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| Rev | Author | Line No. | Line |
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| 2726 | vana | 1 | //++ |
| 2 | // Copyright (c) 1996-99 Intel Corp. |
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| 3 | // All Rights Reserved |
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| 4 | // |
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| 5 | // INTEL CORPORATION PROPRIETARY INFORMATION |
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| 6 | // |
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| 7 | // This software is supplied under the terms of a license |
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| 8 | // agreement or nondisclosure agreement with Intel Corpo- |
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| 9 | // ration and may not be copied or disclosed except in |
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| 10 | // accordance with the terms of that agreement. |
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| 11 | // |
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| 12 | // |
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| 13 | // |
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| 14 | // Module Name: |
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| 15 | // |
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| 16 | // palproc.s |
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| 17 | // |
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| 18 | // Abstract: |
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| 19 | // |
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| 20 | // Contains an implementation for making PAL PROC calls on |
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| 21 | // IA-64 architecture. |
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| 22 | // |
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| 23 | // |
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| 24 | // |
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| 25 | // Revision History: |
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| 26 | // |
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| 27 | //-- |
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| 28 | |||
| 29 | .file "palproc.s" |
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| 30 | |||
| 31 | #include "palproc.h" |
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| 32 | |||
| 33 | |||
| 34 | //----------------------------------------------------------------------------- |
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| 35 | //++ |
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| 36 | // MakeStaticPALCall |
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| 37 | // |
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| 38 | // This routine is called whenever an architected static calling convention |
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| 39 | // based PAL call is to be made. This call does use RSE actually, but our policy |
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| 40 | // in making static PAL calls before memory is available is to make sure that |
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| 41 | // we do not nest too deep and allocate beyond 96 banked registers. In other |
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| 42 | // words we carefully code calls and control flow before memory is available. |
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| 43 | // |
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| 44 | // Arguments : All parameters set up to do static PAL call. |
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| 45 | // |
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| 46 | // On Entry : |
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| 47 | // |
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| 48 | // Return Value: |
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| 49 | // |
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| 50 | // As per static calling conventions. |
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| 51 | // |
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| 52 | //-- |
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| 53 | //--------------------------------------------------------------------------- |
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| 54 | PROCEDURE_ENTRY(MakeStaticPALCall) |
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| 55 | |||
| 56 | NESTED_SETUP (5,8,0,0) |
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| 57 | mov loc3 = b5 |
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| 58 | mov loc4 = r2 |
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| 59 | mov loc7 = r1;; |
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| 60 | |||
| 61 | movl loc6 = PAL_MC_CLEAR_LOG |
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| 62 | mov r2 = psr;; |
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| 63 | mov loc5 = r2 |
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| 64 | |||
| 65 | cmp.eq p6,p7 = r28,loc6;; |
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| 66 | (p7)movl loc6 = PAL_MC_DYNAMIC_STATE;; |
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| 67 | (p7)cmp.eq p6,p7 = r28,loc6;; |
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| 68 | |||
| 69 | (p7)movl loc6 = PAL_MC_ERROR_INFO;; |
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| 70 | (p7)cmp.eq p6,p7 = r28,loc6;; |
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| 71 | |||
| 72 | (p7)movl loc6 = PAL_MC_RESUME;; |
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| 73 | (p7)cmp.eq p6,p7 = r28,loc6 |
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| 74 | |||
| 75 | mov loc6 = 0x1;; |
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| 76 | (p7)dep r2 = loc6,r2,13,1;; // psr.ic = 1 |
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| 77 | |||
| 78 | // p6 will be true, if it is one of the MCHK calls. There has been lots of debate |
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| 79 | // on psr.ic for these values. For now, do not do any thing to psr.ic |
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| 80 | |||
| 81 | // (p6)dep r2 = r0,r2,13,1;; // psr.ic = 0 |
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| 82 | dep r2 = r0,r2,14,1;; // psr.i = 0 |
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| 83 | |||
| 84 | mov psr.l = r2 |
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| 85 | srlz.d;; // Needs data serailization. |
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| 86 | srlz.i;; // Needs instruction serailization. |
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| 87 | |||
| 88 | StaticGetPALLocalIP: |
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| 89 | mov loc2 = ip;; |
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| 90 | add loc2 = StaticComeBackFromPALCall - StaticGetPALLocalIP,loc2;; |
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| 91 | mov b0 = loc2 // return address after Pal call |
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| 92 | mov r28 = in1 // get the input parameters to PAL call |
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| 93 | mov r29 = in2 |
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| 94 | mov r30 = in3;; |
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| 95 | mov r31 = in4 |
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| 96 | mov b5 = in0;; // get the PalProcEntrypt from input |
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| 97 | br.sptk b5 // Take the plunge. |
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| 98 | |||
| 99 | StaticComeBackFromPALCall: |
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| 100 | |||
| 101 | mov psr.l = loc5;; |
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| 102 | srlz.d;; // Needs data serailization. |
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| 103 | srlz.i;; // Needs instruction serailization. |
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| 104 | |||
| 105 | mov b5 = loc3 |
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| 106 | mov r2 = loc4 |
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| 107 | mov r1 = loc7 |
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| 108 | |||
| 109 | NESTED_RETURN |
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| 110 | |||
| 111 | PROCEDURE_EXIT(MakeStaticPALCall) |
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| 112 | |||
| 113 | |||
| 114 | //----------------------------------------------------------------------------- |
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| 115 | //++ |
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| 116 | // MakeStackedPALCall |
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| 117 | // |
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| 118 | // This routine is called whenever an architected stacked calling convention |
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| 119 | // based PAL call is to be made. This call is made after memory is available. |
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| 120 | // Although stacked calls could be made directly from 'C', there is a PAL |
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| 121 | // requirement which forces the index to be in GR28 and hence this stub is |
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| 122 | // needed |
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| 123 | // |
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| 124 | // Arguments : All parameters set up to do stacted PAL call. |
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| 125 | // |
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| 126 | // On Entry : |
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| 127 | // in0: PAL_PROC entrypoint |
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| 128 | // in1-in4 : PAL_PROC arguments |
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| 129 | // |
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| 130 | // Return Value: |
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| 131 | // |
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| 132 | // As per stacked calling conventions. |
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| 133 | // |
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| 134 | //-- |
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| 135 | //--------------------------------------------------------------------------- |
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| 136 | PROCEDURE_ENTRY(MakeStackedPALCall) |
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| 137 | |||
| 138 | NESTED_SETUP (5,8,4,0) |
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| 139 | mov loc3 = b5 |
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| 140 | mov loc4 = r2 |
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| 141 | mov loc7 = r1 |
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| 142 | mov r2 = psr;; |
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| 143 | mov loc5 = r2;; |
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| 144 | dep r2 = r0,r2,14,1;; // psr.i = 0 |
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| 145 | mov psr.l = r2 |
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| 146 | srlz.d;; // Needs data serailization. |
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| 147 | srlz.i;; // Needs instruction serailization. |
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| 148 | |||
| 149 | StackedGetPALLocalIP: |
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| 150 | mov r28 = in1 // get the input parameters to PAL call |
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| 151 | mov out0 = in1 |
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| 152 | mov out1 = in2;; |
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| 153 | mov out2 = in3 |
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| 154 | mov out3 = in4 |
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| 155 | mov b5 = in0;; // get the PalProcEntrypt from input |
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| 156 | br.call.dpnt b0=b5;; // Take the plunge. |
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| 157 | |||
| 158 | StackedComeBackFromPALCall: |
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| 159 | |||
| 160 | mov psr.l = loc5;; |
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| 161 | srlz.d;; // Needs data serailization. |
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| 162 | srlz.i;; // Needs instruction serailization. |
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| 163 | mov b5 = loc3 |
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| 164 | mov r2 = loc4 |
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| 165 | mov r1 = loc7 |
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| 166 | |||
| 167 | NESTED_RETURN |
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| 168 | |||
| 169 | PROCEDURE_EXIT(MakeStackedPALCall) |
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| 170 |