gcc/config/i386/interix.c

   1 /* Subroutines for insn-output.c for Windows NT.
   2    Copyright (C) 1998, 1999 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 #include "config.h"
  22 #include "system.h"
  23 #include "rtl.h"
  24 #include "regs.h"
  25 #include "hard-reg-set.h"
  26 #include "output.h"
  27 #include "tree.h"
  28 #include "flags.h"
  29
  30 /* Return string which is the former assembler name modified with a
  31    suffix consisting of an atsign (@) followed by the number of bytes of
  32    arguments */
  33
  34 char *
  35 gen_stdcall_suffix (decl)
  36   tree decl;
  37 {
  38   int total = 0;
  39   /* ??? This probably should use XSTR (XEXP (DECL_RTL (decl), 0), 0) instead
  40      of DECL_ASSEMBLER_NAME.  */
  41   char *asmname = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
  42   char *newsym;
  43
  44   if (TYPE_ARG_TYPES (TREE_TYPE (decl)))
  45     if (TREE_VALUE (tree_last (TYPE_ARG_TYPES (TREE_TYPE (decl))))
  46         == void_type_node)
  47       {
  48         tree formal_type = TYPE_ARG_TYPES (TREE_TYPE (decl));
  49
  50         while (TREE_VALUE (formal_type) != void_type_node)
  51           {
  52             int parm_size
  53               = TREE_INT_CST_LOW (TYPE_SIZE (TREE_VALUE (formal_type)));
  54             /* Must round up to include padding.  This is done the same
  55                way as in store_one_arg.  */
  56             parm_size = ((parm_size + PARM_BOUNDARY - 1)
  57                          / PARM_BOUNDARY * PARM_BOUNDARY);
  58             total += parm_size;
  59             formal_type = TREE_CHAIN (formal_type);
  60           }
  61       }
  62
  63   newsym = xmalloc (strlen (asmname) + 10);
  64   sprintf (newsym, "%s@%d", asmname, total/BITS_PER_UNIT);
  65   return IDENTIFIER_POINTER (get_identifier (newsym));
  66 }
  67
  68 #if 0
  69 /* Turn this back on when the linker is updated to handle grouped
  70    .data$ sections correctly. See corresponding note in i386/interix.h.
  71    MK. */
  72
  73 /* Cover function for UNIQUE_SECTION.  */
  74
  75 void
  76 i386_pe_unique_section (decl, reloc)
  77      tree decl;
  78      int reloc;
  79 {
  80   int len;
  81   const char *name;
  82   char *string,*prefix;
  83
  84   name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
  85   /* Strip off any encoding in fnname.  */
  86   STRIP_NAME_ENCODING (name, name);
  87
  88   /* The object is put in, for example, section .text$foo.
  89      The linker will then ultimately place them in .text
  90      (everything from the $ on is stripped). Don't put
  91      read-only data in .rdata section to avoid a PE linker
  92      bug when .rdata$* grouped sections are used in code
  93      without a .rdata section.  */
  94   if (TREE_CODE (decl) == FUNCTION_DECL)
  95     prefix = ".text$";
  96 /* else if (DECL_INITIAL (decl) == 0
  97            || DECL_INITIAL (decl) == error_mark_node)
  98     prefix = ".bss"; */
  99   else if (DECL_READONLY_SECTION (decl, reloc))
 100 #ifdef READONLY_DATA_SECTION
 101     prefix = ".rdata$";
 102 #else
 103     prefix = ".text$";
 104 #endif
 105   else
 106     prefix = ".data$";
 107   len = strlen (name) + strlen (prefix);
 108   string = alloca (len + 1);
 109   sprintf (string, "%s%s", prefix, name);
 110
 111   DECL_SECTION_NAME (decl) = build_string (len, string);
 112 }
 113
 114 #endif /* 0 */