diff options
| author | Matheus Ferst <matheus.ferst@eldorado.org.br> | 2022-06-29 13:29:03 -0300 |
|---|---|---|
| committer | Daniel Henrique Barboza <danielhb413@gmail.com> | 2022-07-06 10:22:38 -0300 |
| commit | 38d3690bda3fe217ea72903859907916a5429c6e (patch) | |
| tree | a28e2139e1c66d39bcaef4b59547747359da0933 /target/ppc/insn32.decode | |
| parent | 6addef4d272684ba624c9fcaf66bc67e5fc4a93f (diff) | |
target/ppc: implement cbcdtd
Implements the Convert Binary Coded Decimal To Declets instruction.
Since libdecnumber doesn't expose the methods for direct conversion
(decDigitsToDPD, BCD2DPD, etc.), the BCD values are converted to
decimal32 format, from which the declets are extracted.
Where the behavior is undefined, we try to match the result observed in
a POWER9 DD2.3.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
Message-Id: <20220629162904.105060-11-victor.colombo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Diffstat (limited to 'target/ppc/insn32.decode')
| -rw-r--r-- | target/ppc/insn32.decode | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/target/ppc/insn32.decode b/target/ppc/insn32.decode index af8ba9ca9b..65bcaf657f 100644 --- a/target/ppc/insn32.decode +++ b/target/ppc/insn32.decode @@ -87,6 +87,9 @@ &X_rc rt ra rb rc:bool @X_rc ...... rt:5 ra:5 rb:5 .......... rc:1 &X_rc +&X_sa rs ra +@X_sa ...... rs:5 ra:5 ..... .......... . &X_sa + %x_frtp 22:4 !function=times_2 %x_frap 17:4 !function=times_2 %x_frbp 12:4 !function=times_2 @@ -314,6 +317,7 @@ PEXTD 011111 ..... ..... ..... 0010111100 - @X ## BCD Assist ADDG6S 011111 ..... ..... ..... - 001001010 - @X +CBCDTD 011111 ..... ..... ----- 0100111010 - @X_sa ### Float-Point Load Instructions |