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| author | aurel32 | 2008-12-15 18:13:48 +0100 |
|---|---|---|
| committer | aurel32 | 2008-12-15 18:13:48 +0100 |
| commit | 05b936038f18763bbea7fa46f68b33c4a04637f2 (patch) | |
| tree | 68d2df29a5fb29188609c5ecd2f305023b894c9e /target-ppc/op_helper.c | |
| parent | target-ppc: update nip before calling an helper in FP instructions (diff) | |
| download | qemu-05b936038f18763bbea7fa46f68b33c4a04637f2.tar.gz qemu-05b936038f18763bbea7fa46f68b33c4a04637f2.tar.xz qemu-05b936038f18763bbea7fa46f68b33c4a04637f2.zip | |
target-ppc: use a correct value to represent 1.0
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6046 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'target-ppc/op_helper.c')
| -rw-r--r-- | target-ppc/op_helper.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/target-ppc/op_helper.c b/target-ppc/op_helper.c index 7cd589a1ed..28cbc6fe52 100644 --- a/target-ppc/op_helper.c +++ b/target-ppc/op_helper.c @@ -1517,7 +1517,8 @@ uint64_t helper_fsqrt (uint64_t arg) /* fre - fre. */ uint64_t helper_fre (uint64_t arg) { - CPU_DoubleU farg; + CPU_DoubleU fone, farg; + fone.ll = 0x3FF0000000000000ULL; farg.ll = arg; if (unlikely(float64_is_signaling_nan(farg.d))) { @@ -1525,9 +1526,9 @@ uint64_t helper_fre (uint64_t arg) farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN); } else if (unlikely(iszero(farg.d))) { /* Zero reciprocal */ - farg.ll = float_zero_divide_excp(1.0, farg.d); + farg.ll = float_zero_divide_excp(fone.d, farg.d); } else if (likely(isnormal(farg.d))) { - farg.d = float64_div(1.0, farg.d, &env->fp_status); + farg.d = float64_div(fone.d, farg.d, &env->fp_status); } else { if (farg.ll == 0x8000000000000000ULL) { farg.ll = 0xFFF0000000000000ULL; @@ -1547,7 +1548,8 @@ uint64_t helper_fre (uint64_t arg) /* fres - fres. */ uint64_t helper_fres (uint64_t arg) { - CPU_DoubleU farg; + CPU_DoubleU fone, farg; + fone.ll = 0x3FF0000000000000ULL; farg.ll = arg; if (unlikely(float64_is_signaling_nan(farg.d))) { @@ -1555,13 +1557,13 @@ uint64_t helper_fres (uint64_t arg) farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN); } else if (unlikely(iszero(farg.d))) { /* Zero reciprocal */ - farg.ll = float_zero_divide_excp(1.0, farg.d); + farg.ll = float_zero_divide_excp(fone.d, farg.d); } else if (likely(isnormal(farg.d))) { #if USE_PRECISE_EMULATION - farg.d = float64_div(1.0, farg.d, &env->fp_status); + farg.d = float64_div(fone.d, farg.d, &env->fp_status); farg.d = float64_to_float32(farg.d, &env->fp_status); #else - farg.d = float32_div(1.0, farg.d, &env->fp_status); + farg.d = float32_div(fone.d, farg.d, &env->fp_status); #endif } else { if (farg.ll == 0x8000000000000000ULL) { @@ -1582,7 +1584,8 @@ uint64_t helper_fres (uint64_t arg) /* frsqrte - frsqrte. */ uint64_t helper_frsqrte (uint64_t arg) { - CPU_DoubleU farg; + CPU_DoubleU fone, farg; + fone.ll = 0x3FF0000000000000ULL; farg.ll = arg; if (unlikely(float64_is_signaling_nan(farg.d))) { @@ -1593,7 +1596,7 @@ uint64_t helper_frsqrte (uint64_t arg) farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSQRT); } else if (likely(isnormal(farg.d))) { farg.d = float64_sqrt(farg.d, &env->fp_status); - farg.d = float32_div(1.0, farg.d, &env->fp_status); + farg.d = float32_div(fone.d, farg.d, &env->fp_status); } else { if (farg.ll == 0x8000000000000000ULL) { farg.ll = 0xFFF0000000000000ULL; |