From 3b06beb75730bf894e2a9621ab48023806b05c2e Mon Sep 17 00:00:00 2001
From: Ian Lance Taylor <ian@airs.com>
Date: Mon, 18 Sep 1995 21:11:34 +0000
Subject: [PATCH] 	* write.c (fixup_segment): Handle ABS-sym in -sym case
 rather than 	sym-sym case. 	* config/obj-coff.c (fixup_segment): Likewise.
  Permit negative 	symbols if TC_M68K. 	* config/tc-m68k.c
 (tc_coff_fix2rtype): If fx_tcbit is set, return 	R_RELLONG_NEG. 
 (tc_gen_reloc): If fx_tcbit is set, abort. 	(md_apply_fix_2): For a
 negative reloc, move fx_subsy to fx_addsy, 	and set fx_tcbit. Permits
 generating negative relocs for m68k COFF.

---
 gas/ChangeLog        | 10 ++++++++++
 gas/config/tc-m68k.c | 13 +++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 2d5da34f7ed..fd3cde624f3 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,5 +1,15 @@
 Mon Sep 18 15:22:28 1995  Ian Lance Taylor  <ian@cygnus.com>
 
+	* write.c (fixup_segment): Handle ABS-sym in -sym case rather than
+	sym-sym case.
+	* config/obj-coff.c (fixup_segment): Likewise.  Permit negative
+	symbols if TC_M68K.
+	* config/tc-m68k.c (tc_coff_fix2rtype): If fx_tcbit is set, return
+	R_RELLONG_NEG.
+	(tc_gen_reloc): If fx_tcbit is set, abort.
+	(md_apply_fix_2): For a negative reloc, move fx_subsy to fx_addsy,
+	and set fx_tcbit.
+
 	* config/tc-m68k.c (s_reg): Ignore comment field in MRI mode.
 
 Mon Sep 18 14:44:04 1995  Arne H. Juul  <arnej@pvv.unit.no>
diff --git a/gas/config/tc-m68k.c b/gas/config/tc-m68k.c
index d68ac46e449..0e8fa25568b 100644
--- a/gas/config/tc-m68k.c
+++ b/gas/config/tc-m68k.c
@@ -562,6 +562,8 @@ short
 tc_coff_fix2rtype (fixP)
      fixS *fixP;
 {
+  if (fixP->fx_tcbit && fixP->fx_size == 4)
+    return R_RELLONG_NEG;
 #ifdef NO_PCREL_RELOCS
   know (fixP->fx_pcrel == 0);
   return (fixP->fx_size == 1 ? R_RELBYTE
@@ -590,6 +592,9 @@ tc_gen_reloc (section, fixp)
   arelent *reloc;
   bfd_reloc_code_real_type code;
 
+  if (fixP->fx_tcbit)
+    abort ();
+
 #define F(SZ,PCREL)		(((SZ) << 1) + (PCREL))
   switch (F (fixp->fx_size, fixp->fx_pcrel))
     {
@@ -3354,6 +3359,14 @@ md_apply_fix_2 (fixP, val)
       BAD_CASE (fixP->fx_size);
     }
 
+  /* Fix up a negative reloc.  */
+  if (fixP->fx_addsy == NULL && fixP->fx_subsy != NULL)
+    {
+      fixP->fx_addsy = fixP->fx_subsy;
+      fixP->fx_subsy = NULL;
+      fixP->fx_tcbit = 1;
+    }
+
   /* For non-pc-relative values, it's conceivable we might get something
      like "0xff" for a byte field.  So extend the upper part of the range
      to accept such numbers.  We arbitrarily disallow "-0xff" or "0xff+0xff",
-- 
2.30.2