diff options
Diffstat (limited to 'target/ppc/fpu_helper.c')
| -rw-r--r-- | target/ppc/fpu_helper.c | 50 |
1 files changed, 21 insertions, 29 deletions
diff --git a/target/ppc/fpu_helper.c b/target/ppc/fpu_helper.c index b9ee46e..7758372 100644 --- a/target/ppc/fpu_helper.c +++ b/target/ppc/fpu_helper.c @@ -587,51 +587,43 @@ void helper_reset_fpstatus(CPUPPCState *env) } /* fadd - fadd. */ -uint64_t helper_fadd(CPUPPCState *env, uint64_t arg1, uint64_t arg2) +float64 helper_fadd(CPUPPCState *env, float64 arg1, float64 arg2) { - CPU_DoubleU farg1, farg2; - - farg1.ll = arg1; - farg2.ll = arg2; + float64 ret = float64_add(arg1, arg2, &env->fp_status); + int status = get_float_exception_flags(&env->fp_status); - if (unlikely(float64_is_infinity(farg1.d) && float64_is_infinity(farg2.d) && - float64_is_neg(farg1.d) != float64_is_neg(farg2.d))) { - /* Magnitude subtraction of infinities */ - farg1.ll = float_invalid_op_excp(env, POWERPC_EXCP_FP_VXISI, 1); - } else { - if (unlikely(float64_is_signaling_nan(farg1.d, &env->fp_status) || - float64_is_signaling_nan(farg2.d, &env->fp_status))) { + if (unlikely(status & float_flag_invalid)) { + if (float64_is_infinity(arg1) && float64_is_infinity(arg2)) { + /* Magnitude subtraction of infinities */ + float_invalid_op_excp(env, POWERPC_EXCP_FP_VXISI, 1); + } else if (float64_is_signaling_nan(arg1, &env->fp_status) || + float64_is_signaling_nan(arg2, &env->fp_status)) { /* sNaN addition */ float_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1); } - farg1.d = float64_add(farg1.d, farg2.d, &env->fp_status); } - return farg1.ll; + return ret; } /* fsub - fsub. */ -uint64_t helper_fsub(CPUPPCState *env, uint64_t arg1, uint64_t arg2) +float64 helper_fsub(CPUPPCState *env, float64 arg1, float64 arg2) { - CPU_DoubleU farg1, farg2; - - farg1.ll = arg1; - farg2.ll = arg2; + float64 ret = float64_sub(arg1, arg2, &env->fp_status); + int status = get_float_exception_flags(&env->fp_status); - if (unlikely(float64_is_infinity(farg1.d) && float64_is_infinity(farg2.d) && - float64_is_neg(farg1.d) == float64_is_neg(farg2.d))) { - /* Magnitude subtraction of infinities */ - farg1.ll = float_invalid_op_excp(env, POWERPC_EXCP_FP_VXISI, 1); - } else { - if (unlikely(float64_is_signaling_nan(farg1.d, &env->fp_status) || - float64_is_signaling_nan(farg2.d, &env->fp_status))) { - /* sNaN subtraction */ + if (unlikely(status & float_flag_invalid)) { + if (float64_is_infinity(arg1) && float64_is_infinity(arg2)) { + /* Magnitude subtraction of infinities */ + float_invalid_op_excp(env, POWERPC_EXCP_FP_VXISI, 1); + } else if (float64_is_signaling_nan(arg1, &env->fp_status) || + float64_is_signaling_nan(arg2, &env->fp_status)) { + /* sNaN addition */ float_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1); } - farg1.d = float64_sub(farg1.d, farg2.d, &env->fp_status); } - return farg1.ll; + return ret; } /* fmul - fmul. */ |