From e42f2456b7004c767dce27d62b57b4a2ee529316 Mon Sep 17 00:00:00 2001
From: Joshua Peraza <jperaza@chromium.org>
Date: Mon, 26 Nov 2018 09:53:17 -0800
Subject: Add mac dump_syms support for arm64e

Change-Id: I6a25b47d4fc5e42ff9fa30107b563dcf1d51c0d1
Reviewed-on: https://chromium-review.googlesource.com/c/1351352
Reviewed-by: Mark Mentovai <mark@chromium.org>
---
 src/common/mac/arch_utilities.cc | 41 ++++++++++++++++++++++++++++++++++++----
 1 file changed, 37 insertions(+), 4 deletions(-)

(limited to 'src/common')

diff --git a/src/common/mac/arch_utilities.cc b/src/common/mac/arch_utilities.cc
index c9225e00..c0e4bac5 100644
--- a/src/common/mac/arch_utilities.cc
+++ b/src/common/mac/arch_utilities.cc
@@ -46,15 +46,31 @@
 #define CPU_SUBTYPE_ARM64_ALL (static_cast<cpu_subtype_t>(0))
 #endif  // CPU_SUBTYPE_ARM64_ALL
 
+#ifndef CPU_SUBTYPE_ARM64_E
+#define CPU_SUBTYPE_ARM64_E (static_cast<cpu_subtype_t>(2))
+#endif  // CPU_SUBTYPE_ARM64_E
+
 namespace {
 
-const NXArchInfo* ArchInfo_arm64() {
+const NXArchInfo* ArchInfo_arm64(cpu_subtype_t cpu_subtype) {
+  const char* name = NULL;
+  switch (cpu_subtype) {
+    case CPU_SUBTYPE_ARM64_ALL:
+      name = "arm64";
+      break;
+    case CPU_SUBTYPE_ARM64_E:
+      name = "arm64e";
+      break;
+    default:
+      return NULL;
+  }
+
   NXArchInfo* arm64 = new NXArchInfo;
   *arm64 = *NXGetArchInfoFromCpuType(CPU_TYPE_ARM,
                                      CPU_SUBTYPE_ARM_V7);
-  arm64->name = "arm64";
+  arm64->name = name;
   arm64->cputype = CPU_TYPE_ARM64;
-  arm64->cpusubtype = CPU_SUBTYPE_ARM64_ALL;
+  arm64->cpusubtype = cpu_subtype;
   arm64->description = "arm 64";
   return arm64;
 }
@@ -79,6 +95,10 @@ const NXArchInfo* BreakpadGetArchInfoFromName(const char* arch_name) {
     return BreakpadGetArchInfoFromCpuType(CPU_TYPE_ARM64,
                                           CPU_SUBTYPE_ARM64_ALL);
 
+  if (!strcmp("arm64e", arch_name))
+    return BreakpadGetArchInfoFromCpuType(CPU_TYPE_ARM64,
+                                          CPU_SUBTYPE_ARM64_E);
+
   // TODO: Remove this when the OS knows about armv7s.
   if (!strcmp("armv7s", arch_name))
     return BreakpadGetArchInfoFromCpuType(CPU_TYPE_ARM, CPU_SUBTYPE_ARM_V7S);
@@ -90,10 +110,15 @@ const NXArchInfo* BreakpadGetArchInfoFromCpuType(cpu_type_t cpu_type,
                                                  cpu_subtype_t cpu_subtype) {
   // TODO: Remove this when the OS knows about arm64.
   if (cpu_type == CPU_TYPE_ARM64 && cpu_subtype == CPU_SUBTYPE_ARM64_ALL) {
-    static const NXArchInfo* arm64 = ArchInfo_arm64();
+    static const NXArchInfo* arm64 = ArchInfo_arm64(cpu_subtype);
     return arm64;
   }
 
+  if (cpu_type == CPU_TYPE_ARM64 && cpu_subtype == CPU_SUBTYPE_ARM64_E) {
+    static const NXArchInfo* arm64e = ArchInfo_arm64(cpu_subtype);
+    return arm64e;
+  }
+
   // TODO: Remove this when the OS knows about armv7s.
   if (cpu_type == CPU_TYPE_ARM && cpu_subtype == CPU_SUBTYPE_ARM_V7S) {
     static const NXArchInfo* armv7s = ArchInfo_armv7s();
@@ -114,6 +139,7 @@ enum Architecture {
   kArch_x86_64h,
   kArch_arm,
   kArch_arm64,
+  kArch_arm64e,
   kArch_ppc,
   // This must be last.
   kNumArchitectures
@@ -157,6 +183,13 @@ const NXArchInfo kKnownArchitectures[] = {
     NX_LittleEndian,
     "ARM64"
   },
+  {
+    "arm64e",
+    CPU_TYPE_ARM64,
+    CPU_SUBTYPE_ARM64_E,
+    NX_LittleEndian,
+    "ARM64e"
+  },
   {
     "ppc",
     CPU_TYPE_POWERPC,
-- 
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