Add ffi_cfi.h

Have one copy of the HAVE_AS_CFI_PSEUDO_OP code
to share between all backends.

diff --git a/include/ffi_cfi.h b/include/ffi_cfi.h
new file mode 100644 (file)
index 0000000..244ce57
--- /dev/null
+++ b/include/ffi_cfi.h
@@ -0,0 +1,55 @@
+/* -----------------------------------------------------------------------
+   ffi_cfi.h - Copyright (c) 2014  Red Hat, Inc.
+
+   Conditionally assemble cfi directives. Only necessary for building libffi.
+   ----------------------------------------------------------------------- */
+
+#ifndef FFI_CFI_H
+#define FFI_CFI_H
+
+#ifdef HAVE_AS_CFI_PSEUDO_OP
+
+# define cfi_startproc                 .cfi_startproc
+# define cfi_endproc                   .cfi_endproc
+# define cfi_def_cfa(reg, off)         .cfi_def_cfa reg, off
+# define cfi_def_cfa_register(reg)     .cfi_def_cfa_register reg
+# define cfi_def_cfa_offset(off)       .cfi_def_cfa_offset off
+# define cfi_adjust_cfa_offset(off)    .cfi_adjust_cfa_offset off
+# define cfi_offset(reg, off)          .cfi_offset reg, off
+# define cfi_rel_offset(reg, off)      .cfi_rel_offset reg, off
+# define cfi_register(r1, r2)          .cfi_register r1, r2
+# define cfi_return_column(reg)                .cfi_return_column reg
+# define cfi_restore(reg)              .cfi_restore reg
+# define cfi_same_value(reg)           .cfi_same_value reg
+# define cfi_undefined(reg)            .cfi_undefined reg
+# define cfi_remember_state            .cfi_remember_state
+# define cfi_restore_state             .cfi_restore_state
+# define cfi_window_save               .cfi_window_save
+# define cfi_personality(enc, exp)     .cfi_personality enc, exp
+# define cfi_lsda(enc, exp)            .cfi_lsda enc, exp
+# define cfi_escape(...)               .cfi_escape __VA_ARGS__
+
+#else
+
+# define cfi_startproc
+# define cfi_endproc
+# define cfi_def_cfa(reg, off)
+# define cfi_def_cfa_register(reg)
+# define cfi_def_cfa_offset(off)
+# define cfi_adjust_cfa_offset(off)
+# define cfi_offset(reg, off)
+# define cfi_rel_offset(reg, off)
+# define cfi_register(r1, r2)
+# define cfi_return_column(reg)
+# define cfi_restore(reg)
+# define cfi_same_value(reg)
+# define cfi_undefined(reg)
+# define cfi_remember_state
+# define cfi_restore_state
+# define cfi_window_save
+# define cfi_personality(enc, exp)
+# define cfi_lsda(enc, exp)
+# define cfi_escape(...)
+
+#endif /* HAVE_AS_CFI_PSEUDO_OP */
+#endif /* FFI_CFI_H */