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