[PATCH] D86254: [libunwind] Minor fixes in libunwind

[Ryan Prichard via Phabricator via llvm-commits]

rprichard updated this revision to Diff 287111.
rprichard edited the summary of this revision.
rprichard added a comment.

Update summary.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D86254/new/

https://reviews.llvm.org/D86254

Files:
  libunwind/src/AddressSpace.hpp
  libunwind/src/CMakeLists.txt
  libunwind/src/config.h


Index: libunwind/src/config.h
===================================================================
--- libunwind/src/config.h
+++ libunwind/src/config.h
@@ -31,10 +31,10 @@
 // Platform specific configuration defines.
 #ifdef __APPLE__
   #if defined(FOR_DYLD)
-    #define _LIBUNWIND_SUPPORT_COMPACT_UNWIND
+    #define _LIBUNWIND_SUPPORT_COMPACT_UNWIND 1
   #else
-    #define _LIBUNWIND_SUPPORT_COMPACT_UNWIND
-    #define _LIBUNWIND_SUPPORT_DWARF_UNWIND   1
+    #define _LIBUNWIND_SUPPORT_COMPACT_UNWIND 1
+    #define _LIBUNWIND_SUPPORT_DWARF_UNWIND 1
   #endif
 #elif defined(_WIN32)
   #ifdef __SEH__
Index: libunwind/src/CMakeLists.txt
===================================================================
--- libunwind/src/CMakeLists.txt
+++ libunwind/src/CMakeLists.txt
@@ -42,9 +42,12 @@
     dwarf2.h
     DwarfInstructions.hpp
     DwarfParser.hpp
+    EHHeaderParser.hpp
+    FrameHeaderCache.hpp
     libunwind_ext.h
     Registers.hpp
     RWMutex.hpp
+    Unwind-EHABI.h
     UnwindCursor.hpp
     ../include/libunwind.h
     ../include/unwind.h
Index: libunwind/src/AddressSpace.hpp
===================================================================
--- libunwind/src/AddressSpace.hpp
+++ libunwind/src/AddressSpace.hpp
@@ -17,6 +17,12 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include "libunwind.h"
+#include "config.h"
+#include "dwarf2.h"
+#include "EHHeaderParser.hpp"
+#include "Registers.hpp"
+
 #ifndef _LIBUNWIND_USE_DLADDR
   #if !defined(_LIBUNWIND_IS_BAREMETAL) && !defined(_WIN32)
     #define _LIBUNWIND_USE_DLADDR 1
@@ -39,12 +45,6 @@
 };
 #endif
 
-#include "libunwind.h"
-#include "config.h"
-#include "dwarf2.h"
-#include "EHHeaderParser.hpp"
-#include "Registers.hpp"
-
 #ifdef __APPLE__
 
   struct dyld_unwind_sections
@@ -414,8 +414,9 @@
 #if defined(_LIBUNWIND_USE_FRAME_HEADER_CACHE)
 #include "FrameHeaderCache.hpp"
 
-// There should be just one of these per process.
-static FrameHeaderCache ProcessFrameHeaderCache;
+// Typically there is one cache per process, but when libunwind is built as a
+// hermetic static library, then each shared object may have its own cache.
+static FrameHeaderCache TheFrameHeaderCache;
 #endif
 
 static bool checkAddrInSegment(const Elf_Phdr *phdr, size_t image_base,
@@ -438,7 +439,7 @@
   if (pinfo->dlpi_phnum == 0 || cbdata->targetAddr < pinfo->dlpi_addr)
     return 0;
 #if defined(_LIBUNWIND_USE_FRAME_HEADER_CACHE)
-  if (ProcessFrameHeaderCache.find(pinfo, pinfo_size, data))
+  if (TheFrameHeaderCache.find(pinfo, pinfo_size, data))
     return 1;
 #endif
 
@@ -469,7 +470,7 @@
     }
     if (found_obj && found_hdr) {
 #if defined(_LIBUNWIND_USE_FRAME_HEADER_CACHE)
-      ProcessFrameHeaderCache.add(cbdata->sects);
+      TheFrameHeaderCache.add(cbdata->sects);
 #endif
       return 1;
     }


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