Revision 2958620f target-alpha/int_helper.c
| b/target-alpha/int_helper.c | ||
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| 255 | 255 |
| ((op1 & 0xff0000) << 16) |
| 256 | 256 |
| ((op1 & 0xff000000) << 24)); |
| 257 | 257 |
} |
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uint64_t helper_addqv(CPUAlphaState *env, uint64_t op1, uint64_t op2) |
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{
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uint64_t tmp = op1; |
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op1 += op2; |
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if (unlikely((tmp ^ op2 ^ (-1ULL)) & (tmp ^ op1) & (1ULL << 63))) {
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arith_excp(env, GETPC(), EXC_M_IOV, 0); |
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} |
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return op1; |
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} |
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uint64_t helper_addlv(CPUAlphaState *env, uint64_t op1, uint64_t op2) |
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{
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uint64_t tmp = op1; |
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op1 = (uint32_t)(op1 + op2); |
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if (unlikely((tmp ^ op2 ^ (-1UL)) & (tmp ^ op1) & (1UL << 31))) {
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arith_excp(env, GETPC(), EXC_M_IOV, 0); |
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} |
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return op1; |
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} |
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uint64_t helper_subqv(CPUAlphaState *env, uint64_t op1, uint64_t op2) |
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{
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uint64_t res; |
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res = op1 - op2; |
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if (unlikely((op1 ^ op2) & (res ^ op1) & (1ULL << 63))) {
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arith_excp(env, GETPC(), EXC_M_IOV, 0); |
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} |
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return res; |
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} |
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uint64_t helper_sublv(CPUAlphaState *env, uint64_t op1, uint64_t op2) |
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{
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uint32_t res; |
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res = op1 - op2; |
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if (unlikely((op1 ^ op2) & (res ^ op1) & (1UL << 31))) {
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arith_excp(env, GETPC(), EXC_M_IOV, 0); |
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} |
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return res; |
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} |
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uint64_t helper_mullv(CPUAlphaState *env, uint64_t op1, uint64_t op2) |
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{
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int64_t res = (int64_t)op1 * (int64_t)op2; |
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if (unlikely((int32_t)res != res)) {
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arith_excp(env, GETPC(), EXC_M_IOV, 0); |
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} |
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return (int64_t)((int32_t)res); |
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} |
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uint64_t helper_mulqv(CPUAlphaState *env, uint64_t op1, uint64_t op2) |
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{
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uint64_t tl, th; |
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muls64(&tl, &th, op1, op2); |
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/* If th != 0 && th != -1, then we had an overflow */ |
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if (unlikely((th + 1) > 1)) {
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arith_excp(env, GETPC(), EXC_M_IOV, 0); |
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} |
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return tl; |
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} |
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