pkg/ifuzz/ifuzzimpl: move IsCompatible from x86

We now can implement IsCompatible portably.

3 files changed, 18 insertions, 17 deletions

diff --git a/pkg/ifuzz/ifuzzimpl/ifuzzimpl.go b/pkg/ifuzz/ifuzzimpl/ifuzzimpl.go
index 831e1ba3f..32f285250 100644
--- a/pkg/ifuzz/ifuzzimpl/ifuzzimpl.go
+++ b/pkg/ifuzz/ifuzzimpl/ifuzzimpl.go
@@ -82,3 +82,20 @@ func (modeInsns *ModeInsns) Add(insn Insn) {
 		}
 	}
 }
+
+func (cfg *Config) IsCompatible(insn Insn) bool {
+	_, mode, pseudo, priv := insn.Info()
+	if cfg.Mode < 0 || cfg.Mode >= ModeLast {
+		panic("bad mode")
+	}
+	if priv && !cfg.Priv {
+		return false
+	}
+	if pseudo && !cfg.Exec {
+		return false
+	}
+	if mode&(1<<uint(cfg.Mode)) == 0 {
+		return false
+	}
+	return true
+}
diff --git a/pkg/ifuzz/x86/encode.go b/pkg/ifuzz/x86/encode.go
index 536031b06..9203d51c3 100644
--- a/pkg/ifuzz/x86/encode.go
+++ b/pkg/ifuzz/x86/encode.go
@@ -15,7 +15,7 @@ import (
 
 // nolint: gocyclo, nestif, gocognit, funlen
 func (insn *Insn) Encode(cfg *ifuzzimpl.Config, r *rand.Rand) []byte {
-	if !insn.isCompatible(cfg) {
+	if !cfg.IsCompatible(insn) {
 		panic("instruction is not suitable for this mode")
 	}
 	if insn.Pseudo {
diff --git a/pkg/ifuzz/x86/x86.go b/pkg/ifuzz/x86/x86.go
index d9fed6cd9..51623aa2f 100644
--- a/pkg/ifuzz/x86/x86.go
+++ b/pkg/ifuzz/x86/x86.go
@@ -83,22 +83,6 @@ func generateArg(cfg *ifuzzimpl.Config, r *rand.Rand, size int) []byte {
 	return arg
 }
 
-func (insn *Insn) isCompatible(cfg *ifuzzimpl.Config) bool {
-	if cfg.Mode < 0 || cfg.Mode >= ifuzzimpl.ModeLast {
-		panic("bad mode")
-	}
-	if insn.Priv && !cfg.Priv {
-		return false
-	}
-	if insn.Pseudo && !cfg.Exec {
-		return false
-	}
-	if insn.Mode&(1<<uint(cfg.Mode)) == 0 {
-		return false
-	}
-	return true
-}
-
 func generateInt(cfg *ifuzzimpl.Config, r *rand.Rand, size int) uint64 {
 	if size != 1 && size != 2 && size != 4 && size != 8 {
 		panic("bad arg size")