We were not properly converting dots to slashes internally for package names
and we did not properly handle Method.getAnnotations and
Method.getAnnotation(Class<T>) on methods without any annotations.
Added some tests to cover these cases.
The usage statement for the bootimage-generator now looks like this:
build/linux-x86_64-bootimage/bootimage-generator \
-cp <classpath> \
-bootimage <bootimage file> \
-codeimage <codeimage file> \
[-entry <class name>[.<method name>[<method spec>]]] \
[-bootimage-symbols <start symbol name>:<end symbol name>] \
[-codeimage-symbols <start symbol name>:<end symbol name>]
When link time optimization is enabled, we need to remind the compiler
that we're targeting i586 when linking so it can resolve atomic
operations like __sync_bool_compare_and_swap.
When link time optimization is enabled, we need to remind the compiler
that we're targeting i586 when linking so it can resolve atomic
operations like __sync_bool_compare_and_swap.
The JRE lib dir for OpenJDK 7 on OS X seems to be just "lib", not
e.g. "lib/amd64" by default, so we use that now. Also, the default
library compatibility version for libjvm.dylib is 0.0.0, but OpenJDK
wants 1.0.0, so we set it explicitly.
We never define atomicCompareAndSwap64 for ARM or PowerPC, and
apparently only very recent ARM chips support it, so we must fall back
to synchronization-based emulation.
On Ubuntu 11.10, the optimized build was breaking, apparently because
it was eliminating most of the symbols defined in assembly code
(e.g. vmJump) as unreachable when linking libjvm.so, which left
avian-dynamic unlinkable due to an unresolved symbol.
The solution in this commit is to export makeSystem and makeFinder
from libjvm.so rather than build redundant versions of finder.cpp and
posix.cpp/windows.cpp into avian-dynamic like we've been doing. This
avoids the whole problem of vmJump reachability and reduces the size
of avian-dynamic at the same time.
This commit also turns off LTO for the avian-dynamic link since we get
odd undefined symbol errors about libc-defined symbols otherwise.
This may merit future investigation, but avian-dynamic is so small and
simple that there's no need to optimize it anyway.
This avoids the requirement of putting the code image in a
section/segment which is both writable and executable, which is good
for security and avoids trouble with systems like iOS which disallow
such things.
The implementation relies on relative addressing such that the offset
of the desired address is fixed as a compile-time constant relative to
the start of the memory area of interest (e.g. the code image, heap
image, or thunk table). At runtime, the base pointer to the memory
area is retrieved from the thread structure and added to the offset to
compute the final address. Using the thread pointer allows us to
generate read-only, position-independent code while avoiding the use
of IP-relative addressing, which is not available on all
architectures.
