diff options
Diffstat (limited to 'ports')
| -rw-r--r-- | ports/ChangeLog.m68k | 10 | ||||
| -rw-r--r-- | ports/sysdeps/unix/sysv/linux/m68k/Makefile | 5 | ||||
| -rw-r--r-- | ports/sysdeps/unix/sysv/linux/m68k/Versions | 5 | ||||
| -rw-r--r-- | ports/sysdeps/unix/sysv/linux/m68k/dl-static.c | 84 | ||||
| -rw-r--r-- | ports/sysdeps/unix/sysv/linux/m68k/ldsodefs.h | 32 |
5 files changed, 134 insertions, 2 deletions
diff --git a/ports/ChangeLog.m68k b/ports/ChangeLog.m68k index 793dad91fe..2666d38e8c 100644 --- a/ports/ChangeLog.m68k +++ b/ports/ChangeLog.m68k @@ -1,3 +1,13 @@ +2013-07-20 Andreas Schwab <schwab@linux-m68k.org> + + * sysdeps/unix/sysv/linux/m68k/dl-static.c: New file. + * sysdeps/unix/sysv/linux/m68k/ldsodefs.h: New file. + * sysdeps/unix/sysv/linux/m68k/Makefile (sysdep-dl-routines) + (sysdep_routines, sysdep-rtld-routines) [$(subdir) = elf]: Add + dl-static. + * sysdeps/unix/sysv/linux/m68k/Versions (ld: GLIBC_PRIVATE): Add + _dl_var_init. + 2013-07-03 Andreas Schwab <schwab@linux-m68k.org> * sysdeps/m68k/m680x0/fpu/libm-test-ulps: Update. diff --git a/ports/sysdeps/unix/sysv/linux/m68k/Makefile b/ports/sysdeps/unix/sysv/linux/m68k/Makefile index 97d95847ff..de27824a57 100644 --- a/ports/sysdeps/unix/sysv/linux/m68k/Makefile +++ b/ports/sysdeps/unix/sysv/linux/m68k/Makefile @@ -12,8 +12,9 @@ sysdep_headers += sys/reg.h endif ifeq ($(subdir),elf) -sysdep_routines += dl-vdso libc-m68k-vdso -sysdep-rtld-routines += m68k-vdso +sysdep-dl-routines += dl-static +sysdep_routines += dl-vdso libc-m68k-vdso dl-static +sysdep-rtld-routines += m68k-vdso dl-static sysdep-others += lddlibc4 install-bin += lddlibc4 endif diff --git a/ports/sysdeps/unix/sysv/linux/m68k/Versions b/ports/sysdeps/unix/sysv/linux/m68k/Versions index 8a941f8371..7ecc96ea97 100644 --- a/ports/sysdeps/unix/sysv/linux/m68k/Versions +++ b/ports/sysdeps/unix/sysv/linux/m68k/Versions @@ -1,3 +1,8 @@ +ld { + GLIBC_PRIVATE { + _dl_var_init; + } +} libc { GLIBC_2.0 { # Exception handling support functions from libgcc diff --git a/ports/sysdeps/unix/sysv/linux/m68k/dl-static.c b/ports/sysdeps/unix/sysv/linux/m68k/dl-static.c new file mode 100644 index 0000000000..3c99e40a4d --- /dev/null +++ b/ports/sysdeps/unix/sysv/linux/m68k/dl-static.c @@ -0,0 +1,84 @@ +/* Variable initialization. M68K version. + Copyright (C) 2013 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 <ldsodefs.h> + +#ifdef SHARED + +void +_dl_var_init (void *array[]) +{ + /* It has to match "variables" below. */ + enum + { + DL_PAGESIZE = 0, + }; + + GLRO(dl_pagesize) = *(size_t *) array[DL_PAGESIZE]; +} + +#else + +static void *variables[] = +{ + &GLRO(dl_pagesize) +}; + +static void +_dl_unprotect_relro (struct link_map *l) +{ + ElfW(Addr) start = ((l->l_addr + l->l_relro_addr) + & ~(GLRO(dl_pagesize) - 1)); + ElfW(Addr) end = ((l->l_addr + l->l_relro_addr + l->l_relro_size) + & ~(GLRO(dl_pagesize) - 1)); + + if (start != end) + __mprotect ((void *) start, end - start, PROT_READ | PROT_WRITE); +} + +void +_dl_static_init (struct link_map *l) +{ + struct link_map *rtld_map = l; + struct r_scope_elem **scope; + const ElfW(Sym) *ref = NULL; + lookup_t loadbase; + void (*f) (void *[]); + size_t i; + + loadbase = _dl_lookup_symbol_x ("_dl_var_init", l, &ref, l->l_local_scope, + NULL, 0, 1, NULL); + + for (scope = l->l_local_scope; *scope != NULL; scope++) + for (i = 0; i < (*scope)->r_nlist; i++) + if ((*scope)->r_list[i] == loadbase) + { + rtld_map = (*scope)->r_list[i]; + break; + } + + if (ref != NULL) + { + f = (void (*) (void *[])) DL_SYMBOL_ADDRESS (loadbase, ref); + _dl_unprotect_relro (rtld_map); + f (variables); + _dl_protect_relro (rtld_map); + } +} + +#endif diff --git a/ports/sysdeps/unix/sysv/linux/m68k/ldsodefs.h b/ports/sysdeps/unix/sysv/linux/m68k/ldsodefs.h new file mode 100644 index 0000000000..18b22e8646 --- /dev/null +++ b/ports/sysdeps/unix/sysv/linux/m68k/ldsodefs.h @@ -0,0 +1,32 @@ +/* Run-time dynamic linker data structures for loaded ELF shared objects. M68K. + Copyright (C) 2013 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/>. */ + +#ifndef _LDSODEFS_H + +/* Get the real definitions. */ +#include_next <ldsodefs.h> + +/* Now define our stuff. */ + +/* We need special support to initialize DSO loaded for statically linked + binaries. */ +extern void _dl_static_init (struct link_map *map); +#undef DL_STATIC_INIT +#define DL_STATIC_INIT(map) _dl_static_init (map) + +#endif /* ldsodefs.h */ |