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Diffstat (limited to 'gcc/config/m68k/openbsd.h')
| -rw-r--r-- | gcc/config/m68k/openbsd.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/gcc/config/m68k/openbsd.h b/gcc/config/m68k/openbsd.h new file mode 100644 index 00000000000..bdec4563393 --- /dev/null +++ b/gcc/config/m68k/openbsd.h @@ -0,0 +1,121 @@ +/* Configuration file for an m68k OpenBSD target. + Copyright (C) 1999 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. */ + +/* m68k is an old configuration that does not yet use the TARGET_CPU_DEFAULT + framework. */ +#define TARGET_DEFAULT (MASK_BITFIELD | MASK_68881 | MASK_68020) + +#include <m68k/m68k.h> + +/* Get generic OpenBSD definitions. */ +#define OBSD_OLD_GAS +#include <openbsd.h> + +/* Define __HAVE_68881__ in preprocessor, unless -msoft-float is specified. + This will control the use of inline 68881 insns in certain macros. */ +#undef CPP_SPEC +#define CPP_SPEC "%{!msoft-float:-D__HAVE_68881__ -D__HAVE_FPU__} %{posix:-D_POSIX_SOURCE} %{pthread:-D_POSIX_THREADS}" + +/* Run-time target specifications */ +#define CPP_PREDEFINES "-D__unix__ -D__m68k__ -D__mc68000__ -D__mc68020__ -D__OpenBSD__ -Asystem(unix) -Asystem(OpenBSD) -Acpu(m68k) -Amachine(m68k)" + +/* TODO: activate subtarget types when gas is updated. +#define ASM_SPEC "%| %{m68030} %{m68040} %{m68060} %{fpic:-k} %{fPIC:-k -K}" + */ + +/* Layout of source language data types. */ + +/* This must agree with <machine/ansi.h> */ +#undef SIZE_TYPE +#define SIZE_TYPE "unsigned int" + +#undef PTRDIFF_TYPE +#define PTRDIFF_TYPE "int" + +#undef WCHAR_TYPE +#define WCHAR_TYPE "int" + +#undef WCHAR_TYPE_SIZE +#define WCHAR_TYPE_SIZE 32 + +/* Storage layout. */ + +/* Every structure or union's size must be a multiple of 2 bytes. */ +#define STRUCTURE_SIZE_BOUNDARY 16 + +/* Specific options for DBX Output. */ + +/* This is BSD, so it wants DBX format. */ +#define DBX_DEBUGGING_INFO + +/* Do not break .stabs pseudos into continuations. */ +#define DBX_CONTIN_LENGTH 0 + +/* This is the char to use for continuation (in case we need to turn + continuation back on). */ +#define DBX_CONTIN_CHAR '?' + +/* Stack & calling: aggregate returns. */ + +/* Don't default to pcc-struct-return, because gcc is the only compiler, and + we want to retain compatibility with older gcc versions. */ +#define DEFAULT_PCC_STRUCT_RETURN 0 + +/* Assembler format: exception region output. */ + +/* All configurations that don't use elf must be explicit about not using + dwarf unwind information. egcs doesn't try too hard to check internal + configuration files... */ +#define DWARF2_UNWIND_INFO 0 + + +/* TODO: ASM_OUTPUT_MI_THUNK is busted. I need to figure out + what bra func@PLTPC means under linux, and find the corresponding + construction for our gas/pic setup. */ +#if 0 +/* Taken from linux.h. Processor dependent optimized code to handle C++ + multiple inheritance vtable lookup. */ + +/* Output code to add DELTA to the first argument, and then jump to FUNCTION. + Used for C++ multiple inheritance. */ +#define ASM_OUTPUT_MI_THUNK(FILE, THUNK_FNDECL, DELTA, FUNCTION) \ +do { \ + if (DELTA > 0 && DELTA <= 8) \ + asm_fprintf (FILE, "\taddq.l %I%d,4(%Rsp)\n", DELTA); \ + else if (DELTA < 0 && DELTA >= -8) \ + asm_fprintf (FILE, "\tsubq.l %I%d,4(%Rsp)\n", -DELTA); \ + else \ + asm_fprintf (FILE, "\tadd.l %I%d,4(%Rsp)\n", DELTA); \ + \ + if (flag_pic) \ + { \ + fprintf (FILE, "\tbra.l "); \ + assemble_name (FILE, XSTR (XEXP (DECL_RTL (FUNCTION), 0), 0)); \ + fprintf (FILE, "@PLTPC\n"); \ + } \ + else \ + { \ + fprintf (FILE, "\tjmp "); \ + assemble_name (FILE, XSTR (XEXP (DECL_RTL (FUNCTION), 0), 0)); \ + fprintf (FILE, "\n"); \ + } \ +} while (0) +#endif + |