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105 lines
3.4 KiB
C
105 lines
3.4 KiB
C
/* Heap management routines (including unexec) for GNU Emacs on Windows NT.
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Copyright (C) 1994 Free Software Foundation, Inc.
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This file is part of GNU Emacs.
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GNU Emacs is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Emacs is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Emacs; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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Geoff Voelker (voelker@cs.washington.edu) 7-29-94
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*/
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#ifndef NTHEAP_H_
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#define NTHEAP_H_
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#include <windows.h>
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#define ROUND_UP(p, align) (((DWORD)(p) + (align)-1) & ~((align)-1))
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#define ROUND_DOWN(p, align) ((DWORD)(p) & ~((align)-1))
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/*
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* Heap related stuff.
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*/
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#define get_reserved_heap_size() reserved_heap_size
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#define get_committed_heap_size() (get_data_end () - get_data_start ())
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#define get_heap_start() get_data_start ()
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#define get_heap_end() get_data_end ()
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#define get_page_size() sysinfo_cache.dwPageSize
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#define get_allocation_unit() sysinfo_cache.dwAllocationGranularity
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#define get_processor_type() sysinfo_cache.dwProcessorType
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#define get_w32_major_version() w32_major_version
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#define get_w32_minor_version() w32_minor_version
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extern unsigned char *get_data_start();
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extern unsigned char *get_data_end();
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extern unsigned long reserved_heap_size;
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extern SYSTEM_INFO sysinfo_cache;
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extern OSVERSIONINFO osinfo_cache;
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extern BOOL using_dynamic_heap;
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extern int w32_major_version;
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extern int w32_minor_version;
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extern int w32_build_number;
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enum {
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OS_WIN95 = 1,
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OS_NT
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};
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extern int os_subtype;
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/* Emulation of Unix sbrk(). */
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extern void *sbrk (unsigned long size);
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/* Initialize heap structures for sbrk on startup. */
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extern void init_heap ();
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/* Round the heap to this size. */
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extern void round_heap (unsigned long size);
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/* Cache system info, e.g., the NT page size. */
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extern void cache_system_info (void);
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/* ----------------------------------------------------------------- */
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/* Useful routines for manipulating memory-mapped files. */
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typedef struct file_data {
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char *name;
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unsigned long size;
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HANDLE file;
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HANDLE file_mapping;
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unsigned char *file_base;
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} file_data;
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#define OFFSET_TO_RVA(var,section) \
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(section->VirtualAddress + ((DWORD)(var) - section->PointerToRawData))
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#define RVA_TO_OFFSET(var,section) \
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(section->PointerToRawData + ((DWORD)(var) - section->VirtualAddress))
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#define RVA_TO_PTR(var,section,filedata) \
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((void *)(RVA_TO_OFFSET(var,section) + (filedata).file_base))
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int open_input_file (file_data *p_file, char *name);
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int open_output_file (file_data *p_file, char *name, unsigned long size);
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void close_file_data (file_data *p_file);
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/* Return pointer to section header for named section. */
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IMAGE_SECTION_HEADER * find_section (char * name, IMAGE_NT_HEADERS * nt_header);
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/* Return pointer to section header for section containing the given
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relative virtual address. */
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IMAGE_SECTION_HEADER * rva_to_section (DWORD rva, IMAGE_NT_HEADERS * nt_header);
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#endif /* NTHEAP_H_ */
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