changes softfloat API usage, all effected Instrs pass test suite
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@ -149,18 +149,24 @@ uint32_t fcvt_s(uint32_t v1, uint32_t op, uint8_t mode) {
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}
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uint32_t fmadd_s(uint32_t v1, uint32_t v2, uint32_t v3, uint32_t op, uint8_t mode) {
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// Used values for op are:
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// FMADD_S: 0b00
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// FMSUB_S: 0b01
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// FNMADD_S: 0b10
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// FNMSUB_S: 0b11
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// op should be {softfloat_mulAdd_subProd(2), softfloat_mulAdd_subC(1)}
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uint32_t F32_SIGN = 1UL << 31;
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switch(op) {
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case 0: // FMADD_S
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break;
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case 1: // FMSUB_S
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v3 ^= F32_SIGN;
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break;
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case 2: // FNMADD_S
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v1 ^= F32_SIGN;
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v3 ^= F32_SIGN;
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break;
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case 3: // FNMSUB_S
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v1 ^= F32_SIGN;
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break;
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}
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softfloat_roundingMode = rmm_map[mode & 0x7];
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softfloat_exceptionFlags = 0;
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float32_t res = softfloat_mulAddF32(v1, v2, v3, op & 0x1);
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// Do not invert quiet NaN
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if((op & 0b10) && (res.v != quiet_nan32))
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res.v ^= 1ULL << 31;
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float32_t res = softfloat_mulAddF32(v1, v2, v3, 0);
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return res.v;
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}
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