nasm/output/outmacho.mac
H. Peter Anvin d235408c65 preproc: standard macros now C-safe, %aliases off, fix %? recursion
Enough users expect the namespace starting with underscore to be safe
for symbols. Change our private namespace from __foo__ to
__?foo?__. Use %defalias to provide backwards compatiblity (by using
%defalias instead of %define, we handle the case properly where the
user changes the value.)

Add a preprocessor directive:

%aliases off

... to disable all smacro aliases and thereby making the namespace
clean.

Finally, fix infinite recursion when seeing %? or %?? due to
paste_tokens(). If we don't paste anything, the expansion is done.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2019-08-27 16:42:41 -07:00

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;; --------------------------------------------------------------------------
;;
;; Copyright 1996-2017 The NASM Authors - All Rights Reserved
;; See the file AUTHORS included with the NASM distribution for
;; the specific copyright holders.
;;
;; Redistribution and use in source and binary forms, with or without
;; modification, are permitted provided that the following
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;;
;; * Redistributions of source code must retain the above copyright
;; notice, this list of conditions and the following disclaimer.
;; * Redistributions in binary form must reproduce the above
;; copyright notice, this list of conditions and the following
;; disclaimer in the documentation and/or other materials provided
;; with the distribution.
;;
;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
;; CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
;; INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
;; MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
;; DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
;; CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
;; SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
;; NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
;; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
;; HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
;; CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
;; OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
;; EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
;;
;; --------------------------------------------------------------------------
OUT: macho macho32 macho64
%define __?SECT?__ [section .text]
%macro __?NASM_CDecl?__ 1
%endmacro
; This directive sets the MH_SUBSECTIONS_VIA_SYMBOLS header flag
%imacro subsections_via_symbols 0.nolist
%pragma __?OUTPUT_FORMAT?__ %?
%endmacro
%imacro no_dead_strip 1-*.nolist
%rep %0
%pragma __?OUTPUT_FORMAT?__ %? %1
%rotate 1
%endrep
%endmacro