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Diffstat (limited to 'ports/sysdeps/tile/dl-runtime.c')
| -rw-r--r-- | ports/sysdeps/tile/dl-runtime.c | 79 |
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) |