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30 | 30 | ||
31 | .global context_save |
31 | .global context_save |
32 | .global context_restore |
32 | .global context_restore |
33 | 33 | ||
34 | context_save: |
34 | context_save: |
- | 35 | alloc loc0 = ar.pfs, 1, 2, 0, 0 |
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- | 36 | ||
- | 37 | /* |
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- | 38 | * TODO: save the rest of the context registers. |
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- | 39 | */ |
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- | 40 | ||
- | 41 | st8 [in0] = r1, 8 ;; |
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- | 42 | st8 [in0] = r2, 8 ;; |
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- | 43 | st8 [in0] = r3, 8 ;; |
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- | 44 | st8 [in0] = r4, 8 ;; |
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- | 45 | st8 [in0] = r5, 8 ;; |
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- | 46 | st8 [in0] = r6, 8 ;; |
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- | 47 | st8 [in0] = r7, 8 ;; |
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- | 48 | st8 [in0] = r8, 8 ;; |
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- | 49 | st8 [in0] = r9, 8 ;; |
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- | 50 | st8 [in0] = r10, 8 ;; |
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- | 51 | st8 [in0] = r11, 8 ;; |
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- | 52 | st8 [in0] = r12, 8 ;; /* save sp */ |
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- | 53 | st8 [in0] = r13, 8 ;; |
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- | 54 | st8 [in0] = r14, 8 ;; |
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- | 55 | st8 [in0] = r15, 8 ;; |
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- | 56 | st8 [in0] = r16, 8 ;; |
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- | 57 | st8 [in0] = r17, 8 ;; |
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- | 58 | st8 [in0] = r18, 8 ;; |
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- | 59 | st8 [in0] = r19, 8 ;; |
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- | 60 | st8 [in0] = r20, 8 ;; |
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- | 61 | st8 [in0] = r21, 8 ;; |
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- | 62 | st8 [in0] = r22, 8 ;; |
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- | 63 | st8 [in0] = r23, 8 ;; |
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- | 64 | st8 [in0] = r24, 8 ;; |
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- | 65 | st8 [in0] = r25, 8 ;; |
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- | 66 | st8 [in0] = r26, 8 ;; |
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- | 67 | st8 [in0] = r27, 8 ;; |
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- | 68 | st8 [in0] = r28, 8 ;; |
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- | 69 | st8 [in0] = r29, 8 ;; |
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- | 70 | st8 [in0] = r30, 8 ;; |
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- | 71 | st8 [in0] = r31, 8 ;; |
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- | 72 | ||
- | 73 | /* save pc */ |
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- | 74 | mov loc1 = b0 ;; |
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- | 75 | st8 [in0] = loc1, 8 |
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- | 76 | ||
- | 77 | mov ar.pfs = loc0 |
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- | 78 | ||
- | 79 | add r8 = r0, r0, 1 /* context_save returns 1 */ |
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35 | br.ret.sptk.many rp |
80 | br.ret.sptk.many rp |
36 | 81 | ||
37 | context_restore: |
82 | context_restore: |
- | 83 | alloc loc0 = ar.pfs, 1, 2, 0, 0 |
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- | 84 | ||
- | 85 | /* |
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- | 86 | * TODO: restore the rest of the context registers. |
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- | 87 | */ |
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- | 88 | ||
- | 89 | ld8 r1 = [in0], 8 ;; |
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- | 90 | ld8 r2 = [in0], 8 ;; |
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- | 91 | ld8 r3 = [in0], 8 ;; |
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- | 92 | ld8 r4 = [in0], 8 ;; |
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- | 93 | ld8 r5 = [in0], 8 ;; |
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- | 94 | ld8 r6 = [in0], 8 ;; |
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- | 95 | ld8 r7 = [in0], 8 ;; |
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- | 96 | ld8 r8 = [in0], 8 ;; |
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- | 97 | ld8 r9 = [in0], 8 ;; |
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- | 98 | ld8 r10 = [in0], 8 ;; |
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- | 99 | ld8 r11 = [in0], 8 ;; |
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- | 100 | ld8 r12 = [in0], 8 ;; /* restore sp */ |
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- | 101 | ld8 r13 = [in0], 8 ;; |
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- | 102 | ld8 r14 = [in0], 8 ;; |
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- | 103 | ld8 r15 = [in0], 8 ;; |
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- | 104 | ld8 r16 = [in0], 8 ;; |
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- | 105 | ld8 r17 = [in0], 8 ;; |
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- | 106 | ld8 r18 = [in0], 8 ;; |
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- | 107 | ld8 r19 = [in0], 8 ;; |
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- | 108 | ld8 r20 = [in0], 8 ;; |
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- | 109 | ld8 r21 = [in0], 8 ;; |
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- | 110 | ld8 r22 = [in0], 8 ;; |
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- | 111 | ld8 r23 = [in0], 8 ;; |
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- | 112 | ld8 r24 = [in0], 8 ;; |
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- | 113 | ld8 r25 = [in0], 8 ;; |
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- | 114 | ld8 r26 = [in0], 8 ;; |
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- | 115 | ld8 r27 = [in0], 8 ;; |
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- | 116 | ld8 r28 = [in0], 8 ;; |
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- | 117 | ld8 r29 = [in0], 8 ;; |
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- | 118 | ld8 r30 = [in0], 8 ;; |
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- | 119 | ld8 r31 = [in0], 8 ;; |
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- | 120 | ||
- | 121 | /* restore pc */ |
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- | 122 | ld8 loc1 = [in0], 8 ;; |
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- | 123 | mov b0 = loc1 |
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- | 124 | ||
- | 125 | mov ar.pfs = loc0 |
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- | 126 | ||
- | 127 | mov r8 = r0 /* context_restore returns 0 */ |
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38 | br.ret.sptk.many rp |
128 | br.ret.sptk.many rp |
39 | 129 |