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81 lines
2.8 KiB
C
81 lines
2.8 KiB
C
/* Copyright (C) 2011 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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/* Like x86_64, we pass the index of the relocation and not its offset.
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In _dl_profile_fixup and _dl_call_pltexit we also use the index.
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Therefore it is wasteful to compute the offset in the trampoline
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just to reverse the operation immediately afterwards. */
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#define reloc_offset reloc_arg * sizeof (PLTREL)
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#define reloc_index reloc_arg
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#include <elf/dl-runtime.c>
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#include <sys/mman.h>
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#include <arch/sim.h>
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/* Support notifying the simulator about new objects. */
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void internal_function
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_dl_arch_map_object (struct link_map *l)
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{
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int shift;
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#define DLPUTC(c) __insn_mtspr(SPR_SIM_CONTROL, \
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(SIM_CONTROL_DLOPEN \
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| ((c) << _SIM_CONTROL_OPERATOR_BITS)))
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/* Write the library address in hex. */
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DLPUTC ('0');
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DLPUTC ('x');
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for (shift = (int) sizeof (unsigned long) * 8 - 4; shift >= 0; shift -= 4)
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DLPUTC ("0123456789abcdef"[(l->l_map_start >> shift) & 0xF]);
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DLPUTC (':');
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/* Write the library path, including the terminating '\0'. */
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for (size_t i = 0;; i++)
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{
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DLPUTC (l->l_name[i]);
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if (l->l_name[i] == '\0')
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break;
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}
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#undef DLPUTC
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}
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/* Support notifying the simulator about removed objects prior to munmap(). */
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void internal_function
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_dl_unmap (struct link_map *l)
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{
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int shift;
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#define DLPUTC(c) __insn_mtspr(SPR_SIM_CONTROL, \
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(SIM_CONTROL_DLCLOSE \
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| ((c) << _SIM_CONTROL_OPERATOR_BITS)))
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/* Write the library address in hex. */
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DLPUTC ('0');
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DLPUTC ('x');
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for (shift = (int) sizeof (unsigned long) * 8 - 4; shift >= 0; shift -= 4)
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DLPUTC ("0123456789abcdef"[(l->l_map_start >> shift) & 0xF]);
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DLPUTC ('\0');
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#undef DLPUTC
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__munmap ((void *) l->l_map_start, l->l_map_end - l->l_map_start);
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}
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#define DL_UNMAP(map) _dl_unmap (map)
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