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authorRichard Henderson <richard.henderson@linaro.org>2021-06-01 16:35:19 -0300
committerDavid Gibson <david@gibson.dropbear.id.au>2021-06-03 18:10:31 +1000
commit0a11bb7a35075379dffafb75698dd503eb6f9b9c (patch)
tree7dcdc66b374de081018c90bfc0102d6aae89353f /target
parent5e560864234e78461879c632c414e4fe97a9a506 (diff)
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target/ppc: Implement PNOP
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>
Diffstat (limited to 'target')
-rw-r--r--target/ppc/insn64.decode67
-rw-r--r--target/ppc/translate/fixedpoint-impl.c.inc11
2 files changed, 78 insertions, 0 deletions
diff --git a/target/ppc/insn64.decode b/target/ppc/insn64.decode
index 1965088..9aa5097 100644
--- a/target/ppc/insn64.decode
+++ b/target/ppc/insn64.decode
@@ -28,3 +28,70 @@
PADDI 000001 10 0--.-- .................. \
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
+}
diff --git a/target/ppc/translate/fixedpoint-impl.c.inc b/target/ppc/translate/fixedpoint-impl.c.inc
index 344a3ed..ce034a1 100644
--- a/target/ppc/translate/fixedpoint-impl.c.inc
+++ b/target/ppc/translate/fixedpoint-impl.c.inc
@@ -60,3 +60,14 @@ static bool trans_ADDIS(DisasContext *ctx, arg_D *a)
a->si <<= 16;
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;
+}