Mercurial > hg > xemacs-beta
view src/alloca.s @ 5070:b0f4adffca7d
fix so that CL docstrings (with &key, etc.) handled properly
-------------------- ChangeLog entries follow: --------------------
lisp/ChangeLog addition:
2010-02-23 Ben Wing <ben@xemacs.org>
* autoload.el:
* autoload.el (make-autoload):
* cl-macs.el (cl-function-arglist):
* cl-macs.el (cl-transform-lambda):
Don't add argument list with the tag "Common Lisp lambda list:";
instead add in "standard" form using "arguments:" and omitting the
function name. Add an arg to `cl-function-arglist' to omit the
name and use it in autoload.el instead of just hacking it off.
* help.el:
* help.el (function-arglist):
* help.el (function-documentation-1): New.
Extract out common code to recognize and/or strip the arglist from
documentation into `function-documentation-1'. Use in
`function-arglist' and `function-documentation'. Modify
`function-arglist' so it looks for the `arguments: ' stuff in all
doc strings, not just subrs/autoloads, so that CL functions get
recognized properly. Change the regexp used to match "arguments: "
specs to allow nested parens inside the arg list (happens when you
have a default value specified in a CL arglist).
| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Tue, 23 Feb 2010 01:12:13 -0600 |
| parents | aa5ed11f473b |
| children | 308d34e9f07d |
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/* `alloca' standard 4.2 subroutine for 68000's and 16000's and others. Copyright (C) 1985, 1986, 1988 Free Software Foundation, Inc. This file is part of XEmacs. XEmacs 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 2, or (at your option) any later version. XEmacs 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 XEmacs; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Synched up with: FSF 19.30. */ /* Both 68000 systems I have run this on have had broken versions of alloca. Also, I am told that non-berkeley systems do not have it at all. So replace whatever system-provided alloca there may be on all 68000 systems. */ #define NOT_C_CODE #ifdef emacs #include <config.h> #else #include "config.h" #endif #ifndef HAVE_ALLOCA /* define this to use system's alloca */ #ifndef m68k #ifndef m68000 you lose!! #endif /* m68000 */ #endif /* m68k */ #ifdef m68k /* SGS assembler totally different */ file "alloca.s" global alloca alloca: mov.l (%sp)+,%a1 # pop return addr from top of stack mov.l (%sp)+,%d0 # pop size in bytes from top of stack add.l &R%1,%d0 # round size up to long word and.l &-4,%d0 # mask out lower two bits of size sub.l %d0,%sp # allocate by moving stack pointer tst.b P%1(%sp) # stack probe to allocate pages mov.l %sp,%a0 # return pointer as pointer mov.l %sp,%d0 # return pointer as int to avoid disaster add.l &-4,%sp # new top of stack jmp (%a1) # not a normal return set S%1,64 # safety factor for C compiler scratch set R%1,3+S%1 # add to size for rounding set P%1,-132 # probe this far below current top of stack #else /* not m68k */ #ifdef m68000 /* Some systems want the _, some do not. Win with both kinds. */ .globl _alloca _alloca: .globl alloca alloca: movl sp@+,a0 movl a7,d0 subl sp@,d0 andl #~3,d0 movl d0,sp tstb sp@(0) /* Make stack pages exist */ /* Needed on certain systems that lack true demand paging */ addql #4,d0 jmp a0@ #endif /* m68000 */ #endif /* not m68k */ #endif /* not HAVE_ALLOCA */