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-rw-r--r--gas/doc/as.texinfo1
-rw-r--r--gas/doc/c-aarch64.texi6
2 files changed, 7 insertions, 0 deletions
diff --git a/gas/doc/as.texinfo b/gas/doc/as.texinfo
index a2771d7b27..de6b5b0213 100644
--- a/gas/doc/as.texinfo
+++ b/gas/doc/as.texinfo
@@ -248,6 +248,7 @@ gcc(1), ld(1), and the Info entries for @file{binutils} and @file{ld}.
@emph{Target AArch64 options:}
[@b{-EB}|@b{-EL}]
+ [@b{-mabi}=@var{ABI}]
@end ifset
@ifset ALPHA
diff --git a/gas/doc/c-aarch64.texi b/gas/doc/c-aarch64.texi
index 3939fee5f0..6019006346 100644
--- a/gas/doc/c-aarch64.texi
+++ b/gas/doc/c-aarch64.texi
@@ -44,6 +44,12 @@ be marked as being encoded for a big-endian processor.
This option specifies that the output generated by the assembler should
be marked as being encoded for a little-endian processor.
+@cindex @code{-mabi=} command line option, AArch64
+@item -mabi=@var{abi}
+Specify which ABI the source code uses. The recognized arguments
+are: @code{ilp32} and @code{lp64}, which decides the generated object
+file in ELF32 and ELF64 format respectively. The default is @code{lp64}.
+
@end table
@c man end