Fix CYG GCC build fail on retf.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11202 6f19259b-4bc3-4df7-8a09-765794883524

diff --git a/EdkCompatibilityPkg/Compatibility/BootScriptSaveOnS3SaveStateThunk/X64/AsmDispatchExecute.S b/EdkCompatibilityPkg/Compatibility/BootScriptSaveOnS3SaveStateThunk/X64/AsmDispatchExecute.S
index 3dd6bf3996abcce21c34cc1d6c4ef526b0161f9c..167e7d4cc1edb0b5b927fbc950a9b574717c080b 100644 (file)
--- a/EdkCompatibilityPkg/Compatibility/BootScriptSaveOnS3SaveStateThunk/X64/AsmDispatchExecute.S
+++ b/EdkCompatibilityPkg/Compatibility/BootScriptSaveOnS3SaveStateThunk/X64/AsmDispatchExecute.S
@@ -107,7 +107,7 @@ ASM_PFX(AsmExecute32BitCode):
     lea     Compatible(%rip), %rdx # assume address < 4G\r
     orq     %rdx, %rcx\r
     push    %rcx\r
     lea     Compatible(%rip), %rdx # assume address < 4G\r
     orq     %rdx, %rcx\r
     push    %rcx\r

-    retf\r
+    .byte   0xcb                # retf\r

 \r
 Compatible:\r
     # reload DS/ES/SS to make sure they are correct referred to current GDT\r
 \r
 Compatible:\r
     # reload DS/ES/SS to make sure they are correct referred to current GDT\r


@@ -173,7 +173,7 @@ ReturnBack:
     #\r
     # Reload cs register \r
     #   \r
     #\r
     # Reload cs register \r
     #   \r

-    retf\r
+    .byte   0xcb                # retf\r

 ReloadCS:   \r
     #\r
     # Now we're in Long Mode\r
 ReloadCS:   \r
     #\r
     # Now we're in Long Mode\r


@@ -203,7 +203,7 @@ ReloadCS:
     lea     ReturnToLongMode(%rip), %rcx\r
     orq     %r9, %rcx\r
     push    %rcx\r
     lea     ReturnToLongMode(%rip), %rcx\r
     orq     %r9, %rcx\r
     push    %rcx\r

-    retf\r
+    .byte   0xcb                # retf\r

 ReturnToLongMode:\r
     #\r
     # Reload original DS/ES/SS\r
 ReturnToLongMode:\r
     #\r
     # Reload original DS/ES/SS\r