[PATCH 01/26] ArmLib: remove ArmReplaceLiveTranslationEntry() implementation

[Ard Biesheuvel <ard.biesheuvel@linaro.org>]

The function ArmReplaceLiveTranslationEntry() has been moved to
ArmMmuLib, so remove the old implementation from ArmLib.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
 ArmPkg/Library/ArmLib/AArch64/AArch64Support.S           | 60 --------------------
 ArmPkg/Library/ArmMmuLib/AArch64/ArmMmuLibReplaceEntry.S |  4 ++
 2 files changed, 4 insertions(+), 60 deletions(-)

diff --git a/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S b/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S
index 9441f47e30ba..5cef98fd42a0 100644
--- a/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S
+++ b/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S
@@ -488,64 +488,4 @@ ASM_PFX(ArmReadCurrentEL):
   mrs   x0, CurrentEL
   ret
 
-
-  .macro __replace_entry, el
-
-  // disable the MMU
-  mrs   x8, sctlr_el\el
-  bic   x9, x8, #CTRL_M_BIT
-  msr   sctlr_el\el, x9
-  isb
-
-  // write updated entry
-  str   x1, [x0]
-
-  // invalidate again to get rid of stale clean cachelines that may
-  // have been filled speculatively since the last invalidate
-  dmb   sy
-  dc    ivac, x0
-
-  // flush the TLBs
-  .if   \el == 1
-  tlbi  vmalle1
-  .else
-  tlbi  alle\el
-  .endif
-  dsb   sy
-
-  // re-enable the MMU
-  msr   sctlr_el\el, x8
-  isb
-  .endm
-
-//VOID
-//ArmReplaceLiveTranslationEntry (
-//  IN  UINT64  *Entry,
-//  IN  UINT64  Value
-//  )
-ASM_PFX(ArmReplaceLiveTranslationEntry):
-
-  // disable interrupts
-  mrs   x2, daif
-  msr   daifset, #0xf
-  isb
-
-  // clean and invalidate first so that we don't clobber
-  // adjacent entries that are dirty in the caches
-  dc    civac, x0
-  dsb   ish
-
-  EL1_OR_EL2_OR_EL3(x3)
-1:__replace_entry 1
-  b     4f
-2:__replace_entry 2
-  b     4f
-3:__replace_entry 3
-
-4:msr   daif, x2
-  ret
-
-ASM_PFX(ArmReplaceLiveTranslationEntrySize):
-  .long   . - ArmReplaceLiveTranslationEntry
-
 ASM_FUNCTION_REMOVE_IF_UNREFERENCED
diff --git a/ArmPkg/Library/ArmMmuLib/AArch64/ArmMmuLibReplaceEntry.S b/ArmPkg/Library/ArmMmuLib/AArch64/ArmMmuLibReplaceEntry.S
index 7c5d205d940b..3834da7bfedd 100644
--- a/ArmPkg/Library/ArmMmuLib/AArch64/ArmMmuLibReplaceEntry.S
+++ b/ArmPkg/Library/ArmMmuLib/AArch64/ArmMmuLibReplaceEntry.S
@@ -14,6 +14,8 @@
 
 #include <AsmMacroIoLibV8.h>
 
+GCC_ASM_EXPORT(ArmReplaceLiveTranslationEntry)
+
   .set CTRL_M_BIT,      (1 << 0)
 
   .macro __replace_entry, el
@@ -72,5 +74,7 @@ ASM_PFX(ArmReplaceLiveTranslationEntry):
 4:msr   daif, x2
   ret
 
+ASM_GLOBAL ASM_PFX(ArmReplaceLiveTranslationEntrySize)
+
 ASM_PFX(ArmReplaceLiveTranslationEntrySize):
   .long   . - ArmReplaceLiveTranslationEntry
-- 
2.7.4