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.global context_save
 31 
.global context_save
32 
.global context_restore
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.global context_restore
33 
 
 33 
 
34 
context_save:
 34 
context_save:
35 
	alloc loc0 = ar.pfs, 1, 9, 0, 0
 35 
	alloc loc0 = ar.pfs, 1, 10, 0, 0
- 
 
 36 
	mov loc1 = ar.unat	;;
- 
 
 37
- 
 
 38 
	st8 [in0] = loc0, 8	;;	/* save ar.pfs */
- 
 
 39 
	st8 [in0] = loc1, 8	;;	/* save ar.unat (caller) */
- 
 
 40 
	mov loc2 = in0		;;
- 
 
 41 
	add in0 = 8, in0	;;	/* skip ar.unat (callee) */
36
42
37 
	/*
 43 
	/*
38 
	 * TODO: save the rest of the context registers.
 44 
	 * TODO: save the rest of the context registers.
39 
	 */
 45 
	 */
40 
 
 46 
 
41 
	/*
 47 
	/*
42 
	 * Save general registers
 48 
	 * Save general registers including NaT bits
43 
	 */
 49 
	 */
44 
	st8 [in0] = r1, 8	;;
 50 
	st8.spill [in0] = r1, 8		;;
45 
	st8 [in0] = r2, 8	;;
 51 
	st8.spill [in0] = r2, 8		;;
46 
	st8 [in0] = r3, 8	;;
 52 
	st8.spill [in0] = r3, 8		;;
47 
	st8 [in0] = r4, 8	;;
 53 
	st8.spill [in0] = r4, 8		;;
48 
	st8 [in0] = r5, 8	;;
 54 
	st8.spill [in0] = r5, 8		;;
49 
	st8 [in0] = r6, 8	;;
 55 
	st8.spill [in0] = r6, 8		;;
50 
	st8 [in0] = r7, 8	;;
 56 
	st8.spill [in0] = r7, 8		;;
51 
	st8 [in0] = r8, 8	;;
 57 
	st8.spill [in0] = r8, 8		;;
52 
	st8 [in0] = r9, 8	;;
 58 
	st8.spill [in0] = r9, 8		;;
53 
	st8 [in0] = r10, 8	;;
 59 
	st8.spill [in0] = r10, 8	;;
54 
	st8 [in0] = r11, 8	;;
 60 
	st8.spill [in0] = r11, 8	;;
55 
	st8 [in0] = r12, 8	;;	/* save sp */
 61 
	st8.spill [in0] = r12, 8	;;	/* save sp */
56 
	st8 [in0] = r13, 8	;;
 62 
	st8.spill [in0] = r13, 8	;;
57 
	st8 [in0] = r14, 8	;;
 63 
	st8.spill [in0] = r14, 8	;;
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	st8 [in0] = r15, 8	;;
 64 
	st8.spill [in0] = r15, 8	;;
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	st8 [in0] = r16, 8	;;
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	st8.spill [in0] = r16, 8	;;
60 
	st8 [in0] = r17, 8	;;
 66 
	st8.spill [in0] = r17, 8	;;
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	st8 [in0] = r18, 8	;;
 67 
	st8.spill [in0] = r18, 8	;;
62 
	st8 [in0] = r19, 8	;;
 68 
	st8.spill [in0] = r19, 8	;;
63 
	st8 [in0] = r20, 8	;;
 69 
	st8.spill [in0] = r20, 8	;;
64 
	st8 [in0] = r21, 8	;;
 70 
	st8.spill [in0] = r21, 8	;;
65 
	st8 [in0] = r22, 8	;;
 71 
	st8.spill [in0] = r22, 8	;;
66 
	st8 [in0] = r23, 8	;;
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	st8.spill [in0] = r23, 8	;;
67 
	st8 [in0] = r24, 8	;;
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	st8.spill [in0] = r24, 8	;;
68 
	st8 [in0] = r25, 8	;;
 74 
	st8.spill [in0] = r25, 8	;;
69 
	st8 [in0] = r26, 8	;;
 75 
	st8.spill [in0] = r26, 8	;;
70 
	st8 [in0] = r27, 8	;;
 76 
	st8.spill [in0] = r27, 8	;;
71 
	st8 [in0] = r28, 8	;;
 77 
	st8.spill [in0] = r28, 8	;;
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	st8 [in0] = r29, 8	;;
 78 
	st8.spill [in0] = r29, 8	;;
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	st8 [in0] = r30, 8	;;
 79 
	st8.spill [in0] = r30, 8	;;
74 
	st8 [in0] = r31, 8	;;
 80 
	st8.spill [in0] = r31, 8	;;
- 
 
 81 
 
- 
 
 82 
	mov loc3 = ar.unat		;;
- 
 
 83 
	st8 [loc2] = loc3		/* save ar.unat (callee) */
75 
 
 84 
 
76 
	/*
 85 
	/*
77 
	 * Save branch registers
 86 
	 * Save branch registers
78 
	 */
 87 
	 */
79 
	mov loc1 = b0		;;
 88 
	mov loc2 = b0		;;
80 
	st8 [in0] = loc1, 8		/* save pc */
 89 
	st8 [in0] = loc2, 8		/* save pc */
81 
	mov loc2 = b1		;;
 - 
 
82 
	st8 [in0] = loc2, 8
 - 
 
83 
	mov loc3 = b2		;;
 90 
	mov loc3 = b1		;;
84 
	st8 [in0] = loc3, 8
 91 
	st8 [in0] = loc3, 8
85 
	mov loc4 = b3		;;
 92 
	mov loc4 = b2		;;
86 
	st8 [in0] = loc4, 8
 93 
	st8 [in0] = loc4, 8
87 
	mov loc5 = b4		;;
 94 
	mov loc5 = b3		;;
88 
	st8 [in0] = loc5, 8
 95 
	st8 [in0] = loc5, 8
89 
	mov loc6 = b5		;;
 96 
	mov loc6 = b4		;;
90 
	st8 [in0] = loc6, 8
 97 
	st8 [in0] = loc6, 8
91 
	mov loc7 = b6		;;
 98 
	mov loc7 = b5		;;
92 
	st8 [in0] = loc7, 8
 99 
	st8 [in0] = loc7, 8
93 
	mov loc8 = b7		;;
 100 
	mov loc8 = b6		;;
94 
	st8 [in0] = loc8, 8
 101 
	st8 [in0] = loc8, 8
- 
 
 102 
	mov loc9 = b7		;;
- 
 
 103 
	st8 [in0] = loc9, 8
95 
 
 104 
 
96 
	/*
 105 
	/*
97 
	 * Save predicate registers
 106 
	 * Save predicate registers
98 
	 */
 107 
	 */
99 
	mov loc1 = pr		;;
 108 
	mov loc2 = pr		;;
100 
	st8 [in0] = loc1, 8
 109 
	st8 [in0] = loc2, 8
101
110
102 
	mov ar.pfs = loc0
 111 
	mov ar.pfs = loc0
- 
 
 112 
	mov ar.unat = loc1
103
113
104 
	add r8 = r0, r0, 1 		/* context_save returns 1 */
 114 
	add r8 = r0, r0, 1 		/* context_save returns 1 */
105 
	br.ret.sptk.many b0
 115 
	br.ret.sptk.many b0
106 
 
 116 
 
107 
context_restore:
 117 
context_restore:
108 
	alloc loc0 = ar.pfs, 1, 9, 0, 0
 118 
	alloc loc0 = ar.pfs, 1, 10, 0, 0	;;
109 
 
 119 
 
110 
	/*
 120 
	/*
111 
	 * TODO: restore the rest of the context registers.
 121 
	 * TODO: restore the rest of the context registers.
112 
	 */
 122 
	 */
113
123
- 
 
 124 
	ld8 loc0 = [in0], 8	;;	/* load pfs */
- 
 
 125 
	ld8 loc1 = [in0], 8	;;	/* load unat (caller) */
- 
 
 126 
	ld8 loc2 = [in0], 8	;;	/* load unat (callee) */
- 
 
 127
- 
 
 128 
	mov ar.unat = loc2	;;
- 
 
 129
114 
	/*
 130 
	/*
115 
	 * Restore general registers
 131 
	 * Restore general registers including NaT bits
116 
	 */
 132 
	 */
117 
	ld8 r1 = [in0], 8	;;
 133 
	ld8.fill r1 = [in0], 8	;;
118 
	ld8 r2 = [in0], 8	;;
 134 
	ld8.fill r2 = [in0], 8	;;
119 
	ld8 r3 = [in0], 8	;;
 135 
	ld8.fill r3 = [in0], 8	;;
120 
	ld8 r4 = [in0], 8	;;
 136 
	ld8.fill r4 = [in0], 8	;;
121 
	ld8 r5 = [in0], 8	;;
 137 
	ld8.fill r5 = [in0], 8	;;
122 
	ld8 r6 = [in0], 8	;;
 138 
	ld8.fill r6 = [in0], 8	;;
123 
	ld8 r7 = [in0], 8	;;
 139 
	ld8.fill r7 = [in0], 8	;;
124 
	ld8 r8 = [in0], 8	;;
 140 
	ld8.fill r8 = [in0], 8	;;
125 
	ld8 r9 = [in0], 8	;;
 141 
	ld8.fill r9 = [in0], 8	;;
126 
	ld8 r10 = [in0], 8	;;
 142 
	ld8.fill r10 = [in0], 8	;;
127 
	ld8 r11 = [in0], 8	;;
 143 
	ld8.fill r11 = [in0], 8	;;
128 
	ld8 r12 = [in0], 8	;;	/* restore sp */
 144 
	ld8.fill r12 = [in0], 8	;;	/* restore sp */
129 
	ld8 r13 = [in0], 8	;;
 145 
	ld8.fill r13 = [in0], 8	;;
130 
	ld8 r14 = [in0], 8	;;
 146 
	ld8.fill r14 = [in0], 8	;;
131 
	ld8 r15 = [in0], 8	;;
 147 
	ld8.fill r15 = [in0], 8	;;
132 
	ld8 r16 = [in0], 8	;;
 148 
	ld8.fill r16 = [in0], 8	;;
133 
	ld8 r17 = [in0], 8	;;
 149 
	ld8.fill r17 = [in0], 8	;;
134 
	ld8 r18 = [in0], 8	;;
 150 
	ld8.fill r18 = [in0], 8	;;
135 
	ld8 r19 = [in0], 8	;;
 151 
	ld8.fill r19 = [in0], 8	;;
136 
	ld8 r20 = [in0], 8	;;
 152 
	ld8.fill r20 = [in0], 8	;;
137 
	ld8 r21 = [in0], 8	;;
 153 
	ld8.fill r21 = [in0], 8	;;
138 
	ld8 r22 = [in0], 8	;;
 154 
	ld8.fill r22 = [in0], 8	;;
139 
	ld8 r23 = [in0], 8	;;
 155 
	ld8.fill r23 = [in0], 8	;;
140 
	ld8 r24 = [in0], 8	;;
 156 
	ld8.fill r24 = [in0], 8	;;
141 
	ld8 r25 = [in0], 8	;;
 157 
	ld8.fill r25 = [in0], 8	;;
142 
	ld8 r26 = [in0], 8	;;
 158 
	ld8.fill r26 = [in0], 8	;;
143 
	ld8 r27 = [in0], 8	;;
 159 
	ld8.fill r27 = [in0], 8	;;
144 
	ld8 r28 = [in0], 8	;;
 160 
	ld8.fill r28 = [in0], 8	;;
145 
	ld8 r29 = [in0], 8	;;
 161 
	ld8.fill r29 = [in0], 8	;;
146 
	ld8 r30 = [in0], 8	;;
 162 
	ld8.fill r30 = [in0], 8	;;
147 
	ld8 r31 = [in0], 8	;;
 163 
	ld8.fill r31 = [in0], 8	;;
148 
 
 164 
 
149 
	/*
165 
	/*
150 
	 * Restore branch registers
 166 
	 * Restore branch registers
151 
	 */
 167 
	 */
152 
	ld8 loc1 = [in0], 8	;;	/* restore pc */
 168 
	ld8 loc2 = [in0], 8	;;	/* restore pc */
153 
	mov b0 = loc1
 - 
 
154 
	ld8 loc2 = [in0], 8	;;
 - 
 
155 
	mov b1 = loc2
 169 
	mov b0 = loc2
156 
	ld8 loc3 = [in0], 8	;;
 170 
	ld8 loc3 = [in0], 8	;;
157 
	mov b2 = loc3
 171 
	mov b1 = loc3
158 
	ld8 loc4 = [in0], 8	;;
 172 
	ld8 loc4 = [in0], 8	;;
159 
	mov b3 = loc4
 173 
	mov b2 = loc4
160 
	ld8 loc5 = [in0], 8	;;
 174 
	ld8 loc5 = [in0], 8	;;
161 
	mov b4 = loc5
 175 
	mov b3 = loc5
162 
	ld8 loc6 = [in0], 8	;;
 176 
	ld8 loc6 = [in0], 8	;;
163 
	mov b5 = loc6
 177 
	mov b4 = loc6
164 
	ld8 loc7 = [in0], 8	;;
 178 
	ld8 loc7 = [in0], 8	;;
165 
	mov b6 = loc7
 179 
	mov b5 = loc7
166 
	ld8 loc8 = [in0], 8	;;
 180 
	ld8 loc8 = [in0], 8	;;
167 
	mov b7 = loc8
 181 
	mov b6 = loc8
- 
 
 182 
	ld8 loc9 = [in0], 8	;;
- 
 
 183 
	mov b7 = loc9
168 
 
 184 
 
- 
 
 185 
	/*
- 
 
 186 
	 * Restore predicate registers
- 
 
 187 
	 */
169 
	ld8 loc1 = [in0], 8	;;
 188 
	ld8 loc2 = [in0], 8	;;
170 
	mov pr = loc1, ~0
 189 
	mov pr = loc2, ~0
171
190
172 
	mov ar.pfs = loc0
 191 
	mov ar.pfs = loc0
- 
 
 192 
	mov ar.unat = loc1
173
193
174 
	mov r8 = r0			/* context_restore returns 0 */
 194 
	mov r8 = r0			/* context_restore returns 0 */
175 
	br.ret.sptk.many b0
 195 
	br.ret.sptk.many b0