Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 135 insertions, 0 deletions

diff --git a/toolkit/crashreporter/google-breakpad/src/common/linux/elfutils.h b/toolkit/crashreporter/google-breakpad/src/common/linux/elfutils.h
new file mode 100644
index 0000000000..aefb6cf5f8
--- /dev/null
+++ b/toolkit/crashreporter/google-breakpad/src/common/linux/elfutils.h
@@ -0,0 +1,135 @@
+// Copyright (c) 2012, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// elfutils.h: Utilities for dealing with ELF files.
+//
+
+#ifndef COMMON_LINUX_ELFUTILS_H_
+#define COMMON_LINUX_ELFUTILS_H_
+
+#include <elf.h>
+#include <link.h>
+#include <stdint.h>
+
+#include "common/memory_allocator.h"
+
+namespace google_breakpad {
+
+// Traits classes so consumers can write templatized code to deal
+// with specific ELF bits.
+struct ElfClass32 {
+  typedef Elf32_Addr Addr;
+  typedef Elf32_Dyn Dyn;
+  typedef Elf32_Ehdr Ehdr;
+  typedef Elf32_Nhdr Nhdr;
+  typedef Elf32_Phdr Phdr;
+  typedef Elf32_Shdr Shdr;
+  typedef Elf32_Half Half;
+  typedef Elf32_Off Off;
+  typedef Elf32_Sym Sym;
+  typedef Elf32_Word Word;
+
+  static const int kClass = ELFCLASS32;
+  static const uint16_t kMachine = EM_386;
+  static const size_t kAddrSize = sizeof(Elf32_Addr);
+  static constexpr const char* kMachineName = "x86";
+};
+
+struct ElfClass64 {
+  typedef Elf64_Addr Addr;
+  typedef Elf64_Dyn Dyn;
+  typedef Elf64_Ehdr Ehdr;
+  typedef Elf64_Nhdr Nhdr;
+  typedef Elf64_Phdr Phdr;
+  typedef Elf64_Shdr Shdr;
+  typedef Elf64_Half Half;
+  typedef Elf64_Off Off;
+  typedef Elf64_Sym Sym;
+  typedef Elf64_Word Word;
+
+  static const int kClass = ELFCLASS64;
+  static const uint16_t kMachine = EM_X86_64;
+  static const size_t kAddrSize = sizeof(Elf64_Addr);
+  static constexpr const char* kMachineName = "x86_64";
+};
+
+bool IsValidElf(const void* elf_header);
+int ElfClass(const void* elf_base);
+
+// Attempt to find a section named |section_name| of type |section_type|
+// in the ELF binary data at |elf_mapped_base|. On success, returns true
+// and sets |*section_start| to point to the start of the section data,
+// and |*section_size| to the size of the section's data.
+bool FindElfSection(const void *elf_mapped_base,
+                    const char *section_name,
+                    uint32_t section_type,
+                    const void **section_start,
+                    size_t *section_size);
+
+// Internal helper method, exposed for convenience for callers
+// that already have more info.
+template<typename ElfClass>
+const typename ElfClass::Shdr*
+FindElfSectionByName(const char* name,
+                     typename ElfClass::Word section_type,
+                     const typename ElfClass::Shdr* sections,
+                     const char* section_names,
+                     const char* names_end,
+                     int nsection);
+
+struct ElfSegment {
+  const void* start;
+  size_t size;
+};
+
+// Attempt to find all segments of type |segment_type| in the ELF
+// binary data at |elf_mapped_base|. On success, returns true and fills
+// |*segments| with a list of segments of the given type.
+bool FindElfSegments(const void* elf_mapped_base,
+                     uint32_t segment_type,
+                     wasteful_vector<ElfSegment>* segments);
+
+// Convert an offset from an Elf header into a pointer to the mapped
+// address in the current process. Takes an extra template parameter
+// to specify the return type to avoid having to dynamic_cast the
+// result.
+template<typename ElfClass, typename T>
+const T*
+GetOffset(const typename ElfClass::Ehdr* elf_header,
+          typename ElfClass::Off offset);
+
+// Read the value of DT_SONAME from the elf file mapped at |elf_base|. Returns
+// true and fills |soname| with the result if found.
+bool ElfFileSoNameFromMappedFile(const void* elf_base,
+                                 char* soname,
+                                 size_t soname_size);
+
+}  // namespace google_breakpad
+
+#endif  // COMMON_LINUX_ELFUTILS_H_