XEmacs 21.2-b1

[chise/xemacs-chise.git.1] / src / ntheap.h

diff --git a/src/ntheap.h b/src/ntheap.h
new file mode 100644 (file)
index 0000000..8c28ff0
--- /dev/null
+++ b/src/ntheap.h
@@ -0,0 +1,114 @@
+/* Heap management routines (including unexec) for XEmacs on Windows NT.
+   Copyright (C) 1994 Free Software Foundation, Inc.
+
+This file is part of XEmacs.
+
+XEmacs 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.
+
+XEmacs 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 XEmacs; 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 */
+
+/* Adapted for XEmacs by David Hobley <david@spook-le0.cia.com.au> */
+/* Synced with FSF Emacs 19.34.6 by Marc Paquette <marcpa@cam.org> */
+
+#ifndef NTHEAP_H_
+#define NTHEAP_H_
+
+#include <windows.h>
+
+/*
+ * 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_nt_major_version()         nt_major_version
+#define get_nt_minor_version()         nt_minor_version
+
+extern unsigned char *get_data_start();
+extern unsigned char *get_data_end();
+extern unsigned long  data_region_size;
+extern unsigned long  reserved_heap_size;
+extern SYSTEM_INFO    sysinfo_cache;
+extern int           nt_major_version;
+extern int           nt_minor_version;
+
+/* To prevent zero-initialized variables from being placed into the bss
+   section, use non-zero values to represent an uninitialized state.  */
+#define UNINIT_PTR ((void *) 0xF0A0F0A0)
+#define UNINIT_LONG (0xF0A0F0A0L)
+
+enum {
+  OS_WIN95 = 1,
+  OS_NT
+};
+
+extern int os_subtype;
+
+/* Emulation of Unix sbrk().  */
+extern void *sbrk (unsigned long size);
+
+/* Recreate the heap created during dumping.  */
+extern void recreate_heap (char *executable_path);
+
+/* Round the heap to this size.  */
+extern void round_heap (unsigned long size);
+
+/* Load in the dumped .bss section.  */
+extern void read_in_bss (char *name);
+
+/* Map in the dumped heap.  */
+extern void map_in_heap (char *name);
+
+/* Cache system info, e.g., the NT page size.  */
+extern void cache_system_info (void);
+
+/* Round ADDRESS up to be aligned with ALIGN.  */
+extern unsigned char *round_to_next (unsigned char *address, 
+                                    unsigned long align);
+
+/* ----------------------------------------------------------------- */
+/* 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 section containing the given
+   relative virtual address. */
+IMAGE_SECTION_HEADER * rva_to_section (DWORD rva, IMAGE_NT_HEADERS * nt_header);
+
+#endif /* NTHEAP_H_ */