diff options
Diffstat (limited to 'MdePkg/Library/BaseLib/Ipf/SwitchStack.s')
| -rw-r--r-- | MdePkg/Library/BaseLib/Ipf/SwitchStack.s | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/Ipf/SwitchStack.s b/MdePkg/Library/BaseLib/Ipf/SwitchStack.s new file mode 100644 index 0000000000000..04394e71b6e99 --- /dev/null +++ b/MdePkg/Library/BaseLib/Ipf/SwitchStack.s @@ -0,0 +1,52 @@ +/// @file +/// IPF specific SwitchStack() function +/// +/// Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR> +/// This program and the accompanying materials +/// are licensed and made available under the terms and conditions of the BSD License +/// which accompanies this distribution. The full text of the license may be found at +/// http://opensource.org/licenses/bsd-license.php. +/// +/// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +/// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +/// +/// Module Name: SwitchStack.s +/// +/// + +.auto +.text + +.proc AsmSwitchStackAndBackingStore +.type AsmSwitchStackAndBackingStore, @function +.regstk 5, 0, 0, 0 +AsmSwitchStackAndBackingStore:: + mov r14 = ar.rsc + movl r2 = ~((((1 << 14) - 1) << 16) | 3) + + mov r17 = in1 + mov r18 = in2 + and r2 = r14, r2 + + flushrs + + mov ar.rsc = r2 + mov sp = in3 + mov r19 = in4 + + ld8.nt1 r16 = [in0], 8 + ld8.nta gp = [in0] + mov r3 = -1 + + loadrs + mov ar.bspstore = r19 + mov b7 = r16 + + alloc r2 = ar.pfs, 0, 0, 2, 0 + mov out0 = r17 + mov out1 = r18 + + mov ar.rnat = r3 + mov ar.rsc = r14 + br.call.sptk.many b0 = b7 +.endp AsmSwitchStackAndBackingStore |