[bpt/emacs.git] / src / w32heap.h

/* Heap management routines (including unexec) for GNU Emacs on Windows NT.
   Copyright (C) 1994 Free Software Foundation, Inc.

This file is part of GNU Emacs.

GNU Emacs is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.

   Geoff Voelker (voelker@cs.washington.edu)			     7-29-94
*/

#ifndef NTHEAP_H_
#define NTHEAP_H_

#include <windows.h>

#define ROUND_UP(p, align)   (((DWORD)(p) + (align)-1) & ~((align)-1))
#define ROUND_DOWN(p, align) ((DWORD)(p) & ~((align)-1))

/*
 * Heap related stuff.
 */
#define get_reserved_heap_size()	reserved_heap_size
#define get_committed_heap_size()	(get_data_end () - get_data_start ())
#define get_heap_start()		get_data_start ()
#define get_heap_end()			get_data_end ()
#define get_page_size()			sysinfo_cache.dwPageSize
#define get_allocation_unit()		sysinfo_cache.dwAllocationGranularity
#define get_processor_type()		sysinfo_cache.dwProcessorType
#define get_w32_major_version()  	w32_major_version
#define get_w32_minor_version()  	w32_minor_version

extern unsigned char *get_data_start();
extern unsigned char *get_data_end();
extern unsigned long  reserved_heap_size;
extern SYSTEM_INFO    sysinfo_cache;
extern OSVERSIONINFO  osinfo_cache;
extern BOOL   	      using_dynamic_heap;
extern int    	      w32_major_version;
extern int    	      w32_minor_version;
extern int    	      w32_build_number;

enum {
  OS_WIN95 = 1,
  OS_NT
};

extern int os_subtype;

/* Emulation of Unix sbrk().  */
extern void *sbrk (unsigned long size);

/* Initialize heap structures for sbrk on startup.  */
extern void init_heap ();

/* Round the heap to this size.  */
extern void round_heap (unsigned long size);

/* Cache system info, e.g., the NT page size.  */
extern void cache_system_info (void);

/* ----------------------------------------------------------------- */
/* Useful routines for manipulating memory-mapped files. */

typedef struct file_data {
    char          *name;
    unsigned long  size;
    HANDLE         file;
    HANDLE         file_mapping;
    unsigned char *file_base;
} file_data;

#define OFFSET_TO_RVA(var,section) \
	  (section->VirtualAddress + ((DWORD)(var) - section->PointerToRawData))

#define RVA_TO_OFFSET(var,section) \
	  (section->PointerToRawData + ((DWORD)(var) - section->VirtualAddress))

#define RVA_TO_PTR(var,section,filedata) \
	  ((void *)(RVA_TO_OFFSET(var,section) + (filedata).file_base))

int open_input_file (file_data *p_file, char *name);
int open_output_file (file_data *p_file, char *name, unsigned long size);
void close_file_data (file_data *p_file);

/* Return pointer to section header for named section. */
IMAGE_SECTION_HEADER * find_section (char * name, IMAGE_NT_HEADERS * nt_header);

/* Return pointer to section header for section containing the given
   relative virtual address. */
IMAGE_SECTION_HEADER * rva_to_section (DWORD rva, IMAGE_NT_HEADERS * nt_header);

#endif /* NTHEAP_H_ */

/* arch-tag: 3ba4cbe1-8a09-4a41-8f37-fd31f7426b3c
   (do not change this comment) */
Commit	Line	Data
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>
	28
a5352d98 AI	29	#define ROUND_UP(p, align) (((DWORD)(p) + (align)-1) & ~((align)-1))
	30	#define ROUND_DOWN(p, align) ((DWORD)(p) & ~((align)-1))
	31
95ed0025 RS	32	/*
	33	* Heap related stuff.
	34	*/
f803a6b1	35	#define get_reserved_heap_size() reserved_heap_size
95ed0025 RS	36	#define get_committed_heap_size() (get_data_end () - get_data_start ())
	37	#define get_heap_start() get_data_start ()
	38	#define get_heap_end() get_data_end ()
	39	#define get_page_size() sysinfo_cache.dwPageSize
	40	#define get_allocation_unit() sysinfo_cache.dwAllocationGranularity
	41	#define get_processor_type() sysinfo_cache.dwProcessorType
fbd6baed GV	42	#define get_w32_major_version() w32_major_version
fbd6baed GV	43	#define get_w32_minor_version() w32_minor_version
95ed0025 RS	44
	45	extern unsigned char *get_data_start();
	46	extern unsigned char *get_data_end();
f803a6b1	47	extern unsigned long reserved_heap_size;
95ed0025	48	extern SYSTEM_INFO sysinfo_cache;
354350d5	49	extern OSVERSIONINFO osinfo_cache;
a5352d98	50	extern BOOL using_dynamic_heap;
fbd6baed GV	51	extern int w32_major_version;
fbd6baed GV	52	extern int w32_minor_version;
0ae88b4d	53	extern int w32_build_number;
95ed0025	54
3443b04a GV	55	enum {
	56	OS_WIN95 = 1,
	57	OS_NT
	58	};
	59
	60	extern int os_subtype;
	61
95ed0025 RS	62	/* Emulation of Unix sbrk(). */
	63	extern void *sbrk (unsigned long size);
	64
a5352d98 AI	65	/* Initialize heap structures for sbrk on startup. */
a5352d98 AI	66	extern void init_heap ();
95ed0025 RS	67
	68	/* Round the heap to this size. */
	69	extern void round_heap (unsigned long size);
	70
95ed0025 RS	71	/* Cache system info, e.g., the NT page size. */
	72	extern void cache_system_info (void);
	73
3443b04a GV	74	/* ----------------------------------------------------------------- */
	75	/* Useful routines for manipulating memory-mapped files. */
	76
	77	typedef struct file_data {
	78	char *name;
	79	unsigned long size;
	80	HANDLE file;
	81	HANDLE file_mapping;
	82	unsigned char *file_base;
	83	} file_data;
	84
	85	#define OFFSET_TO_RVA(var,section) \
	86	(section->VirtualAddress + ((DWORD)(var) - section->PointerToRawData))
	87
	88	#define RVA_TO_OFFSET(var,section) \
	89	(section->PointerToRawData + ((DWORD)(var) - section->VirtualAddress))
	90
	91	#define RVA_TO_PTR(var,section,filedata) \
	92	((void *)(RVA_TO_OFFSET(var,section) + (filedata).file_base))
	93
	94	int open_input_file (file_data p_file, char name);
	95	int open_output_file (file_data p_file, char name, unsigned long size);
	96	void close_file_data (file_data *p_file);
	97
3443b04a GV	98	/* Return pointer to section header for named section. */
	99	IMAGE_SECTION_HEADER * find_section (char * name, IMAGE_NT_HEADERS * nt_header);
	100
	101	/* Return pointer to section header for section containing the given
	102	relative virtual address. */
	103	IMAGE_SECTION_HEADER * rva_to_section (DWORD rva, IMAGE_NT_HEADERS * nt_header);
	104
95ed0025	105	#endif /* NTHEAP_H_ */
ab5796a9 MB	106
	107	/* arch-tag: 3ba4cbe1-8a09-4a41-8f37-fd31f7426b3c
	108	(do not change this comment) */