Author: edelsohn
Branch: ppc-jit-backend
Changeset: r52369:029db81d7490
Date: 2012-02-10 23:56 -0500
http://bitbucket.org/pypy/pypy/changeset/029db81d7490/
Log: Add _release_gil_shadowstack, _reacquire_gil_shadowstack,
_build_release_gil and initiatlize it in setup_once.
diff --git a/pypy/jit/backend/ppc/ppc_assembler.py
b/pypy/jit/backend/ppc/ppc_assembler.py
--- a/pypy/jit/backend/ppc/ppc_assembler.py
+++ b/pypy/jit/backend/ppc/ppc_assembler.py
@@ -383,11 +383,38 @@
gc_ll_descr = self.cpu.gc_ll_descr
gc_ll_descr.initialize()
self._build_propagate_exception_path()
+ #if gc_ll_descr.get_malloc_slowpath_addr is not None:
+ # self._build_malloc_slowpath()
+ if gc_ll_descr.gcrootmap and gc_ll_descr.gcrootmap.is_shadow_stack:
+ self._build_release_gil(gc_ll_descr.gcrootmap)
self.memcpy_addr = self.cpu.cast_ptr_to_int(memcpy_fn)
self.exit_code_adr = self._gen_exit_path()
self._leave_jitted_hook_save_exc =
self._gen_leave_jitted_hook_code(True)
self._leave_jitted_hook = self._gen_leave_jitted_hook_code(False)
+ @staticmethod
+ def _release_gil_shadowstack():
+ before = rffi.aroundstate.before
+ if before:
+ before()
+
+ @staticmethod
+ def _reacquire_gil_shadowstack():
+ after = rffi.aroundstate.after
+ if after:
+ after()
+
+ _NOARG_FUNC = lltype.Ptr(lltype.FuncType([], lltype.Void))
+
+ def _build_release_gil(self, gcrootmap):
+ assert gcrootmap.is_shadow_stack
+ releasegil_func = llhelper(self._NOARG_FUNC,
+ self._release_gil_shadowstack)
+ reacqgil_func = llhelper(self._NOARG_FUNC,
+ self._reacquire_gil_shadowstack)
+ self.releasegil_addr = rffi.cast(lltype.Signed, releasegil_func)
+ self.reacqgil_addr = rffi.cast(lltype.Signed, reacqgil_func)
+
def assemble_loop(self, inputargs, operations, looptoken, log):
clt = CompiledLoopToken(self.cpu, looptoken.number)
clt.allgcrefs = []
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