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Diffstat (limited to 'gcc_arm/config/arm/coff.h')
| -rwxr-xr-x | gcc_arm/config/arm/coff.h | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/gcc_arm/config/arm/coff.h b/gcc_arm/config/arm/coff.h new file mode 100755 index 0000000..13703ca --- /dev/null +++ b/gcc_arm/config/arm/coff.h @@ -0,0 +1,211 @@ +/* Definitions of target machine for GNU compiler, + for ARM with COFF obj format. + Copyright (C) 1995, 1996, 1997, 1998 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" +#include "arm/aout.h" + +#undef USER_LABEL_PREFIX +#define USER_LABEL_PREFIX "_" + + +/* Run-time Target Specification. */ +#undef TARGET_VERSION +#define TARGET_VERSION fputs (" (ARM/coff)", stderr) + +#undef TARGET_DEFAULT +#define TARGET_DEFAULT (ARM_FLAG_SOFT_FLOAT | ARM_FLAG_APCS_32) + +/* CYGNUS LOCAL nickc/interworking */ +#define MULTILIB_DEFAULTS { "mlittle-endian", "msoft-float", "mapcs-32", "mno-thumb-interwork" } +/* END CYGNUS LOCAL nickc */ + +/* Setting this to 32 produces more efficient code, but the value set in previous + versions of this toolchain was 8, which produces more compact structures. The + command line option -mstructure_size_boundary=<n> can be used to change this + value. */ +#undef STRUCTURE_SIZE_BOUNDARY +#define STRUCTURE_SIZE_BOUNDARY arm_structure_size_boundary + +extern int arm_structure_size_boundary; + +/* 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" + +/* 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) \ + fprintf (STREAM, "%sgcc2_compiled.:\n", LOCAL_LABEL_PREFIX ) + +/* 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 1 + +#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 + +/* If you don't define HAVE_ATEXIT, and the object file format/OS/whatever + does not support constructors/destructors, then gcc implements destructors + by defining its own exit function, which calls the destructors. This gcc + exit function overrides the C library's exit function, and this can cause + all kinds of havoc if the C library has a non-trivial exit function. You + really don't want to use the exit function in libgcc2.c. */ +#define HAVE_ATEXIT + +/* The ARM development system defines __main. */ +#define NAME__MAIN "__gccmain" +#define SYMBOL__MAIN __gccmain |