Moved the MdePkg to OldMdePkg so that new code in MdePkg does not break existing...

[mirror_edk2.git] / OldMdePkg / Library / BaseLib / Ipf / CpuFlushTlb.s

diff --git a/OldMdePkg/Library/BaseLib/Ipf/CpuFlushTlb.s b/OldMdePkg/Library/BaseLib/Ipf/CpuFlushTlb.s
new file mode 100644 (file)
index 0000000..520c51f
--- /dev/null
+++ b/OldMdePkg/Library/BaseLib/Ipf/CpuFlushTlb.s
@@ -0,0 +1,58 @@
+/// @file\r
+///   CpuFlushTlb() function for Itanium-based architecture.\r
+///\r
+/// Copyright (c) 2006, Intel Corporation\r
+/// All rights reserved. This program and the accompanying materials\r
+/// are licensed and made available under the terms and conditions of the BSD License\r
+/// which accompanies this distribution.  The full text of the license may be found at\r
+/// http://opensource.org/licenses/bsd-license.php\r
+///\r
+/// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+/// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+///\r
+/// Module Name:  CpuFlushTlb.s\r
+///\r
+///\r
+\r
+.auto\r
+.text\r
+\r
+.globl PalCallStatic\r
+.type   PalCallStatic, @function\r
+\r
+.proc   CpuFlushTlb\r
+.type   CpuFlushTlb, @function\r
+CpuFlushTlb::\r
+        alloc               loc0 = ar.pfs, 0, 3, 5, 0\r
+        mov                 out0 = 0\r
+        mov                 out1 = 6\r
+        mov                 out2 = 0\r
+        mov                 out3 = 0\r
+        mov                 loc1 = b0\r
+        mov                 out4 = 0\r
+        brl.call.sptk       b0  = PalCallStatic\r
+        mov                 loc2 = psr              // save PSR\r
+        mov                 ar.pfs = loc0\r
+        extr.u              r14 = r10, 32, 32       // r14 <- count1\r
+        rsm                 1 << 14                 // Disable interrupts\r
+        extr.u              r15 = r11, 32, 32       // r15 <- stride1\r
+        extr.u              r10 = r10, 0, 32        // r10 <- count2\r
+        add                 r10 = -1, r10\r
+        extr.u              r11 = r11, 0, 32        // r11 <- stride2\r
+        br.cond.sptk        LoopPredicate\r
+LoopOuter:\r
+        mov                 ar.lc = r10             // LC <- count2\r
+        mov                 ar.ec = r0              // EC <- 0\r
+Loop:\r
+        ptc.e               r9\r
+        add                 r9 = r11, r9            // r9 += stride2\r
+        br.ctop.sptk        Loop\r
+        add                 r9 = r15, r9            // r9 += stride1\r
+LoopPredicate:\r
+        cmp.ne              p6 = r0, r14            // count1 == 0?\r
+        add                 r14 = -1, r14\r
+(p6)    br.cond.sptk        LoopOuter\r
+        mov                 psr.l = loc2\r
+        mov                 b0  = loc1\r
+        br.ret.sptk.many    b0\r
+.endp\r