3, or (at your
336bd6ac MM	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
2f83c7d6 NC	18	along with GCC; see the file COPYING3. If not see
2f83c7d6 NC	19	<http://www.gnu.org/licenses/>. */
336bd6ac	20
336bd6ac MM	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
63c5b495	28	default with -fbuiltin, which may sometimes be useful.
336bd6ac MM	29
	30	Make all symbols hidden by default. Symbian OS expects that all
	31	exported symbols will be explicitly marked with
2ed9e527 MM	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}} "
866cf037	44	#define CC1PLUS_SPEC CC1_SPEC
336bd6ac	45
99b2692a	46	/* Symbian OS does not use crt*.o, unlike the generic unknown-elf
336bd6ac MM	47	configuration. */
336bd6ac MM	48	#undef STARTFILE_SPEC
99b2692a PB	49	#define STARTFILE_SPEC ""
	50
	51	#undef ENDFILE_SPEC
	52	#define ENDFILE_SPEC ""
336bd6ac	53
19dc705e MM	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
63c5b495 MM	59	/* Support the "dllimport" attribute. */
63c5b495 MM	60	#define TARGET_DLLIMPORT_DECL_ATTRIBUTES 1
87c2399d	61
e4dc702c	62	/* The assembler should assume VFP FPU format, and armv5t. */
87c2399d MM	63	#undef SUBTARGET_ASM_FLOAT_SPEC
87c2399d MM	64	#define SUBTARGET_ASM_FLOAT_SPEC \
e4dc702c	65	"%{!mfpu=:-mfpu=vfp} %{!mcpu=:%{!march=*:-march=armv5t}}"
87c2399d	66
f9a02408	67	/* Define the __symbian__ macro. */
40a1c5cb	68	#undef TARGET_OS_CPP_BUILTINS
b54c93b7 JM	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	} \
f9a02408	79	while (false)
1e731102	80
88c6057f MM	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"
1e731102 MM	89
	90	/* SymbianOS cannot merge entities with vague linkage at runtime. */
	91	#define TARGET_ARM_DYNAMIC_VAGUE_LINKAGE_P false
571191af PB	92
571191af PB	93	#define TARGET_DEFAULT_WORD_RELOCATIONS 1
1e874273 PB	94
1e874273 PB	95	#define ARM_TARGET2_DWARF_FORMAT DW_EH_PE_absptr