Sweden-Number/include/segmem.h

86 lines
2.1 KiB
C

/* $Id: segmem.h,v 1.3 1993/07/04 04:04:21 root Exp root $
*/
/*
* Copyright Robert J. Amstadt, 1993
*/
#ifndef SEGMEM_H
#define SEGMEM_H
#include "wine.h"
#ifdef __linux__
#define HAVE_IPC
#include <sys/ipc.h>
#include <sys/shm.h>
#endif
#if defined(__NetBSD__) || defined(__FreeBSD__)
#define HAVE_IPC
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#define SHMSEG 32 /* XXX SEMMNI /usr/src/sys/conf/param.h */
#define SHM_RANGE_START 0x40000000
#endif
/*
* Array to track selector allocation.
*/
#define MAX_SELECTORS 512
#define SELECTOR_ISFREE 0x8000
#define SELECTOR_INDEXMASK 0x0fff
extern unsigned short SelectorMap[MAX_SELECTORS];
#ifdef HAVE_IPC
#define SAFEMAKEPTR(s, o) ((void *)(((int) (s) << 16) | ((o) & 0xffff)))
#define FIXPTR(p) (p)
#else
#define SAFEMAKEPTR(s, o) \
((void *)(((int)SelectorMap[SelectorMap[(s) >> 3] & SELECTOR_INDEXMASK] \
<< 19) | 0x70000 | ((o) & 0xffff)))
#define FIXPTR(p) SAFEMAKEPTR((unsigned long) (p) >> 16, (p))
#endif
/*
* Structure to hold info about each selector we create.
*/
typedef struct segment_descriptor_s
{
void *base_addr; /* Pointer to segment in flat memory */
unsigned int length; /* Length of segment */
unsigned int flags; /* Segment flags (see neexe.h and below)*/
unsigned short selector; /* Selector used to access this segment */
unsigned short owner; /* Handle of owner program */
unsigned char type; /* DATA or CODE */
#ifdef HAVE_IPC
key_t shm_key; /* Shared memory key or -1 */
#endif
} SEGDESC;
extern int IPCCopySelector(int i_old, unsigned long new, int swap_type);
/*
* Additional flags
*/
#define NE_SEGFLAGS_MALLOCED 0x00010000 /* Memory allocated with malloc() */
/*
* Global memory flags
*/
#define GLOBAL_FLAGS_MOVEABLE 0x0002
#define GLOBAL_FLAGS_ZEROINIT 0x0040
#define GLOBAL_FLAGS_CODE 0x00010000
#define GLOBAL_FLAGS_EXECUTEONLY 0x00020000
#define GLOBAL_FLAGS_READONLY 0x00020000
#define FIRST_SELECTOR 8
#define IS_16_BIT_ADDRESS(addr) \
((unsigned int)(addr) >= (((FIRST_SELECTOR << 3) | 0x0007) << 16))
extern SEGDESC Segments[];
#endif /* SEGMEM_H */