gas/

    * config/tc-arm.c (do_rd_rm_rn): Added warning.

    gas/testsuite/
    * gas/arm/depr-swp.d: New test case.
    * gas/arm/depr-swp.s: New file.
    * gas/arm/depr-swp.l: New file.

6 files changed, 34 insertions, 2 deletions

diff --git a/gas/ChangeLog b/gas/ChangeLog
index a2807f6..f35eb3a 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,8 @@
+2010-02-23  Daniel Gutson  <dgutson@codesourcery.com>
+
+	* config/tc-arm.c (do_rd_rm_rn): Added warning
+	for obsolete insns.
+
 2010-02-23  Andrew Zabolotny  <anpaza@mail.ru>
 
 	PR binutils/11297
diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c
index b3096c5..7ef0f44 100644
--- a/gas/config/tc-arm.c
+++ b/gas/config/tc-arm.c
@@ -6970,8 +6970,16 @@ do_rd_rm_rn (void)
   unsigned Rn = inst.operands[2].reg;
   /* Enforce restrictions on SWP instruction.  */
   if ((inst.instruction & 0x0fbfffff) == 0x01000090)
-    constraint (Rn == inst.operands[0].reg || Rn == inst.operands[1].reg,
-		_("Rn must not overlap other operands"));
+    {
+      constraint (Rn == inst.operands[0].reg || Rn == inst.operands[1].reg,
+		  _("Rn must not overlap other operands"));
+
+      /* SWP{b} is deprecated for ARMv6* and ARMv7.  */
+      if (warn_on_deprecated
+	  && ARM_CPU_HAS_FEATURE (selected_cpu, arm_ext_v6))
+	as_warn (_("swp{b} use is deprecated for this architecture"));
+
+    }
   inst.instruction |= inst.operands[0].reg << 12;
   inst.instruction |= inst.operands[1].reg;
   inst.instruction |= Rn << 16;
diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog
index 301eea3..7a9b538 100644
--- a/gas/testsuite/ChangeLog
+++ b/gas/testsuite/ChangeLog
@@ -1,3 +1,9 @@
+2010-02-23  Daniel Gutson  <dgutson@codesourcery.com>
+
+    * gas/arm/depr-swp.d: New test case.
+    * gas/arm/depr-swp.s: New file.
+    * gas/arm/depr-swp.l: New file.
+
 2010-02-23  Nick Clifton  <nickc@redhat.com>
 
 	* gas/arm/thumb2_bcond.d: Allow for varying number of nops at the
diff --git a/gas/testsuite/gas/arm/depr-swp.d b/gas/testsuite/gas/arm/depr-swp.d
new file mode 100644
index 0000000..40add70
--- /dev/null
+++ b/gas/testsuite/gas/arm/depr-swp.d
@@ -0,0 +1,3 @@
+#name: Deprecated swp{b} instructions
+#source: depr-swp.s
+#error-output: depr-swp.l
diff --git a/gas/testsuite/gas/arm/depr-swp.l b/gas/testsuite/gas/arm/depr-swp.l
new file mode 100644
index 0000000..e5052a7
--- /dev/null
+++ b/gas/testsuite/gas/arm/depr-swp.l
@@ -0,0 +1,3 @@
+[^:]*: Assembler messages:
+[^:]*:5: Warning: swp{b} use is deprecated for this architecture
+[^:]*:7: Warning: swp{b} use is deprecated for this architecture
diff --git a/gas/testsuite/gas/arm/depr-swp.s b/gas/testsuite/gas/arm/depr-swp.s
new file mode 100644
index 0000000..e5c1df3
--- /dev/null
+++ b/gas/testsuite/gas/arm/depr-swp.s
@@ -0,0 +1,7 @@
+.syntax unified
+.arch armv4
+swp r0, r1, [r2]
+.arch armv6
+swp r0, r1, [r2]
+.arch armv7-a
+swp r0, r1, [r2]