1 /* Heap management routines (including unexec) for GNU Emacs on Windows NT.
2 Copyright (C) 1994 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; 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.
21 Geoff Voelker (voelker@cs.washington.edu) 7-29-94
32 #define get_reserved_heap_size() reserved_heap_size
33 #define get_committed_heap_size() (get_data_end () - get_data_start ())
34 #define get_heap_start() get_data_start ()
35 #define get_heap_end() get_data_end ()
36 #define get_page_size() sysinfo_cache.dwPageSize
37 #define get_allocation_unit() sysinfo_cache.dwAllocationGranularity
38 #define get_processor_type() sysinfo_cache.dwProcessorType
39 #define get_w32_major_version() w32_major_version
40 #define get_w32_minor_version() w32_minor_version
42 extern unsigned char *get_data_start();
43 extern unsigned char *get_data_end();
44 extern unsigned long data_region_size
;
45 extern unsigned long reserved_heap_size
;
46 extern SYSTEM_INFO sysinfo_cache
;
47 extern BOOL need_to_recreate_heap
;
48 extern int w32_major_version
;
49 extern int w32_minor_version
;
56 extern int os_subtype
;
58 /* Emulation of Unix sbrk(). */
59 extern void *sbrk (unsigned long size
);
61 /* Recreate the heap created during dumping. */
62 extern void recreate_heap (char *executable_path
);
64 /* Round the heap to this size. */
65 extern void round_heap (unsigned long size
);
67 /* Load in the dumped .bss section. */
68 extern void read_in_bss (char *name
);
70 /* Map in the dumped heap. */
71 extern void map_in_heap (char *name
);
73 /* Cache system info, e.g., the NT page size. */
74 extern void cache_system_info (void);
76 /* Round ADDRESS up to be aligned with ALIGN. */
77 extern unsigned char *round_to_next (unsigned char *address
,
80 /* ----------------------------------------------------------------- */
81 /* Useful routines for manipulating memory-mapped files. */
83 typedef struct file_data
{
88 unsigned char *file_base
;
91 #define OFFSET_TO_RVA(var,section) \
92 (section->VirtualAddress + ((DWORD)(var) - section->PointerToRawData))
94 #define RVA_TO_OFFSET(var,section) \
95 (section->PointerToRawData + ((DWORD)(var) - section->VirtualAddress))
97 #define RVA_TO_PTR(var,section,filedata) \
98 ((void *)(RVA_TO_OFFSET(var,section) + (filedata).file_base))
100 int open_input_file (file_data
*p_file
, char *name
);
101 int open_output_file (file_data
*p_file
, char *name
, unsigned long size
);
102 void close_file_data (file_data
*p_file
);
104 unsigned long get_section_size (PIMAGE_SECTION_HEADER p_section
);
106 /* Return pointer to section header for named section. */
107 IMAGE_SECTION_HEADER
* find_section (char * name
, IMAGE_NT_HEADERS
* nt_header
);
109 /* Return pointer to section header for section containing the given
110 relative virtual address. */
111 IMAGE_SECTION_HEADER
* rva_to_section (DWORD rva
, IMAGE_NT_HEADERS
* nt_header
);
113 #endif /* NTHEAP_H_ */