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nasm/asm/directiv.dat

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Use a phash to decode directives We can use a perfect hash to decode directives as well. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-07-13 03:04:56 +08:00
;; --------------------------------------------------------------------------
;;
outmacho: support the "subsections_via_symbols" directive The "subsection_via_symbols" directive simply sets a flag in the Mach-O file header. Requested in BR 3392367. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2017-03-08 14:43:00 +08:00
;; Copyright 1996-2017 The NASM Authors - All Rights Reserved
Use a phash to decode directives We can use a perfect hash to decode directives as well. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-07-13 03:04:56 +08:00
;; 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
;; conditions are met:
;;
;; * 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.
;;
;; --------------------------------------------------------------------------
;;
pragma: use the directives hash to look up directive names Very few things have any desire to do its own string parsing, and the directives hash is already a plain string-to-numbers O(1) hash. The namespace is small enough that even if it makes some switch statements compile a bit larger there is no real reason to have separate hashes, even if the actual code as opposed to the data structure was shared. So, for right now, just throw them together in one big happy pot. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-03-09 12:05:41 +08:00
;; List of global NASM directives and pragma operations codes
;;
;; ALL directives, including backend-specific, need to be added here.
;;
;; %pragma operation keywords (the second word, after facility) MAY
;; be added here too to assist in parsing, but it is not required.
;; See the definition of struct pragma in include/nasm.h.
;;
;; The same keyword can be used as a directive and as a pragma
;; operation, or as pragma operations in different namespaces. The
;; same D_ constant will be used for both, and this is perfectly
;; acceptable.
Use a phash to decode directives We can use a perfect hash to decode directives as well. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-07-13 03:04:56 +08:00
;;
Drop unnecessary EXTERN symbols Currently, NASM always issues as an unknown symbol any symbol declared EXTERN. This is highly undesirable when using common header files, as it might cause the linker to pull in a bunch of unnecessary modules, depending on how smart the linker is. Add a new REQUIRED directive which behaves like the old EXTERN, for the use cases which might still need this behavior. Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
2019-09-13 08:21:03 +08:00
;; In the future, this will be turned into a general list of keywords
;; to be parsed in special contexts.
;;
directives: split global directives from backend-specific ones Split out the global directives into a separate section, that allows the switch() in the main code to be slightly faster. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-07-14 02:54:31 +08:00
Add generic perfect string hashes, use for directives Add a generic facility for generating perfect string hashes, where all that is needed is an enum and a string table. The existing mechanism using a custom Perl script wrapped around a module continues to be available for any use case where this particular approach isn't sophisticated enough. Much of this patch comes from renaming "enum directives" to "enum directive" as a result of the string hash generator expecting a set of uniform naming conventions. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-04-03 15:09:58 +08:00
; --- General configuration
#name directive
#prefix D_
#errval D_unknown
#header directiv.h
; --- Special enum values
#special none = 0 ; Must be zero
#special unknown
#special corrupt
directives: split global directives from backend-specific ones Split out the global directives into a separate section, that allows the switch() in the main code to be slightly faster. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-07-14 02:54:31 +08:00
; --- Global directives
Use a phash to decode directives We can use a perfect hash to decode directives as well. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-07-13 03:04:56 +08:00
absolute
bits
common
cpu
debug
default
extern
float
global
Cleanup of label renaming infrastructure, add subsection support In order to support Mach-O better, add support for subsections, as used by Mach-O "subsections_via_symbols". We also want to add infrastructure to support this by downcalling to the backend to indicate if a new subsection is needed. Currently this supports a maximum of 2^14 subsections per section for Mach-O; this can be addressed by adding a level of indirection (or cleaning up the handling of sections so we have an actual data structure.) Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2018-06-02 09:02:54 +08:00
static
Use a phash to decode directives We can use a perfect hash to decode directives as well. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-07-13 03:04:56 +08:00
list
section
segment
warning
Rename SEGALIGN to SECTALIGN "sectalign" is preferred over "segalign" since it operates over section attributes. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
2010-04-21 17:45:32 +08:00
sectalign
preproc: add plumbing for the %pragma directive Plumb the %pragma directive through the preprocessor and make it generate an assembly directive unless given as %pragma preproc. So far no actual pragmas are actually defined. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2016-10-05 05:57:17 +08:00
pragma
Drop unnecessary EXTERN symbols Currently, NASM always issues as an unknown symbol any symbol declared EXTERN. This is highly undesirable when using common header files, as it might cause the linker to pull in a bunch of unnecessary modules, depending on how smart the linker is. Add a new REQUIRED directive which behaves like the old EXTERN, for the use cases which might still need this behavior. Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
2019-09-13 08:21:03 +08:00
required
directives: split global directives from backend-specific ones Split out the global directives into a separate section, that allows the switch() in the main code to be slightly faster. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-07-14 02:54:31 +08:00
; --- Format-specific directives
export ; outcoff, outobj
group ; outobj
import ; outobj
library ; outrdf2
map ; outbin
module ; outrdf2
org ; outbin
osabi ; outelf
safeseh ; outcoff
uppercase ; outieee, outobj
pragma: use the directives hash to look up directive names Very few things have any desire to do its own string parsing, and the directives hash is already a plain string-to-numbers O(1) hash. The namespace is small enough that even if it makes some switch statements compile a bit larger there is no real reason to have separate hashes, even if the actual code as opposed to the data structure was shared. So, for right now, just throw them together in one big happy pot. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-03-09 12:05:41 +08:00
Cleanup of label renaming infrastructure, add subsection support In order to support Mach-O better, add support for subsections, as used by Mach-O "subsections_via_symbols". We also want to add infrastructure to support this by downcalling to the backend to indicate if a new subsection is needed. Currently this supports a maximum of 2^14 subsections per section for Mach-O; this can be addressed by adding a level of indirection (or cleaning up the handling of sections so we have an actual data structure.) Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2018-06-02 09:02:54 +08:00
; --- Assembler pragmas
prefix
suffix
gprefix
gsuffix
lprefix
lsuffix
Make any execution limit configurable, add eval limit Make any "deadman"-style execution limit configurable on the command line (--limit-foo) or via a pragma (%pragma limit foo). Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2018-06-13 04:50:37 +08:00
limit
Cleanup of label renaming infrastructure, add subsection support In order to support Mach-O better, add support for subsections, as used by Mach-O "subsections_via_symbols". We also want to add infrastructure to support this by downcalling to the backend to indicate if a new subsection is needed. Currently this supports a maximum of 2^14 subsections per section for Mach-O; this can be addressed by adding a level of indirection (or cleaning up the handling of sections so we have an actual data structure.) Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2018-06-02 09:02:54 +08:00
Add %pragma list options Add a %pragma to set (or clear) listing options. It only takes effect on the next assembly pass, however! Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2019-08-10 21:45:12 +08:00
; --- Listing pragmas
options
; --- Backend pragmas
macho: implement do_dead_strip, make subsections_by_symbols a pragma Implement the MachO do_dead_strip directive, which sets a flag on the corresponding section. This as well as subsections_by_symbols are reimplemented as pragmas; if someone uses the predefined macro they still get the expected behavior. However, this allows someone to write: %pragma macho subsections_by_symbols ... and have it ignored if compiling for, say, ELF. Also, implement the following section attributes: zerofill, no_dead_strip, live_support, strip_static_syms Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-03-15 09:43:57 +08:00
subsections_via_symbols ; macho
no_dead_strip ; macho
outdbg: add %pragma for maximum size of a raw data dump A raw data dump can potentially be very large, especially when incbin is used. Allow a %pragma for setting the maximum dump size (defaults to 128 bytes.) Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2017-04-01 03:03:57 +08:00
maxdump ; dbg
outobj: emit file dependency information Some OMF toolchain can make use of file dependency information embedded in the object files. As implemented here, we don't try to absolutize the filenames, as that prevents moving around trees and is OS-dependent. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2017-08-17 05:53:18 +08:00
nodepend ; obj
Sanitize the handling of segments a bit Make the internal handling of segment numbers just a little more sane. The whole use of when we have done ofmt->segbase or not is crazy, though... In the meantime, add a few more hacks to the dbg output format to make it more useful. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2017-05-04 08:32:02 +08:00
noseclabels ; dbg
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