gcc/config/clipper/clix.h

   1 /* Definitions of target machine for GNU compiler.  Clipper/Clix version.
   2    Copyright (C) 1988, 1993, 1996, 1997, 1999, 2000 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 #define ASM_OUTPUT_ASCII(FILE,PTR,LEN)                  \
  37 do {                                                    \
  38   const unsigned char *s = (const unsigned char *)(PTR);\
  39   size_t i, limit = (LEN);                              \
  40   for (i = 0; i < limit; s++, i++)                      \
  41     {                                                   \
  42       if ((i % 8) == 0)                                 \
  43         fputs ("\n\t.byte\t", (FILE));                  \
  44       fprintf ((FILE), "%s0x%x", (i%8?",":""), (unsigned)*s); \
  45     }                                                   \
  46   fputs ("\n", (FILE));                                 \
  47 } while (0)
  48
  49 /* This is how to output an assembler line
  50    that says to advance the location counter
  51    to a multiple of 2**LOG bytes.  */
  52
  53 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
  54   fprintf(FILE, "\t.align %d\n", 1 << (LOG))
  55
  56
  57 #define BSS_SECTION_ASM_OP  "\t.bss"
  58 #undef INIT_SECTION_ASM_OP
  59 #define INIT_SECTION_ASM_OP "\t.section .init,\"x\""
  60
  61 \f
  62 /* Define a few machine-specific details of the implementation of
  63    constructors.
  64
  65    The __CTORS_LIST__ goes in the .init section.  Define CTOR_LIST_BEGIN
  66    and CTOR_LIST_END to contribute to the .init section an instruction to
  67    push a word containing 0 (or some equivalent of that).
  68
  69    TARGET_ASM_CONSTRUCTOR should be defined to push the address of the
  70    constructor.  */
  71
  72 #define CTOR_LIST_BEGIN                         \
  73   asm (INIT_SECTION_ASM_OP);                    \
  74   asm ("subq   $8,sp");                         \
  75   asm ("loadq  $0,r0");                         \
  76   asm ("storw  r0,(sp)")
  77
  78 /* don't need end marker */
  79
  80 #undef CTOR_LIST_END
  81
  82 /* fini psect is 8 aligned */
  83
  84 #define DTOR_LIST_BEGIN \
  85   asm (DTORS_SECTION_ASM_OP);                           \
  86   func_ptr __DTOR_LIST__[2] = { (func_ptr) (-1), 0 };
  87
  88 #undef TARGET_ASM_CONSTRUCTOR
  89 #define TARGET_ASM_CONSTRUCTOR  clix_asm_out_constructor
  90 #undef TARGET_ASM_DESTRUCTOR
  91 #define TARGET_ASM_DESTRUCTOR   clix_asm_out_destructor
  92
  93 /* On clix crt1.o first calls init code and then sets environ and a valid
  94    chrclass. Unfortunately stdio routines bomb with unset chrclass.
  95    Therefore we set chrclass prior to calling global constructors. */
  96
  97 #undef DO_GLOBAL_CTORS_BODY
  98 #define DO_GLOBAL_CTORS_BODY                                    \
  99 do {                                                            \
 100   func_ptr *p, *beg = alloca (0);                               \
 101   _setchrclass (0);                                             \
 102   for (p = beg; *p; p+=2)                                       \
 103     ;                                                           \
 104   while (p != beg)                                              \
 105     { p-= 2; (*p) (); }                                         \
 106 } while (0)
 107
 108
 109 #undef DO_GLOBAL_DTORS_BODY
 110 #define DO_GLOBAL_DTORS_BODY    \
 111   func_ptr *f = &__DTOR_LIST__[2];      /* 0,1 contains -1,0 */ \
 112   int n = 0;                                                    \
 113   while (*f)                                                    \
 114     {                                                           \
 115      f+= 2;                             /* skip over alignment 0 */     \
 116      n++;                                                       \
 117     }                                                           \
 118   f -= 2;                                                       \
 119   while (--n >= 0)                                              \
 120     {                                                           \
 121      (*f) ();                                                   \
 122      f-= 2;                             /* skip over alignment 0 */     \
 123     }
 124
 125