| /* Definitions of target machine for GNU compiler. |
| For ARM with ELF obj format. |
| Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2004, 2005 |
| Free Software Foundation, Inc. |
| Contributed by Philip Blundell <philb@gnu.org> and |
| Catherine Moore <clm@cygnus.com> |
| |
| 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. */ |
| |
| #ifndef OBJECT_FORMAT_ELF |
| #error elf.h included before elfos.h |
| #endif |
| |
| #ifndef LOCAL_LABEL_PREFIX |
| #define LOCAL_LABEL_PREFIX "." |
| #endif |
| |
| #ifndef SUBTARGET_CPP_SPEC |
| #define SUBTARGET_CPP_SPEC "-D__ELF__" |
| #endif |
| |
| #ifndef SUBTARGET_EXTRA_SPECS |
| #define SUBTARGET_EXTRA_SPECS \ |
| { "subtarget_extra_asm_spec", SUBTARGET_EXTRA_ASM_SPEC }, \ |
| { "subtarget_asm_float_spec", SUBTARGET_ASM_FLOAT_SPEC }, |
| #endif |
| |
| #ifndef SUBTARGET_EXTRA_ASM_SPEC |
| #define SUBTARGET_EXTRA_ASM_SPEC "" |
| #endif |
| |
| #ifndef SUBTARGET_ASM_FLOAT_SPEC |
| #define SUBTARGET_ASM_FLOAT_SPEC "\ |
| %{mapcs-float:-mfloat}" |
| #endif |
| |
| #ifndef ASM_SPEC |
| #define ASM_SPEC "\ |
| %{mbig-endian:-EB} \ |
| %{mlittle-endian:-EL} \ |
| %{mcpu=*:-mcpu=%*} \ |
| %{march=*:-march=%*} \ |
| %{mapcs-*:-mapcs-%*} \ |
| %(subtarget_asm_float_spec) \ |
| %{mthumb-interwork:-mthumb-interwork} \ |
| %{msoft-float:-mfloat-abi=soft} %{mhard-float:-mfloat-abi=hard} \ |
| %{mfloat-abi=*} %{mfpu=*} \ |
| %(subtarget_extra_asm_spec)" |
| #endif |
| |
| /* The ARM uses @ are a comment character so we need to redefine |
| TYPE_OPERAND_FMT. */ |
| #undef TYPE_OPERAND_FMT |
| #define TYPE_OPERAND_FMT "%%%s" |
| |
| /* We might need a ARM specific header to function declarations. */ |
| #undef ASM_DECLARE_FUNCTION_NAME |
| #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ |
| do \ |
| { \ |
| ARM_DECLARE_FUNCTION_NAME (FILE, NAME, DECL); \ |
| ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \ |
| ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \ |
| ASM_OUTPUT_LABEL(FILE, NAME); \ |
| ARM_OUTPUT_FN_UNWIND (FILE, TRUE); \ |
| } \ |
| while (0) |
| |
| /* We might need an ARM specific trailer for function declarations. */ |
| #undef ASM_DECLARE_FUNCTION_SIZE |
| #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \ |
| do \ |
| { \ |
| ARM_OUTPUT_FN_UNWIND (FILE, FALSE); \ |
| ARM_DECLARE_FUNCTION_SIZE (FILE, FNAME, DECL); \ |
| if (!flag_inhibit_size_directive) \ |
| ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME); \ |
| } \ |
| while (0) |
| |
| /* Define this macro if jump tables (for `tablejump' insns) should be |
| output in the text section, along with the assembler instructions. |
| Otherwise, the readonly data section is used. */ |
| /* We put ARM jump tables in the text section, because it makes the code |
| more efficient, but for Thumb it's better to put them out of band. */ |
| /* APPLE LOCAL begin ARM compact switch tables */ |
| /* The above is no longer true. */ |
| #define JUMP_TABLES_IN_TEXT_SECTION (TARGET_EITHER) |
| /* APPLE LOCAL end ARM compact switch tables */ |
| |
| #ifndef LINK_SPEC |
| #define LINK_SPEC "%{mbig-endian:-EB} %{mlittle-endian:-EL} -X" |
| #endif |
| |
| /* Run-time Target Specification. */ |
| #ifndef TARGET_VERSION |
| #define TARGET_VERSION fputs (" (ARM/elf)", stderr) |
| #endif |
| |
| #ifndef TARGET_DEFAULT |
| #define TARGET_DEFAULT (MASK_APCS_FRAME) |
| #endif |
| |
| #ifndef MULTILIB_DEFAULTS |
| #define MULTILIB_DEFAULTS \ |
| { "marm", "mlittle-endian", "msoft-float", "mno-thumb-interwork", "fno-leading-underscore" } |
| #endif |
| |
| #define TARGET_ASM_FILE_START_APP_OFF true |
| #define TARGET_ASM_FILE_START_FILE_DIRECTIVE true |
| |
| |
| /* Output an element in the static constructor array. */ |
| #undef TARGET_ASM_CONSTRUCTOR |
| #define TARGET_ASM_CONSTRUCTOR arm_elf_asm_constructor |
| |
| /* For PIC code we need to explicitly specify (PLT) and (GOT) relocs. */ |
| #define NEED_PLT_RELOC flag_pic |
| #define NEED_GOT_RELOC flag_pic |
| |
| /* The ELF assembler handles GOT addressing differently to NetBSD. */ |
| #define GOT_PCREL 0 |
| |
| /* Biggest alignment supported by the object file format of this |
| machine. Use this macro to limit the alignment which can be |
| specified using the `__attribute__ ((aligned (N)))' construct. If |
| not defined, the default value is `BIGGEST_ALIGNMENT'. */ |
| #define MAX_OFILE_ALIGNMENT (32768 * 8) |
| |
| /* Align output to a power of two. Note ".align 0" is redundant, |
| and also GAS will treat it as ".align 2" which we do not want. */ |
| #define ASM_OUTPUT_ALIGN(STREAM, POWER) \ |
| do \ |
| { \ |
| if ((POWER) > 0) \ |
| fprintf (STREAM, "\t.align\t%d\n", POWER); \ |
| } \ |
| while (0) |
| |
| /* The EABI doesn't provide a way of implementing init_priority. */ |
| #define SUPPORTS_INIT_PRIORITY (!TARGET_AAPCS_BASED) |