ASM_WEAKEN_LABEL (asm_out_file, fnname);
{ ASM_WEAKEN_LABEL (asm_out_file, fnname);  remove_from_pending_weak_list (IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); }
static char *compare_constant_1		PROTO((tree, char *));static struct constant_descriptor *record_constant PROTO((tree));static void record_constant_1		PROTO((tree));static tree copy_constant		PROTO((tree));static void output_constant_def_contents  PROTO((tree, int, int));static void decode_rtx_const		PROTO((enum machine_mode, rtx,					       struct rtx_const *));static int const_hash_rtx		PROTO((enum machine_mode, rtx));static int compare_constant_rtx		PROTO((enum machine_mode, rtx,					       struct constant_descriptor *));static struct constant_descriptor *record_constant_rtx PROTO((enum machine_mode,							      rtx));static struct pool_constant *find_pool_constant PROTO((rtx));static void mark_constant_pool		PROTO((void));static void mark_constants		PROTO((rtx));static int output_addressed_constants	PROTO((tree));static void output_after_function_constants PROTO((void));static void output_constructor		PROTO((tree, int));#ifdef ASM_OUTPUT_BSSstatic void asm_output_bss		PROTO((FILE *, tree, char *, int, int));#endif#ifdef BSS_SECTION_ASM_OP#ifdef ASM_OUTPUT_ALIGNED_BSSstatic void asm_output_aligned_bss	PROTO((FILE *, tree, char *, int, int));#endif#endif /* BSS_SECTION_ASM_OP */static enum in_section { no_section, in_text, in_data, in_named#ifdef BSS_SECTION_ASM_OP  , in_bss#endif#ifdef EH_FRAME_SECTION_ASM_OP  , in_eh_frame#endif#ifdef EXTRA_SECTIONS  , EXTRA_SECTIONS#endif} in_section = no_section;/* Return a non-zero value if DECL has a section attribute.  */#define IN_NAMED_SECTION(DECL) \  ((TREE_CODE (DECL) == FUNCTION_DECL || TREE_CODE (DECL) == VAR_DECL) \   && DECL_SECTION_NAME (DECL) != NULL_TREE)/* Text of section name when in_section == in_named.  */static char *in_named_name;/* Define functions like text_section for any extra sections.  */#ifdef EXTRA_SECTION_FUNCTIONSEXTRA_SECTION_FUNCTIONS#endif/* Tell assembler to switch to text section.  */voidtext_section (){  if (in_section != in_text)    {      fprintf (asm_out_file, "%s\n", TEXT_SECTION_ASM_OP);      in_section = in_text;    }}/* Tell assembler to switch to data section.  */voiddata_section (){  if (in_section != in_data)    {      if (flag_shared_data)	{#ifdef SHARED_SECTION_ASM_OP	  fprintf (asm_out_file, "%s\n", SHARED_SECTION_ASM_OP);#else	  fprintf (asm_out_file, "%s\n", DATA_SECTION_ASM_OP);#endif	}      else	fprintf (asm_out_file, "%s\n", DATA_SECTION_ASM_OP);      in_section = in_data;    }}/* Tell assembler to ALWAYS switch to data section, in case   it's not sure where it it.  */voidforce_data_section (){  in_section = no_section;  data_section ();}/* Tell assembler to switch to read-only data section.  This is normally   the text section.  */voidreadonly_data_section (){#ifdef READONLY_DATA_SECTION  READONLY_DATA_SECTION ();  /* Note this can call data_section.  */#else  text_section ();#endif}/* Determine if we're in the text section.  */intin_text_section (){  return in_section == in_text;}/* Determine if we're in the data section.  */intin_data_section (){  return in_section == in_data;}/* Tell assembler to change to section NAME for DECL.   If DECL is NULL, just switch to section NAME.   If NAME is NULL, get the name from DECL.   If RELOC is 1, the initializer for DECL contains relocs.  */voidnamed_section (decl, name, reloc)     tree decl;     const char *name;     int reloc ATTRIBUTE_UNUSED;{  if (decl != NULL_TREE      && TREE_CODE_CLASS (TREE_CODE (decl)) != 'd')    abort ();  if (name == NULL)    name = TREE_STRING_POINTER (DECL_SECTION_NAME (decl));  if (in_section != in_named || strcmp (name, in_named_name))    {#ifdef ASM_OUTPUT_SECTION_NAME      ASM_OUTPUT_SECTION_NAME (asm_out_file, decl, name, reloc);#else      /* Section attributes are not supported if this macro isn't provided -	 some host formats don't support them at all.  The front-end should	 already have flagged this as an error.  */      abort ();#endif      in_named_name = obstack_alloc (&permanent_obstack, strlen (name) + 1);      strcpy (in_named_name, name);      in_section = in_named;    }}#ifdef ASM_OUTPUT_SECTION_NAME#ifndef UNIQUE_SECTION#define UNIQUE_SECTION(DECL,RELOC)				\do {								\  int len;							\  char *name, *string;						\								\  name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL));	\  /* Strip off any encoding in name.  */			\  STRIP_NAME_ENCODING (name, name);				\								\  len = strlen (name) + 1;					\  string = alloca (len + 1);					\  sprintf (string, ".%s", name);				\								\  DECL_SECTION_NAME (DECL) = build_string (len, string);	\} while (0)#endif#ifndef UNIQUE_SECTION_P#define UNIQUE_SECTION_P(DECL) 0#endif#endif#ifdef BSS_SECTION_ASM_OP/* Tell the assembler to switch to the bss section.  */voidbss_section (){  if (in_section != in_bss)    {#ifdef SHARED_BSS_SECTION_ASM_OP      if (flag_shared_data)	fprintf (asm_out_file, "%s\n", SHARED_BSS_SECTION_ASM_OP);      else#endif	fprintf (asm_out_file, "%s\n", BSS_SECTION_ASM_OP);      in_section = in_bss;    }}#ifdef ASM_OUTPUT_BSS/* Utility function for ASM_OUTPUT_BSS for targets to use if   they don't support alignments in .bss.   ??? It is believed that this function will work in most cases so such   support is localized here.  */static voidasm_output_bss (file, decl, name, size, rounded)     FILE *file;     tree decl;     char *name;     int size, rounded;{  ASM_GLOBALIZE_LABEL (file, name);  bss_section ();#ifdef ASM_DECLARE_OBJECT_NAME  last_assemble_variable_decl = decl;  ASM_DECLARE_OBJECT_NAME (file, name, decl);#else  /* Standard thing is just output label for the object.  */  ASM_OUTPUT_LABEL (file, name);#endif /* ASM_DECLARE_OBJECT_NAME */  ASM_OUTPUT_SKIP (file, rounded);}#endif#ifdef ASM_OUTPUT_ALIGNED_BSS/* Utility function for targets to use in implementing   ASM_OUTPUT_ALIGNED_BSS.   ??? It is believed that this function will work in most cases so such   support is localized here.  */static voidasm_output_aligned_bss (file, decl, name, size, align)     FILE *file;     tree decl;     char *name;     int size, align;{  ASM_GLOBALIZE_LABEL (file, name);  bss_section ();  ASM_OUTPUT_ALIGN (file, floor_log2 (align / BITS_PER_UNIT));#ifdef ASM_DECLARE_OBJECT_NAME  last_assemble_variable_decl = decl;  ASM_DECLARE_OBJECT_NAME (file, name, decl);#else  /* Standard thing is just output label for the object.  */  ASM_OUTPUT_LABEL (file, name);#endif /* ASM_DECLARE_OBJECT_NAME */  ASM_OUTPUT_SKIP (file, size ? size : 1);}#endif#endif /* BSS_SECTION_ASM_OP */#ifdef EH_FRAME_SECTION_ASM_OPvoideh_frame_section (){  if (in_section != in_eh_frame)    {      fprintf (asm_out_file, "%s\n", EH_FRAME_SECTION_ASM_OP);      in_section = in_eh_frame;    }} #endif/* Switch to the section for function DECL.   If DECL is NULL_TREE, switch to the text section.   ??? It's not clear that we will ever be passed NULL_TREE, but it's   safer to handle it.  */voidfunction_section (decl)     tree decl;{  if (decl != NULL_TREE      && DECL_SECTION_NAME (decl) != NULL_TREE)    named_section (decl, (char *) 0, 0);  else    text_section ();}/* Switch to section for variable DECL.   RELOC is the `reloc' argument to SELECT_SECTION.  */voidvariable_section (decl, reloc)     tree decl;     int reloc;{  if (IN_NAMED_SECTION (decl))    named_section (decl, NULL, reloc);  else    {      /* C++ can have const variables that get initialized from constructors,	 and thus can not be in a readonly section.  We prevent this by	 verifying that the initial value is constant for objects put in a	 readonly section.	 error_mark_node is used by the C front end to indicate that the	 initializer has not been seen yet.  In this case, we assume that	 the initializer must be constant.	 C++ uses error_mark_node for variables that have complicated	 initializers, but these variables go in BSS so we won't be called	 for them.  */#ifdef SELECT_SECTION      SELECT_SECTION (decl, reloc);#else      if (DECL_READONLY_SECTION (decl, reloc))	readonly_data_section ();      else	data_section ();#endif    }}/* Tell assembler to switch to the section for the exception handling   table.  */voidexception_section (){#if defined (EXCEPTION_SECTION)  EXCEPTION_SECTION ();#else#ifdef ASM_OUTPUT_SECTION_NAME  named_section (NULL_TREE, ".gcc_except_table", 0);#else  if (flag_pic)    data_section ();  else    readonly_data_section ();#endif#endif}/* Create the rtl to represent a function, for a function definition.   DECL is a FUNCTION_DECL node which describes which function.   The rtl is stored into DECL.  */voidmake_function_rtl (decl)     tree decl;{  char *name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));  char *new_name = name;  /* Rename a nested function to avoid conflicts.  */  if (decl_function_context (decl) != 0      && DECL_INITIAL (decl) != 0      && DECL_RTL (decl) == 0)    {      char *label;      name = IDENTIFIER_POINTER (DECL_NAME (decl));      ASM_FORMAT_PRIVATE_NAME (label, name, var_labelno);      name = obstack_copy0 (saveable_obstack, label, strlen (label));      var_labelno++;    }  else    {      /* When -fprefix-function-name is used, every function name is         prefixed.  Even static functions are prefixed because they         could be declared latter.  Note that a nested function name         is not prefixed.  */      if (flag_prefix_function_name)        {          new_name = (char *) alloca (strlen (name) + CHKR_PREFIX_SIZE + 1);          strcpy (new_name, CHKR_PREFIX);          strcpy (new_name + CHKR_PREFIX_SIZE, name);          name = obstack_copy0 (saveable_obstack, new_name, strlen (new_name));        }    }  if (DECL_RTL (decl) == 0)    {      DECL_RTL (decl)	= gen_rtx_MEM (DECL_MODE (decl),		       gen_rtx_SYMBOL_REF (Pmode, name));      /* Optionally set flags or add text to the name to record information	 such as that it is a function name.  If the name is changed, the macro	 ASM_OUTPUT_LABELREF will have to know how to strip this information.  */#ifdef ENCODE_SECTION_INFO      ENCODE_SECTION_INFO (decl);#endif    }  else    {      /* ??? Another way to do this would be to do what halfpic.c does	 and maintain a hashed table of such critters.  */      /* ??? Another way to do this would be to pass a flag bit to	 ENCODE_SECTION_INFO saying whether this is a new decl or not.  */      /* Let the target reassign the RTL if it wants.	 This is necessary, for example, when one machine specific	 decl attribute overrides another.  */#ifdef REDO_SECTION_INFO_P      if (REDO_SECTION_INFO_P (decl))	ENCODE_SECTION_INFO (decl);#endif    }  /* Record at least one function has been defined.  */  function_defined = 1;}/* Given NAME, a putative register name, discard any customary prefixes.  */static const char *strip_reg_name (name)  const char *name;{#ifdef REGISTER_PREFIX  if (!strncmp (name, REGISTER_PREFIX, strlen (REGISTER_PREFIX)))    name += strlen (REGISTER_PREFIX);#endif  if (name[0] == '%' || name[0] == '#')    name++;  return name;}/* Decode an `asm' spec for a declaration as a register name.   Return the register number, or -1 if nothing specified,   or -2 if the ASMSPEC is not `cc' or `memory' and is not recognized,   or -3 if ASMSPEC is `cc' and is not recognized,   or -4 if ASMSPEC is `memory' and is not recognized.   Accept an exact spelling or a decimal number.   Prefixes such as % are optional.  */intdecode_reg_name (asmspec)  const char *asmspec;{  if (asmspec != 0)    {      int i;      /* Get rid of confusing prefixes.  */      asmspec = strip_reg_name (asmspec);	      /* Allow a decimal number as a "register name".  */      for (i = strlen (asmspec) - 1; i >= 0; i--)	if (! (asmspec[i] >= '0' && asmspec[i] <= '9'))	  break;      if (asmspec[0] != 0 && i < 0)	{	  i = atoi (asmspec);	  if (i < FIRST_PSEUDO_REGISTER && i >= 0)	    return i;	  else	    return -2;	}      for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)	if (reg_names[i][0]	    && ! strcmp (asmspec, strip_reg_name (reg_names[i])))	  return i;#ifdef ADDITIONAL_REGISTER_NAMES      {	static struct { const char *name; int number; } table[]	  = ADDITIONAL_REGISTER_NAMES;	for (i = 0; i < (int)(sizeof (table) / sizeof (table[0])); i++)	  if (! strcmp (asmspec, table[i].name))	    return table[i].number;      }#endif /* ADDITIONAL_REGISTER_NAMES */      if (!strcmp (asmspec, "memory"))	return -4;      if (!strcmp (asmspec, "cc"))	return -3;      return -2;    }  return -1;}/* Create the DECL_RTL for a declaration for a static or external variable   or static or external function.   ASMSPEC, if not 0, is the string which the user specified   as the assembler symbol name.   TOP_LEVEL is nonzero if this is a file-scope variable.   This is never called for PARM_DECL nodes.  */voidmake_decl_rtl (decl, asmspec, top_level)     tree decl;     const char *asmspec;     int top_level;{  register char *name = 0;  int reg_number;  reg_number = decode_reg_name (asmspec);  if (DECL_ASSEMBLER_NAME (decl) != NULL_TREE)    name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));  if (reg_number == -2)    {      /* ASMSPEC is given, and not the name of a register.  */      name = (char *) obstack_alloc (saveable_obstack,				     strlen (asmspec) + 2);      name[0] = '*';      strcpy (&name[1], asmspec);    }  /* For a duplicate declaration, we can be called twice on the     same DECL node.  Don't discard the RTL already made.  */  if (DECL_RTL (decl) == 0)    {      /* First detect errors in declaring global registers.  */      if (TREE_CODE (decl) != FUNCTION_DECL	  && DECL_REGISTER (decl) && reg_number == -1)	error_with_decl (decl,			 "register name not specified for `%s'");      else if (TREE_CODE (decl) != FUNCTION_DECL	       && DECL_REGISTER (decl) && reg_number < 0)	error_with_decl (decl,			 "invalid register name for `%s'");      else if ((reg_number >= 0 || reg_number == -3)	       && (TREE_CODE (decl) == FUNCTION_DECL		   && ! DECL_REGISTER (decl)))	error_with_decl (decl,			 "register name given for non-register variable `%s'");      else if (TREE_CODE (decl) != FUNCTION_DECL	       && DECL_REGISTER (decl)	       && TYPE_MODE (TREE_TYPE (decl)) == BLKmode)	error_with_decl (decl,			 "data type of `%s' isn't suitable for a register");      else if (TREE_CODE (decl) != FUNCTION_DECL && DECL_REGISTER (decl)	       && ! HARD_REGNO_MODE_OK (reg_number,					TYPE_MODE (TREE_TYPE (decl))))	error_with_decl (decl,			 "register number for `%s' isn't suitable for data type");      /* Now handle properly declared static register variables.  */      else if (TREE_CODE (decl) != FUNCTION_DECL && DECL_REGISTER (decl))	{	  int nregs;	  if (DECL_INITIAL (decl) != 0 && top_level)	    {	      DECL_INITIAL (decl) = 0;	      error ("global register variable has initial value");	    }	  if (fixed_regs[reg_number] == 0	      && function_defined && top_level)	    error ("global register variable follows a function definition");	  if (TREE_THIS_VOLATILE (decl))	    warning ("volatile register variables don't work as you might wish");	  /* If the user specified one of the eliminables registers here,	     e.g., FRAME_POINTER_REGNUM, we don't want to get this variable	     confused with that register and be eliminated.  Although this	     usage is somewhat suspect, we nevertheless use the following	     kludge to avoid setting DECL_RTL to frame_pointer_rtx.  */	  DECL_RTL (decl)	    = gen_rtx_REG (DECL_MODE (decl), FIRST_PSEUDO_REGISTER);	  REGNO (DECL_RTL (decl)) = reg_number;	  REG_USERVAR_P (DECL_RTL (decl)) = 1;	  if (top_level)	    {	      /* Make this register global, so not usable for anything		 else.  */	      nregs = HARD_REGNO_NREGS (reg_number, DECL_MODE (decl));	      while (nregs > 0)		globalize_reg (reg_number + --nregs);	    }	}      /* Specifying a section attribute on a variable forces it into a         non-.bss section, and thus it cannot be common. */      else if (TREE_CODE (decl) == VAR_DECL	       && DECL_SECTION_NAME (decl) != NULL_TREE	       && DECL_INITIAL (decl) == NULL_TREE	       && DECL_COMMON (decl))          DECL_COMMON (decl) = 0;      /* Now handle ordinary static variables and functions (in memory).	 Also handle vars declared register invalidly.  */      if (DECL_RTL (decl) == 0)	{	  /* Can't use just the variable's own name for a variable	     whose scope is less than the whole file.	     Concatenate a distinguishing number.  */	  if (!top_level && !TREE_PUBLIC (decl) && asmspec == 0)	    {	      char *label;	      ASM_FORMAT_PRIVATE_NAME (label, name, var_labelno);	      name = obstack_copy0 (saveable_obstack, label, strlen (label));	      var_labelno++;	    }	  if (name == 0)	    abort ();	  /* When -fprefix-function-name is used, the functions	     names are prefixed.  Only nested function names are not	     prefixed.  */	  if (flag_prefix_function_name && TREE_CODE (decl) == FUNCTION_DECL)	    {	      char *new_name;	      new_name = (char *) alloca (strlen (name) + CHKR_PREFIX_SIZE 	      				  + 1);	      strcpy (new_name, CHKR_PREFIX);	      strcpy (new_name + CHKR_PREFIX_SIZE, name);	      name = obstack_copy0 (saveable_obstack,	      			   new_name, strlen (new_name));	    }	  DECL_RTL (decl) = gen_rtx_MEM (DECL_MODE (decl),					 gen_rtx_SYMBOL_REF (Pmode, name));	  MEM_ALIAS_SET (DECL_RTL (decl)) = get_alias_set (decl);	    	  /* If this variable is to be treated as volatile, show its	     tree node has side effects.  If it has side effects, either	     because of this test or from TREE_THIS_VOLATILE also	     being set, show the MEM is volatile.  */	  if (flag_volatile_global && TREE_CODE (decl) == VAR_DECL	      && TREE_PUBLIC (decl))	    TREE_SIDE_EFFECTS (decl) = 1;	  else if (flag_volatile_static && TREE_CODE (decl) == VAR_DECL	       && (TREE_PUBLIC (decl) || TREE_STATIC (decl)))	    TREE_SIDE_EFFECTS (decl) = 1;	  if (TREE_SIDE_EFFECTS (decl))	    MEM_VOLATILE_P (DECL_RTL (decl)) = 1;	  if (TREE_READONLY (decl))	    RTX_UNCHANGING_P (DECL_RTL (decl)) = 1;	  MEM_SET_IN_STRUCT_P (DECL_RTL (decl),			       AGGREGATE_TYPE_P (TREE_TYPE (decl)));	  /* Optionally set flags or add text to the name to record information	     such as that it is a function name.	     If the name is changed, the macro ASM_OUTPUT_LABELREF	     will have to know how to strip this information.  */#ifdef ENCODE_SECTION_INFO	  ENCODE_SECTION_INFO (decl);#endif	}    }  else    {      /* If the old RTL had the wrong mode, fix the mode.  */      if (GET_MODE (DECL_RTL (decl)) != DECL_MODE (decl))	{	  rtx rtl = DECL_RTL (decl);	  PUT_MODE (rtl, DECL_MODE (decl));	}      /* ??? Another way to do this would be to do what halfpic.c does	 and maintain a hashed table of such critters.  */      /* ??? Another way to do this would be to pass a flag bit to	 ENCODE_SECTION_INFO saying whether this is a new decl or not.  */      /* Let the target reassign the RTL if it wants.	 This is necessary, for example, when one machine specific	 decl attribute overrides another.  */#ifdef REDO_SECTION_INFO_P      if (REDO_SECTION_INFO_P (decl))	ENCODE_SECTION_INFO (decl);#endif    }}/* Make the rtl for variable VAR be volatile.   Use this only for static variables.  */voidmake_var_volatile (var)     tree var;{  if (GET_CODE (DECL_RTL (var)) != MEM)    abort ();  MEM_VOLATILE_P (DECL_RTL (var)) = 1;}/* Output alignment directive to align for constant expression EXP.  */voidassemble_constant_align (exp)     tree exp;{  int align;  /* Align the location counter as required by EXP's data type.  */  align = TYPE_ALIGN (TREE_TYPE (exp));#ifdef CONSTANT_ALIGNMENT  align = CONSTANT_ALIGNMENT (exp, align);#endif  if (align > BITS_PER_UNIT)    ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (align / BITS_PER_UNIT));}/* Output a string of literal assembler code   for an `asm' keyword used between functions.  */voidassemble_asm (string)     tree string;{  app_enable ();  if (TREE_CODE (string) == ADDR_EXPR)    string = TREE_OPERAND (string, 0);  fprintf (asm_out_file, "\t%s\n", TREE_STRING_POINTER (string));}#if 0 /* This should no longer be needed, because	 flag_gnu_linker should be 0 on these systems,	 which should prevent any output	 if ASM_OUTPUT_CONSTRUCTOR and ASM_OUTPUT_DESTRUCTOR are absent.  */#if !(defined(DBX_DEBUGGING_INFO) && !defined(FASCIST_ASSEMBLER))#ifndef ASM_OUTPUT_CONSTRUCTOR#define ASM_OUTPUT_CONSTRUCTOR(file, name)#endif#ifndef ASM_OUTPUT_DESTRUCTOR#define ASM_OUTPUT_DESTRUCTOR(file, name)#endif#endif#endif /* 0 *//* Record an element in the table of global destructors.   How this is done depends on what sort of assembler and linker   are in use.   NAME should be the name of a global function to be called   at exit time.  This name is output using assemble_name.  */voidassemble_destructor (name)     char *name;{#ifdef ASM_OUTPUT_DESTRUCTOR  ASM_OUTPUT_DESTRUCTOR (asm_out_file, name);#else  if (flag_gnu_linker)    {      /* Now tell GNU LD that this is part of the static destructor set.  */      /* This code works for any machine provided you use GNU as/ld.  */      fprintf (asm_out_file, "%s \"___DTOR_LIST__\",22,0,0,", ASM_STABS_OP);      assemble_name (asm_out_file, name);      fputc ('\n', asm_out_file);    }#endif}/* Likewise for global constructors.  */voidassemble_constructor (name)     char *name;{#ifdef ASM_OUTPUT_CONSTRUCTOR  ASM_OUTPUT_CONSTRUCTOR (asm_out_file, name);#else  if (flag_gnu_linker)    {      /* Now tell GNU LD that this is part of the static constructor set.  */      /* This code works for any machine provided you use GNU as/ld.  */      fprintf (asm_out_file, "%s \"___CTOR_LIST__\",22,0,0,", ASM_STABS_OP);      assemble_name (asm_out_file, name);      fputc ('\n', asm_out_file);    }#endif}/* Likewise for entries we want to record for garbage collection.   Garbage collection is still under development.  */voidassemble_gc_entry (name)     char *name;{#ifdef ASM_OUTPUT_GC_ENTRY  ASM_OUTPUT_GC_ENTRY (asm_out_file, name);#else  if (flag_gnu_linker)    {      /* Now tell GNU LD that this is part of the static constructor set.  */      fprintf (asm_out_file, "%s \"___PTR_LIST__\",22,0,0,", ASM_STABS_OP);      assemble_name (asm_out_file, name);      fputc ('\n', asm_out_file);    }#endif}/* CONSTANT_POOL_BEFORE_FUNCTION may be defined as an expression with   a non-zero value if the constant pool should be output before the   start of the function, or a zero value if the pool should output   after the end of the function.  The default is to put it before the   start.  */#ifndef CONSTANT_POOL_BEFORE_FUNCTION#define CONSTANT_POOL_BEFORE_FUNCTION 1#endif/* Output assembler code for the constant pool of a function and associated   with defining the name of the function.  DECL describes the function.   NAME is the function's name.  For the constant pool, we use the current   constant pool data.  */voidassemble_start_function (decl, fnname)     tree decl;     char *fnname;{  int align;  /* The following code does not need preprocessing in the assembler.  */  app_disable ();  if (CONSTANT_POOL_BEFORE_FUNCTION)    output_constant_pool (fnname, decl);#ifdef ASM_OUTPUT_SECTION_NAME  /* If the function is to be put in its own section and it's not in a section     already, indicate so.  */  if ((flag_function_sections       && DECL_SECTION_NAME (decl) == NULL_TREE)      || UNIQUE_SECTION_P (decl))    UNIQUE_SECTION (decl, 0);#endif  function_section (decl);  /* Tell assembler to move to target machine's alignment for functions.  */  align = floor_log2 (FUNCTION_BOUNDARY / BITS_PER_UNIT);  if (align > 0)    ASM_OUTPUT_ALIGN (asm_out_file, align);#ifdef ASM_OUTPUT_FUNCTION_PREFIX  ASM_OUTPUT_FUNCTION_PREFIX (asm_out_file, fnname);#endif#ifdef SDB_DEBUGGING_INFO  /* Output SDB definition of the function.  */  if (write_symbols == SDB_DEBUG)    sdbout_mark_begin_function ();#endif#ifdef DBX_DEBUGGING_INFO  /* Output DBX definition of the function.  */  if (write_symbols == DBX_DEBUG)    dbxout_begin_function (decl);#endif  /* Make function name accessible from other files, if appropriate.  */  if (TREE_PUBLIC (decl))    {      if (! first_global_object_name)	{	  char *p;	  char **name;	  if (! DECL_WEAK (decl) && ! DECL_ONE_ONLY (decl))	    name = &first_global_object_name;	  else	    name = &weak_global_object_name;	  STRIP_NAME_ENCODING (p, fnname);	  *name = permalloc (strlen (p) + 1);	  strcpy (*name, p);	}#ifdef ASM_WEAKEN_LABEL      if (DECL_WEAK (decl))	ASM_WEAKEN_LABEL (asm_out_file, fnname);      else#endif      ASM_GLOBALIZE_LABEL (asm_out_file, fnname);    }  /* Do any machine/system dependent processing of the function name */#ifdef ASM_DECLARE_FUNCTION_NAME  ASM_DECLARE_FUNCTION_NAME (asm_out_file, fnname, current_function_decl);#else  /* Standard thing is just output label for the function.  */  ASM_OUTPUT_LABEL (asm_out_file, fnname);#endif /* ASM_DECLARE_FUNCTION_NAME */}/* Output assembler code associated with defining the size of the   function.  DECL describes the function.  NAME is the function's name.  */voidassemble_end_function (decl, fnname)     tree decl;     char *fnname;{#ifdef ASM_DECLARE_FUNCTION_SIZE  ASM_DECLARE_FUNCTION_SIZE (asm_out_file, fnname, decl);#endif  if (! CONSTANT_POOL_BEFORE_FUNCTION)    {      output_constant_pool (fnname, decl);      function_section (decl);	/* need to switch back */    }  /* Output any constants which should appear after the function.  */  output_after_function_constants ();}/* Assemble code to leave SIZE bytes of zeros.  */voidassemble_zeros (size)     int size;{  /* Do no output if -fsyntax-only.  */  if (flag_syntax_only)    return;#ifdef ASM_NO_SKIP_IN_TEXT  /* The `space' pseudo in the text section outputs nop insns rather than 0s,     so we must output 0s explicitly in the text section.  */  if (ASM_NO_SKIP_IN_TEXT && in_text_section ())    {      int i;      for (i = 0; i < size - 20; i += 20)	{#ifdef ASM_BYTE_OP	  fprintf (asm_out_file,		   "%s 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0\n", ASM_BYTE_OP);#else	  fprintf (asm_out_file,		   "\tbyte 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0\n");#endif	}      if (i < size)        {#ifdef ASM_BYTE_OP	  fprintf (asm_out_file, "%s 0", ASM_BYTE_OP);#else	  fprintf (asm_out_file, "\tbyte 0");#endif	  i++;	  for (; i < size; i++)	    fprintf (asm_out_file, ",0");	  fprintf (asm_out_file, "\n");	}    }  else#endif    if (size > 0)      ASM_OUTPUT_SKIP (asm_out_file, size);}/* Assemble an alignment pseudo op for an ALIGN-bit boundary.  */voidassemble_align (align)     int align;{  if (align > BITS_PER_UNIT)    ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (align / BITS_PER_UNIT));}/* Assemble a string constant with the specified C string as contents.  */voidassemble_string (p, size)     const char *p;     int size;{  int pos = 0;  int maximum = 2000;  /* If the string is very long, split it up.  */  while (pos < size)    {      int thissize = size - pos;      if (thissize > maximum)	thissize = maximum;      ASM_OUTPUT_ASCII (asm_out_file, p, thissize);      pos += thissize;      p += thissize;    }}/* Assemble everything that is needed for a variable or function declaration.   Not used for automatic variables, and not used for function definitions.   Should not be called for variables of incomplete structure type.   TOP_LEVEL is nonzero if this variable has file scope.   AT_END is nonzero if this is the special handling, at end of compilation,   to define things that have had only tentative definitions.   DONT_OUTPUT_DATA if nonzero means don't actually output the   initial value (that will be done by the caller).  */voidassemble_variable (decl, top_level, at_end, dont_output_data)     tree decl;     int top_level ATTRIBUTE_UNUSED;     int at_end;     int dont_output_data;{  register char *name;  unsigned int align;  tree size_tree;  int reloc = 0;  enum in_section saved_in_section;  last_assemble_variable_decl = 0;  if (GET_CODE (DECL_RTL (decl)) == REG)    {      /* Do output symbol info for global register variables, but do nothing	 else for them.  */      if (TREE_ASM_WRITTEN (decl))	return;      TREE_ASM_WRITTEN (decl) = 1;      /* Do no output if -fsyntax-only.  */      if (flag_syntax_only)	return;#if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)      /* File-scope global variables are output here.  */      if ((write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)	   && top_level)	dbxout_symbol (decl, 0);#endif#ifdef SDB_DEBUGGING_INFO      if (write_symbols == SDB_DEBUG && top_level	  /* Leave initialized global vars for end of compilation;	     see comment in compile_file.  */	  && (TREE_PUBLIC (decl) == 0 || DECL_INITIAL (decl) == 0))	sdbout_symbol (decl, 0);#endif      /* Don't output any DWARF debugging information for variables here.	 In the case of local variables, the information for them is output	 when we do our recursive traversal of the tree representation for	 the entire containing function.  In the case of file-scope variables,	 we output information for all of them at the very end of compilation	 while we are doing our final traversal of the chain of file-scope	 declarations.  */      return;    }  /* Normally no need to say anything here for external references,     since assemble_external is called by the language-specific code     when a declaration is first seen.  */  if (DECL_EXTERNAL (decl))    return;  /* Output no assembler code for a function declaration.     Only definitions of functions output anything.  */  if (TREE_CODE (decl) == FUNCTION_DECL)    return;  /* If type was incomplete when the variable was declared,     see if it is complete now.  */  if (DECL_SIZE (decl) == 0)    layout_decl (decl, 0);  /* Still incomplete => don't allocate it; treat the tentative defn     (which is what it must have been) as an `extern' reference.  */  if (!dont_output_data && DECL_SIZE (decl) == 0)    {      error_with_file_and_line (DECL_SOURCE_FILE (decl),				DECL_SOURCE_LINE (decl),				"storage size of `%s' isn't known",				IDENTIFIER_POINTER (DECL_NAME (decl)));      TREE_ASM_WRITTEN (decl) = 1;      return;    }  /* The first declaration of a variable that comes through this function     decides whether it is global (in C, has external linkage)     or local (in C, has internal linkage).  So do nothing more     if this function has already run.  */  if (TREE_ASM_WRITTEN (decl))    return;  TREE_ASM_WRITTEN (decl) = 1;  /* Do no output if -fsyntax-only.  */  if (flag_syntax_only)    return;  app_disable ();  if (! dont_output_data)    {      int size;      if (TREE_CODE (DECL_SIZE (decl)) != INTEGER_CST)	goto finish;      /* This is better than explicit arithmetic, since it avoids overflow.  */      size_tree = size_binop (CEIL_DIV_EXPR,			      DECL_SIZE (decl), size_int (BITS_PER_UNIT));      size = TREE_INT_CST_LOW (size_tree);      if (TREE_INT_CST_HIGH (size_tree) != 0	  || size != TREE_INT_CST_LOW (size_tree))	{	  error_with_decl (decl, "size of variable `%s' is too large");	  goto finish;	}    }  name = XSTR (XEXP (DECL_RTL (decl), 0), 0);  if (TREE_PUBLIC (decl) && DECL_NAME (decl)      && ! first_global_object_name      && ! (DECL_COMMON (decl) && (DECL_INITIAL (decl) == 0				   || DECL_INITIAL (decl) == error_mark_node))      && ! DECL_WEAK (decl)      && ! DECL_ONE_ONLY (decl))    {      char *p;      STRIP_NAME_ENCODING (p, name);      first_global_object_name = permalloc (strlen (p) + 1);      strcpy (first_global_object_name, p);    }  /* Compute the alignment of this data.  */  align = DECL_ALIGN (decl);  /* In the case for initialing an array whose length isn't specified,     where we have not yet been able to do the layout,     figure out the proper alignment now.  */  if (dont_output_data && DECL_SIZE (decl) == 0      && TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE)    align = MAX (align, TYPE_ALIGN (TREE_TYPE (TREE_TYPE (decl))));  /* Some object file formats have a maximum alignment which they support.     In particular, a.out format supports a maximum alignment of 4.  */#ifndef MAX_OFILE_ALIGNMENT#define MAX_OFILE_ALIGNMENT BIGGEST_ALIGNMENT#endif  if (align > MAX_OFILE_ALIGNMENT)    {      warning_with_decl (decl,	"alignment of `%s' is greater than maximum object file alignment. Using %d.",                    MAX_OFILE_ALIGNMENT/BITS_PER_UNIT);      align = MAX_OFILE_ALIGNMENT;    }  /* On some machines, it is good to increase alignment sometimes.  */#ifdef DATA_ALIGNMENT  align = DATA_ALIGNMENT (TREE_TYPE (decl), align);#endif#ifdef CONSTANT_ALIGNMENT  if (DECL_INITIAL (decl) != 0 && DECL_INITIAL (decl) != error_mark_node)    align = CONSTANT_ALIGNMENT (DECL_INITIAL (decl), align);#endif  /* Reset the alignment in case we have made it tighter, so we can benefit     from it in get_pointer_alignment.  */  DECL_ALIGN (decl) = align;  /* Handle uninitialized definitions.  */  if ((DECL_INITIAL (decl) == 0 || DECL_INITIAL (decl) == error_mark_node)      /* If the target can't output uninitialized but not common global data	 in .bss, then we have to use .data.  */#if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)      && DECL_COMMON (decl)#endif      && DECL_SECTION_NAME (decl) == 0      && ! dont_output_data)    {      int size = TREE_INT_CST_LOW (size_tree);      int rounded = size;      /* Don't allocate zero bytes of common,	 since that means "undefined external" in the linker.  */      if (size == 0) rounded = 1;      /* Round size up to multiple of BIGGEST_ALIGNMENT bits	 so that each uninitialized object starts on such a boundary.  */      rounded += (BIGGEST_ALIGNMENT / BITS_PER_UNIT) - 1;      rounded = (rounded / (BIGGEST_ALIGNMENT / BITS_PER_UNIT)		 * (BIGGEST_ALIGNMENT / BITS_PER_UNIT));      #if !defined(ASM_OUTPUT_ALIGNED_COMMON) && !defined(ASM_OUTPUT_ALIGNED_BSS)      if ( (DECL_ALIGN (decl) / BITS_PER_UNIT) > rounded)         warning_with_decl            (decl, "requested alignment for %s is greater than implemented alignment of %d.",rounded);#endif       #ifdef DBX_DEBUGGING_INFO      /* File-scope global variables are output here.  */      if (write_symbols == DBX_DEBUG && top_level)	dbxout_symbol (decl, 0);#endif#ifdef SDB_DEBUGGING_INFO      if (write_symbols == SDB_DEBUG && top_level	  /* Leave initialized global vars for end of compilation;	     see comment in compile_file.  */	  && (TREE_PUBLIC (decl) == 0 || DECL_INITIAL (decl) == 0))	sdbout_symbol (decl, 0);#endif      /* Don't output any DWARF debugging information for variables here.	 In the case of local variables, the information for them is output	 when we do our recursive traversal of the tree representation for	 the entire containing function.  In the case of file-scope variables,	 we output information for all of them at the very end of compilation	 while we are doing our final traversal of the chain of file-scope	 declarations.  */#if 0 /* ??? We should either delete this or add a comment describing what	 it was intended to do and why we shouldn't delete it.  */      if (flag_shared_data)	data_section ();#endif      if (TREE_PUBLIC (decl)#if defined (ASM_OUTPUT_BSS) || defined (ASM_OUTPUT_ALIGNED_BSS)	  && DECL_COMMON (decl)#endif	  )	{#ifdef ASM_OUTPUT_SHARED_COMMON	  if (flag_shared_data)	    ASM_OUTPUT_SHARED_COMMON (asm_out_file, name, size, rounded);	  else#endif	      {#ifdef ASM_OUTPUT_ALIGNED_DECL_COMMON		ASM_OUTPUT_ALIGNED_DECL_COMMON (asm_out_file, decl, name, size,						   DECL_ALIGN (decl));#else#ifdef ASM_OUTPUT_ALIGNED_COMMON		ASM_OUTPUT_ALIGNED_COMMON (asm_out_file, name, size,					   DECL_ALIGN (decl));#else		ASM_OUTPUT_COMMON (asm_out_file, name, size, rounded);#endif#endif	      }	}#if defined (ASM_OUTPUT_BSS) || defined (ASM_OUTPUT_ALIGNED_BSS)      else if (TREE_PUBLIC (decl))	{#ifdef ASM_OUTPUT_SHARED_BSS	  if (flag_shared_data)	    ASM_OUTPUT_SHARED_BSS (asm_out_file, decl, name, size, rounded);	  else#endif	      {#ifdef ASM_OUTPUT_ALIGNED_BSS		ASM_OUTPUT_ALIGNED_BSS (asm_out_file, decl, name, size,					DECL_ALIGN (decl));#else		ASM_OUTPUT_BSS (asm_out_file, decl, name, size, rounded);#endif	      }	}#endif /* ASM_OUTPUT_BSS || ASM_OUTPUT_ALIGNED_BSS */      else	{#ifdef ASM_OUTPUT_SHARED_LOCAL	  if (flag_shared_data)	    ASM_OUTPUT_SHARED_LOCAL (asm_out_file, name, size, rounded);	  else#endif	      {#ifdef ASM_OUTPUT_ALIGNED_DECL_LOCAL		ASM_OUTPUT_ALIGNED_DECL_LOCAL (asm_out_file, decl, name, size,						  DECL_ALIGN (decl));#else#ifdef ASM_OUTPUT_ALIGNED_LOCAL		ASM_OUTPUT_ALIGNED_LOCAL (asm_out_file, name, size,					  DECL_ALIGN (decl));#else		ASM_OUTPUT_LOCAL (asm_out_file, name, size, rounded);#endif#endif	      }	}      goto finish;    }  /* Handle initialized definitions.     Also handle uninitialized global definitions if -fno-common and the     target doesn't support ASM_OUTPUT_BSS.  */  /* First make the assembler name(s) global if appropriate.  */  if (TREE_PUBLIC (decl) && DECL_NAME (decl))    {#ifdef ASM_WEAKEN_LABEL      if (DECL_WEAK (decl))	ASM_WEAKEN_LABEL (asm_out_file, name);      else#endif      ASM_GLOBALIZE_LABEL (asm_out_file, name);    }#if 0  for (d = equivalents; d; d = TREE_CHAIN (d))    {      tree e = TREE_VALUE (d);      if (TREE_PUBLIC (e) && DECL_NAME (e))	ASM_GLOBALIZE_LABEL (asm_out_file,			     XSTR (XEXP (DECL_RTL (e), 0), 0));    }#endif  /* Output any data that we will need to use the address of.  */  if (DECL_INITIAL (decl) == error_mark_node)    reloc = contains_pointers_p (TREE_TYPE (decl));  else if (DECL_INITIAL (decl))    reloc = output_addressed_constants (DECL_INITIAL (decl));#ifdef ASM_OUTPUT_SECTION_NAME  if ((flag_data_sections != 0       && DECL_SECTION_NAME (decl) == NULL_TREE)      || UNIQUE_SECTION_P (decl))    UNIQUE_SECTION (decl, reloc);#endif  /* Switch to the appropriate section.  */  variable_section (decl, reloc);  /* dbxout.c needs to know this.  */  if (in_text_section ())    DECL_IN_TEXT_SECTION (decl) = 1;  /* Record current section so we can restore it if dbxout.c clobbers it.  */  saved_in_section = in_section;  /* Output the dbx info now that we have chosen the section.  */#ifdef DBX_DEBUGGING_INFO  /* File-scope global variables are output here.  */  if (write_symbols == DBX_DEBUG && top_level)    dbxout_symbol (decl, 0);#endif#ifdef SDB_DEBUGGING_INFO  if (write_symbols == SDB_DEBUG && top_level      /* Leave initialized global vars for end of compilation;	 see comment in compile_file.  */      && (TREE_PUBLIC (decl) == 0 || DECL_INITIAL (decl) == 0))    sdbout_symbol (decl, 0);#endif  /* Don't output any DWARF debugging information for variables here.     In the case of local variables, the information for them is output     when we do our recursive traversal of the tree representation for     the entire containing function.  In the case of file-scope variables,     we output information for all of them at the very end of compilation     while we are doing our final traversal of the chain of file-scope     declarations.  */  /* If the debugging output changed sections, reselect the section     that's supposed to be selected.  */  if (in_section != saved_in_section)    variable_section (decl, reloc);  /* Output the alignment of this data.  */  if (align > BITS_PER_UNIT)    ASM_OUTPUT_ALIGN (asm_out_file,		      floor_log2 (DECL_ALIGN (decl) / BITS_PER_UNIT));  /* Do any machine/system dependent processing of the object.  */#ifdef ASM_DECLARE_OBJECT_NAME  last_assemble_variable_decl = decl;  ASM_DECLARE_OBJECT_NAME (asm_out_file, name, decl);#else  /* Standard thing is just output label for the object.  */  ASM_OUTPUT_LABEL (asm_out_file, name);#endif /* ASM_DECLARE_OBJECT_NAME */  if (!dont_output_data)    {      if (DECL_INITIAL (decl))	/* Output the actual data.  */	output_constant (DECL_INITIAL (decl), TREE_INT_CST_LOW (size_tree));      else	/* Leave space for it.  */	assemble_zeros (TREE_INT_CST_LOW (size_tree));    } finish:#ifdef XCOFF_DEBUGGING_INFO  /* Unfortunately, the IBM assembler cannot handle stabx before the actual     declaration.  When something like ".stabx  "aa:S-2",aa,133,0" is emitted      and `aa' hasn't been output yet, the assembler generates a stab entry with     a value of zero, in addition to creating an unnecessary external entry     for `aa'.  Hence, we must postpone dbxout_symbol to here at the end.  */  /* File-scope global variables are output here.  */  if (write_symbols == XCOFF_DEBUG && top_level)    {      saved_in_section = in_section;      dbxout_symbol (decl, 0);      if (in_section != saved_in_section)	variable_section (decl, reloc);    }#else  /* There must be a statement after a label.  */  ;#endif}/* Return 1 if type TYPE contains any pointers.  */static intcontains_pointers_p (type)     tree type;{  switch (TREE_CODE (type))    {    case POINTER_TYPE:    case REFERENCE_TYPE:      /* I'm not sure whether OFFSET_TYPE needs this treatment,	 so I'll play safe and return 1.  */    case OFFSET_TYPE:      return 1;    case RECORD_TYPE:    case UNION_TYPE:    case QUAL_UNION_TYPE:      {	tree fields;	/* For a type that has fields, see if the fields have pointers.  */	for (fields = TYPE_FIELDS (type); fields; fields = TREE_CHAIN (fields))	  if (TREE_CODE (fields) == FIELD_DECL	      && contains_pointers_p (TREE_TYPE (fields)))	    return 1;	return 0;      }    case ARRAY_TYPE:      /* An array type contains pointers if its element type does.  */      return contains_pointers_p (TREE_TYPE (type));    default:      return 0;    }}/* Output something to declare an external symbol to the assembler.   (Most assemblers don't need this, so we normally output nothing.)   Do nothing if DECL is not external.  */voidassemble_external (decl)     tree decl ATTRIBUTE_UNUSED;{#ifdef ASM_OUTPUT_EXTERNAL  if (TREE_CODE_CLASS (TREE_CODE (decl)) == 'd'      && DECL_EXTERNAL (decl) && TREE_PUBLIC (decl))    {      rtx rtl = DECL_RTL (decl);      if (GET_CODE (rtl) == MEM && GET_CODE (XEXP (rtl, 0)) == SYMBOL_REF	  && ! SYMBOL_REF_USED (XEXP (rtl, 0)))	{	  /* Some systems do require some output.  */	  SYMBOL_REF_USED (XEXP (rtl, 0)) = 1;	  ASM_OUTPUT_EXTERNAL (asm_out_file, decl, XSTR (XEXP (rtl, 0), 0));	}    }#endif}/* Similar, for calling a library function FUN.  */voidassemble_external_libcall (fun)     rtx fun ATTRIBUTE_UNUSED;{#ifdef ASM_OUTPUT_EXTERNAL_LIBCALL  /* Declare library function name external when first used, if nec.  */  if (! SYMBOL_REF_USED (fun))    {      SYMBOL_REF_USED (fun) = 1;      ASM_OUTPUT_EXTERNAL_LIBCALL (asm_out_file, fun);    }#endif}/* Declare the label NAME global.  */voidassemble_global (name)     char *name;{  ASM_GLOBALIZE_LABEL (asm_out_file, name);}/* Assemble a label named NAME.  */voidassemble_label (name)     char *name;{  ASM_OUTPUT_LABEL (asm_out_file, name);}/* Output to FILE a reference to the assembler name of a C-level name NAME.   If NAME starts with a *, the rest of NAME is output verbatim.   Otherwise NAME is transformed in an implementation-defined way   (usually by the addition of an underscore).   Many macros in the tm file are defined to call this function.  */voidassemble_name (file, name)     FILE *file;     char *name;{  char *real_name;  tree id;  STRIP_NAME_ENCODING (real_name, name);  if (flag_prefix_function_name       && ! bcmp (real_name, CHKR_PREFIX, CHKR_PREFIX_SIZE))    real_name = real_name + CHKR_PREFIX_SIZE;  id = maybe_get_identifier (real_name);  if (id)    TREE_SYMBOL_REFERENCED (id) = 1;  if (name[0] == '*')    fputs (&name[1], file);  else    ASM_OUTPUT_LABELREF (file, name);}/* Allocate SIZE bytes writable static space with a gensym name   and return an RTX to refer to its address.  */rtxassemble_static_space (size)     int size;{  char name[12];  char *namestring;  rtx x;#if 0  if (flag_shared_data)    data_section ();#endif  ASM_GENERATE_INTERNAL_LABEL (name, "LF", const_labelno);  ++const_labelno;  namestring = (char *) obstack_alloc (saveable_obstack,				       strlen (name) + 2);  strcpy (namestring, name);  x = gen_rtx_SYMBOL_REF (Pmode, namestring);#ifdef ASM_OUTPUT_ALIGNED_DECL_LOCAL  ASM_OUTPUT_ALIGNED_DECL_LOCAL (asm_out_file, NULL_TREE, name, size,				 BIGGEST_ALIGNMENT);#else#ifdef ASM_OUTPUT_ALIGNED_LOCAL  ASM_OUTPUT_ALIGNED_LOCAL (asm_out_file, name, size, BIGGEST_ALIGNMENT);#else  {    /* Round size up to multiple of BIGGEST_ALIGNMENT bits       so that each uninitialized object starts on such a boundary.  */    /* Variable `rounded' might or might not be used in ASM_OUTPUT_LOCAL. */    int rounded ATTRIBUTE_UNUSED      = ((size + (BIGGEST_ALIGNMENT / BITS_PER_UNIT) - 1)	 / (BIGGEST_ALIGNMENT / BITS_PER_UNIT)	 * (BIGGEST_ALIGNMENT / BITS_PER_UNIT));    ASM_OUTPUT_LOCAL (asm_out_file, name, size, rounded);  }#endif#endif  return x;}/* Assemble the static constant template for function entry trampolines.   This is done at most once per compilation.   Returns an RTX for the address of the template.  */#ifdef TRAMPOLINE_TEMPLATErtxassemble_trampoline_template (){  char label[256];  char *name;  int align;  /* By default, put trampoline templates in read-only data section.  */#ifdef TRAMPOLINE_SECTION  TRAMPOLINE_SECTION ();#else  readonly_data_section ();#endif  /* Write the assembler code to define one.  */  align = floor_log2 (TRAMPOLINE_ALIGNMENT / BITS_PER_UNIT);  if (align > 0)    ASM_OUTPUT_ALIGN (asm_out_file, align);  ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, "LTRAMP", 0);  TRAMPOLINE_TEMPLATE (asm_out_file);  /* Record the rtl to refer to it.  */  ASM_GENERATE_INTERNAL_LABEL (label, "LTRAMP", 0);  name    = (char *) obstack_copy0 (&permanent_obstack, label, strlen (label));  return gen_rtx_SYMBOL_REF (Pmode, name);}#endif/* Assemble the integer constant X into an object of SIZE bytes.   X must be either a CONST_INT or CONST_DOUBLE.   Return 1 if we were able to output the constant, otherwise 0.  If FORCE is   non-zero, abort if we can't output the constant.  */intassemble_integer (x, size, force)     rtx x;     int size;     int force;{  /* First try to use the standard 1, 2, 4, 8, and 16 byte     ASM_OUTPUT... macros.  */  switch (size)    {#ifdef ASM_OUTPUT_CHAR    case 1:      ASM_OUTPUT_CHAR (asm_out_file, x);      return 1;#endif#ifdef ASM_OUTPUT_SHORT    case 2:      ASM_OUTPUT_SHORT (asm_out_file, x);      return 1;#endif#ifdef ASM_OUTPUT_INT    case 4:      ASM_OUTPUT_INT (asm_out_file, x);      return 1;#endif#ifdef ASM_OUTPUT_DOUBLE_INT    case 8:      ASM_OUTPUT_DOUBLE_INT (asm_out_file, x);      return 1;#endif#ifdef ASM_OUTPUT_QUADRUPLE_INT    case 16:      ASM_OUTPUT_QUADRUPLE_INT (asm_out_file, x);      return 1;#endif    }  /* If we couldn't do it that way, there are two other possibilities: First,     if the machine can output an explicit byte and this is a 1 byte constant,     we can use ASM_OUTPUT_BYTE.  */#ifdef ASM_OUTPUT_BYTE  if (size == 1 && GET_CODE (x) == CONST_INT)    {      ASM_OUTPUT_BYTE (asm_out_file, INTVAL (x));      return 1;    }#endif  /* Finally, if SIZE is larger than a single word, try to output the constant     one word at a time.  */  if (size > UNITS_PER_WORD)    {      int i;      enum machine_mode mode	= mode_for_size (size * BITS_PER_UNIT, MODE_INT, 0);      rtx word;      for (i = 0; i < size / UNITS_PER_WORD; i++)	{	  word = operand_subword (x, i, 0, mode);	  if (word == 0)	    break;	  if (! assemble_integer (word, UNITS_PER_WORD, 0))	    break;	}      if (i == size / UNITS_PER_WORD)	return 1;      /* If we output at least one word and then could not finish,	 there is no valid way to continue.  */      if (i > 0)	abort ();    }  if (force)    abort ();  return 0;}/* Assemble the floating-point constant D into an object of size MODE.  */voidassemble_real (d, mode)     REAL_VALUE_TYPE d;     enum machine_mode mode;{  jmp_buf output_constant_handler;  if (setjmp (output_constant_handler))    {      error ("floating point trap outputting a constant");#ifdef REAL_IS_NOT_DOUBLE      bzero ((char *) &d, sizeof d);      d = dconst0;#else      d = 0;#endif    }  set_float_handler (output_constant_handler);  switch (mode)    {#ifdef ASM_OUTPUT_BYTE_FLOAT    case QFmode:      ASM_OUTPUT_BYTE_FLOAT (asm_out_file, d);      break;#endif#ifdef ASM_OUTPUT_SHORT_FLOAT    case HFmode:      ASM_OUTPUT_SHORT_FLOAT (asm_out_file, d);      break;#endif#ifdef ASM_OUTPUT_THREE_QUARTER_FLOAT    case TQFmode:      ASM_OUTPUT_THREE_QUARTER_FLOAT (asm_out_file, d);      break;#endif#ifdef ASM_OUTPUT_FLOAT    case SFmode:      ASM_OUTPUT_FLOAT (asm_out_file, d);      break;#endif#ifdef ASM_OUTPUT_DOUBLE    case DFmode:      ASM_OUTPUT_DOUBLE (asm_out_file, d);      break;#endif#ifdef ASM_OUTPUT_LONG_DOUBLE    case XFmode:    case TFmode:      ASM_OUTPUT_LONG_DOUBLE (asm_out_file, d);      break;#endif    default:      abort ();    }  set_float_handler (NULL_PTR);}/* Here we combine duplicate floating constants to make   CONST_DOUBLE rtx's, and force those out to memory when necessary.  *//* Chain of all CONST_DOUBLE rtx's constructed for the current function.   They are chained through the CONST_DOUBLE_CHAIN.   A CONST_DOUBLE rtx has CONST_DOUBLE_MEM != cc0_rtx iff it is on this chain.   In that case, CONST_DOUBLE_MEM is either a MEM,   or const0_rtx if no MEM has been made for this CONST_DOUBLE yet.   (CONST_DOUBLE_MEM is used only for top-level functions.   See force_const_mem for explanation.)  */static rtx const_double_chain;/* Return a CONST_DOUBLE or CONST_INT for a value specified as a pair of ints.   For an integer, I0 is the low-order word and I1 is the high-order word.   For a real number, I0 is the word with the low address   and I1 is the word with the high address.  */rtximmed_double_const (i0, i1, mode)     HOST_WIDE_INT i0, i1;     enum machine_mode mode;{  register rtx r;  if (GET_MODE_CLASS (mode) == MODE_INT      || GET_MODE_CLASS (mode) == MODE_PARTIAL_INT)    {      /* We clear out all bits that don't belong in MODE, unless they and our	 sign bit are all one.  So we get either a reasonable negative value	 or a reasonable unsigned value for this mode.  */      int width = GET_MODE_BITSIZE (mode);      if (width < HOST_BITS_PER_WIDE_INT	  && ((i0 & ((HOST_WIDE_INT) (-1) << (width - 1)))	      != ((HOST_WIDE_INT) (-1) << (width - 1))))	i0 &= ((HOST_WIDE_INT) 1 << width) - 1, i1 = 0;      else if (width == HOST_BITS_PER_WIDE_INT	       && ! (i1 == ~0 && i0 < 0))	i1 = 0;      else if (width > 2 * HOST_BITS_PER_WIDE_INT)	/* We cannot represent this value as a constant.  */	abort ();      /* If this would be an entire word for the target, but is not for	 the host, then sign-extend on the host so that the number will look	 the same way on the host that it would on the target.	 For example, when building a 64 bit alpha hosted 32 bit sparc	 targeted compiler, then we want the 32 bit unsigned value -1 to be	 represented as a 64 bit value -1, and not as 0x00000000ffffffff.	 The later confuses the sparc backend.  */      if (BITS_PER_WORD < HOST_BITS_PER_WIDE_INT && BITS_PER_WORD == width	  && (i0 & ((HOST_WIDE_INT) 1 << (width - 1))))	i0 |= ((HOST_WIDE_INT) (-1) << width);      /* If MODE fits within HOST_BITS_PER_WIDE_INT, always use a CONST_INT.	 ??? Strictly speaking, this is wrong if we create a CONST_INT	 for a large unsigned constant with the size of MODE being	 HOST_BITS_PER_WIDE_INT and later try to interpret that constant in a	 wider mode.  In that case we will mis-interpret it as a negative	 number.	 Unfortunately, the only alternative is to make a CONST_DOUBLE	 for any constant in any mode if it is an unsigned constant larger	 than the maximum signed integer in an int on the host.  However,	 doing this will break everyone that always expects to see a CONST_INT	 for SImode and smaller.	 We have always been making CONST_INTs in this case, so nothing new	 is being broken.  */      if (width <= HOST_BITS_PER_WIDE_INT)	i1 = (i0 < 0) ? ~(HOST_WIDE_INT) 0 : 0;      /* If this integer fits in one word, return a CONST_INT.  */      if ((i1 == 0 && i0 >= 0)	  || (i1 == ~0 && i0 < 0))	return GEN_INT (i0);      /* We use VOIDmode for integers.  */      mode = VOIDmode;    }  /* Search the chain for an existing CONST_DOUBLE with the right value.     If one is found, return it.  */  for (r = const_double_chain; r; r = CONST_DOUBLE_CHAIN (r))    if (CONST_DOUBLE_LOW (r) == i0 && CONST_DOUBLE_HIGH (r) == i1	&& GET_MODE (r) == mode)      return r;  /* No; make a new one and add it to the chain.     We may be called by an optimizer which may be discarding any memory     allocated during its processing (such as combine and loop).  However,     we will be leaving this constant on the chain, so we cannot tolerate     freed memory.  So switch to saveable_obstack for this allocation     and then switch back if we were in current_obstack.  */  push_obstacks_nochange ();  rtl_in_saveable_obstack ();  r = gen_rtx_CONST_DOUBLE (mode, NULL_RTX, i0, i1);  pop_obstacks ();  /* Don't touch const_double_chain in nested function; see force_const_mem.     Also, don't touch it if not inside any function.  */  if (outer_function_chain == 0 && current_function_decl != 0)    {      CONST_DOUBLE_CHAIN (r) = const_double_chain;      const_double_chain = r;    }  /* Store const0_rtx in mem-slot since this CONST_DOUBLE is on the chain.     Actual use of mem-slot is only through force_const_mem.  */  CONST_DOUBLE_MEM (r) = const0_rtx;  return r;}/* Return a CONST_DOUBLE for a specified `double' value   and machine mode.  */rtximmed_real_const_1 (d, mode)     REAL_VALUE_TYPE d;     enum machine_mode mode;{  union real_extract u;  register rtx r;  /* Get the desired `double' value as a sequence of ints     since that is how they are stored in a CONST_DOUBLE.  */  u.d = d;  /* Detect special cases.  */  if (REAL_VALUES_IDENTICAL (dconst0, d))    return CONST0_RTX (mode);  /* Check for NaN first, because some ports (specifically the i386) do not     emit correct ieee-fp code by default, and thus will generate a core     dump here if we pass a NaN to REAL_VALUES_EQUAL and if REAL_VALUES_EQUAL     does a floating point comparison.  */  else if (! REAL_VALUE_ISNAN (d) && REAL_VALUES_EQUAL (dconst1, d))    return CONST1_RTX (mode);  if (sizeof u == sizeof (HOST_WIDE_INT))    return immed_double_const (u.i[0], 0, mode);  if (sizeof u == 2 * sizeof (HOST_WIDE_INT))    return immed_double_const (u.i[0], u.i[1], mode);  /* The rest of this function handles the case where     a float value requires more than 2 ints of space.     It will be deleted as dead code on machines that don't need it.  */  /* Search the chain for an existing CONST_DOUBLE with the right value.     If one is found, return it.  */  for (r = const_double_chain; r; r = CONST_DOUBLE_CHAIN (r))    if (! bcmp ((char *) &CONST_DOUBLE_LOW (r), (char *) &u, sizeof u)	&& GET_MODE (r) == mode)      return r;  /* No; make a new one and add it to the chain.     We may be called by an optimizer which may be discarding any memory     allocated during its processing (such as combine and loop).  However,     we will be leaving this constant on the chain, so we cannot tolerate     freed memory.  So switch to saveable_obstack for this allocation     and then switch back if we were in current_obstack.  */  push_obstacks_nochange ();  rtl_in_saveable_obstack ();  r = rtx_alloc (CONST_DOUBLE);  PUT_MODE (r, mode);  bcopy ((char *) &u, (char *) &CONST_DOUBLE_LOW (r), sizeof u);  pop_obstacks ();  /* Don't touch const_double_chain in nested function; see force_const_mem.     Also, don't touch it if not inside any function.  */  if (outer_function_chain == 0 && current_function_decl != 0)    {      CONST_DOUBLE_CHAIN (r) = const_double_chain;      const_double_chain = r;    }  /* Store const0_rtx in CONST_DOUBLE_MEM since this CONST_DOUBLE is on the     chain, but has not been allocated memory.  Actual use of CONST_DOUBLE_MEM     is only through force_const_mem.  */  CONST_DOUBLE_MEM (r) = const0_rtx;  return r;}/* Return a CONST_DOUBLE rtx for a value specified by EXP,   which must be a REAL_CST tree node.  */rtximmed_real_const (exp)     tree exp;{  return immed_real_const_1 (TREE_REAL_CST (exp), TYPE_MODE (TREE_TYPE (exp)));}/* At the end of a function, forget the memory-constants   previously made for CONST_DOUBLEs.  Mark them as not on real_constant_chain.   Also clear out real_constant_chain and clear out all the chain-pointers.  */voidclear_const_double_mem (){  register rtx r, next;  /* Don't touch CONST_DOUBLE_MEM for nested functions.     See force_const_mem for explanation.  */  if (outer_function_chain != 0)    return;  for (r = const_double_chain; r; r = next)    {      next = CONST_DOUBLE_CHAIN (r);      CONST_DOUBLE_CHAIN (r) = 0;      CONST_DOUBLE_MEM (r) = cc0_rtx;    }  const_double_chain = 0;}/* Given an expression EXP with a constant value,   reduce it to the sum of an assembler symbol and an integer.   Store them both in the structure *VALUE.   Abort if EXP does not reduce.  */struct addr_const{  rtx base;  HOST_WIDE_INT offset;};static voiddecode_addr_const (exp, value)     tree exp;     struct addr_const *value;{  register tree target = TREE_OPERAND (exp, 0);  register int offset = 0;  register rtx x;  while (1)    {      if (TREE_CODE (target) == COMPONENT_REF	  && (TREE_CODE (DECL_FIELD_BITPOS (TREE_OPERAND (target, 1)))	      == INTEGER_CST))	{	  offset += TREE_INT_CST_LOW (DECL_FIELD_BITPOS (TREE_OPERAND (target, 1))) / BITS_PER_UNIT;	  target = TREE_OPERAND (target, 0);	}      else if (TREE_CODE (target) == ARRAY_REF)	{	  if (TREE_CODE (TREE_OPERAND (target, 1)) != INTEGER_CST	      || TREE_CODE (TYPE_SIZE (TREE_TYPE (target))) != INTEGER_CST)	    abort ();	  offset += ((TREE_INT_CST_LOW (TYPE_SIZE (TREE_TYPE (target)))		      * TREE_INT_CST_LOW (TREE_OPERAND (target, 1)))		     / BITS_PER_UNIT);	  target = TREE_OPERAND (target, 0);	}      else	break;    }  switch (TREE_CODE (target))    {    case VAR_DECL:    case FUNCTION_DECL:      x = DECL_RTL (target);      break;    case LABEL_DECL:      x = gen_rtx_MEM (FUNCTION_MODE,		       gen_rtx_LABEL_REF (VOIDmode,					  label_rtx (TREE_OPERAND (exp, 0))));      break;    case REAL_CST:    case STRING_CST:    case COMPLEX_CST:    case CONSTRUCTOR:    case INTEGER_CST:      x = TREE_CST_RTL (target);      break;    default:      abort ();    }  if (GET_CODE (x) != MEM)    abort ();  x = XEXP (x, 0);  value->base = x;  value->offset = offset;}/* Uniquize all constants that appear in memory.   Each constant in memory thus far output is recorded   in `const_hash_table' with a `struct constant_descriptor'   that contains a polish representation of the value of   the constant.   We cannot store the trees in the hash table   because the trees may be temporary.  */struct constant_descriptor{  struct constant_descriptor *next;  char *label;  char contents[1];};#define HASHBITS 30#define MAX_HASH_TABLE 1009static struct constant_descriptor *const_hash_table[MAX_HASH_TABLE];/* Compute a hash code for a constant expression.  */static intconst_hash (exp)     tree exp;{  register char *p;  register int len, hi, i;  register enum tree_code code = TREE_CODE (exp);  /* Either set P and LEN to the address and len of something to hash and     exit the switch or return a value.  */  switch (code)    {    case INTEGER_CST:      p = (char *) &TREE_INT_CST_LOW (exp);      len = 2 * sizeof TREE_INT_CST_LOW (exp);      break;    case REAL_CST:      p = (char *) &TREE_REAL_CST (exp);      len = sizeof TREE_REAL_CST (exp);      break;    case STRING_CST:      p = TREE_STRING_POINTER (exp);      len = TREE_STRING_LENGTH (exp);      break;    case COMPLEX_CST:      return (const_hash (TREE_REALPART (exp)) * 5	      + const_hash (TREE_IMAGPART (exp)));    case CONSTRUCTOR:      if (TREE_CODE (TREE_TYPE (exp)) == SET_TYPE)	{	  len = int_size_in_bytes (TREE_TYPE (exp));	  p = (char *) alloca (len);	  get_set_constructor_bytes (exp, (unsigned char *) p, len);	  break;	}      else	{	  register tree link;	  /* For record type, include the type in the hashing.	     We do not do so for array types	     because (1) the sizes of the elements are sufficient	     and (2) distinct array types can have the same constructor.	     Instead, we include the array size because the constructor could	     be shorter.  */	  if (TREE_CODE (TREE_TYPE (exp)) == RECORD_TYPE)	    hi = ((unsigned long) TREE_TYPE (exp) & ((1 << HASHBITS) - 1))	      % MAX_HASH_TABLE;	  else	    hi = ((5 + int_size_in_bytes (TREE_TYPE (exp)))		  & ((1 << HASHBITS) - 1)) % MAX_HASH_TABLE;	  for (link = CONSTRUCTOR_ELTS (exp); link; link = TREE_CHAIN (link))	    if (TREE_VALUE (link))	      hi		= (hi * 603 + const_hash (TREE_VALUE (link))) % MAX_HASH_TABLE;	  return hi;	}    case ADDR_EXPR:      {	struct addr_const value;	decode_addr_const (exp, &value);	if (GET_CODE (value.base) == SYMBOL_REF)	  {	    /* Don't hash the address of the SYMBOL_REF;	       only use the offset and the symbol name.  */	    hi = value.offset;	    p = XSTR (value.base, 0);	    for (i = 0; p[i] != 0; i++)	      hi = ((hi * 613) + (unsigned) (p[i]));	  }	else if (GET_CODE (value.base) == LABEL_REF)	  hi = value.offset + CODE_LABEL_NUMBER (XEXP (value.base, 0)) * 13;	hi &= (1 << HASHBITS) - 1;	hi %= MAX_HASH_TABLE;      }      return hi;    case PLUS_EXPR:    case MINUS_EXPR:      return (const_hash (TREE_OPERAND (exp, 0)) * 9	      + const_hash (TREE_OPERAND (exp, 1)));    case NOP_EXPR:    case CONVERT_EXPR:    case NON_LVALUE_EXPR:      return const_hash (TREE_OPERAND (exp, 0)) * 7 + 2;          default:      abort ();    }  /* Compute hashing function */  hi = len;  for (i = 0; i < len; i++)    hi = ((hi * 613) + (unsigned) (p[i]));  hi &= (1 << HASHBITS) - 1;  hi %= MAX_HASH_TABLE;  return hi;}/* Compare a constant expression EXP with a constant-descriptor DESC.   Return 1 if DESC describes a constant with the same value as EXP.  */static intcompare_constant (exp, desc)     tree exp;     struct constant_descriptor *desc;{  return 0 != compare_constant_1 (exp, desc->contents);}/* Compare constant expression EXP with a substring P of a constant descriptor.   If they match, return a pointer to the end of the substring matched.   If they do not match, return 0.   Since descriptors are written in polish prefix notation,   this function can be used recursively to test one operand of EXP   against a subdescriptor, and if it succeeds it returns the   address of the subdescriptor for the next operand.  */static char *compare_constant_1 (exp, p)     tree exp;     char *p;{  register char *strp;  register int len;  register enum tree_code code = TREE_CODE (exp);  if (code != (enum tree_code) *p++)    return 0;  /* Either set STRP, P and LEN to pointers and length to compare and exit the     switch, or return the result of the comparison.  */  switch (code)    {    case INTEGER_CST:      /* Integer constants are the same only if the same width of type.  */      if (*p++ != TYPE_PRECISION (TREE_TYPE (exp)))	return 0;      strp = (char *) &TREE_INT_CST_LOW (exp);      len = 2 * sizeof TREE_INT_CST_LOW (exp);      break;    case REAL_CST:      /* Real constants are the same only if the same width of type.  */      if (*p++ != TYPE_PRECISION (TREE_TYPE (exp)))	return 0;      strp = (char *) &TREE_REAL_CST (exp);      len = sizeof TREE_REAL_CST (exp);      break;    case STRING_CST:      if (flag_writable_strings)	return 0;      if (*p++ != TYPE_MODE (TREE_TYPE (exp)))	return 0;      strp = TREE_STRING_POINTER (exp);      len = TREE_STRING_LENGTH (exp);      if (bcmp ((char *) &TREE_STRING_LENGTH (exp), p,		sizeof TREE_STRING_LENGTH (exp)))	return 0;      p += sizeof TREE_STRING_LENGTH (exp);      break;    case COMPLEX_CST:      p = compare_constant_1 (TREE_REALPART (exp), p);      if (p == 0)	return 0;      return compare_constant_1 (TREE_IMAGPART (exp), p);    case CONSTRUCTOR:      if (TREE_CODE (TREE_TYPE (exp)) == SET_TYPE)	{	  int xlen = len = int_size_in_bytes (TREE_TYPE (exp));	  strp = (char *) alloca (len);	  get_set_constructor_bytes (exp, (unsigned char *) strp, len);	  if (bcmp ((char *) &xlen, p, sizeof xlen))	    return 0;	  p += sizeof xlen;	  break;	}      else	{	  register tree link;	  int length = list_length (CONSTRUCTOR_ELTS (exp));	  tree type;	  int have_purpose = 0;	  for (link = CONSTRUCTOR_ELTS (exp); link; link = TREE_CHAIN (link))	    if (TREE_PURPOSE (link))	      have_purpose = 1;	  if (bcmp ((char *) &length, p, sizeof length))	    return 0;	  p += sizeof length;	  /* For record constructors, insist that the types match.	     For arrays, just verify both constructors are for arrays. 	     Then insist that either both or none have any TREE_PURPOSE	     values.  */	  if (TREE_CODE (TREE_TYPE (exp)) == RECORD_TYPE)	    type = TREE_TYPE (exp);	  else	    type = 0;	  if (bcmp ((char *) &type, p, sizeof type))	    return 0;	  p += sizeof type;	  if (bcmp ((char *) &have_purpose, p, sizeof have_purpose))	    return 0;	  p += sizeof have_purpose;	  /* For arrays, insist that the size in bytes match.  */	  if (TREE_CODE (TREE_TYPE (exp)) == ARRAY_TYPE)	    {	      HOST_WIDE_INT size = int_size_in_bytes (TREE_TYPE (exp));	      if (bcmp ((char *) &size, p, sizeof size))		return 0;	      p += sizeof size;	    }	  for (link = CONSTRUCTOR_ELTS (exp); link; link = TREE_CHAIN (link))	    {	      if (TREE_VALUE (link))		{		  if ((p = compare_constant_1 (TREE_VALUE (link), p)) == 0)		    return 0;		}	      else		{		  tree zero = 0;		  if (bcmp ((char *) &zero, p, sizeof zero))		    return 0;		  p += sizeof zero;		}	      if (TREE_PURPOSE (link)		  && TREE_CODE (TREE_PURPOSE (link)) == FIELD_DECL)		{		  if (bcmp ((char *) &TREE_PURPOSE (link), p,			    sizeof TREE_PURPOSE (link)))		    return 0;		  p += sizeof TREE_PURPOSE (link);		}	      else if (TREE_PURPOSE (link))		{		  if ((p = compare_constant_1 (TREE_PURPOSE (link), p)) == 0)		    return 0;		}	      else if (have_purpose)		{		  int zero = 0;		  if (bcmp ((char *) &zero, p, sizeof zero))		    return 0;		  p += sizeof zero;		}	    }	  return p;	}    case ADDR_EXPR:      {	struct addr_const value;	decode_addr_const (exp, &value);	strp = (char *) &value.offset;	len = sizeof value.offset;	/* Compare the offset.  */	while (--len >= 0)	  if (*p++ != *strp++)	    return 0;	/* Compare symbol name.  */	strp = XSTR (value.base, 0);	len = strlen (strp) + 1;      }      break;    case PLUS_EXPR:    case MINUS_EXPR:    case RANGE_EXPR:      p = compare_constant_1 (TREE_OPERAND (exp, 0), p);      if (p == 0)	return 0;      return compare_constant_1 (TREE_OPERAND (exp, 1), p);    case NOP_EXPR:    case CONVERT_EXPR:    case NON_LVALUE_EXPR:      return compare_constant_1 (TREE_OPERAND (exp, 0), p);    default:      abort ();    }  /* Compare constant contents.  */  while (--len >= 0)    if (*p++ != *strp++)      return 0;  return p;}