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aad6137d | 1 | /// @file\r |
2 | /// IPF specific application register reading functions\r | |
3 | ///\r | |
bb817c56 HT |
4 | /// Copyright (c) 2008, Intel Corporation. All rights reserved.<BR>\r |
5 | /// This program and the accompanying materials\r | |
aad6137d | 6 | /// are licensed and made available under the terms and conditions of the BSD License\r |
7 | /// which accompanies this distribution. The full text of the license may be found at\r | |
c5b16b1b | 8 | /// http://opensource.org/licenses/bsd-license.php.\r |
aad6137d | 9 | ///\r |
10 | /// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | /// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | ///\r | |
13 | ///\r | |
14 | ///\r | |
15 | \r | |
16 | \r | |
17 | \r | |
59e0bb0c | 18 | //---------------------------------------------------------------------------------\r |
19 | //++\r | |
20 | // AsmReadApplicationRegister\r | |
21 | //\r | |
22 | // Reads a 64-bit application register.\r | |
23 | //\r | |
24 | // Reads and returns the application register specified by Index.\r | |
25 | // If Index is invalid then 0xFFFFFFFFFFFFFFFF is returned. This function is only available on IPF.\r | |
26 | //\r | |
27 | // Arguments :\r | |
28 | //\r | |
29 | // On Entry : The index of the application register to read.\r | |
30 | //\r | |
31 | // Return Value: The application register specified by Index.\r | |
32 | //\r | |
33 | //--\r | |
34 | //----------------------------------------------------------------------------------\r | |
35 | .text\r | |
36 | .type AsmReadApplicationRegister, @function\r | |
37 | .proc AsmReadApplicationRegister\r | |
38 | .regstk 1, 0, 0, 0\r | |
39 | \r | |
40 | AsmReadApplicationRegister::\r | |
41 | //\r | |
42 | // ARs are defined in the ranges 0-44 and 64-66 (with some holes).\r | |
43 | // Compact this list by subtracting 16 from the top range.\r | |
44 | // 0-44, 64-66 -> 0-44, 48-50\r | |
45 | //\r | |
46 | mov r15=2\r | |
47 | mov r14=pr // save predicates\r | |
48 | cmp.leu p6,p7=64,in0 // p6 = AR# >= 64\r | |
49 | ;;\r | |
50 | (p7) cmp.leu p7,p0=48,in0 // p7 = 32 <= AR# < 64\r | |
51 | (p6) add in0=-16,in0 // if (AR >= 64) AR# -= 16\r | |
52 | ;;\r | |
53 | (p7) mov r15=0 // if bad range (48-63)\r | |
54 | ;;\r | |
55 | mov ret0=-1 // in case of illegal AR #\r | |
56 | shl r15=r15,in0 // r15 = 0x2 << AR#\r | |
57 | ;;\r | |
58 | mov pr=r15,-1\r | |
59 | ;;\r | |
60 | //\r | |
61 | // At this point the predicates contain a bit field of the\r | |
62 | // AR desired. (The bit is the AR+1, since pr0 is always 1.)\r | |
63 | //\r | |
64 | .pred.rel "mutex",p1,p2,p3,p4,p5,p6,p7,p8,p17,p18,p19,p20,p22,p25,\\r | |
65 | p26,p27,p28,p29,p30,p31,p33,p37,p41,p45,p49,p50,p51\r | |
66 | (p1) mov ret0=ar.k0 // ar0\r | |
67 | (p2) mov ret0=ar.k1 // ar1\r | |
68 | (p3) mov ret0=ar.k2 // ar2\r | |
69 | (p4) mov ret0=ar.k3 // ar3\r | |
70 | (p5) mov ret0=ar.k4 // ar4\r | |
71 | (p6) mov ret0=ar.k5 // ar5\r | |
72 | (p7) mov ret0=ar.k6 // ar6\r | |
73 | (p8) mov ret0=ar.k7 // ar7\r | |
74 | \r | |
75 | (p17) mov ret0=ar.rsc // ar16\r | |
76 | (p18) mov ret0=ar.bsp // ar17\r | |
77 | (p19) mov ret0=ar.bspstore // ar18\r | |
78 | (p20) mov ret0=ar.rnat // ar19\r | |
79 | \r | |
80 | (p22) mov ret0=ar.fcr // ar21 [iA32]\r | |
81 | \r | |
82 | (p25) mov ret0=ar.eflag // ar24 [iA32]\r | |
83 | (p26) mov ret0=ar.csd // ar25 [iA32]\r | |
84 | (p27) mov ret0=ar.ssd // ar26 [iA32]\r | |
85 | (p28) mov ret0=ar.cflg // ar27 [iA32]\r | |
86 | (p29) mov ret0=ar.fsr // ar28 [iA32]\r | |
87 | (p30) mov ret0=ar.fir // ar29 [iA32]\r | |
88 | (p31) mov ret0=ar.fdr // ar30 [iA32]\r | |
89 | \r | |
90 | (p33) mov ret0=ar.ccv // ar32\r | |
91 | \r | |
92 | (p37) mov ret0=ar.unat // ar36\r | |
93 | \r | |
94 | (p41) mov ret0=ar.fpsr // ar40\r | |
95 | \r | |
96 | (p45) mov ret0=ar.itc // ar44\r | |
97 | \r | |
98 | //\r | |
99 | // This is the translated (-16) range.\r | |
100 | //\r | |
101 | (p49) mov ret0=ar.pfs // ar64\r | |
102 | (p50) mov ret0=ar.lc // ar65\r | |
103 | (p51) mov ret0=ar.ec // ar66\r | |
104 | \r | |
105 | // Restore predicates and return.\r | |
106 | \r | |
107 | mov pr=r14,-1\r | |
108 | br.ret.sptk b0\r | |
109 | .endp\r |