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target/ppc: Implement PNOP

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The illegal suffix behavior matches what was observed in a
POWER10 DD2.0 machine.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Message-Id: <20210601193528.2533031-6-matheus.ferst@eldorado.org.br>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Richard Henderson 2021-06-01 16:35:19 -03:00 • committed by David Gibson
parent 5e56086423
commit 0a11bb7a35
2 changed files with 78 additions and 0 deletions
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67
target/ppc/insn64.decode
View file

@ -28,3 +28,70 @@
PADDI 000001 10 0--.-- .................. \ PADDI 000001 10 0--.-- .................. \
001110 ..... ..... ................ @PLS_D 001110 ..... ..... ................ @PLS_D
### Prefixed No-operation Instruction
@PNOP 000001 11 0000-- 000000000000000000 \
................................
{
[
## Invalid suffixes: Branch instruction
# bc[l][a]
INVALID ................................ \
010000-------------------------- @PNOP
# b[l][a]
INVALID ................................ \
010010-------------------------- @PNOP
# bclr[l]
INVALID ................................ \
010011---------------0000010000- @PNOP
# bcctr[l]
INVALID ................................ \
010011---------------1000010000- @PNOP
# bctar[l]
INVALID ................................ \
010011---------------1000110000- @PNOP
## Invalid suffixes: rfebb
INVALID ................................ \
010011---------------0010010010- @PNOP
## Invalid suffixes: context synchronizing other than isync
# sc
INVALID ................................ \
010001------------------------1- @PNOP
# scv
INVALID ................................ \
010001------------------------01 @PNOP
# rfscv
INVALID ................................ \
010011---------------0001010010- @PNOP
# rfid
INVALID ................................ \
010011---------------0000010010- @PNOP
# hrfid
INVALID ................................ \
010011---------------0100010010- @PNOP
# urfid
INVALID ................................ \
010011---------------0100110010- @PNOP
# stop
INVALID ................................ \
010011---------------0101110010- @PNOP
# mtmsr w/ L=0
INVALID ................................ \
011111---------0-----0010010010- @PNOP
# mtmsrd w/ L=0
INVALID ................................ \
011111---------0-----0010110010- @PNOP
## Invalid suffixes: Service Processor Attention
INVALID ................................ \
000000----------------100000000- @PNOP
]
## Valid suffixes
PNOP ................................ \
-------------------------------- @PNOP
}

11
target/ppc/translate/fixedpoint-impl.c.inc
View file

@ -60,3 +60,14 @@ static bool trans_ADDIS(DisasContext *ctx, arg_D *a)
a->si <<= 16; a->si <<= 16;
return trans_ADDI(ctx, a); return trans_ADDI(ctx, a);
} }
static bool trans_INVALID(DisasContext *ctx, arg_INVALID *a)
{
gen_invalid(ctx);
return true;
}
static bool trans_PNOP(DisasContext *ctx, arg_PNOP *a)
{
return true;
}