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Diffstat (limited to 'xorg-server/hw/xfree86/loader/loader.c')
-rw-r--r--xorg-server/hw/xfree86/loader/loader.c640
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;
+}