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Diffstat (limited to 'ports/sysdeps/tile/dl-runtime.c')
| -rw-r--r-- | ports/sysdeps/tile/dl-runtime.c | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/ports/sysdeps/tile/dl-runtime.c b/ports/sysdeps/tile/dl-runtime.c deleted file mode 100644 index 3bfb830320..0000000000 --- a/ports/sysdeps/tile/dl-runtime.c +++ /dev/null @@ -1,158 +0,0 @@ -/* Copyright (C) 2011-2014 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> - -/* Like realpath(), but simplified: no dynamic memory use, no lstat(), - no set_errno(), no valid "rpath" on error, etc. This handles some - simple cases where the simulator might not have a valid entry for - a loaded Elf object, in particular dlopen() with a relative path. - For this relatively rare case, one could also imagine using - link_map.l_origin to avoid the getcwd() here, but the simpler code - here seems like a better solution. */ -static char * -dl_realpath (const char *name, char *rpath) -{ - char *dest; - const char *start, *end; - - if (name[0] != '/') - { - if (!__getcwd (rpath, PATH_MAX)) - return NULL; - dest = __rawmemchr (rpath, '\0'); - } - else - { - rpath[0] = '/'; - dest = rpath + 1; - } - - for (start = end = name; *start; start = end) - { - /* Skip sequence of multiple path-separators. */ - while (*start == '/') - ++start; - - /* Find end of path component. */ - for (end = start; *end && *end != '/'; ++end) - /* Nothing. */; - - if (end - start == 0) - break; - else if (end - start == 1 && start[0] == '.') - /* nothing */; - else if (end - start == 2 && start[0] == '.' && start[1] == '.') - { - /* Back up to previous component, ignore if at root already. */ - if (dest > rpath + 1) - while ((--dest)[-1] != '/'); - } - else - { - if (dest[-1] != '/') - *dest++ = '/'; - - if (dest + (end - start) >= rpath + PATH_MAX) - return NULL; - - dest = __mempcpy (dest, start, end - start); - *dest = '\0'; - } - } - if (dest > rpath + 1 && dest[-1] == '/') - --dest; - *dest = '\0'; - - return rpath; -} - -/* Support notifying the simulator about new objects. */ -void internal_function -_dl_after_load (struct link_map *l) -{ - int shift; - char pathbuf[PATH_MAX]; - char *path; - - /* Don't bother if not in the simulator. */ - if (__insn_mfspr (SPR_SIM_CONTROL) == 0) - return; - -#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'. */ - path = dl_realpath (l->l_name, pathbuf) ?: l->l_name; - for (size_t i = 0;; i++) - { - DLPUTC (path[i]); - if (path[i] == '\0') - break; - } -#undef DLPUTC -} - -/* Support notifying the simulator about removed objects prior to munmap(). */ -static void -sim_dlclose (ElfW(Addr) map_start) -{ - int shift; - - /* Don't bother if not in the simulator. */ - if (__insn_mfspr (SPR_SIM_CONTROL) == 0) - return; - -#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"[(map_start >> shift) & 0xF]); - DLPUTC ('\0'); - -#undef DLPUTC -} - -void internal_function -_dl_unmap (struct link_map *l) -{ - sim_dlclose (l->l_map_start); - __munmap ((void *) l->l_map_start, l->l_map_end - l->l_map_start); -} |