diff options
Diffstat (limited to 'target-ppc/fpu_helper.c')
| -rw-r--r-- | target-ppc/fpu_helper.c | 56 |
1 files changed, 26 insertions, 30 deletions
diff --git a/target-ppc/fpu_helper.c b/target-ppc/fpu_helper.c index 81db60f1db..6cceffc556 100644 --- a/target-ppc/fpu_helper.c +++ b/target-ppc/fpu_helper.c @@ -63,59 +63,55 @@ static inline int ppc_float64_get_unbiased_exp(float64 f) return ((f >> 52) & 0x7FF) - 1023; } -uint32_t helper_compute_fprf(CPUPPCState *env, uint64_t arg, uint32_t set_fprf) +void helper_compute_fprf(CPUPPCState *env, uint64_t arg) { CPU_DoubleU farg; int isneg; - int ret; + int fprf; farg.ll = arg; isneg = float64_is_neg(farg.d); if (unlikely(float64_is_any_nan(farg.d))) { if (float64_is_signaling_nan(farg.d)) { /* Signaling NaN: flags are undefined */ - ret = 0x00; + fprf = 0x00; } else { /* Quiet NaN */ - ret = 0x11; + fprf = 0x11; } } else if (unlikely(float64_is_infinity(farg.d))) { /* +/- infinity */ if (isneg) { - ret = 0x09; + fprf = 0x09; } else { - ret = 0x05; + fprf = 0x05; } } else { if (float64_is_zero(farg.d)) { /* +/- zero */ if (isneg) { - ret = 0x12; + fprf = 0x12; } else { - ret = 0x02; + fprf = 0x02; } } else { if (isden(farg.d)) { /* Denormalized numbers */ - ret = 0x10; + fprf = 0x10; } else { /* Normalized numbers */ - ret = 0x00; + fprf = 0x00; } if (isneg) { - ret |= 0x08; + fprf |= 0x08; } else { - ret |= 0x04; + fprf |= 0x04; } } } - if (set_fprf) { - /* We update FPSCR_FPRF */ - env->fpscr &= ~(0x1F << FPSCR_FPRF); - env->fpscr |= ret << FPSCR_FPRF; - } - /* We just need fpcc to update Rc1 */ - return ret & 0xF; + /* We update FPSCR_FPRF */ + env->fpscr &= ~(0x1F << FPSCR_FPRF); + env->fpscr |= fprf << FPSCR_FPRF; } /* Floating-point invalid operations exception */ @@ -1853,7 +1849,7 @@ void helper_##name(CPUPPCState *env, uint32_t opcode) \ } \ \ if (sfprf) { \ - helper_compute_fprf(env, xt.fld, sfprf); \ + helper_compute_fprf(env, xt.fld); \ } \ } \ putVSR(xT(opcode), &xt, env); \ @@ -1908,7 +1904,7 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \ } \ \ if (sfprf) { \ - helper_compute_fprf(env, xt.fld, sfprf); \ + helper_compute_fprf(env, xt.fld); \ } \ } \ \ @@ -1962,7 +1958,7 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \ } \ \ if (sfprf) { \ - helper_compute_fprf(env, xt.fld, sfprf); \ + helper_compute_fprf(env, xt.fld); \ } \ } \ \ @@ -2003,7 +1999,7 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \ } \ \ if (sfprf) { \ - helper_compute_fprf(env, xt.fld, sfprf); \ + helper_compute_fprf(env, xt.fld); \ } \ } \ \ @@ -2052,7 +2048,7 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \ } \ \ if (sfprf) { \ - helper_compute_fprf(env, xt.fld, sfprf); \ + helper_compute_fprf(env, xt.fld); \ } \ } \ \ @@ -2102,7 +2098,7 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \ } \ \ if (sfprf) { \ - helper_compute_fprf(env, xt.fld, sfprf); \ + helper_compute_fprf(env, xt.fld); \ } \ } \ \ @@ -2302,7 +2298,7 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \ } \ \ if (sfprf) { \ - helper_compute_fprf(env, xt_out.fld, sfprf); \ + helper_compute_fprf(env, xt_out.fld); \ } \ } \ putVSR(xT(opcode), &xt_out, env); \ @@ -2509,7 +2505,7 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \ } \ if (sfprf) { \ helper_compute_fprf(env, ttp##_to_float64(xt.tfld, \ - &env->fp_status), sfprf); \ + &env->fp_status)); \ } \ } \ \ @@ -2619,7 +2615,7 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \ xt.tfld = helper_frsp(env, xt.tfld); \ } \ if (sfprf) { \ - helper_compute_fprf(env, xt.tfld, sfprf); \ + helper_compute_fprf(env, xt.tfld); \ } \ } \ \ @@ -2674,7 +2670,7 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \ xt.fld = tp##_round_to_int(xb.fld, &env->fp_status); \ } \ if (sfprf) { \ - helper_compute_fprf(env, xt.fld, sfprf); \ + helper_compute_fprf(env, xt.fld); \ } \ } \ \ @@ -2714,7 +2710,7 @@ uint64_t helper_xsrsp(CPUPPCState *env, uint64_t xb) uint64_t xt = helper_frsp(env, xb); - helper_compute_fprf(env, xt, 1); + helper_compute_fprf(env, xt); helper_float_check_status(env); return xt; } |