Brian Carlstrom | e24fa61 | 2011-09-29 00:53:55 -0700 | [diff] [blame] | 1 | // Copyright 2011 Google Inc. All Rights Reserved. |
| 2 | |
| 3 | #include "oat.h" |
| 4 | |
| 5 | #include <zlib.h> |
| 6 | |
| 7 | namespace art { |
| 8 | |
| 9 | const uint8_t OatHeader::kOatMagic[] = { 'o', 'a', 't', '\n' }; |
| 10 | const uint8_t OatHeader::kOatVersion[] = { '0', '0', '1', '\0' }; |
| 11 | |
| 12 | OatHeader::OatHeader(const std::vector<const DexFile*>* dex_files) { |
| 13 | memcpy(magic_, kOatMagic, sizeof(kOatMagic)); |
| 14 | memcpy(version_, kOatVersion, sizeof(kOatVersion)); |
| 15 | adler32_checksum_ = adler32(0L, Z_NULL, 0); |
| 16 | dex_file_count_ = dex_files->size(); |
| 17 | UpdateChecksum(&dex_file_count_, sizeof(dex_file_count_)); |
| 18 | executable_offset_ = 0; |
| 19 | } |
| 20 | |
| 21 | bool OatHeader::IsValid() const { |
| 22 | if (memcmp(magic_, kOatMagic, sizeof(kOatMagic) != 0)) { |
| 23 | return false; |
| 24 | } |
| 25 | if (memcmp(version_, kOatVersion, sizeof(kOatVersion) != 0)) { |
| 26 | return false; |
| 27 | } |
| 28 | return true; |
| 29 | } |
| 30 | |
| 31 | const char* OatHeader::GetMagic() const { |
| 32 | CHECK(IsValid()); |
| 33 | return reinterpret_cast<const char*>(magic_); |
| 34 | } |
| 35 | |
| 36 | uint32_t OatHeader::GetDexFileCount() const { |
| 37 | DCHECK(IsValid()); |
| 38 | return dex_file_count_; |
| 39 | } |
| 40 | |
| 41 | uint32_t OatHeader::GetChecksum() const { |
| 42 | CHECK(IsValid()); |
| 43 | return adler32_checksum_; |
| 44 | } |
| 45 | |
| 46 | void OatHeader::UpdateChecksum(const void* data, size_t length) { |
| 47 | DCHECK(IsValid()); |
| 48 | const uint8_t* bytes = reinterpret_cast<const uint8_t*>(data); |
| 49 | adler32_checksum_ = adler32(adler32_checksum_, bytes, length); |
| 50 | } |
| 51 | |
| 52 | uint32_t OatHeader::GetExecutableOffset() const { |
| 53 | DCHECK(IsValid()); |
Elliott Hughes | 06b37d9 | 2011-10-16 11:51:29 -0700 | [diff] [blame] | 54 | DCHECK_ALIGNED(executable_offset_, kPageSize); |
Brian Carlstrom | e24fa61 | 2011-09-29 00:53:55 -0700 | [diff] [blame] | 55 | CHECK_GT(executable_offset_, sizeof(OatHeader)); |
| 56 | return executable_offset_; |
| 57 | } |
| 58 | |
| 59 | void OatHeader::SetExecutableOffset(uint32_t executable_offset) { |
Elliott Hughes | 06b37d9 | 2011-10-16 11:51:29 -0700 | [diff] [blame] | 60 | DCHECK_ALIGNED(executable_offset, kPageSize); |
Brian Carlstrom | e24fa61 | 2011-09-29 00:53:55 -0700 | [diff] [blame] | 61 | CHECK_GT(executable_offset, sizeof(OatHeader)); |
| 62 | DCHECK(IsValid()); |
| 63 | DCHECK_EQ(executable_offset_, 0U); |
| 64 | executable_offset_ = executable_offset; |
| 65 | UpdateChecksum(&executable_offset_, sizeof(executable_offset)); |
| 66 | } |
| 67 | |
Brian Carlstrom | 3320cf4 | 2011-10-04 14:58:28 -0700 | [diff] [blame] | 68 | OatMethodOffsets::OatMethodOffsets() |
| 69 | : code_offset_(0), |
| 70 | frame_size_in_bytes_(0), |
| 71 | return_pc_offset_in_bytes_(0), |
| 72 | core_spill_mask_(0), |
| 73 | fp_spill_mask_(0), |
| 74 | mapping_table_offset_(0), |
| 75 | vmap_table_offset_(0), |
| 76 | invoke_stub_offset_(0) {} |
| 77 | |
| 78 | OatMethodOffsets::OatMethodOffsets(uint32_t code_offset, |
| 79 | uint32_t frame_size_in_bytes, |
| 80 | uint32_t return_pc_offset_in_bytes, |
| 81 | uint32_t core_spill_mask, |
| 82 | uint32_t fp_spill_mask, |
| 83 | uint32_t mapping_table_offset, |
| 84 | uint32_t vmap_table_offset, |
| 85 | uint32_t invoke_stub_offset) |
| 86 | : code_offset_(code_offset), |
| 87 | frame_size_in_bytes_(frame_size_in_bytes), |
| 88 | return_pc_offset_in_bytes_(return_pc_offset_in_bytes), |
| 89 | core_spill_mask_(core_spill_mask), |
| 90 | fp_spill_mask_(fp_spill_mask), |
| 91 | mapping_table_offset_(mapping_table_offset), |
| 92 | vmap_table_offset_(vmap_table_offset), |
| 93 | invoke_stub_offset_(invoke_stub_offset) {} |
| 94 | |
| 95 | OatMethodOffsets::~OatMethodOffsets() {} |
| 96 | |
Brian Carlstrom | e24fa61 | 2011-09-29 00:53:55 -0700 | [diff] [blame] | 97 | } // namespace art |