From: Ian Lance Taylor <ian@airs.com>
Date: Mon, 14 Sep 1992 05:25:56 +0000 (+0000)
Subject: Sun Sep 13 20:29:39 1992  Ian Lance Taylor  (ian@cygnus.com)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e41474b77db9e86cbc8b4e2860b74fa8b647cffc;p=binutils-gdb.git

Sun Sep 13 20:29:39 1992  Ian Lance Taylor  (ian@cygnus.com)

	* obj-coffbfd.h: define WARN_SIGNED_OVERFLOW_WORD.
	obj-coffbfd.c (fixup_segment): check for signed .word overflow if
	WARN_SIGNED_OVERFLOW_WORD.
---

diff --git a/gas/config/ChangeLog b/gas/config/ChangeLog
index f8adc0f9a69..4b3bef2ca78 100644
--- a/gas/config/ChangeLog
+++ b/gas/config/ChangeLog
@@ -1,5 +1,9 @@
 Sun Sep 13 20:29:39 1992  Ian Lance Taylor  (ian@cygnus.com)
 
+	* obj-coffbfd.h: define WARN_SIGNED_OVERFLOW_WORD.
+	obj-coffbfd.c (fixup_segment): check for signed .word overflow if
+	WARN_SIGNED_OVERFLOW_WORD.
+
 	* obj-coffbfd.c (fixup_segment): fixed missing parens in
 	expression checking for byte or word overflow.
 
diff --git a/gas/config/obj-coffbfd.c b/gas/config/obj-coffbfd.c
index 1f59b558ccb..b66269cca81 100644
--- a/gas/config/obj-coffbfd.c
+++ b/gas/config/obj-coffbfd.c
@@ -2262,6 +2262,17 @@ segT		this_segment_type)
 			as_bad("Value of %d too large for field of %d bytes at 0x%x",
 			       add_number, size, fragP->fr_address + where);
 		    }		/* generic error checking */
+#ifdef WARN_SIGNED_OVERFLOW_WORD
+		/* Warn if a .word value is too large when treated as
+		   a signed number.  We already know it is not too
+		   negative.  This is to catch over-large switches
+		   generated by gcc on the 68k.  */
+		if (! flagseen['J']
+		    && size == 2
+		    && add_number > 0x7fff)
+		  as_bad ("Signed .word overflow; switch may be too large; %d at 0x%x",
+			  add_number, fragP->fr_address + where);
+#endif
 	    }			/* not a bit fix */
 	/* once this fix has been applied, we don't have to output anything 
 	   nothing more need be done -*/
diff --git a/gas/config/obj-coffbfd.h b/gas/config/obj-coffbfd.h
index 217fd86aca0..ad8b5d44c43 100644
--- a/gas/config/obj-coffbfd.h
+++ b/gas/config/obj-coffbfd.h
@@ -23,6 +23,7 @@
 #define OBJ_COFF 1
 
 #define WORKING_DOT_WORD
+#define WARN_SIGNED_OVERFLOW_WORD
 
 #include "targ-cpu.h"