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Description: Fix for calls to '__x86.get_pc_thunk'
Author: Stefano Rivera <stefanor@debian.org>
Origin: upstream, https://bitbucket.org/pypy/pypy/commits/cf97314aa80f0121bde5ef23e85e4d5068275d40
--- a/rpython/translator/c/gcc/trackgcroot.py
+++ b/rpython/translator/c/gcc/trackgcroot.py
@@ -926,6 +926,13 @@
assert lineoffset in (1,2)
return [InsnStackAdjust(-4)]
+ if target.startswith('__x86.get_pc_thunk.'):
+ # special case, found on x86-32: these static functions
+ # contain only a simple load of some non-GC pointer to
+ # a specific register (not necessarily EAX)
+ reg = '%e' + target.split('.')[-1]
+ return [InsnSetLocal(reg)]
+
insns = [InsnCall(target, self.currentlineno),
InsnSetLocal(self.EAX)] # the result is there
if self.format in ('mingw32', 'msvc'):
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