Merge glibc-ports into ports/ directory.glibc-2.16.90glibc-2.16-ports-merge

1 files changed, 79 insertions, 0 deletions

diff --git a/ports/sysdeps/tile/dl-runtime.c b/ports/sysdeps/tile/dl-runtime.c
new file mode 100644
index 0000000000..0aa211db17
--- /dev/null
+++ b/ports/sysdeps/tile/dl-runtime.c
@@ -0,0 +1,79 @@
+/* Copyright (C) 2011 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
+
+   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/>.  */
+
+/* Like x86_64, we pass the index of the relocation and not its offset.
+   In _dl_profile_fixup and _dl_call_pltexit we also use the index.
+   Therefore it is wasteful to compute the offset in the trampoline
+   just to reverse the operation immediately afterwards.  */
+#define reloc_offset reloc_arg * sizeof (PLTREL)
+#define reloc_index  reloc_arg
+
+#include <elf/dl-runtime.c>
+
+#include <sys/mman.h>
+#include <arch/sim.h>
+
+/* Support notifying the simulator about new objects. */
+void internal_function
+_dl_arch_map_object (struct link_map *l)
+{
+  int shift;
+
+#define DLPUTC(c) __insn_mtspr(SPR_SIM_CONTROL,                         \
+                               (SIM_CONTROL_DLOPEN                      \
+                                | ((c) << _SIM_CONTROL_OPERATOR_BITS)))
+
+  /* Write the library address in hex. */
+  DLPUTC ('0');
+  DLPUTC ('x');
+  for (shift = (int) sizeof (unsigned long) * 8 - 4; shift >= 0; shift -= 4)
+    DLPUTC ("0123456789abcdef"[(l->l_map_start >> shift) & 0xF]);
+  DLPUTC (':');
+
+  /* Write the library path, including the terminating '\0'. */
+  for (size_t i = 0;; i++)
+    {
+      DLPUTC (l->l_name[i]);
+      if (l->l_name[i] == '\0')
+        break;
+    }
+#undef DLPUTC
+}
+
+/* Support notifying the simulator about removed objects prior to munmap(). */
+void internal_function
+_dl_unmap (struct link_map *l)
+{
+  int shift;
+
+#define DLPUTC(c) __insn_mtspr(SPR_SIM_CONTROL,                         \
+                               (SIM_CONTROL_DLCLOSE                     \
+                                | ((c) << _SIM_CONTROL_OPERATOR_BITS)))
+
+  /* Write the library address in hex. */
+  DLPUTC ('0');
+  DLPUTC ('x');
+  for (shift = (int) sizeof (unsigned long) * 8 - 4; shift >= 0; shift -= 4)
+    DLPUTC ("0123456789abcdef"[(l->l_map_start >> shift) & 0xF]);
+  DLPUTC ('\0');
+#undef DLPUTC
+
+  __munmap ((void *) l->l_map_start, l->l_map_end - l->l_map_start);
+}
+
+#define DL_UNMAP(map) _dl_unmap (map)