Generalize compression tool
1. One binary for all architectures
2. Generalize (and slightly improve) compression
2.1 works on all relocation types (rela?.dyn section only so far)
2.2 Uses same format to encode ElfW(Rel) as well as ElfW(Rela) tables
Bug: 18051137
Change-Id: I66c95d9076954ca115816fc577d0f5ef274e5e72
diff --git a/tools/relocation_packer/src/sleb128.h b/tools/relocation_packer/src/sleb128.h
index 3544543..fa0a246 100644
--- a/tools/relocation_packer/src/sleb128.h
+++ b/tools/relocation_packer/src/sleb128.h
@@ -22,6 +22,7 @@
namespace relocation_packer {
// Encode packed words as a signed LEB128 byte stream.
+template<typename int_t>
class Sleb128Encoder {
public:
// Explicit (but empty) constructor and destructor, for chromium-style.
@@ -30,11 +31,11 @@
// Add a value to the encoding stream.
// |value| is the signed int to add.
- void Enqueue(ELF::Sxword value);
+ void Enqueue(int_t value);
// Add a vector of values to the encoding stream.
// |values| is the vector of signed ints to add.
- void EnqueueAll(const std::vector<ELF::Sxword>& values);
+ void EnqueueAll(const std::vector<int_t>& values);
// Retrieve the encoded representation of the values.
// |encoding| is the returned vector of encoded data.
@@ -46,21 +47,22 @@
};
// Decode a LEB128 byte stream to produce packed words.
+template <typename int_t>
class Sleb128Decoder {
public:
// Create a new decoder for the given encoded stream.
// |encoding| is the vector of encoded data.
- explicit Sleb128Decoder(const std::vector<uint8_t>& encoding);
+ explicit Sleb128Decoder(const std::vector<uint8_t>& encoding, size_t start_with);
// Explicit (but empty) destructor, for chromium-style.
~Sleb128Decoder();
// Retrieve the next value from the encoded stream.
- ELF::Sxword Dequeue();
+ int_t Dequeue();
// Retrieve all remaining values from the encoded stream.
// |values| is the vector of decoded data.
- void DequeueAll(std::vector<ELF::Sxword>* values);
+ void DequeueAll(std::vector<int_t>* values);
private:
// Encoded LEB128 stream.