Implement support for linker rosegment option.
The rosegment linker option results in two maps containing the elf data
existing. One is an execute map where the code lives, and the other is the
read-only segment which contains the elf header information. If the file
backing a shared library in memory is not readable, then the new code
will attempt to find the read-only map that has the same name as the
current execute segment, and that is at offest zero in the file.
Add new unit tests for this functionality.
Add the missing MapInfoCreateMemoryTest.cpp to the list of tests.
Bug: 109657296
Test: Pass new unit tests.
Test: All unit libbacktrace/libunwindstack tests pass with rosegment enabled.
Change-Id: If8f69e4a067d77b3f2a7c31e2e5cd989a0702a8c
diff --git a/libunwindstack/Maps.cpp b/libunwindstack/Maps.cpp
index e676a5a..8729871 100644
--- a/libunwindstack/Maps.cpp
+++ b/libunwindstack/Maps.cpp
@@ -66,13 +66,13 @@
if (strncmp(name, "/dev/", 5) == 0 && strncmp(name + 5, "ashmem/", 7) != 0) {
flags |= unwindstack::MAPS_FLAGS_DEVICE_MAP;
}
- maps_.push_back(new MapInfo(start, end, pgoff, flags, name));
+ maps_.push_back(new MapInfo(this, start, end, pgoff, flags, name));
});
}
void Maps::Add(uint64_t start, uint64_t end, uint64_t offset, uint64_t flags,
const std::string& name, uint64_t load_bias) {
- MapInfo* map_info = new MapInfo(start, end, offset, flags, name);
+ MapInfo* map_info = new MapInfo(this, start, end, offset, flags, name);
map_info->load_bias = load_bias;
maps_.push_back(map_info);
}
@@ -97,7 +97,7 @@
if (strncmp(name, "/dev/", 5) == 0 && strncmp(name + 5, "ashmem/", 7) != 0) {
flags |= unwindstack::MAPS_FLAGS_DEVICE_MAP;
}
- maps_.push_back(new MapInfo(start, end, pgoff, flags, name));
+ maps_.push_back(new MapInfo(this, start, end, pgoff, flags, name));
});
}