source: trunk/ccl/lisp-kernel/macros.h @ 557

Last change on this file since 557 was 557, checked in by gb, 15 years ago

PPC64 changes (some of them rather suspect ...). 32-bit kernel may be a
little funky ...

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 2.1 KB
Line 
1/*
2   Copyright (C) 1994-2001 Digitool, Inc
3   This file is part of OpenMCL. 
4
5   OpenMCL is licensed under the terms of the Lisp Lesser GNU Public
6   License , known as the LLGPL and distributed with OpenMCL as the
7   file "LICENSE".  The LLGPL consists of a preamble and the LGPL,
8   which is distributed with OpenMCL as the file "LGPL".  Where these
9   conflict, the preamble takes precedence. 
10
11   OpenMCL is referenced in the preamble as the "LIBRARY."
12
13   The LLGPL is also available online at
14   http://opensource.franz.com/preamble.html
15*/
16
17/* Totally different content than 'macros.s' */
18
19
20
21#ifndef __macros__
22#define __macros__
23
24#define ptr_to_lispobj(p) ((LispObj)((unsigned_of_pointer_size)(p)))
25#define ptr_from_lispobj(o) ((LispObj*)((unsigned_of_pointer_size)(o)))
26#define lisp_reg_p(reg)  ((reg) >= fn)
27
28#define fulltag_of(o)  ((o) & fulltagmask)
29#define tag_of(o) ((o) & tagmask)
30#define untag(o) ((o) & ~fulltagmask)
31
32#define deref(o,n) (*((LispObj*) (ptr_from_lispobj(untag((LispObj)o)))+(n)))
33#define header_of(o) deref(o,0)
34
35#define header_subtag(h) ((h) & subtagmask)
36#define header_element_count(h) ((h) >> num_subtag_bits)
37#define make_header(subtag,element_count) ((subtag)|((element_count)<<num_subtag_bits))
38
39#define unbox_fixnum(x) ((int)(((int)(x))>>fixnum_shift))
40#define box_fixnum(x) ((x)<<fixnum_shift)
41
42#define car(x) (((cons *)(untag(x)))->car)
43#define cdr(x) (((cons *)(untag(x)))->cdr)
44
45/* "sym" is an untagged pointer to a symbol */
46#define BOUNDP(sym)  ((((lispsymbol *)(sym))->vcell) != undefined)
47
48/* Likewise. */
49#define FBOUNDP(sym) ((((lispsymbol *)(sym))->fcell) != nrs_UDF.vcell)
50
51#ifdef PPC64
52#define nodeheader_tag_p(tag) (((tag) & lowtag_mask) == lowtag_nodeheader)
53#else
54#define nodeheader_tag_p(tag) (tag == fulltag_nodeheader)
55#endif
56
57#ifdef PPC64
58#define immheader_tag_p(tag) (((tag) & lowtag_mask) == lowtag_immheader)
59#else
60#define immheader_tag_p(tag) (tag == fulltag_immheader)
61#endif
62
63/* lfuns */
64#define lfun_bits(f) (deref(f,header_element_count(header_of(f))))
65#define named_function_p(f) (!(lfun_bits(f)&(1<<(29+fixnum_shift))))
66#define named_function_name(f) (deref(f,-1+header_element_count(header_of(f))))
67
68#endif
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