diff options
| author | Evgenii Stepanov <eugenis@google.com> | 2020-12-15 13:55:32 -0800 |
|---|---|---|
| committer | Evgenii Stepanov <eugenis@google.com> | 2021-01-06 16:08:18 -0800 |
| commit | 8564b8d9e61580bef3bd5018cf63e37c78e40053 (patch) | |
| tree | 31105008dfcd942690f7143595121c2ab5d2bde8 /linker/linker_main.cpp | |
| parent | dec48bdd9ee090f3b0e3ff22dcac4689a146e8d0 (diff) | |
Use ELF notes to set the desired memory tagging level.
Use a note in executables to specify
(none|sync|async) heap tagging level. To be extended with (heap x stack x
globals) in the future. A missing note disables all tagging.
Bug: b/135772972
Test: bionic-unit-tests (in a future change)
Change-Id: Iab145a922c7abe24cdce17323f9e0c1063cc1321
Diffstat (limited to 'linker/linker_main.cpp')
| -rw-r--r-- | linker/linker_main.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/linker/linker_main.cpp b/linker/linker_main.cpp index aad8f6f6f..59e803665 100644 --- a/linker/linker_main.cpp +++ b/linker/linker_main.cpp @@ -66,6 +66,8 @@ static void get_elf_base_from_phdr(const ElfW(Phdr)* phdr_table, size_t phdr_cou static void set_bss_vma_name(soinfo* si); +void __libc_init_mte(const void* phdr_start, size_t phdr_count, uintptr_t load_bias); + // These should be preserved static to avoid emitting // RELATIVE relocations for the part of the code running // before linker links itself. @@ -403,6 +405,8 @@ static ElfW(Addr) linker_main(KernelArgumentBlock& args, const char* exe_to_load strerror(errno)); } } + + __libc_init_mte(somain->phdr, somain->phnum, somain->load_bias); #endif // Register the main executable and the linker upfront to have |