[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-minimal.c b/ap/libc/glibc/glibc-2.22/elf/dl-minimal.c
new file mode 100644
index 0000000..ec7fe88
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.22/elf/dl-minimal.c
@@ -0,0 +1,388 @@
+/* Minimal replacements for basic facilities used in the 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 <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>
+#include <tls.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <sys/param.h>
+#include <sys/types.h>
+#include <ldsodefs.h>
+#include <_itoa.h>
+
+#include <assert.h>
+
+/* Minimal `malloc' allocator for use while loading shared libraries.
+ No block is ever freed. */
+
+static void *alloc_ptr, *alloc_end, *alloc_last_block;
+
+/* Declarations of global functions. */
+extern void weak_function free (void *ptr);
+extern void * weak_function realloc (void *ptr, size_t n);
+extern unsigned long int weak_function __strtoul_internal (const char *nptr,
+ char **endptr,
+ int base,
+ int group);
+extern unsigned long int weak_function strtoul (const char *nptr,
+ char **endptr, int base);
+
+
+/* Allocate an aligned memory block. */
+void * weak_function
+__libc_memalign (size_t align, size_t n)
+{
+ if (alloc_end == 0)
+ {
+ /* Consume any unused space in the last page of our data segment. */
+ extern int _end attribute_hidden;
+ alloc_ptr = &_end;
+ alloc_end = (void *) 0 + (((alloc_ptr - (void *) 0)
+ + GLRO(dl_pagesize) - 1)
+ & ~(GLRO(dl_pagesize) - 1));
+ }
+
+ /* Make sure the allocation pointer is ideally aligned. */
+ alloc_ptr = (void *) 0 + (((alloc_ptr - (void *) 0) + align - 1)
+ & ~(align - 1));
+
+ if (alloc_ptr + n >= alloc_end || n >= -(uintptr_t) alloc_ptr)
+ {
+ /* Insufficient space left; allocate another page. */
+ caddr_t page;
+ size_t nup = (n + GLRO(dl_pagesize) - 1) & ~(GLRO(dl_pagesize) - 1);
+ if (__glibc_unlikely (nup == 0))
+ {
+ if (n)
+ return NULL;
+ nup = GLRO(dl_pagesize);
+ }
+ page = __mmap (0, nup, PROT_READ|PROT_WRITE,
+ MAP_ANON|MAP_PRIVATE, -1, 0);
+ if (page == MAP_FAILED)
+ return NULL;
+ if (page != alloc_end)
+ alloc_ptr = page;
+ alloc_end = page + nup;
+ }
+
+ alloc_last_block = (void *) alloc_ptr;
+ alloc_ptr += n;
+ return alloc_last_block;
+}
+
+void * weak_function
+malloc (size_t n)
+{
+ return __libc_memalign (sizeof (double), n);
+}
+
+/* We use this function occasionally since the real implementation may
+ be optimized when it can assume the memory it returns already is
+ set to NUL. */
+void * weak_function
+calloc (size_t nmemb, size_t size)
+{
+ /* New memory from the trivial malloc above is always already cleared.
+ (We make sure that's true in the rare occasion it might not be,
+ by clearing memory in free, below.) */
+ size_t bytes = nmemb * size;
+
+#define HALF_SIZE_T (((size_t) 1) << (8 * sizeof (size_t) / 2))
+ if (__builtin_expect ((nmemb | size) >= HALF_SIZE_T, 0)
+ && size != 0 && bytes / size != nmemb)
+ return NULL;
+
+ return malloc (bytes);
+}
+
+/* This will rarely be called. */
+void weak_function
+free (void *ptr)
+{
+ /* We can free only the last block allocated. */
+ if (ptr == alloc_last_block)
+ {
+ /* Since this is rare, we clear the freed block here
+ so that calloc can presume malloc returns cleared memory. */
+ memset (alloc_last_block, '\0', alloc_ptr - alloc_last_block);
+ alloc_ptr = alloc_last_block;
+ }
+}
+
+/* This is only called with the most recent block returned by malloc. */
+void * weak_function
+realloc (void *ptr, size_t n)
+{
+ if (ptr == NULL)
+ return malloc (n);
+ assert (ptr == alloc_last_block);
+ size_t old_size = alloc_ptr - alloc_last_block;
+ alloc_ptr = alloc_last_block;
+ void *new = malloc (n);
+ return new != ptr ? memcpy (new, ptr, old_size) : new;
+}
+
+/* Avoid signal frobnication in setjmp/longjmp. Keeps things smaller. */
+
+#include <setjmp.h>
+
+int weak_function
+__sigjmp_save (sigjmp_buf env, int savemask __attribute__ ((unused)))
+{
+ env[0].__mask_was_saved = 0;
+ return 0;
+}
+
+/* Define our own version of the internal function used by strerror. We
+ only provide the messages for some common errors. This avoids pulling
+ in the whole error list. */
+
+char * weak_function
+__strerror_r (int errnum, char *buf, size_t buflen)
+{
+ char *msg;
+
+ switch (errnum)
+ {
+ case ENOMEM:
+ msg = (char *) "Cannot allocate memory";
+ break;
+ case EINVAL:
+ msg = (char *) "Invalid argument";
+ break;
+ case ENOENT:
+ msg = (char *) "No such file or directory";
+ break;
+ case EPERM:
+ msg = (char *) "Operation not permitted";
+ break;
+ case EIO:
+ msg = (char *) "Input/output error";
+ break;
+ case EACCES:
+ msg = (char *) "Permission denied";
+ break;
+ default:
+ /* No need to check buffer size, all calls in the dynamic linker
+ provide enough space. */
+ buf[buflen - 1] = '\0';
+ msg = _itoa (errnum, buf + buflen - 1, 10, 0);
+ msg = memcpy (msg - (sizeof ("Error ") - 1), "Error ",
+ sizeof ("Error ") - 1);
+ break;
+ }
+
+ return msg;
+}
+
+void
+__libc_fatal (const char *message)
+{
+ _dl_fatal_printf ("%s", message);
+}
+rtld_hidden_def (__libc_fatal)
+
+void
+__attribute__ ((noreturn))
+__chk_fail (void)
+{
+ _exit (127);
+}
+rtld_hidden_def (__chk_fail)
+
+#ifndef NDEBUG
+/* Define (weakly) our own assert failure function which doesn't use stdio.
+ If we are linked into the user program (-ldl), the normal __assert_fail
+ defn can override this one. */
+
+void weak_function
+__assert_fail (const char *assertion,
+ const char *file, unsigned int line, const char *function)
+{
+ _dl_fatal_printf ("\
+Inconsistency detected by ld.so: %s: %u: %s%sAssertion `%s' failed!\n",
+ file, line, function ?: "", function ? ": " : "",
+ assertion);
+
+}
+rtld_hidden_weak (__assert_fail)
+
+void weak_function
+__assert_perror_fail (int errnum,
+ const char *file, unsigned int line,
+ const char *function)
+{
+ char errbuf[400];
+ _dl_fatal_printf ("\
+Inconsistency detected by ld.so: %s: %u: %s%sUnexpected error: %s.\n",
+ file, line, function ?: "", function ? ": " : "",
+ __strerror_r (errnum, errbuf, sizeof errbuf));
+
+}
+rtld_hidden_weak (__assert_perror_fail)
+#endif
+
+unsigned long int weak_function
+__strtoul_internal (const char *nptr, char **endptr, int base, int group)
+{
+ unsigned long int result = 0;
+ long int sign = 1;
+ unsigned max_digit;
+
+ while (*nptr == ' ' || *nptr == '\t')
+ ++nptr;
+
+ if (*nptr == '-')
+ {
+ sign = -1;
+ ++nptr;
+ }
+ else if (*nptr == '+')
+ ++nptr;
+
+ if (*nptr < '0' || *nptr > '9')
+ {
+ if (endptr != NULL)
+ *endptr = (char *) nptr;
+ return 0UL;
+ }
+
+ assert (base == 0);
+ base = 10;
+ max_digit = 9;
+ if (*nptr == '0')
+ {
+ if (nptr[1] == 'x' || nptr[1] == 'X')
+ {
+ base = 16;
+ nptr += 2;
+ }
+ else
+ {
+ base = 8;
+ max_digit = 7;
+ }
+ }
+
+ while (1)
+ {
+ unsigned long int digval;
+ if (*nptr >= '0' && *nptr <= '0' + max_digit)
+ digval = *nptr - '0';
+ else if (base == 16)
+ {
+ if (*nptr >= 'a' && *nptr <= 'f')
+ digval = *nptr - 'a' + 10;
+ else if (*nptr >= 'A' && *nptr <= 'F')
+ digval = *nptr - 'A' + 10;
+ else
+ break;
+ }
+ else
+ break;
+
+ if (result > ULONG_MAX / base
+ || (result == ULONG_MAX / base && digval > ULONG_MAX % base))
+ {
+ errno = ERANGE;
+ if (endptr != NULL)
+ *endptr = (char *) nptr;
+ return ULONG_MAX;
+ }
+ result *= base;
+ result += digval;
+ ++nptr;
+ }
+
+ if (endptr != NULL)
+ *endptr = (char *) nptr;
+ return result * sign;
+}
+
+
+#undef _itoa
+/* We always use _itoa instead of _itoa_word in ld.so since the former
+ also has to be present and it is never about speed when these
+ functions are used. */
+char *
+_itoa (value, buflim, base, upper_case)
+ unsigned long long int value;
+ char *buflim;
+ unsigned int base;
+ int upper_case;
+{
+ assert (! upper_case);
+
+ do
+ *--buflim = _itoa_lower_digits[value % base];
+ while ((value /= base) != 0);
+
+ return buflim;
+}
+
+/* The '_itoa_lower_digits' variable in libc.so is able to handle bases
+ up to 36. We don't need this here. */
+const char _itoa_lower_digits[16] = "0123456789abcdef";
+rtld_hidden_data_def (_itoa_lower_digits)
+
+/* The following is not a complete strsep implementation. It cannot
+ handle empty delimiter strings. But this isn't necessary for the
+ execution of ld.so. */
+#undef strsep
+#undef __strsep
+char *
+__strsep (char **stringp, const char *delim)
+{
+ char *begin;
+
+ assert (delim[0] != '\0');
+
+ begin = *stringp;
+ if (begin != NULL)
+ {
+ char *end = begin;
+
+ while (*end != '\0' || (end = NULL))
+ {
+ const char *dp = delim;
+
+ do
+ if (*dp == *end)
+ break;
+ while (*++dp != '\0');
+
+ if (*dp != '\0')
+ {
+ *end++ = '\0';
+ break;
+ }
+
+ ++end;
+ }
+
+ *stringp = end;
+ }
+
+ return begin;
+}
+weak_alias (__strsep, strsep)
+strong_alias (__strsep, __strsep_g)