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95ed0025 RS |
1 | /* Heap management routines (including unexec) for GNU Emacs on Windows NT. |
2 | Copyright (C) 1994 Free Software Foundation, Inc. | |
3 | ||
3b7ad313 EN |
4 | This file is part of GNU Emacs. |
5 | ||
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) | |
9 | any later version. | |
10 | ||
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. | |
15 | ||
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. | |
95ed0025 RS |
20 | |
21 | Geoff Voelker (voelker@cs.washington.edu) 7-29-94 | |
22 | */ | |
23 | ||
24 | #ifndef NTHEAP_H_ | |
25 | #define NTHEAP_H_ | |
26 | ||
27 | #include <windows.h> | |
c86a4064 AI |
28 | /* Emacs takes care of ensuring that these are defined. */ |
29 | #ifdef max | |
30 | #undef max | |
31 | #undef min | |
32 | #endif | |
95ed0025 | 33 | |
a5352d98 AI |
34 | #define ROUND_UP(p, align) (((DWORD)(p) + (align)-1) & ~((align)-1)) |
35 | #define ROUND_DOWN(p, align) ((DWORD)(p) & ~((align)-1)) | |
36 | ||
95ed0025 RS |
37 | /* |
38 | * Heap related stuff. | |
39 | */ | |
f803a6b1 | 40 | #define get_reserved_heap_size() reserved_heap_size |
95ed0025 RS |
41 | #define get_committed_heap_size() (get_data_end () - get_data_start ()) |
42 | #define get_heap_start() get_data_start () | |
43 | #define get_heap_end() get_data_end () | |
44 | #define get_page_size() sysinfo_cache.dwPageSize | |
45 | #define get_allocation_unit() sysinfo_cache.dwAllocationGranularity | |
46 | #define get_processor_type() sysinfo_cache.dwProcessorType | |
fbd6baed GV |
47 | #define get_w32_major_version() w32_major_version |
48 | #define get_w32_minor_version() w32_minor_version | |
95ed0025 RS |
49 | |
50 | extern unsigned char *get_data_start(); | |
51 | extern unsigned char *get_data_end(); | |
f803a6b1 | 52 | extern unsigned long reserved_heap_size; |
95ed0025 | 53 | extern SYSTEM_INFO sysinfo_cache; |
354350d5 | 54 | extern OSVERSIONINFO osinfo_cache; |
a5352d98 | 55 | extern BOOL using_dynamic_heap; |
fbd6baed GV |
56 | extern int w32_major_version; |
57 | extern int w32_minor_version; | |
95ed0025 | 58 | |
3443b04a GV |
59 | enum { |
60 | OS_WIN95 = 1, | |
61 | OS_NT | |
62 | }; | |
63 | ||
64 | extern int os_subtype; | |
65 | ||
95ed0025 RS |
66 | /* Emulation of Unix sbrk(). */ |
67 | extern void *sbrk (unsigned long size); | |
68 | ||
a5352d98 AI |
69 | /* Initialize heap structures for sbrk on startup. */ |
70 | extern void init_heap (); | |
95ed0025 RS |
71 | |
72 | /* Round the heap to this size. */ | |
73 | extern void round_heap (unsigned long size); | |
74 | ||
95ed0025 RS |
75 | /* Cache system info, e.g., the NT page size. */ |
76 | extern void cache_system_info (void); | |
77 | ||
3443b04a GV |
78 | /* ----------------------------------------------------------------- */ |
79 | /* Useful routines for manipulating memory-mapped files. */ | |
80 | ||
81 | typedef struct file_data { | |
82 | char *name; | |
83 | unsigned long size; | |
84 | HANDLE file; | |
85 | HANDLE file_mapping; | |
86 | unsigned char *file_base; | |
87 | } file_data; | |
88 | ||
89 | #define OFFSET_TO_RVA(var,section) \ | |
90 | (section->VirtualAddress + ((DWORD)(var) - section->PointerToRawData)) | |
91 | ||
92 | #define RVA_TO_OFFSET(var,section) \ | |
93 | (section->PointerToRawData + ((DWORD)(var) - section->VirtualAddress)) | |
94 | ||
95 | #define RVA_TO_PTR(var,section,filedata) \ | |
96 | ((void *)(RVA_TO_OFFSET(var,section) + (filedata).file_base)) | |
97 | ||
98 | int open_input_file (file_data *p_file, char *name); | |
99 | int open_output_file (file_data *p_file, char *name, unsigned long size); | |
100 | void close_file_data (file_data *p_file); | |
101 | ||
3443b04a GV |
102 | /* Return pointer to section header for named section. */ |
103 | IMAGE_SECTION_HEADER * find_section (char * name, IMAGE_NT_HEADERS * nt_header); | |
104 | ||
105 | /* Return pointer to section header for section containing the given | |
106 | relative virtual address. */ | |
107 | IMAGE_SECTION_HEADER * rva_to_section (DWORD rva, IMAGE_NT_HEADERS * nt_header); | |
108 | ||
95ed0025 | 109 | #endif /* NTHEAP_H_ */ |