81 lines
4 KiB
C
81 lines
4 KiB
C
|
/* Common macros for target hook definitions.
|
||
|
|
Copyright (C) 2001-2023 Free Software Foundation, Inc.
|
||
|
|
|
||
|
|
This program is free software; you can redistribute it and/or modify it
|
||
|
|
under the terms of the GNU General Public License as published by the
|
||
|
|
Free Software Foundation; either version 3, or (at your option) any
|
||
|
|
later version.
|
||
|
|
|
||
|
|
This program is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
GNU General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU General Public License
|
||
|
|
along with this program; see the file COPYING3. If not see
|
||
|
|
<http://www.gnu.org/licenses/>. */
|
||
|
|
|
||
|
|
/* The following macros should be provided by the including file:
|
||
|
|
|
||
|
|
DEFHOOK(NAME, DOC, TYPE, PARAMS, INIT): Define a function-valued hook.
|
||
|
|
DEFHOOKPOD(NAME, DOC, TYPE, INIT): Define a piece-of-data 'hook'. */
|
||
|
|
|
||
|
|
/* Defaults for optional macros:
|
||
|
|
DEFHOOKPODX(NAME, TYPE, INIT): Like DEFHOOKPOD, but share documentation
|
||
|
|
with the previous 'hook'. */
|
||
|
|
#ifndef DEFHOOKPODX
|
||
|
|
#define DEFHOOKPODX(NAME, TYPE, INIT) DEFHOOKPOD (NAME, 0, TYPE, INIT)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* HOOKSTRUCT(FRAGMENT): Declarator fragments to encapsulate all the
|
||
|
|
members into a struct gcc_target, which in turn contains several
|
||
|
|
sub-structs. */
|
||
|
|
#ifndef HOOKSTRUCT
|
||
|
|
#define HOOKSTRUCT(FRAGMENT)
|
||
|
|
#endif
|
||
|
|
/* HOOK_VECTOR: Start a struct declaration, which then gets its own initializer.
|
||
|
|
HOOK_VECTOR_END: Close a struct declaration, providing a member declarator
|
||
|
|
name for nested use. */
|
||
|
|
#ifndef HOOK_VECTOR_1
|
||
|
|
#define HOOK_VECTOR_1(NAME, FRAGMENT) HOOKSTRUCT (FRAGMENT)
|
||
|
|
#endif
|
||
|
|
#define HOOK_VECTOR(INIT_NAME, SNAME) HOOK_VECTOR_1 (INIT_NAME, struct SNAME {)
|
||
|
|
#define HOOK_VECTOR_END(DECL_NAME) HOOK_VECTOR_1(,} DECL_NAME ;)
|
||
|
|
|
||
|
|
/* FIXME: For pre-existing hooks, we can't place the documentation in the
|
||
|
|
documentation field here till we get permission from the FSF to include
|
||
|
|
it in GPLed software - the target hook documentation is so far only
|
||
|
|
available under the GFDL. */
|
||
|
|
|
||
|
|
/* A hook should generally be documented by a string in the DOC parameter,
|
||
|
|
which should contain texinfo markup. If the documentation is only available
|
||
|
|
under the GPL, but not under the GFDL, put it in a comment above the hook
|
||
|
|
definition. If the function declaration is available both under GPL and
|
||
|
|
GFDL, but the documentation is only available under the GFDL, put the
|
||
|
|
documentaton in tm.texi.in, heading with @hook <hookname> and closing
|
||
|
|
the paragraph with @end deftypefn / deftypevr as appropriate, and marking
|
||
|
|
the next autogenerated hook with @hook <hookname>.
|
||
|
|
In both these cases, leave the DOC string empty, i.e. "".
|
||
|
|
Sometimes, for some historic reason the function declaration
|
||
|
|
has to be documented differently
|
||
|
|
than what it is. In that case, use DEFHOOK_UNDOC to suppress auto-generation
|
||
|
|
of documentation. DEFHOOK_UNDOC takes a DOC string which it ignores, so
|
||
|
|
you can put GPLed documentation string there if you have hopes that you
|
||
|
|
can clear the declaration & documentation for GFDL distribution later,
|
||
|
|
in which case you can then simply change the DEFHOOK_UNDOC to DEFHOOK
|
||
|
|
to turn on the autogeneration of the documentation.
|
||
|
|
|
||
|
|
A documentation string of "*" means not to emit any documentation at all,
|
||
|
|
and is mainly used internally for DEFHOOK_UNDOC. It should generally not
|
||
|
|
be used otherwise, but it has its use for exceptional cases where automatic
|
||
|
|
documentation is not wanted, and the real documentation is elsewere, like
|
||
|
|
for TARGET_ASM_{,UN}ALIGNED_INT_OP, which are hooks only for implementation
|
||
|
|
purposes; they refer to structs, the components of which are documented as
|
||
|
|
separate hooks TARGET_ASM_{,UN}ALIGNED_[HSDT]I_OP.
|
||
|
|
A DOC string of 0 is for internal use of DEFHOOKPODX and special table
|
||
|
|
entries only. */
|
||
|
|
|
||
|
|
/* Empty macro arguments are undefined in C90, so use an empty macro
|
||
|
|
to close top-level hook structures. */
|
||
|
|
#define C90_EMPTY_HACK
|