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| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2016-09-09 08:17:40 +0100 |
|---|---|---|
| committer | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2016-09-09 13:46:52 +0100 |
| commit | 35071e15748fa54809e485935b631dbe58c1f078 (patch) | |
| tree | 78f39847b89614d777274a78a66427c6cbc05372 | |
| parent | 2d41ea3aed4ea1935fc63df35b834e9626f896df (diff) | |
| download | edk2-35071e15748fa54809e485935b631dbe58c1f078.tar.gz edk2-35071e15748fa54809e485935b631dbe58c1f078.tar.bz2 edk2-35071e15748fa54809e485935b631dbe58c1f078.zip | |
MdePkg/BaseLib AARCH64: terminate stack frame list on stack switch
When switching to the DXE phase stack, set the frame pointer to zero so
that code walking the stack frame will not try to access stack frames
belonging to the old stack.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
| -rw-r--r-- | MdePkg/Library/BaseLib/AArch64/SwitchStack.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/AArch64/SwitchStack.S b/MdePkg/Library/BaseLib/AArch64/SwitchStack.S index 2bce9c998f..c3ac8d7e4d 100644 --- a/MdePkg/Library/BaseLib/AArch64/SwitchStack.S +++ b/MdePkg/Library/BaseLib/AArch64/SwitchStack.S @@ -40,6 +40,7 @@ InternalSwitchStackAsm ( );
**/
ASM_PFX(InternalSwitchStackAsm):
+ mov x29, #0
mov x30, x0
mov sp, x3
mov x0, x1
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