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| author | Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com> | 2016-11-25 01:53:33 -0200 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2017-01-31 10:10:13 +1100 |
| commit | 466a3f9ca34dabb40f5e2c9c143939304cd6fb9e (patch) | |
| tree | eff6f7fd4bc5ea121f9285c1eec460c1a7ade105 /target/ppc | |
| parent | c3025c3b0aa6baea66be11fa97c5ecbcbff09677 (diff) | |
| download | qemu-466a3f9ca34dabb40f5e2c9c143939304cd6fb9e.zip qemu-466a3f9ca34dabb40f5e2c9c143939304cd6fb9e.tar.gz qemu-466a3f9ca34dabb40f5e2c9c143939304cd6fb9e.tar.bz2 | |
target-ppc: Implement bcdsetsgn. instruction
bcdsetsgn.: Decimal set sign. This instruction copies the register
value to the result register but adjust the signal according to
the preferred sign value.
Signed-off-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'target/ppc')
| -rw-r--r-- | target/ppc/helper.h | 1 | ||||
| -rw-r--r-- | target/ppc/int_helper.c | 19 | ||||
| -rw-r--r-- | target/ppc/translate/vmx-impl.inc.c | 8 |
3 files changed, 28 insertions, 0 deletions
diff --git a/target/ppc/helper.h b/target/ppc/helper.h index 7957633..de515ea 100644 --- a/target/ppc/helper.h +++ b/target/ppc/helper.h @@ -380,6 +380,7 @@ DEF_HELPER_3(bcdctz, i32, avr, avr, i32) DEF_HELPER_3(bcdcfsq, i32, avr, avr, i32) DEF_HELPER_3(bcdctsq, i32, avr, avr, i32) DEF_HELPER_4(bcdcpsgn, i32, avr, avr, avr, i32) +DEF_HELPER_3(bcdsetsgn, i32, avr, avr, i32) DEF_HELPER_2(xsadddp, void, env, i32) DEF_HELPER_2(xssubdp, void, env, i32) diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c index 61762ee..00d04c1 100644 --- a/target/ppc/int_helper.c +++ b/target/ppc/int_helper.c @@ -2943,6 +2943,25 @@ uint32_t helper_bcdcpsgn(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, uint32_t ps) return bcd_cmp_zero(r); } +uint32_t helper_bcdsetsgn(ppc_avr_t *r, ppc_avr_t *b, uint32_t ps) +{ + int i; + int invalid = 0; + int sgnb = bcd_get_sgn(b); + + *r = *b; + bcd_put_digit(r, bcd_preferred_sgn(sgnb, ps), 0); + + for (i = 1; i < 32; i++) { + bcd_get_digit(b, i, &invalid); + if (unlikely(invalid)) { + return CRF_SO; + } + } + + return bcd_cmp_zero(r); +} + 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 c14b666..b188e60 100644 --- a/target/ppc/translate/vmx-impl.inc.c +++ b/target/ppc/translate/vmx-impl.inc.c @@ -991,6 +991,7 @@ GEN_BCD2(bcdcfz) GEN_BCD2(bcdctz) GEN_BCD2(bcdcfsq) GEN_BCD2(bcdctsq) +GEN_BCD2(bcdsetsgn) GEN_BCD(bcdcpsgn); static void gen_xpnd04_1(DisasContext *ctx) @@ -1014,6 +1015,9 @@ static void gen_xpnd04_1(DisasContext *ctx) case 7: gen_bcdcfn(ctx); break; + case 31: + gen_bcdsetsgn(ctx); + break; default: gen_invalid(ctx); break; @@ -1038,12 +1042,16 @@ static void gen_xpnd04_2(DisasContext *ctx) case 7: gen_bcdcfn(ctx); break; + case 31: + gen_bcdsetsgn(ctx); + break; default: gen_invalid(ctx); break; } } + GEN_VXFORM_DUAL(vsubcuw, PPC_ALTIVEC, PPC_NONE, \ xpnd04_1, PPC_NONE, PPC2_ISA300) GEN_VXFORM_DUAL(vsubsws, PPC_ALTIVEC, PPC_NONE, \ |