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env.go
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env.go
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package vm
import (
"fmt"
"github.com/go-interpreter/wagon/wasm"
)
type EnvFunc interface {
Call(index int64, ops interface{}, args []uint64) (uint64, error)
Gas(index int64, ops interface{}, args []uint64) (uint64, error)
}
// EnvTable stand for env's info which we will register for wasm module before it run.
type EnvTable struct {
Exports wasm.SectionExports
Module wasm.Module
importFuncCnt uint32
importGlobalCnt uint32
}
var (
gEnvTable *EnvTable
)
func init() {
env := EnvTable{
Exports: wasm.SectionExports{
Entries: make(map[string]wasm.ExportEntry),
Names: make([]string, 0),
},
}
env.Module = wasm.Module{
Export: &env.Exports,
FunctionIndexSpace: make([]wasm.Function, 0),
GlobalIndexSpace: make([]wasm.GlobalEntry, 0),
}
gEnvTable = &env
gEnvTable.RegisterFunc("TC_CallContract", new(TCCallContract))
gEnvTable.RegisterFunc("TC_DelegateCallContract", new(TCDelegateCallContract))
gEnvTable.RegisterFunc("TC_BigIntAdd", new(TCBigIntAdd))
gEnvTable.RegisterFunc("TC_BigIntSub", new(TCBigIntSub))
gEnvTable.RegisterFunc("TC_BigIntMul", new(TCBigIntMul))
gEnvTable.RegisterFunc("TC_BigIntDiv", new(TCBigIntDiv))
gEnvTable.RegisterFunc("TC_BigIntMod", new(TCBigIntMod))
gEnvTable.RegisterFunc("TC_BigIntCmp", new(TCBigIntCmp))
gEnvTable.RegisterFunc("TC_BigIntToInt64", new(TCBigIntToInt64))
gEnvTable.RegisterFunc("exit", new(TCExit))
gEnvTable.RegisterFunc("abort", new(TCAbort))
gEnvTable.RegisterFunc("malloc", new(TCMalloc))
gEnvTable.RegisterFunc("calloc", new(TCCalloc))
gEnvTable.RegisterFunc("realloc", new(TCRealloc))
gEnvTable.RegisterFunc("prints_l", new(TCPrintsl))
gEnvTable.RegisterFunc("free", new(TCFree))
gEnvTable.RegisterFunc("memcpy", new(TCMemcpy))
gEnvTable.RegisterFunc("memset", new(TCMemset))
gEnvTable.RegisterFunc("memmove", new(TCMemmove))
gEnvTable.RegisterFunc("memcmp", new(TCMemcmp))
gEnvTable.RegisterFunc("strcmp", new(TCStrcmp))
gEnvTable.RegisterFunc("strcpy", new(TCStrcpy))
gEnvTable.RegisterFunc("strlen", new(TCStrlen))
gEnvTable.RegisterFunc("strconcat", new(TCStrconcat))
gEnvTable.RegisterFunc("atoi", new(TCAtoi))
gEnvTable.RegisterFunc("atoi64", new(TCAtoi64))
// gEnvTable.RegisterFunc("atof32", new(TCAtof32))
// gEnvTable.RegisterFunc("atof64", new(TCAtof64))
gEnvTable.RegisterFunc("itoa", new(TCItoa))
gEnvTable.RegisterFunc("i64toa", new(TCI64toa))
gEnvTable.RegisterFunc("TC_GetMsgData", new(TCGetMsgData))
gEnvTable.RegisterFunc("TC_GetMsgGas", new(TCGetMsgGas))
gEnvTable.RegisterFunc("TC_GetMsgSender", new(TCGetMsgSender))
gEnvTable.RegisterFunc("TC_GetMsgSign", new(TCGetMsgSign))
gEnvTable.RegisterFunc("TC_Assert", new(TCAssert))
gEnvTable.RegisterFunc("TC_Require", new(TCRequire))
gEnvTable.RegisterFunc("TC_GasLeft", new(TCGasLeft))
gEnvTable.RegisterFunc("TC_RequireWithMsg", new(TCRequireWithMsg))
gEnvTable.RegisterFunc("TC_Revert", new(TCRevert))
gEnvTable.RegisterFunc("TC_RevertWithMsg", new(TCRevertWithMsg))
gEnvTable.RegisterFunc("TC_IsHexAddress", new(TCIsHexAddress))
gEnvTable.RegisterFunc("TC_Payable", new(TCPayable))
gEnvTable.RegisterFunc("TC_Prints", new(TCPrints))
gEnvTable.RegisterFunc("TC_GetSelfAddress", new(TCGetSelfAddress))
gEnvTable.RegisterFunc("TC_Ripemd160", new(TCRipemd160))
gEnvTable.RegisterFunc("TC_Sha256", new(TCSha256))
gEnvTable.RegisterFunc("TC_Keccak256", new(TCKeccak256))
// go json api (optional)
gEnvTable.RegisterFunc("TC_JsonParse", new(TCJSONParse))
gEnvTable.RegisterFunc("TC_JsonGetInt", new(TCJSONGetInt))
gEnvTable.RegisterFunc("TC_JsonGetInt64", new(TCJSONGetInt64))
gEnvTable.RegisterFunc("TC_JsonGetString", new(TCJSONGetString))
gEnvTable.RegisterFunc("TC_JsonGetAddress", new(TCJSONGetAddress))
gEnvTable.RegisterFunc("TC_JsonGetBigInt", new(TCJSONGetBigInt))
gEnvTable.RegisterFunc("TC_JsonGetFloat", new(TCJSONGetFloat))
gEnvTable.RegisterFunc("TC_JsonGetDouble", new(TCJSONGetDouble))
gEnvTable.RegisterFunc("TC_JsonGetObject", new(TCJSONGetObject))
gEnvTable.RegisterFunc("TC_JsonNewObject", new(TCJSONNewObject))
gEnvTable.RegisterFunc("TC_JsonPutInt", new(TCJSONPutInt))
gEnvTable.RegisterFunc("TC_JsonPutInt64", new(TCJSONPutInt64))
gEnvTable.RegisterFunc("TC_JsonPutString", new(TCJSONPutString))
gEnvTable.RegisterFunc("TC_JsonPutAddress", new(TCJSONPutAddress))
gEnvTable.RegisterFunc("TC_JsonPutBigInt", new(TCJSONPutBigInt))
gEnvTable.RegisterFunc("TC_JsonPutFloat", new(TCJSONPutFloat))
gEnvTable.RegisterFunc("TC_JsonPutDouble", new(TCJSONPutDouble))
gEnvTable.RegisterFunc("TC_JsonPutObject", new(TCJSONPutObject))
gEnvTable.RegisterFunc("TC_JsonToString", new(TCJSONToString))
}
// NewEnvTable new EnvTable
func NewEnvTable() *EnvTable {
return gEnvTable
}
func (env *EnvTable) resolveImport(name string) (*wasm.Module, error) {
if name != "env" {
panic(fmt.Sprintf("invalid name: %s", name))
}
return &env.Module, nil
}
// RegisterFunc Register env function for wasm module
func (env *EnvTable) RegisterFunc(name string, fn EnvFunc) {
if entry, exist := env.Exports.Entries[name]; exist {
env.Module.FunctionIndexSpace[entry.Index].Host = fn
return
}
env.Exports.Names = append(env.Exports.Names, name)
env.Exports.Entries[name] = wasm.ExportEntry{
FieldStr: name,
Kind: wasm.ExternalFunction,
Index: env.importFuncCnt,
}
env.Module.FunctionIndexSpace = append(env.Module.FunctionIndexSpace, wasm.Function{
Sig: &wasm.FunctionSig{},
Body: &wasm.FunctionBody{Module: &env.Module},
Host: fn,
Name: name,
})
env.importFuncCnt++
}
// RegisterGlobal Register env global for wasm module
func (env *EnvTable) RegisterGlobal(name string, v interface{}) {
env.Exports.Names = append(env.Exports.Names, name)
env.Exports.Entries[name] = wasm.ExportEntry{
FieldStr: name,
Kind: wasm.ExternalGlobal,
Index: env.importGlobalCnt,
}
env.Module.GlobalIndexSpace = append(env.Module.GlobalIndexSpace, wasm.GlobalEntry{
Type: wasm.GlobalVar{
Type: wasm.ValueTypeI32,
},
Init: []byte{65, 9, 11}, // for test.
})
env.importGlobalCnt++
}
// GetFuncByName Get env function by name
func (env *EnvTable) GetFuncByName(name string) EnvFunc {
if entry, exist := env.Exports.Entries[name]; exist {
return env.Module.FunctionIndexSpace[entry.Index].Host.(EnvFunc)
}
return nil
}