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xenocara/lib/libXxf86dga/src/XF86DGA2.c

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/*
Copyright (c) 1995 Jon Tombs
Copyright (c) 1995,1996 The XFree86 Project, Inc
*/
/* THIS IS NOT AN X CONSORTIUM STANDARD */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <X11/Xlibint.h>
#include <X11/extensions/Xxf86dga.h>
#include <X11/extensions/xf86dgaproto.h>
#include <X11/extensions/Xext.h>
#include <X11/extensions/extutil.h>
#include <stdio.h>
#include <stdint.h>
#include <limits.h>
/* If you change this, change the Bases[] array below as well */
#define MAX_HEADS 16
const char *xdga_extension_name = XF86DGANAME;
static XExtensionInfo _xdga_info_data;
static XExtensionInfo *xdga_info = &_xdga_info_data;
Bool XDGAMapFramebuffer(int, char *, unsigned char*, CARD32, CARD32, CARD32);
void XDGAUnmapFramebuffer(int);
unsigned char* XDGAGetMappedMemory(int);
#define XDGACheckExtension(dpy,i,val) \
XextCheckExtension (dpy, i, xdga_extension_name, val)
/*****************************************************************************
* *
* private utility routines *
* *
*****************************************************************************/
static int xdga_close_display(Display *dpy, XExtCodes *codes);
static Bool xdga_wire_to_event(Display *dpy, XEvent *event, xEvent *wire_ev);
static Status xdga_event_to_wire(Display *dpy, XEvent *event, xEvent *wire_ev);
static XExtensionHooks xdga_extension_hooks = {
NULL, /* create_gc */
NULL, /* copy_gc */
NULL, /* flush_gc */
NULL, /* free_gc */
NULL, /* create_font */
NULL, /* free_font */
xdga_close_display, /* close_display */
xdga_wire_to_event, /* wire_to_event */
xdga_event_to_wire, /* event_to_wire */
NULL, /* error */
NULL, /* error_string */
};
static XEXT_GENERATE_CLOSE_DISPLAY (xdga_close_display, xdga_info)
XExtDisplayInfo* xdga_find_display(Display*);
XEXT_GENERATE_FIND_DISPLAY (xdga_find_display, xdga_info,
"XFree86-DGA",
&xdga_extension_hooks,
0, NULL)
static Status
xdga_event_to_wire(
Display *dpy,
XEvent *event,
xEvent *wire_ev
){
return True;
}
static Bool
xdga_wire_to_event(
Display *dpy,
XEvent *event,
xEvent *wire_ev
){
dgaEvent *wire = (dgaEvent *) wire_ev;
XDGAButtonEvent *bevent;
XDGAKeyEvent *kevent;
XDGAMotionEvent *mevent;
XExtDisplayInfo *info = xdga_find_display (dpy);
XDGACheckExtension (dpy, info, False);
switch((wire->u.u.type & 0x7f) - info->codes->first_event) {
case MotionNotify:
mevent = (XDGAMotionEvent*)event;
mevent->type = wire->u.u.type & 0x7F;
mevent->serial = _XSetLastRequestRead(dpy, (xGenericReply *)wire);
mevent->display = dpy;
mevent->screen = wire->u.event.screen;
mevent->time = wire->u.event.time;
mevent->state = wire->u.event.state;
mevent->dx = wire->u.event.dx;
mevent->dy = wire->u.event.dy;
return True;
case ButtonPress:
case ButtonRelease:
bevent = (XDGAButtonEvent*)event;
bevent->type = wire->u.u.type & 0x7F;
bevent->serial = _XSetLastRequestRead(dpy, (xGenericReply *)wire);
bevent->display = dpy;
bevent->screen = wire->u.event.screen;
bevent->time = wire->u.event.time;
bevent->state = wire->u.event.state;
bevent->button = wire->u.u.detail;
return True;
case KeyPress:
case KeyRelease:
kevent = (XDGAKeyEvent*)event;
kevent->type = wire->u.u.type & 0x7F;
kevent->serial = _XSetLastRequestRead(dpy, (xGenericReply *)wire);
kevent->display = dpy;
kevent->screen = wire->u.event.screen;
kevent->time = wire->u.event.time;
kevent->state = wire->u.event.state;
kevent->keycode = wire->u.u.detail;
return True;
}
return False;
}
Bool XDGAQueryExtension (
Display *dpy,
int *event_basep,
int *error_basep
){
XExtDisplayInfo *info = xdga_find_display (dpy);
if (XextHasExtension(info)) {
*event_basep = info->codes->first_event;
*error_basep = info->codes->first_error;
return True;
} else {
return False;
}
}
Bool XDGAQueryVersion(
Display *dpy,
int *majorVersion,
int *minorVersion
){
XExtDisplayInfo *info = xdga_find_display (dpy);
xXDGAQueryVersionReply rep;
xXDGAQueryVersionReq *req;
XDGACheckExtension (dpy, info, False);
LockDisplay(dpy);
GetReq(XDGAQueryVersion, req);
req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGAQueryVersion;
if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
UnlockDisplay(dpy);
SyncHandle();
return False;
}
*majorVersion = rep.majorVersion;
*minorVersion = rep.minorVersion;
UnlockDisplay(dpy);
SyncHandle();
if (*majorVersion >= 2)
{
int i, j;
for (i = 0, j = info->codes->first_event;
i < XF86DGANumberEvents;
i++, j++)
{
XESetWireToEvent (dpy, j, xdga_wire_to_event);
XESetEventToWire (dpy, j, xdga_event_to_wire);
}
XDGASetClientVersion(dpy);
}
return True;
}
Bool XDGASetClientVersion(
Display *dpy
){
XExtDisplayInfo *info = xdga_find_display (dpy);
xXDGASetClientVersionReq *req;
XDGACheckExtension (dpy, info, False);
LockDisplay(dpy);
GetReq(XDGASetClientVersion, req);
req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGASetClientVersion;
req->major = XDGA_MAJOR_VERSION;
req->minor = XDGA_MINOR_VERSION;
UnlockDisplay(dpy);
SyncHandle();
return True;
}
Bool XDGAOpenFramebuffer(
Display *dpy,
int screen
){
XExtDisplayInfo *info = xdga_find_display (dpy);
xXDGAOpenFramebufferReply rep;
xXDGAOpenFramebufferReq *req;
char *deviceName = NULL;
Bool ret;
XDGACheckExtension (dpy, info, False);
LockDisplay(dpy);
GetReq(XDGAOpenFramebuffer, req);
req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGAOpenFramebuffer;
req->screen = screen;
if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
UnlockDisplay(dpy);
SyncHandle();
return False;
}
if (rep.length) {
if (rep.length < (INT_MAX >> 2)) {
unsigned long size = rep.length << 2;
deviceName = Xmalloc(size);
_XRead(dpy, deviceName, size);
deviceName[size - 1] = '\0';
} else
_XEatDataWords(dpy, rep.length);
}
ret = XDGAMapFramebuffer(screen, deviceName,
(unsigned char*)(long)rep.mem1,
rep.size, rep.offset, rep.extra);
if(deviceName)
Xfree(deviceName);
UnlockDisplay(dpy);
SyncHandle();
return ret;
}
void XDGACloseFramebuffer(
Display *dpy,
int screen
){
XExtDisplayInfo *info = xdga_find_display (dpy);
xXDGACloseFramebufferReq *req;
XextSimpleCheckExtension (dpy, info, xdga_extension_name);
XDGAUnmapFramebuffer(screen);
LockDisplay(dpy);
GetReq(XDGACloseFramebuffer, req);
req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGACloseFramebuffer;
req->screen = screen;
UnlockDisplay(dpy);
SyncHandle();
}
XDGAMode* XDGAQueryModes(
Display *dpy,
int screen,
int *num
){
XExtDisplayInfo *dinfo = xdga_find_display (dpy);
xXDGAQueryModesReply rep;
xXDGAQueryModesReq *req;
XDGAMode *modes = NULL;
*num = 0;
XDGACheckExtension (dpy, dinfo, NULL);
LockDisplay(dpy);
GetReq(XDGAQueryModes, req);
req->reqType = dinfo->codes->major_opcode;
req->dgaReqType = X_XDGAQueryModes;
req->screen = screen;
if (_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
if(rep.length) {
xXDGAModeInfo info;
unsigned long size = 0;
char *offset;
if ((rep.length < (INT_MAX >> 2)) &&
(rep.number < (INT_MAX / sizeof(XDGAMode)))) {
size = rep.length << 2;
if (size > (rep.number * sz_xXDGAModeInfo)) {
size -= rep.number * sz_xXDGAModeInfo; /* find text size */
modes = Xmalloc((rep.number * sizeof(XDGAMode)) + size);
offset = (char*)(&modes[rep.number]); /* start of text */
}
}
if (modes != NULL) {
unsigned int i;
for(i = 0; i < rep.number; i++) {
_XRead(dpy, (char*)(&info), sz_xXDGAModeInfo);
modes[i].num = info.num;
modes[i].verticalRefresh =
(float)info.vsync_num / (float)info.vsync_den;
modes[i].flags = info.flags;
modes[i].imageWidth = info.image_width;
modes[i].imageHeight = info.image_height;
modes[i].pixmapWidth = info.pixmap_width;
modes[i].pixmapHeight = info.pixmap_height;
modes[i].bytesPerScanline = info.bytes_per_scanline;
modes[i].byteOrder = info.byte_order;
modes[i].depth = info.depth;
modes[i].bitsPerPixel = info.bpp;
modes[i].redMask = info.red_mask;
modes[i].greenMask = info.green_mask;
modes[i].blueMask = info.blue_mask;
modes[i].visualClass = info.visual_class;
modes[i].viewportWidth = info.viewport_width;
modes[i].viewportHeight = info.viewport_height;
modes[i].xViewportStep = info.viewport_xstep;
modes[i].yViewportStep = info.viewport_ystep;
modes[i].maxViewportX = info.viewport_xmax;
modes[i].maxViewportY = info.viewport_ymax;
modes[i].viewportFlags = info.viewport_flags;
modes[i].reserved1 = info.reserved1;
modes[i].reserved2 = info.reserved2;
if (info.name_size > 0 && info.name_size <= size) {
_XRead(dpy, offset, info.name_size);
modes[i].name = offset;
modes[i].name[info.name_size - 1] = '\0';
offset += info.name_size;
size -= info.name_size;
} else {
_XEatData(dpy, info.name_size);
modes[i].name = NULL;
}
}
*num = rep.number;
} else
_XEatDataWords(dpy, rep.length);
}
}
UnlockDisplay(dpy);
SyncHandle();
return modes;
}
XDGADevice *
XDGASetMode(
Display *dpy,
int screen,
int mode
){
XExtDisplayInfo *dinfo = xdga_find_display (dpy);
xXDGASetModeReply rep;
xXDGASetModeReq *req;
XDGADevice *dev = NULL;
Pixmap pid;
XDGACheckExtension (dpy, dinfo, NULL);
LockDisplay(dpy);
GetReq(XDGASetMode, req);
req->reqType = dinfo->codes->major_opcode;
req->dgaReqType = X_XDGASetMode;
req->screen = screen;
req->mode = mode;
req->pid = pid = XAllocID(dpy);
if (_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
if(rep.length) {
xXDGAModeInfo info;
unsigned long size;
if ((rep.length < (INT_MAX >> 2)) &&
(rep.length > (sz_xXDGAModeInfo >> 2))) {
size = rep.length << 2;
size -= sz_xXDGAModeInfo; /* get text size */
dev = Xmalloc(sizeof(XDGADevice) + size);
}
if(dev) {
_XRead(dpy, (char*)(&info), sz_xXDGAModeInfo);
dev->mode.num = info.num;
dev->mode.verticalRefresh =
(float)info.vsync_num / (float)info.vsync_den;
dev->mode.flags = info.flags;
dev->mode.imageWidth = info.image_width;
dev->mode.imageHeight = info.image_height;
dev->mode.pixmapWidth = info.pixmap_width;
dev->mode.pixmapHeight = info.pixmap_height;
dev->mode.bytesPerScanline = info.bytes_per_scanline;
dev->mode.byteOrder = info.byte_order;
dev->mode.depth = info.depth;
dev->mode.bitsPerPixel = info.bpp;
dev->mode.redMask = info.red_mask;
dev->mode.greenMask = info.green_mask;
dev->mode.blueMask = info.blue_mask;
dev->mode.visualClass = info.visual_class;
dev->mode.viewportWidth = info.viewport_width;
dev->mode.viewportHeight = info.viewport_height;
dev->mode.xViewportStep = info.viewport_xstep;
dev->mode.yViewportStep = info.viewport_ystep;
dev->mode.maxViewportX = info.viewport_xmax;
dev->mode.maxViewportY = info.viewport_ymax;
dev->mode.viewportFlags = info.viewport_flags;
dev->mode.reserved1 = info.reserved1;
dev->mode.reserved2 = info.reserved2;
if (info.name_size > 0 && info.name_size <= size) {
dev->mode.name = (char*)(&dev[1]);
_XRead(dpy, dev->mode.name, info.name_size);
dev->mode.name[info.name_size - 1] = '\0';
} else {
dev->mode.name = NULL;
_XEatDataWords(dpy, rep.length);
}
dev->pixmap = (rep.flags & XDGAPixmap) ? pid : 0;
dev->data = XDGAGetMappedMemory(screen);
if(dev->data)
dev->data += rep.offset;
}
/* not sure what to do if the allocation fails */
else
_XEatDataWords(dpy, rep.length);
}
}
UnlockDisplay(dpy);
SyncHandle();
return dev;
}
void XDGASetViewport(
Display *dpy,
int screen,
int x,
int y,
int flags
){
XExtDisplayInfo *info = xdga_find_display (dpy);
xXDGASetViewportReq *req;
XextSimpleCheckExtension (dpy, info, xdga_extension_name);
LockDisplay(dpy);
GetReq(XDGASetViewport, req);
req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGASetViewport;
req->screen = screen;
req->x = x;
req->y = y;
req->flags = flags;
UnlockDisplay(dpy);
SyncHandle();
}
void XDGAInstallColormap(
Display *dpy,
int screen,
Colormap cmap
){
XExtDisplayInfo *info = xdga_find_display (dpy);
xXDGAInstallColormapReq *req;
XextSimpleCheckExtension (dpy, info, xdga_extension_name);
LockDisplay(dpy);
GetReq(XDGAInstallColormap, req);
req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGAInstallColormap;
req->screen = screen;
req->cmap = cmap;
UnlockDisplay(dpy);
SyncHandle();
}
void XDGASelectInput(
Display *dpy,
int screen,
long mask
){
XExtDisplayInfo *info = xdga_find_display (dpy);
xXDGASelectInputReq *req;
XextSimpleCheckExtension (dpy, info, xdga_extension_name);
LockDisplay(dpy);
GetReq(XDGASelectInput, req);
req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGASelectInput;
req->screen = screen;
req->mask = mask;
UnlockDisplay(dpy);
SyncHandle();
}
void XDGAFillRectangle(
Display *dpy,
int screen,
int x,
int y,
unsigned int width,
unsigned int height,
unsigned long color
){
XExtDisplayInfo *info = xdga_find_display (dpy);
xXDGAFillRectangleReq *req;
XextSimpleCheckExtension (dpy, info, xdga_extension_name);
LockDisplay(dpy);
GetReq(XDGAFillRectangle, req);
req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGAFillRectangle;
req->screen = screen;
req->x = x;
req->y = y;
req->width = width;
req->height = height;
req->color = color;
UnlockDisplay(dpy);
SyncHandle();
}
void XDGACopyArea(
Display *dpy,
int screen,
int srcx,
int srcy,
unsigned int width,
unsigned int height,
int dstx,
int dsty
){
XExtDisplayInfo *info = xdga_find_display (dpy);
xXDGACopyAreaReq *req;
XextSimpleCheckExtension (dpy, info, xdga_extension_name);
LockDisplay(dpy);
GetReq(XDGACopyArea, req);
req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGACopyArea;
req->screen = screen;
req->srcx = srcx;
req->srcy = srcy;
req->width = width;
req->height = height;
req->dstx = dstx;
req->dsty = dsty;
UnlockDisplay(dpy);
SyncHandle();
}
void XDGACopyTransparentArea(
Display *dpy,
int screen,
int srcx,
int srcy,
unsigned int width,
unsigned int height,
int dstx,
int dsty,
unsigned long key
){
XExtDisplayInfo *info = xdga_find_display (dpy);
xXDGACopyTransparentAreaReq *req;
XextSimpleCheckExtension (dpy, info, xdga_extension_name);
LockDisplay(dpy);
GetReq(XDGACopyTransparentArea, req);
req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGACopyTransparentArea;
req->screen = screen;
req->srcx = srcx;
req->srcy = srcy;
req->width = width;
req->height = height;
req->dstx = dstx;
req->dsty = dsty;
req->key = key;
UnlockDisplay(dpy);
SyncHandle();
}
int XDGAGetViewportStatus(
Display *dpy,
int screen
){
XExtDisplayInfo *info = xdga_find_display (dpy);
xXDGAGetViewportStatusReply rep;
xXDGAGetViewportStatusReq *req;
int status = 0;
XDGACheckExtension (dpy, info, 0);
LockDisplay(dpy);
GetReq(XDGAGetViewportStatus, req);
req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGAGetViewportStatus;
req->screen = screen;
if (!_XReply(dpy, (xReply *)&rep, 0, xFalse))
status = rep.status;
UnlockDisplay(dpy);
SyncHandle();
return status;
}
void XDGASync(
Display *dpy,
int screen
){
XExtDisplayInfo *info = xdga_find_display (dpy);
xXDGASyncReply rep;
xXDGASyncReq *req;
XextSimpleCheckExtension (dpy, info, xdga_extension_name);
LockDisplay(dpy);
GetReq(XDGASync, req);
req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGASync;
req->screen = screen;
_XReply(dpy, (xReply *)&rep, 0, xFalse);
UnlockDisplay(dpy);
SyncHandle();
}
void XDGAChangePixmapMode(
Display *dpy,
int screen,
int *x,
int *y,
int mode
){
XExtDisplayInfo *info = xdga_find_display (dpy);
xXDGAChangePixmapModeReq *req;
xXDGAChangePixmapModeReply rep;
XextSimpleCheckExtension (dpy, info, xdga_extension_name);
LockDisplay(dpy);
GetReq(XDGAChangePixmapMode, req);
req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGAChangePixmapMode;
req->screen = screen;
req->x = *x;
req->y = *y;
req->flags = mode;
_XReply(dpy, (xReply *)&rep, 0, xFalse);
*x = rep.x;
*y = rep.y;
UnlockDisplay(dpy);
SyncHandle();
}
Colormap XDGACreateColormap(
Display *dpy,
int screen,
XDGADevice *dev,
int alloc
){
XExtDisplayInfo *info = xdga_find_display (dpy);
xXDGACreateColormapReq *req;
Colormap cid;
XDGACheckExtension (dpy, info, -1);
LockDisplay(dpy);
GetReq(XDGACreateColormap, req);
req->reqType = info->codes->major_opcode;
req->dgaReqType = X_XDGACreateColormap;
req->screen = screen;
req->mode = dev->mode.num;
req->alloc = alloc;
cid = req->id = XAllocID(dpy);
UnlockDisplay(dpy);
SyncHandle();
return cid;
}
void XDGAKeyEventToXKeyEvent(
XDGAKeyEvent* dk,
XKeyEvent* xk
){
xk->type = dk->type;
xk->serial = dk->serial;
xk->send_event = False;
xk->display = dk->display;
xk->window = RootWindow(dk->display, dk->screen);
xk->root = xk->window;
xk->subwindow = None;
xk->time = dk->time;
xk->x = xk->y = xk->x_root = xk->y_root = 0;
xk->state = dk->state;
xk->keycode = dk->keycode;
xk->same_screen = True;
}
#include <X11/Xmd.h>
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/wait.h>
#include <signal.h>
#include <unistd.h>
#if defined(SVR4) && !defined(sun)
#define DEV_MEM "/dev/pmem"
#elif defined(SVR4) && defined(sun)
#define DEV_MEM "/dev/xsvc"
#elif defined(HAS_APERTURE_DRV)
#define DEV_MEM "/dev/xf86"
#else
#define DEV_MEM "/dev/mem"
#endif
typedef struct _DGAMapRec{
unsigned char *physical;
unsigned char *virtual;
CARD32 size;
int fd;
int screen;
struct _DGAMapRec *next;
} DGAMapRec, *DGAMapPtr;
static Bool
DGAMapPhysical(int, const char*, unsigned char*, CARD32, CARD32, CARD32, DGAMapPtr);
static void DGAUnmapPhysical(DGAMapPtr);
static DGAMapPtr _Maps = NULL;
unsigned char*
XDGAGetMappedMemory(int screen)
{
DGAMapPtr pMap = _Maps;
unsigned char *pntr = NULL;
while(pMap != NULL) {
if(pMap->screen == screen) {
pntr = pMap->virtual;
break;
}
pMap = pMap->next;
}
return pntr;
}
Bool
XDGAMapFramebuffer(
int screen,
char *name, /* optional device name */
unsigned char* base, /* physical memory */
CARD32 size, /* size */
CARD32 offset, /* optional offset */
CARD32 extra /* optional extra data */
){
DGAMapPtr pMap = _Maps;
Bool result;
/* is it already mapped ? */
while(pMap != NULL) {
if(pMap->screen == screen)
return True;
pMap = pMap->next;
}
if(extra & XDGANeedRoot) {
/* we should probably check if we have root permissions and
return False here */
}
pMap = (DGAMapPtr)Xmalloc(sizeof(DGAMapRec));
result = DGAMapPhysical(screen, name, base, size, offset, extra, pMap);
if(result) {
pMap->next = _Maps;
_Maps = pMap;
} else
Xfree(pMap);
return result;
}
void
XDGAUnmapFramebuffer(int screen)
{
DGAMapPtr pMap = _Maps;
DGAMapPtr pPrev = NULL;
/* is it already mapped */
while(pMap != NULL) {
if(pMap->screen == screen)
break;
pPrev = pMap;
pMap = pMap->next;
}
if(!pMap)
return;
DGAUnmapPhysical(pMap);
if(!pPrev)
_Maps = pMap->next;
else
pPrev->next = pMap->next;
Xfree(pMap);
}
static Bool
DGAMapPhysical(
int screen,
const char *name, /* optional device name */
unsigned char* base, /* physical memory */
CARD32 size, /* size */
CARD32 offset, /* optional offset */
CARD32 extra, /* optional extra data */
DGAMapPtr pMap
) {
base += offset;
pMap->screen = screen;
pMap->physical = base;
pMap->size = size;
#ifndef MAP_FILE
#define MAP_FILE 0
#endif
if (!name)
name = DEV_MEM;
if ((pMap->fd = open(name, O_RDWR)) < 0)
return False;
pMap->virtual = mmap(NULL, size, PROT_READ | PROT_WRITE,
MAP_FILE | MAP_SHARED, pMap->fd, (off_t)(uintptr_t)base);
if (pMap->virtual == (void *)-1)
return False;
mprotect(pMap->virtual, size, PROT_READ | PROT_WRITE);
return True;
}
static void
DGAUnmapPhysical(DGAMapPtr pMap)
{
if (pMap->virtual && pMap->virtual != (void *)-1) {
mprotect(pMap->virtual,pMap->size, PROT_READ);
munmap(pMap->virtual, pMap->size);
pMap->virtual = 0;
}
if (pMap->fd >= 0) {
close(pMap->fd);
pMap->fd = -1;
}
}
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