[RFC PATCH] gas: correct .bss documentation for non-ELF

[Jan Beulich]

Only ELF permits the specification of a subsection.
---
Except for H8 this doesn't look to have any effect, because all.texi
blindly enables various object formats. Yet still the documentation ends
up wrong for non-ELF targets.

--- a/gas/doc/as.texi
+++ b/gas/doc/as.texi
@@ -4456,7 +4456,12 @@ Some machine configurations provide addi
 * Asciz::                       @code{.asciz "@var{string}"}@dots{}
 * Attach_to_group::             @code{.attach_to_group @var{name}}
 * Balign::                      @code{.balign [@var{abs-expr}[, @var{abs-expr}]]}
+@ifset ELF
 * Bss::                         @code{.bss @var{subsection}}
+@end ifset
+@ifclear ELF
+* Bss::                         @code{.bss}
+@end ifclear
 * Bundle directives::           @code{.bundle_align_mode @var{abs-expr}}, etc
 * Byte::                        @code{.byte @var{expressions}}
 * CFI directives::		@code{.cfi_startproc [simple]}, @code{.cfi_endproc}, etc.
@@ -4801,8 +4806,14 @@ filled in with the value 0x368d (the exa
 the endianness of the processor).  If it skips 1 or 3 bytes, the fill value is
 undefined.
 
+@ifset ELF
 @node Bss
 @section @code{.bss @var{subsection}}
+@end ifset
+@ifclear ELF
+@node Bss
+@section @code{.bss}
+@end ifclear
 @cindex @code{bss} directive
 
 @code{.bss} tells @command{@value{AS}} to assemble the following statements