--- /dev/null
+++ dyld/dyld-1235.2/mach_o/Instructions.cpp
@@ -0,0 +1,158 @@
+/*
+ * Copyright (c) 2024 Apple Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "Instructions.h"
+
+namespace mach_o {
+
+
+bool Instructions::arm64::isADRP(uint32_t instruction, AdrpInfo& info)
+{
+    if ( (instruction & 0x9F000000) == 0x90000000 ) {
+        info.dstReg     = (instruction & 0x1F);
+        uint32_t lo2    = (instruction & 0x60000000) >> 29;
+        uint32_t hi19   = (instruction & 0x01FFFFE0) >> 3;
+        info.pageOffset = (int32_t)(hi19 + lo2);
+        if ( info.pageOffset & 0x00100000 )
+            info.pageOffset |= 0xFFE00000;  // sign extend 21-bits
+        return true;
+    }
+    return false;
+}
+
+bool Instructions::arm64::isB26(uint32_t instruction, int32_t& delta)
+{
+    if ( (instruction & 0x7C000000) == 0x14000000 ) {
+        delta = (int32_t)((instruction & 0x03FFFFFF) << 2);
+        if ( delta & 0x08000000 )
+            delta |= 0xF0000000;
+        return true;
+    }
+    return false;
+}
+
+bool Instructions::arm64::isImm12(uint32_t instruction, Imm12Info& info)
+{
+    if ( (instruction & 0x3B000000) != 0x39000000 ) {
+        // not a load or store
+        if ( (instruction & 0x7FC00000) == 0x11000000 ) {
+            // is ADD instruction
+            info.dstReg   = (instruction & 0x1F);
+            info.srcReg   = ((instruction>>5) & 0x1F);
+            info.scale    = 1;
+            info.offset   = ((instruction >> 10) & 0x0FFF);
+            info.kind     = Imm12Info::Kind::add;
+            info.signEx   = false;
+            info.isFloat  = false;
+            return true;
+        }
+        return false;
+    }
+    info.dstReg   = (instruction & 0x1F);
+    info.srcReg   = ((instruction>>5) & 0x1F);
+    info.signEx   = false;
+    info.isFloat  = ((instruction & 0x04000000) != 0 );
+    switch (instruction & 0xC0C00000) {
+        case 0x00000000:
+            info.scale   = 1;
+            info.kind    = Imm12Info::Kind::store;
+            break;
+        case 0x00400000:
+            info.scale   = 1;
+            info.kind    = Imm12Info::Kind::load;
+            break;
+        case 0x00800000:
+            if ( info.isFloat ) {
+                info.scale   = 16;
+                info.kind    = Imm12Info::Kind::store;
+            }
+            else {
+                info.scale   = 1;
+                info.kind    = Imm12Info::Kind::load;
+                info.signEx  = true;
+            }
+            break;
+        case 0x00C00000:
+            if ( info.isFloat ) {
+                info.scale  = 16;
+                info.kind   = Imm12Info::Kind::load;
+            }
+            else {
+                info.scale  = 1;
+                info.kind   = Imm12Info::Kind::load;
+                info.signEx = true;
+            }
+            break;
+        case 0x40000000:
+            info.scale   = 2;
+            info.kind    = Imm12Info::Kind::store;
+            break;
+        case 0x40400000:
+            info.scale   = 2;
+            info.kind    = Imm12Info::Kind::load;
+            break;
+        case 0x40800000:
+            info.scale    = 2;
+            info.kind     = Imm12Info::Kind::load;
+            info.signEx   = true;
+            break;
+        case 0x40C00000:
+            info.scale    = 2;
+            info.kind     = Imm12Info::Kind::load;
+            info.signEx   = true;
+            break;
+        case 0x80000000:
+            info.scale   = 4;
+            info.kind    = Imm12Info::Kind::store;
+            break;
+        case 0x80400000:
+            info.scale   = 4;
+            info.kind    = Imm12Info::Kind::load;
+            break;
+        case 0x80800000:
+            info.scale   = 4;
+            info.kind    = Imm12Info::Kind::load;
+            info.signEx  = true;
+            break;
+        case 0xC0000000:
+            info.scale   = 8;
+            info.kind    = Imm12Info::Kind::store;
+            break;
+        case 0xC0400000:
+            info.scale   = 8;
+            info.kind    = Imm12Info::Kind::load;
+            break;
+        default:
+            return false;
+    }
+    info.offset = ((instruction >> 10) & 0x0FFF) * info.scale;
+    return true;
+}
+
+
+
+} // namespace mach_o