Factored out common ELF processing into a common superclass, an x86 subclass, and an initial ARM subclass.

Created a new disassembler virtual class, DisassemblerElf32, that
implements the common functions for processing ELF 32-bit files.  This
class is defined in disassembler_elf_32.{h|cc}, and has nearly all of
the methods and data that used to be in
disassembler_elf_32_x86.{h|cc}.  This class has two subclasses, one
for x86 and one for arm, which implement the architecture-specific
parts for generating courgette patches, namely extracting relative and
absolute addresses.  The ARM subclass is just a shell, but still
yields correct courgette patches.

The rest of the files add new enums for ARM and use the ARM subclasses
for the courgette command-line tool.

BUG=

Review URL: https://chromiumcodereview.appspot.com/17325003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@207388 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 5 insertions, 0 deletions

diff --git a/courgette/types_elf.h b/courgette/types_elf.h
index 9708486..f7fce71 100644
--- a/courgette/types_elf.h
+++ b/courgette/types_elf.h
@@ -50,6 +50,7 @@ enum e_type_values {
 enum e_machine_values {
   EM_NONE = 0, // No machine
   EM_386 = 3, // Intel Architecture
+  EM_ARM = 40, // ARM Architecture
   EM_x86_64 = 62, // Intel x86-64 Architecture
   // Other values skipped
 };
@@ -140,4 +141,8 @@ enum elf32_rel_386_type_values {
   R_386_TLS_TPOFF = 14,
 };
 
+enum elf32_rel_arm_type_values {
+  R_ARM_RELATIVE = 23,
+};
+
 #endif  // COURGETTE_ELF_TYPES_H_