* config/tc-mips.c (cons_fix_new_mips): New function. Turn

	BFD_RELOC_64 into BFD_RELOC_32.
	* config/tc-mips.h (TC_CONS_FIX_NEW): Define.
	(cons_fix_new_mips): Declare.

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 4a5e80bea94903e715d54fdbde619d0320095b77..5f77533a5ab3ace71cfc8e8664347d30e41f8d08 100644 (file)
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,5 +1,10 @@
 Wed Oct  6 13:01:34 1993  Ian Lance Taylor  (ian@tweedledumb.cygnus.com)
 
+       * config/tc-mips.c (cons_fix_new_mips): New function.  Turn
+       BFD_RELOC_64 into BFD_RELOC_32.
+       * config/tc-mips.h (TC_CONS_FIX_NEW): Define.
+       (cons_fix_new_mips): Declare.
+
        Changes to let cons handle bignums like general expressions.
        * expr.h (expressionS): New field X_unsigned.
        * expr.c (operand): Initialize X_unsigned to 1.  Set it to 0 for

diff --git a/gas/config/tc-mips.c b/gas/config/tc-mips.c
index 31899ea029508cdd569ffb2fa9848dd1ac88190e..6ab42a15f79a9a095365f197daf62199c47c8179 100644 (file)
--- a/gas/config/tc-mips.c
+++ b/gas/config/tc-mips.c
@@ -279,6 +279,9 @@ static expressionS offset_expr;
 static bfd_reloc_code_real_type imm_reloc;
 static bfd_reloc_code_real_type offset_reloc;
 
+/* FIXME: This should be handled in a different way.  */
+extern int target_big_endian;
+
 /*
  * This function is called once, at assembler startup time.  It should
  * set up all the tables, etc. that the MD part of the assembler will need.
@@ -329,7 +332,7 @@ md_begin ()
       const char *name = mips_opcodes[i].name;
 
       retval = hash_insert (op_hash, name, (PTR) &mips_opcodes[i]);
-      if (retval != NULL && *retval != '\0')
+      if (retval != NULL)
        {
          fprintf (stderr, "internal error: can't hash `%s': %s\n",
                   mips_opcodes[i].name, retval);
@@ -355,6 +358,9 @@ md_begin ()
   /* set the default alignment for the text section (2**2) */
   record_alignment (text_section, 2);
 
+  /* FIXME: This should be handled in a different way.  */
+  target_big_endian = byte_order == BIG_ENDIAN;
+
 #ifdef OBJ_ECOFF
   bfd_set_gp_size (stdoutput, g_switch_value);
 #endif
@@ -742,8 +748,9 @@ append_insn (ip, address_expr, reloc_type)
                  & (INSN_UNCOND_BRANCH_DELAY
                     | INSN_COND_BRANCH_DELAY
                     | INSN_COND_BRANCH_LIKELY))
-             /* We can not swap with a trap instruction, since it
-                might change the PC.  */
+             /* We do not swap with a trap instruction, since it
+                complicates trap handlers to have the trap
+                instruction be in a delay slot.  */
              || (prev_insn.insn_mo->pinfo & INSN_TRAP)
              /* If the branch reads a register that the previous
                 instruction sets, we can not swap.  */
@@ -3805,6 +3812,35 @@ md_pcrel_from (fixP)
   return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address;
 }
 
+/* This is called by emit_expr via TC_CONS_FIX_NEW when creating a
+   reloc for a cons.  We could use the definition there, except that
+   we want to handle 64 bit relocs specially.  */
+
+void
+cons_fix_new_mips (frag, where, nbytes, exp)
+     fragS *frag;
+     int where;
+     unsigned int nbytes;
+     expressionS *exp;
+{
+  /* If we are assembling in 32 bit mode, turn an 8 byte reloc into a
+     4 byte reloc.  
+     FIXME: There is no way to select anything but 32 bit mode right
+     now.  */
+  if (nbytes == 8)
+    {
+      if (byte_order == BIG_ENDIAN)
+       where += 4;
+      nbytes = 4;
+    }
+
+  if (nbytes != 2 && nbytes != 4)
+    as_bad ("Unsupported reloc size %d", nbytes);
+
+  fix_new_exp (frag_now, where, (int) nbytes, exp, 0,
+              nbytes == 2 ? BFD_RELOC_16 : BFD_RELOC_32);
+}
+
 int
 md_apply_fix (fixP, valueP)
      fixS *fixP;

diff --git a/gas/config/tc-mips.h b/gas/config/tc-mips.h
index c4f7563f9774ea22231044d6a36ba53fbcdcaf28..1a8ffdf2af30cb8bd48eb78463ee83f972e351f1 100644 (file)
--- a/gas/config/tc-mips.h
+++ b/gas/config/tc-mips.h
@@ -82,3 +82,9 @@ struct mips_cl_insn {
 #endif
 
 extern int tc_get_register PARAMS ((void));
+
+#define tc_frob_label(sym) mips_define_label (sym)
+extern void mips_define_label PARAMS ((struct symbol *));
+
+#define TC_CONS_FIX_NEW cons_fix_new_mips
+extern void cons_fix_new_mips ();