1/// @file
2///   CpuFlushTlb() function for Itanium-based architecture.
3///
4/// Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
5/// This program and the accompanying materials
6/// are licensed and made available under the terms and conditions of the BSD License
7/// which accompanies this distribution.  The full text of the license may be found at
8/// http://opensource.org/licenses/bsd-license.php.
9///
10/// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11/// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
12///
13/// Module Name:  CpuFlushTlb.s
14///
15///
16
17.auto
18.text
19
20ASM_GLOBAL PalCall
21.type   PalCall, @function
22
23.proc   CpuFlushTlb
24.type   CpuFlushTlb, @function
25CpuFlushTlb::
26        alloc               loc0 = ar.pfs, 0, 3, 5, 0
27        mov                 out0 = 0
28        mov                 out1 = 6
29        mov                 out2 = 0
30        mov                 out3 = 0
31        mov                 loc1 = b0
32        mov                 out4 = 0
33        brl.call.sptk       b0  = PalCall
34        mov                 loc2 = psr              // save PSR
35        mov                 ar.pfs = loc0
36        extr.u              r14 = r10, 32, 32       // r14 <- count1
37        rsm                 1 << 14                 // Disable interrupts
38        extr.u              r15 = r11, 32, 32       // r15 <- stride1
39        extr.u              r10 = r10, 0, 32        // r10 <- count2
40        add                 r10 = -1, r10
41        extr.u              r11 = r11, 0, 32        // r11 <- stride2
42        br.cond.sptk        LoopPredicate
43LoopOuter:
44        mov                 ar.lc = r10             // LC <- count2
45        mov                 ar.ec = r0              // EC <- 0
46Loop:
47        ptc.e               r9
48        add                 r9 = r11, r9            // r9 += stride2
49        br.ctop.sptk        Loop
50        add                 r9 = r15, r9            // r9 += stride1
51LoopPredicate:
52        cmp.ne              p6 = r0, r14            // count1 == 0?
53        add                 r14 = -1, r14
54(p6)    br.cond.sptk        LoopOuter
55        mov                 psr.l = loc2
56        mov                 b0  = loc1
57        br.ret.sptk.many    b0
58.endp
59