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-rw-r--r--libc/sysdeps/linux/x86_64/jmpbuf-unwind.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/x86_64/jmpbuf-unwind.h b/libc/sysdeps/linux/x86_64/jmpbuf-unwind.h
index 885f64f32..152587222 100644
--- a/libc/sysdeps/linux/x86_64/jmpbuf-unwind.h
+++ b/libc/sysdeps/linux/x86_64/jmpbuf-unwind.h
@@ -15,3 +15,14 @@
# define _JMPBUF_UNWINDS(jmpbuf, address) \
((void *) (address) < (void *) (jmpbuf)[JB_SP])
#endif
+
+#ifdef __UCLIBC_HAS_THREADS_NATIVE__
+#include <stdint.h>
+#include <unwind.h>
+
+#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
+ _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)
+
+#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
+ ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[JB_RSP] - (_adj))
+#endif