/* Routines for GCC for ARM/pe.   Copyright (C) 1995, 1996, 2000, 2001, 2002 Free Software Foundation, Inc.   Contributed by Doug Evans (dje@cygnus.com).This file is part of GNU CC.GNU CC is free software; you can redistribute it and/or modifyit under the terms of the GNU General Public License as published bythe 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 ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See theGNU General Public License for more details.You should have received a copy of the GNU General Public Licensealong with GNU CC; see the file COPYING.  If not, write tothe Free Software Foundation, 59 Temple Place - Suite 330,Boston, MA 02111-1307, USA.  */#include "config.h"#include "system.h"#include "rtl.h"#include "output.h"#include "flags.h"#include "tree.h"#include "expr.h"#include "toplev.h"#include "tm_p.h"extern int current_function_anonymous_args;/* Return nonzero if DECL is a dllexport'd object.  */tree current_class_type; /* FIXME */intarm_dllexport_p (decl)     tree decl;{  tree exp;  if (TREE_CODE (decl) != VAR_DECL      && TREE_CODE (decl) != FUNCTION_DECL)    return 0;  exp = lookup_attribute ("dllexport", DECL_ATTRIBUTES (decl));  if (exp)    return 1;  return 0;}/* Return nonzero if DECL is a dllimport'd object.  */intarm_dllimport_p (decl)     tree decl;{  tree imp;  if (TREE_CODE (decl) == FUNCTION_DECL      && TARGET_NOP_FUN_DLLIMPORT)    return 0;  if (TREE_CODE (decl) != VAR_DECL      && TREE_CODE (decl) != FUNCTION_DECL)    return 0;  imp = lookup_attribute ("dllimport", DECL_ATTRIBUTES (decl));  if (imp)    return 1;  return 0;}/* Return nonzero if SYMBOL is marked as being dllexport'd.  */intarm_dllexport_name_p (symbol)     const char * symbol;{  return symbol[0] == ARM_PE_FLAG_CHAR && symbol[1] == 'e' && symbol[2] == '.';}/* Return nonzero if SYMBOL is marked as being dllimport'd.  */intarm_dllimport_name_p (symbol)     const char * symbol;{  return symbol[0] == ARM_PE_FLAG_CHAR && symbol[1] == 'i' && symbol[2] == '.';}/* Mark a DECL as being dllexport'd.   Note that we override the previous setting (eg: dllimport).  */voidarm_mark_dllexport (decl)     tree decl;{  const char * oldname;  char * newname;  rtx rtlname;  tree idp;  rtlname = XEXP (DECL_RTL (decl), 0);  if (GET_CODE (rtlname) == SYMBOL_REF)    oldname = XSTR (rtlname, 0);  else if (GET_CODE (rtlname) == MEM	   && GET_CODE (XEXP (rtlname, 0)) == SYMBOL_REF)    oldname = XSTR (XEXP (rtlname, 0), 0);  else    abort ();  if (arm_dllimport_name_p (oldname))    oldname += 9;  else if (arm_dllexport_name_p (oldname))    return; /* already done */  newname = alloca (strlen (oldname) + 4);  sprintf (newname, "%ce.%s", ARM_PE_FLAG_CHAR, oldname);  /* We pass newname through get_identifier to ensure it has a unique     address.  RTL processing can sometimes peek inside the symbol ref     and compare the string's addresses to see if two symbols are     identical.  */  /* ??? At least I think that's why we do this.  */  idp = get_identifier (newname);  XEXP (DECL_RTL (decl), 0) =    gen_rtx (SYMBOL_REF, Pmode, IDENTIFIER_POINTER (idp));}/* Mark a DECL as being dllimport'd.  */voidarm_mark_dllimport (decl)     tree decl;{  const char * oldname;  char * newname;  tree idp;  rtx rtlname, newrtl;  rtlname = XEXP (DECL_RTL (decl), 0);    if (GET_CODE (rtlname) == SYMBOL_REF)    oldname = XSTR (rtlname, 0);  else if (GET_CODE (rtlname) == MEM	   && GET_CODE (XEXP (rtlname, 0)) == SYMBOL_REF)    oldname = XSTR (XEXP (rtlname, 0), 0);  else    abort ();    if (arm_dllexport_name_p (oldname))    abort (); /* this shouldn't happen */  else if (arm_dllimport_name_p (oldname))    return; /* already done */  /* ??? One can well ask why we're making these checks here,     and that would be a good question.  */  /* Imported variables can't be initialized.  */  if (TREE_CODE (decl) == VAR_DECL      && !DECL_VIRTUAL_P (decl)      && DECL_INITIAL (decl))    {      error_with_decl (decl, "initialized variable `%s' is marked dllimport");      return;    }  /* Nor can they be static.  */  if (TREE_CODE (decl) == VAR_DECL      /* ??? Is this test for vtables needed?  */      && !DECL_VIRTUAL_P (decl)      && 0 /*???*/)    {      error_with_decl (decl, "static variable `%s' is marked dllimport");      return;    }  /* `extern' needn't be specified with dllimport.     Specify `extern' now and hope for the best.  Sigh.  */  if (TREE_CODE (decl) == VAR_DECL      /* ??? Is this test for vtables needed?  */      && !DECL_VIRTUAL_P (decl))    {      DECL_EXTERNAL (decl) = 1;      TREE_PUBLIC (decl) = 1;    }  newname = alloca (strlen (oldname) + 11);  sprintf (newname, "%ci.__imp_%s", ARM_PE_FLAG_CHAR, oldname);  /* We pass newname through get_identifier to ensure it has a unique     address.  RTL processing can sometimes peek inside the symbol ref     and compare the string's addresses to see if two symbols are     identical.  */  /* ??? At least I think that's why we do this.  */  idp = get_identifier (newname);  newrtl = gen_rtx (MEM, Pmode,		    gen_rtx (SYMBOL_REF, Pmode,			     IDENTIFIER_POINTER (idp)));  XEXP (DECL_RTL (decl), 0) = newrtl;}voidarm_pe_encode_section_info (decl, first)     tree decl;     int first ATTRIBUTE_UNUSED;{  /* This bit is copied from arm_encode_section_info.  */  if (optimize > 0 && TREE_CONSTANT (decl)      && (!flag_writable_strings || TREE_CODE (decl) != STRING_CST))    {      rtx rtl = (TREE_CODE_CLASS (TREE_CODE (decl)) != 'd'                 ? TREE_CST_RTL (decl) : DECL_RTL (decl));      SYMBOL_REF_FLAG (XEXP (rtl, 0)) = 1;    }  /* Mark the decl so we can tell from the rtl whether the object is     dllexport'd or dllimport'd.  */  if (arm_dllexport_p (decl))    arm_mark_dllexport (decl);  else if (arm_dllimport_p (decl))    arm_mark_dllimport (decl);  /* It might be that DECL has already been marked as dllimport, but a     subsequent definition nullified that.  The attribute is gone but     DECL_RTL still has @i.__imp_foo.  We need to remove that.  */  else if ((TREE_CODE (decl) == FUNCTION_DECL	    || TREE_CODE (decl) == VAR_DECL)	   && DECL_RTL (decl) != NULL_RTX	   && GET_CODE (DECL_RTL (decl)) == MEM	   && GET_CODE (XEXP (DECL_RTL (decl), 0)) == MEM	   && GET_CODE (XEXP (XEXP (DECL_RTL (decl), 0), 0)) == SYMBOL_REF	   && arm_dllimport_name_p (XSTR (XEXP (XEXP (DECL_RTL (decl), 0), 0), 0)))    {      const char *oldname = XSTR (XEXP (XEXP (DECL_RTL (decl), 0), 0), 0);      tree idp = get_identifier (oldname + 9);      rtx newrtl = gen_rtx (SYMBOL_REF, Pmode, IDENTIFIER_POINTER (idp));      XEXP (DECL_RTL (decl), 0) = newrtl;      /* We previously set TREE_PUBLIC and DECL_EXTERNAL.	 ??? We leave these alone for now.  */    }}voidarm_pe_unique_section (decl, reloc)     tree decl;     int reloc;{  int len;  const char * name;  char * string;  const char * prefix;  name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));  name = arm_strip_name_encoding (name);  /* The object is put in, for example, section .text$foo.     The linker will then ultimately place them in .text     (everything from the $ on is stripped).  */  if (TREE_CODE (decl) == FUNCTION_DECL)    prefix = ".text$";  else if (decl_readonly_section (decl, reloc))    prefix = ".rdata$";  else    prefix = ".data$";  len = strlen (name) + strlen (prefix);  string = alloca (len + 1);  sprintf (string, "%s%s", prefix, name);  DECL_SECTION_NAME (decl) = build_string (len, string);}