diff options
Diffstat (limited to 'target-alpha/op_helper.c')
| -rw-r--r-- | target-alpha/op_helper.c | 60 |
1 files changed, 34 insertions, 26 deletions
diff --git a/target-alpha/op_helper.c b/target-alpha/op_helper.c index cdfcd95c21..1d7e3a0a85 100644 --- a/target-alpha/op_helper.c +++ b/target-alpha/op_helper.c @@ -345,13 +345,13 @@ uint64_t helper_cmpbge (uint64_t op1, uint64_t op2) /* F floating (VAX) */ static always_inline uint64_t float32_to_f (float32 fa) { - uint32_t a; uint64_t r, exp, mant, sig; + CPU_FloatU a; - a = *(uint32_t*)(&fa); - sig = ((uint64_t)a & 0x80000000) << 32; - exp = (a >> 23) & 0xff; - mant = ((uint64_t)a & 0x007fffff) << 29; + a.f = fa; + sig = ((uint64_t)a.l & 0x80000000) << 32; + exp = (a.l >> 23) & 0xff; + mant = ((uint64_t)a.l & 0x007fffff) << 29; if (exp == 255) { /* NaN or infinity */ @@ -378,7 +378,8 @@ static always_inline uint64_t float32_to_f (float32 fa) static always_inline float32 f_to_float32 (uint64_t a) { - uint32_t r, exp, mant_sig; + uint32_t exp, mant_sig; + CPU_FloatU r; exp = ((a >> 55) & 0x80) | ((a >> 52) & 0x7f); mant_sig = ((a >> 32) & 0x80000000) | ((a >> 29) & 0x007fffff); @@ -390,12 +391,12 @@ static always_inline float32 f_to_float32 (uint64_t a) if (exp < 3) { /* Underflow */ - r = 0; + r.l = 0; } else { - r = ((exp - 2) << 23) | mant_sig; + r.l = ((exp - 2) << 23) | mant_sig; } - return *(float32*)(&a); + return r.f; } uint32_t helper_f_to_memory (uint64_t a) @@ -471,12 +472,13 @@ uint64_t helper_sqrtf (uint64_t t) /* G floating (VAX) */ static always_inline uint64_t float64_to_g (float64 fa) { - uint64_t a, r, exp, mant, sig; + uint64_t r, exp, mant, sig; + CPU_DoubleU a; - a = *(uint64_t*)(&fa); - sig = a & 0x8000000000000000ull; - exp = (a >> 52) & 0x7ff; - mant = a & 0x000fffffffffffffull; + a.d = fa; + sig = a.ll & 0x8000000000000000ull; + exp = (a.ll >> 52) & 0x7ff; + mant = a.ll & 0x000fffffffffffffull; if (exp == 2047) { /* NaN or infinity */ @@ -503,7 +505,8 @@ static always_inline uint64_t float64_to_g (float64 fa) static always_inline float64 g_to_float64 (uint64_t a) { - uint64_t r, exp, mant_sig; + uint64_t exp, mant_sig; + CPU_DoubleU r; exp = (a >> 52) & 0x7ff; mant_sig = a & 0x800fffffffffffffull; @@ -515,12 +518,12 @@ static always_inline float64 g_to_float64 (uint64_t a) if (exp < 3) { /* Underflow */ - r = 0; + r.ll = 0; } else { - r = ((exp - 2) << 52) | mant_sig; + r.ll = ((exp - 2) << 52) | mant_sig; } - return *(float64*)(&a); + return r.d; } uint64_t helper_g_to_memory (uint64_t a) @@ -596,21 +599,22 @@ uint64_t helper_sqrtg (uint64_t a) /* S floating (single) */ static always_inline uint64_t float32_to_s (float32 fa) { - uint32_t a; + CPU_FloatU a; uint64_t r; - a = *(uint32_t*)(&fa); + a.f = fa; - r = (((uint64_t)(a & 0xc0000000)) << 32) | (((uint64_t)(a & 0x3fffffff)) << 29); - if (((a & 0x7f800000) != 0x7f800000) && (!(a & 0x40000000))) + r = (((uint64_t)(a.l & 0xc0000000)) << 32) | (((uint64_t)(a.l & 0x3fffffff)) << 29); + if (((a.l & 0x7f800000) != 0x7f800000) && (!(a.l & 0x40000000))) r |= 0x7ll << 59; return r; } static always_inline float32 s_to_float32 (uint64_t a) { - uint32_t r = ((a >> 32) & 0xc0000000) | ((a >> 29) & 0x3fffffff); - return *(float32*)(&r); + CPU_FloatU r; + r.l = ((a >> 32) & 0xc0000000) | ((a >> 29) & 0x3fffffff); + return r.f; } uint32_t helper_s_to_memory (uint64_t a) @@ -680,13 +684,17 @@ uint64_t helper_sqrts (uint64_t a) static always_inline float64 t_to_float64 (uint64_t a) { /* Memory format is the same as float64 */ - return *(float64*)(&a); + CPU_DoubleU r; + r.ll = a; + return r.d; } static always_inline uint64_t float64_to_t (float64 fa) { /* Memory format is the same as float64 */ - return *(uint64*)(&fa); + CPU_DoubleU r; + r.d = fa; + return r.ll; } uint64_t helper_addt (uint64_t a, uint64_t b) |