1. Add Assert in SetJump.S

[mirror_edk2.git] / MdePkg / Library / BaseLib / x86Thunk.c

diff --git a/MdePkg/Library/BaseLib/x86Thunk.c b/MdePkg/Library/BaseLib/x86Thunk.c
index d4e37ae59e6671a6cc060f3d527fd8da00ccd8cc..9e69255181fd4a62da0d490fa6a2487524adbb2c 100644 (file)
--- a/MdePkg/Library/BaseLib/x86Thunk.c
+++ b/MdePkg/Library/BaseLib/x86Thunk.c
@@ -95,6 +95,10 @@ AsmGetThunk16Properties (
   ASSERT (ExtraStackSize != NULL);\r
 \r
   *RealModeBufferSize = m16Size;\r
+\r
+  //\r
+  // Extra 4 bytes for return address, and another 4 bytes for mode transition\r
+  //\r
   *ExtraStackSize = sizeof (IA32_DWORD_REGS) + 8;\r
 }\r
 \r