Commit Graph

7 Commits

Author SHA1 Message Date
Colin Cross 86803cfe6e add a library to report build numbers without causing rebuilds
Allow native modules to specify use_version_lib, which will make
an android::build::GetBuildNumber() function available.  For host
builds, the function will return the build number at the time that
the module was linked.  For device modules it will return the
value of the ro.build.version.incremental property.

Bug: 71719137
Test: build_version_test
Test: m build_version_test && touch build/make/core/Makefile build/soong/cc/libbuildversion/tests/build_version_test.cpp && m build_version_test shows different build numbers for binary and library tests.
Change-Id: I6f7d40b7574bb8206866c4e39bad9c710c796e32
2018-03-02 16:55:51 -08:00
Colin Cross 8673b5b959 Rewrite symbol_inject to be testable
Parse the machine-specific symbol tables into a custom symbol table
object and use a single function to find the offset and size of the
symbol in the custom table.  Make the functions to convert a
machine-specific symbol table into the custom table also take mocks,
and provide functions to dump mocks from real files.  Add tests
that take the mocks and verify they produce the right offset and
size.

Test: cmd/symbol_inject/*_test.go
Change-Id: I25654032b5017dd13a9a1fe29f8b8826ce5bc82b
2018-03-02 16:47:13 -08:00
Colin Cross dfce764476 Fix finding next symbol when multiple symbols have the same address
Some exe files have a .data symbol at the same address as the
soong_build_number symbol.  If the .data symbol is after
soong_build_number in the symbol list, symbol_inject would think
the end address was the same as the start address, and use
uint32(-1) as the size.

Use sort.Search to find the first symbol whose section number is
the same as the target symbol, but whose address is higher than
the target symbol.

Test: manual
Change-Id: I51d6e53c6b906222ba68c5cf93be944843e23550
2018-02-28 15:04:59 -08:00
Colin Cross c4a18e0291 Sort macho symbol table entries
macho symbol table entries are not always in order, which breaks
finding the next symbol to find the size of the target symbol.

Test: build_version_test
Change-Id: I41d1c3c3ff9929694e9ec2b034553d6b7ddef937
2018-02-23 22:45:55 -08:00
Colin Cross 64c6d4bf14 Fix symbol_inject on win32 exes
Win32 exes seem to prefix each symbol with an underscore like
macho.

Test: build_version_test
Change-Id: I9de0a0f5f25f93ad17d34b7c1b993511c77a57eb
2018-02-23 18:24:48 -08:00
Colin Cross 52226ad920 Fix injecting data into a .o file
Use section.Offset instead of Addr.

Test: symbol_inject -i test.o -o test2.o -s symbol -v value
Change-Id: I9c54a5a245e7674b8370fc27ba7d0b9995f2ed08
2018-02-20 17:54:20 +00:00
Colin Cross 5498f8548b Add a tool to inject data into an elf, macho, or PE symbol
Test: symbol_inject -i a.out -o a.out2 -s symbol -v value
Change-Id: I16cd8facbae754f679bef07ab0ba23638286e1d7
2018-02-06 19:12:21 +00:00