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/* Definitions of target machine for GNU compiler.
For ARM with ELF obj format.
Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001
Free Software Foundation, Inc.
Contributed by Philip Blundell <philb@gnu.org> and
Catherine Moore <clm@cygnus.com>
This file is part of GNU CC.
GNU CC 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.
GNU CC 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 GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, 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} %{msoft-float:-mno-fpu}"
#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} \
%(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); \
} \
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_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. */
#define JUMP_TABLES_IN_TEXT_SECTION (TARGET_ARM)
#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 (ARM_FLAG_SOFT_FLOAT | ARM_FLAG_APCS_32 | ARM_FLAG_APCS_FRAME)
#endif
#ifndef MULTILIB_DEFAULTS
#define MULTILIB_DEFAULTS \
{ "marm", "mlittle-endian", "msoft-float", "mapcs-32", "mno-thumb-interwork", "fno-leading-underscore" }
#endif
/* This outputs a lot of .req's to define alias for various registers.
Let's try to avoid this. */
#ifndef ASM_FILE_START
#define ASM_FILE_START(STREAM) \
do \
{ \
fprintf (STREAM, "%s Generated by gcc %s for ARM/elf\n", \
ASM_COMMENT_START, version_string); \
output_file_directive (STREAM, main_input_filename); \
fprintf (STREAM, ASM_APP_OFF); \
} \
while (0)
#endif
/* Output an internal label definition. */
#undef ASM_OUTPUT_INTERNAL_LABEL
#define ASM_OUTPUT_INTERNAL_LABEL(STREAM, PREFIX, NUM) \
do \
{ \
char * s = (char *) alloca (40 + strlen (PREFIX)); \
extern int arm_target_label, arm_ccfsm_state; \
extern rtx arm_target_insn; \
\
if (arm_ccfsm_state == 3 && arm_target_label == (NUM) \
&& !strcmp (PREFIX, "L")) \
{ \
arm_ccfsm_state = 0; \
arm_target_insn = NULL; \
} \
ASM_GENERATE_INTERNAL_LABEL (s, (PREFIX), (NUM)); \
ASM_OUTPUT_LABEL (STREAM, s); \
} \
while (0)
#undef TARGET_ASM_NAMED_SECTION
#define TARGET_ASM_NAMED_SECTION arm_elf_asm_named_section
#undef ASM_OUTPUT_ALIGNED_COMMON
#define ASM_OUTPUT_ALIGNED_COMMON(STREAM, NAME, SIZE, ALIGN) \
do \
{ \
fprintf (STREAM, "\t.comm\t"); \
assemble_name (STREAM, NAME); \
fprintf (STREAM, ", %d, %d\n", SIZE, ALIGN); \
} \
while (0)
/* 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)
#define SUPPORTS_INIT_PRIORITY 1
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