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/* 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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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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#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_nt_major_version() nt_major_version
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#define get_nt_minor_version() nt_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 data_region_size;
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extern unsigned long reserved_heap_size;
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extern SYSTEM_INFO sysinfo_cache;
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extern int nt_major_version;
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extern int nt_minor_version;
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/* To prevent zero-initialized variables from being placed into the bss
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section, use non-zero values to represent an uninitialized state. */
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#define UNINIT_PTR ((void *) 0xF0A0F0A0)
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#define UNINIT_LONG (0xF0A0F0A0L)
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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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/* Recreate the heap created during dumping. */
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extern void recreate_heap (char *executable_path);
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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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/* Load in the dumped .bss section. */
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extern void read_in_bss (char *name);
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/* Map in the dumped heap. */
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extern void map_in_heap (char *name);
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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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/* Round ADDRESS up to be aligned with ALIGN. */
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extern unsigned char *round_to_next (unsigned char *address,
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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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unsigned char *file_base;
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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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unsigned long get_section_size (PIMAGE_SECTION_HEADER p_section);
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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_ */