UIMM

2 files changed, 20 insertions, 0 deletions

diff --git a/simplex86.h b/simplex86.h
index 98b2ff6..2fdec0d 100644
--- a/simplex86.h
+++ b/simplex86.h
@@ -239,6 +239,13 @@ typedef enum
       ((v) >= -32768 && (v) < 32768)? OP_I16 :				\
       OP_I32))
 
+#define UIMM(v)								\
+    ((((int64_t)(ssize_t)(v)) << 6) |					\
+     (((v) == 1)? IMM (1) :						\
+      ((v) >= 0 && (v) < 256)? IMM ((int8_t)v) :			\
+      ((v) >= 0 && (v) < 65536)? IMM ((int16_t)v) :			\
+      IMM (v)))
+
 #define IMM64(v)							\
     IMM ((((int64_t)(ssize_t)(v)) >> 32)), IMM ((int32_t)(ssize_t)(v))
 
diff --git a/testsuite.c b/testsuite.c
index 0aece9e..7eba0f8 100644
--- a/testsuite.c
+++ b/testsuite.c
@@ -202,6 +202,18 @@ test_crc32 (assembler_t *as)
 }
 
 static uint8_t *
+test_pshuflw (assembler_t *as)
+{
+    fragment_t *frag = fragment_new (as);
+    
+    BEGIN_ASM (frag)
+	I_pshuflw,	xmm2, xmm2, UIMM (0xff),
+    END_ASM ();
+
+    return assembler_link (as, frag, NULL);
+}
+
+static uint8_t *
 test_riprel (assembler_t *as)
 {
     fragment_t *frag = fragment_new (as);
@@ -464,6 +476,7 @@ main ()
     success &= run_test (as, "test_misc", test_misc, 0x483565c1);
     success &= run_test (as, "test_riprel", test_riprel, 0xf5497642);
     success &= run_test (as, "test_movdq", test_movdq, 0xf6f727a6);
+    success &= run_test (as, "test_pshuflw", test_pshuflw, 0x7a8c7f59);
 
     if (success)
 	printf ("Test suite PASSED\n");