diff options
Diffstat (limited to 'UnixPkg/Sec/X64/SwitchStack.S')
| -rw-r--r-- | UnixPkg/Sec/X64/SwitchStack.S | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/UnixPkg/Sec/X64/SwitchStack.S b/UnixPkg/Sec/X64/SwitchStack.S index acc3df232c..9f62e71cef 100644 --- a/UnixPkg/Sec/X64/SwitchStack.S +++ b/UnixPkg/Sec/X64/SwitchStack.S @@ -22,35 +22,35 @@ # Routine Description:
#
# Routine for switching stacks with 3 parameters EFI ABI
+# Convert UNIX to EFI ABI
#
# Arguments:
#
-# (rcx) EntryPoint - Entry point with new stack.
-# (rdx) Context1 - Parameter1 for entry point.
-# (r8) Context2 - Parameter2 for entry point.
-# (r9) Context3 - Parameter3 for entry point.
-# (rsp)0x20 NewStack - The pointer to new stack.
+# (rdi) EntryPoint - Entry point with new stack.
+# (rsi) Context1 - Parameter1 for entry point. (rcx)
+# (rdx) Context2 - Parameter2 for entry point. (rdx)
+# (rcx) Context3 - Parameter3 for entry point. (r8)
+# (r8) NewStack - The pointer to new stack.
#
# Returns:
#
# None
#
#------------------------------------------------------------------------------
-ASM_GLOBAL ASM_PFX(MsftPeiSwitchStacks)
-ASM_PFX(MsftPeiSwitchStacks):
- mov %rcx, %rax
- mov %rdx, %rcx
- mov %r8, %rdx
- mov %r9, %r8
+ASM_GLOBAL ASM_PFX(GasketPeiSwitchStacks)
+ASM_PFX(GasketPeiSwitchStacks):
+// movq %rdx, %rdx
+ movq %r8, %rsp
- # get new stack from the stack
- mov 0x20(%rsp), %rsp # is this off by 8?
+ movq %rdi, %rax
+ movq %rsi, %rcx
+ movq %rcx, %r8
#
# Reserve space for register parameters (rcx, rdx, r8 & r9) on the stack,
# in case the callee wishes to spill them.
#
- lea -0x20(%rsp), %rsp
+ subq 40, %rsp // 32-byte shadow space plus alignment pad
call *%rax
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