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-rw-r--r--arch/i386/pthread_arch.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/i386/pthread_arch.h b/arch/i386/pthread_arch.h
index 155b4847..64d75cbc 100644
--- a/arch/i386/pthread_arch.h
+++ b/arch/i386/pthread_arch.h
@@ -4,3 +4,6 @@ static inline struct pthread *__pthread_self()
 	__asm__ ("movl %%gs:0,%0" : "=r" (self) );
 	return self;
 }
+
+#define PC_AT_SYS(c) \
+	(*(uint16_t *)(((ucontext_t *)(c))->uc_mcontext.__gregs[14])==0x80cd)