/* 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 and Catherine Moore 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 }, #endif #ifndef SUBTARGET_EXTRA_ASM_SPEC #define SUBTARGET_EXTRA_ASM_SPEC "" #endif #ifndef ASM_SPEC #define ASM_SPEC "\ %{mbig-endian:-EB} \ %{mcpu=*:-m%*} \ %{march=*:-m%*} \ %{mapcs-*:-mapcs-%*} \ %{mapcs-float:-mfloat} \ %{msoft-float:-mno-fpu} \ %{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); \ fprintf (FILE, "%s", TYPE_ASM_OP); \ assemble_name (FILE, NAME); \ putc (',', FILE); \ fprintf (FILE, TYPE_OPERAND_FMT, "function"); \ putc ('\n', FILE); \ 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) \ { \ char label[256]; \ static int labelno; \ labelno ++; \ ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno); \ ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno); \ fprintf (FILE, "%s", SIZE_ASM_OP); \ assemble_name (FILE, (FNAME)); \ fprintf (FILE, ","); \ assemble_name (FILE, label); \ fprintf (FILE, "-"); \ assemble_name (FILE, (FNAME)); \ putc ('\n', FILE); \ } \ } \ 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. */ #define JUMP_TABLES_IN_TEXT_SECTION 1 #ifndef LINK_SPEC #define LINK_SPEC "%{mbig-endian:-EB} -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)