MdePkg/Library/BaseCpuLib/Ipf/CpuFlushTlb.s File Reference
Detailed Description
CpuFlushTlb() function for Itanium-based architecture.
Copyright (c) 2006, Intel Corporation. All rights reserved.
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: CpuFlushTlb.s
.auto
.text
ASM_GLOBAL PalCall
.type PalCall,
.proc CpuFlushTlb
.type CpuFlushTlb,
CpuFlushTlb::
alloc loc0 = ar.pfs, 0, 3, 5, 0
mov out0 = 0
mov out1 = 6
mov out2 = 0
mov out3 = 0
mov loc1 = b0
mov out4 = 0
brl.call.sptk b0 = PalCall
mov loc2 = psr // save PSR
mov ar.pfs = loc0
extr.u r14 = r10, 32, 32 // r14 <- count1
rsm 1 << 14 // Disable interrupts
extr.u r15 = r11, 32, 32 // r15 <- stride1
extr.u r10 = r10, 0, 32 // r10 <- count2
add r10 = -1, r10
extr.u r11 = r11, 0, 32 // r11 <- stride2
br.cond.sptk LoopPredicate
LoopOuter:
mov ar.lc = r10 // LC <- count2
mov ar.ec = r0 // EC <- 0
Loop:
ptc.e r9
add r9 = r11, r9 // r9 += stride2
br.ctop.sptk Loop
add r9 = r15, r9 // r9 += stride1
LoopPredicate:
cmp.ne p6 = r0, r14 // count1 == 0?
add r14 = -1, r14
(p6) br.cond.sptk LoopOuter
mov psr.l = loc2
mov b0 = loc1
br.ret.sptk.many b0
.endp