[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/libc/glibc/glibc-2.22/elf/dl-error.c b/ap/libc/glibc/glibc-2.22/elf/dl-error.c
new file mode 100644
index 0000000..0fc3fd8
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.22/elf/dl-error.c
@@ -0,0 +1,221 @@
+/* Error handling for runtime dynamic linker.
+ Copyright (C) 1995-2015 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <libintl.h>
+#include <setjmp.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <ldsodefs.h>
+
+/* This structure communicates state between _dl_catch_error and
+ _dl_signal_error. */
+struct catch
+ {
+ const char **objname; /* Object/File name. */
+ const char **errstring; /* Error detail filled in here. */
+ bool *malloced; /* Nonzero if the string is malloced
+ by the libc malloc. */
+ volatile int *errcode; /* Return value of _dl_signal_error. */
+ jmp_buf env; /* longjmp here on error. */
+ };
+
+/* Multiple threads at once can use the `_dl_catch_error' function. The
+ calls can come from `_dl_map_object_deps', `_dlerror_run', or from
+ any of the libc functionality which loads dynamic objects (NSS, iconv).
+ Therefore we have to be prepared to save the state in thread-local
+ memory. The _dl_error_catch_tsd function pointer is reset by the thread
+ library so that it returns the address of a thread-local variable. */
+
+
+/* This message we return as a last resort. We define the string in a
+ variable since we have to avoid freeing it and so have to enable
+ a pointer comparison. See below and in dlfcn/dlerror.c. */
+static const char _dl_out_of_memory[] = "out of memory";
+
+
+/* This points to a function which is called when an continuable error is
+ received. Unlike the handling of `catch' this function may return.
+ The arguments will be the `errstring' and `objname'.
+
+ Since this functionality is not used in normal programs (only in ld.so)
+ we do not care about multi-threaded programs here. We keep this as a
+ global variable. */
+static receiver_fct receiver;
+
+#ifdef _LIBC_REENTRANT
+# define CATCH_HOOK (*(struct catch **) (*GL(dl_error_catch_tsd)) ())
+#else
+static struct catch *catch_hook;
+# define CATCH_HOOK catch_hook
+#endif
+
+void
+internal_function
+_dl_signal_error (int errcode, const char *objname, const char *occation,
+ const char *errstring)
+{
+ struct catch *lcatch;
+
+ if (! errstring)
+ errstring = N_("DYNAMIC LINKER BUG!!!");
+
+ lcatch = CATCH_HOOK;
+ if (objname == NULL)
+ objname = "";
+ if (lcatch != NULL)
+ {
+ /* We are inside _dl_catch_error. Return to it. We have to
+ duplicate the error string since it might be allocated on the
+ stack. The object name is always a string constant. */
+ size_t len_objname = strlen (objname) + 1;
+ size_t len_errstring = strlen (errstring) + 1;
+
+ char *errstring_copy = malloc (len_objname + len_errstring);
+ if (errstring_copy != NULL)
+ {
+ /* Make a copy of the object file name and the error string. */
+ *lcatch->objname = memcpy (__mempcpy (errstring_copy,
+ errstring, len_errstring),
+ objname, len_objname);
+ *lcatch->errstring = errstring_copy;
+
+ /* If the main executable is relocated it means the libc's malloc
+ is used. */
+ bool malloced = true;
+#ifdef SHARED
+ malloced = (GL(dl_ns)[LM_ID_BASE]._ns_loaded != NULL
+ && (GL(dl_ns)[LM_ID_BASE]._ns_loaded->l_relocated != 0));
+#endif
+ *lcatch->malloced = malloced;
+ }
+ else
+ {
+ /* This is better than nothing. */
+ *lcatch->objname = "";
+ *lcatch->errstring = _dl_out_of_memory;
+ *lcatch->malloced = false;
+ }
+
+ *lcatch->errcode = errcode;
+
+ /* We do not restore the signal mask because none was saved. */
+ __longjmp (lcatch->env[0].__jmpbuf, 1);
+ }
+ else
+ {
+ /* Lossage while resolving the program's own symbols is always fatal. */
+ char buffer[1024];
+ _dl_fatal_printf ("%s: %s: %s%s%s%s%s\n",
+ RTLD_PROGNAME,
+ occation ?: N_("error while loading shared libraries"),
+ objname, *objname ? ": " : "",
+ errstring, errcode ? ": " : "",
+ (errcode
+ ? __strerror_r (errcode, buffer, sizeof buffer)
+ : ""));
+ }
+}
+
+
+void
+internal_function
+_dl_signal_cerror (int errcode, const char *objname, const char *occation,
+ const char *errstring)
+{
+ if (__builtin_expect (GLRO(dl_debug_mask)
+ & ~(DL_DEBUG_STATISTICS|DL_DEBUG_PRELINK), 0))
+ _dl_debug_printf ("%s: error: %s: %s (%s)\n", objname, occation,
+ errstring, receiver ? "continued" : "fatal");
+
+ if (receiver)
+ {
+ /* We are inside _dl_receive_error. Call the user supplied
+ handler and resume the work. The receiver will still be
+ installed. */
+ (*receiver) (errcode, objname, errstring);
+ }
+ else
+ _dl_signal_error (errcode, objname, occation, errstring);
+}
+
+
+int
+internal_function
+_dl_catch_error (const char **objname, const char **errstring,
+ bool *mallocedp, void (*operate) (void *), void *args)
+{
+ /* We need not handle `receiver' since setting a `catch' is handled
+ before it. */
+
+ /* Only this needs to be marked volatile, because it is the only local
+ variable that gets changed between the setjmp invocation and the
+ longjmp call. All others are just set here (before setjmp) and read
+ in _dl_signal_error (before longjmp). */
+ volatile int errcode;
+
+ struct catch c;
+ /* Don't use an initializer since we don't need to clear C.env. */
+ c.objname = objname;
+ c.errstring = errstring;
+ c.malloced = mallocedp;
+ c.errcode = &errcode;
+
+ struct catch **const catchp = &CATCH_HOOK;
+ struct catch *const old = *catchp;
+ *catchp = &c;
+
+ /* Do not save the signal mask. */
+ if (__builtin_expect (__sigsetjmp (c.env, 0), 0) == 0)
+ {
+ (*operate) (args);
+ *catchp = old;
+ *objname = NULL;
+ *errstring = NULL;
+ *mallocedp = false;
+ return 0;
+ }
+
+ /* We get here only if we longjmp'd out of OPERATE. _dl_signal_error has
+ already stored values into *OBJNAME, *ERRSTRING, and *MALLOCEDP. */
+ *catchp = old;
+ return errcode;
+}
+
+
+void
+internal_function
+_dl_receive_error (receiver_fct fct, void (*operate) (void *), void *args)
+{
+ struct catch **const catchp = &CATCH_HOOK;
+ struct catch *old_catch;
+ receiver_fct old_receiver;
+
+ old_catch = *catchp;
+ old_receiver = receiver;
+
+ /* Set the new values. */
+ *catchp = NULL;
+ receiver = fct;
+
+ (*operate) (args);
+
+ *catchp = old_catch;
+ receiver = old_receiver;
+}