1.Fix .global issue in GAS (EdkT207).

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

/// @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