root / target-alpha / op_helper.c @ b5f1aa64
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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 | {
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| 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 | b5f1aa64 | Richard Henderson | static void QEMU_NORETURN arith_excp(int exc, uint64_t mask) |
| 36 | b5f1aa64 | Richard Henderson | {
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| 37 | b5f1aa64 | Richard Henderson | env->exception_index = EXCP_ARITH; |
| 38 | b5f1aa64 | Richard Henderson | env->error_code = 0;
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| 39 | b5f1aa64 | Richard Henderson | env->trap_arg0 = exc; |
| 40 | b5f1aa64 | Richard Henderson | env->trap_arg1 = mask; |
| 41 | b5f1aa64 | Richard Henderson | cpu_loop_exit(); |
| 42 | b5f1aa64 | Richard Henderson | } |
| 43 | b5f1aa64 | Richard Henderson | |
| 44 | 6ad02592 | aurel32 | uint64_t helper_load_pcc (void)
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| 45 | 4c9649a9 | j_mayer | {
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| 46 | 18f8e2c0 | Richard Henderson | /* ??? This isn't a timer for which we have any rate info. */
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| 47 | 18f8e2c0 | Richard Henderson | return (uint32_t)cpu_get_real_ticks();
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| 48 | 4c9649a9 | j_mayer | } |
| 49 | 4c9649a9 | j_mayer | |
| 50 | f18cd223 | aurel32 | uint64_t helper_load_fpcr (void)
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| 51 | 4c9649a9 | j_mayer | {
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| 52 | ba0e276d | Richard Henderson | return cpu_alpha_load_fpcr (env);
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| 53 | 4c9649a9 | j_mayer | } |
| 54 | 4c9649a9 | j_mayer | |
| 55 | f18cd223 | aurel32 | void helper_store_fpcr (uint64_t val)
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| 56 | 4c9649a9 | j_mayer | {
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| 57 | ba0e276d | Richard Henderson | cpu_alpha_store_fpcr (env, val); |
| 58 | 4c9649a9 | j_mayer | } |
| 59 | 4c9649a9 | j_mayer | |
| 60 | 04acd307 | aurel32 | uint64_t helper_addqv (uint64_t op1, uint64_t op2) |
| 61 | 4c9649a9 | j_mayer | {
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| 62 | 04acd307 | aurel32 | uint64_t tmp = op1; |
| 63 | 04acd307 | aurel32 | op1 += op2; |
| 64 | 04acd307 | aurel32 | if (unlikely((tmp ^ op2 ^ (-1ULL)) & (tmp ^ op1) & (1ULL << 63))) { |
| 65 | b5f1aa64 | Richard Henderson | arith_excp(EXC_M_IOV, 0);
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| 66 | 4c9649a9 | j_mayer | } |
| 67 | 04acd307 | aurel32 | return op1;
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| 68 | 4c9649a9 | j_mayer | } |
| 69 | 4c9649a9 | j_mayer | |
| 70 | 04acd307 | aurel32 | uint64_t helper_addlv (uint64_t op1, uint64_t op2) |
| 71 | 4c9649a9 | j_mayer | {
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| 72 | 04acd307 | aurel32 | uint64_t tmp = op1; |
| 73 | 04acd307 | aurel32 | op1 = (uint32_t)(op1 + op2); |
| 74 | 04acd307 | aurel32 | if (unlikely((tmp ^ op2 ^ (-1UL)) & (tmp ^ op1) & (1UL << 31))) { |
| 75 | b5f1aa64 | Richard Henderson | arith_excp(EXC_M_IOV, 0);
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| 76 | 4c9649a9 | j_mayer | } |
| 77 | 04acd307 | aurel32 | return op1;
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| 78 | 4c9649a9 | j_mayer | } |
| 79 | 4c9649a9 | j_mayer | |
| 80 | 04acd307 | aurel32 | uint64_t helper_subqv (uint64_t op1, uint64_t op2) |
| 81 | 4c9649a9 | j_mayer | {
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| 82 | ecbb5ea1 | aurel32 | uint64_t res; |
| 83 | ecbb5ea1 | aurel32 | res = op1 - op2; |
| 84 | ecbb5ea1 | aurel32 | if (unlikely((op1 ^ op2) & (res ^ op1) & (1ULL << 63))) { |
| 85 | b5f1aa64 | Richard Henderson | arith_excp(EXC_M_IOV, 0);
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| 86 | 4c9649a9 | j_mayer | } |
| 87 | ecbb5ea1 | aurel32 | return res;
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| 88 | 4c9649a9 | j_mayer | } |
| 89 | 4c9649a9 | j_mayer | |
| 90 | 04acd307 | aurel32 | uint64_t helper_sublv (uint64_t op1, uint64_t op2) |
| 91 | 4c9649a9 | j_mayer | {
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| 92 | ecbb5ea1 | aurel32 | uint32_t res; |
| 93 | ecbb5ea1 | aurel32 | res = op1 - op2; |
| 94 | ecbb5ea1 | aurel32 | if (unlikely((op1 ^ op2) & (res ^ op1) & (1UL << 31))) { |
| 95 | b5f1aa64 | Richard Henderson | arith_excp(EXC_M_IOV, 0);
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| 96 | 4c9649a9 | j_mayer | } |
| 97 | ecbb5ea1 | aurel32 | return res;
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| 98 | 4c9649a9 | j_mayer | } |
| 99 | 4c9649a9 | j_mayer | |
| 100 | 04acd307 | aurel32 | uint64_t helper_mullv (uint64_t op1, uint64_t op2) |
| 101 | 4c9649a9 | j_mayer | {
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| 102 | 04acd307 | aurel32 | int64_t res = (int64_t)op1 * (int64_t)op2; |
| 103 | 4c9649a9 | j_mayer | |
| 104 | 4c9649a9 | j_mayer | if (unlikely((int32_t)res != res)) {
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| 105 | b5f1aa64 | Richard Henderson | arith_excp(EXC_M_IOV, 0);
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| 106 | 4c9649a9 | j_mayer | } |
| 107 | 04acd307 | aurel32 | return (int64_t)((int32_t)res);
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| 108 | 4c9649a9 | j_mayer | } |
| 109 | 4c9649a9 | j_mayer | |
| 110 | 04acd307 | aurel32 | uint64_t helper_mulqv (uint64_t op1, uint64_t op2) |
| 111 | 4c9649a9 | j_mayer | {
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| 112 | e14fe0a9 | j_mayer | uint64_t tl, th; |
| 113 | e14fe0a9 | j_mayer | |
| 114 | 04acd307 | aurel32 | muls64(&tl, &th, op1, op2); |
| 115 | e14fe0a9 | j_mayer | /* If th != 0 && th != -1, then we had an overflow */
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| 116 | e14fe0a9 | j_mayer | if (unlikely((th + 1) > 1)) { |
| 117 | b5f1aa64 | Richard Henderson | arith_excp(EXC_M_IOV, 0);
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| 118 | 4c9649a9 | j_mayer | } |
| 119 | 04acd307 | aurel32 | return tl;
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| 120 | 04acd307 | aurel32 | } |
| 121 | 04acd307 | aurel32 | |
| 122 | 04acd307 | aurel32 | uint64_t helper_umulh (uint64_t op1, uint64_t op2) |
| 123 | 04acd307 | aurel32 | {
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| 124 | 04acd307 | aurel32 | uint64_t tl, th; |
| 125 | 04acd307 | aurel32 | |
| 126 | 04acd307 | aurel32 | mulu64(&tl, &th, op1, op2); |
| 127 | 04acd307 | aurel32 | return th;
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| 128 | 4c9649a9 | j_mayer | } |
| 129 | 4c9649a9 | j_mayer | |
| 130 | ae8ecd42 | aurel32 | uint64_t helper_ctpop (uint64_t arg) |
| 131 | 4c9649a9 | j_mayer | {
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| 132 | ae8ecd42 | aurel32 | return ctpop64(arg);
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| 133 | 4c9649a9 | j_mayer | } |
| 134 | 4c9649a9 | j_mayer | |
| 135 | ae8ecd42 | aurel32 | uint64_t helper_ctlz (uint64_t arg) |
| 136 | 4c9649a9 | j_mayer | {
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| 137 | ae8ecd42 | aurel32 | return clz64(arg);
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| 138 | 4c9649a9 | j_mayer | } |
| 139 | 4c9649a9 | j_mayer | |
| 140 | ae8ecd42 | aurel32 | uint64_t helper_cttz (uint64_t arg) |
| 141 | 4c9649a9 | j_mayer | {
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| 142 | ae8ecd42 | aurel32 | return ctz64(arg);
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| 143 | 4c9649a9 | j_mayer | } |
| 144 | 4c9649a9 | j_mayer | |
| 145 | 636aa200 | Blue Swirl | static inline uint64_t byte_zap(uint64_t op, uint8_t mskb) |
| 146 | 4c9649a9 | j_mayer | {
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| 147 | 4c9649a9 | j_mayer | uint64_t mask; |
| 148 | 4c9649a9 | j_mayer | |
| 149 | 4c9649a9 | j_mayer | mask = 0;
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| 150 | 4c9649a9 | j_mayer | mask |= ((mskb >> 0) & 1) * 0x00000000000000FFULL; |
| 151 | 4c9649a9 | j_mayer | mask |= ((mskb >> 1) & 1) * 0x000000000000FF00ULL; |
| 152 | 4c9649a9 | j_mayer | mask |= ((mskb >> 2) & 1) * 0x0000000000FF0000ULL; |
| 153 | 4c9649a9 | j_mayer | mask |= ((mskb >> 3) & 1) * 0x00000000FF000000ULL; |
| 154 | 4c9649a9 | j_mayer | mask |= ((mskb >> 4) & 1) * 0x000000FF00000000ULL; |
| 155 | 4c9649a9 | j_mayer | mask |= ((mskb >> 5) & 1) * 0x0000FF0000000000ULL; |
| 156 | 4c9649a9 | j_mayer | mask |= ((mskb >> 6) & 1) * 0x00FF000000000000ULL; |
| 157 | 4c9649a9 | j_mayer | mask |= ((mskb >> 7) & 1) * 0xFF00000000000000ULL; |
| 158 | 4c9649a9 | j_mayer | |
| 159 | 4c9649a9 | j_mayer | return op & ~mask;
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| 160 | 4c9649a9 | j_mayer | } |
| 161 | 4c9649a9 | j_mayer | |
| 162 | b3249f63 | aurel32 | uint64_t helper_zap(uint64_t val, uint64_t mask) |
| 163 | 4c9649a9 | j_mayer | {
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| 164 | b3249f63 | aurel32 | return byte_zap(val, mask);
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| 165 | 4c9649a9 | j_mayer | } |
| 166 | 4c9649a9 | j_mayer | |
| 167 | b3249f63 | aurel32 | uint64_t helper_zapnot(uint64_t val, uint64_t mask) |
| 168 | 4c9649a9 | j_mayer | {
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| 169 | b3249f63 | aurel32 | return byte_zap(val, ~mask);
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| 170 | 4c9649a9 | j_mayer | } |
| 171 | 4c9649a9 | j_mayer | |
| 172 | 04acd307 | aurel32 | uint64_t helper_cmpbge (uint64_t op1, uint64_t op2) |
| 173 | 4c9649a9 | j_mayer | {
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| 174 | 4c9649a9 | j_mayer | uint8_t opa, opb, res; |
| 175 | 4c9649a9 | j_mayer | int i;
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| 176 | 4c9649a9 | j_mayer | |
| 177 | 4c9649a9 | j_mayer | res = 0;
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| 178 | 970d622e | aurel32 | for (i = 0; i < 8; i++) { |
| 179 | 04acd307 | aurel32 | opa = op1 >> (i * 8);
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| 180 | 04acd307 | aurel32 | opb = op2 >> (i * 8);
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| 181 | 4c9649a9 | j_mayer | if (opa >= opb)
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| 182 | 4c9649a9 | j_mayer | res |= 1 << i;
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| 183 | 4c9649a9 | j_mayer | } |
| 184 | 04acd307 | aurel32 | return res;
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| 185 | 4c9649a9 | j_mayer | } |
| 186 | 4c9649a9 | j_mayer | |
| 187 | 13e4df99 | Richard Henderson | uint64_t helper_minub8 (uint64_t op1, uint64_t op2) |
| 188 | 13e4df99 | Richard Henderson | {
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| 189 | 13e4df99 | Richard Henderson | uint64_t res = 0;
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| 190 | 13e4df99 | Richard Henderson | uint8_t opa, opb, opr; |
| 191 | 13e4df99 | Richard Henderson | int i;
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| 192 | 13e4df99 | Richard Henderson | |
| 193 | 13e4df99 | Richard Henderson | for (i = 0; i < 8; ++i) { |
| 194 | 13e4df99 | Richard Henderson | opa = op1 >> (i * 8);
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| 195 | 13e4df99 | Richard Henderson | opb = op2 >> (i * 8);
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| 196 | 13e4df99 | Richard Henderson | opr = opa < opb ? opa : opb; |
| 197 | 13e4df99 | Richard Henderson | res |= (uint64_t)opr << (i * 8);
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| 198 | 13e4df99 | Richard Henderson | } |
| 199 | 13e4df99 | Richard Henderson | return res;
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| 200 | 13e4df99 | Richard Henderson | } |
| 201 | 13e4df99 | Richard Henderson | |
| 202 | 13e4df99 | Richard Henderson | uint64_t helper_minsb8 (uint64_t op1, uint64_t op2) |
| 203 | 13e4df99 | Richard Henderson | {
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| 204 | 13e4df99 | Richard Henderson | uint64_t res = 0;
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| 205 | 13e4df99 | Richard Henderson | int8_t opa, opb; |
| 206 | 13e4df99 | Richard Henderson | uint8_t opr; |
| 207 | 13e4df99 | Richard Henderson | int i;
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| 208 | 13e4df99 | Richard Henderson | |
| 209 | 13e4df99 | Richard Henderson | for (i = 0; i < 8; ++i) { |
| 210 | 13e4df99 | Richard Henderson | opa = op1 >> (i * 8);
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| 211 | 13e4df99 | Richard Henderson | opb = op2 >> (i * 8);
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| 212 | 13e4df99 | Richard Henderson | opr = opa < opb ? opa : opb; |
| 213 | 13e4df99 | Richard Henderson | res |= (uint64_t)opr << (i * 8);
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| 214 | 13e4df99 | Richard Henderson | } |
| 215 | 13e4df99 | Richard Henderson | return res;
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| 216 | 13e4df99 | Richard Henderson | } |
| 217 | 13e4df99 | Richard Henderson | |
| 218 | 13e4df99 | Richard Henderson | uint64_t helper_minuw4 (uint64_t op1, uint64_t op2) |
| 219 | 13e4df99 | Richard Henderson | {
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| 220 | 13e4df99 | Richard Henderson | uint64_t res = 0;
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| 221 | 13e4df99 | Richard Henderson | uint16_t opa, opb, opr; |
| 222 | 13e4df99 | Richard Henderson | int i;
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| 223 | 13e4df99 | Richard Henderson | |
| 224 | 13e4df99 | Richard Henderson | for (i = 0; i < 4; ++i) { |
| 225 | 13e4df99 | Richard Henderson | opa = op1 >> (i * 16);
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| 226 | 13e4df99 | Richard Henderson | opb = op2 >> (i * 16);
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| 227 | 13e4df99 | Richard Henderson | opr = opa < opb ? opa : opb; |
| 228 | 13e4df99 | Richard Henderson | res |= (uint64_t)opr << (i * 16);
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| 229 | 13e4df99 | Richard Henderson | } |
| 230 | 13e4df99 | Richard Henderson | return res;
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| 231 | 13e4df99 | Richard Henderson | } |
| 232 | 13e4df99 | Richard Henderson | |
| 233 | 13e4df99 | Richard Henderson | uint64_t helper_minsw4 (uint64_t op1, uint64_t op2) |
| 234 | 13e4df99 | Richard Henderson | {
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| 235 | 13e4df99 | Richard Henderson | uint64_t res = 0;
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| 236 | 13e4df99 | Richard Henderson | int16_t opa, opb; |
| 237 | 13e4df99 | Richard Henderson | uint16_t opr; |
| 238 | 13e4df99 | Richard Henderson | int i;
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| 239 | 13e4df99 | Richard Henderson | |
| 240 | 13e4df99 | Richard Henderson | for (i = 0; i < 4; ++i) { |
| 241 | 13e4df99 | Richard Henderson | opa = op1 >> (i * 16);
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| 242 | 13e4df99 | Richard Henderson | opb = op2 >> (i * 16);
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| 243 | 13e4df99 | Richard Henderson | opr = opa < opb ? opa : opb; |
| 244 | 13e4df99 | Richard Henderson | res |= (uint64_t)opr << (i * 16);
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| 245 | 13e4df99 | Richard Henderson | } |
| 246 | 13e4df99 | Richard Henderson | return res;
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| 247 | 13e4df99 | Richard Henderson | } |
| 248 | 13e4df99 | Richard Henderson | |
| 249 | 13e4df99 | Richard Henderson | uint64_t helper_maxub8 (uint64_t op1, uint64_t op2) |
| 250 | 13e4df99 | Richard Henderson | {
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| 251 | 13e4df99 | Richard Henderson | uint64_t res = 0;
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| 252 | 13e4df99 | Richard Henderson | uint8_t opa, opb, opr; |
| 253 | 13e4df99 | Richard Henderson | int i;
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| 254 | 13e4df99 | Richard Henderson | |
| 255 | 13e4df99 | Richard Henderson | for (i = 0; i < 8; ++i) { |
| 256 | 13e4df99 | Richard Henderson | opa = op1 >> (i * 8);
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| 257 | 13e4df99 | Richard Henderson | opb = op2 >> (i * 8);
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| 258 | 13e4df99 | Richard Henderson | opr = opa > opb ? opa : opb; |
| 259 | 13e4df99 | Richard Henderson | res |= (uint64_t)opr << (i * 8);
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| 260 | 13e4df99 | Richard Henderson | } |
| 261 | 13e4df99 | Richard Henderson | return res;
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| 262 | 13e4df99 | Richard Henderson | } |
| 263 | 13e4df99 | Richard Henderson | |
| 264 | 13e4df99 | Richard Henderson | uint64_t helper_maxsb8 (uint64_t op1, uint64_t op2) |
| 265 | 13e4df99 | Richard Henderson | {
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| 266 | 13e4df99 | Richard Henderson | uint64_t res = 0;
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| 267 | 13e4df99 | Richard Henderson | int8_t opa, opb; |
| 268 | 13e4df99 | Richard Henderson | uint8_t opr; |
| 269 | 13e4df99 | Richard Henderson | int i;
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| 270 | 13e4df99 | Richard Henderson | |
| 271 | 13e4df99 | Richard Henderson | for (i = 0; i < 8; ++i) { |
| 272 | 13e4df99 | Richard Henderson | opa = op1 >> (i * 8);
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| 273 | 13e4df99 | Richard Henderson | opb = op2 >> (i * 8);
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| 274 | 13e4df99 | Richard Henderson | opr = opa > opb ? opa : opb; |
| 275 | 13e4df99 | Richard Henderson | res |= (uint64_t)opr << (i * 8);
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| 276 | 13e4df99 | Richard Henderson | } |
| 277 | 13e4df99 | Richard Henderson | return res;
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| 278 | 13e4df99 | Richard Henderson | } |
| 279 | 13e4df99 | Richard Henderson | |
| 280 | 13e4df99 | Richard Henderson | uint64_t helper_maxuw4 (uint64_t op1, uint64_t op2) |
| 281 | 13e4df99 | Richard Henderson | {
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| 282 | 13e4df99 | Richard Henderson | uint64_t res = 0;
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| 283 | 13e4df99 | Richard Henderson | uint16_t opa, opb, opr; |
| 284 | 13e4df99 | Richard Henderson | int i;
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| 285 | 13e4df99 | Richard Henderson | |
| 286 | 13e4df99 | Richard Henderson | for (i = 0; i < 4; ++i) { |
| 287 | 13e4df99 | Richard Henderson | opa = op1 >> (i * 16);
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| 288 | 13e4df99 | Richard Henderson | opb = op2 >> (i * 16);
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| 289 | 13e4df99 | Richard Henderson | opr = opa > opb ? opa : opb; |
| 290 | 13e4df99 | Richard Henderson | res |= (uint64_t)opr << (i * 16);
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| 291 | 13e4df99 | Richard Henderson | } |
| 292 | 13e4df99 | Richard Henderson | return res;
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| 293 | 13e4df99 | Richard Henderson | } |
| 294 | 13e4df99 | Richard Henderson | |
| 295 | 13e4df99 | Richard Henderson | uint64_t helper_maxsw4 (uint64_t op1, uint64_t op2) |
| 296 | 13e4df99 | Richard Henderson | {
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| 297 | 13e4df99 | Richard Henderson | uint64_t res = 0;
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| 298 | 13e4df99 | Richard Henderson | int16_t opa, opb; |
| 299 | 13e4df99 | Richard Henderson | uint16_t opr; |
| 300 | 13e4df99 | Richard Henderson | int i;
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| 301 | 13e4df99 | Richard Henderson | |
| 302 | 13e4df99 | Richard Henderson | for (i = 0; i < 4; ++i) { |
| 303 | 13e4df99 | Richard Henderson | opa = op1 >> (i * 16);
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| 304 | 13e4df99 | Richard Henderson | opb = op2 >> (i * 16);
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| 305 | 13e4df99 | Richard Henderson | opr = opa > opb ? opa : opb; |
| 306 | 13e4df99 | Richard Henderson | res |= (uint64_t)opr << (i * 16);
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| 307 | 13e4df99 | Richard Henderson | } |
| 308 | 13e4df99 | Richard Henderson | return res;
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| 309 | 13e4df99 | Richard Henderson | } |
| 310 | 13e4df99 | Richard Henderson | |
| 311 | 13e4df99 | Richard Henderson | uint64_t helper_perr (uint64_t op1, uint64_t op2) |
| 312 | 13e4df99 | Richard Henderson | {
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| 313 | 13e4df99 | Richard Henderson | uint64_t res = 0;
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| 314 | 13e4df99 | Richard Henderson | uint8_t opa, opb, opr; |
| 315 | 13e4df99 | Richard Henderson | int i;
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| 316 | 13e4df99 | Richard Henderson | |
| 317 | 13e4df99 | Richard Henderson | for (i = 0; i < 8; ++i) { |
| 318 | 13e4df99 | Richard Henderson | opa = op1 >> (i * 8);
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| 319 | 13e4df99 | Richard Henderson | opb = op2 >> (i * 8);
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| 320 | 13e4df99 | Richard Henderson | if (opa >= opb)
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| 321 | 13e4df99 | Richard Henderson | opr = opa - opb; |
| 322 | 13e4df99 | Richard Henderson | else
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| 323 | 13e4df99 | Richard Henderson | opr = opb - opa; |
| 324 | 13e4df99 | Richard Henderson | res += opr; |
| 325 | 13e4df99 | Richard Henderson | } |
| 326 | 13e4df99 | Richard Henderson | return res;
|
| 327 | 13e4df99 | Richard Henderson | } |
| 328 | 13e4df99 | Richard Henderson | |
| 329 | 13e4df99 | Richard Henderson | uint64_t helper_pklb (uint64_t op1) |
| 330 | 13e4df99 | Richard Henderson | {
|
| 331 | 13e4df99 | Richard Henderson | return (op1 & 0xff) | ((op1 >> 24) & 0xff00); |
| 332 | 13e4df99 | Richard Henderson | } |
| 333 | 13e4df99 | Richard Henderson | |
| 334 | 13e4df99 | Richard Henderson | uint64_t helper_pkwb (uint64_t op1) |
| 335 | 13e4df99 | Richard Henderson | {
|
| 336 | 13e4df99 | Richard Henderson | return ((op1 & 0xff) |
| 337 | 13e4df99 | Richard Henderson | | ((op1 >> 8) & 0xff00) |
| 338 | 13e4df99 | Richard Henderson | | ((op1 >> 16) & 0xff0000) |
| 339 | 13e4df99 | Richard Henderson | | ((op1 >> 24) & 0xff000000)); |
| 340 | 13e4df99 | Richard Henderson | } |
| 341 | 13e4df99 | Richard Henderson | |
| 342 | 13e4df99 | Richard Henderson | uint64_t helper_unpkbl (uint64_t op1) |
| 343 | 13e4df99 | Richard Henderson | {
|
| 344 | 13e4df99 | Richard Henderson | return (op1 & 0xff) | ((op1 & 0xff00) << 24); |
| 345 | 13e4df99 | Richard Henderson | } |
| 346 | 13e4df99 | Richard Henderson | |
| 347 | 13e4df99 | Richard Henderson | uint64_t helper_unpkbw (uint64_t op1) |
| 348 | 13e4df99 | Richard Henderson | {
|
| 349 | 13e4df99 | Richard Henderson | return ((op1 & 0xff) |
| 350 | 13e4df99 | Richard Henderson | | ((op1 & 0xff00) << 8) |
| 351 | 13e4df99 | Richard Henderson | | ((op1 & 0xff0000) << 16) |
| 352 | 13e4df99 | Richard Henderson | | ((op1 & 0xff000000) << 24)); |
| 353 | 13e4df99 | Richard Henderson | } |
| 354 | 13e4df99 | Richard Henderson | |
| 355 | f18cd223 | aurel32 | /* Floating point helpers */
|
| 356 | f18cd223 | aurel32 | |
| 357 | f24518b5 | Richard Henderson | void helper_setroundmode (uint32_t val)
|
| 358 | f24518b5 | Richard Henderson | {
|
| 359 | f24518b5 | Richard Henderson | set_float_rounding_mode(val, &FP_STATUS); |
| 360 | f24518b5 | Richard Henderson | } |
| 361 | f24518b5 | Richard Henderson | |
| 362 | f24518b5 | Richard Henderson | void helper_setflushzero (uint32_t val)
|
| 363 | f24518b5 | Richard Henderson | {
|
| 364 | f24518b5 | Richard Henderson | set_flush_to_zero(val, &FP_STATUS); |
| 365 | f24518b5 | Richard Henderson | } |
| 366 | f24518b5 | Richard Henderson | |
| 367 | f24518b5 | Richard Henderson | void helper_fp_exc_clear (void) |
| 368 | f24518b5 | Richard Henderson | {
|
| 369 | f24518b5 | Richard Henderson | set_float_exception_flags(0, &FP_STATUS);
|
| 370 | f24518b5 | Richard Henderson | } |
| 371 | f24518b5 | Richard Henderson | |
| 372 | f24518b5 | Richard Henderson | uint32_t helper_fp_exc_get (void)
|
| 373 | f24518b5 | Richard Henderson | {
|
| 374 | f24518b5 | Richard Henderson | return get_float_exception_flags(&FP_STATUS);
|
| 375 | f24518b5 | Richard Henderson | } |
| 376 | f24518b5 | Richard Henderson | |
| 377 | f24518b5 | Richard Henderson | /* Raise exceptions for ieee fp insns without software completion.
|
| 378 | f24518b5 | Richard Henderson | In that case there are no exceptions that don't trap; the mask
|
| 379 | f24518b5 | Richard Henderson | doesn't apply. */
|
| 380 | f24518b5 | Richard Henderson | void helper_fp_exc_raise(uint32_t exc, uint32_t regno)
|
| 381 | f24518b5 | Richard Henderson | {
|
| 382 | f24518b5 | Richard Henderson | if (exc) {
|
| 383 | f24518b5 | Richard Henderson | uint32_t hw_exc = 0;
|
| 384 | f24518b5 | Richard Henderson | |
| 385 | f24518b5 | Richard Henderson | if (exc & float_flag_invalid) {
|
| 386 | f24518b5 | Richard Henderson | hw_exc |= EXC_M_INV; |
| 387 | f24518b5 | Richard Henderson | } |
| 388 | f24518b5 | Richard Henderson | if (exc & float_flag_divbyzero) {
|
| 389 | f24518b5 | Richard Henderson | hw_exc |= EXC_M_DZE; |
| 390 | f24518b5 | Richard Henderson | } |
| 391 | f24518b5 | Richard Henderson | if (exc & float_flag_overflow) {
|
| 392 | f24518b5 | Richard Henderson | hw_exc |= EXC_M_FOV; |
| 393 | f24518b5 | Richard Henderson | } |
| 394 | f24518b5 | Richard Henderson | if (exc & float_flag_underflow) {
|
| 395 | f24518b5 | Richard Henderson | hw_exc |= EXC_M_UNF; |
| 396 | f24518b5 | Richard Henderson | } |
| 397 | f24518b5 | Richard Henderson | if (exc & float_flag_inexact) {
|
| 398 | f24518b5 | Richard Henderson | hw_exc |= EXC_M_INE; |
| 399 | f24518b5 | Richard Henderson | } |
| 400 | b5f1aa64 | Richard Henderson | |
| 401 | b5f1aa64 | Richard Henderson | arith_excp(hw_exc, 1ull << regno);
|
| 402 | f24518b5 | Richard Henderson | } |
| 403 | f24518b5 | Richard Henderson | } |
| 404 | f24518b5 | Richard Henderson | |
| 405 | f24518b5 | Richard Henderson | /* Raise exceptions for ieee fp insns with software completion. */
|
| 406 | f24518b5 | Richard Henderson | void helper_fp_exc_raise_s(uint32_t exc, uint32_t regno)
|
| 407 | f24518b5 | Richard Henderson | {
|
| 408 | f24518b5 | Richard Henderson | if (exc) {
|
| 409 | f24518b5 | Richard Henderson | env->fpcr_exc_status |= exc; |
| 410 | f24518b5 | Richard Henderson | |
| 411 | f24518b5 | Richard Henderson | exc &= ~env->fpcr_exc_mask; |
| 412 | f24518b5 | Richard Henderson | if (exc) {
|
| 413 | f24518b5 | Richard Henderson | helper_fp_exc_raise(exc, regno); |
| 414 | f24518b5 | Richard Henderson | } |
| 415 | f24518b5 | Richard Henderson | } |
| 416 | f24518b5 | Richard Henderson | } |
| 417 | f24518b5 | Richard Henderson | |
| 418 | f24518b5 | Richard Henderson | /* Input remapping without software completion. Handle denormal-map-to-zero
|
| 419 | f24518b5 | Richard Henderson | and trap for all other non-finite numbers. */
|
| 420 | f24518b5 | Richard Henderson | uint64_t helper_ieee_input(uint64_t val) |
| 421 | f24518b5 | Richard Henderson | {
|
| 422 | f24518b5 | Richard Henderson | uint32_t exp = (uint32_t)(val >> 52) & 0x7ff; |
| 423 | f24518b5 | Richard Henderson | uint64_t frac = val & 0xfffffffffffffull;
|
| 424 | f24518b5 | Richard Henderson | |
| 425 | f24518b5 | Richard Henderson | if (exp == 0) { |
| 426 | f24518b5 | Richard Henderson | if (frac != 0) { |
| 427 | f24518b5 | Richard Henderson | /* If DNZ is set flush denormals to zero on input. */
|
| 428 | f24518b5 | Richard Henderson | if (env->fpcr_dnz) {
|
| 429 | f24518b5 | Richard Henderson | val &= 1ull << 63; |
| 430 | f24518b5 | Richard Henderson | } else {
|
| 431 | b5f1aa64 | Richard Henderson | arith_excp(EXC_M_UNF, 0);
|
| 432 | f24518b5 | Richard Henderson | } |
| 433 | f24518b5 | Richard Henderson | } |
| 434 | f24518b5 | Richard Henderson | } else if (exp == 0x7ff) { |
| 435 | f24518b5 | Richard Henderson | /* Infinity or NaN. */
|
| 436 | f24518b5 | Richard Henderson | /* ??? I'm not sure these exception bit flags are correct. I do
|
| 437 | f24518b5 | Richard Henderson | know that the Linux kernel, at least, doesn't rely on them and
|
| 438 | f24518b5 | Richard Henderson | just emulates the insn to figure out what exception to use. */
|
| 439 | b5f1aa64 | Richard Henderson | arith_excp(frac ? EXC_M_INV : EXC_M_FOV, 0);
|
| 440 | f24518b5 | Richard Henderson | } |
| 441 | f24518b5 | Richard Henderson | return val;
|
| 442 | f24518b5 | Richard Henderson | } |
| 443 | f24518b5 | Richard Henderson | |
| 444 | f24518b5 | Richard Henderson | /* Similar, but does not trap for infinities. Used for comparisons. */
|
| 445 | f24518b5 | Richard Henderson | uint64_t helper_ieee_input_cmp(uint64_t val) |
| 446 | f24518b5 | Richard Henderson | {
|
| 447 | f24518b5 | Richard Henderson | uint32_t exp = (uint32_t)(val >> 52) & 0x7ff; |
| 448 | f24518b5 | Richard Henderson | uint64_t frac = val & 0xfffffffffffffull;
|
| 449 | f24518b5 | Richard Henderson | |
| 450 | f24518b5 | Richard Henderson | if (exp == 0) { |
| 451 | f24518b5 | Richard Henderson | if (frac != 0) { |
| 452 | f24518b5 | Richard Henderson | /* If DNZ is set flush denormals to zero on input. */
|
| 453 | f24518b5 | Richard Henderson | if (env->fpcr_dnz) {
|
| 454 | f24518b5 | Richard Henderson | val &= 1ull << 63; |
| 455 | f24518b5 | Richard Henderson | } else {
|
| 456 | b5f1aa64 | Richard Henderson | arith_excp(EXC_M_UNF, 0);
|
| 457 | f24518b5 | Richard Henderson | } |
| 458 | f24518b5 | Richard Henderson | } |
| 459 | f24518b5 | Richard Henderson | } else if (exp == 0x7ff && frac) { |
| 460 | f24518b5 | Richard Henderson | /* NaN. */
|
| 461 | b5f1aa64 | Richard Henderson | arith_excp(EXC_M_INV, 0);
|
| 462 | f24518b5 | Richard Henderson | } |
| 463 | f24518b5 | Richard Henderson | return val;
|
| 464 | f24518b5 | Richard Henderson | } |
| 465 | f24518b5 | Richard Henderson | |
| 466 | f24518b5 | Richard Henderson | /* Input remapping with software completion enabled. All we have to do
|
| 467 | f24518b5 | Richard Henderson | is handle denormal-map-to-zero; all other inputs get exceptions as
|
| 468 | f24518b5 | Richard Henderson | needed from the actual operation. */
|
| 469 | f24518b5 | Richard Henderson | uint64_t helper_ieee_input_s(uint64_t val) |
| 470 | f24518b5 | Richard Henderson | {
|
| 471 | f24518b5 | Richard Henderson | if (env->fpcr_dnz) {
|
| 472 | f24518b5 | Richard Henderson | uint32_t exp = (uint32_t)(val >> 52) & 0x7ff; |
| 473 | f24518b5 | Richard Henderson | if (exp == 0) { |
| 474 | f24518b5 | Richard Henderson | val &= 1ull << 63; |
| 475 | f24518b5 | Richard Henderson | } |
| 476 | f24518b5 | Richard Henderson | } |
| 477 | f24518b5 | Richard Henderson | return val;
|
| 478 | f24518b5 | Richard Henderson | } |
| 479 | f24518b5 | Richard Henderson | |
| 480 | f18cd223 | aurel32 | /* F floating (VAX) */
|
| 481 | 636aa200 | Blue Swirl | static inline uint64_t float32_to_f(float32 fa) |
| 482 | 4c9649a9 | j_mayer | {
|
| 483 | f18cd223 | aurel32 | uint64_t r, exp, mant, sig; |
| 484 | e2eb2798 | aurel32 | CPU_FloatU a; |
| 485 | f18cd223 | aurel32 | |
| 486 | e2eb2798 | aurel32 | a.f = fa; |
| 487 | e2eb2798 | aurel32 | sig = ((uint64_t)a.l & 0x80000000) << 32; |
| 488 | e2eb2798 | aurel32 | exp = (a.l >> 23) & 0xff; |
| 489 | e2eb2798 | aurel32 | mant = ((uint64_t)a.l & 0x007fffff) << 29; |
| 490 | f18cd223 | aurel32 | |
| 491 | f18cd223 | aurel32 | if (exp == 255) { |
| 492 | f18cd223 | aurel32 | /* NaN or infinity */
|
| 493 | f18cd223 | aurel32 | r = 1; /* VAX dirty zero */ |
| 494 | f18cd223 | aurel32 | } else if (exp == 0) { |
| 495 | f18cd223 | aurel32 | if (mant == 0) { |
| 496 | f18cd223 | aurel32 | /* Zero */
|
| 497 | f18cd223 | aurel32 | r = 0;
|
| 498 | f18cd223 | aurel32 | } else {
|
| 499 | f18cd223 | aurel32 | /* Denormalized */
|
| 500 | f18cd223 | aurel32 | r = sig | ((exp + 1) << 52) | mant; |
| 501 | f18cd223 | aurel32 | } |
| 502 | f18cd223 | aurel32 | } else {
|
| 503 | f18cd223 | aurel32 | if (exp >= 253) { |
| 504 | f18cd223 | aurel32 | /* Overflow */
|
| 505 | f18cd223 | aurel32 | r = 1; /* VAX dirty zero */ |
| 506 | f18cd223 | aurel32 | } else {
|
| 507 | f18cd223 | aurel32 | r = sig | ((exp + 2) << 52); |
| 508 | f18cd223 | aurel32 | } |
| 509 | f18cd223 | aurel32 | } |
| 510 | f18cd223 | aurel32 | |
| 511 | f18cd223 | aurel32 | return r;
|
| 512 | 4c9649a9 | j_mayer | } |
| 513 | 4c9649a9 | j_mayer | |
| 514 | 636aa200 | Blue Swirl | static inline float32 f_to_float32(uint64_t a) |
| 515 | 4c9649a9 | j_mayer | {
|
| 516 | e2eb2798 | aurel32 | uint32_t exp, mant_sig; |
| 517 | e2eb2798 | aurel32 | CPU_FloatU r; |
| 518 | f18cd223 | aurel32 | |
| 519 | f18cd223 | aurel32 | exp = ((a >> 55) & 0x80) | ((a >> 52) & 0x7f); |
| 520 | f18cd223 | aurel32 | mant_sig = ((a >> 32) & 0x80000000) | ((a >> 29) & 0x007fffff); |
| 521 | f18cd223 | aurel32 | |
| 522 | f18cd223 | aurel32 | if (unlikely(!exp && mant_sig)) {
|
| 523 | f18cd223 | aurel32 | /* Reserved operands / Dirty zero */
|
| 524 | f18cd223 | aurel32 | helper_excp(EXCP_OPCDEC, 0);
|
| 525 | f18cd223 | aurel32 | } |
| 526 | f18cd223 | aurel32 | |
| 527 | f18cd223 | aurel32 | if (exp < 3) { |
| 528 | f18cd223 | aurel32 | /* Underflow */
|
| 529 | e2eb2798 | aurel32 | r.l = 0;
|
| 530 | f18cd223 | aurel32 | } else {
|
| 531 | e2eb2798 | aurel32 | r.l = ((exp - 2) << 23) | mant_sig; |
| 532 | f18cd223 | aurel32 | } |
| 533 | f18cd223 | aurel32 | |
| 534 | e2eb2798 | aurel32 | return r.f;
|
| 535 | 4c9649a9 | j_mayer | } |
| 536 | 4c9649a9 | j_mayer | |
| 537 | f18cd223 | aurel32 | uint32_t helper_f_to_memory (uint64_t a) |
| 538 | 4c9649a9 | j_mayer | {
|
| 539 | f18cd223 | aurel32 | uint32_t r; |
| 540 | f18cd223 | aurel32 | r = (a & 0x00001fffe0000000ull) >> 13; |
| 541 | f18cd223 | aurel32 | r |= (a & 0x07ffe00000000000ull) >> 45; |
| 542 | f18cd223 | aurel32 | r |= (a & 0xc000000000000000ull) >> 48; |
| 543 | f18cd223 | aurel32 | return r;
|
| 544 | f18cd223 | aurel32 | } |
| 545 | 4c9649a9 | j_mayer | |
| 546 | f18cd223 | aurel32 | uint64_t helper_memory_to_f (uint32_t a) |
| 547 | f18cd223 | aurel32 | {
|
| 548 | f18cd223 | aurel32 | uint64_t r; |
| 549 | f18cd223 | aurel32 | r = ((uint64_t)(a & 0x0000c000)) << 48; |
| 550 | f18cd223 | aurel32 | r |= ((uint64_t)(a & 0x003fffff)) << 45; |
| 551 | f18cd223 | aurel32 | r |= ((uint64_t)(a & 0xffff0000)) << 13; |
| 552 | f18cd223 | aurel32 | if (!(a & 0x00004000)) |
| 553 | f18cd223 | aurel32 | r |= 0x7ll << 59; |
| 554 | f18cd223 | aurel32 | return r;
|
| 555 | 4c9649a9 | j_mayer | } |
| 556 | 4c9649a9 | j_mayer | |
| 557 | f24518b5 | Richard Henderson | /* ??? Emulating VAX arithmetic with IEEE arithmetic is wrong. We should
|
| 558 | f24518b5 | Richard Henderson | either implement VAX arithmetic properly or just signal invalid opcode. */
|
| 559 | f24518b5 | Richard Henderson | |
| 560 | f18cd223 | aurel32 | uint64_t helper_addf (uint64_t a, uint64_t b) |
| 561 | 4c9649a9 | j_mayer | {
|
| 562 | f18cd223 | aurel32 | float32 fa, fb, fr; |
| 563 | 4c9649a9 | j_mayer | |
| 564 | f18cd223 | aurel32 | fa = f_to_float32(a); |
| 565 | f18cd223 | aurel32 | fb = f_to_float32(b); |
| 566 | f18cd223 | aurel32 | fr = float32_add(fa, fb, &FP_STATUS); |
| 567 | f18cd223 | aurel32 | return float32_to_f(fr);
|
| 568 | 4c9649a9 | j_mayer | } |
| 569 | 4c9649a9 | j_mayer | |
| 570 | f18cd223 | aurel32 | uint64_t helper_subf (uint64_t a, uint64_t b) |
| 571 | 4c9649a9 | j_mayer | {
|
| 572 | f18cd223 | aurel32 | float32 fa, fb, fr; |
| 573 | 4c9649a9 | j_mayer | |
| 574 | f18cd223 | aurel32 | fa = f_to_float32(a); |
| 575 | f18cd223 | aurel32 | fb = f_to_float32(b); |
| 576 | f18cd223 | aurel32 | fr = float32_sub(fa, fb, &FP_STATUS); |
| 577 | f18cd223 | aurel32 | return float32_to_f(fr);
|
| 578 | 4c9649a9 | j_mayer | } |
| 579 | 4c9649a9 | j_mayer | |
| 580 | f18cd223 | aurel32 | uint64_t helper_mulf (uint64_t a, uint64_t b) |
| 581 | 4c9649a9 | j_mayer | {
|
| 582 | f18cd223 | aurel32 | float32 fa, fb, fr; |
| 583 | 4c9649a9 | j_mayer | |
| 584 | f18cd223 | aurel32 | fa = f_to_float32(a); |
| 585 | f18cd223 | aurel32 | fb = f_to_float32(b); |
| 586 | f18cd223 | aurel32 | fr = float32_mul(fa, fb, &FP_STATUS); |
| 587 | f18cd223 | aurel32 | return float32_to_f(fr);
|
| 588 | 4c9649a9 | j_mayer | } |
| 589 | 4c9649a9 | j_mayer | |
| 590 | f18cd223 | aurel32 | uint64_t helper_divf (uint64_t a, uint64_t b) |
| 591 | 4c9649a9 | j_mayer | {
|
| 592 | f18cd223 | aurel32 | float32 fa, fb, fr; |
| 593 | 4c9649a9 | j_mayer | |
| 594 | f18cd223 | aurel32 | fa = f_to_float32(a); |
| 595 | f18cd223 | aurel32 | fb = f_to_float32(b); |
| 596 | f18cd223 | aurel32 | fr = float32_div(fa, fb, &FP_STATUS); |
| 597 | f18cd223 | aurel32 | return float32_to_f(fr);
|
| 598 | 4c9649a9 | j_mayer | } |
| 599 | 4c9649a9 | j_mayer | |
| 600 | f18cd223 | aurel32 | uint64_t helper_sqrtf (uint64_t t) |
| 601 | 4c9649a9 | j_mayer | {
|
| 602 | f18cd223 | aurel32 | float32 ft, fr; |
| 603 | f18cd223 | aurel32 | |
| 604 | f18cd223 | aurel32 | ft = f_to_float32(t); |
| 605 | f18cd223 | aurel32 | fr = float32_sqrt(ft, &FP_STATUS); |
| 606 | f18cd223 | aurel32 | return float32_to_f(fr);
|
| 607 | 4c9649a9 | j_mayer | } |
| 608 | 4c9649a9 | j_mayer | |
| 609 | f18cd223 | aurel32 | |
| 610 | f18cd223 | aurel32 | /* G floating (VAX) */
|
| 611 | 636aa200 | Blue Swirl | static inline uint64_t float64_to_g(float64 fa) |
| 612 | 4c9649a9 | j_mayer | {
|
| 613 | e2eb2798 | aurel32 | uint64_t r, exp, mant, sig; |
| 614 | e2eb2798 | aurel32 | CPU_DoubleU a; |
| 615 | 4c9649a9 | j_mayer | |
| 616 | e2eb2798 | aurel32 | a.d = fa; |
| 617 | e2eb2798 | aurel32 | sig = a.ll & 0x8000000000000000ull;
|
| 618 | e2eb2798 | aurel32 | exp = (a.ll >> 52) & 0x7ff; |
| 619 | e2eb2798 | aurel32 | mant = a.ll & 0x000fffffffffffffull;
|
| 620 | f18cd223 | aurel32 | |
| 621 | f18cd223 | aurel32 | if (exp == 2047) { |
| 622 | f18cd223 | aurel32 | /* NaN or infinity */
|
| 623 | f18cd223 | aurel32 | r = 1; /* VAX dirty zero */ |
| 624 | f18cd223 | aurel32 | } else if (exp == 0) { |
| 625 | f18cd223 | aurel32 | if (mant == 0) { |
| 626 | f18cd223 | aurel32 | /* Zero */
|
| 627 | f18cd223 | aurel32 | r = 0;
|
| 628 | f18cd223 | aurel32 | } else {
|
| 629 | f18cd223 | aurel32 | /* Denormalized */
|
| 630 | f18cd223 | aurel32 | r = sig | ((exp + 1) << 52) | mant; |
| 631 | f18cd223 | aurel32 | } |
| 632 | f18cd223 | aurel32 | } else {
|
| 633 | f18cd223 | aurel32 | if (exp >= 2045) { |
| 634 | f18cd223 | aurel32 | /* Overflow */
|
| 635 | f18cd223 | aurel32 | r = 1; /* VAX dirty zero */ |
| 636 | f18cd223 | aurel32 | } else {
|
| 637 | f18cd223 | aurel32 | r = sig | ((exp + 2) << 52); |
| 638 | f18cd223 | aurel32 | } |
| 639 | f18cd223 | aurel32 | } |
| 640 | f18cd223 | aurel32 | |
| 641 | f18cd223 | aurel32 | return r;
|
| 642 | 4c9649a9 | j_mayer | } |
| 643 | 4c9649a9 | j_mayer | |
| 644 | 636aa200 | Blue Swirl | static inline float64 g_to_float64(uint64_t a) |
| 645 | 4c9649a9 | j_mayer | {
|
| 646 | e2eb2798 | aurel32 | uint64_t exp, mant_sig; |
| 647 | e2eb2798 | aurel32 | CPU_DoubleU r; |
| 648 | f18cd223 | aurel32 | |
| 649 | f18cd223 | aurel32 | exp = (a >> 52) & 0x7ff; |
| 650 | f18cd223 | aurel32 | mant_sig = a & 0x800fffffffffffffull;
|
| 651 | f18cd223 | aurel32 | |
| 652 | f18cd223 | aurel32 | if (!exp && mant_sig) {
|
| 653 | f18cd223 | aurel32 | /* Reserved operands / Dirty zero */
|
| 654 | f18cd223 | aurel32 | helper_excp(EXCP_OPCDEC, 0);
|
| 655 | f18cd223 | aurel32 | } |
| 656 | 4c9649a9 | j_mayer | |
| 657 | f18cd223 | aurel32 | if (exp < 3) { |
| 658 | f18cd223 | aurel32 | /* Underflow */
|
| 659 | e2eb2798 | aurel32 | r.ll = 0;
|
| 660 | f18cd223 | aurel32 | } else {
|
| 661 | e2eb2798 | aurel32 | r.ll = ((exp - 2) << 52) | mant_sig; |
| 662 | f18cd223 | aurel32 | } |
| 663 | f18cd223 | aurel32 | |
| 664 | e2eb2798 | aurel32 | return r.d;
|
| 665 | 4c9649a9 | j_mayer | } |
| 666 | 4c9649a9 | j_mayer | |
| 667 | f18cd223 | aurel32 | uint64_t helper_g_to_memory (uint64_t a) |
| 668 | 4c9649a9 | j_mayer | {
|
| 669 | f18cd223 | aurel32 | uint64_t r; |
| 670 | f18cd223 | aurel32 | r = (a & 0x000000000000ffffull) << 48; |
| 671 | f18cd223 | aurel32 | r |= (a & 0x00000000ffff0000ull) << 16; |
| 672 | f18cd223 | aurel32 | r |= (a & 0x0000ffff00000000ull) >> 16; |
| 673 | f18cd223 | aurel32 | r |= (a & 0xffff000000000000ull) >> 48; |
| 674 | f18cd223 | aurel32 | return r;
|
| 675 | f18cd223 | aurel32 | } |
| 676 | 4c9649a9 | j_mayer | |
| 677 | f18cd223 | aurel32 | uint64_t helper_memory_to_g (uint64_t a) |
| 678 | f18cd223 | aurel32 | {
|
| 679 | f18cd223 | aurel32 | uint64_t r; |
| 680 | f18cd223 | aurel32 | r = (a & 0x000000000000ffffull) << 48; |
| 681 | f18cd223 | aurel32 | r |= (a & 0x00000000ffff0000ull) << 16; |
| 682 | f18cd223 | aurel32 | r |= (a & 0x0000ffff00000000ull) >> 16; |
| 683 | f18cd223 | aurel32 | r |= (a & 0xffff000000000000ull) >> 48; |
| 684 | f18cd223 | aurel32 | return r;
|
| 685 | 4c9649a9 | j_mayer | } |
| 686 | 4c9649a9 | j_mayer | |
| 687 | f18cd223 | aurel32 | uint64_t helper_addg (uint64_t a, uint64_t b) |
| 688 | 4c9649a9 | j_mayer | {
|
| 689 | f18cd223 | aurel32 | float64 fa, fb, fr; |
| 690 | 4c9649a9 | j_mayer | |
| 691 | f18cd223 | aurel32 | fa = g_to_float64(a); |
| 692 | f18cd223 | aurel32 | fb = g_to_float64(b); |
| 693 | f18cd223 | aurel32 | fr = float64_add(fa, fb, &FP_STATUS); |
| 694 | f18cd223 | aurel32 | return float64_to_g(fr);
|
| 695 | 4c9649a9 | j_mayer | } |
| 696 | 4c9649a9 | j_mayer | |
| 697 | f18cd223 | aurel32 | uint64_t helper_subg (uint64_t a, uint64_t b) |
| 698 | 4c9649a9 | j_mayer | {
|
| 699 | f18cd223 | aurel32 | float64 fa, fb, fr; |
| 700 | 4c9649a9 | j_mayer | |
| 701 | f18cd223 | aurel32 | fa = g_to_float64(a); |
| 702 | f18cd223 | aurel32 | fb = g_to_float64(b); |
| 703 | f18cd223 | aurel32 | fr = float64_sub(fa, fb, &FP_STATUS); |
| 704 | f18cd223 | aurel32 | return float64_to_g(fr);
|
| 705 | 4c9649a9 | j_mayer | } |
| 706 | 4c9649a9 | j_mayer | |
| 707 | f18cd223 | aurel32 | uint64_t helper_mulg (uint64_t a, uint64_t b) |
| 708 | 4c9649a9 | j_mayer | {
|
| 709 | f18cd223 | aurel32 | float64 fa, fb, fr; |
| 710 | 4c9649a9 | j_mayer | |
| 711 | f18cd223 | aurel32 | fa = g_to_float64(a); |
| 712 | f18cd223 | aurel32 | fb = g_to_float64(b); |
| 713 | f18cd223 | aurel32 | fr = float64_mul(fa, fb, &FP_STATUS); |
| 714 | f18cd223 | aurel32 | return float64_to_g(fr);
|
| 715 | 4c9649a9 | j_mayer | } |
| 716 | 4c9649a9 | j_mayer | |
| 717 | f18cd223 | aurel32 | uint64_t helper_divg (uint64_t a, uint64_t b) |
| 718 | 4c9649a9 | j_mayer | {
|
| 719 | f18cd223 | aurel32 | float64 fa, fb, fr; |
| 720 | 4c9649a9 | j_mayer | |
| 721 | f18cd223 | aurel32 | fa = g_to_float64(a); |
| 722 | f18cd223 | aurel32 | fb = g_to_float64(b); |
| 723 | f18cd223 | aurel32 | fr = float64_div(fa, fb, &FP_STATUS); |
| 724 | f18cd223 | aurel32 | return float64_to_g(fr);
|
| 725 | f18cd223 | aurel32 | } |
| 726 | f18cd223 | aurel32 | |
| 727 | f18cd223 | aurel32 | uint64_t helper_sqrtg (uint64_t a) |
| 728 | f18cd223 | aurel32 | {
|
| 729 | f18cd223 | aurel32 | float64 fa, fr; |
| 730 | 4c9649a9 | j_mayer | |
| 731 | f18cd223 | aurel32 | fa = g_to_float64(a); |
| 732 | f18cd223 | aurel32 | fr = float64_sqrt(fa, &FP_STATUS); |
| 733 | f18cd223 | aurel32 | return float64_to_g(fr);
|
| 734 | 4c9649a9 | j_mayer | } |
| 735 | 4c9649a9 | j_mayer | |
| 736 | f18cd223 | aurel32 | |
| 737 | f18cd223 | aurel32 | /* S floating (single) */
|
| 738 | d0af5445 | Richard Henderson | |
| 739 | d0af5445 | Richard Henderson | /* Taken from linux/arch/alpha/kernel/traps.c, s_mem_to_reg. */
|
| 740 | d0af5445 | Richard Henderson | static inline uint64_t float32_to_s_int(uint32_t fi) |
| 741 | d0af5445 | Richard Henderson | {
|
| 742 | d0af5445 | Richard Henderson | uint32_t frac = fi & 0x7fffff;
|
| 743 | d0af5445 | Richard Henderson | uint32_t sign = fi >> 31;
|
| 744 | d0af5445 | Richard Henderson | uint32_t exp_msb = (fi >> 30) & 1; |
| 745 | d0af5445 | Richard Henderson | uint32_t exp_low = (fi >> 23) & 0x7f; |
| 746 | d0af5445 | Richard Henderson | uint32_t exp; |
| 747 | d0af5445 | Richard Henderson | |
| 748 | d0af5445 | Richard Henderson | exp = (exp_msb << 10) | exp_low;
|
| 749 | d0af5445 | Richard Henderson | if (exp_msb) {
|
| 750 | d0af5445 | Richard Henderson | if (exp_low == 0x7f) |
| 751 | d0af5445 | Richard Henderson | exp = 0x7ff;
|
| 752 | d0af5445 | Richard Henderson | } else {
|
| 753 | d0af5445 | Richard Henderson | if (exp_low != 0x00) |
| 754 | d0af5445 | Richard Henderson | exp |= 0x380;
|
| 755 | d0af5445 | Richard Henderson | } |
| 756 | d0af5445 | Richard Henderson | |
| 757 | d0af5445 | Richard Henderson | return (((uint64_t)sign << 63) |
| 758 | d0af5445 | Richard Henderson | | ((uint64_t)exp << 52)
|
| 759 | d0af5445 | Richard Henderson | | ((uint64_t)frac << 29));
|
| 760 | d0af5445 | Richard Henderson | } |
| 761 | d0af5445 | Richard Henderson | |
| 762 | 636aa200 | Blue Swirl | static inline uint64_t float32_to_s(float32 fa) |
| 763 | 4c9649a9 | j_mayer | {
|
| 764 | e2eb2798 | aurel32 | CPU_FloatU a; |
| 765 | e2eb2798 | aurel32 | a.f = fa; |
| 766 | d0af5445 | Richard Henderson | return float32_to_s_int(a.l);
|
| 767 | d0af5445 | Richard Henderson | } |
| 768 | 4c9649a9 | j_mayer | |
| 769 | d0af5445 | Richard Henderson | static inline uint32_t s_to_float32_int(uint64_t a) |
| 770 | d0af5445 | Richard Henderson | {
|
| 771 | d0af5445 | Richard Henderson | return ((a >> 32) & 0xc0000000) | ((a >> 29) & 0x3fffffff); |
| 772 | 4c9649a9 | j_mayer | } |
| 773 | 4c9649a9 | j_mayer | |
| 774 | 636aa200 | Blue Swirl | static inline float32 s_to_float32(uint64_t a) |
| 775 | 4c9649a9 | j_mayer | {
|
| 776 | e2eb2798 | aurel32 | CPU_FloatU r; |
| 777 | d0af5445 | Richard Henderson | r.l = s_to_float32_int(a); |
| 778 | e2eb2798 | aurel32 | return r.f;
|
| 779 | f18cd223 | aurel32 | } |
| 780 | 4c9649a9 | j_mayer | |
| 781 | f18cd223 | aurel32 | uint32_t helper_s_to_memory (uint64_t a) |
| 782 | f18cd223 | aurel32 | {
|
| 783 | d0af5445 | Richard Henderson | return s_to_float32_int(a);
|
| 784 | f18cd223 | aurel32 | } |
| 785 | 4c9649a9 | j_mayer | |
| 786 | f18cd223 | aurel32 | uint64_t helper_memory_to_s (uint32_t a) |
| 787 | f18cd223 | aurel32 | {
|
| 788 | d0af5445 | Richard Henderson | return float32_to_s_int(a);
|
| 789 | 4c9649a9 | j_mayer | } |
| 790 | 4c9649a9 | j_mayer | |
| 791 | f18cd223 | aurel32 | uint64_t helper_adds (uint64_t a, uint64_t b) |
| 792 | 4c9649a9 | j_mayer | {
|
| 793 | f18cd223 | aurel32 | float32 fa, fb, fr; |
| 794 | 4c9649a9 | j_mayer | |
| 795 | f18cd223 | aurel32 | fa = s_to_float32(a); |
| 796 | f18cd223 | aurel32 | fb = s_to_float32(b); |
| 797 | f18cd223 | aurel32 | fr = float32_add(fa, fb, &FP_STATUS); |
| 798 | f18cd223 | aurel32 | return float32_to_s(fr);
|
| 799 | 4c9649a9 | j_mayer | } |
| 800 | 4c9649a9 | j_mayer | |
| 801 | f18cd223 | aurel32 | uint64_t helper_subs (uint64_t a, uint64_t b) |
| 802 | 4c9649a9 | j_mayer | {
|
| 803 | f18cd223 | aurel32 | float32 fa, fb, fr; |
| 804 | 4c9649a9 | j_mayer | |
| 805 | f18cd223 | aurel32 | fa = s_to_float32(a); |
| 806 | f18cd223 | aurel32 | fb = s_to_float32(b); |
| 807 | f18cd223 | aurel32 | fr = float32_sub(fa, fb, &FP_STATUS); |
| 808 | f18cd223 | aurel32 | return float32_to_s(fr);
|
| 809 | 4c9649a9 | j_mayer | } |
| 810 | 4c9649a9 | j_mayer | |
| 811 | f18cd223 | aurel32 | uint64_t helper_muls (uint64_t a, uint64_t b) |
| 812 | 4c9649a9 | j_mayer | {
|
| 813 | f18cd223 | aurel32 | float32 fa, fb, fr; |
| 814 | 4c9649a9 | j_mayer | |
| 815 | f18cd223 | aurel32 | fa = s_to_float32(a); |
| 816 | f18cd223 | aurel32 | fb = s_to_float32(b); |
| 817 | f18cd223 | aurel32 | fr = float32_mul(fa, fb, &FP_STATUS); |
| 818 | f18cd223 | aurel32 | return float32_to_s(fr);
|
| 819 | 4c9649a9 | j_mayer | } |
| 820 | 4c9649a9 | j_mayer | |
| 821 | f18cd223 | aurel32 | uint64_t helper_divs (uint64_t a, uint64_t b) |
| 822 | 4c9649a9 | j_mayer | {
|
| 823 | f18cd223 | aurel32 | float32 fa, fb, fr; |
| 824 | 4c9649a9 | j_mayer | |
| 825 | f18cd223 | aurel32 | fa = s_to_float32(a); |
| 826 | f18cd223 | aurel32 | fb = s_to_float32(b); |
| 827 | f18cd223 | aurel32 | fr = float32_div(fa, fb, &FP_STATUS); |
| 828 | f18cd223 | aurel32 | return float32_to_s(fr);
|
| 829 | 4c9649a9 | j_mayer | } |
| 830 | 4c9649a9 | j_mayer | |
| 831 | f18cd223 | aurel32 | uint64_t helper_sqrts (uint64_t a) |
| 832 | 4c9649a9 | j_mayer | {
|
| 833 | f18cd223 | aurel32 | float32 fa, fr; |
| 834 | 4c9649a9 | j_mayer | |
| 835 | f18cd223 | aurel32 | fa = s_to_float32(a); |
| 836 | f18cd223 | aurel32 | fr = float32_sqrt(fa, &FP_STATUS); |
| 837 | f18cd223 | aurel32 | return float32_to_s(fr);
|
| 838 | 4c9649a9 | j_mayer | } |
| 839 | 4c9649a9 | j_mayer | |
| 840 | f18cd223 | aurel32 | |
| 841 | f18cd223 | aurel32 | /* T floating (double) */
|
| 842 | 636aa200 | Blue Swirl | static inline float64 t_to_float64(uint64_t a) |
| 843 | 4c9649a9 | j_mayer | {
|
| 844 | f18cd223 | aurel32 | /* Memory format is the same as float64 */
|
| 845 | e2eb2798 | aurel32 | CPU_DoubleU r; |
| 846 | e2eb2798 | aurel32 | r.ll = a; |
| 847 | e2eb2798 | aurel32 | return r.d;
|
| 848 | 4c9649a9 | j_mayer | } |
| 849 | 4c9649a9 | j_mayer | |
| 850 | 636aa200 | Blue Swirl | static inline uint64_t float64_to_t(float64 fa) |
| 851 | 4c9649a9 | j_mayer | {
|
| 852 | f18cd223 | aurel32 | /* Memory format is the same as float64 */
|
| 853 | e2eb2798 | aurel32 | CPU_DoubleU r; |
| 854 | e2eb2798 | aurel32 | r.d = fa; |
| 855 | e2eb2798 | aurel32 | return r.ll;
|
| 856 | f18cd223 | aurel32 | } |
| 857 | 4c9649a9 | j_mayer | |
| 858 | f18cd223 | aurel32 | uint64_t helper_addt (uint64_t a, uint64_t b) |
| 859 | f18cd223 | aurel32 | {
|
| 860 | f18cd223 | aurel32 | float64 fa, fb, fr; |
| 861 | 4c9649a9 | j_mayer | |
| 862 | f18cd223 | aurel32 | fa = t_to_float64(a); |
| 863 | f18cd223 | aurel32 | fb = t_to_float64(b); |
| 864 | f18cd223 | aurel32 | fr = float64_add(fa, fb, &FP_STATUS); |
| 865 | f18cd223 | aurel32 | return float64_to_t(fr);
|
| 866 | 4c9649a9 | j_mayer | } |
| 867 | 4c9649a9 | j_mayer | |
| 868 | f18cd223 | aurel32 | uint64_t helper_subt (uint64_t a, uint64_t b) |
| 869 | 4c9649a9 | j_mayer | {
|
| 870 | f18cd223 | aurel32 | float64 fa, fb, fr; |
| 871 | 4c9649a9 | j_mayer | |
| 872 | f18cd223 | aurel32 | fa = t_to_float64(a); |
| 873 | f18cd223 | aurel32 | fb = t_to_float64(b); |
| 874 | f18cd223 | aurel32 | fr = float64_sub(fa, fb, &FP_STATUS); |
| 875 | f18cd223 | aurel32 | return float64_to_t(fr);
|
| 876 | 4c9649a9 | j_mayer | } |
| 877 | 4c9649a9 | j_mayer | |
| 878 | f18cd223 | aurel32 | uint64_t helper_mult (uint64_t a, uint64_t b) |
| 879 | 4c9649a9 | j_mayer | {
|
| 880 | f18cd223 | aurel32 | float64 fa, fb, fr; |
| 881 | 4c9649a9 | j_mayer | |
| 882 | f18cd223 | aurel32 | fa = t_to_float64(a); |
| 883 | f18cd223 | aurel32 | fb = t_to_float64(b); |
| 884 | f18cd223 | aurel32 | fr = float64_mul(fa, fb, &FP_STATUS); |
| 885 | f18cd223 | aurel32 | return float64_to_t(fr);
|
| 886 | 4c9649a9 | j_mayer | } |
| 887 | 4c9649a9 | j_mayer | |
| 888 | f18cd223 | aurel32 | uint64_t helper_divt (uint64_t a, uint64_t b) |
| 889 | 4c9649a9 | j_mayer | {
|
| 890 | f18cd223 | aurel32 | float64 fa, fb, fr; |
| 891 | 4c9649a9 | j_mayer | |
| 892 | f18cd223 | aurel32 | fa = t_to_float64(a); |
| 893 | f18cd223 | aurel32 | fb = t_to_float64(b); |
| 894 | f18cd223 | aurel32 | fr = float64_div(fa, fb, &FP_STATUS); |
| 895 | f18cd223 | aurel32 | return float64_to_t(fr);
|
| 896 | 4c9649a9 | j_mayer | } |
| 897 | 4c9649a9 | j_mayer | |
| 898 | f18cd223 | aurel32 | uint64_t helper_sqrtt (uint64_t a) |
| 899 | 4c9649a9 | j_mayer | {
|
| 900 | f18cd223 | aurel32 | float64 fa, fr; |
| 901 | 4c9649a9 | j_mayer | |
| 902 | f18cd223 | aurel32 | fa = t_to_float64(a); |
| 903 | f18cd223 | aurel32 | fr = float64_sqrt(fa, &FP_STATUS); |
| 904 | f18cd223 | aurel32 | return float64_to_t(fr);
|
| 905 | 4c9649a9 | j_mayer | } |
| 906 | 4c9649a9 | j_mayer | |
| 907 | f18cd223 | aurel32 | /* Comparisons */
|
| 908 | f18cd223 | aurel32 | uint64_t helper_cmptun (uint64_t a, uint64_t b) |
| 909 | 4c9649a9 | j_mayer | {
|
| 910 | f18cd223 | aurel32 | float64 fa, fb; |
| 911 | 4c9649a9 | j_mayer | |
| 912 | f18cd223 | aurel32 | fa = t_to_float64(a); |
| 913 | f18cd223 | aurel32 | fb = t_to_float64(b); |
| 914 | f18cd223 | aurel32 | |
| 915 | a4d2d1a0 | Aurelien Jarno | if (float64_unordered_quiet(fa, fb, &FP_STATUS)) {
|
| 916 | f18cd223 | aurel32 | return 0x4000000000000000ULL; |
| 917 | a4d2d1a0 | Aurelien Jarno | } else {
|
| 918 | f18cd223 | aurel32 | return 0; |
| 919 | a4d2d1a0 | Aurelien Jarno | } |
| 920 | 4c9649a9 | j_mayer | } |
| 921 | 4c9649a9 | j_mayer | |
| 922 | f18cd223 | aurel32 | uint64_t helper_cmpteq(uint64_t a, uint64_t b) |
| 923 | 4c9649a9 | j_mayer | {
|
| 924 | f18cd223 | aurel32 | float64 fa, fb; |
| 925 | 4c9649a9 | j_mayer | |
| 926 | f18cd223 | aurel32 | fa = t_to_float64(a); |
| 927 | f18cd223 | aurel32 | fb = t_to_float64(b); |
| 928 | f18cd223 | aurel32 | |
| 929 | 211315fb | Aurelien Jarno | if (float64_eq_quiet(fa, fb, &FP_STATUS))
|
| 930 | f18cd223 | aurel32 | return 0x4000000000000000ULL; |
| 931 | f18cd223 | aurel32 | else
|
| 932 | f18cd223 | aurel32 | return 0; |
| 933 | 4c9649a9 | j_mayer | } |
| 934 | 4c9649a9 | j_mayer | |
| 935 | f18cd223 | aurel32 | uint64_t helper_cmptle(uint64_t a, uint64_t b) |
| 936 | 4c9649a9 | j_mayer | {
|
| 937 | f18cd223 | aurel32 | float64 fa, fb; |
| 938 | 4c9649a9 | j_mayer | |
| 939 | f18cd223 | aurel32 | fa = t_to_float64(a); |
| 940 | f18cd223 | aurel32 | fb = t_to_float64(b); |
| 941 | f18cd223 | aurel32 | |
| 942 | f18cd223 | aurel32 | if (float64_le(fa, fb, &FP_STATUS))
|
| 943 | f18cd223 | aurel32 | return 0x4000000000000000ULL; |
| 944 | f18cd223 | aurel32 | else
|
| 945 | f18cd223 | aurel32 | return 0; |
| 946 | 4c9649a9 | j_mayer | } |
| 947 | 4c9649a9 | j_mayer | |
| 948 | f18cd223 | aurel32 | uint64_t helper_cmptlt(uint64_t a, uint64_t b) |
| 949 | 4c9649a9 | j_mayer | {
|
| 950 | f18cd223 | aurel32 | float64 fa, fb; |
| 951 | 4c9649a9 | j_mayer | |
| 952 | f18cd223 | aurel32 | fa = t_to_float64(a); |
| 953 | f18cd223 | aurel32 | fb = t_to_float64(b); |
| 954 | f18cd223 | aurel32 | |
| 955 | f18cd223 | aurel32 | if (float64_lt(fa, fb, &FP_STATUS))
|
| 956 | f18cd223 | aurel32 | return 0x4000000000000000ULL; |
| 957 | f18cd223 | aurel32 | else
|
| 958 | f18cd223 | aurel32 | return 0; |
| 959 | 4c9649a9 | j_mayer | } |
| 960 | 4c9649a9 | j_mayer | |
| 961 | f18cd223 | aurel32 | uint64_t helper_cmpgeq(uint64_t a, uint64_t b) |
| 962 | 4c9649a9 | j_mayer | {
|
| 963 | f18cd223 | aurel32 | float64 fa, fb; |
| 964 | 4c9649a9 | j_mayer | |
| 965 | f18cd223 | aurel32 | fa = g_to_float64(a); |
| 966 | f18cd223 | aurel32 | fb = g_to_float64(b); |
| 967 | f18cd223 | aurel32 | |
| 968 | 211315fb | Aurelien Jarno | if (float64_eq_quiet(fa, fb, &FP_STATUS))
|
| 969 | f18cd223 | aurel32 | return 0x4000000000000000ULL; |
| 970 | f18cd223 | aurel32 | else
|
| 971 | f18cd223 | aurel32 | return 0; |
| 972 | 4c9649a9 | j_mayer | } |
| 973 | 4c9649a9 | j_mayer | |
| 974 | f18cd223 | aurel32 | uint64_t helper_cmpgle(uint64_t a, uint64_t b) |
| 975 | 4c9649a9 | j_mayer | {
|
| 976 | f18cd223 | aurel32 | float64 fa, fb; |
| 977 | f18cd223 | aurel32 | |
| 978 | f18cd223 | aurel32 | fa = g_to_float64(a); |
| 979 | f18cd223 | aurel32 | fb = g_to_float64(b); |
| 980 | 4c9649a9 | j_mayer | |
| 981 | f18cd223 | aurel32 | if (float64_le(fa, fb, &FP_STATUS))
|
| 982 | f18cd223 | aurel32 | return 0x4000000000000000ULL; |
| 983 | f18cd223 | aurel32 | else
|
| 984 | f18cd223 | aurel32 | return 0; |
| 985 | 4c9649a9 | j_mayer | } |
| 986 | 4c9649a9 | j_mayer | |
| 987 | f18cd223 | aurel32 | uint64_t helper_cmpglt(uint64_t a, uint64_t b) |
| 988 | 4c9649a9 | j_mayer | {
|
| 989 | f18cd223 | aurel32 | float64 fa, fb; |
| 990 | f18cd223 | aurel32 | |
| 991 | f18cd223 | aurel32 | fa = g_to_float64(a); |
| 992 | f18cd223 | aurel32 | fb = g_to_float64(b); |
| 993 | 4c9649a9 | j_mayer | |
| 994 | f18cd223 | aurel32 | if (float64_lt(fa, fb, &FP_STATUS))
|
| 995 | f18cd223 | aurel32 | return 0x4000000000000000ULL; |
| 996 | f18cd223 | aurel32 | else
|
| 997 | f18cd223 | aurel32 | return 0; |
| 998 | 4c9649a9 | j_mayer | } |
| 999 | 4c9649a9 | j_mayer | |
| 1000 | f18cd223 | aurel32 | /* Floating point format conversion */
|
| 1001 | f18cd223 | aurel32 | uint64_t helper_cvtts (uint64_t a) |
| 1002 | 4c9649a9 | j_mayer | {
|
| 1003 | f18cd223 | aurel32 | float64 fa; |
| 1004 | f18cd223 | aurel32 | float32 fr; |
| 1005 | 4c9649a9 | j_mayer | |
| 1006 | f18cd223 | aurel32 | fa = t_to_float64(a); |
| 1007 | f18cd223 | aurel32 | fr = float64_to_float32(fa, &FP_STATUS); |
| 1008 | f18cd223 | aurel32 | return float32_to_s(fr);
|
| 1009 | 4c9649a9 | j_mayer | } |
| 1010 | 4c9649a9 | j_mayer | |
| 1011 | f18cd223 | aurel32 | uint64_t helper_cvtst (uint64_t a) |
| 1012 | 4c9649a9 | j_mayer | {
|
| 1013 | f18cd223 | aurel32 | float32 fa; |
| 1014 | f18cd223 | aurel32 | float64 fr; |
| 1015 | f18cd223 | aurel32 | |
| 1016 | f18cd223 | aurel32 | fa = s_to_float32(a); |
| 1017 | f18cd223 | aurel32 | fr = float32_to_float64(fa, &FP_STATUS); |
| 1018 | f18cd223 | aurel32 | return float64_to_t(fr);
|
| 1019 | 4c9649a9 | j_mayer | } |
| 1020 | 4c9649a9 | j_mayer | |
| 1021 | f18cd223 | aurel32 | uint64_t helper_cvtqs (uint64_t a) |
| 1022 | 4c9649a9 | j_mayer | {
|
| 1023 | f18cd223 | aurel32 | float32 fr = int64_to_float32(a, &FP_STATUS); |
| 1024 | f18cd223 | aurel32 | return float32_to_s(fr);
|
| 1025 | 4c9649a9 | j_mayer | } |
| 1026 | 4c9649a9 | j_mayer | |
| 1027 | f24518b5 | Richard Henderson | /* Implement float64 to uint64 conversion without saturation -- we must
|
| 1028 | f24518b5 | Richard Henderson | supply the truncated result. This behaviour is used by the compiler
|
| 1029 | f24518b5 | Richard Henderson | to get unsigned conversion for free with the same instruction.
|
| 1030 | f24518b5 | Richard Henderson | |
| 1031 | f24518b5 | Richard Henderson | The VI flag is set when overflow or inexact exceptions should be raised. */
|
| 1032 | f24518b5 | Richard Henderson | |
| 1033 | f24518b5 | Richard Henderson | static inline uint64_t helper_cvttq_internal(uint64_t a, int roundmode, int VI) |
| 1034 | 4c9649a9 | j_mayer | {
|
| 1035 | f24518b5 | Richard Henderson | uint64_t frac, ret = 0;
|
| 1036 | f24518b5 | Richard Henderson | uint32_t exp, sign, exc = 0;
|
| 1037 | f24518b5 | Richard Henderson | int shift;
|
| 1038 | f24518b5 | Richard Henderson | |
| 1039 | f24518b5 | Richard Henderson | sign = (a >> 63);
|
| 1040 | f24518b5 | Richard Henderson | exp = (uint32_t)(a >> 52) & 0x7ff; |
| 1041 | f24518b5 | Richard Henderson | frac = a & 0xfffffffffffffull;
|
| 1042 | f24518b5 | Richard Henderson | |
| 1043 | f24518b5 | Richard Henderson | if (exp == 0) { |
| 1044 | f24518b5 | Richard Henderson | if (unlikely(frac != 0)) { |
| 1045 | f24518b5 | Richard Henderson | goto do_underflow;
|
| 1046 | f24518b5 | Richard Henderson | } |
| 1047 | f24518b5 | Richard Henderson | } else if (exp == 0x7ff) { |
| 1048 | f24518b5 | Richard Henderson | exc = (frac ? float_flag_invalid : VI ? float_flag_overflow : 0);
|
| 1049 | f24518b5 | Richard Henderson | } else {
|
| 1050 | f24518b5 | Richard Henderson | /* Restore implicit bit. */
|
| 1051 | f24518b5 | Richard Henderson | frac |= 0x10000000000000ull;
|
| 1052 | f24518b5 | Richard Henderson | |
| 1053 | f24518b5 | Richard Henderson | shift = exp - 1023 - 52; |
| 1054 | f24518b5 | Richard Henderson | if (shift >= 0) { |
| 1055 | f24518b5 | Richard Henderson | /* In this case the number is so large that we must shift
|
| 1056 | f24518b5 | Richard Henderson | the fraction left. There is no rounding to do. */
|
| 1057 | f24518b5 | Richard Henderson | if (shift < 63) { |
| 1058 | f24518b5 | Richard Henderson | ret = frac << shift; |
| 1059 | f24518b5 | Richard Henderson | if (VI && (ret >> shift) != frac) {
|
| 1060 | f24518b5 | Richard Henderson | exc = float_flag_overflow; |
| 1061 | f24518b5 | Richard Henderson | } |
| 1062 | f24518b5 | Richard Henderson | } |
| 1063 | f24518b5 | Richard Henderson | } else {
|
| 1064 | f24518b5 | Richard Henderson | uint64_t round; |
| 1065 | f24518b5 | Richard Henderson | |
| 1066 | f24518b5 | Richard Henderson | /* In this case the number is smaller than the fraction as
|
| 1067 | f24518b5 | Richard Henderson | represented by the 52 bit number. Here we must think
|
| 1068 | f24518b5 | Richard Henderson | about rounding the result. Handle this by shifting the
|
| 1069 | f24518b5 | Richard Henderson | fractional part of the number into the high bits of ROUND.
|
| 1070 | f24518b5 | Richard Henderson | This will let us efficiently handle round-to-nearest. */
|
| 1071 | f24518b5 | Richard Henderson | shift = -shift; |
| 1072 | f24518b5 | Richard Henderson | if (shift < 63) { |
| 1073 | f24518b5 | Richard Henderson | ret = frac >> shift; |
| 1074 | f24518b5 | Richard Henderson | round = frac << (64 - shift);
|
| 1075 | f24518b5 | Richard Henderson | } else {
|
| 1076 | f24518b5 | Richard Henderson | /* The exponent is so small we shift out everything.
|
| 1077 | f24518b5 | Richard Henderson | Leave a sticky bit for proper rounding below. */
|
| 1078 | f24518b5 | Richard Henderson | do_underflow:
|
| 1079 | f24518b5 | Richard Henderson | round = 1;
|
| 1080 | f24518b5 | Richard Henderson | } |
| 1081 | f24518b5 | Richard Henderson | |
| 1082 | f24518b5 | Richard Henderson | if (round) {
|
| 1083 | f24518b5 | Richard Henderson | exc = (VI ? float_flag_inexact : 0);
|
| 1084 | f24518b5 | Richard Henderson | switch (roundmode) {
|
| 1085 | f24518b5 | Richard Henderson | case float_round_nearest_even:
|
| 1086 | f24518b5 | Richard Henderson | if (round == (1ull << 63)) { |
| 1087 | f24518b5 | Richard Henderson | /* Fraction is exactly 0.5; round to even. */
|
| 1088 | f24518b5 | Richard Henderson | ret += (ret & 1);
|
| 1089 | f24518b5 | Richard Henderson | } else if (round > (1ull << 63)) { |
| 1090 | f24518b5 | Richard Henderson | ret += 1;
|
| 1091 | f24518b5 | Richard Henderson | } |
| 1092 | f24518b5 | Richard Henderson | break;
|
| 1093 | f24518b5 | Richard Henderson | case float_round_to_zero:
|
| 1094 | f24518b5 | Richard Henderson | break;
|
| 1095 | f24518b5 | Richard Henderson | case float_round_up:
|
| 1096 | f24518b5 | Richard Henderson | ret += 1 - sign;
|
| 1097 | f24518b5 | Richard Henderson | break;
|
| 1098 | f24518b5 | Richard Henderson | case float_round_down:
|
| 1099 | f24518b5 | Richard Henderson | ret += sign; |
| 1100 | f24518b5 | Richard Henderson | break;
|
| 1101 | f24518b5 | Richard Henderson | } |
| 1102 | f24518b5 | Richard Henderson | } |
| 1103 | f24518b5 | Richard Henderson | } |
| 1104 | f24518b5 | Richard Henderson | if (sign) {
|
| 1105 | f24518b5 | Richard Henderson | ret = -ret; |
| 1106 | f24518b5 | Richard Henderson | } |
| 1107 | f24518b5 | Richard Henderson | } |
| 1108 | f24518b5 | Richard Henderson | if (unlikely(exc)) {
|
| 1109 | f24518b5 | Richard Henderson | float_raise(exc, &FP_STATUS); |
| 1110 | f24518b5 | Richard Henderson | } |
| 1111 | f24518b5 | Richard Henderson | |
| 1112 | f24518b5 | Richard Henderson | return ret;
|
| 1113 | f24518b5 | Richard Henderson | } |
| 1114 | f24518b5 | Richard Henderson | |
| 1115 | f24518b5 | Richard Henderson | uint64_t helper_cvttq(uint64_t a) |
| 1116 | f24518b5 | Richard Henderson | {
|
| 1117 | f24518b5 | Richard Henderson | return helper_cvttq_internal(a, FP_STATUS.float_rounding_mode, 1); |
| 1118 | f24518b5 | Richard Henderson | } |
| 1119 | f24518b5 | Richard Henderson | |
| 1120 | f24518b5 | Richard Henderson | uint64_t helper_cvttq_c(uint64_t a) |
| 1121 | f24518b5 | Richard Henderson | {
|
| 1122 | f24518b5 | Richard Henderson | return helper_cvttq_internal(a, float_round_to_zero, 0); |
| 1123 | f24518b5 | Richard Henderson | } |
| 1124 | f24518b5 | Richard Henderson | |
| 1125 | f24518b5 | Richard Henderson | uint64_t helper_cvttq_svic(uint64_t a) |
| 1126 | f24518b5 | Richard Henderson | {
|
| 1127 | f24518b5 | Richard Henderson | return helper_cvttq_internal(a, float_round_to_zero, 1); |
| 1128 | f18cd223 | aurel32 | } |
| 1129 | 4c9649a9 | j_mayer | |
| 1130 | f18cd223 | aurel32 | uint64_t helper_cvtqt (uint64_t a) |
| 1131 | f18cd223 | aurel32 | {
|
| 1132 | f18cd223 | aurel32 | float64 fr = int64_to_float64(a, &FP_STATUS); |
| 1133 | f18cd223 | aurel32 | return float64_to_t(fr);
|
| 1134 | 4c9649a9 | j_mayer | } |
| 1135 | 4c9649a9 | j_mayer | |
| 1136 | f18cd223 | aurel32 | uint64_t helper_cvtqf (uint64_t a) |
| 1137 | 4c9649a9 | j_mayer | {
|
| 1138 | f18cd223 | aurel32 | float32 fr = int64_to_float32(a, &FP_STATUS); |
| 1139 | f18cd223 | aurel32 | return float32_to_f(fr);
|
| 1140 | 4c9649a9 | j_mayer | } |
| 1141 | 4c9649a9 | j_mayer | |
| 1142 | f18cd223 | aurel32 | uint64_t helper_cvtgf (uint64_t a) |
| 1143 | 4c9649a9 | j_mayer | {
|
| 1144 | f18cd223 | aurel32 | float64 fa; |
| 1145 | f18cd223 | aurel32 | float32 fr; |
| 1146 | f18cd223 | aurel32 | |
| 1147 | f18cd223 | aurel32 | fa = g_to_float64(a); |
| 1148 | f18cd223 | aurel32 | fr = float64_to_float32(fa, &FP_STATUS); |
| 1149 | f18cd223 | aurel32 | return float32_to_f(fr);
|
| 1150 | 4c9649a9 | j_mayer | } |
| 1151 | 4c9649a9 | j_mayer | |
| 1152 | f18cd223 | aurel32 | uint64_t helper_cvtgq (uint64_t a) |
| 1153 | 4c9649a9 | j_mayer | {
|
| 1154 | f18cd223 | aurel32 | float64 fa = g_to_float64(a); |
| 1155 | f18cd223 | aurel32 | return float64_to_int64_round_to_zero(fa, &FP_STATUS);
|
| 1156 | 4c9649a9 | j_mayer | } |
| 1157 | 4c9649a9 | j_mayer | |
| 1158 | f18cd223 | aurel32 | uint64_t helper_cvtqg (uint64_t a) |
| 1159 | 4c9649a9 | j_mayer | {
|
| 1160 | f18cd223 | aurel32 | float64 fr; |
| 1161 | f18cd223 | aurel32 | fr = int64_to_float64(a, &FP_STATUS); |
| 1162 | f18cd223 | aurel32 | return float64_to_g(fr);
|
| 1163 | 4c9649a9 | j_mayer | } |
| 1164 | 4c9649a9 | j_mayer | |
| 1165 | 8bb6e981 | aurel32 | /* PALcode support special instructions */
|
| 1166 | 4c9649a9 | j_mayer | #if !defined (CONFIG_USER_ONLY)
|
| 1167 | 8bb6e981 | aurel32 | void helper_hw_ret (uint64_t a)
|
| 1168 | 8bb6e981 | aurel32 | {
|
| 1169 | 8bb6e981 | aurel32 | env->pc = a & ~3;
|
| 1170 | 129d8aa5 | Richard Henderson | env->pal_mode = a & 1;
|
| 1171 | ac316ca4 | Richard Henderson | env->intr_flag = 0;
|
| 1172 | 6910b8f6 | Richard Henderson | env->lock_addr = -1;
|
| 1173 | 8bb6e981 | aurel32 | } |
| 1174 | 4c9649a9 | j_mayer | #endif
|
| 1175 | 4c9649a9 | j_mayer | |
| 1176 | 4c9649a9 | j_mayer | /*****************************************************************************/
|
| 1177 | 4c9649a9 | j_mayer | /* Softmmu support */
|
| 1178 | 4c9649a9 | j_mayer | #if !defined (CONFIG_USER_ONLY)
|
| 1179 | 2374e73e | Richard Henderson | uint64_t helper_ldl_phys(uint64_t p) |
| 1180 | 8bb6e981 | aurel32 | {
|
| 1181 | 2374e73e | Richard Henderson | return (int32_t)ldl_phys(p);
|
| 1182 | 8bb6e981 | aurel32 | } |
| 1183 | 8bb6e981 | aurel32 | |
| 1184 | 2374e73e | Richard Henderson | uint64_t helper_ldq_phys(uint64_t p) |
| 1185 | 8bb6e981 | aurel32 | {
|
| 1186 | 2374e73e | Richard Henderson | return ldq_phys(p);
|
| 1187 | 8bb6e981 | aurel32 | } |
| 1188 | 8bb6e981 | aurel32 | |
| 1189 | 2374e73e | Richard Henderson | uint64_t helper_ldl_l_phys(uint64_t p) |
| 1190 | 8bb6e981 | aurel32 | {
|
| 1191 | 2374e73e | Richard Henderson | env->lock_addr = p; |
| 1192 | 2374e73e | Richard Henderson | return env->lock_value = (int32_t)ldl_phys(p);
|
| 1193 | 8bb6e981 | aurel32 | } |
| 1194 | 8bb6e981 | aurel32 | |
| 1195 | 2374e73e | Richard Henderson | uint64_t helper_ldq_l_phys(uint64_t p) |
| 1196 | 8bb6e981 | aurel32 | {
|
| 1197 | 2374e73e | Richard Henderson | env->lock_addr = p; |
| 1198 | 2374e73e | Richard Henderson | return env->lock_value = ldl_phys(p);
|
| 1199 | 8bb6e981 | aurel32 | } |
| 1200 | 8bb6e981 | aurel32 | |
| 1201 | 2374e73e | Richard Henderson | void helper_stl_phys(uint64_t p, uint64_t v)
|
| 1202 | 8bb6e981 | aurel32 | {
|
| 1203 | 2374e73e | Richard Henderson | stl_phys(p, v); |
| 1204 | 8bb6e981 | aurel32 | } |
| 1205 | 8bb6e981 | aurel32 | |
| 1206 | 2374e73e | Richard Henderson | void helper_stq_phys(uint64_t p, uint64_t v)
|
| 1207 | 8bb6e981 | aurel32 | {
|
| 1208 | 2374e73e | Richard Henderson | stq_phys(p, v); |
| 1209 | 8bb6e981 | aurel32 | } |
| 1210 | 8bb6e981 | aurel32 | |
| 1211 | 2374e73e | Richard Henderson | uint64_t helper_stl_c_phys(uint64_t p, uint64_t v) |
| 1212 | 8bb6e981 | aurel32 | {
|
| 1213 | 2374e73e | Richard Henderson | uint64_t ret = 0;
|
| 1214 | 8bb6e981 | aurel32 | |
| 1215 | 2374e73e | Richard Henderson | if (p == env->lock_addr) {
|
| 1216 | 2374e73e | Richard Henderson | int32_t old = ldl_phys(p); |
| 1217 | 2374e73e | Richard Henderson | if (old == (int32_t)env->lock_value) {
|
| 1218 | 2374e73e | Richard Henderson | stl_phys(p, v); |
| 1219 | 2374e73e | Richard Henderson | ret = 1;
|
| 1220 | 2374e73e | Richard Henderson | } |
| 1221 | 2374e73e | Richard Henderson | } |
| 1222 | 2374e73e | Richard Henderson | env->lock_addr = -1;
|
| 1223 | 8bb6e981 | aurel32 | |
| 1224 | 8bb6e981 | aurel32 | return ret;
|
| 1225 | 8bb6e981 | aurel32 | } |
| 1226 | 8bb6e981 | aurel32 | |
| 1227 | 2374e73e | Richard Henderson | uint64_t helper_stq_c_phys(uint64_t p, uint64_t v) |
| 1228 | 8bb6e981 | aurel32 | {
|
| 1229 | 2374e73e | Richard Henderson | uint64_t ret = 0;
|
| 1230 | 8bb6e981 | aurel32 | |
| 1231 | 2374e73e | Richard Henderson | if (p == env->lock_addr) {
|
| 1232 | 2374e73e | Richard Henderson | uint64_t old = ldq_phys(p); |
| 1233 | 2374e73e | Richard Henderson | if (old == env->lock_value) {
|
| 1234 | 2374e73e | Richard Henderson | stq_phys(p, v); |
| 1235 | 2374e73e | Richard Henderson | ret = 1;
|
| 1236 | 2374e73e | Richard Henderson | } |
| 1237 | 2374e73e | Richard Henderson | } |
| 1238 | 2374e73e | Richard Henderson | env->lock_addr = -1;
|
| 1239 | 8bb6e981 | aurel32 | |
| 1240 | 8bb6e981 | aurel32 | return ret;
|
| 1241 | 4c9649a9 | j_mayer | } |
| 1242 | 4c9649a9 | j_mayer | |
| 1243 | 4c9649a9 | j_mayer | #define MMUSUFFIX _mmu
|
| 1244 | 4c9649a9 | j_mayer | |
| 1245 | 4c9649a9 | j_mayer | #define SHIFT 0 |
| 1246 | 4c9649a9 | j_mayer | #include "softmmu_template.h" |
| 1247 | 4c9649a9 | j_mayer | |
| 1248 | 4c9649a9 | j_mayer | #define SHIFT 1 |
| 1249 | 4c9649a9 | j_mayer | #include "softmmu_template.h" |
| 1250 | 4c9649a9 | j_mayer | |
| 1251 | 4c9649a9 | j_mayer | #define SHIFT 2 |
| 1252 | 4c9649a9 | j_mayer | #include "softmmu_template.h" |
| 1253 | 4c9649a9 | j_mayer | |
| 1254 | 4c9649a9 | j_mayer | #define SHIFT 3 |
| 1255 | 4c9649a9 | j_mayer | #include "softmmu_template.h" |
| 1256 | 4c9649a9 | j_mayer | |
| 1257 | 4c9649a9 | j_mayer | /* try to fill the TLB and return an exception if error. If retaddr is
|
| 1258 | 4c9649a9 | j_mayer | NULL, it means that the function was called in C code (i.e. not
|
| 1259 | 4c9649a9 | j_mayer | from generated code or from helper.c) */
|
| 1260 | 4c9649a9 | j_mayer | /* XXX: fix it to restore all registers */
|
| 1261 | 6ebbf390 | j_mayer | void tlb_fill (target_ulong addr, int is_write, int mmu_idx, void *retaddr) |
| 1262 | 4c9649a9 | j_mayer | {
|
| 1263 | 4c9649a9 | j_mayer | TranslationBlock *tb; |
| 1264 | 4c9649a9 | j_mayer | CPUState *saved_env; |
| 1265 | 44f8625d | bellard | unsigned long pc; |
| 1266 | 4c9649a9 | j_mayer | int ret;
|
| 1267 | 4c9649a9 | j_mayer | |
| 1268 | 4c9649a9 | j_mayer | /* XXX: hack to restore env in all cases, even if not called from
|
| 1269 | 4c9649a9 | j_mayer | generated code */
|
| 1270 | 4c9649a9 | j_mayer | saved_env = env; |
| 1271 | 4c9649a9 | j_mayer | env = cpu_single_env; |
| 1272 | 6ebbf390 | j_mayer | ret = cpu_alpha_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);
|
| 1273 | 4c9649a9 | j_mayer | if (!likely(ret == 0)) { |
| 1274 | 4c9649a9 | j_mayer | if (likely(retaddr)) {
|
| 1275 | 4c9649a9 | j_mayer | /* now we have a real cpu fault */
|
| 1276 | 44f8625d | bellard | pc = (unsigned long)retaddr; |
| 1277 | 4c9649a9 | j_mayer | tb = tb_find_pc(pc); |
| 1278 | 4c9649a9 | j_mayer | if (likely(tb)) {
|
| 1279 | 4c9649a9 | j_mayer | /* the PC is inside the translated code. It means that we have
|
| 1280 | 4c9649a9 | j_mayer | a virtual CPU fault */
|
| 1281 | 618ba8e6 | Stefan Weil | cpu_restore_state(tb, env, pc); |
| 1282 | 4c9649a9 | j_mayer | } |
| 1283 | 4c9649a9 | j_mayer | } |
| 1284 | 4c9649a9 | j_mayer | /* Exception index and error code are already set */
|
| 1285 | 4c9649a9 | j_mayer | cpu_loop_exit(); |
| 1286 | 4c9649a9 | j_mayer | } |
| 1287 | 4c9649a9 | j_mayer | env = saved_env; |
| 1288 | 4c9649a9 | j_mayer | } |
| 1289 | 4c9649a9 | j_mayer | |
| 1290 | 4c9649a9 | j_mayer | #endif |