[lldb] [llvm] [LLDB][Minidump] Add 64b support to LLDB's minidump file builder. (PR #95312)

[Greg Clayton via llvm-commits]

================
@@ -821,47 +908,285 @@ Status MinidumpFileBuilder::Dump(lldb::FileUP &core_file) const {
   Status error;
   size_t bytes_written;
 
-  bytes_written = header_size;
-  error = core_file->Write(&header, bytes_written);
-  if (error.Fail() || bytes_written != header_size) {
-    if (bytes_written != header_size)
+  m_core_file->SeekFromStart(0);
+  bytes_written = HEADER_SIZE;
+  error = m_core_file->Write(&header, bytes_written);
+  if (error.Fail() || bytes_written != HEADER_SIZE) {
+    if (bytes_written != HEADER_SIZE)
       error.SetErrorStringWithFormat(
-          "unable to write the header (written %zd/%zd)", bytes_written,
-          header_size);
+          "Unable to write the minidump header (written %zd/%zd)",
+          bytes_written, HEADER_SIZE);
     return error;
   }
+  return error;
+}
 
-  // write data
-  bytes_written = m_data.GetByteSize();
-  error = core_file->Write(m_data.GetBytes(), bytes_written);
-  if (error.Fail() || bytes_written != m_data.GetByteSize()) {
-    if (bytes_written != m_data.GetByteSize())
-      error.SetErrorStringWithFormat(
-          "unable to write the data (written %zd/%" PRIu64 ")", bytes_written,
-          m_data.GetByteSize());
-    return error;
-  }
+size_t MinidumpFileBuilder::GetCurrentDataEndOffset() const {
+  return m_data.GetByteSize() + m_saved_data_size;
+}
 
-  // write directories
+Status MinidumpFileBuilder::DumpDirectories() const {
+  Status error;
+  size_t bytes_written;
+  m_core_file->SeekFromStart(HEADER_SIZE);
   for (const Directory &dir : m_directories) {
-    bytes_written = directory_size;
-    error = core_file->Write(&dir, bytes_written);
-    if (error.Fail() || bytes_written != directory_size) {
-      if (bytes_written != directory_size)
+    bytes_written = DIRECTORY_SIZE;
+    error = m_core_file->Write(&dir, bytes_written);
+    if (error.Fail() || bytes_written != DIRECTORY_SIZE) {
+      if (bytes_written != DIRECTORY_SIZE)
         error.SetErrorStringWithFormat(
             "unable to write the directory (written %zd/%zd)", bytes_written,
-            directory_size);
+            DIRECTORY_SIZE);
       return error;
     }
   }
 
   return error;
 }
 
-size_t MinidumpFileBuilder::GetDirectoriesNum() const {
-  return m_directories.size();
+static size_t GetLargestRange(const Process::CoreFileMemoryRanges &ranges) {
+  size_t max_size = 0;
+  for (const auto &core_range : ranges)
+    max_size = std::max(max_size, core_range.range.size());
+  return max_size;
 }
 
-size_t MinidumpFileBuilder::GetCurrentDataEndOffset() const {
-  return sizeof(llvm::minidump::Header) + m_data.GetByteSize();
+Status
+MinidumpFileBuilder::AddMemoryList_32(Process::CoreFileMemoryRanges &ranges) {
+  std::vector<MemoryDescriptor> descriptors;
+  Status error;
+  if (ranges.size() == 0)
+    return error;
+
+  Log *log = GetLog(LLDBLog::Object);
+  size_t region_index = 0;
+  auto data_up = std::make_unique<DataBufferHeap>(GetLargestRange(ranges), 0);
+  for (const auto &core_range : ranges) {
+    // Take the offset before we write.
+    const size_t offset_for_data = GetCurrentDataEndOffset();
+    const addr_t addr = core_range.range.start();
+    const addr_t size = core_range.range.size();
+    const addr_t end = core_range.range.end();
+
+    LLDB_LOGF(log,
+              "AddMemoryList %zu/%zu reading memory for region "
+              "(%zu bytes) [%zx, %zx)",
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clayborg wrote:

Change `"(%zu bytes) [%zx, %zx)"` to `"(%" PRIu64 " bytes [%" PRIx64 ", %" PRIx64 ")"`

https://github.com/llvm/llvm-project/pull/95312