diff --git a/gas/doc/a29k-coff.m4 b/gas/doc/a29k-coff.m4
new file mode 100644
index 00000000000..29ebd342a94
--- /dev/null
+++ b/gas/doc/a29k-coff.m4
@@ -0,0 +1,10 @@
+_divert__(-1)
+_define__(<_AMD29K__>,<1>)
+_define__(<_GENERIC__>,<0>)
+_define__(<_HOST__>,<AMD 29K>)
+_define__(<_MACH_DEP__>,<AMD29K-Dependent>)
+_define__(<_AOUT__>,<0>)
+_define__(<_BOUT__>,<0>)
+_define__(<_COFF__>,<1>)
+_define__(<_ELF__>,<0>)
+_divert__<>
\ No newline at end of file