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/* 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>
/* Emacs takes care of ensuring that these are defined. */
#ifdef max
#undef max
#undef min
#endif
#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;
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_ */
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