diff options
Diffstat (limited to 'gnu/usr.bin/gcc/config/psos.h')
| -rw-r--r-- | gnu/usr.bin/gcc/config/psos.h | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/gnu/usr.bin/gcc/config/psos.h b/gnu/usr.bin/gcc/config/psos.h new file mode 100644 index 00000000000..d4043002a1c --- /dev/null +++ b/gnu/usr.bin/gcc/config/psos.h @@ -0,0 +1,183 @@ +/* Operating system specific defines to be used when targeting GCC for some + embedded system running pSOS. We assume GNU tools with ELF, but + try to maintain compatibility with the MRI tools. Based on svr4.h. + Copyright (C) 1996 Free Software Foundation, Inc. + +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. + + To use this file, make up a file with a name like: + + ?????-psos.h + + where ????? is replaced by the name of the basic hardware that you + are targeting for. Then, in the file ?????-psos.h, put something + like: + + #include "?????.h" + #include "psos.h" + + followed by any really system-specific defines (or overrides of + defines) which you find that you need. +*/ + + +/* Define a symbol indicating that we are using psos.h. */ + +#define USING_PSOS_H + + +/* All pSOS targets currently use the ELF object file format. */ + +#define OBJECT_FORMAT_ELF + + +/* Provide a NULL STARTFILE_SPEC. The startfile cannot be specified + here because it depends on the architecture (e.g. 68K), the + board-support package (e.g. M162) and the run-time configuration + (e.g. application vs. ram-image vs. rom-image). Specify the + startfile in a linker-script created from the generic + architecture-specific linker-scripts. */ + +#undef STARTFILE_SPEC +#define STARTFILE_SPEC "" + + +/* Predefined macros (independent of processor type). */ + +#define CPP_PREDEFINES "-Dpsos" + + +/* Implicit library calls should use ANSI memcpy rather than BSD + bcopy, etc. */ + +#define TARGET_MEM_FUNCTIONS + + +/* 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(FILE) \ +do \ + { \ + fputs (".stabs \"gcc2_compiled.\", 0x3c, 0, 0, 0\n", FILE); \ + } \ +while (0) + +/* This is how we tell the assembler that a symbol is weak. */ + +#define ASM_WEAKEN_LABEL(FILE,NAME) \ + do { fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \ + fputc ('\n', FILE); } while (0) + +/* Switch into a generic section. */ + +#define ASM_OUTPUT_SECTION_NAME(FILE, DECL, NAME, RELOC) \ + fprintf (FILE, ".section\t%s,\"%s\",@progbits\n", NAME, \ + (DECL) && TREE_CODE (DECL) == FUNCTION_DECL ? "ax" : \ + (DECL) && DECL_READONLY_SECTION (DECL, RELOC) ? "a" : "aw") + + +/* Define the pseudo-ops used to switch to the .ctors and .dtors + sections. */ + +#define CTORS_SECTION_ASM_OP ".section\t.ctors,\"aw\"" +#define DTORS_SECTION_ASM_OP ".section\t.dtors,\"aw\"" + +/* A default list of other sections which we might be "in" at any given + time. For targets that use additional sections (e.g. .tdesc) you + should override this definition in the target-specific file which + includes this file. */ + +#undef EXTRA_SECTIONS +#define EXTRA_SECTIONS in_ctors, in_dtors + +/* A default list of extra section function definitions. For targets + that use additional sections (e.g. .tdesc) you should override this + definition in the target-specific file which includes this file. */ + +#undef EXTRA_SECTION_FUNCTIONS +#define EXTRA_SECTION_FUNCTIONS \ + CTORS_SECTION_FUNCTION \ + DTORS_SECTION_FUNCTION + +extern void text_section (); + +#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; \ + } \ +} + +/* A C statement (sans semicolon) to output an element in the table of + global constructors. */ + +#ifndef INT_ASM_OP +#define INT_ASM_OP ".long" +#endif +#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \ + do { \ + ctors_section (); \ + fprintf (FILE, "\t%s\t ", INT_ASM_OP); \ + assemble_name (FILE, NAME); \ + fprintf (FILE, "\n"); \ + } while (0) + +/* A C statement (sans semicolon) to output an element in the table of + global destructors. */ + +#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \ + do { \ + dtors_section (); \ + fprintf (FILE, "\t%s\t ", INT_ASM_OP); \ + assemble_name (FILE, NAME); \ + fprintf (FILE, "\n"); \ + } while (0) + + +/* Use DBX debugging info by default. */ + +#ifndef PREFERRED_DEBUGGING_TYPE +#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG +#endif + +/* For pSOS we use DBX debugging info. */ + +#define DBX_DEBUGGING_INFO + + +/* Prevent generation of an exit function. */ + +#define HAVE_ATEXIT + |