diff options
| -rw-r--r-- | target/ppc/helper.h | 1 | ||||
| -rw-r--r-- | target/ppc/int_helper.c | 37 | ||||
| -rw-r--r-- | target/ppc/translate/vmx-impl.inc.c | 5 | ||||
| -rw-r--r-- | target/ppc/translate/vmx-ops.inc.c | 4 |
4 files changed, 45 insertions, 2 deletions
diff --git a/target/ppc/helper.h b/target/ppc/helper.h index 96d8caed08..ddc6a9bbfe 100644 --- a/target/ppc/helper.h +++ b/target/ppc/helper.h @@ -396,6 +396,7 @@ DEF_HELPER_3(bcdsetsgn, i32, avr, avr, i32) DEF_HELPER_4(bcds, i32, avr, avr, avr, i32) DEF_HELPER_4(bcdus, i32, avr, avr, avr, i32) DEF_HELPER_4(bcdsr, i32, avr, avr, avr, i32) +DEF_HELPER_4(bcdtrunc, i32, avr, avr, avr, i32) DEF_HELPER_2(xsadddp, void, env, i32) DEF_HELPER_2(xsaddqp, void, env, i32) diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c index d30905986b..9f56cffc43 100644 --- a/target/ppc/int_helper.c +++ b/target/ppc/int_helper.c @@ -3191,6 +3191,43 @@ uint32_t helper_bcdsr(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, uint32_t ps) return cr; } +uint32_t helper_bcdtrunc(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, uint32_t ps) +{ + uint64_t mask; + uint32_t ox_flag = 0; +#if defined(HOST_WORDS_BIGENDIAN) + int i = a->s16[3] + 1; +#else + int i = a->s16[4] + 1; +#endif + ppc_avr_t ret = *b; + + if (bcd_is_valid(b) == false) { + return CRF_SO; + } + + if (i > 16 && i < 32) { + mask = (uint64_t)-1 >> (128 - i * 4); + if (ret.u64[HI_IDX] & ~mask) { + ox_flag = CRF_SO; + } + + ret.u64[HI_IDX] &= mask; + } else if (i >= 0 && i <= 16) { + mask = (uint64_t)-1 >> (64 - i * 4); + if (ret.u64[HI_IDX] || (ret.u64[LO_IDX] & ~mask)) { + ox_flag = CRF_SO; + } + + ret.u64[LO_IDX] &= mask; + ret.u64[HI_IDX] = 0; + } + bcd_put_digit(&ret, bcd_preferred_sgn(bcd_get_sgn(b), ps), 0); + *r = ret; + + return bcd_cmp_zero(&ret) | ox_flag; +} + void helper_vsbox(ppc_avr_t *r, ppc_avr_t *a) { int i; diff --git a/target/ppc/translate/vmx-impl.inc.c b/target/ppc/translate/vmx-impl.inc.c index 451abb5064..1683f42167 100644 --- a/target/ppc/translate/vmx-impl.inc.c +++ b/target/ppc/translate/vmx-impl.inc.c @@ -1019,6 +1019,7 @@ GEN_BCD(bcdcpsgn); GEN_BCD(bcds); GEN_BCD(bcdus); GEN_BCD(bcdsr); +GEN_BCD(bcdtrunc); static void gen_xpnd04_1(DisasContext *ctx) { @@ -1097,6 +1098,10 @@ GEN_VXFORM_DUAL(vsubudm, PPC2_ALTIVEC_207, PPC_NONE, \ bcds, PPC_NONE, PPC2_ISA300) GEN_VXFORM_DUAL(vsubuwm, PPC_ALTIVEC, PPC_NONE, \ bcdus, PPC_NONE, PPC2_ISA300) +GEN_VXFORM_DUAL(vsubsbs, PPC_ALTIVEC, PPC_NONE, \ + bcdtrunc, PPC_NONE, PPC2_ISA300) +GEN_VXFORM_DUAL(vsubuqm, PPC2_ALTIVEC_207, PPC_NONE, \ + bcdtrunc, PPC_NONE, PPC2_ISA300) static void gen_vsbox(DisasContext *ctx) { diff --git a/target/ppc/translate/vmx-ops.inc.c b/target/ppc/translate/vmx-ops.inc.c index fa9c996fa8..e6167a4e5b 100644 --- a/target/ppc/translate/vmx-ops.inc.c +++ b/target/ppc/translate/vmx-ops.inc.c @@ -143,14 +143,14 @@ GEN_VXFORM(vaddsws, 0, 14), GEN_VXFORM_DUAL(vsububs, bcdadd, 0, 24, PPC_ALTIVEC, PPC_NONE), GEN_VXFORM_DUAL(vsubuhs, bcdsub, 0, 25, PPC_ALTIVEC, PPC_NONE), GEN_VXFORM(vsubuws, 0, 26), -GEN_VXFORM(vsubsbs, 0, 28), +GEN_VXFORM_DUAL(vsubsbs, bcdtrunc, 0, 28, PPC_NONE, PPC2_ISA300), GEN_VXFORM(vsubshs, 0, 29), GEN_VXFORM_DUAL(vsubsws, xpnd04_2, 0, 30, PPC_ALTIVEC, PPC_NONE), GEN_VXFORM_207(vadduqm, 0, 4), GEN_VXFORM_207(vaddcuq, 0, 5), GEN_VXFORM_DUAL(vaddeuqm, vaddecuq, 30, 0xFF, PPC_NONE, PPC2_ALTIVEC_207), -GEN_VXFORM_207(vsubuqm, 0, 20), GEN_VXFORM_207(vsubcuq, 0, 21), +GEN_VXFORM_DUAL(vsubuqm, bcdtrunc, 0, 20, PPC2_ALTIVEC_207, PPC2_ISA300), GEN_VXFORM_DUAL(vsubeuqm, vsubecuq, 31, 0xFF, PPC_NONE, PPC2_ALTIVEC_207), GEN_VXFORM(vrlb, 2, 0), GEN_VXFORM(vrlh, 2, 1), |