diff --git a/src/arch/x86/isa/insts/general_purpose/flags/set_and_clear.py b/src/arch/x86/isa/insts/general_purpose/flags/set_and_clear.py
index e151dc61d..cfd90638b 100644
--- a/src/arch/x86/isa/insts/general_purpose/flags/set_and_clear.py
+++ b/src/arch/x86/isa/insts/general_purpose/flags/set_and_clear.py
@@ -56,14 +56,14 @@
 microcode = '''
 def macroop CLD {
     ruflags t1
-    limm t2, "~((uint64_t)DFBit)"
+    limm t2, "~((uint64_t)DFBit)", dataSize=8
     and t1, t1, t2
     wruflags t1, t0
 };
 
 def macroop STD {
     ruflags t1
-    limm t2, "DFBit"
+    limm t2, "DFBit", dataSize=8
     or t1, t1, t2
     wruflags t1, t0
 };
@@ -87,14 +87,14 @@ def macroop CMC {
 
 def macroop STI {
     rflags t1
-    limm t2, "IFBit"
+    limm t2, "IFBit", dataSize=8
     or t1, t1, t2
     wrflags t1, t0
 };
 
 def macroop CLI {
     rflags t1
-    limm t2, "~IFBit"
+    limm t2, "~IFBit", dataSize=8
     and t1, t1, t2
     wrflags t1, t0
 };
diff --git a/src/arch/x86/isa/insts/general_purpose/system_calls.py b/src/arch/x86/isa/insts/general_purpose/system_calls.py
index 67607d5f8..fb282502d 100644
--- a/src/arch/x86/isa/insts/general_purpose/system_calls.py
+++ b/src/arch/x86/isa/insts/general_purpose/system_calls.py
@@ -57,14 +57,14 @@ microcode = '''
 def macroop SYSCALL_64
 {
     # All 1s.
-    limm t1, "(uint64_t)(-1)"
+    limm t1, "(uint64_t)(-1)", dataSize=8
 
     # Save the next RIP.
     rdip rcx
     
     # Stick rflags with RF masked into r11.
     rflags t2
-    limm t3, "~RFBit"
+    limm t3, "~RFBit", dataSize=8
     andi r11, t2, t3, dataSize=8
 
     rdval t3, star
@@ -78,7 +78,7 @@ def macroop SYSCALL_64
     # Not writable, read/execute-able, not expandDown,
     # dpl=0, defaultSize=0, long mode
     limm t4, ((0 << 0) | (1 << 1) | (0 << 2) | \
-              (0 << 3) | (0 << 5) | (1 << 6))
+              (0 << 3) | (0 << 5) | (1 << 6)), dataSize=8
     wrattr cs, t4
 
     # Set up SS.
@@ -89,7 +89,7 @@ def macroop SYSCALL_64
     # Writable, readable, not expandDown,
     # dpl=0, defaultSize=0, not long mode
     limm t4, ((1 << 0) | (1 << 1) | (0 << 2) | \
-              (0 << 3) | (0 << 5) | (0 << 6))
+              (0 << 3) | (0 << 5) | (0 << 6)), dataSize=8
     wrattr ss, t4
 
     # Set the new rip.
@@ -106,14 +106,14 @@ def macroop SYSCALL_64
 def macroop SYSCALL_COMPAT
 {
     # All 1s.
-    limm t1, "(uint64_t)(-1)"
+    limm t1, "(uint64_t)(-1)", dataSize=8
 
     # Save the next RIP.
     rdip rcx
     
     # Stick rflags with RF masked into r11.
     rflags t2
-    limm t3, "~RFBit"
+    limm t3, "~RFBit", dataSize=8
     andi r11, t2, t3, dataSize=8
 
     rdval t3, star
@@ -127,7 +127,7 @@ def macroop SYSCALL_COMPAT
     # Not writable, read/execute-able, not expandDown,
     # dpl=0, defaultSize=0, long mode
     limm t4, ((0 << 0) | (1 << 1) | (0 << 2) | \
-              (0 << 3) | (0 << 5) | (1 << 6))
+              (0 << 3) | (0 << 5) | (1 << 6)), dataSize=8
     wrattr cs, t4
 
     # Set up SS.
@@ -138,7 +138,7 @@ def macroop SYSCALL_COMPAT
     # Writable, readable, not expandDown,
     # dpl=0, defaultSize=0, not long mode
     limm t4, ((1 << 0) | (1 << 1) | (0 << 2) | \
-              (0 << 3) | (0 << 5) | (0 << 6))
+              (0 << 3) | (0 << 5) | (0 << 6)), dataSize=8
     wrattr ss, t4
 
     # Set the new rip.
@@ -160,14 +160,14 @@ def macroop SYSCALL_LEGACY
 def macroop SYSRET_TO_64
 {
     # All 1s.
-    limm t1, "(uint64_t)(-1)"
+    limm t1, "(uint64_t)(-1)", dataSize=8
 
     rdval t3, star
     srli t3, t3, 48, dataSize=8
     ori t3, t3, 3, dataSize=1
 
     # Set rflags to r11 with RF and VM cleared.
-    limm t4, "~(RFBit | VMBit)"
+    limm t4, "~(RFBit | VMBit)", dataSize=8
     and t4, t4, r11, dataSize=8
     wrflags t4, t0
 
@@ -179,7 +179,7 @@ def macroop SYSRET_TO_64
     # Not writable, read/execute-able, not expandDown,
     # dpl=3, defaultSize=0, long mode
     limm t4, ((0 << 0) | (1 << 1) | (0 << 2) | \
-              (3 << 3) | (0 << 5) | (1 << 6))
+              (3 << 3) | (0 << 5) | (1 << 6)), dataSize=8
     wrattr cs, t4
 
     # Only the selector is changed for SS.
@@ -193,14 +193,14 @@ def macroop SYSRET_TO_64
 def macroop SYSRET_TO_COMPAT
 {
     # All 1s.
-    limm t1, "(uint64_t)(-1)"
+    limm t1, "(uint64_t)(-1)", dataSize=8
 
     rdval t3, star
     srli t3, t3, 48, dataSize=8
     ori t3, t3, 3, dataSize=1
 
     # Set rflags to r11 with RF and VM cleared.
-    limm t4, "~(RFBit | VMBit)"
+    limm t4, "~(RFBit | VMBit)", dataSize=8
     and t4, t4, r11, dataSize=8
     wrflags t4, t0
 
@@ -211,7 +211,7 @@ def macroop SYSRET_TO_COMPAT
     # Not writable, read/execute-able, not expandDown,
     # dpl=3, defaultSize=1, not long mode
     limm t4, ((0 << 0) | (1 << 1) | (0 << 2) | \
-              (3 << 3) | (1 << 5) | (0 << 6))
+              (3 << 3) | (1 << 5) | (0 << 6)), dataSize=8
     wrattr cs, t4
 
     # Only the selector is changed for SS.
diff --git a/src/arch/x86/isa/insts/romutil.py b/src/arch/x86/isa/insts/romutil.py
index aa013dbd1..2fcc56e8a 100644
--- a/src/arch/x86/isa/insts/romutil.py
+++ b/src/arch/x86/isa/insts/romutil.py
@@ -164,8 +164,8 @@ def rom
     # The type field of the original gate starts at bit 40.
 
     # Set the TF, NT, and RF bits. We'll flip them at the end.
-    limm t6, (1 << 8) | (1 << 14) | (1 << 16)
-    or t10, t10, t6
+    limm t6, (1 << 8) | (1 << 14) | (1 << 16), dataSize=8
+    or t10, t10, t6, dataSize=8
     srli t5, t4, 40, dataSize=8
     srli t7, t10, 9, dataSize=8
     xor t5, t7, t5, dataSize=8
diff --git a/src/arch/x86/isa/insts/system/segmentation.py b/src/arch/x86/isa/insts/system/segmentation.py
index acbca9f6e..b83fcba95 100644
--- a/src/arch/x86/isa/insts/system/segmentation.py
+++ b/src/arch/x86/isa/insts/system/segmentation.py
@@ -171,7 +171,7 @@ def macroop LIDT_16_P
 def macroop LTR_R
 {
     chks reg, t0, TRCheck
-    limm t4, 0
+    limm t4, 0, dataSize=8
     srli t4, reg, 3, dataSize=2
     ldst t1, tsg, [8, t4, t0], dataSize=8
     ld t2, tsg, [8, t4, t0], 8, dataSize=8
@@ -187,7 +187,7 @@ def macroop LTR_M
 {
     ld t5, seg, sib, disp, dataSize=2
     chks t5, t0, TRCheck
-    limm t4, 0
+    limm t4, 0, dataSize=8
     srli t4, t5, 3, dataSize=2
     ldst t1, tsg, [8, t4, t0], dataSize=8
     ld t2, tsg, [8, t4, t0], 8, dataSize=8
@@ -204,7 +204,7 @@ def macroop LTR_P
     rdip t7
     ld t5, seg, riprel, disp, dataSize=2
     chks t5, t0, TRCheck
-    limm t4, 0
+    limm t4, 0, dataSize=8
     srli t4, t5, 3, dataSize=2
     ldst t1, tsg, [8, t4, t0], dataSize=8
     ld t2, tsg, [8, t4, t0], 8, dataSize=8
@@ -220,7 +220,7 @@ def macroop LLDT_R
 {
     chks reg, t0, InGDTCheck, flags=(EZF,)
     br label("end"), flags=(CEZF,)
-    limm t4, 0
+    limm t4, 0, dataSize=8
     srli t4, reg, 3, dataSize=2
     ldst t1, tsg, [8, t4, t0], dataSize=8
     ld t2, tsg, [8, t4, t0], 8, dataSize=8
@@ -237,7 +237,7 @@ def macroop LLDT_M
     ld t5, seg, sib, disp, dataSize=2
     chks t5, t0, InGDTCheck, flags=(EZF,)
     br label("end"), flags=(CEZF,)
-    limm t4, 0
+    limm t4, 0, dataSize=8
     srli t4, t5, 3, dataSize=2
     ldst t1, tsg, [8, t4, t0], dataSize=8
     ld t2, tsg, [8, t4, t0], 8, dataSize=8
@@ -255,7 +255,7 @@ def macroop LLDT_P
     ld t5, seg, riprel, disp, dataSize=2
     chks t5, t0, InGDTCheck, flags=(EZF,)
     br label("end"), flags=(CEZF,)
-    limm t4, 0
+    limm t4, 0, dataSize=8
     srli t4, t5, 3, dataSize=2
     ldst t1, tsg, [8, t4, t0], dataSize=8
     ld t2, tsg, [8, t4, t0], 8, dataSize=8