gcc/config/clipper/clix.h

   1 /* Definitions of target machine for GNU compiler.  Clipper/Clix version.
   2    Copyright (C) 1988, 1993, 1996, 1997 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, 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21 /* Names to predefine in the preprocessor for this target machine.  */
  22
  23 #define CPP_PREDEFINES "-Dclipper -Dunix -Asystem(unix) -Asystem(svr3) -Acpu(clipper) -Amachine(clipper)"
  24
  25 #undef STARTFILE_SPEC
  26 #define STARTFILE_SPEC  \
  27   "%{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}} crtbegin.o%s"
  28
  29 #undef ENDFILE_SPEC
  30 #define ENDFILE_SPEC "crtend.o%s crtn.o%s"
  31
  32 #undef LIB_SPEC
  33
  34 #define TARGET_MEM_FUNCTIONS
  35
  36 #undef HAVE_ATEXIT
  37 #define HAVE_ATEXIT
  38
  39 #define ASM_OUTPUT_ASCII(FILE,PTR,LEN)                  \
  40 do {                                                    \
  41   unsigned char *s;                                     \
  42   int i;                                                \
  43   for (i = 0, s = (unsigned char *)(PTR); i < (LEN); s++, i++)  \
  44     {                                                   \
  45       if ((i % 8) == 0)                                 \
  46         fputs ("\n\t.byte\t", (FILE));                  \
  47       fprintf ((FILE), "%s0x%x", (i%8?",":""), (unsigned)*s); \
  48     }                                                   \
  49   fputs ("\n", (FILE));                                 \
  50 } while (0)
  51
  52 #undef ASM_OUTPUT_DOUBLE
  53 #define ASM_OUTPUT_DOUBLE(FILE,VALUE)   \
  54 {                                       \
  55   union { int i[2]; double d; } _d_;    \
  56   _d_.d = VALUE;                                \
  57   fprintf (FILE, "\t.long 0x%08x,0x%08x\n", _d_.i[0],_d_.i[1]); \
  58 }
  59
  60 #undef ASM_OUTPUT_FLOAT
  61 #define ASM_OUTPUT_FLOAT(FILE,VALUE)    \
  62 {                                       \
  63   union { int i; float f; } _f_;        \
  64   _f_.f = VALUE;                                \
  65   fprintf (FILE, "\t.long 0x%08x\n", _f_.i); \
  66 }
  67
  68 /* This is how to output an assembler line
  69    that says to advance the location counter
  70    to a multiple of 2**LOG bytes.  */
  71
  72 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
  73   fprintf(FILE, "\t.align %d\n", 1 << (LOG))
  74
  75
  76 #define ASM_LONG ".long"
  77 #define BSS_SECTION_ASM_OP  ".bss"
  78 #undef INIT_SECTION_ASM_OP
  79 #define INIT_SECTION_ASM_OP ".section .init,\"x\""
  80
  81 \f
  82 /* Define a few machine-specific details of the implementation of
  83    constructors.
  84
  85    The __CTORS_LIST__ goes in the .init section.  Define CTOR_LIST_BEGIN
  86    and CTOR_LIST_END to contribute to the .init section an instruction to
  87    push a word containing 0 (or some equivalent of that).
  88
  89    ASM_OUTPUT_CONSTRUCTOR should be defined to push the address of the
  90    constructor.  */
  91
  92 #define CTOR_LIST_BEGIN                         \
  93   asm (INIT_SECTION_ASM_OP);                    \
  94   asm ("subq   $8,sp");                         \
  95   asm ("loadq  $0,r0");                         \
  96   asm ("storw  r0,(sp)")
  97
  98 /* don't need end marker */
  99
 100 #undef CTOR_LIST_END
 101
 102 #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME)       \
 103   do {                                          \
 104     init_section ();                            \
 105     fputs ("\tloada  ", FILE);                  \
 106     assemble_name (FILE, NAME);                 \
 107     fputs (",r0\n\tsubq   $8,sp\n\tstorw   r0,(sp)\n", FILE);   \
 108   } while (0)
 109
 110
 111 /* fini psect is 8 aligned */
 112
 113 #define DTOR_LIST_BEGIN \
 114   asm (DTORS_SECTION_ASM_OP);                           \
 115   func_ptr __DTOR_LIST__[2] = { (func_ptr) (-1), 0 };
 116
 117 /* A C statement (sans semicolon) to output an element in the table of
 118    global destructors.  */
 119
 120 #undef ASM_OUTPUT_DESTRUCTOR
 121 #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME)                                \
 122   do {                                                                  \
 123     fini_section ();                                                    \
 124     fprintf (FILE, "%s\t ", ASM_LONG);                                  \
 125     assemble_name (FILE, NAME);                                         \
 126     fprintf (FILE, ",0\n");                                             \
 127   } while (0)
 128
 129
 130 /* On clix crt1.o first calls init code and then sets environ and a valid
 131    chrclass. Unfortunately stdio routines bomb with unset chrclass.
 132    Therefore we set chrclass prior to calling global constructors. */
 133
 134 #undef DO_GLOBAL_CTORS_BODY
 135 #define DO_GLOBAL_CTORS_BODY                                    \
 136 do {                                                            \
 137   func_ptr *p, *beg = alloca (0);                               \
 138   _setchrclass (0);                                             \
 139   for (p = beg; *p; p+=2)                                       \
 140     ;                                                           \
 141   while (p != beg)                                              \
 142     { p-= 2; (*p) (); }                                         \
 143 } while (0)
 144
 145
 146 #undef DO_GLOBAL_DTORS_BODY
 147 #define DO_GLOBAL_DTORS_BODY    \
 148   func_ptr *f = &__DTOR_LIST__[2];      /* 0,1 contains -1,0 */ \
 149   int n = 0;                                                    \
 150   while (*f)                                                    \
 151     {                                                           \
 152      f+= 2;                             /* skip over alignment 0 */     \
 153      n++;                                                       \
 154     }                                                           \
 155   f -= 2;                                                       \
 156   while (--n >= 0)                                              \
 157     {                                                           \
 158      (*f) ();                                                   \
 159      f-= 2;                             /* skip over alignment 0 */     \
 160     }
 161
 162