From 202ab4a757d6f2a5790f4c1a5871ed9972526294 Mon Sep 17 00:00:00 2001
From: blacktop <blacktop@users.noreply.github.com>
Date: Tue, 8 Oct 2024 19:40:33 -0600
Subject: [PATCH] Update swift.go

---
 pkg/dyld/swift.go | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/pkg/dyld/swift.go b/pkg/dyld/swift.go
index b81fc9004..4ef8a1fa8 100644
--- a/pkg/dyld/swift.go
+++ b/pkg/dyld/swift.go
@@ -15,12 +15,16 @@ import (
 	iswift "github.com/blacktop/ipsw/internal/swift"
 )
 
+const MAX_PRESPECIALIZED_METADATA_TABLES = 8
+
 type SwiftOptimizationHeader struct {
-	Version                                    uint32
-	Padding                                    uint32
-	TypeConformanceHashTableCacheOffset        uint64
-	MetadataConformanceHashTableCacheOffset    uint64
-	ForeignTypeConformanceHashTableCacheOffset uint64
+	Version                                     uint32
+	Padding                                     uint32
+	TypeConformanceHashTableCacheOffset         uint64
+	MetadataConformanceHashTableCacheOffset     uint64
+	ForeignTypeConformanceHashTableCacheOffset  uint64
+	PrespecializationDataCacheOffset            uint64
+	PrespecializedMetadataHashTableCacheOffsets [MAX_PRESPECIALIZED_METADATA_TABLES]uint64
 }
 
 type SwiftProtocolConformance struct {
@@ -223,7 +227,7 @@ func (f *File) getSwiftTypeHashTable() (*SwiftHashTable, error) {
 			return nil, fmt.Errorf("failed to read %T: %v", h, err)
 		}
 
-		if h.Version != 1 {
+		if h.Version > 3 {
 			return nil, fmt.Errorf("unsupported Swift optimization version: %d", h.Version)
 		}
 
@@ -259,7 +263,7 @@ func (f *File) getSwiftMetadataTable() (*SwiftHashTable, error) {
 			return nil, fmt.Errorf("failed to read %T: %v", h, err)
 		}
 
-		if h.Version != 1 {
+		if h.Version > 3 {
 			return nil, fmt.Errorf("unsupported Swift optimization version: %d", h.Version)
 		}
 
@@ -295,7 +299,7 @@ func (f *File) getSwiftForeignTypeHashTable() (*SwiftHashTable, error) {
 			return nil, fmt.Errorf("failed to read %T: %v", h, err)
 		}
 
-		if h.Version != 1 {
+		if h.Version > 3 {
 			return nil, fmt.Errorf("unsupported Swift optimization version: %d", h.Version)
 		}