Add Intel MCU support to gas

-march=iamcu must be passed to i386 assembler to generate Intel MCU object
file.

gas/

	* config/tc-i386.c (cpu_arch): Add iamcu.
	(i386_align_code): Handle PROCESSOR_IAMCU.
	(i386_arch): Likewise.
	(i386_mach): Likewise.
	(i386_target_format): Likewise.
	(valid_iamcu_cpu_flags): New function.
	(check_cpu_arch_compatible): Only allow Intel MCU instructions
	when targeting Intel MCU.
	(set_cpu_arch): Call valid_iamcu_cpu_flags to check if CPU flags
	are valid for Intel MCU.
	(md_parse_option): Likewise.
	* tc-i386.h (ELF_TARGET_IAMCU_FORMAT): New.
	(processor_type): Add PROCESSOR_IAMCU.
	* doc/c-i386.texi: Document iamcu.

gas/testsuite/

	* gas/i386/i386.exp: Run iamcu-1, iamcu-2, iamcu-3, iamcu-inval-1,
	iamcu-inval-2 and iamcu-inval-3.
	* gas/i386/iamcu-1.d: New file.
	* gas/i386/iamcu-1.s: Likewise.
	* gas/i386/iamcu-2.d: Likewise.
	* gas/i386/iamcu-2.s: Likewise.
	* gas/i386/iamcu-3.d: Likewise.
	* gas/i386/iamcu-3.s: Likewise.
	* gas/i386/iamcu-inval-1.l: Likewise.
	* gas/i386/iamcu-inval-1.s: Likewise.
	* gas/i386/iamcu-inval-2.l: Likewise.
	* gas/i386/iamcu-inval-2.s: Likewise.
	* gas/i386/iamcu-inval-3.l: Likewise.
	* gas/i386/iamcu-inval-3.s: Likewise.

14 files changed, 200 insertions, 2 deletions

diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog
index b3efb8f..da97ddc 100644
--- a/gas/testsuite/ChangeLog
+++ b/gas/testsuite/ChangeLog
@@ -1,3 +1,20 @@
+2015-05-11  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* gas/i386/i386.exp: Run iamcu-1, iamcu-2, iamcu-3, iamcu-inval-1,
+	iamcu-inval-2 and iamcu-inval-3.
+	* gas/i386/iamcu-1.d: New file.
+	* gas/i386/iamcu-1.s: Likewise.
+	* gas/i386/iamcu-2.d: Likewise.
+	* gas/i386/iamcu-2.s: Likewise.
+	* gas/i386/iamcu-3.d: Likewise.
+	* gas/i386/iamcu-3.s: Likewise.
+	* gas/i386/iamcu-inval-1.l: Likewise.
+	* gas/i386/iamcu-inval-1.s: Likewise.
+	* gas/i386/iamcu-inval-2.l: Likewise.
+	* gas/i386/iamcu-inval-2.s: Likewise.
+	* gas/i386/iamcu-inval-3.l: Likewise.
+	* gas/i386/iamcu-inval-3.s: Likewise.
+
 2015-05-08  Nick Clifton  <nickc@redhat.com>
 
 	PR gas/18347
diff --git a/gas/testsuite/gas/i386/i386.exp b/gas/testsuite/gas/i386/i386.exp
index 9492e80..c66dbc5 100644
--- a/gas/testsuite/gas/i386/i386.exp
+++ b/gas/testsuite/gas/i386/i386.exp
@@ -397,6 +397,15 @@ if [expr ([istarget "i*86-*-*"] ||  [istarget "x86_64-*-*"]) && [gas_32_check]]
 
 	run_dump_test "relax-3"
 	run_dump_test "relax-4"
+
+	if {![istarget "*-*-nacl*"]} then {
+	    run_dump_test "iamcu-1"
+	    run_dump_test "iamcu-2"
+	    run_dump_test "iamcu-3"
+	    run_list_test "iamcu-inval-1" "-march=iamcu -al"
+	    run_list_test "iamcu-inval-2" "-march=iamcu -al"
+	    run_list_test "iamcu-inval-3" "-march=iamcu+sse4 -al"
+	}
     }
 
     # This is a PE specific test.
@@ -414,8 +423,10 @@ if [expr ([istarget "i*86-*-*"] ||  [istarget "x86_64-*-*"]) && [gas_32_check]]
 
 # Common tests
 if [expr [istarget "i*86-*-*"] || [istarget "x86_64-*-*"]] then {
-    run_dump_test "intel-expr"
-    run_dump_test "string-ok"
+    if {![istarget "i*86-*-elfiamcu"]} then {
+	run_dump_test "intel-expr"
+	run_dump_test "string-ok"
+    }
     run_list_test "string-bad" ""
     run_list_test "reg-bad" ""
     run_list_test "space1" "-al"
diff --git a/gas/testsuite/gas/i386/iamcu-1.d b/gas/testsuite/gas/i386/iamcu-1.d
new file mode 100644
index 0000000..c4d22bf
--- /dev/null
+++ b/gas/testsuite/gas/i386/iamcu-1.d
@@ -0,0 +1,52 @@
+#as: -J -march=iamcu
+#objdump: -dw
+#not-target: *-*-nacl*
+
+.*: +file format elf32-iamcu.*
+
+Disassembly of section .text:
+
+0+ <.text>:
+[ 	]*[a-f0-9]+:	66 0f be f0          	movsbw %al,%si
+[ 	]*[a-f0-9]+:	0f be f0             	movsbl %al,%esi
+[ 	]*[a-f0-9]+:	0f bf f0             	movswl %ax,%esi
+[ 	]*[a-f0-9]+:	0f be 10             	movsbl \(%eax\),%edx
+[ 	]*[a-f0-9]+:	66 0f be 10          	movsbw \(%eax\),%dx
+[ 	]*[a-f0-9]+:	66 0f be 10          	movsbw \(%eax\),%dx
+[ 	]*[a-f0-9]+:	0f be 10             	movsbl \(%eax\),%edx
+[ 	]*[a-f0-9]+:	0f bf 10             	movswl \(%eax\),%edx
+[ 	]*[a-f0-9]+:	0f be 10             	movsbl \(%eax\),%edx
+[ 	]*[a-f0-9]+:	66 0f be 10          	movsbw \(%eax\),%dx
+[ 	]*[a-f0-9]+:	0f bf 10             	movswl \(%eax\),%edx
+[ 	]*[a-f0-9]+:	66 0f b6 f0          	movzbw %al,%si
+[ 	]*[a-f0-9]+:	0f b6 f0             	movzbl %al,%esi
+[ 	]*[a-f0-9]+:	0f b7 f0             	movzwl %ax,%esi
+[ 	]*[a-f0-9]+:	0f b6 10             	movzbl \(%eax\),%edx
+[ 	]*[a-f0-9]+:	66 0f b6 10          	movzbw \(%eax\),%dx
+[ 	]*[a-f0-9]+:	66 0f b6 10          	movzbw \(%eax\),%dx
+[ 	]*[a-f0-9]+:	0f b6 10             	movzbl \(%eax\),%edx
+[ 	]*[a-f0-9]+:	0f b7 10             	movzwl \(%eax\),%edx
+[ 	]*[a-f0-9]+:	0f b6 10             	movzbl \(%eax\),%edx
+[ 	]*[a-f0-9]+:	66 0f b6 10          	movzbw \(%eax\),%dx
+[ 	]*[a-f0-9]+:	0f b6 10             	movzbl \(%eax\),%edx
+[ 	]*[a-f0-9]+:	66 0f b6 10          	movzbw \(%eax\),%dx
+[ 	]*[a-f0-9]+:	0f b7 10             	movzwl \(%eax\),%edx
+[ 	]*[a-f0-9]+:	66 0f be f0          	movsbw %al,%si
+[ 	]*[a-f0-9]+:	0f be f0             	movsbl %al,%esi
+[ 	]*[a-f0-9]+:	0f bf f0             	movswl %ax,%esi
+[ 	]*[a-f0-9]+:	0f be 10             	movsbl \(%eax\),%edx
+[ 	]*[a-f0-9]+:	66 0f be 10          	movsbw \(%eax\),%dx
+[ 	]*[a-f0-9]+:	0f bf 10             	movswl \(%eax\),%edx
+[ 	]*[a-f0-9]+:	66 0f b6 f0          	movzbw %al,%si
+[ 	]*[a-f0-9]+:	0f b6 f0             	movzbl %al,%esi
+[ 	]*[a-f0-9]+:	0f b7 f0             	movzwl %ax,%esi
+[ 	]*[a-f0-9]+:	0f b6 10             	movzbl \(%eax\),%edx
+[ 	]*[a-f0-9]+:	66 0f b6 10          	movzbw \(%eax\),%dx
+[ 	]*[a-f0-9]+:	0f b7 10             	movzwl \(%eax\),%edx
+[ 	]*[a-f0-9]+:	66 0f be 00          	movsbw \(%eax\),%ax
+[ 	]*[a-f0-9]+:	0f be 00             	movsbl \(%eax\),%eax
+[ 	]*[a-f0-9]+:	0f bf 00             	movswl \(%eax\),%eax
+[ 	]*[a-f0-9]+:	66 0f b6 00          	movzbw \(%eax\),%ax
+[ 	]*[a-f0-9]+:	0f b6 00             	movzbl \(%eax\),%eax
+[ 	]*[a-f0-9]+:	0f b7 00             	movzwl \(%eax\),%eax
+#pass
diff --git a/gas/testsuite/gas/i386/iamcu-1.s b/gas/testsuite/gas/i386/iamcu-1.s
new file mode 100644
index 0000000..b631dfa
--- /dev/null
+++ b/gas/testsuite/gas/i386/iamcu-1.s
@@ -0,0 +1,51 @@
+# IAMCU instructions
+	.text
+
+	movsx	%al, %si
+	movsx	%al, %esi
+	movsx	%ax, %esi
+	movsx	(%eax), %edx
+	movsx	(%eax), %dx
+	movsxb	(%eax), %dx
+	movsxb	(%eax), %edx
+	movsxw	(%eax), %edx
+	movsbl	(%eax), %edx
+	movsbw	(%eax), %dx
+	movswl	(%eax), %edx
+
+	movzx	%al, %si
+	movzx	%al, %esi
+	movzx	%ax, %esi
+	movzx	(%eax), %edx
+	movzx	(%eax), %dx
+	movzxb	(%eax), %dx
+	movzxb	(%eax), %edx
+	movzxw	(%eax), %edx
+	movzb	(%eax), %edx
+	movzb	(%eax), %dx
+	movzbl	(%eax), %edx
+	movzbw	(%eax), %dx
+	movzwl	(%eax), %edx
+
+	.intel_syntax noprefix
+
+	movsx	si,al
+	movsx	esi,al
+	movsx	esi,ax
+	movsx	edx,BYTE PTR [eax]
+	movsx	dx,BYTE PTR [eax]
+	movsx	edx,WORD PTR [eax]
+
+	movzx	si,al
+	movzx	esi,al
+	movzx	esi,ax
+	movzx	edx,BYTE PTR [eax]
+	movzx	dx,BYTE PTR [eax]
+	movzx	edx,WORD PTR [eax]
+
+	movsx ax, byte ptr [eax]
+	movsx eax, byte ptr [eax]
+	movsx eax, word ptr [eax]
+	movzx ax, byte ptr [eax]
+	movzx eax, byte ptr [eax]
+	movzx eax, word ptr [eax]
diff --git a/gas/testsuite/gas/i386/iamcu-2.d b/gas/testsuite/gas/i386/iamcu-2.d
new file mode 100644
index 0000000..f3f3bfd
--- /dev/null
+++ b/gas/testsuite/gas/i386/iamcu-2.d
@@ -0,0 +1,11 @@
+#as: -J -march=iamcu
+#objdump: -dw
+#not-target: *-*-nacl*
+
+.*: +file format elf32-iamcu.*
+
+Disassembly of section .text:
+
+0+ <.text>:
+[ 	]*[a-f0-9]+:	66 0f 1f 00          	nopw   \(%eax\)
+#pass
diff --git a/gas/testsuite/gas/i386/iamcu-2.s b/gas/testsuite/gas/i386/iamcu-2.s
new file mode 100644
index 0000000..0523277
--- /dev/null
+++ b/gas/testsuite/gas/i386/iamcu-2.s
@@ -0,0 +1,4 @@
+	.text
+	.arch .nop
+
+	nopw	(%eax)
diff --git a/gas/testsuite/gas/i386/iamcu-3.d b/gas/testsuite/gas/i386/iamcu-3.d
new file mode 100644
index 0000000..291f601
--- /dev/null
+++ b/gas/testsuite/gas/i386/iamcu-3.d
@@ -0,0 +1,11 @@
+#as: -J -march=iamcu+nop
+#objdump: -dw
+#not-target: *-*-nacl*
+
+.*: +file format elf32-iamcu.*
+
+Disassembly of section .text:
+
+0+ <.text>:
+[ 	]*[a-f0-9]+:	66 0f 1f 00          	nopw   \(%eax\)
+#pass
diff --git a/gas/testsuite/gas/i386/iamcu-3.s b/gas/testsuite/gas/i386/iamcu-3.s
new file mode 100644
index 0000000..fac63ca
--- /dev/null
+++ b/gas/testsuite/gas/i386/iamcu-3.s
@@ -0,0 +1,2 @@
+	.text
+	nopw	(%eax)
diff --git a/gas/testsuite/gas/i386/iamcu-inval-1.l b/gas/testsuite/gas/i386/iamcu-inval-1.l
new file mode 100644
index 0000000..7bbbc2d
--- /dev/null
+++ b/gas/testsuite/gas/i386/iamcu-inval-1.l
@@ -0,0 +1,21 @@
+.*: Assembler messages:
+.*:4: Error: .*
+.*:5: Error: .*
+.*:7: Error: .*
+.*:8: Error: .*
+.*:10: Error: .*
+.*:11: Error: .*
+GAS LISTING .*
+
+
+[ 	]*1[ 	]+\# Invalid Intel MCU instructions
+[ 	]*2[ 	]+\.text
+[ 	]*3[ 	]+
+[ 	]*4[ 	]+fnstsw
+[ 	]*5[ 	]+fstsw	%ax
+[ 	]*6[ 	]+
+[ 	]*7[ 	]+cmove	%eax,%ebx
+[ 	]*8[ 	]+nopw	\(%eax\)
+[ 	]*9[ 	]+
+[ 	]*10[ 	]+movq	%xmm1, \(%eax\)
+[ 	]*11[ 	]+movnti	%eax, \(%eax\)
diff --git a/gas/testsuite/gas/i386/iamcu-inval-1.s b/gas/testsuite/gas/i386/iamcu-inval-1.s
new file mode 100644
index 0000000..4e25880
--- /dev/null
+++ b/gas/testsuite/gas/i386/iamcu-inval-1.s
@@ -0,0 +1,11 @@
+# Invalid Intel MCU instructions
+	.text
+
+	fnstsw
+	fstsw	%ax
+
+	cmove	%eax,%ebx
+	nopw	(%eax)
+
+	movq	%xmm1, (%eax)
+	movnti	%eax, (%eax)
diff --git a/gas/testsuite/gas/i386/iamcu-inval-2.l b/gas/testsuite/gas/i386/iamcu-inval-2.l
new file mode 100644
index 0000000..e62e29d
--- /dev/null
+++ b/gas/testsuite/gas/i386/iamcu-inval-2.l
@@ -0,0 +1,2 @@
+.*: Assembler messages:
+.*:2: Fatal error: `.sse4.1' isn't valid for Intel MCU
diff --git a/gas/testsuite/gas/i386/iamcu-inval-2.s b/gas/testsuite/gas/i386/iamcu-inval-2.s
new file mode 100644
index 0000000..46ef3ff
--- /dev/null
+++ b/gas/testsuite/gas/i386/iamcu-inval-2.s
@@ -0,0 +1,2 @@
+# Invalid .arch for Intel MCU
+	.arch .sse4.1
diff --git a/gas/testsuite/gas/i386/iamcu-inval-3.l b/gas/testsuite/gas/i386/iamcu-inval-3.l
new file mode 100644
index 0000000..a9762a5
--- /dev/null
+++ b/gas/testsuite/gas/i386/iamcu-inval-3.l
@@ -0,0 +1,2 @@
+Assembler messages:
+Fatal error: `sse4' isn't valid for Intel MCU
diff --git a/gas/testsuite/gas/i386/iamcu-inval-3.s b/gas/testsuite/gas/i386/iamcu-inval-3.s
new file mode 100644
index 0000000..1c255e2
--- /dev/null
+++ b/gas/testsuite/gas/i386/iamcu-inval-3.s
@@ -0,0 +1 @@
+.include "iamcu-1.s"