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| author | Matheus Ferst | 2022-06-29 18:29:02 +0200 |
|---|---|---|
| committer | Daniel Henrique Barboza | 2022-07-06 15:22:38 +0200 |
| commit | 6addef4d272684ba624c9fcaf66bc67e5fc4a93f (patch) | |
| tree | fd06588f778ae0be60c1a39828254bc237e7b5c5 | |
| parent | target/ppc: Add flag for ISA v2.06 BCDA instructions (diff) | |
| download | qemu-6addef4d272684ba624c9fcaf66bc67e5fc4a93f.tar.gz qemu-6addef4d272684ba624c9fcaf66bc67e5fc4a93f.tar.xz qemu-6addef4d272684ba624c9fcaf66bc67e5fc4a93f.zip | |
target/ppc: implement addg6s
Implements the following Power ISA v2.06 instruction:
addg6s: Add and Generate Sixes
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
Reviewed-by: Víctor Colombo <victor.colombo@eldorado.org.br>
Message-Id: <20220629162904.105060-10-victor.colombo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
| -rw-r--r-- | target/ppc/insn32.decode | 4 | ||||
| -rw-r--r-- | target/ppc/translate/fixedpoint-impl.c.inc | 37 |
2 files changed, 41 insertions, 0 deletions
diff --git a/target/ppc/insn32.decode b/target/ppc/insn32.decode index e5770bcc16..af8ba9ca9b 100644 --- a/target/ppc/insn32.decode +++ b/target/ppc/insn32.decode @@ -311,6 +311,10 @@ CNTTZDM 011111 ..... ..... ..... 1000111011 - @X PDEPD 011111 ..... ..... ..... 0010011100 - @X PEXTD 011111 ..... ..... ..... 0010111100 - @X +## BCD Assist + +ADDG6S 011111 ..... ..... ..... - 001001010 - @X + ### Float-Point Load Instructions LFS 110000 ..... ..... ................ @D diff --git a/target/ppc/translate/fixedpoint-impl.c.inc b/target/ppc/translate/fixedpoint-impl.c.inc index 1aab32be03..490e49cfc7 100644 --- a/target/ppc/translate/fixedpoint-impl.c.inc +++ b/target/ppc/translate/fixedpoint-impl.c.inc @@ -492,3 +492,40 @@ static bool trans_PEXTD(DisasContext *ctx, arg_X *a) #endif return true; } + +static bool trans_ADDG6S(DisasContext *ctx, arg_X *a) +{ + const uint64_t carry_bits = 0x1111111111111111ULL; + TCGv t0, t1, carry, zero = tcg_constant_tl(0); + + REQUIRE_INSNS_FLAGS2(ctx, BCDA_ISA206); + + t0 = tcg_temp_new(); + t1 = tcg_const_tl(0); + carry = tcg_const_tl(0); + + for (int i = 0; i < 16; i++) { + tcg_gen_shri_tl(t0, cpu_gpr[a->ra], i * 4); + tcg_gen_andi_tl(t0, t0, 0xf); + tcg_gen_add_tl(t1, t1, t0); + + tcg_gen_shri_tl(t0, cpu_gpr[a->rb], i * 4); + tcg_gen_andi_tl(t0, t0, 0xf); + tcg_gen_add_tl(t1, t1, t0); + + tcg_gen_andi_tl(t1, t1, 0x10); + tcg_gen_setcond_tl(TCG_COND_NE, t1, t1, zero); + + tcg_gen_shli_tl(t0, t1, i * 4); + tcg_gen_or_tl(carry, carry, t0); + } + + tcg_gen_xori_tl(carry, carry, (target_long)carry_bits); + tcg_gen_muli_tl(cpu_gpr[a->rt], carry, 6); + + tcg_temp_free(t0); + tcg_temp_free(t1); + tcg_temp_free(carry); + + return true; +} |