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-rw-r--r--MdePkg/Include/Ia32/Nasm.inc12
-rw-r--r--MdePkg/Include/X64/Nasm.inc12
2 files changed, 24 insertions, 0 deletions
diff --git a/MdePkg/Include/Ia32/Nasm.inc b/MdePkg/Include/Ia32/Nasm.inc
index 31ce861f1e..fa42f9d3e9 100644
--- a/MdePkg/Include/Ia32/Nasm.inc
+++ b/MdePkg/Include/Ia32/Nasm.inc
@@ -9,6 +9,18 @@
;
;------------------------------------------------------------------------------
+%macro SAVEPREVSSP 0
+ DB 0xF3, 0x0F, 0x01, 0xEA
+%endmacro
+
+%macro CLRSSBSY_EAX 0
+ DB 0x67, 0xF3, 0x0F, 0xAE, 0x30
+%endmacro
+
+%macro RSTORSSP_EAX 0
+ DB 0x67, 0xF3, 0x0F, 0x01, 0x28
+%endmacro
+
%macro SETSSBSY 0
DB 0xF3, 0x0F, 0x01, 0xE8
%endmacro
diff --git a/MdePkg/Include/X64/Nasm.inc b/MdePkg/Include/X64/Nasm.inc
index 42412735ea..e57a803c81 100644
--- a/MdePkg/Include/X64/Nasm.inc
+++ b/MdePkg/Include/X64/Nasm.inc
@@ -9,6 +9,18 @@
;
;------------------------------------------------------------------------------
+%macro SAVEPREVSSP 0
+ DB 0xF3, 0x0F, 0x01, 0xEA
+%endmacro
+
+%macro CLRSSBSY_RAX 0
+ DB 0xF3, 0x0F, 0xAE, 0x30
+%endmacro
+
+%macro RSTORSSP_RAX 0
+ DB 0xF3, 0x0F, 0x01, 0x28
+%endmacro
+
%macro SETSSBSY 0
DB 0xF3, 0x0F, 0x01, 0xE8
%endmacro