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luajit: opcodes: implement scalar.UintMapper

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This commit is contained in:
Babz 2023-06-20 23:55:37 +02:00
parent 08ae661c15
commit 715f850d50
2 changed files with 25 additions and 21 deletions
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2
format/luajit/luajit.go
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@ -91,7 +91,7 @@ func (j *jumpBias) MapUint(u scalar.Uint) (scalar.Uint, error) {
}
func LuaJITDecodeBCIns(d *decode.D) {
op := d.FieldU8("op", bcOpSyms)
op := d.FieldU8("op", opcodes)
d.FieldU8("a")

44
format/luajit/opcodes.go
View File

@ -4,13 +4,6 @@ import (
"github.com/wader/fq/pkg/scalar"
)
type BcDef struct {
Name string
MA int
MB int
MC int
}
const (
BcMnone = iota
BcMdst
@ -29,7 +22,24 @@ const (
BcMcdata
)
var opcodes = []BcDef{
type BcDef struct {
Name string
MA int
MB int
MC int
}
func (op *BcDef) HasD() bool {
return op.MB == BcMnone
}
func (op *BcDef) IsJump() bool {
return op.MC == BcMjump
}
type BcDefList []BcDef
var opcodes = BcDefList{
{"ISLT", BcMvar, BcMnone, BcMvar},
{"ISGE", BcMvar, BcMnone, BcMvar},
{"ISLE", BcMvar, BcMnone, BcMvar},
@ -157,18 +167,12 @@ var opcodes = []BcDef{
{"FUNCCW", BcMrbase, BcMnone, BcMnone},
}
func (op *BcDef) HasD() bool {
return op.MB == BcMnone
}
func (opcodes BcDefList) MapUint(s scalar.Uint) (scalar.Uint, error) {
listIdx := int(s.Actual)
func (op *BcDef) IsJump() bool {
return op.MC == BcMjump
}
var bcOpSyms = scalar.UintMapSymStr{}
func init() {
for i := 0; i < len(opcodes); i++ {
bcOpSyms[uint64(i)] = opcodes[i].Name
if listIdx < len(opcodes) {
s.Sym = opcodes[listIdx].Name
}
return s, nil
}