root / target-alpha / op_helper.c @ f58ae59c
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1 | 4c9649a9 | j_mayer | /*
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2 | 4c9649a9 | j_mayer | * Alpha emulation cpu micro-operations helpers for qemu.
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3 | 5fafdf24 | ths | *
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4 | 4c9649a9 | j_mayer | * Copyright (c) 2007 Jocelyn Mayer
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5 | 4c9649a9 | j_mayer | *
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6 | 4c9649a9 | j_mayer | * This library is free software; you can redistribute it and/or
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7 | 4c9649a9 | j_mayer | * modify it under the terms of the GNU Lesser General Public
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8 | 4c9649a9 | j_mayer | * License as published by the Free Software Foundation; either
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9 | 4c9649a9 | j_mayer | * version 2 of the License, or (at your option) any later version.
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10 | 4c9649a9 | j_mayer | *
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11 | 4c9649a9 | j_mayer | * This library is distributed in the hope that it will be useful,
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12 | 4c9649a9 | j_mayer | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | 4c9649a9 | j_mayer | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | 4c9649a9 | j_mayer | * Lesser General Public License for more details.
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15 | 4c9649a9 | j_mayer | *
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16 | 4c9649a9 | j_mayer | * You should have received a copy of the GNU Lesser General Public
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17 | 8167ee88 | Blue Swirl | * License along with this library; if not, see <http://www.gnu.org/licenses/>.
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18 | 4c9649a9 | j_mayer | */
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19 | 4c9649a9 | j_mayer | |
20 | 4c9649a9 | j_mayer | #include "exec.h" |
21 | 603fccce | j_mayer | #include "host-utils.h" |
22 | 4c9649a9 | j_mayer | #include "softfloat.h" |
23 | a7812ae4 | pbrook | #include "helper.h" |
24 | 18f8e2c0 | Richard Henderson | #include "qemu-timer.h" |
25 | 4c9649a9 | j_mayer | |
26 | 4c9649a9 | j_mayer | /*****************************************************************************/
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27 | 4c9649a9 | j_mayer | /* Exceptions processing helpers */
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28 | c2c789cf | Richard Henderson | void QEMU_NORETURN helper_excp (int excp, int error) |
29 | 4c9649a9 | j_mayer | { |
30 | 4c9649a9 | j_mayer | env->exception_index = excp; |
31 | 4c9649a9 | j_mayer | env->error_code = error; |
32 | 4c9649a9 | j_mayer | cpu_loop_exit(); |
33 | 4c9649a9 | j_mayer | } |
34 | 4c9649a9 | j_mayer | |
35 | 6ad02592 | aurel32 | uint64_t helper_load_pcc (void)
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36 | 4c9649a9 | j_mayer | { |
37 | 18f8e2c0 | Richard Henderson | /* ??? This isn't a timer for which we have any rate info. */
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38 | 18f8e2c0 | Richard Henderson | return (uint32_t)cpu_get_real_ticks();
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39 | 4c9649a9 | j_mayer | } |
40 | 4c9649a9 | j_mayer | |
41 | f18cd223 | aurel32 | uint64_t helper_load_fpcr (void)
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42 | 4c9649a9 | j_mayer | { |
43 | ba0e276d | Richard Henderson | return cpu_alpha_load_fpcr (env);
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44 | 4c9649a9 | j_mayer | } |
45 | 4c9649a9 | j_mayer | |
46 | f18cd223 | aurel32 | void helper_store_fpcr (uint64_t val)
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47 | 4c9649a9 | j_mayer | { |
48 | ba0e276d | Richard Henderson | cpu_alpha_store_fpcr (env, val); |
49 | 4c9649a9 | j_mayer | } |
50 | 4c9649a9 | j_mayer | |
51 | 04acd307 | aurel32 | uint64_t helper_addqv (uint64_t op1, uint64_t op2) |
52 | 4c9649a9 | j_mayer | { |
53 | 04acd307 | aurel32 | uint64_t tmp = op1; |
54 | 04acd307 | aurel32 | op1 += op2; |
55 | 04acd307 | aurel32 | if (unlikely((tmp ^ op2 ^ (-1ULL)) & (tmp ^ op1) & (1ULL << 63))) { |
56 | 866be65d | Richard Henderson | helper_excp(EXCP_ARITH, EXC_M_IOV); |
57 | 4c9649a9 | j_mayer | } |
58 | 04acd307 | aurel32 | return op1;
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59 | 4c9649a9 | j_mayer | } |
60 | 4c9649a9 | j_mayer | |
61 | 04acd307 | aurel32 | uint64_t helper_addlv (uint64_t op1, uint64_t op2) |
62 | 4c9649a9 | j_mayer | { |
63 | 04acd307 | aurel32 | uint64_t tmp = op1; |
64 | 04acd307 | aurel32 | op1 = (uint32_t)(op1 + op2); |
65 | 04acd307 | aurel32 | if (unlikely((tmp ^ op2 ^ (-1UL)) & (tmp ^ op1) & (1UL << 31))) { |
66 | 866be65d | Richard Henderson | helper_excp(EXCP_ARITH, EXC_M_IOV); |
67 | 4c9649a9 | j_mayer | } |
68 | 04acd307 | aurel32 | return op1;
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69 | 4c9649a9 | j_mayer | } |
70 | 4c9649a9 | j_mayer | |
71 | 04acd307 | aurel32 | uint64_t helper_subqv (uint64_t op1, uint64_t op2) |
72 | 4c9649a9 | j_mayer | { |
73 | ecbb5ea1 | aurel32 | uint64_t res; |
74 | ecbb5ea1 | aurel32 | res = op1 - op2; |
75 | ecbb5ea1 | aurel32 | if (unlikely((op1 ^ op2) & (res ^ op1) & (1ULL << 63))) { |
76 | 866be65d | Richard Henderson | helper_excp(EXCP_ARITH, EXC_M_IOV); |
77 | 4c9649a9 | j_mayer | } |
78 | ecbb5ea1 | aurel32 | return res;
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79 | 4c9649a9 | j_mayer | } |
80 | 4c9649a9 | j_mayer | |
81 | 04acd307 | aurel32 | uint64_t helper_sublv (uint64_t op1, uint64_t op2) |
82 | 4c9649a9 | j_mayer | { |
83 | ecbb5ea1 | aurel32 | uint32_t res; |
84 | ecbb5ea1 | aurel32 | res = op1 - op2; |
85 | ecbb5ea1 | aurel32 | if (unlikely((op1 ^ op2) & (res ^ op1) & (1UL << 31))) { |
86 | 866be65d | Richard Henderson | helper_excp(EXCP_ARITH, EXC_M_IOV); |
87 | 4c9649a9 | j_mayer | } |
88 | ecbb5ea1 | aurel32 | return res;
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89 | 4c9649a9 | j_mayer | } |
90 | 4c9649a9 | j_mayer | |
91 | 04acd307 | aurel32 | uint64_t helper_mullv (uint64_t op1, uint64_t op2) |
92 | 4c9649a9 | j_mayer | { |
93 | 04acd307 | aurel32 | int64_t res = (int64_t)op1 * (int64_t)op2; |
94 | 4c9649a9 | j_mayer | |
95 | 4c9649a9 | j_mayer | if (unlikely((int32_t)res != res)) {
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96 | 866be65d | Richard Henderson | helper_excp(EXCP_ARITH, EXC_M_IOV); |
97 | 4c9649a9 | j_mayer | } |
98 | 04acd307 | aurel32 | return (int64_t)((int32_t)res);
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99 | 4c9649a9 | j_mayer | } |
100 | 4c9649a9 | j_mayer | |
101 | 04acd307 | aurel32 | uint64_t helper_mulqv (uint64_t op1, uint64_t op2) |
102 | 4c9649a9 | j_mayer | { |
103 | e14fe0a9 | j_mayer | uint64_t tl, th; |
104 | e14fe0a9 | j_mayer | |
105 | 04acd307 | aurel32 | muls64(&tl, &th, op1, op2); |
106 | e14fe0a9 | j_mayer | /* If th != 0 && th != -1, then we had an overflow */
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107 | e14fe0a9 | j_mayer | if (unlikely((th + 1) > 1)) { |
108 | 866be65d | Richard Henderson | helper_excp(EXCP_ARITH, EXC_M_IOV); |
109 | 4c9649a9 | j_mayer | } |
110 | 04acd307 | aurel32 | return tl;
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111 | 04acd307 | aurel32 | } |
112 | 04acd307 | aurel32 | |
113 | 04acd307 | aurel32 | uint64_t helper_umulh (uint64_t op1, uint64_t op2) |
114 | 04acd307 | aurel32 | { |
115 | 04acd307 | aurel32 | uint64_t tl, th; |
116 | 04acd307 | aurel32 | |
117 | 04acd307 | aurel32 | mulu64(&tl, &th, op1, op2); |
118 | 04acd307 | aurel32 | return th;
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119 | 4c9649a9 | j_mayer | } |
120 | 4c9649a9 | j_mayer | |
121 | ae8ecd42 | aurel32 | uint64_t helper_ctpop (uint64_t arg) |
122 | 4c9649a9 | j_mayer | { |
123 | ae8ecd42 | aurel32 | return ctpop64(arg);
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124 | 4c9649a9 | j_mayer | } |
125 | 4c9649a9 | j_mayer | |
126 | ae8ecd42 | aurel32 | uint64_t helper_ctlz (uint64_t arg) |
127 | 4c9649a9 | j_mayer | { |
128 | ae8ecd42 | aurel32 | return clz64(arg);
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129 | 4c9649a9 | j_mayer | } |
130 | 4c9649a9 | j_mayer | |
131 | ae8ecd42 | aurel32 | uint64_t helper_cttz (uint64_t arg) |
132 | 4c9649a9 | j_mayer | { |
133 | ae8ecd42 | aurel32 | return ctz64(arg);
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134 | 4c9649a9 | j_mayer | } |
135 | 4c9649a9 | j_mayer | |
136 | 636aa200 | Blue Swirl | static inline uint64_t byte_zap(uint64_t op, uint8_t mskb) |
137 | 4c9649a9 | j_mayer | { |
138 | 4c9649a9 | j_mayer | uint64_t mask; |
139 | 4c9649a9 | j_mayer | |
140 | 4c9649a9 | j_mayer | mask = 0;
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141 | 4c9649a9 | j_mayer | mask |= ((mskb >> 0) & 1) * 0x00000000000000FFULL; |
142 | 4c9649a9 | j_mayer | mask |= ((mskb >> 1) & 1) * 0x000000000000FF00ULL; |
143 | 4c9649a9 | j_mayer | mask |= ((mskb >> 2) & 1) * 0x0000000000FF0000ULL; |
144 | 4c9649a9 | j_mayer | mask |= ((mskb >> 3) & 1) * 0x00000000FF000000ULL; |
145 | 4c9649a9 | j_mayer | mask |= ((mskb >> 4) & 1) * 0x000000FF00000000ULL; |
146 | 4c9649a9 | j_mayer | mask |= ((mskb >> 5) & 1) * 0x0000FF0000000000ULL; |
147 | 4c9649a9 | j_mayer | mask |= ((mskb >> 6) & 1) * 0x00FF000000000000ULL; |
148 | 4c9649a9 | j_mayer | mask |= ((mskb >> 7) & 1) * 0xFF00000000000000ULL; |
149 | 4c9649a9 | j_mayer | |
150 | 4c9649a9 | j_mayer | return op & ~mask;
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151 | 4c9649a9 | j_mayer | } |
152 | 4c9649a9 | j_mayer | |
153 | b3249f63 | aurel32 | uint64_t helper_zap(uint64_t val, uint64_t mask) |
154 | 4c9649a9 | j_mayer | { |
155 | b3249f63 | aurel32 | return byte_zap(val, mask);
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156 | 4c9649a9 | j_mayer | } |
157 | 4c9649a9 | j_mayer | |
158 | b3249f63 | aurel32 | uint64_t helper_zapnot(uint64_t val, uint64_t mask) |
159 | 4c9649a9 | j_mayer | { |
160 | b3249f63 | aurel32 | return byte_zap(val, ~mask);
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161 | 4c9649a9 | j_mayer | } |
162 | 4c9649a9 | j_mayer | |
163 | 04acd307 | aurel32 | uint64_t helper_cmpbge (uint64_t op1, uint64_t op2) |
164 | 4c9649a9 | j_mayer | { |
165 | 4c9649a9 | j_mayer | uint8_t opa, opb, res; |
166 | 4c9649a9 | j_mayer | int i;
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167 | 4c9649a9 | j_mayer | |
168 | 4c9649a9 | j_mayer | res = 0;
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169 | 970d622e | aurel32 | for (i = 0; i < 8; i++) { |
170 | 04acd307 | aurel32 | opa = op1 >> (i * 8);
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171 | 04acd307 | aurel32 | opb = op2 >> (i * 8);
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172 | 4c9649a9 | j_mayer | if (opa >= opb)
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173 | 4c9649a9 | j_mayer | res |= 1 << i;
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174 | 4c9649a9 | j_mayer | } |
175 | 04acd307 | aurel32 | return res;
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176 | 4c9649a9 | j_mayer | } |
177 | 4c9649a9 | j_mayer | |
178 | 13e4df99 | Richard Henderson | uint64_t helper_minub8 (uint64_t op1, uint64_t op2) |
179 | 13e4df99 | Richard Henderson | { |
180 | 13e4df99 | Richard Henderson | uint64_t res = 0;
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181 | 13e4df99 | Richard Henderson | uint8_t opa, opb, opr; |
182 | 13e4df99 | Richard Henderson | int i;
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183 | 13e4df99 | Richard Henderson | |
184 | 13e4df99 | Richard Henderson | for (i = 0; i < 8; ++i) { |
185 | 13e4df99 | Richard Henderson | opa = op1 >> (i * 8);
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186 | 13e4df99 | Richard Henderson | opb = op2 >> (i * 8);
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187 | 13e4df99 | Richard Henderson | opr = opa < opb ? opa : opb; |
188 | 13e4df99 | Richard Henderson | res |= (uint64_t)opr << (i * 8);
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189 | 13e4df99 | Richard Henderson | } |
190 | 13e4df99 | Richard Henderson | return res;
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191 | 13e4df99 | Richard Henderson | } |
192 | 13e4df99 | Richard Henderson | |
193 | 13e4df99 | Richard Henderson | uint64_t helper_minsb8 (uint64_t op1, uint64_t op2) |
194 | 13e4df99 | Richard Henderson | { |
195 | 13e4df99 | Richard Henderson | uint64_t res = 0;
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196 | 13e4df99 | Richard Henderson | int8_t opa, opb; |
197 | 13e4df99 | Richard Henderson | uint8_t opr; |
198 | 13e4df99 | Richard Henderson | int i;
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199 | 13e4df99 | Richard Henderson | |
200 | 13e4df99 | Richard Henderson | for (i = 0; i < 8; ++i) { |
201 | 13e4df99 | Richard Henderson | opa = op1 >> (i * 8);
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202 | 13e4df99 | Richard Henderson | opb = op2 >> (i * 8);
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203 | 13e4df99 | Richard Henderson | opr = opa < opb ? opa : opb; |
204 | 13e4df99 | Richard Henderson | res |= (uint64_t)opr << (i * 8);
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205 | 13e4df99 | Richard Henderson | } |
206 | 13e4df99 | Richard Henderson | return res;
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207 | 13e4df99 | Richard Henderson | } |
208 | 13e4df99 | Richard Henderson | |
209 | 13e4df99 | Richard Henderson | uint64_t helper_minuw4 (uint64_t op1, uint64_t op2) |
210 | 13e4df99 | Richard Henderson | { |
211 | 13e4df99 | Richard Henderson | uint64_t res = 0;
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212 | 13e4df99 | Richard Henderson | uint16_t opa, opb, opr; |
213 | 13e4df99 | Richard Henderson | int i;
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214 | 13e4df99 | Richard Henderson | |
215 | 13e4df99 | Richard Henderson | for (i = 0; i < 4; ++i) { |
216 | 13e4df99 | Richard Henderson | opa = op1 >> (i * 16);
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217 | 13e4df99 | Richard Henderson | opb = op2 >> (i * 16);
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218 | 13e4df99 | Richard Henderson | opr = opa < opb ? opa : opb; |
219 | 13e4df99 | Richard Henderson | res |= (uint64_t)opr << (i * 16);
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220 | 13e4df99 | Richard Henderson | } |
221 | 13e4df99 | Richard Henderson | return res;
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222 | 13e4df99 | Richard Henderson | } |
223 | 13e4df99 | Richard Henderson | |
224 | 13e4df99 | Richard Henderson | uint64_t helper_minsw4 (uint64_t op1, uint64_t op2) |
225 | 13e4df99 | Richard Henderson | { |
226 | 13e4df99 | Richard Henderson | uint64_t res = 0;
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227 | 13e4df99 | Richard Henderson | int16_t opa, opb; |
228 | 13e4df99 | Richard Henderson | uint16_t opr; |
229 | 13e4df99 | Richard Henderson | int i;
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230 | 13e4df99 | Richard Henderson | |
231 | 13e4df99 | Richard Henderson | for (i = 0; i < 4; ++i) { |
232 | 13e4df99 | Richard Henderson | opa = op1 >> (i * 16);
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233 | 13e4df99 | Richard Henderson | opb = op2 >> (i * 16);
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234 | 13e4df99 | Richard Henderson | opr = opa < opb ? opa : opb; |
235 | 13e4df99 | Richard Henderson | res |= (uint64_t)opr << (i * 16);
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236 | 13e4df99 | Richard Henderson | } |
237 | 13e4df99 | Richard Henderson | return res;
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238 | 13e4df99 | Richard Henderson | } |
239 | 13e4df99 | Richard Henderson | |
240 | 13e4df99 | Richard Henderson | uint64_t helper_maxub8 (uint64_t op1, uint64_t op2) |
241 | 13e4df99 | Richard Henderson | { |
242 | 13e4df99 | Richard Henderson | uint64_t res = 0;
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243 | 13e4df99 | Richard Henderson | uint8_t opa, opb, opr; |
244 | 13e4df99 | Richard Henderson | int i;
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245 | 13e4df99 | Richard Henderson | |
246 | 13e4df99 | Richard Henderson | for (i = 0; i < 8; ++i) { |
247 | 13e4df99 | Richard Henderson | opa = op1 >> (i * 8);
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248 | 13e4df99 | Richard Henderson | opb = op2 >> (i * 8);
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249 | 13e4df99 | Richard Henderson | opr = opa > opb ? opa : opb; |
250 | 13e4df99 | Richard Henderson | res |= (uint64_t)opr << (i * 8);
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251 | 13e4df99 | Richard Henderson | } |
252 | 13e4df99 | Richard Henderson | return res;
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253 | 13e4df99 | Richard Henderson | } |
254 | 13e4df99 | Richard Henderson | |
255 | 13e4df99 | Richard Henderson | uint64_t helper_maxsb8 (uint64_t op1, uint64_t op2) |
256 | 13e4df99 | Richard Henderson | { |
257 | 13e4df99 | Richard Henderson | uint64_t res = 0;
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258 | 13e4df99 | Richard Henderson | int8_t opa, opb; |
259 | 13e4df99 | Richard Henderson | uint8_t opr; |
260 | 13e4df99 | Richard Henderson | int i;
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261 | 13e4df99 | Richard Henderson | |
262 | 13e4df99 | Richard Henderson | for (i = 0; i < 8; ++i) { |
263 | 13e4df99 | Richard Henderson | opa = op1 >> (i * 8);
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264 | 13e4df99 | Richard Henderson | opb = op2 >> (i * 8);
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265 | 13e4df99 | Richard Henderson | opr = opa > opb ? opa : opb; |
266 | 13e4df99 | Richard Henderson | res |= (uint64_t)opr << (i * 8);
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267 | 13e4df99 | Richard Henderson | } |
268 | 13e4df99 | Richard Henderson | return res;
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269 | 13e4df99 | Richard Henderson | } |
270 | 13e4df99 | Richard Henderson | |
271 | 13e4df99 | Richard Henderson | uint64_t helper_maxuw4 (uint64_t op1, uint64_t op2) |
272 | 13e4df99 | Richard Henderson | { |
273 | 13e4df99 | Richard Henderson | uint64_t res = 0;
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274 | 13e4df99 | Richard Henderson | uint16_t opa, opb, opr; |
275 | 13e4df99 | Richard Henderson | int i;
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276 | 13e4df99 | Richard Henderson | |
277 | 13e4df99 | Richard Henderson | for (i = 0; i < 4; ++i) { |
278 | 13e4df99 | Richard Henderson | opa = op1 >> (i * 16);
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279 | 13e4df99 | Richard Henderson | opb = op2 >> (i * 16);
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280 | 13e4df99 | Richard Henderson | opr = opa > opb ? opa : opb; |
281 | 13e4df99 | Richard Henderson | res |= (uint64_t)opr << (i * 16);
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282 | 13e4df99 | Richard Henderson | } |
283 | 13e4df99 | Richard Henderson | return res;
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284 | 13e4df99 | Richard Henderson | } |
285 | 13e4df99 | Richard Henderson | |
286 | 13e4df99 | Richard Henderson | uint64_t helper_maxsw4 (uint64_t op1, uint64_t op2) |
287 | 13e4df99 | Richard Henderson | { |
288 | 13e4df99 | Richard Henderson | uint64_t res = 0;
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289 | 13e4df99 | Richard Henderson | int16_t opa, opb; |
290 | 13e4df99 | Richard Henderson | uint16_t opr; |
291 | 13e4df99 | Richard Henderson | int i;
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292 | 13e4df99 | Richard Henderson | |
293 | 13e4df99 | Richard Henderson | for (i = 0; i < 4; ++i) { |
294 | 13e4df99 | Richard Henderson | opa = op1 >> (i * 16);
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295 | 13e4df99 | Richard Henderson | opb = op2 >> (i * 16);
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296 | 13e4df99 | Richard Henderson | opr = opa > opb ? opa : opb; |
297 | 13e4df99 | Richard Henderson | res |= (uint64_t)opr << (i * 16);
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298 | 13e4df99 | Richard Henderson | } |
299 | 13e4df99 | Richard Henderson | return res;
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300 | 13e4df99 | Richard Henderson | } |
301 | 13e4df99 | Richard Henderson | |
302 | 13e4df99 | Richard Henderson | uint64_t helper_perr (uint64_t op1, uint64_t op2) |
303 | 13e4df99 | Richard Henderson | { |
304 | 13e4df99 | Richard Henderson | uint64_t res = 0;
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305 | 13e4df99 | Richard Henderson | uint8_t opa, opb, opr; |
306 | 13e4df99 | Richard Henderson | int i;
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307 | 13e4df99 | Richard Henderson | |
308 | 13e4df99 | Richard Henderson | for (i = 0; i < 8; ++i) { |
309 | 13e4df99 | Richard Henderson | opa = op1 >> (i * 8);
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310 | 13e4df99 | Richard Henderson | opb = op2 >> (i * 8);
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311 | 13e4df99 | Richard Henderson | if (opa >= opb)
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312 | 13e4df99 | Richard Henderson | opr = opa - opb; |
313 | 13e4df99 | Richard Henderson | else
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314 | 13e4df99 | Richard Henderson | opr = opb - opa; |
315 | 13e4df99 | Richard Henderson | res += opr; |
316 | 13e4df99 | Richard Henderson | } |
317 | 13e4df99 | Richard Henderson | return res;
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318 | 13e4df99 | Richard Henderson | } |
319 | 13e4df99 | Richard Henderson | |
320 | 13e4df99 | Richard Henderson | uint64_t helper_pklb (uint64_t op1) |
321 | 13e4df99 | Richard Henderson | { |
322 | 13e4df99 | Richard Henderson | return (op1 & 0xff) | ((op1 >> 24) & 0xff00); |
323 | 13e4df99 | Richard Henderson | } |
324 | 13e4df99 | Richard Henderson | |
325 | 13e4df99 | Richard Henderson | uint64_t helper_pkwb (uint64_t op1) |
326 | 13e4df99 | Richard Henderson | { |
327 | 13e4df99 | Richard Henderson | return ((op1 & 0xff) |
328 | 13e4df99 | Richard Henderson | | ((op1 >> 8) & 0xff00) |
329 | 13e4df99 | Richard Henderson | | ((op1 >> 16) & 0xff0000) |
330 | 13e4df99 | Richard Henderson | | ((op1 >> 24) & 0xff000000)); |
331 | 13e4df99 | Richard Henderson | } |
332 | 13e4df99 | Richard Henderson | |
333 | 13e4df99 | Richard Henderson | uint64_t helper_unpkbl (uint64_t op1) |
334 | 13e4df99 | Richard Henderson | { |
335 | 13e4df99 | Richard Henderson | return (op1 & 0xff) | ((op1 & 0xff00) << 24); |
336 | 13e4df99 | Richard Henderson | } |
337 | 13e4df99 | Richard Henderson | |
338 | 13e4df99 | Richard Henderson | uint64_t helper_unpkbw (uint64_t op1) |
339 | 13e4df99 | Richard Henderson | { |
340 | 13e4df99 | Richard Henderson | return ((op1 & 0xff) |
341 | 13e4df99 | Richard Henderson | | ((op1 & 0xff00) << 8) |
342 | 13e4df99 | Richard Henderson | | ((op1 & 0xff0000) << 16) |
343 | 13e4df99 | Richard Henderson | | ((op1 & 0xff000000) << 24)); |
344 | 13e4df99 | Richard Henderson | } |
345 | 13e4df99 | Richard Henderson | |
346 | f18cd223 | aurel32 | /* Floating point helpers */
|
347 | f18cd223 | aurel32 | |
348 | f24518b5 | Richard Henderson | void helper_setroundmode (uint32_t val)
|
349 | f24518b5 | Richard Henderson | { |
350 | f24518b5 | Richard Henderson | set_float_rounding_mode(val, &FP_STATUS); |
351 | f24518b5 | Richard Henderson | } |
352 | f24518b5 | Richard Henderson | |
353 | f24518b5 | Richard Henderson | void helper_setflushzero (uint32_t val)
|
354 | f24518b5 | Richard Henderson | { |
355 | f24518b5 | Richard Henderson | set_flush_to_zero(val, &FP_STATUS); |
356 | f24518b5 | Richard Henderson | } |
357 | f24518b5 | Richard Henderson | |
358 | f24518b5 | Richard Henderson | void helper_fp_exc_clear (void) |
359 | f24518b5 | Richard Henderson | { |
360 | f24518b5 | Richard Henderson | set_float_exception_flags(0, &FP_STATUS);
|
361 | f24518b5 | Richard Henderson | } |
362 | f24518b5 | Richard Henderson | |
363 | f24518b5 | Richard Henderson | uint32_t helper_fp_exc_get (void)
|
364 | f24518b5 | Richard Henderson | { |
365 | f24518b5 | Richard Henderson | return get_float_exception_flags(&FP_STATUS);
|
366 | f24518b5 | Richard Henderson | } |
367 | f24518b5 | Richard Henderson | |
368 | f24518b5 | Richard Henderson | /* Raise exceptions for ieee fp insns without software completion.
|
369 | f24518b5 | Richard Henderson | In that case there are no exceptions that don't trap; the mask
|
370 | f24518b5 | Richard Henderson | doesn't apply. */
|
371 | f24518b5 | Richard Henderson | void helper_fp_exc_raise(uint32_t exc, uint32_t regno)
|
372 | f24518b5 | Richard Henderson | { |
373 | f24518b5 | Richard Henderson | if (exc) {
|
374 | f24518b5 | Richard Henderson | uint32_t hw_exc = 0;
|
375 | f24518b5 | Richard Henderson | |
376 | f24518b5 | Richard Henderson | env->ipr[IPR_EXC_MASK] |= 1ull << regno;
|
377 | f24518b5 | Richard Henderson | |
378 | f24518b5 | Richard Henderson | if (exc & float_flag_invalid) {
|
379 | f24518b5 | Richard Henderson | hw_exc |= EXC_M_INV; |
380 | f24518b5 | Richard Henderson | } |
381 | f24518b5 | Richard Henderson | if (exc & float_flag_divbyzero) {
|
382 | f24518b5 | Richard Henderson | hw_exc |= EXC_M_DZE; |
383 | f24518b5 | Richard Henderson | } |
384 | f24518b5 | Richard Henderson | if (exc & float_flag_overflow) {
|
385 | f24518b5 | Richard Henderson | hw_exc |= EXC_M_FOV; |
386 | f24518b5 | Richard Henderson | } |
387 | f24518b5 | Richard Henderson | if (exc & float_flag_underflow) {
|
388 | f24518b5 | Richard Henderson | hw_exc |= EXC_M_UNF; |
389 | f24518b5 | Richard Henderson | } |
390 | f24518b5 | Richard Henderson | if (exc & float_flag_inexact) {
|
391 | f24518b5 | Richard Henderson | hw_exc |= EXC_M_INE; |
392 | f24518b5 | Richard Henderson | } |
393 | f24518b5 | Richard Henderson | helper_excp(EXCP_ARITH, hw_exc); |
394 | f24518b5 | Richard Henderson | } |
395 | f24518b5 | Richard Henderson | } |
396 | f24518b5 | Richard Henderson | |
397 | f24518b5 | Richard Henderson | /* Raise exceptions for ieee fp insns with software completion. */
|
398 | f24518b5 | Richard Henderson | void helper_fp_exc_raise_s(uint32_t exc, uint32_t regno)
|
399 | f24518b5 | Richard Henderson | { |
400 | f24518b5 | Richard Henderson | if (exc) {
|
401 | f24518b5 | Richard Henderson | env->fpcr_exc_status |= exc; |
402 | f24518b5 | Richard Henderson | |
403 | f24518b5 | Richard Henderson | exc &= ~env->fpcr_exc_mask; |
404 | f24518b5 | Richard Henderson | if (exc) {
|
405 | f24518b5 | Richard Henderson | helper_fp_exc_raise(exc, regno); |
406 | f24518b5 | Richard Henderson | } |
407 | f24518b5 | Richard Henderson | } |
408 | f24518b5 | Richard Henderson | } |
409 | f24518b5 | Richard Henderson | |
410 | f24518b5 | Richard Henderson | /* Input remapping without software completion. Handle denormal-map-to-zero
|
411 | f24518b5 | Richard Henderson | and trap for all other non-finite numbers. */
|
412 | f24518b5 | Richard Henderson | uint64_t helper_ieee_input(uint64_t val) |
413 | f24518b5 | Richard Henderson | { |
414 | f24518b5 | Richard Henderson | uint32_t exp = (uint32_t)(val >> 52) & 0x7ff; |
415 | f24518b5 | Richard Henderson | uint64_t frac = val & 0xfffffffffffffull;
|
416 | f24518b5 | Richard Henderson | |
417 | f24518b5 | Richard Henderson | if (exp == 0) { |
418 | f24518b5 | Richard Henderson | if (frac != 0) { |
419 | f24518b5 | Richard Henderson | /* If DNZ is set flush denormals to zero on input. */
|
420 | f24518b5 | Richard Henderson | if (env->fpcr_dnz) {
|
421 | f24518b5 | Richard Henderson | val &= 1ull << 63; |
422 | f24518b5 | Richard Henderson | } else {
|
423 | f24518b5 | Richard Henderson | helper_excp(EXCP_ARITH, EXC_M_UNF); |
424 | f24518b5 | Richard Henderson | } |
425 | f24518b5 | Richard Henderson | } |
426 | f24518b5 | Richard Henderson | } else if (exp == 0x7ff) { |
427 | f24518b5 | Richard Henderson | /* Infinity or NaN. */
|
428 | f24518b5 | Richard Henderson | /* ??? I'm not sure these exception bit flags are correct. I do
|
429 | f24518b5 | Richard Henderson | know that the Linux kernel, at least, doesn't rely on them and
|
430 | f24518b5 | Richard Henderson | just emulates the insn to figure out what exception to use. */
|
431 | f24518b5 | Richard Henderson | helper_excp(EXCP_ARITH, frac ? EXC_M_INV : EXC_M_FOV); |
432 | f24518b5 | Richard Henderson | } |
433 | f24518b5 | Richard Henderson | return val;
|
434 | f24518b5 | Richard Henderson | } |
435 | f24518b5 | Richard Henderson | |
436 | f24518b5 | Richard Henderson | /* Similar, but does not trap for infinities. Used for comparisons. */
|
437 | f24518b5 | Richard Henderson | uint64_t helper_ieee_input_cmp(uint64_t val) |
438 | f24518b5 | Richard Henderson | { |
439 | f24518b5 | Richard Henderson | uint32_t exp = (uint32_t)(val >> 52) & 0x7ff; |
440 | f24518b5 | Richard Henderson | uint64_t frac = val & 0xfffffffffffffull;
|
441 | f24518b5 | Richard Henderson | |
442 | f24518b5 | Richard Henderson | if (exp == 0) { |
443 | f24518b5 | Richard Henderson | if (frac != 0) { |
444 | f24518b5 | Richard Henderson | /* If DNZ is set flush denormals to zero on input. */
|
445 | f24518b5 | Richard Henderson | if (env->fpcr_dnz) {
|
446 | f24518b5 | Richard Henderson | val &= 1ull << 63; |
447 | f24518b5 | Richard Henderson | } else {
|
448 | f24518b5 | Richard Henderson | helper_excp(EXCP_ARITH, EXC_M_UNF); |
449 | f24518b5 | Richard Henderson | } |
450 | f24518b5 | Richard Henderson | } |
451 | f24518b5 | Richard Henderson | } else if (exp == 0x7ff && frac) { |
452 | f24518b5 | Richard Henderson | /* NaN. */
|
453 | f24518b5 | Richard Henderson | helper_excp(EXCP_ARITH, EXC_M_INV); |
454 | f24518b5 | Richard Henderson | } |
455 | f24518b5 | Richard Henderson | return val;
|
456 | f24518b5 | Richard Henderson | } |
457 | f24518b5 | Richard Henderson | |
458 | f24518b5 | Richard Henderson | /* Input remapping with software completion enabled. All we have to do
|
459 | f24518b5 | Richard Henderson | is handle denormal-map-to-zero; all other inputs get exceptions as
|
460 | f24518b5 | Richard Henderson | needed from the actual operation. */
|
461 | f24518b5 | Richard Henderson | uint64_t helper_ieee_input_s(uint64_t val) |
462 | f24518b5 | Richard Henderson | { |
463 | f24518b5 | Richard Henderson | if (env->fpcr_dnz) {
|
464 | f24518b5 | Richard Henderson | uint32_t exp = (uint32_t)(val >> 52) & 0x7ff; |
465 | f24518b5 | Richard Henderson | if (exp == 0) { |
466 | f24518b5 | Richard Henderson | val &= 1ull << 63; |
467 | f24518b5 | Richard Henderson | } |
468 | f24518b5 | Richard Henderson | } |
469 | f24518b5 | Richard Henderson | return val;
|
470 | f24518b5 | Richard Henderson | } |
471 | f24518b5 | Richard Henderson | |
472 | f18cd223 | aurel32 | /* F floating (VAX) */
|
473 | 636aa200 | Blue Swirl | static inline uint64_t float32_to_f(float32 fa) |
474 | 4c9649a9 | j_mayer | { |
475 | f18cd223 | aurel32 | uint64_t r, exp, mant, sig; |
476 | e2eb2798 | aurel32 | CPU_FloatU a; |
477 | f18cd223 | aurel32 | |
478 | e2eb2798 | aurel32 | a.f = fa; |
479 | e2eb2798 | aurel32 | sig = ((uint64_t)a.l & 0x80000000) << 32; |
480 | e2eb2798 | aurel32 | exp = (a.l >> 23) & 0xff; |
481 | e2eb2798 | aurel32 | mant = ((uint64_t)a.l & 0x007fffff) << 29; |
482 | f18cd223 | aurel32 | |
483 | f18cd223 | aurel32 | if (exp == 255) { |
484 | f18cd223 | aurel32 | /* NaN or infinity */
|
485 | f18cd223 | aurel32 | r = 1; /* VAX dirty zero */ |
486 | f18cd223 | aurel32 | } else if (exp == 0) { |
487 | f18cd223 | aurel32 | if (mant == 0) { |
488 | f18cd223 | aurel32 | /* Zero */
|
489 | f18cd223 | aurel32 | r = 0;
|
490 | f18cd223 | aurel32 | } else {
|
491 | f18cd223 | aurel32 | /* Denormalized */
|
492 | f18cd223 | aurel32 | r = sig | ((exp + 1) << 52) | mant; |
493 | f18cd223 | aurel32 | } |
494 | f18cd223 | aurel32 | } else {
|
495 | f18cd223 | aurel32 | if (exp >= 253) { |
496 | f18cd223 | aurel32 | /* Overflow */
|
497 | f18cd223 | aurel32 | r = 1; /* VAX dirty zero */ |
498 | f18cd223 | aurel32 | } else {
|
499 | f18cd223 | aurel32 | r = sig | ((exp + 2) << 52); |
500 | f18cd223 | aurel32 | } |
501 | f18cd223 | aurel32 | } |
502 | f18cd223 | aurel32 | |
503 | f18cd223 | aurel32 | return r;
|
504 | 4c9649a9 | j_mayer | } |
505 | 4c9649a9 | j_mayer | |
506 | 636aa200 | Blue Swirl | static inline float32 f_to_float32(uint64_t a) |
507 | 4c9649a9 | j_mayer | { |
508 | e2eb2798 | aurel32 | uint32_t exp, mant_sig; |
509 | e2eb2798 | aurel32 | CPU_FloatU r; |
510 | f18cd223 | aurel32 | |
511 | f18cd223 | aurel32 | exp = ((a >> 55) & 0x80) | ((a >> 52) & 0x7f); |
512 | f18cd223 | aurel32 | mant_sig = ((a >> 32) & 0x80000000) | ((a >> 29) & 0x007fffff); |
513 | f18cd223 | aurel32 | |
514 | f18cd223 | aurel32 | if (unlikely(!exp && mant_sig)) {
|
515 | f18cd223 | aurel32 | /* Reserved operands / Dirty zero */
|
516 | f18cd223 | aurel32 | helper_excp(EXCP_OPCDEC, 0);
|
517 | f18cd223 | aurel32 | } |
518 | f18cd223 | aurel32 | |
519 | f18cd223 | aurel32 | if (exp < 3) { |
520 | f18cd223 | aurel32 | /* Underflow */
|
521 | e2eb2798 | aurel32 | r.l = 0;
|
522 | f18cd223 | aurel32 | } else {
|
523 | e2eb2798 | aurel32 | r.l = ((exp - 2) << 23) | mant_sig; |
524 | f18cd223 | aurel32 | } |
525 | f18cd223 | aurel32 | |
526 | e2eb2798 | aurel32 | return r.f;
|
527 | 4c9649a9 | j_mayer | } |
528 | 4c9649a9 | j_mayer | |
529 | f18cd223 | aurel32 | uint32_t helper_f_to_memory (uint64_t a) |
530 | 4c9649a9 | j_mayer | { |
531 | f18cd223 | aurel32 | uint32_t r; |
532 | f18cd223 | aurel32 | r = (a & 0x00001fffe0000000ull) >> 13; |
533 | f18cd223 | aurel32 | r |= (a & 0x07ffe00000000000ull) >> 45; |
534 | f18cd223 | aurel32 | r |= (a & 0xc000000000000000ull) >> 48; |
535 | f18cd223 | aurel32 | return r;
|
536 | f18cd223 | aurel32 | } |
537 | 4c9649a9 | j_mayer | |
538 | f18cd223 | aurel32 | uint64_t helper_memory_to_f (uint32_t a) |
539 | f18cd223 | aurel32 | { |
540 | f18cd223 | aurel32 | uint64_t r; |
541 | f18cd223 | aurel32 | r = ((uint64_t)(a & 0x0000c000)) << 48; |
542 | f18cd223 | aurel32 | r |= ((uint64_t)(a & 0x003fffff)) << 45; |
543 | f18cd223 | aurel32 | r |= ((uint64_t)(a & 0xffff0000)) << 13; |
544 | f18cd223 | aurel32 | if (!(a & 0x00004000)) |
545 | f18cd223 | aurel32 | r |= 0x7ll << 59; |
546 | f18cd223 | aurel32 | return r;
|
547 | 4c9649a9 | j_mayer | } |
548 | 4c9649a9 | j_mayer | |
549 | f24518b5 | Richard Henderson | /* ??? Emulating VAX arithmetic with IEEE arithmetic is wrong. We should
|
550 | f24518b5 | Richard Henderson | either implement VAX arithmetic properly or just signal invalid opcode. */
|
551 | f24518b5 | Richard Henderson | |
552 | f18cd223 | aurel32 | uint64_t helper_addf (uint64_t a, uint64_t b) |
553 | 4c9649a9 | j_mayer | { |
554 | f18cd223 | aurel32 | float32 fa, fb, fr; |
555 | 4c9649a9 | j_mayer | |
556 | f18cd223 | aurel32 | fa = f_to_float32(a); |
557 | f18cd223 | aurel32 | fb = f_to_float32(b); |
558 | f18cd223 | aurel32 | fr = float32_add(fa, fb, &FP_STATUS); |
559 | f18cd223 | aurel32 | return float32_to_f(fr);
|
560 | 4c9649a9 | j_mayer | } |
561 | 4c9649a9 | j_mayer | |
562 | f18cd223 | aurel32 | uint64_t helper_subf (uint64_t a, uint64_t b) |
563 | 4c9649a9 | j_mayer | { |
564 | f18cd223 | aurel32 | float32 fa, fb, fr; |
565 | 4c9649a9 | j_mayer | |
566 | f18cd223 | aurel32 | fa = f_to_float32(a); |
567 | f18cd223 | aurel32 | fb = f_to_float32(b); |
568 | f18cd223 | aurel32 | fr = float32_sub(fa, fb, &FP_STATUS); |
569 | f18cd223 | aurel32 | return float32_to_f(fr);
|
570 | 4c9649a9 | j_mayer | } |
571 | 4c9649a9 | j_mayer | |
572 | f18cd223 | aurel32 | uint64_t helper_mulf (uint64_t a, uint64_t b) |
573 | 4c9649a9 | j_mayer | { |
574 | f18cd223 | aurel32 | float32 fa, fb, fr; |
575 | 4c9649a9 | j_mayer | |
576 | f18cd223 | aurel32 | fa = f_to_float32(a); |
577 | f18cd223 | aurel32 | fb = f_to_float32(b); |
578 | f18cd223 | aurel32 | fr = float32_mul(fa, fb, &FP_STATUS); |
579 | f18cd223 | aurel32 | return float32_to_f(fr);
|
580 | 4c9649a9 | j_mayer | } |
581 | 4c9649a9 | j_mayer | |
582 | f18cd223 | aurel32 | uint64_t helper_divf (uint64_t a, uint64_t b) |
583 | 4c9649a9 | j_mayer | { |
584 | f18cd223 | aurel32 | float32 fa, fb, fr; |
585 | 4c9649a9 | j_mayer | |
586 | f18cd223 | aurel32 | fa = f_to_float32(a); |
587 | f18cd223 | aurel32 | fb = f_to_float32(b); |
588 | f18cd223 | aurel32 | fr = float32_div(fa, fb, &FP_STATUS); |
589 | f18cd223 | aurel32 | return float32_to_f(fr);
|
590 | 4c9649a9 | j_mayer | } |
591 | 4c9649a9 | j_mayer | |
592 | f18cd223 | aurel32 | uint64_t helper_sqrtf (uint64_t t) |
593 | 4c9649a9 | j_mayer | { |
594 | f18cd223 | aurel32 | float32 ft, fr; |
595 | f18cd223 | aurel32 | |
596 | f18cd223 | aurel32 | ft = f_to_float32(t); |
597 | f18cd223 | aurel32 | fr = float32_sqrt(ft, &FP_STATUS); |
598 | f18cd223 | aurel32 | return float32_to_f(fr);
|
599 | 4c9649a9 | j_mayer | } |
600 | 4c9649a9 | j_mayer | |
601 | f18cd223 | aurel32 | |
602 | f18cd223 | aurel32 | /* G floating (VAX) */
|
603 | 636aa200 | Blue Swirl | static inline uint64_t float64_to_g(float64 fa) |
604 | 4c9649a9 | j_mayer | { |
605 | e2eb2798 | aurel32 | uint64_t r, exp, mant, sig; |
606 | e2eb2798 | aurel32 | CPU_DoubleU a; |
607 | 4c9649a9 | j_mayer | |
608 | e2eb2798 | aurel32 | a.d = fa; |
609 | e2eb2798 | aurel32 | sig = a.ll & 0x8000000000000000ull;
|
610 | e2eb2798 | aurel32 | exp = (a.ll >> 52) & 0x7ff; |
611 | e2eb2798 | aurel32 | mant = a.ll & 0x000fffffffffffffull;
|
612 | f18cd223 | aurel32 | |
613 | f18cd223 | aurel32 | if (exp == 2047) { |
614 | f18cd223 | aurel32 | /* NaN or infinity */
|
615 | f18cd223 | aurel32 | r = 1; /* VAX dirty zero */ |
616 | f18cd223 | aurel32 | } else if (exp == 0) { |
617 | f18cd223 | aurel32 | if (mant == 0) { |
618 | f18cd223 | aurel32 | /* Zero */
|
619 | f18cd223 | aurel32 | r = 0;
|
620 | f18cd223 | aurel32 | } else {
|
621 | f18cd223 | aurel32 | /* Denormalized */
|
622 | f18cd223 | aurel32 | r = sig | ((exp + 1) << 52) | mant; |
623 | f18cd223 | aurel32 | } |
624 | f18cd223 | aurel32 | } else {
|
625 | f18cd223 | aurel32 | if (exp >= 2045) { |
626 | f18cd223 | aurel32 | /* Overflow */
|
627 | f18cd223 | aurel32 | r = 1; /* VAX dirty zero */ |
628 | f18cd223 | aurel32 | } else {
|
629 | f18cd223 | aurel32 | r = sig | ((exp + 2) << 52); |
630 | f18cd223 | aurel32 | } |
631 | f18cd223 | aurel32 | } |
632 | f18cd223 | aurel32 | |
633 | f18cd223 | aurel32 | return r;
|
634 | 4c9649a9 | j_mayer | } |
635 | 4c9649a9 | j_mayer | |
636 | 636aa200 | Blue Swirl | static inline float64 g_to_float64(uint64_t a) |
637 | 4c9649a9 | j_mayer | { |
638 | e2eb2798 | aurel32 | uint64_t exp, mant_sig; |
639 | e2eb2798 | aurel32 | CPU_DoubleU r; |
640 | f18cd223 | aurel32 | |
641 | f18cd223 | aurel32 | exp = (a >> 52) & 0x7ff; |
642 | f18cd223 | aurel32 | mant_sig = a & 0x800fffffffffffffull;
|
643 | f18cd223 | aurel32 | |
644 | f18cd223 | aurel32 | if (!exp && mant_sig) {
|
645 | f18cd223 | aurel32 | /* Reserved operands / Dirty zero */
|
646 | f18cd223 | aurel32 | helper_excp(EXCP_OPCDEC, 0);
|
647 | f18cd223 | aurel32 | } |
648 | 4c9649a9 | j_mayer | |
649 | f18cd223 | aurel32 | if (exp < 3) { |
650 | f18cd223 | aurel32 | /* Underflow */
|
651 | e2eb2798 | aurel32 | r.ll = 0;
|
652 | f18cd223 | aurel32 | } else {
|
653 | e2eb2798 | aurel32 | r.ll = ((exp - 2) << 52) | mant_sig; |
654 | f18cd223 | aurel32 | } |
655 | f18cd223 | aurel32 | |
656 | e2eb2798 | aurel32 | return r.d;
|
657 | 4c9649a9 | j_mayer | } |
658 | 4c9649a9 | j_mayer | |
659 | f18cd223 | aurel32 | uint64_t helper_g_to_memory (uint64_t a) |
660 | 4c9649a9 | j_mayer | { |
661 | f18cd223 | aurel32 | uint64_t r; |
662 | f18cd223 | aurel32 | r = (a & 0x000000000000ffffull) << 48; |
663 | f18cd223 | aurel32 | r |= (a & 0x00000000ffff0000ull) << 16; |
664 | f18cd223 | aurel32 | r |= (a & 0x0000ffff00000000ull) >> 16; |
665 | f18cd223 | aurel32 | r |= (a & 0xffff000000000000ull) >> 48; |
666 | f18cd223 | aurel32 | return r;
|
667 | f18cd223 | aurel32 | } |
668 | 4c9649a9 | j_mayer | |
669 | f18cd223 | aurel32 | uint64_t helper_memory_to_g (uint64_t a) |
670 | f18cd223 | aurel32 | { |
671 | f18cd223 | aurel32 | uint64_t r; |
672 | f18cd223 | aurel32 | r = (a & 0x000000000000ffffull) << 48; |
673 | f18cd223 | aurel32 | r |= (a & 0x00000000ffff0000ull) << 16; |
674 | f18cd223 | aurel32 | r |= (a & 0x0000ffff00000000ull) >> 16; |
675 | f18cd223 | aurel32 | r |= (a & 0xffff000000000000ull) >> 48; |
676 | f18cd223 | aurel32 | return r;
|
677 | 4c9649a9 | j_mayer | } |
678 | 4c9649a9 | j_mayer | |
679 | f18cd223 | aurel32 | uint64_t helper_addg (uint64_t a, uint64_t b) |
680 | 4c9649a9 | j_mayer | { |
681 | f18cd223 | aurel32 | float64 fa, fb, fr; |
682 | 4c9649a9 | j_mayer | |
683 | f18cd223 | aurel32 | fa = g_to_float64(a); |
684 | f18cd223 | aurel32 | fb = g_to_float64(b); |
685 | f18cd223 | aurel32 | fr = float64_add(fa, fb, &FP_STATUS); |
686 | f18cd223 | aurel32 | return float64_to_g(fr);
|
687 | 4c9649a9 | j_mayer | } |
688 | 4c9649a9 | j_mayer | |
689 | f18cd223 | aurel32 | uint64_t helper_subg (uint64_t a, uint64_t b) |
690 | 4c9649a9 | j_mayer | { |
691 | f18cd223 | aurel32 | float64 fa, fb, fr; |
692 | 4c9649a9 | j_mayer | |
693 | f18cd223 | aurel32 | fa = g_to_float64(a); |
694 | f18cd223 | aurel32 | fb = g_to_float64(b); |
695 | f18cd223 | aurel32 | fr = float64_sub(fa, fb, &FP_STATUS); |
696 | f18cd223 | aurel32 | return float64_to_g(fr);
|
697 | 4c9649a9 | j_mayer | } |
698 | 4c9649a9 | j_mayer | |
699 | f18cd223 | aurel32 | uint64_t helper_mulg (uint64_t a, uint64_t b) |
700 | 4c9649a9 | j_mayer | { |
701 | f18cd223 | aurel32 | float64 fa, fb, fr; |
702 | 4c9649a9 | j_mayer | |
703 | f18cd223 | aurel32 | fa = g_to_float64(a); |
704 | f18cd223 | aurel32 | fb = g_to_float64(b); |
705 | f18cd223 | aurel32 | fr = float64_mul(fa, fb, &FP_STATUS); |
706 | f18cd223 | aurel32 | return float64_to_g(fr);
|
707 | 4c9649a9 | j_mayer | } |
708 | 4c9649a9 | j_mayer | |
709 | f18cd223 | aurel32 | uint64_t helper_divg (uint64_t a, uint64_t b) |
710 | 4c9649a9 | j_mayer | { |
711 | f18cd223 | aurel32 | float64 fa, fb, fr; |
712 | 4c9649a9 | j_mayer | |
713 | f18cd223 | aurel32 | fa = g_to_float64(a); |
714 | f18cd223 | aurel32 | fb = g_to_float64(b); |
715 | f18cd223 | aurel32 | fr = float64_div(fa, fb, &FP_STATUS); |
716 | f18cd223 | aurel32 | return float64_to_g(fr);
|
717 | f18cd223 | aurel32 | } |
718 | f18cd223 | aurel32 | |
719 | f18cd223 | aurel32 | uint64_t helper_sqrtg (uint64_t a) |
720 | f18cd223 | aurel32 | { |
721 | f18cd223 | aurel32 | float64 fa, fr; |
722 | 4c9649a9 | j_mayer | |
723 | f18cd223 | aurel32 | fa = g_to_float64(a); |
724 | f18cd223 | aurel32 | fr = float64_sqrt(fa, &FP_STATUS); |
725 | f18cd223 | aurel32 | return float64_to_g(fr);
|
726 | 4c9649a9 | j_mayer | } |
727 | 4c9649a9 | j_mayer | |
728 | f18cd223 | aurel32 | |
729 | f18cd223 | aurel32 | /* S floating (single) */
|
730 | d0af5445 | Richard Henderson | |
731 | d0af5445 | Richard Henderson | /* Taken from linux/arch/alpha/kernel/traps.c, s_mem_to_reg. */
|
732 | d0af5445 | Richard Henderson | static inline uint64_t float32_to_s_int(uint32_t fi) |
733 | d0af5445 | Richard Henderson | { |
734 | d0af5445 | Richard Henderson | uint32_t frac = fi & 0x7fffff;
|
735 | d0af5445 | Richard Henderson | uint32_t sign = fi >> 31;
|
736 | d0af5445 | Richard Henderson | uint32_t exp_msb = (fi >> 30) & 1; |
737 | d0af5445 | Richard Henderson | uint32_t exp_low = (fi >> 23) & 0x7f; |
738 | d0af5445 | Richard Henderson | uint32_t exp; |
739 | d0af5445 | Richard Henderson | |
740 | d0af5445 | Richard Henderson | exp = (exp_msb << 10) | exp_low;
|
741 | d0af5445 | Richard Henderson | if (exp_msb) {
|
742 | d0af5445 | Richard Henderson | if (exp_low == 0x7f) |
743 | d0af5445 | Richard Henderson | exp = 0x7ff;
|
744 | d0af5445 | Richard Henderson | } else {
|
745 | d0af5445 | Richard Henderson | if (exp_low != 0x00) |
746 | d0af5445 | Richard Henderson | exp |= 0x380;
|
747 | d0af5445 | Richard Henderson | } |
748 | d0af5445 | Richard Henderson | |
749 | d0af5445 | Richard Henderson | return (((uint64_t)sign << 63) |
750 | d0af5445 | Richard Henderson | | ((uint64_t)exp << 52)
|
751 | d0af5445 | Richard Henderson | | ((uint64_t)frac << 29));
|
752 | d0af5445 | Richard Henderson | } |
753 | d0af5445 | Richard Henderson | |
754 | 636aa200 | Blue Swirl | static inline uint64_t float32_to_s(float32 fa) |
755 | 4c9649a9 | j_mayer | { |
756 | e2eb2798 | aurel32 | CPU_FloatU a; |
757 | e2eb2798 | aurel32 | a.f = fa; |
758 | d0af5445 | Richard Henderson | return float32_to_s_int(a.l);
|
759 | d0af5445 | Richard Henderson | } |
760 | 4c9649a9 | j_mayer | |
761 | d0af5445 | Richard Henderson | static inline uint32_t s_to_float32_int(uint64_t a) |
762 | d0af5445 | Richard Henderson | { |
763 | d0af5445 | Richard Henderson | return ((a >> 32) & 0xc0000000) | ((a >> 29) & 0x3fffffff); |
764 | 4c9649a9 | j_mayer | } |
765 | 4c9649a9 | j_mayer | |
766 | 636aa200 | Blue Swirl | static inline float32 s_to_float32(uint64_t a) |
767 | 4c9649a9 | j_mayer | { |
768 | e2eb2798 | aurel32 | CPU_FloatU r; |
769 | d0af5445 | Richard Henderson | r.l = s_to_float32_int(a); |
770 | e2eb2798 | aurel32 | return r.f;
|
771 | f18cd223 | aurel32 | } |
772 | 4c9649a9 | j_mayer | |
773 | f18cd223 | aurel32 | uint32_t helper_s_to_memory (uint64_t a) |
774 | f18cd223 | aurel32 | { |
775 | d0af5445 | Richard Henderson | return s_to_float32_int(a);
|
776 | f18cd223 | aurel32 | } |
777 | 4c9649a9 | j_mayer | |
778 | f18cd223 | aurel32 | uint64_t helper_memory_to_s (uint32_t a) |
779 | f18cd223 | aurel32 | { |
780 | d0af5445 | Richard Henderson | return float32_to_s_int(a);
|
781 | 4c9649a9 | j_mayer | } |
782 | 4c9649a9 | j_mayer | |
783 | f18cd223 | aurel32 | uint64_t helper_adds (uint64_t a, uint64_t b) |
784 | 4c9649a9 | j_mayer | { |
785 | f18cd223 | aurel32 | float32 fa, fb, fr; |
786 | 4c9649a9 | j_mayer | |
787 | f18cd223 | aurel32 | fa = s_to_float32(a); |
788 | f18cd223 | aurel32 | fb = s_to_float32(b); |
789 | f18cd223 | aurel32 | fr = float32_add(fa, fb, &FP_STATUS); |
790 | f18cd223 | aurel32 | return float32_to_s(fr);
|
791 | 4c9649a9 | j_mayer | } |
792 | 4c9649a9 | j_mayer | |
793 | f18cd223 | aurel32 | uint64_t helper_subs (uint64_t a, uint64_t b) |
794 | 4c9649a9 | j_mayer | { |
795 | f18cd223 | aurel32 | float32 fa, fb, fr; |
796 | 4c9649a9 | j_mayer | |
797 | f18cd223 | aurel32 | fa = s_to_float32(a); |
798 | f18cd223 | aurel32 | fb = s_to_float32(b); |
799 | f18cd223 | aurel32 | fr = float32_sub(fa, fb, &FP_STATUS); |
800 | f18cd223 | aurel32 | return float32_to_s(fr);
|
801 | 4c9649a9 | j_mayer | } |
802 | 4c9649a9 | j_mayer | |
803 | f18cd223 | aurel32 | uint64_t helper_muls (uint64_t a, uint64_t b) |
804 | 4c9649a9 | j_mayer | { |
805 | f18cd223 | aurel32 | float32 fa, fb, fr; |
806 | 4c9649a9 | j_mayer | |
807 | f18cd223 | aurel32 | fa = s_to_float32(a); |
808 | f18cd223 | aurel32 | fb = s_to_float32(b); |
809 | f18cd223 | aurel32 | fr = float32_mul(fa, fb, &FP_STATUS); |
810 | f18cd223 | aurel32 | return float32_to_s(fr);
|
811 | 4c9649a9 | j_mayer | } |
812 | 4c9649a9 | j_mayer | |
813 | f18cd223 | aurel32 | uint64_t helper_divs (uint64_t a, uint64_t b) |
814 | 4c9649a9 | j_mayer | { |
815 | f18cd223 | aurel32 | float32 fa, fb, fr; |
816 | 4c9649a9 | j_mayer | |
817 | f18cd223 | aurel32 | fa = s_to_float32(a); |
818 | f18cd223 | aurel32 | fb = s_to_float32(b); |
819 | f18cd223 | aurel32 | fr = float32_div(fa, fb, &FP_STATUS); |
820 | f18cd223 | aurel32 | return float32_to_s(fr);
|
821 | 4c9649a9 | j_mayer | } |
822 | 4c9649a9 | j_mayer | |
823 | f18cd223 | aurel32 | uint64_t helper_sqrts (uint64_t a) |
824 | 4c9649a9 | j_mayer | { |
825 | f18cd223 | aurel32 | float32 fa, fr; |
826 | 4c9649a9 | j_mayer | |
827 | f18cd223 | aurel32 | fa = s_to_float32(a); |
828 | f18cd223 | aurel32 | fr = float32_sqrt(fa, &FP_STATUS); |
829 | f18cd223 | aurel32 | return float32_to_s(fr);
|
830 | 4c9649a9 | j_mayer | } |
831 | 4c9649a9 | j_mayer | |
832 | f18cd223 | aurel32 | |
833 | f18cd223 | aurel32 | /* T floating (double) */
|
834 | 636aa200 | Blue Swirl | static inline float64 t_to_float64(uint64_t a) |
835 | 4c9649a9 | j_mayer | { |
836 | f18cd223 | aurel32 | /* Memory format is the same as float64 */
|
837 | e2eb2798 | aurel32 | CPU_DoubleU r; |
838 | e2eb2798 | aurel32 | r.ll = a; |
839 | e2eb2798 | aurel32 | return r.d;
|
840 | 4c9649a9 | j_mayer | } |
841 | 4c9649a9 | j_mayer | |
842 | 636aa200 | Blue Swirl | static inline uint64_t float64_to_t(float64 fa) |
843 | 4c9649a9 | j_mayer | { |
844 | f18cd223 | aurel32 | /* Memory format is the same as float64 */
|
845 | e2eb2798 | aurel32 | CPU_DoubleU r; |
846 | e2eb2798 | aurel32 | r.d = fa; |
847 | e2eb2798 | aurel32 | return r.ll;
|
848 | f18cd223 | aurel32 | } |
849 | 4c9649a9 | j_mayer | |
850 | f18cd223 | aurel32 | uint64_t helper_addt (uint64_t a, uint64_t b) |
851 | f18cd223 | aurel32 | { |
852 | f18cd223 | aurel32 | float64 fa, fb, fr; |
853 | 4c9649a9 | j_mayer | |
854 | f18cd223 | aurel32 | fa = t_to_float64(a); |
855 | f18cd223 | aurel32 | fb = t_to_float64(b); |
856 | f18cd223 | aurel32 | fr = float64_add(fa, fb, &FP_STATUS); |
857 | f18cd223 | aurel32 | return float64_to_t(fr);
|
858 | 4c9649a9 | j_mayer | } |
859 | 4c9649a9 | j_mayer | |
860 | f18cd223 | aurel32 | uint64_t helper_subt (uint64_t a, uint64_t b) |
861 | 4c9649a9 | j_mayer | { |
862 | f18cd223 | aurel32 | float64 fa, fb, fr; |
863 | 4c9649a9 | j_mayer | |
864 | f18cd223 | aurel32 | fa = t_to_float64(a); |
865 | f18cd223 | aurel32 | fb = t_to_float64(b); |
866 | f18cd223 | aurel32 | fr = float64_sub(fa, fb, &FP_STATUS); |
867 | f18cd223 | aurel32 | return float64_to_t(fr);
|
868 | 4c9649a9 | j_mayer | } |
869 | 4c9649a9 | j_mayer | |
870 | f18cd223 | aurel32 | uint64_t helper_mult (uint64_t a, uint64_t b) |
871 | 4c9649a9 | j_mayer | { |
872 | f18cd223 | aurel32 | float64 fa, fb, fr; |
873 | 4c9649a9 | j_mayer | |
874 | f18cd223 | aurel32 | fa = t_to_float64(a); |
875 | f18cd223 | aurel32 | fb = t_to_float64(b); |
876 | f18cd223 | aurel32 | fr = float64_mul(fa, fb, &FP_STATUS); |
877 | f18cd223 | aurel32 | return float64_to_t(fr);
|
878 | 4c9649a9 | j_mayer | } |
879 | 4c9649a9 | j_mayer | |
880 | f18cd223 | aurel32 | uint64_t helper_divt (uint64_t a, uint64_t b) |
881 | 4c9649a9 | j_mayer | { |
882 | f18cd223 | aurel32 | float64 fa, fb, fr; |
883 | 4c9649a9 | j_mayer | |
884 | f18cd223 | aurel32 | fa = t_to_float64(a); |
885 | f18cd223 | aurel32 | fb = t_to_float64(b); |
886 | f18cd223 | aurel32 | fr = float64_div(fa, fb, &FP_STATUS); |
887 | f18cd223 | aurel32 | return float64_to_t(fr);
|
888 | 4c9649a9 | j_mayer | } |
889 | 4c9649a9 | j_mayer | |
890 | f18cd223 | aurel32 | uint64_t helper_sqrtt (uint64_t a) |
891 | 4c9649a9 | j_mayer | { |
892 | f18cd223 | aurel32 | float64 fa, fr; |
893 | 4c9649a9 | j_mayer | |
894 | f18cd223 | aurel32 | fa = t_to_float64(a); |
895 | f18cd223 | aurel32 | fr = float64_sqrt(fa, &FP_STATUS); |
896 | f18cd223 | aurel32 | return float64_to_t(fr);
|
897 | 4c9649a9 | j_mayer | } |
898 | 4c9649a9 | j_mayer | |
899 | f18cd223 | aurel32 | /* Comparisons */
|
900 | f18cd223 | aurel32 | uint64_t helper_cmptun (uint64_t a, uint64_t b) |
901 | 4c9649a9 | j_mayer | { |
902 | f18cd223 | aurel32 | float64 fa, fb; |
903 | 4c9649a9 | j_mayer | |
904 | f18cd223 | aurel32 | fa = t_to_float64(a); |
905 | f18cd223 | aurel32 | fb = t_to_float64(b); |
906 | f18cd223 | aurel32 | |
907 | f18cd223 | aurel32 | if (float64_is_nan(fa) || float64_is_nan(fb))
|
908 | f18cd223 | aurel32 | return 0x4000000000000000ULL; |
909 | f18cd223 | aurel32 | else
|
910 | f18cd223 | aurel32 | return 0; |
911 | 4c9649a9 | j_mayer | } |
912 | 4c9649a9 | j_mayer | |
913 | f18cd223 | aurel32 | uint64_t helper_cmpteq(uint64_t a, uint64_t b) |
914 | 4c9649a9 | j_mayer | { |
915 | f18cd223 | aurel32 | float64 fa, fb; |
916 | 4c9649a9 | j_mayer | |
917 | f18cd223 | aurel32 | fa = t_to_float64(a); |
918 | f18cd223 | aurel32 | fb = t_to_float64(b); |
919 | f18cd223 | aurel32 | |
920 | f18cd223 | aurel32 | if (float64_eq(fa, fb, &FP_STATUS))
|
921 | f18cd223 | aurel32 | return 0x4000000000000000ULL; |
922 | f18cd223 | aurel32 | else
|
923 | f18cd223 | aurel32 | return 0; |
924 | 4c9649a9 | j_mayer | } |
925 | 4c9649a9 | j_mayer | |
926 | f18cd223 | aurel32 | uint64_t helper_cmptle(uint64_t a, uint64_t b) |
927 | 4c9649a9 | j_mayer | { |
928 | f18cd223 | aurel32 | float64 fa, fb; |
929 | 4c9649a9 | j_mayer | |
930 | f18cd223 | aurel32 | fa = t_to_float64(a); |
931 | f18cd223 | aurel32 | fb = t_to_float64(b); |
932 | f18cd223 | aurel32 | |
933 | f18cd223 | aurel32 | if (float64_le(fa, fb, &FP_STATUS))
|
934 | f18cd223 | aurel32 | return 0x4000000000000000ULL; |
935 | f18cd223 | aurel32 | else
|
936 | f18cd223 | aurel32 | return 0; |
937 | 4c9649a9 | j_mayer | } |
938 | 4c9649a9 | j_mayer | |
939 | f18cd223 | aurel32 | uint64_t helper_cmptlt(uint64_t a, uint64_t b) |
940 | 4c9649a9 | j_mayer | { |
941 | f18cd223 | aurel32 | float64 fa, fb; |
942 | 4c9649a9 | j_mayer | |
943 | f18cd223 | aurel32 | fa = t_to_float64(a); |
944 | f18cd223 | aurel32 | fb = t_to_float64(b); |
945 | f18cd223 | aurel32 | |
946 | f18cd223 | aurel32 | if (float64_lt(fa, fb, &FP_STATUS))
|
947 | f18cd223 | aurel32 | return 0x4000000000000000ULL; |
948 | f18cd223 | aurel32 | else
|
949 | f18cd223 | aurel32 | return 0; |
950 | 4c9649a9 | j_mayer | } |
951 | 4c9649a9 | j_mayer | |
952 | f18cd223 | aurel32 | uint64_t helper_cmpgeq(uint64_t a, uint64_t b) |
953 | 4c9649a9 | j_mayer | { |
954 | f18cd223 | aurel32 | float64 fa, fb; |
955 | 4c9649a9 | j_mayer | |
956 | f18cd223 | aurel32 | fa = g_to_float64(a); |
957 | f18cd223 | aurel32 | fb = g_to_float64(b); |
958 | f18cd223 | aurel32 | |
959 | f18cd223 | aurel32 | if (float64_eq(fa, fb, &FP_STATUS))
|
960 | f18cd223 | aurel32 | return 0x4000000000000000ULL; |
961 | f18cd223 | aurel32 | else
|
962 | f18cd223 | aurel32 | return 0; |
963 | 4c9649a9 | j_mayer | } |
964 | 4c9649a9 | j_mayer | |
965 | f18cd223 | aurel32 | uint64_t helper_cmpgle(uint64_t a, uint64_t b) |
966 | 4c9649a9 | j_mayer | { |
967 | f18cd223 | aurel32 | float64 fa, fb; |
968 | f18cd223 | aurel32 | |
969 | f18cd223 | aurel32 | fa = g_to_float64(a); |
970 | f18cd223 | aurel32 | fb = g_to_float64(b); |
971 | 4c9649a9 | j_mayer | |
972 | f18cd223 | aurel32 | if (float64_le(fa, fb, &FP_STATUS))
|
973 | f18cd223 | aurel32 | return 0x4000000000000000ULL; |
974 | f18cd223 | aurel32 | else
|
975 | f18cd223 | aurel32 | return 0; |
976 | 4c9649a9 | j_mayer | } |
977 | 4c9649a9 | j_mayer | |
978 | f18cd223 | aurel32 | uint64_t helper_cmpglt(uint64_t a, uint64_t b) |
979 | 4c9649a9 | j_mayer | { |
980 | f18cd223 | aurel32 | float64 fa, fb; |
981 | f18cd223 | aurel32 | |
982 | f18cd223 | aurel32 | fa = g_to_float64(a); |
983 | f18cd223 | aurel32 | fb = g_to_float64(b); |
984 | 4c9649a9 | j_mayer | |
985 | f18cd223 | aurel32 | if (float64_lt(fa, fb, &FP_STATUS))
|
986 | f18cd223 | aurel32 | return 0x4000000000000000ULL; |
987 | f18cd223 | aurel32 | else
|
988 | f18cd223 | aurel32 | return 0; |
989 | 4c9649a9 | j_mayer | } |
990 | 4c9649a9 | j_mayer | |
991 | f18cd223 | aurel32 | /* Floating point format conversion */
|
992 | f18cd223 | aurel32 | uint64_t helper_cvtts (uint64_t a) |
993 | 4c9649a9 | j_mayer | { |
994 | f18cd223 | aurel32 | float64 fa; |
995 | f18cd223 | aurel32 | float32 fr; |
996 | 4c9649a9 | j_mayer | |
997 | f18cd223 | aurel32 | fa = t_to_float64(a); |
998 | f18cd223 | aurel32 | fr = float64_to_float32(fa, &FP_STATUS); |
999 | f18cd223 | aurel32 | return float32_to_s(fr);
|
1000 | 4c9649a9 | j_mayer | } |
1001 | 4c9649a9 | j_mayer | |
1002 | f18cd223 | aurel32 | uint64_t helper_cvtst (uint64_t a) |
1003 | 4c9649a9 | j_mayer | { |
1004 | f18cd223 | aurel32 | float32 fa; |
1005 | f18cd223 | aurel32 | float64 fr; |
1006 | f18cd223 | aurel32 | |
1007 | f18cd223 | aurel32 | fa = s_to_float32(a); |
1008 | f18cd223 | aurel32 | fr = float32_to_float64(fa, &FP_STATUS); |
1009 | f18cd223 | aurel32 | return float64_to_t(fr);
|
1010 | 4c9649a9 | j_mayer | } |
1011 | 4c9649a9 | j_mayer | |
1012 | f18cd223 | aurel32 | uint64_t helper_cvtqs (uint64_t a) |
1013 | 4c9649a9 | j_mayer | { |
1014 | f18cd223 | aurel32 | float32 fr = int64_to_float32(a, &FP_STATUS); |
1015 | f18cd223 | aurel32 | return float32_to_s(fr);
|
1016 | 4c9649a9 | j_mayer | } |
1017 | 4c9649a9 | j_mayer | |
1018 | f24518b5 | Richard Henderson | /* Implement float64 to uint64 conversion without saturation -- we must
|
1019 | f24518b5 | Richard Henderson | supply the truncated result. This behaviour is used by the compiler
|
1020 | f24518b5 | Richard Henderson | to get unsigned conversion for free with the same instruction.
|
1021 | f24518b5 | Richard Henderson | |
1022 | f24518b5 | Richard Henderson | The VI flag is set when overflow or inexact exceptions should be raised. */
|
1023 | f24518b5 | Richard Henderson | |
1024 | f24518b5 | Richard Henderson | static inline uint64_t helper_cvttq_internal(uint64_t a, int roundmode, int VI) |
1025 | 4c9649a9 | j_mayer | { |
1026 | f24518b5 | Richard Henderson | uint64_t frac, ret = 0;
|
1027 | f24518b5 | Richard Henderson | uint32_t exp, sign, exc = 0;
|
1028 | f24518b5 | Richard Henderson | int shift;
|
1029 | f24518b5 | Richard Henderson | |
1030 | f24518b5 | Richard Henderson | sign = (a >> 63);
|
1031 | f24518b5 | Richard Henderson | exp = (uint32_t)(a >> 52) & 0x7ff; |
1032 | f24518b5 | Richard Henderson | frac = a & 0xfffffffffffffull;
|
1033 | f24518b5 | Richard Henderson | |
1034 | f24518b5 | Richard Henderson | if (exp == 0) { |
1035 | f24518b5 | Richard Henderson | if (unlikely(frac != 0)) { |
1036 | f24518b5 | Richard Henderson | goto do_underflow;
|
1037 | f24518b5 | Richard Henderson | } |
1038 | f24518b5 | Richard Henderson | } else if (exp == 0x7ff) { |
1039 | f24518b5 | Richard Henderson | exc = (frac ? float_flag_invalid : VI ? float_flag_overflow : 0);
|
1040 | f24518b5 | Richard Henderson | } else {
|
1041 | f24518b5 | Richard Henderson | /* Restore implicit bit. */
|
1042 | f24518b5 | Richard Henderson | frac |= 0x10000000000000ull;
|
1043 | f24518b5 | Richard Henderson | |
1044 | f24518b5 | Richard Henderson | shift = exp - 1023 - 52; |
1045 | f24518b5 | Richard Henderson | if (shift >= 0) { |
1046 | f24518b5 | Richard Henderson | /* In this case the number is so large that we must shift
|
1047 | f24518b5 | Richard Henderson | the fraction left. There is no rounding to do. */
|
1048 | f24518b5 | Richard Henderson | if (shift < 63) { |
1049 | f24518b5 | Richard Henderson | ret = frac << shift; |
1050 | f24518b5 | Richard Henderson | if (VI && (ret >> shift) != frac) {
|
1051 | f24518b5 | Richard Henderson | exc = float_flag_overflow; |
1052 | f24518b5 | Richard Henderson | } |
1053 | f24518b5 | Richard Henderson | } |
1054 | f24518b5 | Richard Henderson | } else {
|
1055 | f24518b5 | Richard Henderson | uint64_t round; |
1056 | f24518b5 | Richard Henderson | |
1057 | f24518b5 | Richard Henderson | /* In this case the number is smaller than the fraction as
|
1058 | f24518b5 | Richard Henderson | represented by the 52 bit number. Here we must think
|
1059 | f24518b5 | Richard Henderson | about rounding the result. Handle this by shifting the
|
1060 | f24518b5 | Richard Henderson | fractional part of the number into the high bits of ROUND.
|
1061 | f24518b5 | Richard Henderson | This will let us efficiently handle round-to-nearest. */
|
1062 | f24518b5 | Richard Henderson | shift = -shift; |
1063 | f24518b5 | Richard Henderson | if (shift < 63) { |
1064 | f24518b5 | Richard Henderson | ret = frac >> shift; |
1065 | f24518b5 | Richard Henderson | round = frac << (64 - shift);
|
1066 | f24518b5 | Richard Henderson | } else {
|
1067 | f24518b5 | Richard Henderson | /* The exponent is so small we shift out everything.
|
1068 | f24518b5 | Richard Henderson | Leave a sticky bit for proper rounding below. */
|
1069 | f24518b5 | Richard Henderson | do_underflow:
|
1070 | f24518b5 | Richard Henderson | round = 1;
|
1071 | f24518b5 | Richard Henderson | } |
1072 | f24518b5 | Richard Henderson | |
1073 | f24518b5 | Richard Henderson | if (round) {
|
1074 | f24518b5 | Richard Henderson | exc = (VI ? float_flag_inexact : 0);
|
1075 | f24518b5 | Richard Henderson | switch (roundmode) {
|
1076 | f24518b5 | Richard Henderson | case float_round_nearest_even:
|
1077 | f24518b5 | Richard Henderson | if (round == (1ull << 63)) { |
1078 | f24518b5 | Richard Henderson | /* Fraction is exactly 0.5; round to even. */
|
1079 | f24518b5 | Richard Henderson | ret += (ret & 1);
|
1080 | f24518b5 | Richard Henderson | } else if (round > (1ull << 63)) { |
1081 | f24518b5 | Richard Henderson | ret += 1;
|
1082 | f24518b5 | Richard Henderson | } |
1083 | f24518b5 | Richard Henderson | break;
|
1084 | f24518b5 | Richard Henderson | case float_round_to_zero:
|
1085 | f24518b5 | Richard Henderson | break;
|
1086 | f24518b5 | Richard Henderson | case float_round_up:
|
1087 | f24518b5 | Richard Henderson | ret += 1 - sign;
|
1088 | f24518b5 | Richard Henderson | break;
|
1089 | f24518b5 | Richard Henderson | case float_round_down:
|
1090 | f24518b5 | Richard Henderson | ret += sign; |
1091 | f24518b5 | Richard Henderson | break;
|
1092 | f24518b5 | Richard Henderson | } |
1093 | f24518b5 | Richard Henderson | } |
1094 | f24518b5 | Richard Henderson | } |
1095 | f24518b5 | Richard Henderson | if (sign) {
|
1096 | f24518b5 | Richard Henderson | ret = -ret; |
1097 | f24518b5 | Richard Henderson | } |
1098 | f24518b5 | Richard Henderson | } |
1099 | f24518b5 | Richard Henderson | if (unlikely(exc)) {
|
1100 | f24518b5 | Richard Henderson | float_raise(exc, &FP_STATUS); |
1101 | f24518b5 | Richard Henderson | } |
1102 | f24518b5 | Richard Henderson | |
1103 | f24518b5 | Richard Henderson | return ret;
|
1104 | f24518b5 | Richard Henderson | } |
1105 | f24518b5 | Richard Henderson | |
1106 | f24518b5 | Richard Henderson | uint64_t helper_cvttq(uint64_t a) |
1107 | f24518b5 | Richard Henderson | { |
1108 | f24518b5 | Richard Henderson | return helper_cvttq_internal(a, FP_STATUS.float_rounding_mode, 1); |
1109 | f24518b5 | Richard Henderson | } |
1110 | f24518b5 | Richard Henderson | |
1111 | f24518b5 | Richard Henderson | uint64_t helper_cvttq_c(uint64_t a) |
1112 | f24518b5 | Richard Henderson | { |
1113 | f24518b5 | Richard Henderson | return helper_cvttq_internal(a, float_round_to_zero, 0); |
1114 | f24518b5 | Richard Henderson | } |
1115 | f24518b5 | Richard Henderson | |
1116 | f24518b5 | Richard Henderson | uint64_t helper_cvttq_svic(uint64_t a) |
1117 | f24518b5 | Richard Henderson | { |
1118 | f24518b5 | Richard Henderson | return helper_cvttq_internal(a, float_round_to_zero, 1); |
1119 | f18cd223 | aurel32 | } |
1120 | 4c9649a9 | j_mayer | |
1121 | f18cd223 | aurel32 | uint64_t helper_cvtqt (uint64_t a) |
1122 | f18cd223 | aurel32 | { |
1123 | f18cd223 | aurel32 | float64 fr = int64_to_float64(a, &FP_STATUS); |
1124 | f18cd223 | aurel32 | return float64_to_t(fr);
|
1125 | 4c9649a9 | j_mayer | } |
1126 | 4c9649a9 | j_mayer | |
1127 | f18cd223 | aurel32 | uint64_t helper_cvtqf (uint64_t a) |
1128 | 4c9649a9 | j_mayer | { |
1129 | f18cd223 | aurel32 | float32 fr = int64_to_float32(a, &FP_STATUS); |
1130 | f18cd223 | aurel32 | return float32_to_f(fr);
|
1131 | 4c9649a9 | j_mayer | } |
1132 | 4c9649a9 | j_mayer | |
1133 | f18cd223 | aurel32 | uint64_t helper_cvtgf (uint64_t a) |
1134 | 4c9649a9 | j_mayer | { |
1135 | f18cd223 | aurel32 | float64 fa; |
1136 | f18cd223 | aurel32 | float32 fr; |
1137 | f18cd223 | aurel32 | |
1138 | f18cd223 | aurel32 | fa = g_to_float64(a); |
1139 | f18cd223 | aurel32 | fr = float64_to_float32(fa, &FP_STATUS); |
1140 | f18cd223 | aurel32 | return float32_to_f(fr);
|
1141 | 4c9649a9 | j_mayer | } |
1142 | 4c9649a9 | j_mayer | |
1143 | f18cd223 | aurel32 | uint64_t helper_cvtgq (uint64_t a) |
1144 | 4c9649a9 | j_mayer | { |
1145 | f18cd223 | aurel32 | float64 fa = g_to_float64(a); |
1146 | f18cd223 | aurel32 | return float64_to_int64_round_to_zero(fa, &FP_STATUS);
|
1147 | 4c9649a9 | j_mayer | } |
1148 | 4c9649a9 | j_mayer | |
1149 | f18cd223 | aurel32 | uint64_t helper_cvtqg (uint64_t a) |
1150 | 4c9649a9 | j_mayer | { |
1151 | f18cd223 | aurel32 | float64 fr; |
1152 | f18cd223 | aurel32 | fr = int64_to_float64(a, &FP_STATUS); |
1153 | f18cd223 | aurel32 | return float64_to_g(fr);
|
1154 | 4c9649a9 | j_mayer | } |
1155 | 4c9649a9 | j_mayer | |
1156 | 8bb6e981 | aurel32 | /* PALcode support special instructions */
|
1157 | 4c9649a9 | j_mayer | #if !defined (CONFIG_USER_ONLY)
|
1158 | 8bb6e981 | aurel32 | void helper_hw_rei (void) |
1159 | 8bb6e981 | aurel32 | { |
1160 | 8bb6e981 | aurel32 | env->pc = env->ipr[IPR_EXC_ADDR] & ~3;
|
1161 | 8bb6e981 | aurel32 | env->ipr[IPR_EXC_ADDR] = env->ipr[IPR_EXC_ADDR] & 1;
|
1162 | ac316ca4 | Richard Henderson | env->intr_flag = 0;
|
1163 | 6910b8f6 | Richard Henderson | env->lock_addr = -1;
|
1164 | 8bb6e981 | aurel32 | /* XXX: re-enable interrupts and memory mapping */
|
1165 | 8bb6e981 | aurel32 | } |
1166 | 8bb6e981 | aurel32 | |
1167 | 8bb6e981 | aurel32 | void helper_hw_ret (uint64_t a)
|
1168 | 8bb6e981 | aurel32 | { |
1169 | 8bb6e981 | aurel32 | env->pc = a & ~3;
|
1170 | 8bb6e981 | aurel32 | env->ipr[IPR_EXC_ADDR] = a & 1;
|
1171 | ac316ca4 | Richard Henderson | env->intr_flag = 0;
|
1172 | 6910b8f6 | Richard Henderson | env->lock_addr = -1;
|
1173 | 8bb6e981 | aurel32 | /* XXX: re-enable interrupts and memory mapping */
|
1174 | 8bb6e981 | aurel32 | } |
1175 | 8bb6e981 | aurel32 | |
1176 | 8bb6e981 | aurel32 | uint64_t helper_mfpr (int iprn, uint64_t val)
|
1177 | 8bb6e981 | aurel32 | { |
1178 | 8bb6e981 | aurel32 | uint64_t tmp; |
1179 | 8bb6e981 | aurel32 | |
1180 | 8bb6e981 | aurel32 | if (cpu_alpha_mfpr(env, iprn, &tmp) == 0) |
1181 | 8bb6e981 | aurel32 | val = tmp; |
1182 | 8bb6e981 | aurel32 | |
1183 | 8bb6e981 | aurel32 | return val;
|
1184 | 8bb6e981 | aurel32 | } |
1185 | 8bb6e981 | aurel32 | |
1186 | 8bb6e981 | aurel32 | void helper_mtpr (int iprn, uint64_t val) |
1187 | 4c9649a9 | j_mayer | { |
1188 | 8bb6e981 | aurel32 | cpu_alpha_mtpr(env, iprn, val, NULL);
|
1189 | 8bb6e981 | aurel32 | } |
1190 | 4c9649a9 | j_mayer | |
1191 | 8bb6e981 | aurel32 | void helper_set_alt_mode (void) |
1192 | 8bb6e981 | aurel32 | { |
1193 | 8bb6e981 | aurel32 | env->saved_mode = env->ps & 0xC;
|
1194 | 8bb6e981 | aurel32 | env->ps = (env->ps & ~0xC) | (env->ipr[IPR_ALT_MODE] & 0xC); |
1195 | 4c9649a9 | j_mayer | } |
1196 | 4c9649a9 | j_mayer | |
1197 | 8bb6e981 | aurel32 | void helper_restore_mode (void) |
1198 | 4c9649a9 | j_mayer | { |
1199 | 8bb6e981 | aurel32 | env->ps = (env->ps & ~0xC) | env->saved_mode;
|
1200 | 4c9649a9 | j_mayer | } |
1201 | 8bb6e981 | aurel32 | |
1202 | 4c9649a9 | j_mayer | #endif
|
1203 | 4c9649a9 | j_mayer | |
1204 | 4c9649a9 | j_mayer | /*****************************************************************************/
|
1205 | 4c9649a9 | j_mayer | /* Softmmu support */
|
1206 | 4c9649a9 | j_mayer | #if !defined (CONFIG_USER_ONLY)
|
1207 | 4c9649a9 | j_mayer | |
1208 | 4c9649a9 | j_mayer | /* XXX: the two following helpers are pure hacks.
|
1209 | 4c9649a9 | j_mayer | * Hopefully, we emulate the PALcode, then we should never see
|
1210 | 4c9649a9 | j_mayer | * HW_LD / HW_ST instructions.
|
1211 | 4c9649a9 | j_mayer | */
|
1212 | 8bb6e981 | aurel32 | uint64_t helper_ld_virt_to_phys (uint64_t virtaddr) |
1213 | 4c9649a9 | j_mayer | { |
1214 | 4c9649a9 | j_mayer | uint64_t tlb_addr, physaddr; |
1215 | 6ebbf390 | j_mayer | int index, mmu_idx;
|
1216 | 4c9649a9 | j_mayer | void *retaddr;
|
1217 | 4c9649a9 | j_mayer | |
1218 | 6ebbf390 | j_mayer | mmu_idx = cpu_mmu_index(env); |
1219 | 8bb6e981 | aurel32 | index = (virtaddr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
|
1220 | 4c9649a9 | j_mayer | redo:
|
1221 | 6ebbf390 | j_mayer | tlb_addr = env->tlb_table[mmu_idx][index].addr_read; |
1222 | 8bb6e981 | aurel32 | if ((virtaddr & TARGET_PAGE_MASK) ==
|
1223 | 4c9649a9 | j_mayer | (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) { |
1224 | 8bb6e981 | aurel32 | physaddr = virtaddr + env->tlb_table[mmu_idx][index].addend; |
1225 | 4c9649a9 | j_mayer | } else {
|
1226 | 4c9649a9 | j_mayer | /* the page is not in the TLB : fill it */
|
1227 | 4c9649a9 | j_mayer | retaddr = GETPC(); |
1228 | 8bb6e981 | aurel32 | tlb_fill(virtaddr, 0, mmu_idx, retaddr);
|
1229 | 4c9649a9 | j_mayer | goto redo;
|
1230 | 4c9649a9 | j_mayer | } |
1231 | 8bb6e981 | aurel32 | return physaddr;
|
1232 | 4c9649a9 | j_mayer | } |
1233 | 4c9649a9 | j_mayer | |
1234 | 8bb6e981 | aurel32 | uint64_t helper_st_virt_to_phys (uint64_t virtaddr) |
1235 | 4c9649a9 | j_mayer | { |
1236 | 4c9649a9 | j_mayer | uint64_t tlb_addr, physaddr; |
1237 | 6ebbf390 | j_mayer | int index, mmu_idx;
|
1238 | 4c9649a9 | j_mayer | void *retaddr;
|
1239 | 4c9649a9 | j_mayer | |
1240 | 6ebbf390 | j_mayer | mmu_idx = cpu_mmu_index(env); |
1241 | 8bb6e981 | aurel32 | index = (virtaddr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
|
1242 | 4c9649a9 | j_mayer | redo:
|
1243 | 6ebbf390 | j_mayer | tlb_addr = env->tlb_table[mmu_idx][index].addr_write; |
1244 | 8bb6e981 | aurel32 | if ((virtaddr & TARGET_PAGE_MASK) ==
|
1245 | 4c9649a9 | j_mayer | (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) { |
1246 | 8bb6e981 | aurel32 | physaddr = virtaddr + env->tlb_table[mmu_idx][index].addend; |
1247 | 4c9649a9 | j_mayer | } else {
|
1248 | 4c9649a9 | j_mayer | /* the page is not in the TLB : fill it */
|
1249 | 4c9649a9 | j_mayer | retaddr = GETPC(); |
1250 | 8bb6e981 | aurel32 | tlb_fill(virtaddr, 1, mmu_idx, retaddr);
|
1251 | 4c9649a9 | j_mayer | goto redo;
|
1252 | 4c9649a9 | j_mayer | } |
1253 | 8bb6e981 | aurel32 | return physaddr;
|
1254 | 8bb6e981 | aurel32 | } |
1255 | 8bb6e981 | aurel32 | |
1256 | 8bb6e981 | aurel32 | void helper_ldl_raw(uint64_t t0, uint64_t t1)
|
1257 | 8bb6e981 | aurel32 | { |
1258 | 8bb6e981 | aurel32 | ldl_raw(t1, t0); |
1259 | 8bb6e981 | aurel32 | } |
1260 | 8bb6e981 | aurel32 | |
1261 | 8bb6e981 | aurel32 | void helper_ldq_raw(uint64_t t0, uint64_t t1)
|
1262 | 8bb6e981 | aurel32 | { |
1263 | 8bb6e981 | aurel32 | ldq_raw(t1, t0); |
1264 | 8bb6e981 | aurel32 | } |
1265 | 8bb6e981 | aurel32 | |
1266 | 8bb6e981 | aurel32 | void helper_ldl_l_raw(uint64_t t0, uint64_t t1)
|
1267 | 8bb6e981 | aurel32 | { |
1268 | 8bb6e981 | aurel32 | env->lock = t1; |
1269 | 8bb6e981 | aurel32 | ldl_raw(t1, t0); |
1270 | 8bb6e981 | aurel32 | } |
1271 | 8bb6e981 | aurel32 | |
1272 | 8bb6e981 | aurel32 | void helper_ldq_l_raw(uint64_t t0, uint64_t t1)
|
1273 | 8bb6e981 | aurel32 | { |
1274 | 8bb6e981 | aurel32 | env->lock = t1; |
1275 | 8bb6e981 | aurel32 | ldl_raw(t1, t0); |
1276 | 8bb6e981 | aurel32 | } |
1277 | 8bb6e981 | aurel32 | |
1278 | 8bb6e981 | aurel32 | void helper_ldl_kernel(uint64_t t0, uint64_t t1)
|
1279 | 8bb6e981 | aurel32 | { |
1280 | 8bb6e981 | aurel32 | ldl_kernel(t1, t0); |
1281 | 8bb6e981 | aurel32 | } |
1282 | 8bb6e981 | aurel32 | |
1283 | 8bb6e981 | aurel32 | void helper_ldq_kernel(uint64_t t0, uint64_t t1)
|
1284 | 8bb6e981 | aurel32 | { |
1285 | 8bb6e981 | aurel32 | ldq_kernel(t1, t0); |
1286 | 8bb6e981 | aurel32 | } |
1287 | 8bb6e981 | aurel32 | |
1288 | 8bb6e981 | aurel32 | void helper_ldl_data(uint64_t t0, uint64_t t1)
|
1289 | 8bb6e981 | aurel32 | { |
1290 | 8bb6e981 | aurel32 | ldl_data(t1, t0); |
1291 | 8bb6e981 | aurel32 | } |
1292 | 8bb6e981 | aurel32 | |
1293 | 8bb6e981 | aurel32 | void helper_ldq_data(uint64_t t0, uint64_t t1)
|
1294 | 8bb6e981 | aurel32 | { |
1295 | 8bb6e981 | aurel32 | ldq_data(t1, t0); |
1296 | 8bb6e981 | aurel32 | } |
1297 | 8bb6e981 | aurel32 | |
1298 | 8bb6e981 | aurel32 | void helper_stl_raw(uint64_t t0, uint64_t t1)
|
1299 | 8bb6e981 | aurel32 | { |
1300 | 8bb6e981 | aurel32 | stl_raw(t1, t0); |
1301 | 8bb6e981 | aurel32 | } |
1302 | 8bb6e981 | aurel32 | |
1303 | 8bb6e981 | aurel32 | void helper_stq_raw(uint64_t t0, uint64_t t1)
|
1304 | 8bb6e981 | aurel32 | { |
1305 | 8bb6e981 | aurel32 | stq_raw(t1, t0); |
1306 | 8bb6e981 | aurel32 | } |
1307 | 8bb6e981 | aurel32 | |
1308 | 8bb6e981 | aurel32 | uint64_t helper_stl_c_raw(uint64_t t0, uint64_t t1) |
1309 | 8bb6e981 | aurel32 | { |
1310 | 8bb6e981 | aurel32 | uint64_t ret; |
1311 | 8bb6e981 | aurel32 | |
1312 | 8bb6e981 | aurel32 | if (t1 == env->lock) {
|
1313 | 8bb6e981 | aurel32 | stl_raw(t1, t0); |
1314 | 8bb6e981 | aurel32 | ret = 0;
|
1315 | 8bb6e981 | aurel32 | } else
|
1316 | 8bb6e981 | aurel32 | ret = 1;
|
1317 | 8bb6e981 | aurel32 | |
1318 | 8bb6e981 | aurel32 | env->lock = 1;
|
1319 | 8bb6e981 | aurel32 | |
1320 | 8bb6e981 | aurel32 | return ret;
|
1321 | 8bb6e981 | aurel32 | } |
1322 | 8bb6e981 | aurel32 | |
1323 | 8bb6e981 | aurel32 | uint64_t helper_stq_c_raw(uint64_t t0, uint64_t t1) |
1324 | 8bb6e981 | aurel32 | { |
1325 | 8bb6e981 | aurel32 | uint64_t ret; |
1326 | 8bb6e981 | aurel32 | |
1327 | 8bb6e981 | aurel32 | if (t1 == env->lock) {
|
1328 | 8bb6e981 | aurel32 | stq_raw(t1, t0); |
1329 | 8bb6e981 | aurel32 | ret = 0;
|
1330 | 8bb6e981 | aurel32 | } else
|
1331 | 8bb6e981 | aurel32 | ret = 1;
|
1332 | 8bb6e981 | aurel32 | |
1333 | 8bb6e981 | aurel32 | env->lock = 1;
|
1334 | 8bb6e981 | aurel32 | |
1335 | 8bb6e981 | aurel32 | return ret;
|
1336 | 4c9649a9 | j_mayer | } |
1337 | 4c9649a9 | j_mayer | |
1338 | 4c9649a9 | j_mayer | #define MMUSUFFIX _mmu
|
1339 | 4c9649a9 | j_mayer | |
1340 | 4c9649a9 | j_mayer | #define SHIFT 0 |
1341 | 4c9649a9 | j_mayer | #include "softmmu_template.h" |
1342 | 4c9649a9 | j_mayer | |
1343 | 4c9649a9 | j_mayer | #define SHIFT 1 |
1344 | 4c9649a9 | j_mayer | #include "softmmu_template.h" |
1345 | 4c9649a9 | j_mayer | |
1346 | 4c9649a9 | j_mayer | #define SHIFT 2 |
1347 | 4c9649a9 | j_mayer | #include "softmmu_template.h" |
1348 | 4c9649a9 | j_mayer | |
1349 | 4c9649a9 | j_mayer | #define SHIFT 3 |
1350 | 4c9649a9 | j_mayer | #include "softmmu_template.h" |
1351 | 4c9649a9 | j_mayer | |
1352 | 4c9649a9 | j_mayer | /* try to fill the TLB and return an exception if error. If retaddr is
|
1353 | 4c9649a9 | j_mayer | NULL, it means that the function was called in C code (i.e. not
|
1354 | 4c9649a9 | j_mayer | from generated code or from helper.c) */
|
1355 | 4c9649a9 | j_mayer | /* XXX: fix it to restore all registers */
|
1356 | 6ebbf390 | j_mayer | void tlb_fill (target_ulong addr, int is_write, int mmu_idx, void *retaddr) |
1357 | 4c9649a9 | j_mayer | { |
1358 | 4c9649a9 | j_mayer | TranslationBlock *tb; |
1359 | 4c9649a9 | j_mayer | CPUState *saved_env; |
1360 | 44f8625d | bellard | unsigned long pc; |
1361 | 4c9649a9 | j_mayer | int ret;
|
1362 | 4c9649a9 | j_mayer | |
1363 | 4c9649a9 | j_mayer | /* XXX: hack to restore env in all cases, even if not called from
|
1364 | 4c9649a9 | j_mayer | generated code */
|
1365 | 4c9649a9 | j_mayer | saved_env = env; |
1366 | 4c9649a9 | j_mayer | env = cpu_single_env; |
1367 | 6ebbf390 | j_mayer | ret = cpu_alpha_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);
|
1368 | 4c9649a9 | j_mayer | if (!likely(ret == 0)) { |
1369 | 4c9649a9 | j_mayer | if (likely(retaddr)) {
|
1370 | 4c9649a9 | j_mayer | /* now we have a real cpu fault */
|
1371 | 44f8625d | bellard | pc = (unsigned long)retaddr; |
1372 | 4c9649a9 | j_mayer | tb = tb_find_pc(pc); |
1373 | 4c9649a9 | j_mayer | if (likely(tb)) {
|
1374 | 4c9649a9 | j_mayer | /* the PC is inside the translated code. It means that we have
|
1375 | 4c9649a9 | j_mayer | a virtual CPU fault */
|
1376 | 4c9649a9 | j_mayer | cpu_restore_state(tb, env, pc, NULL);
|
1377 | 4c9649a9 | j_mayer | } |
1378 | 4c9649a9 | j_mayer | } |
1379 | 4c9649a9 | j_mayer | /* Exception index and error code are already set */
|
1380 | 4c9649a9 | j_mayer | cpu_loop_exit(); |
1381 | 4c9649a9 | j_mayer | } |
1382 | 4c9649a9 | j_mayer | env = saved_env; |
1383 | 4c9649a9 | j_mayer | } |
1384 | 4c9649a9 | j_mayer | |
1385 | 4c9649a9 | j_mayer | #endif |