[aarm64] Fix GetSharedLibraryAddresses

This patch fixes a segmentation fault which occurs when using `--prof` flag on a Darwin ARM64 architecture.
See nodejs/node#36656

Change-Id: Idc3ce6c8fd8a24f76f1b356f629e37340045b51e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2609413
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72886}

AUTHORS

@@ -60,6 +60,7 @@ Andreas Anyuru <andreas.anyuru@gmail.com>
 Andrew Paprocki <andrew@ishiboo.com>
 Andrei Kashcha <anvaka@gmail.com>
 Anna Henningsen <anna@addaleax.net>
+Antoine du Hamel <duhamelantoine1995@gmail.com>
 Anton Bikineev <ant.bikineev@gmail.com>
 Bangfu Tao <bangfu.tao@samsung.com>
 Daniel Shelton <d1.shelton@samsung.com>

src/base/platform/platform-macos.cc

@@ -49,14 +49,14 @@ std::vector<OS::SharedLibraryAddress> OS::GetSharedLibraryAddresses() {
   for (unsigned int i = 0; i < images_count; ++i) {
     const mach_header* header = _dyld_get_image_header(i);
     if (header == nullptr) continue;
-#if V8_HOST_ARCH_X64
+#if V8_HOST_ARCH_I32
+    unsigned int size;
+    char* code_ptr = getsectdatafromheader(header, SEG_TEXT, SECT_TEXT, &size);
+#else
     uint64_t size;
     char* code_ptr = getsectdatafromheader_64(
         reinterpret_cast<const mach_header_64*>(header), SEG_TEXT, SECT_TEXT,
         &size);
-#else
-    unsigned int size;
-    char* code_ptr = getsectdatafromheader(header, SEG_TEXT, SECT_TEXT, &size);
 #endif
     if (code_ptr == nullptr) continue;
     const intptr_t slide = _dyld_get_image_vmaddr_slide(i);