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fix: linker64 static symbols lookup with suffix

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On Android 15+ in some devices, the symbol names of some static variables such as `solist`, has a `llvm` suffix in its exported name.
Current commit handles this case and close #63 as fixed.
This commit is contained in:
JingMatrix
2024-11-29 08:16:54 +01:00
parent 9bcbec91aa
commit 3d79939d7b
3 changed files with 134 additions and 71 deletions
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28
loader/src/common/elf_util.cpp
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@@ -179,6 +179,7 @@ ElfW(Addr) ElfImg::LinearLookup(std::string_view name) const {
}
}
}
if (auto i = symtabs_.find(name); i != symtabs_.end()) {
return i->second->st_value;
} else {
@@ -186,6 +187,33 @@ ElfW(Addr) ElfImg::LinearLookup(std::string_view name) const {
}
}
std::string_view ElfImg::LinearLookupByPrefix(std::string_view name) const {
if (symtabs_.empty()) {
symtabs_.reserve(symtab_count);
if (symtab_start != nullptr && symstr_offset_for_symtab != 0) {
for (ElfW(Off) i = 0; i < symtab_count; i++) {
unsigned int st_type = ELF_ST_TYPE(symtab_start[i].st_info);
const char *st_name = offsetOf<const char *>(header, symstr_offset_for_symtab +
symtab_start[i].st_name);
if ((st_type == STT_FUNC || st_type == STT_OBJECT) && symtab_start[i].st_size) {
symtabs_.emplace(st_name, &symtab_start[i]);
}
}
}
}
auto size = name.size();
for (auto symtab : symtabs_) {
if (symtab.first.size() < size) continue;
if (symtab.first.substr(0, size) == name) {
return symtab.first;
}
}
return "";
}
ElfImg::~ElfImg() {
//open elf file local