Mon Feb 12 15:16:29 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>

	Support for OBJ_ELF on m68k, mostly inside #ifdef OBJ_ELF:
	* config/m68k-parse.h (enum pic_relocation): Define.
	(struct m68k_exp): Add pic_reloc field.
	* config/tc-m68k.h (TC_RELOC_RTSYM_LOC_FIXUP): Define.
	(tc_fix_adjustable): Define to call tc_m68k_fix_adjustable.
	(NO_RELOC): Define to BFD_RELOC_NONE if BFD_ASSEMBLER, to zero
	otherwise.
	* config/tc-m68k.c: Delete definition of NO_RELOC.
 	(struct m68k_it): Add pic_reloc field.
	(add_fix): Copy over pic_reloc field.
	(md_pseudo_table): Interpret .align parameter as byte count.
	(mote_pseudo_table): Likewise.
	(tc_m68k_fix_adjustable): New function.
	(get_reloc_code): New function.
	(md_assemble): Use it as last argument to fix_new_exp.
	(md_apply_fix_2): For a relocation against a symbol don't put the
	addend into the data.
	(tc_gen_reloc): Different addend computation for OBJ_ELF.
	(m68k_ip): Don't relax an operand that requires pic relocation.
	(md_begin): Align .text, .data and .bss on 4 byte boundary by
	default.
	* write.c (fixup_segment): Don't add symbol value to addend if
 	TC_M68K and OBJ_ELF.
	* config/m68k-parse.y (yylex): Handle @PLTPC, etc.
	(motorola_operand): Add rule for `(zapc, EXPR)'.

1 files changed, 48 insertions, 1 deletions

diff --git a/gas/write.c b/gas/write.c
index 91871da..97df4fb 100644
--- a/gas/write.c
+++ b/gas/write.c
@@ -1,5 +1,5 @@
 /* write.c - emit .o file
-   Copyright (C) 1986, 87, 90, 91, 92, 93, 94, 1995
+   Copyright (C) 1986, 87, 90, 91, 92, 93, 94, 95, 1996
    Free Software Foundation, Inc.
 
    This file is part of GAS, the GNU Assembler.
@@ -94,6 +94,8 @@ int magic_number_for_object_file = DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE;
 
 #endif /* BFD_ASSEMBLER */
 
+static int n_fixups;
+
 #ifdef BFD_ASSEMBLER
 static fixS *fix_new_internal PARAMS ((fragS *, int where, int size,
 				       symbolS *add, symbolS *sub,
@@ -133,6 +135,8 @@ fix_new_internal (frag, where, size, add_symbol, sub_symbol, offset, pcrel,
 {
   fixS *fixP;
 
+  n_fixups++;
+
   fixP = (fixS *) obstack_alloc (&notes, sizeof (fixS));
 
   fixP->fx_frag = frag;
@@ -799,12 +803,23 @@ write_relocs (abfd, sec, xxx)
     {
       arelent *reloc;
       bfd_reloc_status_type s;
+      symbolS *sym;
 
       if (fixp->fx_done)
 	{
 	  n--;
 	  continue;
 	}
+
+      /* If this is an undefined symbol which was equated to another
+         symbol, then use generate the reloc against the latter symbol
+         rather than the former.  */
+      sym = fixp->fx_addsy;
+      while (sym->sy_value.X_op == O_symbol
+	     && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym)))
+	sym = sym->sy_value.X_add_symbol;
+      fixp->fx_addsy = sym;
+
       reloc = tc_gen_reloc (sec, fixp);
       if (!reloc)
 	{
@@ -844,6 +859,7 @@ write_relocs (abfd, sec, xxx)
       arelent **reloc;
       char *data;
       bfd_reloc_status_type s;
+      symbolS *sym;
       int j;
 
       if (fixp->fx_done)
@@ -851,6 +867,16 @@ write_relocs (abfd, sec, xxx)
 	  n--;
 	  continue;
 	}
+
+      /* If this is an undefined symbol which was equated to another
+         symbol, then use generate the reloc against the latter symbol
+         rather than the former.  */
+      sym = fixp->fx_addsy;
+      while (sym->sy_value.X_op == O_symbol
+	     && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym)))
+	sym = sym->sy_value.X_add_symbol;
+      fixp->fx_addsy = sym;
+
       reloc = tc_gen_reloc (sec, fixp);
 
       for (j = 0; reloc[j]; j++)
@@ -1642,6 +1668,15 @@ write_object_file ()
 		resolve_symbol_value (symp);
 	    }
 
+	  /* Skip symbols which were equated to undefined or common
+             symbols.  */
+	  if (symp->sy_value.X_op == O_symbol
+	      && (! S_IS_DEFINED (symp) || S_IS_COMMON (symp)))
+	    {
+	      symbol_remove (symp, &symbol_rootP, &symbol_lastP);
+	      continue;
+	    }
+
 	  /* So far, common symbols have been treated like undefined symbols.
 	     Put them in the common section now.  */
 	  if (S_IS_DEFINED (symp) == 0
@@ -1703,6 +1738,9 @@ write_object_file ()
 
   /* Now do any format-specific adjustments to the symbol table, such
      as adding file symbols.  */
+#ifdef tc_adjust_symtab
+  tc_adjust_symtab ();
+#endif
 #ifdef obj_adjust_symtab
   obj_adjust_symtab ();
 #endif
@@ -2402,9 +2440,11 @@ fixup_segment (fixP, this_segment_type)
 	      else
 		{
 		  seg_reloc_count++;
+#if !(defined (TC_M68K) && defined (OBJ_ELF))
 #if !defined (TC_I386) || !(defined (OBJ_ELF) || defined (OBJ_COFF))
 		  add_number += S_GET_VALUE (add_symbolP);
 #endif
+#endif
 		}
 	    }
 	}
@@ -2531,6 +2571,13 @@ number_to_chars_littleendian (buf, val, n)
     }
 }
 
+void
+write_print_statistics (file)
+     FILE *file;
+{
+  fprintf (stderr, "fixups: %d\n", n_fixups);
+}
+
 /* for debugging */
 extern int indent_level;
 extern void print_symbol_value_1 ();