fix(loader): loader programs parity

Author: sonicfromnewyoke

program_ids.go

@@ -32,6 +32,8 @@ var (
 	// Deploys, upgrades, and executes programs on the chain.
 	BPFLoaderProgramID            = MustPublicKeyFromBase58("BPFLoader2111111111111111111111111111111111")
 	BPFLoaderUpgradeableProgramID = MustPublicKeyFromBase58("BPFLoaderUpgradeab1e11111111111111111111111")
+	LoaderV4ProgramID             = MustPublicKeyFromBase58("LoaderV411111111111111111111111111111111111")
+	NativeLoaderID                = MustPublicKeyFromBase58("NativeLoader1111111111111111111111111111111")
 
 	// Verify secp256k1 public key recovery operations (ecrecover).
 	Secp256k1ProgramID = MustPublicKeyFromBase58("KeccakSecp256k11111111111111111111111111111")

programs/bpf-loader/loader.go

@@ -0,0 +1,107 @@
+// Copyright 2021 github.com/gagliardetto
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package loaderv2
+
+import (
+	"encoding/binary"
+	"fmt"
+
+	ag_binary "github.com/gagliardetto/binary"
+	ag_solanago "github.com/gagliardetto/solana-go"
+	ag_format "github.com/gagliardetto/solana-go/text/format"
+	ag_treeout "github.com/gagliardetto/treeout"
+)
+
+// Finalize an account loaded with program data for execution.
+//
+// Account references:
+//   [0] = [WRITE, SIGNER] Account to prepare for execution
+//   [1] = []              Rent sysvar
+type Finalize struct {
+	ag_solanago.AccountMetaSlice `bin:"-" borsh_skip:"true"`
+}
+
+func NewFinalizeInstructionBuilder() *Finalize {
+	return &Finalize{
+		AccountMetaSlice: make(ag_solanago.AccountMetaSlice, 2),
+	}
+}
+
+func (inst *Finalize) SetAccount(account ag_solanago.PublicKey) *Finalize {
+	inst.AccountMetaSlice[0] = ag_solanago.Meta(account).WRITE().SIGNER()
+	return inst
+}
+
+func (inst *Finalize) GetAccount() *ag_solanago.AccountMeta {
+	return inst.AccountMetaSlice[0]
+}
+
+// SetRentSysvar attaches the rent sysvar account. The helper NewFinalizeInstruction
+// uses the canonical sysvar ID; this setter is exposed for callers that wish
+// to override it.
+func (inst *Finalize) SetRentSysvar(rent ag_solanago.PublicKey) *Finalize {
+	inst.AccountMetaSlice[1] = ag_solanago.Meta(rent)
+	return inst
+}
+
+func (inst *Finalize) GetRentSysvar() *ag_solanago.AccountMeta {
+	return inst.AccountMetaSlice[1]
+}
+
+func (inst Finalize) Build() *Instruction {
+	return &Instruction{BaseVariant: ag_binary.BaseVariant{
+		Impl:   inst,
+		TypeID: ag_binary.TypeIDFromUint32(Instruction_Finalize, binary.LittleEndian),
+	}}
+}
+
+func (inst Finalize) ValidateAndBuild() (*Instruction, error) {
+	if err := inst.Validate(); err != nil {
+		return nil, err
+	}
+	return inst.Build(), nil
+}
+
+func (inst *Finalize) Validate() error {
+	for i, acc := range inst.AccountMetaSlice {
+		if acc == nil {
+			return fmt.Errorf("ins.AccountMetaSlice[%v] is not set", i)
+		}
+	}
+	return nil
+}
+
+func (inst *Finalize) EncodeToTree(parent ag_treeout.Branches) {
+	parent.Child(ag_format.Program(ProgramName, ProgramID)).
+		ParentFunc(func(programBranch ag_treeout.Branches) {
+			programBranch.Child(ag_format.Instruction("Finalize")).
+				ParentFunc(func(instructionBranch ag_treeout.Branches) {
+					instructionBranch.Child("Accounts").ParentFunc(func(a ag_treeout.Branches) {
+						a.Child(ag_format.Meta("Account", inst.AccountMetaSlice[0]))
+						a.Child(ag_format.Meta("   Rent", inst.AccountMetaSlice[1]))
+					})
+				})
+		})
+}
+
+// Finalize carries no payload: the discriminant alone is the data.
+func (inst Finalize) MarshalWithEncoder(_ *ag_binary.Encoder) error   { return nil }
+func (inst *Finalize) UnmarshalWithDecoder(_ *ag_binary.Decoder) error { return nil }
+
+func NewFinalizeInstruction(account ag_solanago.PublicKey) *Finalize {
+	return NewFinalizeInstructionBuilder().
+		SetAccount(account).
+		SetRentSysvar(ag_solanago.SysVarRentPubkey)
+}