gwj / at91sam9263 · Commits

Commit 05b936038f18763bbea7fa46f68b33c4a04637f2

Authored by aurel32
1 parent eb44b959

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
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Showing 1 changed file with 12 additions and 9 deletions
target-ppc/op_helper.c
  View file @05b9360
... ... @@ -1517,7 +1517,8 @@ uint64_t helper_fsqrt (uint64_t arg)
1517 1517 /* fre - fre. */
1518 1518 uint64_t helper_fre (uint64_t arg)
1519 1519 {
1520   - CPU_DoubleU farg;
  1520 + CPU_DoubleU fone, farg;
  1521 + fone.ll = 0x3FF0000000000000ULL;
1521 1522 farg.ll = arg;
1522 1523  
1523 1524 if (unlikely(float64_is_signaling_nan(farg.d))) {
... ... @@ -1525,9 +1526,9 @@ uint64_t helper_fre (uint64_t arg)
1525 1526 farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
1526 1527 } else if (unlikely(iszero(farg.d))) {
1527 1528 /* Zero reciprocal */
1528   - farg.ll = float_zero_divide_excp(1.0, farg.d);
  1529 + farg.ll = float_zero_divide_excp(fone.d, farg.d);
1529 1530 } else if (likely(isnormal(farg.d))) {
1530   - farg.d = float64_div(1.0, farg.d, &env->fp_status);
  1531 + farg.d = float64_div(fone.d, farg.d, &env->fp_status);
1531 1532 } else {
1532 1533 if (farg.ll == 0x8000000000000000ULL) {
1533 1534 farg.ll = 0xFFF0000000000000ULL;
... ... @@ -1547,7 +1548,8 @@ uint64_t helper_fre (uint64_t arg)
1547 1548 /* fres - fres. */
1548 1549 uint64_t helper_fres (uint64_t arg)
1549 1550 {
1550   - CPU_DoubleU farg;
  1551 + CPU_DoubleU fone, farg;
  1552 + fone.ll = 0x3FF0000000000000ULL;
1551 1553 farg.ll = arg;
1552 1554  
1553 1555 if (unlikely(float64_is_signaling_nan(farg.d))) {
... ... @@ -1555,13 +1557,13 @@ uint64_t helper_fres (uint64_t arg)
1555 1557 farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
1556 1558 } else if (unlikely(iszero(farg.d))) {
1557 1559 /* Zero reciprocal */
1558   - farg.ll = float_zero_divide_excp(1.0, farg.d);
  1560 + farg.ll = float_zero_divide_excp(fone.d, farg.d);
1559 1561 } else if (likely(isnormal(farg.d))) {
1560 1562 #if USE_PRECISE_EMULATION
1561   - farg.d = float64_div(1.0, farg.d, &env->fp_status);
  1563 + farg.d = float64_div(fone.d, farg.d, &env->fp_status);
1562 1564 farg.d = float64_to_float32(farg.d, &env->fp_status);
1563 1565 #else
1564   - farg.d = float32_div(1.0, farg.d, &env->fp_status);
  1566 + farg.d = float32_div(fone.d, farg.d, &env->fp_status);
1565 1567 #endif
1566 1568 } else {
1567 1569 if (farg.ll == 0x8000000000000000ULL) {
... ... @@ -1582,7 +1584,8 @@ uint64_t helper_fres (uint64_t arg)
1582 1584 /* frsqrte - frsqrte. */
1583 1585 uint64_t helper_frsqrte (uint64_t arg)
1584 1586 {
1585   - CPU_DoubleU farg;
  1587 + CPU_DoubleU fone, farg;
  1588 + fone.ll = 0x3FF0000000000000ULL;
1586 1589 farg.ll = arg;
1587 1590  
1588 1591 if (unlikely(float64_is_signaling_nan(farg.d))) {
... ... @@ -1593,7 +1596,7 @@ uint64_t helper_frsqrte (uint64_t arg)
1593 1596 farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSQRT);
1594 1597 } else if (likely(isnormal(farg.d))) {
1595 1598 farg.d = float64_sqrt(farg.d, &env->fp_status);
1596   - farg.d = float32_div(1.0, farg.d, &env->fp_status);
  1599 + farg.d = float32_div(fone.d, farg.d, &env->fp_status);
1597 1600 } else {
1598 1601 if (farg.ll == 0x8000000000000000ULL) {
1599 1602 farg.ll = 0xFFF0000000000000ULL;
... ...