EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ipf/CpuFlushTlb.s

   1 /// Copyright (c) 2004, Intel Corporation
   2 /// All rights reserved. This program and the accompanying materials
   3 /// are licensed and made available under the terms and conditions of the BSD License
   4 /// which accompanies this distribution.  The full text of the license may be found at
   5 /// http://opensource.org/licenses/bsd-license.php
   6 ///
   7 /// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
   8 /// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
   9 ///
  10 /// Module Name:
  11 ///
  12 ///   CpuFlushTlb.s
  13 ///
  14 /// Abstract:
  15 ///
  16 ///
  17
  18 .auto
  19 .text
  20
  21 .globl PalCallStatic
  22 .type   PalCallStatic, @function
  23
  24 .proc   CpuFlushTlb
  25 .type   CpuFlushTlb, @function
  26 CpuFlushTlb::
  27         alloc               loc0 = ar.pfs, 0, 3, 5, 0
  28         mov                 out0 = 0
  29         mov                 out1 = 6
  30         mov                 out2 = 0
  31         mov                 out3 = 0
  32         mov                 loc1 = b0
  33         mov                 out4 = 0
  34         brl.call.sptk       b0  = PalCallStatic
  35         mov                 loc2 = psr              // save PSR
  36         mov                 ar.pfs = loc0
  37         extr.u              r14 = r10, 32, 32       // r14 <- count1
  38         rsm                 1 << 14                 // Disable interrupts
  39         extr.u              r15 = r11, 32, 32       // r15 <- stride1
  40         extr.u              r10 = r10, 0, 32        // r10 <- count2
  41         add                 r10 = -1, r10
  42         extr.u              r11 = r11, 0, 32        // r11 <- stride2
  43         br.cond.sptk        LoopPredicate
  44 LoopOuter:
  45         mov                 ar.lc = r10             // LC <- count2
  46         mov                 ar.ec = r0              // EC <- 0
  47 Loop:
  48         ptc.e               r9
  49         add                 r9 = r11, r9            // r9 += stride2
  50         br.ctop.sptk        Loop
  51         add                 r9 = r15, r9            // r9 += stride1
  52 LoopPredicate:
  53         cmp.ne              p6 = r0, r14            // count1 == 0?
  54         add                 r14 = -1, r14
  55 (p6)    br.cond.sptk        LoopOuter
  56         mov                 psr.l = loc2
  57         mov                 b0  = loc1
  58         br.ret.sptk.many    b0
  59 .endp