wip

internal/opcodescsv/analysis.go

@@ -0,0 +1,38 @@
+package opcodescsv
+
+import (
+	"strconv"
+	"strings"
+
+	"golang.org/x/arch/x86/x86csv"
+)
+
+type Alias struct {
+	Opcode   string
+	DataSize int
+}
+
+// BuildAliasMap constructs a map from AT&T/GNU/Intel to Go syntax.
+func BuildAliasMap(is []*x86csv.Inst) (map[Alias]string, error) {
+	m := map[Alias]string{}
+	for _, i := range is {
+		s, err := datasize(i.DataSize)
+		if err != nil {
+			return nil, err
+		}
+
+		for _, alt := range []string{i.IntelOpcode(), i.GNUOpcode()} {
+			if strings.ToUpper(alt) != i.GoOpcode() {
+				m[Alias{Opcode: strings.ToLower(alt), DataSize: s}] = i.GoOpcode()
+			}
+		}
+	}
+	return m, nil
+}
+
+func datasize(s string) (int, error) {
+	if s == "" {
+		return 0, nil
+	}
+	return strconv.Atoi(s)
+}

internal/opcodescsv/io.go

@@ -0,0 +1,19 @@
+package opcodescsv
+
+import (
+	"os"
+
+	"golang.org/x/arch/x86/x86csv"
+)
+
+// ReadFile reads the given x86 CSV file.
+func ReadFile(filename string) ([]*x86csv.Inst, error) {
+	f, err := os.Open(filename)
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+
+	r := x86csv.NewReader(f)
+	return r.ReadAll()
+}