gcc/config/i386/sun.h

   1 /* Definitions for Intel 386 running SunOS 4.0.
   2    Copyright (C) 1988 Free Software Foundation, Inc.
   3
   4 This file is part of GNU CC.
   5
   6 GNU CC is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU CC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU CC; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20
  21 #include "i386.h"
  22
  23 /* Use the Sun assembler syntax.  */
  24
  25 #include "sun386.h"
  26
  27 /* By default, target has a 80387.  */
  28
  29 #define TARGET_DEFAULT 1
  30
  31 /* Use crt0.o as a startup file.  */
  32
  33 #define STARTFILE_SPEC  \
  34   "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}"
  35
  36 #define LIB_SPEC "%{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}\
  37 %{g:-lg} %{sun386:}"
  38 /* That last item is just to prevent a spurious error.  */
  39
  40 #undef LINK_SPEC
  41 #define LINK_SPEC "%{!e*:-e _start} -dc -dp %{g:-Bstatic} %{static:-Bstatic}"
  42
  43 /* Extra switches to give the assembler.  */
  44
  45 #define ASM_SPEC "-i386"
  46
  47 /* Specify predefined symbols in preprocessor.  */
  48
  49 #define CPP_PREDEFINES "-Dunix -Di386 -Dsun386 -Dsun"
  50
  51 /* Allow #sccs in preprocessor.  */
  52
  53 #define SCCS_DIRECTIVE
  54
  55 /* Output #ident as a .ident.  */
  56
  57 #define ASM_OUTPUT_IDENT(FILE, NAME) fprintf (FILE, "\t.ident \"%s\"\n", NAME);
  58
  59 /* We don't want to output SDB debugging information.  */
  60
  61 #undef SDB_DEBUGGING_INFO
  62
  63 /* We want to output DBX debugging information.  */
  64
  65 #define DBX_DEBUGGING_INFO
  66
  67 /* Implicit library calls should use memcpy, not bcopy, etc.  */
  68
  69 #define TARGET_MEM_FUNCTIONS
  70
  71 /* Force structure alignment to the type used for a bitfield.  */
  72
  73 #define PCC_BITFIELD_TYPE_MATTERS 1
  74
  75 /* Define how to find the value returned by a function.
  76    VALTYPE is the data type of the value (as a tree).
  77    If the precise function being called is known, FUNC is its FUNCTION_DECL;
  78    otherwise, FUNC is 0.  */
  79
  80 #define VALUE_REGNO(MODE) \
  81   (((MODE)==SFmode || (MODE)==DFmode) ? FIRST_FLOAT_REG : 0)
  82
  83 /* 1 if N is a possible register number for a function value. */
  84
  85 #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0 || (N)== FIRST_FLOAT_REG)
  86
  87 /* This is partly guess.  */
  88
  89 #undef DBX_REGISTER_NUMBER
  90 #define DBX_REGISTER_NUMBER(n) \
  91   ((n) == 0 ? 11 : (n)  == 1 ? 9 : (n) == 2 ? 10 : (n) == 3 ? 8 \
  92    : (n) == 4 ? 5 : (n) == 5 ? 4 : (n) == 6 ? 6 : (n))
  93
  94 /* Every debugger symbol must be in the text section.
  95    Otherwise the assembler or the linker screws up.  */
  96
  97 #define DEBUG_SYMS_TEXT