diff options
| author | Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com> | 2016-11-25 01:53:30 -0200 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2017-01-31 10:10:12 +1100 |
| commit | a406c058e7ae2470facf0db85dbd91ae5df634fc (patch) | |
| tree | 3f11415ec394d17f40ef5232015c40c1b683f53d /target | |
| parent | d59ba5838073226312a34074d4b15c6acc4a228d (diff) | |
target-ppc: Implement bcdcfsq. instruction
bcdcfsq.: Decimal convert from signed quadword. It is not possible
to convert values less than -10^31-1 or greater than 10^31-1 to be
represented in packed decimal format.
Signed-off-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com>
[dwg: Corrected constant which should be 10^16-1 but was 10^17-1]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'target')
| -rw-r--r-- | target/ppc/helper.h | 1 | ||||
| -rw-r--r-- | target/ppc/int_helper.c | 38 | ||||
| -rw-r--r-- | target/ppc/translate/vmx-impl.inc.c | 7 |
3 files changed, 46 insertions, 0 deletions
diff --git a/target/ppc/helper.h b/target/ppc/helper.h index 125d6c5031..ec5ccbe43a 100644 --- a/target/ppc/helper.h +++ b/target/ppc/helper.h @@ -377,6 +377,7 @@ DEF_HELPER_3(bcdcfn, i32, avr, avr, i32) 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_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 fbc84e21c0..a809482807 100644 --- a/target/ppc/int_helper.c +++ b/target/ppc/int_helper.c @@ -2842,6 +2842,44 @@ uint32_t helper_bcdctz(ppc_avr_t *r, ppc_avr_t *b, uint32_t ps) return cr; } +uint32_t helper_bcdcfsq(ppc_avr_t *r, ppc_avr_t *b, uint32_t ps) +{ + int i; + int cr = 0; + uint64_t lo_value; + uint64_t hi_value; + ppc_avr_t ret = { .u64 = { 0, 0 } }; + + if (b->s64[HI_IDX] < 0) { + lo_value = -b->s64[LO_IDX]; + hi_value = ~b->u64[HI_IDX] + !lo_value; + bcd_put_digit(&ret, 0xD, 0); + } else { + lo_value = b->u64[LO_IDX]; + hi_value = b->u64[HI_IDX]; + bcd_put_digit(&ret, bcd_preferred_sgn(0, ps), 0); + } + + if (divu128(&lo_value, &hi_value, 1000000000000000ULL) || + lo_value > 9999999999999999ULL) { + cr = CRF_SO; + } + + for (i = 1; i < 16; hi_value /= 10, i++) { + bcd_put_digit(&ret, hi_value % 10, i); + } + + for (; i < 32; lo_value /= 10, i++) { + bcd_put_digit(&ret, lo_value % 10, i); + } + + cr |= bcd_cmp_zero(&ret); + + *r = ret; + + 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 7143eb3a39..36141e56af 100644 --- a/target/ppc/translate/vmx-impl.inc.c +++ b/target/ppc/translate/vmx-impl.inc.c @@ -989,10 +989,14 @@ GEN_BCD2(bcdcfn) GEN_BCD2(bcdctn) GEN_BCD2(bcdcfz) GEN_BCD2(bcdctz) +GEN_BCD2(bcdcfsq) static void gen_xpnd04_1(DisasContext *ctx) { switch (opc4(ctx->opcode)) { + case 2: + gen_bcdcfsq(ctx); + break; case 4: gen_bcdctz(ctx); break; @@ -1014,6 +1018,9 @@ static void gen_xpnd04_1(DisasContext *ctx) static void gen_xpnd04_2(DisasContext *ctx) { switch (opc4(ctx->opcode)) { + case 2: + gen_bcdcfsq(ctx); + break; case 4: gen_bcdctz(ctx); break; |