diff options
Diffstat (limited to 'xorg-server/hw/xfree86/loader/loader.c')
| -rw-r--r-- | xorg-server/hw/xfree86/loader/loader.c | 640 |
1 files changed, 319 insertions, 321 deletions
diff --git a/xorg-server/hw/xfree86/loader/loader.c b/xorg-server/hw/xfree86/loader/loader.c index 6a4c08916..7ea934a89 100644 --- a/xorg-server/hw/xfree86/loader/loader.c +++ b/xorg-server/hw/xfree86/loader/loader.c @@ -1,321 +1,319 @@ -/* - * Copyright 1995-1998 by Metro Link, Inc. - * - * Permission to use, copy, modify, distribute, and sell this software and its - * documentation for any purpose is hereby granted without fee, provided that - * the above copyright notice appear in all copies and that both that - * copyright notice and this permission notice appear in supporting - * documentation, and that the name of Metro Link, Inc. not be used in - * advertising or publicity pertaining to distribution of the software without - * specific, written prior permission. Metro Link, Inc. makes no - * representations about the suitability of this software for any purpose. - * It is provided "as is" without express or implied warranty. - * - * METRO LINK, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, - * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO - * EVENT SHALL METRO LINK, INC. BE LIABLE FOR ANY SPECIAL, INDIRECT OR - * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, - * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER - * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR - * PERFORMANCE OF THIS SOFTWARE. - */ -/* - * Copyright (c) 1997-2003 by The XFree86 Project, Inc. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR - * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, - * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * Except as contained in this notice, the name of the copyright holder(s) - * and author(s) shall not be used in advertising or otherwise to promote - * the sale, use or other dealings in this Software without prior written - * authorization from the copyright holder(s) and author(s). - */ - -#ifdef HAVE_XORG_CONFIG_H -#include <xorg-config.h> -#endif - -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <sys/types.h> -#if defined(UseMMAP) || (defined(linux) && defined(__ia64__)) -#include <sys/mman.h> -#endif -#include <unistd.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <string.h> -#if defined(linux) && \ - (defined(__alpha__) || defined(__powerpc__) || defined(__ia64__) \ - || defined(__amd64__)) -#include <malloc.h> -#endif -#include <stdarg.h> - -#include "os.h" -#include "loader.h" -#include "loaderProcs.h" -#include "xf86.h" -#include "xf86Priv.h" -#include "compiler.h" - -extern void *xorg_symbols[]; - -#define MAX_HANDLE 256 -static int refCount[MAX_HANDLE]; - -static int moduleseq = 0; - -/* Prototypes for static functions. */ -static loaderPtr listHead = NULL; - -static loaderPtr -_LoaderListPush(void) -{ - loaderPtr item = calloc(1, sizeof(struct _loader)); - - item->next = listHead; - listHead = item; - - return item; -} - -static loaderPtr -_LoaderListPop(int handle) -{ - loaderPtr item = listHead; - loaderPtr *bptr = &listHead; /* pointer to previous node */ - - while (item) { - if (item->handle == handle) { - *bptr = item->next; /* remove this from the list */ - return item; - } - bptr = &(item->next); - item = item->next; - } - - return 0; -} - -void -LoaderInit(void) -{ - xf86MsgVerb(X_INFO, 2, "Loader magic: %p\n", (void *)xorg_symbols); - xf86MsgVerb(X_INFO, 2, "Module ABI versions:\n"); - xf86ErrorFVerb(2, "\t%s: %d.%d\n", ABI_CLASS_ANSIC, - GET_ABI_MAJOR(LoaderVersionInfo.ansicVersion), - GET_ABI_MINOR(LoaderVersionInfo.ansicVersion)); - xf86ErrorFVerb(2, "\t%s: %d.%d\n", ABI_CLASS_VIDEODRV, - GET_ABI_MAJOR(LoaderVersionInfo.videodrvVersion), - GET_ABI_MINOR(LoaderVersionInfo.videodrvVersion)); - xf86ErrorFVerb(2, "\t%s : %d.%d\n", ABI_CLASS_XINPUT, - GET_ABI_MAJOR(LoaderVersionInfo.xinputVersion), - GET_ABI_MINOR(LoaderVersionInfo.xinputVersion)); - xf86ErrorFVerb(2, "\t%s : %d.%d\n", ABI_CLASS_EXTENSION, - GET_ABI_MAJOR(LoaderVersionInfo.extensionVersion), - GET_ABI_MINOR(LoaderVersionInfo.extensionVersion)); - -#if defined(__UNIXWARE__) && !defined(__GNUC__) - /* For UnixWare we need to load the C Runtime libraries which are - * normally auto-linked by the compiler. Otherwise we are bound to - * see unresolved symbols when trying to use the type "long long". - * Obviously, this does not apply if the GNU C compiler is used. - */ - { - int errmaj, errmin, wasLoaded; /* place holders */ - char *xcrtpath = DEFAULT_MODULE_PATH "/libcrt.a"; - char *uwcrtpath = "/usr/ccs/lib/libcrt.a"; - char *path; - struct stat st; - - if(stat(xcrtpath, &st) < 0) - path = uwcrtpath; /* fallback: try to get libcrt.a from the uccs */ - else - path = xcrtpath; /* get the libcrt.a we compiled with */ - LoaderOpen (path, "libcrt", 0, &errmaj, &errmin, &wasLoaded); - } -#endif -} - -/* Public Interface to the loader. */ - -int -LoaderOpen(const char *module, const char *cname, int handle, - int *errmaj, int *errmin, int *wasLoaded, int flags) -{ - loaderPtr tmp; - int new_handle; - -#if defined(DEBUG) - ErrorF("LoaderOpen(%s)\n", module); -#endif - - /* Is the module already loaded? */ - if (handle >= 0) { - tmp = listHead; - while (tmp) { -#ifdef DEBUGLIST - ErrorF("strcmp(%x(%s),{%x} %x(%s))\n", module, module, - &(tmp->name), tmp->name, tmp->name); -#endif - if (!strcmp(module, tmp->name)) { - refCount[tmp->handle]++; - if (wasLoaded) - *wasLoaded = 1; - xf86MsgVerb(X_INFO, 2, "Reloading %s\n", module); - return tmp->handle; - } - tmp = tmp->next; - } - } - - /* - * OK, it's a new one. Add it. - */ - xf86Msg(X_INFO, "Loading %s\n", module); - if (wasLoaded) - *wasLoaded = 0; - - /* - * Find a free handle. - */ - new_handle = 1; - while (new_handle < MAX_HANDLE && refCount[new_handle]) - new_handle++; - - if (new_handle == MAX_HANDLE) { - xf86Msg(X_ERROR, "Out of loader space\n"); /* XXX */ - if (errmaj) - *errmaj = LDR_NOSPACE; - if (errmin) - *errmin = LDR_NOSPACE; - return -1; - } - - refCount[new_handle] = 1; - - tmp = _LoaderListPush(); - tmp->name = malloc(strlen(module) + 1); - strcpy(tmp->name, module); - tmp->cname = malloc(strlen(cname) + 1); - strcpy(tmp->cname, cname); - tmp->handle = new_handle; - tmp->module = moduleseq++; - - if ((tmp->private = DLLoadModule(tmp, flags)) == NULL) { - xf86Msg(X_ERROR, "Failed to load %s\n", module); - _LoaderListPop(new_handle); - refCount[new_handle] = 0; - if (errmaj) - *errmaj = LDR_NOLOAD; - if (errmin) - *errmin = LDR_NOLOAD; - return -1; - } - - return new_handle; -} - -int -LoaderHandleOpen(int handle) -{ - if (handle < 0 || handle >= MAX_HANDLE) - return -1; - - if (!refCount[handle]) - return -1; - - refCount[handle]++; - return handle; -} - -void * -LoaderSymbol(const char *sym) -{ - return (DLFindSymbol(sym)); -} - -int -LoaderUnload(int handle) -{ - loaderRec fakeHead; - loaderPtr tmp = &fakeHead; - - if (handle < 0 || handle >= MAX_HANDLE) - return -1; - - /* - * check the reference count, only free it if it goes to zero - */ - if (--refCount[handle]) - return 0; - /* - * find the loaderRecs associated with this handle. - */ - - while ((tmp = _LoaderListPop(handle)) != NULL) { - xf86Msg(X_INFO, "Unloading %s\n", tmp->name); - DLUnloadModule(tmp->private); - free(tmp->name); - free(tmp->cname); - free(tmp); - } - - return 0; -} - -unsigned long LoaderOptions = 0; - -void -LoaderSetOptions(unsigned long opts) -{ - LoaderOptions |= opts; -} - -Bool -LoaderShouldIgnoreABI(void) -{ - return (LoaderOptions & LDR_OPT_ABI_MISMATCH_NONFATAL) != 0; -} - -int -LoaderGetABIVersion(const char *abiclass) -{ - struct { - const char *name; - int version; - } classes[] = { - { ABI_CLASS_ANSIC, LoaderVersionInfo.ansicVersion }, - { ABI_CLASS_VIDEODRV, LoaderVersionInfo.videodrvVersion }, - { ABI_CLASS_XINPUT, LoaderVersionInfo.xinputVersion }, - { ABI_CLASS_EXTENSION, LoaderVersionInfo.extensionVersion }, - { ABI_CLASS_FONT, LoaderVersionInfo.fontVersion }, - { NULL, 0 } - }; - int i; - - for(i = 0; classes[i].name; i++) { - if(!strcmp(classes[i].name, abiclass)) { - return classes[i].version; - } - } - - return 0; -} +/*
+ * Copyright 1995-1998 by Metro Link, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Metro Link, Inc. not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. Metro Link, Inc. makes no
+ * representations about the suitability of this software for any purpose.
+ * It is provided "as is" without express or implied warranty.
+ *
+ * METRO LINK, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL METRO LINK, INC. BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+/*
+ * Copyright (c) 1997-2003 by The XFree86 Project, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of the copyright holder(s)
+ * and author(s) shall not be used in advertising or otherwise to promote
+ * the sale, use or other dealings in this Software without prior written
+ * authorization from the copyright holder(s) and author(s).
+ */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#if defined(UseMMAP) || (defined(linux) && defined(__ia64__))
+#include <sys/mman.h>
+#endif
+#include <unistd.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <string.h>
+#if defined(linux) && \
+ (defined(__alpha__) || defined(__powerpc__) || defined(__ia64__) \
+ || defined(__amd64__))
+#include <malloc.h>
+#endif
+#include <stdarg.h>
+
+#include "os.h"
+#include "loader.h"
+#include "loaderProcs.h"
+#include "xf86.h"
+#include "xf86Priv.h"
+#include "compiler.h"
+
+extern void *xorg_symbols[];
+
+#define MAX_HANDLE 256
+static int refCount[MAX_HANDLE];
+
+static int moduleseq = 0;
+
+/* Prototypes for static functions. */
+static loaderPtr listHead = NULL;
+
+static loaderPtr
+_LoaderListPush(void)
+{
+ loaderPtr item = calloc(1, sizeof(struct _loader));
+
+ item->next = listHead;
+ listHead = item;
+
+ return item;
+}
+
+static loaderPtr
+_LoaderListPop(int handle)
+{
+ loaderPtr item = listHead;
+ loaderPtr *bptr = &listHead; /* pointer to previous node */
+
+ while (item) {
+ if (item->handle == handle) {
+ *bptr = item->next; /* remove this from the list */
+ return item;
+ }
+ bptr = &(item->next);
+ item = item->next;
+ }
+
+ return 0;
+}
+
+void
+LoaderInit(void)
+{
+ xf86MsgVerb(X_INFO, 2, "Loader magic: %p\n", (void *)xorg_symbols);
+ xf86MsgVerb(X_INFO, 2, "Module ABI versions:\n");
+ xf86ErrorFVerb(2, "\t%s: %d.%d\n", ABI_CLASS_ANSIC,
+ GET_ABI_MAJOR(LoaderVersionInfo.ansicVersion),
+ GET_ABI_MINOR(LoaderVersionInfo.ansicVersion));
+ xf86ErrorFVerb(2, "\t%s: %d.%d\n", ABI_CLASS_VIDEODRV,
+ GET_ABI_MAJOR(LoaderVersionInfo.videodrvVersion),
+ GET_ABI_MINOR(LoaderVersionInfo.videodrvVersion));
+ xf86ErrorFVerb(2, "\t%s : %d.%d\n", ABI_CLASS_XINPUT,
+ GET_ABI_MAJOR(LoaderVersionInfo.xinputVersion),
+ GET_ABI_MINOR(LoaderVersionInfo.xinputVersion));
+ xf86ErrorFVerb(2, "\t%s : %d.%d\n", ABI_CLASS_EXTENSION,
+ GET_ABI_MAJOR(LoaderVersionInfo.extensionVersion),
+ GET_ABI_MINOR(LoaderVersionInfo.extensionVersion));
+
+#if defined(__UNIXWARE__) && !defined(__GNUC__)
+ /* For UnixWare we need to load the C Runtime libraries which are
+ * normally auto-linked by the compiler. Otherwise we are bound to
+ * see unresolved symbols when trying to use the type "long long".
+ * Obviously, this does not apply if the GNU C compiler is used.
+ */
+ {
+ int errmaj, errmin, wasLoaded; /* place holders */
+ char *xcrtpath = DEFAULT_MODULE_PATH "/libcrt.a";
+ char *uwcrtpath = "/usr/ccs/lib/libcrt.a";
+ char *path;
+ struct stat st;
+
+ if(stat(xcrtpath, &st) < 0)
+ path = uwcrtpath; /* fallback: try to get libcrt.a from the uccs */
+ else
+ path = xcrtpath; /* get the libcrt.a we compiled with */
+ LoaderOpen (path, "libcrt", 0, &errmaj, &errmin, &wasLoaded);
+ }
+#endif
+}
+
+/* Public Interface to the loader. */
+
+int
+LoaderOpen(const char *module, const char *cname, int handle,
+ int *errmaj, int *errmin, int *wasLoaded, int flags)
+{
+ loaderPtr tmp;
+ int new_handle;
+
+#if defined(DEBUG)
+ ErrorF("LoaderOpen(%s)\n", module);
+#endif
+
+ /* Is the module already loaded? */
+ if (handle >= 0) {
+ tmp = listHead;
+ while (tmp) {
+#ifdef DEBUGLIST
+ ErrorF("strcmp(%x(%s),{%x} %x(%s))\n", module, module,
+ &(tmp->name), tmp->name, tmp->name);
+#endif
+ if (!strcmp(module, tmp->name)) {
+ refCount[tmp->handle]++;
+ if (wasLoaded)
+ *wasLoaded = 1;
+ xf86MsgVerb(X_INFO, 2, "Reloading %s\n", module);
+ return tmp->handle;
+ }
+ tmp = tmp->next;
+ }
+ }
+
+ /*
+ * OK, it's a new one. Add it.
+ */
+ xf86Msg(X_INFO, "Loading %s\n", module);
+ if (wasLoaded)
+ *wasLoaded = 0;
+
+ /*
+ * Find a free handle.
+ */
+ new_handle = 1;
+ while (new_handle < MAX_HANDLE && refCount[new_handle])
+ new_handle++;
+
+ if (new_handle == MAX_HANDLE) {
+ xf86Msg(X_ERROR, "Out of loader space\n"); /* XXX */
+ if (errmaj)
+ *errmaj = LDR_NOSPACE;
+ if (errmin)
+ *errmin = LDR_NOSPACE;
+ return -1;
+ }
+
+ refCount[new_handle] = 1;
+
+ tmp = _LoaderListPush();
+ tmp->name = strdup(module);
+ tmp->cname = strdup(cname);
+ tmp->handle = new_handle;
+ tmp->module = moduleseq++;
+
+ if ((tmp->private = DLLoadModule(tmp, flags)) == NULL) {
+ xf86Msg(X_ERROR, "Failed to load %s\n", module);
+ _LoaderListPop(new_handle);
+ refCount[new_handle] = 0;
+ if (errmaj)
+ *errmaj = LDR_NOLOAD;
+ if (errmin)
+ *errmin = LDR_NOLOAD;
+ return -1;
+ }
+
+ return new_handle;
+}
+
+int
+LoaderHandleOpen(int handle)
+{
+ if (handle < 0 || handle >= MAX_HANDLE)
+ return -1;
+
+ if (!refCount[handle])
+ return -1;
+
+ refCount[handle]++;
+ return handle;
+}
+
+void *
+LoaderSymbol(const char *sym)
+{
+ return (DLFindSymbol(sym));
+}
+
+int
+LoaderUnload(int handle)
+{
+ loaderRec fakeHead;
+ loaderPtr tmp = &fakeHead;
+
+ if (handle < 0 || handle >= MAX_HANDLE)
+ return -1;
+
+ /*
+ * check the reference count, only free it if it goes to zero
+ */
+ if (--refCount[handle])
+ return 0;
+ /*
+ * find the loaderRecs associated with this handle.
+ */
+
+ while ((tmp = _LoaderListPop(handle)) != NULL) {
+ xf86Msg(X_INFO, "Unloading %s\n", tmp->name);
+ DLUnloadModule(tmp->private);
+ free(tmp->name);
+ free(tmp->cname);
+ free(tmp);
+ }
+
+ return 0;
+}
+
+unsigned long LoaderOptions = 0;
+
+void
+LoaderSetOptions(unsigned long opts)
+{
+ LoaderOptions |= opts;
+}
+
+Bool
+LoaderShouldIgnoreABI(void)
+{
+ return (LoaderOptions & LDR_OPT_ABI_MISMATCH_NONFATAL) != 0;
+}
+
+int
+LoaderGetABIVersion(const char *abiclass)
+{
+ struct {
+ const char *name;
+ int version;
+ } classes[] = {
+ { ABI_CLASS_ANSIC, LoaderVersionInfo.ansicVersion },
+ { ABI_CLASS_VIDEODRV, LoaderVersionInfo.videodrvVersion },
+ { ABI_CLASS_XINPUT, LoaderVersionInfo.xinputVersion },
+ { ABI_CLASS_EXTENSION, LoaderVersionInfo.extensionVersion },
+ { ABI_CLASS_FONT, LoaderVersionInfo.fontVersion },
+ { NULL, 0 }
+ };
+ int i;
+
+ for(i = 0; classes[i].name; i++) {
+ if(!strcmp(classes[i].name, abiclass)) {
+ return classes[i].version;
+ }
+ }
+
+ return 0;
+}
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