diff options
Diffstat (limited to 'target-ppc/op_helper.c')
| -rw-r--r-- | target-ppc/op_helper.c | 75 |
1 files changed, 22 insertions, 53 deletions
diff --git a/target-ppc/op_helper.c b/target-ppc/op_helper.c index 6ed9c95..75bf33b 100644 --- a/target-ppc/op_helper.c +++ b/target-ppc/op_helper.c @@ -151,15 +151,12 @@ void do_addmeo (void) { T1 = T0; T0 += xer_ca + (-1); - if (likely(!((uint32_t)T1 & - ((uint32_t)T1 ^ (uint32_t)T0) & (1UL << 31)))) { - xer_ov = 0; - } else { - xer_ov = 1; - xer_so = 1; - } + xer_ov = ((uint32_t)T1 & ((uint32_t)T1 ^ (uint32_t)T0)) >> 31; + xer_so |= xer_ov; if (likely(T1 != 0)) xer_ca = 1; + else + xer_ca = 0; } #if defined(TARGET_PPC64) @@ -167,15 +164,12 @@ void do_addmeo_64 (void) { T1 = T0; T0 += xer_ca + (-1); - if (likely(!((uint64_t)T1 & - ((uint64_t)T1 ^ (uint64_t)T0) & (1ULL << 63)))) { - xer_ov = 0; - } else { - xer_ov = 1; - xer_so = 1; - } + xer_ov = ((uint64_t)T1 & ((uint64_t)T1 ^ (uint64_t)T0)) >> 63; + xer_so |= xer_ov; if (likely(T1 != 0)) xer_ca = 1; + else + xer_ca = 0; } #endif @@ -316,15 +310,12 @@ void do_subfmeo (void) { T1 = T0; T0 = ~T0 + xer_ca - 1; - if (likely(!((uint32_t)~T1 & ((uint32_t)~T1 ^ (uint32_t)T0) & - (1UL << 31)))) { - xer_ov = 0; - } else { - xer_ov = 1; - xer_so = 1; - } + xer_ov = ((uint32_t)~T1 & ((uint32_t)~T1 ^ (uint32_t)T0)) >> 31; + xer_so |= xer_ov; if (likely((uint32_t)T1 != UINT32_MAX)) xer_ca = 1; + else + xer_ca = 0; } #if defined(TARGET_PPC64) @@ -332,15 +323,12 @@ void do_subfmeo_64 (void) { T1 = T0; T0 = ~T0 + xer_ca - 1; - if (likely(!((uint64_t)~T1 & ((uint64_t)~T1 ^ (uint64_t)T0) & - (1ULL << 63)))) { - xer_ov = 0; - } else { - xer_ov = 1; - xer_so = 1; - } + xer_ov = ((uint64_t)~T1 & ((uint64_t)~T1 ^ (uint64_t)T0)) >> 63; + xer_so |= xer_ov; if (likely((uint64_t)T1 != UINT64_MAX)) xer_ca = 1; + else + xer_ca = 0; } #endif @@ -348,13 +336,9 @@ void do_subfzeo (void) { T1 = T0; T0 = ~T0 + xer_ca; - if (likely(!(((uint32_t)~T1 ^ UINT32_MAX) & - ((uint32_t)(~T1) ^ (uint32_t)T0) & (1UL << 31)))) { - xer_ov = 0; - } else { - xer_ov = 1; - xer_so = 1; - } + xer_ov = (((uint32_t)~T1 ^ UINT32_MAX) & + ((uint32_t)(~T1) ^ (uint32_t)T0)) >> 31; + xer_so |= xer_ov; if (likely((uint32_t)T0 >= (uint32_t)~T1)) { xer_ca = 0; } else { @@ -367,13 +351,9 @@ void do_subfzeo_64 (void) { T1 = T0; T0 = ~T0 + xer_ca; - if (likely(!(((uint64_t)~T1 ^ UINT64_MAX) & - ((uint64_t)(~T1) ^ (uint64_t)T0) & (1ULL << 63)))) { - xer_ov = 0; - } else { - xer_ov = 1; - xer_so = 1; - } + xer_ov = (((uint64_t)~T1 ^ UINT64_MAX) & + ((uint64_t)(~T1) ^ (uint64_t)T0)) >> 63; + xer_so |= xer_ov; if (likely((uint64_t)T0 >= (uint64_t)~T1)) { xer_ca = 0; } else { @@ -1755,17 +1735,6 @@ void do_op_602_mfrom (void) /*****************************************************************************/ /* Embedded PowerPC specific helpers */ -void do_405_check_ov (void) -{ - if (likely((((uint32_t)T1 ^ (uint32_t)T2) >> 31) || - !(((uint32_t)T0 ^ (uint32_t)T2) >> 31))) { - xer_ov = 0; - } else { - xer_ov = 1; - xer_so = 1; - } -} - void do_405_check_sat (void) { if (!likely((((uint32_t)T1 ^ (uint32_t)T2) >> 31) || |