/* Definitions for non-Linux based ARM systems using ELF Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc. Contributed by 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 this program; see the file COPYING. If not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Run-time Target Specification. */ #ifndef TARGET_VERSION #define TARGET_VERSION fputs (" (ARM/ELF non-Linux)", stderr); #endif /* Default to using APCS-32 and software floating point. */ #ifndef TARGET_DEFAULT #define TARGET_DEFAULT (ARM_FLAG_SOFT_FLOAT | ARM_FLAG_APCS_32 | ARM_FLAG_APCS_FRAME) #endif /* Now we define the strings used to build the spec file. */ #define STARTFILE_SPEC "crtbegin%O%s crt0%O%s" #define ENDFILE_SPEC "crtend%O%s" #define USER_LABEL_PREFIX "" #define LOCAL_LABEL_PREFIX "." #define TEXT_SECTION " .text" #define INVOKE__main /* Debugging */ #define DWARF_DEBUGGING_INFO #define DWARF2_DEBUGGING_INFO #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG /* Support for Constructors and Destrcutors . */ #define READONLY_DATA_SECTION rdata_section /* A list of other sections which the compiler might be "in" at any given time. */ #define SUBTARGET_EXTRA_SECTIONS in_rdata, /* A list of extra section function definitions. */ #define SUBTARGET_EXTRA_SECTION_FUNCTIONS RDATA_SECTION_FUNCTION #define RDATA_SECTION_ASM_OP "\t.section .rodata" #define RDATA_SECTION_FUNCTION \ void \ rdata_section () \ { \ if (in_section != in_rdata) \ { \ fprintf (asm_out_file, "%s\n", RDATA_SECTION_ASM_OP); \ in_section = in_rdata; \ } \ } #define CTOR_LIST_BEGIN \ asm (CTORS_SECTION_ASM_OP); \ func_ptr __CTOR_LIST__[1] = { (func_ptr) (-1) } #define CTOR_LIST_END \ asm (CTORS_SECTION_ASM_OP); \ func_ptr __CTOR_END__[1] = { (func_ptr) 0 }; #define DTOR_LIST_BEGIN \ asm (DTORS_SECTION_ASM_OP); \ func_ptr __DTOR_LIST__[1] = { (func_ptr) (-1) } #define DTOR_LIST_END \ asm (DTORS_SECTION_ASM_OP); \ func_ptr __DTOR_END__[1] = { (func_ptr) 0 }; /* A C statement to output something to the assembler file to switch to section NAME for object DECL which is either a FUNCTION_DECL, a VAR_DECL or NULL_TREE. Some target formats do not support arbitrary sections. Do not define this macro in such cases. */ #define ASM_OUTPUT_SECTION_NAME(STREAM, DECL, NAME, RELOC) \ do \ { \ if ((DECL) && TREE_CODE (DECL) == FUNCTION_DECL) \ fprintf (STREAM, "\t.section %s,\"ax\",@progbits\n", (NAME)); \ else if ((DECL) && DECL_READONLY_SECTION (DECL, RELOC)) \ fprintf (STREAM, "\t.section %s,\"a\"\n", (NAME)); \ else if (! strncmp (NAME, ".bss", 4)) \ fprintf (STREAM, "\t.section %s,\"aw\",@nobits\n", (NAME)); \ else \ fprintf (STREAM, "\t.section %s,\"aw\"\n", (NAME)); \ } \ while (0) /* Don't know how to order these. UNALIGNED_WORD_ASM_OP is in dwarf2.out. */ #define UNALIGNED_WORD_ASM_OP "\t.4byte\t" #define ASM_OUTPUT_DWARF2_ADDR_CONST(FILE,ADDR) \ fprintf ((FILE), "%s%s", UNALIGNED_WORD_ASM_OP, ADDR) #define ASM_OUTPUT_DWARF_ADDR_CONST(FILE,RTX) \ do \ { \ fprintf ((FILE), "%s", UNALIGNED_WORD_ASM_OP); \ output_addr_const ((FILE), (RTX)); \ fputc ('\n', (FILE)); \ } \ while (0) /* The ARM development system defines __main. */ #define NAME__MAIN "__gccmain" #define SYMBOL__MAIN __gccmain /* Return a non-zero value if DECL has a section attribute. */ #define IN_NAMED_SECTION(DECL) \ ((TREE_CODE (DECL) == FUNCTION_DECL || TREE_CODE (DECL) == VAR_DECL) \ && DECL_SECTION_NAME (DECL) != NULL_TREE) #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1) #define UNIQUE_SECTION_P(DECL) (DECL_ONE_ONLY (DECL)) #define UNIQUE_SECTION(DECL, RELOC) \ do \ { \ int len; \ int sec; \ const char * name; \ char * string; \ char * prefix; \ static char * prefixes[4][2] = \ { \ { ".text.", ".gnu.linkonce.t." }, \ { ".rodata.", ".gnu.linkonce.r." }, \ { ".data.", ".gnu.linkonce.d." }, \ { ".bss.", ".gnu.linkonce.b." } \ }; \ \ if (TREE_CODE (DECL) == FUNCTION_DECL) \ sec = 0; \ else if (DECL_READONLY_SECTION (DECL, RELOC)) \ sec = 1; \ else if (DECL_INITIAL (DECL) == NULL_TREE) \ sec = 3; \ else \ sec = 2; \ \ prefix = prefixes[sec][DECL_ONE_ONLY(DECL)]; \ name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL)); \ \ /* Strip off any encoding in name. */ \ STRIP_NAME_ENCODING (name, name); \ \ len = strlen (name) + strlen (prefix); \ string = alloca (len + 1); \ \ sprintf (string, "%s%s", prefix, name); \ \ DECL_SECTION_NAME (DECL) = build_string (len, string); \ } \ while (0) #undef ASM_OUTPUT_ALIGNED_BSS #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ do \ { \ if (IN_NAMED_SECTION (DECL)) \ named_section (DECL, NULL, 0); \ else \ bss_section (); \ \ ASM_GLOBALIZE_LABEL (FILE, NAME); \ \ ASM_OUTPUT_ALIGN (FILE, floor_log2 (ALIGN / BITS_PER_UNIT)); \ \ last_assemble_variable_decl = DECL; \ ASM_DECLARE_OBJECT_NAME (FILE, NAME, DECL); \ ASM_OUTPUT_SKIP (FILE, SIZE ? SIZE : 1); \ } \ while (0) #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \ do \ { \ if (IN_NAMED_SECTION (DECL)) \ named_section (DECL, NULL, 0); \ else \ bss_section (); \ \ ASM_OUTPUT_ALIGN (FILE, floor_log2 (ALIGN / BITS_PER_UNIT)); \ ASM_OUTPUT_LABEL (FILE, NAME); \ fprintf (FILE, "\t.space\t%d\n", SIZE); \ } \ while (0) #ifndef CPP_APCS_PC_DEFAULT_SPEC #define CPP_APCS_PC_DEFAULT_SPEC "-D__APCS_32__" #endif #ifndef SUBTARGET_CPU_DEFAULT #define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm7tdmi #endif /* Now get the routine arm-elf definitions. */ #include "elf.h"