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| 1 | //++ |
1 | //++ |
| 2 | // Copyright (c) 1996-99 Intel Corp. |
2 | // Copyright (c) 1996-99 Intel Corp. |
| 3 | // All Rights Reserved |
3 | // All Rights Reserved |
| 4 | // |
4 | // |
| 5 | // INTEL CORPORATION PROPRIETARY INFORMATION |
5 | // INTEL CORPORATION PROPRIETARY INFORMATION |
| 6 | // |
6 | // |
| 7 | // This software is supplied under the terms of a license |
7 | // This software is supplied under the terms of a license |
| 8 | // agreement or nondisclosure agreement with Intel Corpo- |
8 | // agreement or nondisclosure agreement with Intel Corpo- |
| 9 | // ration and may not be copied or disclosed except in |
9 | // ration and may not be copied or disclosed except in |
| 10 | // accordance with the terms of that agreement. |
10 | // accordance with the terms of that agreement. |
| 11 | // |
11 | // |
| 12 | // |
12 | // |
| 13 | // |
13 | // |
| 14 | // Module Name: |
14 | // Module Name: |
| 15 | // |
15 | // |
| 16 | // palproc.s |
16 | // palproc.s |
| 17 | // |
17 | // |
| 18 | // Abstract: |
18 | // Abstract: |
| 19 | // |
19 | // |
| 20 | // Contains an implementation for making PAL PROC calls on |
20 | // Contains an implementation for making PAL PROC calls on |
| 21 | // IA-64 architecture. |
21 | // IA-64 architecture. |
| 22 | // |
22 | // |
| 23 | // |
23 | // |
| 24 | // |
24 | // |
| 25 | // Revision History: |
25 | // Revision History: |
| 26 | // |
26 | // |
| 27 | //-- |
27 | //-- |
| 28 | 28 | ||
| 29 | .file "palproc.s" |
29 | .file "palproc.s" |
| 30 | 30 | ||
| 31 | #include "palproc.h" |
31 | #include "palproc.h" |
| 32 | 32 | ||
| 33 | 33 | ||
| 34 | //----------------------------------------------------------------------------- |
34 | //----------------------------------------------------------------------------- |
| 35 | //++ |
35 | //++ |
| 36 | // MakeStaticPALCall |
36 | // MakeStaticPALCall |
| 37 | // |
37 | // |
| 38 | // This routine is called whenever an architected static calling convention |
38 | // This routine is called whenever an architected static calling convention |
| 39 | // based PAL call is to be made. This call does use RSE actually, but our policy |
39 | // based PAL call is to be made. This call does use RSE actually, but our policy |
| 40 | // in making static PAL calls before memory is available is to make sure that |
40 | // in making static PAL calls before memory is available is to make sure that |
| 41 | // we do not nest too deep and allocate beyond 96 banked registers. In other |
41 | // we do not nest too deep and allocate beyond 96 banked registers. In other |
| 42 | // words we carefully code calls and control flow before memory is available. |
42 | // words we carefully code calls and control flow before memory is available. |
| 43 | // |
43 | // |
| 44 | // Arguments : All parameters set up to do static PAL call. |
44 | // Arguments : All parameters set up to do static PAL call. |
| 45 | // |
45 | // |
| 46 | // On Entry : |
46 | // On Entry : |
| 47 | // |
47 | // |
| 48 | // Return Value: |
48 | // Return Value: |
| 49 | // |
49 | // |
| 50 | // As per static calling conventions. |
50 | // As per static calling conventions. |
| 51 | // |
51 | // |
| 52 | //-- |
52 | //-- |
| 53 | //--------------------------------------------------------------------------- |
53 | //--------------------------------------------------------------------------- |
| 54 | PROCEDURE_ENTRY(MakeStaticPALCall) |
54 | PROCEDURE_ENTRY(MakeStaticPALCall) |
| 55 | 55 | ||
| 56 | NESTED_SETUP (5,8,0,0) |
56 | NESTED_SETUP (5,8,0,0) |
| 57 | mov loc3 = b5 |
57 | mov loc3 = b5 |
| 58 | mov loc4 = r2 |
58 | mov loc4 = r2 |
| 59 | mov loc7 = r1;; |
59 | mov loc7 = r1;; |
| 60 | 60 | ||
| 61 | movl loc6 = PAL_MC_CLEAR_LOG |
61 | movl loc6 = PAL_MC_CLEAR_LOG |
| 62 | mov r2 = psr;; |
62 | mov r2 = psr;; |
| 63 | mov loc5 = r2 |
63 | mov loc5 = r2 |
| 64 | 64 | ||
| 65 | cmp.eq p6,p7 = r28,loc6;; |
65 | cmp.eq p6,p7 = r28,loc6;; |
| 66 | (p7)movl loc6 = PAL_MC_DYNAMIC_STATE;; |
66 | (p7)movl loc6 = PAL_MC_DYNAMIC_STATE;; |
| 67 | (p7)cmp.eq p6,p7 = r28,loc6;; |
67 | (p7)cmp.eq p6,p7 = r28,loc6;; |
| 68 | 68 | ||
| 69 | (p7)movl loc6 = PAL_MC_ERROR_INFO;; |
69 | (p7)movl loc6 = PAL_MC_ERROR_INFO;; |
| 70 | (p7)cmp.eq p6,p7 = r28,loc6;; |
70 | (p7)cmp.eq p6,p7 = r28,loc6;; |
| 71 | 71 | ||
| 72 | (p7)movl loc6 = PAL_MC_RESUME;; |
72 | (p7)movl loc6 = PAL_MC_RESUME;; |
| 73 | (p7)cmp.eq p6,p7 = r28,loc6 |
73 | (p7)cmp.eq p6,p7 = r28,loc6 |
| 74 | 74 | ||
| 75 | mov loc6 = 0x1;; |
75 | mov loc6 = 0x1;; |
| 76 | (p7)dep r2 = loc6,r2,13,1;; // psr.ic = 1 |
76 | (p7)dep r2 = loc6,r2,13,1;; // psr.ic = 1 |
| 77 | 77 | ||
| 78 | // p6 will be true, if it is one of the MCHK calls. There has been lots of debate |
78 | // p6 will be true, if it is one of the MCHK calls. There has been lots of debate |
| 79 | // on psr.ic for these values. For now, do not do any thing to psr.ic |
79 | // on psr.ic for these values. For now, do not do any thing to psr.ic |
| 80 | 80 | ||
| 81 | // (p6)dep r2 = r0,r2,13,1;; // psr.ic = 0 |
81 | // (p6)dep r2 = r0,r2,13,1;; // psr.ic = 0 |
| 82 | dep r2 = r0,r2,14,1;; // psr.i = 0 |
82 | dep r2 = r0,r2,14,1;; // psr.i = 0 |
| 83 | 83 | ||
| 84 | mov psr.l = r2 |
84 | mov psr.l = r2 |
| 85 | srlz.d;; // Needs data serailization. |
85 | srlz.d;; // Needs data serailization. |
| 86 | srlz.i;; // Needs instruction serailization. |
86 | srlz.i;; // Needs instruction serailization. |
| 87 | 87 | ||
| 88 | StaticGetPALLocalIP: |
88 | StaticGetPALLocalIP: |
| 89 | mov loc2 = ip;; |
89 | mov loc2 = ip;; |
| 90 | add loc2 = StaticComeBackFromPALCall - StaticGetPALLocalIP,loc2;; |
90 | add loc2 = StaticComeBackFromPALCall - StaticGetPALLocalIP,loc2;; |
| 91 | mov b0 = loc2 // return address after Pal call |
91 | mov b0 = loc2 // return address after Pal call |
| 92 | mov r28 = in1 // get the input parameters to PAL call |
92 | mov r28 = in1 // get the input parameters to PAL call |
| 93 | mov r29 = in2 |
93 | mov r29 = in2 |
| 94 | mov r30 = in3;; |
94 | mov r30 = in3;; |
| 95 | mov r31 = in4 |
95 | mov r31 = in4 |
| 96 | mov b5 = in0;; // get the PalProcEntrypt from input |
96 | mov b5 = in0;; // get the PalProcEntrypt from input |
| 97 | br.sptk b5 // Take the plunge. |
97 | br.sptk b5 // Take the plunge. |
| 98 | 98 | ||
| 99 | StaticComeBackFromPALCall: |
99 | StaticComeBackFromPALCall: |
| 100 | 100 | ||
| 101 | mov psr.l = loc5;; |
101 | mov psr.l = loc5;; |
| 102 | srlz.d;; // Needs data serailization. |
102 | srlz.d;; // Needs data serailization. |
| 103 | srlz.i;; // Needs instruction serailization. |
103 | srlz.i;; // Needs instruction serailization. |
| 104 | 104 | ||
| 105 | mov b5 = loc3 |
105 | mov b5 = loc3 |
| 106 | mov r2 = loc4 |
106 | mov r2 = loc4 |
| 107 | mov r1 = loc7 |
107 | mov r1 = loc7 |
| 108 | 108 | ||
| 109 | NESTED_RETURN |
109 | NESTED_RETURN |
| 110 | 110 | ||
| 111 | PROCEDURE_EXIT(MakeStaticPALCall) |
111 | PROCEDURE_EXIT(MakeStaticPALCall) |
| 112 | 112 | ||
| 113 | 113 | ||
| 114 | //----------------------------------------------------------------------------- |
114 | //----------------------------------------------------------------------------- |
| 115 | //++ |
115 | //++ |
| 116 | // MakeStackedPALCall |
116 | // MakeStackedPALCall |
| 117 | // |
117 | // |
| 118 | // This routine is called whenever an architected stacked calling convention |
118 | // This routine is called whenever an architected stacked calling convention |
| 119 | // based PAL call is to be made. This call is made after memory is available. |
119 | // based PAL call is to be made. This call is made after memory is available. |
| 120 | // Although stacked calls could be made directly from 'C', there is a PAL |
120 | // Although stacked calls could be made directly from 'C', there is a PAL |
| 121 | // requirement which forces the index to be in GR28 and hence this stub is |
121 | // requirement which forces the index to be in GR28 and hence this stub is |
| 122 | // needed |
122 | // needed |
| 123 | // |
123 | // |
| 124 | // Arguments : All parameters set up to do stacted PAL call. |
124 | // Arguments : All parameters set up to do stacted PAL call. |
| 125 | // |
125 | // |
| 126 | // On Entry : |
126 | // On Entry : |
| 127 | // in0: PAL_PROC entrypoint |
127 | // in0: PAL_PROC entrypoint |
| 128 | // in1-in4 : PAL_PROC arguments |
128 | // in1-in4 : PAL_PROC arguments |
| 129 | // |
129 | // |
| 130 | // Return Value: |
130 | // Return Value: |
| 131 | // |
131 | // |
| 132 | // As per stacked calling conventions. |
132 | // As per stacked calling conventions. |
| 133 | // |
133 | // |
| 134 | //-- |
134 | //-- |
| 135 | //--------------------------------------------------------------------------- |
135 | //--------------------------------------------------------------------------- |
| 136 | PROCEDURE_ENTRY(MakeStackedPALCall) |
136 | PROCEDURE_ENTRY(MakeStackedPALCall) |
| 137 | 137 | ||
| 138 | NESTED_SETUP (5,8,4,0) |
138 | NESTED_SETUP (5,8,4,0) |
| 139 | mov loc3 = b5 |
139 | mov loc3 = b5 |
| 140 | mov loc4 = r2 |
140 | mov loc4 = r2 |
| 141 | mov loc7 = r1 |
141 | mov loc7 = r1 |
| 142 | mov r2 = psr;; |
142 | mov r2 = psr;; |
| 143 | mov loc5 = r2;; |
143 | mov loc5 = r2;; |
| 144 | dep r2 = r0,r2,14,1;; // psr.i = 0 |
144 | dep r2 = r0,r2,14,1;; // psr.i = 0 |
| 145 | mov psr.l = r2 |
145 | mov psr.l = r2 |
| 146 | srlz.d;; // Needs data serailization. |
146 | srlz.d;; // Needs data serailization. |
| 147 | srlz.i;; // Needs instruction serailization. |
147 | srlz.i;; // Needs instruction serailization. |
| 148 | 148 | ||
| 149 | StackedGetPALLocalIP: |
149 | StackedGetPALLocalIP: |
| 150 | mov r28 = in1 // get the input parameters to PAL call |
150 | mov r28 = in1 // get the input parameters to PAL call |
| 151 | mov out0 = in1 |
151 | mov out0 = in1 |
| 152 | mov out1 = in2;; |
152 | mov out1 = in2;; |
| 153 | mov out2 = in3 |
153 | mov out2 = in3 |
| 154 | mov out3 = in4 |
154 | mov out3 = in4 |
| 155 | mov b5 = in0;; // get the PalProcEntrypt from input |
155 | mov b5 = in0;; // get the PalProcEntrypt from input |
| 156 | br.call.dpnt b0=b5;; // Take the plunge. |
156 | br.call.dpnt b0=b5;; // Take the plunge. |
| 157 | 157 | ||
| 158 | StackedComeBackFromPALCall: |
158 | StackedComeBackFromPALCall: |
| 159 | 159 | ||
| 160 | mov psr.l = loc5;; |
160 | mov psr.l = loc5;; |
| 161 | srlz.d;; // Needs data serailization. |
161 | srlz.d;; // Needs data serailization. |
| 162 | srlz.i;; // Needs instruction serailization. |
162 | srlz.i;; // Needs instruction serailization. |
| 163 | mov b5 = loc3 |
163 | mov b5 = loc3 |
| 164 | mov r2 = loc4 |
164 | mov r2 = loc4 |
| 165 | mov r1 = loc7 |
165 | mov r1 = loc7 |
| 166 | 166 | ||
| 167 | NESTED_RETURN |
167 | NESTED_RETURN |
| 168 | 168 | ||
| 169 | PROCEDURE_EXIT(MakeStackedPALCall) |
169 | PROCEDURE_EXIT(MakeStackedPALCall) |
| 170 | 170 | ||
| 171 | 171 | ||