diff --git a/lib/m2/x86/x86_defs.M1 b/lib/m2/x86/x86_defs.M1
index 9d7461fa..c87d4c4d 100644
--- a/lib/m2/x86/x86_defs.M1
+++ b/lib/m2/x86/x86_defs.M1
@@ -34,6 +34,7 @@ DEFINE COPY_edi_to_ebp 89fd
 DEFINE COPY_esp_to_ebp 89E5
 DEFINE COPY_esp_to_ecx 89E1
 DEFINE COPY_esp_to_edi 89E7
+DEFINE CDTQ 99
 DEFINE DIVIDE_eax_by_ebx_into_eax F7FB
 DEFINE DIVIDES_eax_by_ebx_into_eax F7F3
 DEFINE INT_80 CD80
@@ -51,6 +52,7 @@ DEFINE LOAD_EFFECTIVE_ADDRESS_edx 8D9424
 DEFINE LOAD_ESP_IMMEDIATE_into_eax 8B8424
 DEFINE LOAD_IMMEDIATE_eax B8
 DEFINE LOAD_IMMEDIATE_ebx BB
+DEFINE LOAD_IMMEDIATE_ecx B9
 DEFINE LOAD_IMMEDIATE_edx BA
 DEFINE LOAD_INTEGER 8B00
 DEFINE LOAD_INTEGER_ebx 8B1B
@@ -64,7 +66,7 @@ DEFINE MOVE_ecx_to_eax 89C8
 DEFINE MOVE_edx_to_eax 89D0
 DEFINE MULTIPLY_eax_by_ebx_into_eax F7EB
 DEFINE MULTIPLYS_eax_by_ebx_into_eax F7E3
-DEFINE NOP 00000000
+DEFINE NULL 00000000
 DEFINE NOT_eax F7D0
 DEFINE OR_eax_ebx 09D8
 DEFINE POP_eax 58
@@ -77,8 +79,14 @@ DEFINE PUSH_ebp 55
 DEFINE PUSH_edi 57
 DEFINE RETURN C3
 DEFINE SAL_eax_Immediate8 C1E0
-DEFINE SAL_eax_cl D3E0
+DEFINE SHL_eax_cl D3E0
+DEFINE SAL_eax_cl D3F0
+DEFINE SHR_eax_cl D3E8
 DEFINE SAR_eax_cl D3F8
+DEFINE SETA 0F97C0
+DEFINE SETAE 0F93C0
+DEFINE SETB 0F92C0
+DEFINE SETBE 0F96C0
 DEFINE SETE 0F94C0
 DEFINE SETLE 0F9EC0
 DEFINE SETL 0F9CC0