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julius |
/* Configuration file for Symbian OS on ARM processors.
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Copyright (C) 2004, 2005, 2007
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Free Software Foundation, Inc.
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Contributed by CodeSourcery, LLC
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 3, or (at your
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option) any later version.
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GCC is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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/* Do not expand builtin functions (unless explicitly prefixed with
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"__builtin"). Symbian OS code relies on properties of the standard
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library that go beyond those guaranteed by the ANSI/ISO standard.
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For example, "memcpy" works even with overlapping memory, like
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"memmove". We cannot simply set flag_no_builtin in arm.c because
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(a) flag_no_builtin is not declared in language-independent code,
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and (b) that would prevent users from explicitly overriding the
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default with -fbuiltin, which may sometimes be useful.
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Make all symbols hidden by default. Symbian OS expects that all
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exported symbols will be explicitly marked with
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"__declspec(dllexport)".
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Enumeration types use 4 bytes, even if the enumerals are small,
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unless explicitly overridden.
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The wchar_t type is a 2-byte type, unless explicitly
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overridden. */
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#define CC1_SPEC \
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"%{!fbuiltin:%{!fno-builtin:-fno-builtin}} " \
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"%{!fvisibility=*:-fvisibility=hidden} " \
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"%{!fshort-enums:%{!fno-short-enums:-fno-short-enums}} " \
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"%{!fshort-wchar:%{!fno-short-wchar:-fshort-wchar}} "
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#define CC1PLUS_SPEC CC1_SPEC
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/* Symbian OS does not use crt*.o, unlike the generic unknown-elf
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configuration. */
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC ""
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC ""
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/* Do not link with any libraries by default. On Symbian OS, the user
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must supply all required libraries on the command line. */
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#undef LIB_SPEC
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#define LIB_SPEC ""
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/* Support the "dllimport" attribute. */
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#define TARGET_DLLIMPORT_DECL_ATTRIBUTES 1
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/* Symbian OS assumes ARM V5 or above. Since -march=armv5 is
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equivalent to making the ARM 10TDMI core the default, we can set
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SUBTARGET_CPU_DEFAULT and get an equivalent effect. */
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#undef SUBTARGET_CPU_DEFAULT
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#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm10tdmi
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/* The assembler should assume VFP FPU format, and armv5t. */
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#undef SUBTARGET_ASM_FLOAT_SPEC
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#define SUBTARGET_ASM_FLOAT_SPEC \
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"%{!mfpu=*:-mfpu=vfp} %{!mcpu=*:%{!march=*:-march=armv5t}}"
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/* SymbianOS provides the BPABI routines in a separate library.
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Therefore, we do not need to define any of them in libgcc. */
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#undef RENAME_LIBRARY
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#define RENAME_LIBRARY(GCC_NAME, AEABI_NAME) /* empty */
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/* Define the __symbian__ macro. */
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#undef TARGET_OS_CPP_BUILTINS
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#define TARGET_OS_CPP_BUILTINS() \
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do \
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{ \
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/* Include the default BPABI stuff. */ \
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TARGET_BPABI_CPP_BUILTINS (); \
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builtin_define ("__symbian__"); \
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} \
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while (false)
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/* On SymbianOS, these sections are not writable, so we use "a",
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rather than "aw", for the section attributes. */
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#undef ARM_EABI_CTORS_SECTION_OP
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#define ARM_EABI_CTORS_SECTION_OP \
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"\t.section\t.init_array,\"a\",%init_array"
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#undef ARM_EABI_DTORS_SECTION_OP
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#define ARM_EABI_DTORS_SECTION_OP \
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"\t.section\t.fini_array,\"a\",%fini_array"
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/* SymbianOS cannot merge entities with vague linkage at runtime. */
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#define TARGET_ARM_DYNAMIC_VAGUE_LINKAGE_P false
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