Mercurial > hg > xemacs-beta
annotate src/alloca.s @ 5096:e0587c615e8b
Updates to internals.texi
-------------------- ChangeLog entries follow: --------------------
man/ChangeLog addition:
2010-03-04 Ben Wing <ben@xemacs.org>
* internals/internals.texi (Top):
* internals/internals.texi (list-to-texinfo): Removed.
* internals/internals.texi (convert-list-to-texinfo): New.
* internals/internals.texi (table-to-texinfo): Removed.
* internals/internals.texi (convert-table-to-texinfo): New.
Update Lisp functions at top to newest versions.
* internals/internals.texi (A History of Emacs):
* internals/internals.texi (Through Version 18):
* internals/internals.texi (Lucid Emacs):
* internals/internals.texi (XEmacs):
* internals/internals.texi (The XEmacs Split):
* internals/internals.texi (Modules for Other Aspects of the Lisp Interpreter and Object System):
* internals/internals.texi (Introduction to Writing C Code):
* internals/internals.texi (Writing Good Comments):
* internals/internals.texi (Writing Macros):
* internals/internals.texi (Major Textual Changes):
* internals/internals.texi (Great Integral Type Renaming):
* internals/internals.texi (How to Regression-Test):
* internals/internals.texi (Creating a Branch):
* internals/internals.texi (Dynamic Arrays):
* internals/internals.texi (Allocation by Blocks):
* internals/internals.texi (mark_object):
* internals/internals.texi (gc_sweep):
* internals/internals.texi (Byte-Char Position Conversion):
* internals/internals.texi (Searching and Matching):
* internals/internals.texi (Introduction to Multilingual Issues #3):
* internals/internals.texi (Byte Types):
* internals/internals.texi (Different Ways of Seeing Internal Text):
* internals/internals.texi (Buffer Positions):
* internals/internals.texi (Basic internal-format APIs):
* internals/internals.texi (The DFC API):
* internals/internals.texi (General Guidelines for Writing Mule-Aware Code):
* internals/internals.texi (Mule-izing Code):
* internals/internals.texi (Locales):
* internals/internals.texi (More about code pages):
* internals/internals.texi (More about locales):
* internals/internals.texi (Unicode support under Windows):
* internals/internals.texi (The Frame):
* internals/internals.texi (The Non-Client Area):
* internals/internals.texi (The Client Area):
* internals/internals.texi (The Paned Area):
* internals/internals.texi (Text Areas):
* internals/internals.texi (The Displayable Area):
* internals/internals.texi (Event Queues):
* internals/internals.texi (Event Stream Callback Routines):
* internals/internals.texi (Focus Handling):
* internals/internals.texi (Future Work -- Autodetection):
Replace " with ``, '' (not complete, maybe about halfway through).
| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Thu, 04 Mar 2010 07:19:03 -0600 |
| parents | aa5ed11f473b |
| children | 308d34e9f07d |
| rev | line source |
|---|---|
| 428 | 1 /* `alloca' standard 4.2 subroutine for 68000's and 16000's and others. |
| 2 Copyright (C) 1985, 1986, 1988 Free Software Foundation, Inc. | |
| 3 | |
| 4 This file is part of XEmacs. | |
| 5 | |
| 6 XEmacs is free software; you can redistribute it and/or modify it | |
| 7 under the terms of the GNU General Public License as published by the | |
| 8 Free Software Foundation; either version 2, or (at your option) any | |
| 9 later version. | |
| 10 | |
| 11 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 for more details. | |
| 15 | |
| 16 You should have received a copy of the GNU General Public License | |
| 17 along with XEmacs; see the file COPYING. If not, write to | |
| 18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 19 Boston, MA 02111-1307, USA. */ | |
| 20 | |
| 21 /* Synched up with: FSF 19.30. */ | |
| 22 | |
| 23 /* Both 68000 systems I have run this on have had broken versions of alloca. | |
| 24 Also, I am told that non-berkeley systems do not have it at all. | |
| 25 So replace whatever system-provided alloca there may be | |
| 26 on all 68000 systems. */ | |
| 27 | |
| 28 #define NOT_C_CODE | |
| 29 #ifdef emacs | |
| 30 #include <config.h> | |
| 31 #else | |
| 32 #include "config.h" | |
| 33 #endif | |
| 34 | |
| 35 #ifndef HAVE_ALLOCA /* define this to use system's alloca */ | |
| 36 | |
| 37 #ifndef m68k | |
| 38 #ifndef m68000 | |
| 39 you | |
| 40 lose!! | |
| 41 #endif /* m68000 */ | |
| 42 #endif /* m68k */ | |
| 43 | |
| 44 | |
| 45 #ifdef m68k /* SGS assembler totally different */ | |
| 46 file "alloca.s" | |
| 47 global alloca | |
| 48 alloca: | |
| 49 mov.l (%sp)+,%a1 # pop return addr from top of stack | |
| 50 mov.l (%sp)+,%d0 # pop size in bytes from top of stack | |
| 51 add.l &R%1,%d0 # round size up to long word | |
| 52 and.l &-4,%d0 # mask out lower two bits of size | |
| 53 sub.l %d0,%sp # allocate by moving stack pointer | |
| 54 tst.b P%1(%sp) # stack probe to allocate pages | |
| 55 mov.l %sp,%a0 # return pointer as pointer | |
| 56 mov.l %sp,%d0 # return pointer as int to avoid disaster | |
| 57 add.l &-4,%sp # new top of stack | |
| 58 jmp (%a1) # not a normal return | |
| 59 set S%1,64 # safety factor for C compiler scratch | |
| 60 set R%1,3+S%1 # add to size for rounding | |
| 61 set P%1,-132 # probe this far below current top of stack | |
| 62 | |
| 63 #else /* not m68k */ | |
| 64 | |
| 65 #ifdef m68000 | |
| 66 | |
| 67 /* Some systems want the _, some do not. Win with both kinds. */ | |
| 68 .globl _alloca | |
| 69 _alloca: | |
| 70 .globl alloca | |
| 71 alloca: | |
| 72 movl sp@+,a0 | |
| 73 movl a7,d0 | |
| 74 subl sp@,d0 | |
| 75 andl #~3,d0 | |
| 76 movl d0,sp | |
| 77 tstb sp@(0) /* Make stack pages exist */ | |
| 78 /* Needed on certain systems | |
| 79 that lack true demand paging */ | |
| 80 addql #4,d0 | |
| 81 jmp a0@ | |
| 82 | |
| 83 #endif /* m68000 */ | |
| 84 #endif /* not m68k */ | |
| 85 | |
| 86 #endif /* not HAVE_ALLOCA */ |