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Normally for 'performance', nptl uses the _Unwind_ForcedUnwind() function, which is provided by GCC. However, this function depends on libunwind tracking all register state, which neither libunwind itself (which we do not want as a core dependency) or GCC's libunwind support register state on some newer x86 CPUs fully. Thusly, we turn off the unwind-using code and return to using the traditional cleanup functions.
11 lines
271 B
Diff
11 lines
271 B
Diff
--- uClibc-0.9.33.2.orig/Rules.mak
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+++ uClibc-0.9.33.2/Rules.mak
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@@ -707,7 +707,6 @@
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ifeq ($(UCLIBC_HAS_THREADS),y)
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ifeq ($(UCLIBC_HAS_THREADS_NATIVE),y)
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PTNAME := nptl
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- CFLAGS += -DHAVE_FORCED_UNWIND
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else
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ifeq ($(LINUXTHREADS_OLD),y)
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PTNAME := linuxthreads.old
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