diff options
| author | Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com> | 2016-11-25 01:53:31 -0200 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2017-01-31 10:10:12 +1100 |
| commit | c85bc7dd90219c2b0ebe278187f5efa7e465687c (patch) | |
| tree | ff7c730397c9892c325cd85f20f6a2af27ad1fd8 /target/ppc | |
| parent | a406c058e7ae2470facf0db85dbd91ae5df634fc (diff) | |
| download | qemu-c85bc7dd90219c2b0ebe278187f5efa7e465687c.tar.gz | |
target-ppc: Implement bcdctsq. instruction
bcdctsq.: Decimal convert to signed quadword. It is possible to
convert packed decimal values to signed quadwords.
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 | 40 | ||||
| -rw-r--r-- | target/ppc/translate/vmx-impl.inc.c | 7 |
3 files changed, 48 insertions, 0 deletions
diff --git a/target/ppc/helper.h b/target/ppc/helper.h index ec5ccbe43a..daf5a6e973 100644 --- a/target/ppc/helper.h +++ b/target/ppc/helper.h @@ -378,6 +378,7 @@ DEF_HELPER_3(bcdctn, i32, avr, avr, i32) DEF_HELPER_3(bcdcfz, i32, avr, avr, i32) 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_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 a809482807..fa7cfddab2 100644 --- a/target/ppc/int_helper.c +++ b/target/ppc/int_helper.c @@ -2880,6 +2880,46 @@ uint32_t helper_bcdcfsq(ppc_avr_t *r, ppc_avr_t *b, uint32_t ps) return cr; } +uint32_t helper_bcdctsq(ppc_avr_t *r, ppc_avr_t *b, uint32_t ps) +{ + uint8_t i; + int cr; + uint64_t carry; + uint64_t unused; + uint64_t lo_value; + uint64_t hi_value = 0; + int sgnb = bcd_get_sgn(b); + int invalid = (sgnb == 0); + + lo_value = bcd_get_digit(b, 31, &invalid); + for (i = 30; i > 0; i--) { + mulu64(&lo_value, &carry, lo_value, 10ULL); + mulu64(&hi_value, &unused, hi_value, 10ULL); + lo_value += bcd_get_digit(b, i, &invalid); + hi_value += carry; + + if (unlikely(invalid)) { + break; + } + } + + if (sgnb == -1) { + r->s64[LO_IDX] = -lo_value; + r->s64[HI_IDX] = ~hi_value + !r->s64[LO_IDX]; + } else { + r->s64[LO_IDX] = lo_value; + r->s64[HI_IDX] = hi_value; + } + + cr = bcd_cmp_zero(b); + + if (unlikely(invalid)) { + cr = CRF_SO; + } + + return cr; +} + 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 36141e56af..1579b58146 100644 --- a/target/ppc/translate/vmx-impl.inc.c +++ b/target/ppc/translate/vmx-impl.inc.c @@ -990,10 +990,14 @@ GEN_BCD2(bcdctn) GEN_BCD2(bcdcfz) GEN_BCD2(bcdctz) GEN_BCD2(bcdcfsq) +GEN_BCD2(bcdctsq) static void gen_xpnd04_1(DisasContext *ctx) { switch (opc4(ctx->opcode)) { + case 0: + gen_bcdctsq(ctx); + break; case 2: gen_bcdcfsq(ctx); break; @@ -1018,6 +1022,9 @@ static void gen_xpnd04_1(DisasContext *ctx) static void gen_xpnd04_2(DisasContext *ctx) { switch (opc4(ctx->opcode)) { + case 0: + gen_bcdctsq(ctx); + break; case 2: gen_bcdcfsq(ctx); break; |