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-/// @file
-/// IPF specific application register reading functions
-///
-/// Copyright (c) 2008, Intel Corporation. All rights reserved.<BR>
-/// This program and the accompanying materials
-/// are licensed and made available under the terms and conditions of the BSD License
-/// which accompanies this distribution. The full text of the license may be found at
-/// http://opensource.org/licenses/bsd-license.php.
-///
-/// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-/// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-///
-///
-///
-
-
-
-//---------------------------------------------------------------------------------
-//++
-// AsmReadApplicationRegister
-//
-// Reads a 64-bit application register.
-//
-// Reads and returns the application register specified by Index.
-// If Index is invalid then 0xFFFFFFFFFFFFFFFF is returned. This function is only available on IPF.
-//
-// Arguments :
-//
-// On Entry : The index of the application register to read.
-//
-// Return Value: The application register specified by Index.
-//
-//--
-//----------------------------------------------------------------------------------
-.text
-.type AsmReadApplicationRegister, @function
-.proc AsmReadApplicationRegister
-.regstk 1, 0, 0, 0
-
-AsmReadApplicationRegister::
- //
- // ARs are defined in the ranges 0-44 and 64-66 (with some holes).
- // Compact this list by subtracting 16 from the top range.
- // 0-44, 64-66 -> 0-44, 48-50
- //
- mov r15=2
- mov r14=pr // save predicates
- cmp.leu p6,p7=64,in0 // p6 = AR# >= 64
- ;;
- (p7) cmp.leu p7,p0=48,in0 // p7 = 32 <= AR# < 64
- (p6) add in0=-16,in0 // if (AR >= 64) AR# -= 16
- ;;
- (p7) mov r15=0 // if bad range (48-63)
- ;;
- mov ret0=-1 // in case of illegal AR #
- shl r15=r15,in0 // r15 = 0x2 << AR#
- ;;
- mov pr=r15,-1
- ;;
- //
- // At this point the predicates contain a bit field of the
- // AR desired. (The bit is the AR+1, since pr0 is always 1.)
- //
- .pred.rel "mutex",p1,p2,p3,p4,p5,p6,p7,p8,p17,p18,p19,p20,p22,p25,\
- p26,p27,p28,p29,p30,p31,p33,p37,p41,p45,p49,p50,p51
- (p1) mov ret0=ar.k0 // ar0
- (p2) mov ret0=ar.k1 // ar1
- (p3) mov ret0=ar.k2 // ar2
- (p4) mov ret0=ar.k3 // ar3
- (p5) mov ret0=ar.k4 // ar4
- (p6) mov ret0=ar.k5 // ar5
- (p7) mov ret0=ar.k6 // ar6
- (p8) mov ret0=ar.k7 // ar7
-
- (p17) mov ret0=ar.rsc // ar16
- (p18) mov ret0=ar.bsp // ar17
- (p19) mov ret0=ar.bspstore // ar18
- (p20) mov ret0=ar.rnat // ar19
-
- (p22) mov ret0=ar.fcr // ar21 [iA32]
-
- (p25) mov ret0=ar.eflag // ar24 [iA32]
- (p26) mov ret0=ar.csd // ar25 [iA32]
- (p27) mov ret0=ar.ssd // ar26 [iA32]
- (p28) mov ret0=ar.cflg // ar27 [iA32]
- (p29) mov ret0=ar.fsr // ar28 [iA32]
- (p30) mov ret0=ar.fir // ar29 [iA32]
- (p31) mov ret0=ar.fdr // ar30 [iA32]
-
- (p33) mov ret0=ar.ccv // ar32
-
- (p37) mov ret0=ar.unat // ar36
-
- (p41) mov ret0=ar.fpsr // ar40
-
- (p45) mov ret0=ar.itc // ar44
-
- //
- // This is the translated (-16) range.
- //
- (p49) mov ret0=ar.pfs // ar64
- (p50) mov ret0=ar.lc // ar65
- (p51) mov ret0=ar.ec // ar66
-
- // Restore predicates and return.
-
- mov pr=r14,-1
- br.ret.sptk b0
- .endp