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comparison src/ntheap.h @ 428:3ecd8885ac67 r21-2-22

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Import from CVS: tag r21-2-22
author cvs
date Mon, 13 Aug 2007 11:28:15 +0200
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children 8de8e3f6228a
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427:0a0253eac470 428:3ecd8885ac67
1 /* Heap management routines (including unexec) for XEmacs on Windows NT.
2 Copyright (C) 1994 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 the Free
18 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
19 02111-1307, USA.
20
21 Geoff Voelker (voelker@cs.washington.edu) 7-29-94 */
22
23 /* Adapted for XEmacs by David Hobley <david@spook-le0.cia.com.au> */
24 /* Synced with FSF Emacs 19.34.6 by Marc Paquette <marcpa@cam.org> */
25
26 #ifndef NTHEAP_H_
27 #define NTHEAP_H_
28
29 #include <windows.h>
30
31 /*
32 * Heap related stuff.
33 */
34 #define get_reserved_heap_size() reserved_heap_size
35 #define get_committed_heap_size() (get_data_end () - get_data_start ())
36 #define get_heap_start() get_data_start ()
37 #define get_heap_end() get_data_end ()
38 #define get_page_size() sysinfo_cache.dwPageSize
39 #define get_allocation_unit() sysinfo_cache.dwAllocationGranularity
40 #define get_processor_type() sysinfo_cache.dwProcessorType
41 #define get_nt_major_version() nt_major_version
42 #define get_nt_minor_version() nt_minor_version
43
44 extern unsigned char *get_data_start();
45 extern unsigned char *get_data_end();
46 extern unsigned long data_region_size;
47 extern unsigned long reserved_heap_size;
48 extern SYSTEM_INFO sysinfo_cache;
49 extern int nt_major_version;
50 extern int nt_minor_version;
51
52 /* To prevent zero-initialized variables from being placed into the bss
53 section, use non-zero values to represent an uninitialized state. */
54 #define UNINIT_PTR ((void *) 0xF0A0F0A0)
55 #define UNINIT_LONG (0xF0A0F0A0L)
56
57 enum {
58 OS_WIN95 = 1,
59 OS_NT
60 };
61
62 extern int os_subtype;
63
64 /* Emulation of Unix sbrk(). */
65 extern void *sbrk (unsigned long size);
66
67 /* Recreate the heap created during dumping. */
68 extern void recreate_heap (char *executable_path);
69
70 /* Round the heap to this size. */
71 extern void round_heap (unsigned long size);
72
73 /* Load in the dumped .bss section. */
74 extern void read_in_bss (char *name);
75
76 /* Map in the dumped heap. */
77 extern void map_in_heap (char *name);
78
79 /* Cache system info, e.g., the NT page size. */
80 extern void cache_system_info (void);
81
82 /* Round ADDRESS up to be aligned with ALIGN. */
83 extern unsigned char *round_to_next (unsigned char *address,
84 unsigned long align);
85
86 /* ----------------------------------------------------------------- */
87 /* Useful routines for manipulating memory-mapped files. */
88
89 typedef struct file_data {
90 CONST char *name;
91 unsigned long size;
92 HANDLE file;
93 HANDLE file_mapping;
94 unsigned char *file_base;
95 } file_data;
96
97 #define OFFSET_TO_RVA(var,section) \
98 (section->VirtualAddress + ((DWORD)(var) - section->PointerToRawData))
99
100 #define RVA_TO_OFFSET(var,section) \
101 (section->PointerToRawData + ((DWORD)(var) - section->VirtualAddress))
102
103 #define RVA_TO_PTR(var,section,filedata) \
104 ((void *)(RVA_TO_OFFSET(var,section) + (filedata).file_base))
105
106 int open_input_file (file_data *p_file, CONST char *name);
107 int open_output_file (file_data *p_file, CONST char *name, unsigned long size);
108 void close_file_data (file_data *p_file);
109
110 #endif /* NTHEAP_H_ */