| /* Definitions of target machine for GNU compiler, |
| for ARM with COFF obj format. |
| Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc. |
| Contributed by Doug Evans (dje@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. */ |
| |
| #include "arm/semi.h" |
| |
| /* Run-time Target Specification. */ |
| #undef TARGET_VERSION |
| #define TARGET_VERSION fputs (" (ARM/coff)", stderr) |
| |
| /* ??? Maybe use --with{enable?}-fpu or some such to make hardware floating |
| point the default. NOT --nfp! --with{enable?} is supposed to replace it |
| (right?), so let's stop using it. */ |
| #undef TARGET_DEFAULT |
| #define TARGET_DEFAULT (ARM_FLAG_SOFT_FLOAT /*+ TARGET_CPU_DEFAULT*/) |
| |
| /* ??? Is a big-endian default intended to be supported? */ |
| #if 0 /*TARGET_CPU_DEFAULT & ARM_FLAG_BIG_END*/ |
| #define MULTILIB_DEFAULTS { "mbig-endian" } |
| #else |
| #define MULTILIB_DEFAULTS { "mlittle-endian" } |
| #endif |
| |
| /* ??? Does arm.h really need to set this to 32? */ |
| #undef STRUCTURE_SIZE_BOUNDARY |
| #define STRUCTURE_SIZE_BOUNDARY 8 |
| |
| /* A C expression whose value is nonzero if IDENTIFIER with arguments ARGS |
| is a valid machine specific attribute for DECL. |
| The attributes in ATTRIBUTES have previously been assigned to DECL. */ |
| extern int arm_valid_machine_decl_attribute (); |
| #define VALID_MACHINE_DECL_ATTRIBUTE(DECL, ATTRIBUTES, IDENTIFIER, ARGS) \ |
| arm_valid_machine_decl_attribute (DECL, ATTRIBUTES, IDENTIFIER, ARGS) |
| |
| /* This is COFF, but prefer stabs. */ |
| #define SDB_DEBUGGING_INFO |
| |
| #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG |
| |
| #include "dbxcoff.h" |
| |
| #undef LOCAL_LABEL_PREFIX |
| #define LOCAL_LABEL_PREFIX "." |
| |
| #undef USER_LABEL_PREFIX |
| #define USER_LABEL_PREFIX "" |
| |
| /* A C statement to output assembler commands which will identify the |
| object file as having been compiled with GNU CC (or another GNU |
| compiler). */ |
| /* Define this to NULL so we don't get anything. |
| We have ASM_IDENTIFY_LANGUAGE. |
| Also, when using stabs, gcc2_compiled must be a stabs entry, not an |
| ordinary symbol, or gdb won't see it. The stabs entry must be |
| before the N_SO in order for gdb to find it. */ |
| #define ASM_IDENTIFY_GCC(STREAM) |
| |
| /* This outputs a lot of .req's to define alias for various registers. |
| Let's try to avoid this. */ |
| #undef ASM_FILE_START |
| #define ASM_FILE_START(STREAM) \ |
| do { \ |
| extern char *version_string; \ |
| fprintf (STREAM, "%s Generated by gcc %s for ARM/coff\n", \ |
| ASM_COMMENT_START, version_string); \ |
| } while (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,\"x\"\n", (NAME)); \ |
| else if ((DECL) && DECL_READONLY_SECTION (DECL, RELOC)) \ |
| fprintf (STREAM, "\t.section %s,\"\"\n", (NAME)); \ |
| else \ |
| fprintf (STREAM, "\t.section %s,\"w\"\n", (NAME)); \ |
| } while (0) |
| |
| /* Support the ctors/dtors and other sections. */ |
| |
| #undef INIT_SECTION_ASM_OP |
| |
| /* 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 |
| |
| #undef READONLY_DATA_SECTION |
| #define READONLY_DATA_SECTION rdata_section |
| #undef RDATA_SECTION_ASM_OP |
| #define RDATA_SECTION_ASM_OP "\t.section .rdata" |
| |
| #undef CTORS_SECTION_ASM_OP |
| #define CTORS_SECTION_ASM_OP "\t.section .ctors,\"x\"" |
| #undef DTORS_SECTION_ASM_OP |
| #define DTORS_SECTION_ASM_OP "\t.section .dtors,\"x\"" |
| |
| /* A list of other sections which the compiler might be "in" at any |
| given time. */ |
| |
| #undef EXTRA_SECTIONS |
| #define EXTRA_SECTIONS SUBTARGET_EXTRA_SECTIONS in_rdata, in_ctors, in_dtors |
| |
| #define SUBTARGET_EXTRA_SECTIONS |
| |
| /* A list of extra section function definitions. */ |
| |
| #undef EXTRA_SECTION_FUNCTIONS |
| #define EXTRA_SECTION_FUNCTIONS \ |
| RDATA_SECTION_FUNCTION \ |
| CTORS_SECTION_FUNCTION \ |
| DTORS_SECTION_FUNCTION \ |
| SUBTARGET_EXTRA_SECTION_FUNCTIONS |
| |
| #define SUBTARGET_EXTRA_SECTION_FUNCTIONS |
| |
| #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 CTORS_SECTION_FUNCTION \ |
| void \ |
| ctors_section () \ |
| { \ |
| if (in_section != in_ctors) \ |
| { \ |
| fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP); \ |
| in_section = in_ctors; \ |
| } \ |
| } |
| |
| #define DTORS_SECTION_FUNCTION \ |
| void \ |
| dtors_section () \ |
| { \ |
| if (in_section != in_dtors) \ |
| { \ |
| fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP); \ |
| in_section = in_dtors; \ |
| } \ |
| } |
| |
| /* Support the ctors/dtors sections for g++. */ |
| |
| #define INT_ASM_OP ".word" |
| |
| /* A C statement (sans semicolon) to output an element in the table of |
| global constructors. */ |
| #undef ASM_OUTPUT_CONSTRUCTOR |
| #define ASM_OUTPUT_CONSTRUCTOR(STREAM,NAME) \ |
| do { \ |
| ctors_section (); \ |
| fprintf (STREAM, "\t%s\t ", INT_ASM_OP); \ |
| assemble_name (STREAM, NAME); \ |
| fprintf (STREAM, "\n"); \ |
| } while (0) |
| |
| /* A C statement (sans semicolon) to output an element in the table of |
| global destructors. */ |
| #undef ASM_OUTPUT_DESTRUCTOR |
| #define ASM_OUTPUT_DESTRUCTOR(STREAM,NAME) \ |
| do { \ |
| dtors_section (); \ |
| fprintf (STREAM, "\t%s\t ", INT_ASM_OP); \ |
| assemble_name (STREAM, NAME); \ |
| fprintf (STREAM, "\n"); \ |
| } while (0) |
| |
| /* __CTOR_LIST__ and __DTOR_LIST__ must be defined by the linker script. */ |
| #define CTOR_LISTS_DEFINED_EXTERNALLY |
| |
| #undef DO_GLOBAL_CTORS_BODY |
| #undef DO_GLOBAL_DTORS_BODY |
| |
| /* The ARM development system has atexit and doesn't have _exit, |
| so define this for now. */ |
| #define HAVE_ATEXIT |
| |
| /* The ARM development system defines __main. */ |
| #define NAME__MAIN "__gccmain" |
| #define SYMBOL__MAIN __gccmain |