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Thu Jun 8 02:50:26 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* elf/rtld.c [! NDEBUG] (__assert_perror_fail): New function. * hurd/hurdstartup.c (_hurd_startup): Fancier kludge to guess phdr and user entry point addresses. * elf/dl-load.c (open_path): Don't do strlen on DIRPATH if it's null. (_dl_map_object): DT_RPATH value is relative to DT_STRTAB value. * Makerules (install-lib.so): Don't include libc.so. [$(build-shared)=yes] (install): Depend on the installed libc.so file. [$(build-shared)=yes] (install-no-libc.a): Make this, rather than install, depend on the installed $(install-lib.so) files. [$(build-shared)=yes] (install-lib.so): Append libc.so after that rule. * sysdeps/mach/hurd/dl-sysdep.c (_dl_sysdep_start): Add kludge to allocate high addresses to avoid random mappings appearing there. (mmap): Comment out mask; always pass zero. Tue Jun 6 13:34:53 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> * sysdeps/i386/dl-machine.h (ELF_MACHINE_USER_ADDRESS_MASK): New macro. * sysdeps/mach/hurd/dl-sysdep.c (mmap): Use it as mask in vm_map call. * elf/dl-error.c (_dl_catch_error): Clear *ERRSTRING and *OBJNAME when successful. * sysdeps/mach/hurd/dl-sysdep.c (threadvars): New static variable. (__hurd_threadvar_max, __hurd_threadvar_stack_offset): Define these variables, using the `threadvars' buffer. * elf/dl-reloc.c: Don't dereference L->l_prev when it's null. * sysdeps/i386/dl-runtime.c: Likewise. * elf/rtld.c (dl_main): Add missing NULL terminating argument in _dl_sysdep_fatal call. (__assert_fail): Likewise. * locale/Makefile (localedef-modules): Renamed ctype to locale-ctype so as not to conflict with the object file for ctype/ctype.c in the build directory. * sysdeps/i386/dl-machine.h (elf_machine_rel): If MAP->l_type is lt_interpreter, first undo relocation done during bootstrapping.
This commit is contained in:
Roland McGrath
parent
75598ca67e
commit
5bf62f2d3a
45
ChangeLog
45
ChangeLog
@ -1,3 +1,46 @@
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Thu Jun 8 02:50:26 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
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* elf/rtld.c [! NDEBUG] (__assert_perror_fail): New function.
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* hurd/hurdstartup.c (_hurd_startup): Fancier kludge to guess phdr
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and user entry point addresses.
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* elf/dl-load.c (open_path): Don't do strlen on DIRPATH if it's null.
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(_dl_map_object): DT_RPATH value is relative to DT_STRTAB value.
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* Makerules (install-lib.so): Don't include libc.so.
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[$(build-shared)=yes] (install): Depend on the installed libc.so file.
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[$(build-shared)=yes] (install-no-libc.a): Make this, rather than
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install, depend on the installed $(install-lib.so) files.
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[$(build-shared)=yes] (install-lib.so): Append libc.so after that rule.
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* sysdeps/mach/hurd/dl-sysdep.c (_dl_sysdep_start): Add kludge to
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allocate high addresses to avoid random mappings appearing there.
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(mmap): Comment out mask; always pass zero.
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Tue Jun 6 13:34:53 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
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* sysdeps/i386/dl-machine.h (ELF_MACHINE_USER_ADDRESS_MASK): New macro.
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* sysdeps/mach/hurd/dl-sysdep.c (mmap): Use it as mask in vm_map call.
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* elf/dl-error.c (_dl_catch_error): Clear *ERRSTRING and *OBJNAME
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when successful.
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* sysdeps/mach/hurd/dl-sysdep.c (threadvars): New static variable.
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(__hurd_threadvar_max, __hurd_threadvar_stack_offset): Define these
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variables, using the `threadvars' buffer.
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* elf/dl-reloc.c: Don't dereference L->l_prev when it's null.
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* sysdeps/i386/dl-runtime.c: Likewise.
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* elf/rtld.c (dl_main): Add missing NULL terminating argument in
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_dl_sysdep_fatal call.
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(__assert_fail): Likewise.
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* locale/Makefile (localedef-modules): Renamed ctype to
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locale-ctype so as not to conflict with the object file for
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ctype/ctype.c in the build directory.
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Mon Jun 5 04:02:26 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
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* elf/elf.h (ELFMAG): Use \177 instead of \x7f. It seems GCC
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@ -15,6 +58,8 @@ Thu Jun 1 12:17:52 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
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* elf/rtld.c: Initialize RTLD_MAP.l_type.
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* elf/dl-reloc.c (_dl_relocate_object): Clear LAZY if relocating
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the dynamic linker itself.
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* sysdeps/i386/dl-machine.h (elf_machine_rel): If MAP->l_type is
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lt_interpreter, first undo relocation done during bootstrapping.
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Tue May 30 15:52:32 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
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@ -492,12 +492,15 @@ $(INSTALL_PROGRAM) $< $@.new
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mv -f $@.new $@
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endef
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install-lib.so := libc.so $(filter %.so,$(install-lib:%_pic.a=%.so))
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install-lib.so := $(filter %.so,$(install-lib:%_pic.a=%.so))
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install-lib := $(filter-out %.so,$(install-lib))
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ifeq (yes,$(build-shared))
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install: $(foreach so,$(install-lib.so),\
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install: $(libdir)/libc.so$(libc.so-version)
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install-no-libc.a: $(foreach so,$(install-lib.so),\
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$(libdir)/$(patsubst $(libprefix)lib%,lib$(libprefix)%,\
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$(libprefix)$(so))$($(so)-version))
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install-lib.so += libc.so
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$(foreach v,$(sort $(foreach so,$(install-lib.so),.so$($(so)-version))),\
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$(libdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so
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$(do-install-program)
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@ -46,6 +46,7 @@ _dl_catch_error (const char **errstring,
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if (errcode == 0)
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{
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(*operate) ();
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*errstring = *objname = NULL;
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return 0;
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}
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@ -54,7 +54,7 @@ open_path (const char *name, size_t namelen,
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const char *dirpath,
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char **realname)
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{
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char buf[strlen (dirpath) + 1 + namelen];
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char *buf;
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const char *p;
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int fd;
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@ -65,6 +65,7 @@ open_path (const char *name, size_t namelen,
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return -1;
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}
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buf = alloca (strlen (dirpath) + 1 + namelen);
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do
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{
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dirpath = p;
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@ -166,7 +167,8 @@ _dl_map_object (struct link_map *loader, const char *name,
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fd = -1;
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if (loader && loader->l_info[DT_RPATH])
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trypath ((const char *) (loader->l_addr +
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loader->l_info[DT_RPATH]->d_un.d_ptr));
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loader->l_info[DT_STRTAB]->d_un.d_ptr +
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loader->l_info[DT_RPATH]->d_un.d_val));
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if (fd == -1 && ! _dl_secure)
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trypath (getenv ("LD_LIBRARY_PATH"));
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if (fd == -1)
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@ -69,7 +69,8 @@ _dl_relocate_object (struct link_map *l, int lazy)
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real_next = l->l_next;
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if (l->l_info[DT_SYMBOLIC])
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{
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l->l_prev->l_next = real_next;
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if (l->l_prev)
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l->l_prev->l_next = real_next;
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l->l_next = _dl_loaded;
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scope = l;
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}
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@ -88,7 +89,8 @@ _dl_relocate_object (struct link_map *l, int lazy)
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/* Restore list frobnication done above for DT_SYMBOLIC. */
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l->l_next = real_next;
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l->l_prev->l_next = l;
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if (l->l_prev)
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l->l_prev->l_next = l;
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}
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if (l->l_info[DT_JMPREL] && lazy)
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22
elf/rtld.c
22
elf/rtld.c
@ -144,8 +144,8 @@ command line to load and run an ELF executable file; this is like executing\n\
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that file itself, but always uses this helper program from the file you\n\
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specified, instead of the helper program file specified in the executable\n\
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file you run. This is mostly of use for maintainers to test new versions\n\
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of this helper program; chances are you did not intend to run this program.\n"
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);
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of this helper program; chances are you did not intend to run this program.\n",
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NULL);
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rtld_command = 1;
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interpreter_name = _dl_argv[0];
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@ -289,9 +289,25 @@ __assert_fail (const char *assertion,
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_dl_sysdep_fatal ("BUG IN DYNAMIC LINKER ld.so: ",
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file, ": ", _itoa (line, buf + sizeof buf - 1, 10, 0),
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": ", function ?: "", function ? ": " : "",
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"Assertion `", assertion, "' failed!\n");
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"Assertion `", assertion, "' failed!\n",
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NULL);
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}
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weak_symbol (__assert_fail)
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void
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__assert_perror_fail (int errnum,
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const char *file, unsigned int line,
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const char *function)
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{
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char buf[64];
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buf[sizeof buf - 1] = '\0';
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_dl_sysdep_fatal ("BUG IN DYNAMIC LINKER ld.so: ",
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file, ": ", _itoa (line, buf + sizeof buf - 1, 10, 0),
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": ", function ?: "", function ? ": " : "",
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"Unexpected error: ", strerror (errnum), "\n", NULL);
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}
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weak_symbol (__assert_perror_fail)
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#endif
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@ -158,33 +158,29 @@ _hurd_startup (void **argptr, void (*main) (int *data))
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{
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struct hurd_startup_data *d = (void *) &envp[envc + 1];
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/* XXX hardcoded until exec_startup changes */
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#ifdef PIC
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#if 0
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const Elf32_Ehdr *ehdr = (const void *) 0x08000000;
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vm_address_t phdr = 0x08000000 + ehdr->e_phoff;
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vm_size_t phdrsz = ehdr->e_phnum * ehdr->e_phentsize;
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vm_address_t user_entry = ehdr->e_entry;
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#else
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vm_address_t phdr = 0;
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vm_size_t phdrsz = 0;
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extern void _start();
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vm_address_t user_entry = (vm_address_t) &_start;
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#endif
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#else
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vm_address_t phdr = 0;
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vm_size_t phdrsz = 0;
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vm_address_t user_entry = 0;
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#endif
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if ((void *) d != argv[0])
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{
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*d = data;
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_hurd_init_dtable = d->dtable;
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_hurd_init_dtablesize = d->dtablesize;
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d->phdr = phdr;
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d->phdrsz = phdrsz;
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d->user_entry = user_entry;
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/* XXX hardcoded kludge until exec_startup changes */
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{
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extern void _start();
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vm_address_t page = 0;
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vm_size_t size = 0;
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if (__vm_read (__mach_task_self (),
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0x08000000, __vm_page_size, &page, &size) == 0)
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{
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const Elf32_Ehdr *ehdr = (const void *) 0x08000000;
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d->phdr = 0x08000000 + ehdr->e_phoff;
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d->phdrsz = ehdr->e_phnum * ehdr->e_phentsize;
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d->user_entry = ehdr->e_entry;
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__vm_deallocate (__mach_task_self (), page, size);
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}
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else
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d->user_entry = (Elf32_Addr) &_start;
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}
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}
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(*main) (argcptr);
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@ -34,7 +34,7 @@ install-bin = localedef locale
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extra-objs = $(localedef-modules:=.o) $(locale-modules:=.o) \
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$(lib-modules:=.o)
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localedef-modules := charmap locfile-lex locfile-parse ctype \
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localedef-modules := charmap locfile-lex locfile-parse locale-ctype \
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monetary messages collate numeric
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locale-modules := ctypedump
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lib-modules := error hash xmalloc
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@ -66,8 +66,19 @@ char *malloc ();
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char *realloc ();
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#endif
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/* We used to test for `BSTRING' here, but only GCC and Emacs define
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`BSTRING', as far as I know, and neither of them use this code. */
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/* When used in Emacs's lib-src, we need to get bzero and bcopy somehow.
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If nothing else has been done, use the method below. */
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#ifdef INHIBIT_STRING_HEADER
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#if !(defined (HAVE_BZERO) && defined (HAVE_BCOPY))
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#if !defined (bzero) && !defined (bcopy)
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#undef INHIBIT_STRING_HEADER
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#endif
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#endif
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#endif
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/* This is the normal way of making sure we have a bcopy and a bzero.
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This is used in most programs--a few other programs avoid this
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by defining INHIBIT_STRING_HEADER. */
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#ifndef INHIBIT_STRING_HEADER
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#if HAVE_STRING_H || STDC_HEADERS || defined (_LIBC)
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#include <string.h>
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@ -187,7 +198,7 @@ init_syntax_once ()
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#define ISXDIGIT(c) (ISASCII (c) && isxdigit (c))
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#ifndef NULL
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#define NULL 0
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#define NULL (void *)0
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#endif
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/* We remove any previous definition of `SIGN_EXTEND_CHAR',
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@ -2760,7 +2771,7 @@ at_endline_loc_p (p, pend, syntax)
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{
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const char *next = p;
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boolean next_backslash = *next == '\\';
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const char *next_next = p + 1 < pend ? p + 1 : NULL;
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const char *next_next = p + 1 < pend ? p + 1 : 0;
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return
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/* Before a subexpression? */
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@ -88,10 +88,22 @@ elf_machine_rel (struct link_map *map,
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*reloc_addr = sym_value;
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break;
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case R_386_32:
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if (map->l_type == lt_interpreter)
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{
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/* Undo the relocation done here during bootstrapping. Now we will
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relocate it anew, possibly using a binding found in the user
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program or a loaded library rather than the dynamic linker's
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built-in definitions used while loading those libraries. */
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const Elf32_Sym *const dlsymtab
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= (void *) (map->l_addr + map->l_info[DT_SYMTAB]->d_un.d_ptr);
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*reloc_addr -= (map->l_addr +
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dlsymtab[ELF32_R_SYM (reloc->r_info)].st_value);
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}
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*reloc_addr += sym_value;
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break;
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case R_386_RELATIVE:
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*reloc_addr += map->l_addr;
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if (map->l_type != lt_interpreter) /* Already done in dynamic linker. */
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*reloc_addr += map->l_addr;
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break;
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case R_386_PC32:
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*reloc_addr = sym_value - (Elf32_Addr) reloc_addr;
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@ -142,6 +154,12 @@ elf_machine_runtime_setup (struct link_map *l)
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}
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/* Mask identifying addresses reserved for the user program,
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where the dynamic linker should not map anything. */
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#define ELF_MACHINE_USER_ADDRESS_MASK 0xf8000000UL
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/* Initial entry point code for the dynamic linker.
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The C function `_dl_start' is the real entry point;
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its return value is the user program's entry point. */
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@ -54,8 +54,9 @@ _dl_runtime_resolve (Elf32_Word reloc_offset)
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real_next = l->l_next;
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if (l->l_info[DT_SYMBOLIC])
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{
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l->l_prev->l_next = real_next;
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l->l_next = _dl_loaded;
|
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if (l->l_prev)
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l->l_prev->l_next = real_next;
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scope = l;
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}
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else
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@ -67,7 +68,8 @@ _dl_runtime_resolve (Elf32_Word reloc_offset)
|
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|
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/* Restore list frobnication done above for DT_SYMBOLIC. */
|
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l->l_next = real_next;
|
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l->l_prev->l_next = l;
|
||||
if (l->l_prev)
|
||||
l->l_prev->l_next = l;
|
||||
|
||||
/* Apply the relocation with that value. */
|
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elf_machine_rel (l, reloc, loadbase, definer);
|
||||
|
||||
@ -44,6 +44,36 @@ extern char **_environ;
|
||||
|
||||
struct hurd_startup_data *_dl_hurd_data;
|
||||
|
||||
unsigned int __hurd_threadvar_max = _HURD_THREADVAR_MAX;
|
||||
static unsigned long int threadvars[_HURD_THREADVAR_MAX];
|
||||
unsigned long int __hurd_threadvar_stack_offset
|
||||
= (unsigned long int) &threadvars;
|
||||
|
||||
|
||||
/* XXX loser kludge for vm_map kernel bug */
|
||||
static vm_address_t fmha;
|
||||
static vm_size_t fmhs;
|
||||
static void unfmh(){
|
||||
__vm_deallocate(__mach_task_self(),fmha,fmhs);}
|
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static void fmh() {
|
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error_t err;int x;mach_port_t p;
|
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vm_address_t a=0x08000000U,max=VM_MAX_ADDRESS;
|
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while (!(err=__vm_region(__mach_task_self(),&a,&fmhs,&x,&x,&x,&x,&p,&x))){
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__mach_port_deallocate(__mach_task_self(),p);
|
||||
if (a+fmhs>=0x80000000U){
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max=a;break;}
|
||||
fmha=a+=fmhs;}
|
||||
if (err) assert(err==KERN_NO_SPACE);
|
||||
fmhs=max-fmha;
|
||||
err = __vm_map (__mach_task_self (),
|
||||
&fmha, fmhs, 0, 0, MACH_PORT_NULL, 0, 1,
|
||||
VM_PROT_NONE, VM_PROT_NONE, VM_INHERIT_COPY);
|
||||
assert_perror(err);
|
||||
}
|
||||
/* XXX loser kludge for vm_map kernel bug */
|
||||
|
||||
|
||||
|
||||
Elf32_Addr
|
||||
_dl_sysdep_start (void **start_argptr,
|
||||
void (*dl_main) (const Elf32_Phdr *phdr, Elf32_Word phent,
|
||||
@ -62,6 +92,7 @@ _dl_sysdep_start (void **start_argptr,
|
||||
|
||||
_dl_secure = _dl_hurd_data->flags & EXEC_SECURE;
|
||||
|
||||
unfmh(); /* XXX */
|
||||
/* Call elf/rtld.c's main program. It will set everything
|
||||
up and leave us to transfer control to USER_ENTRY. */
|
||||
(*dl_main) ((const Elf32_Phdr *) _dl_hurd_data->phdr,
|
||||
@ -85,6 +116,8 @@ _dl_sysdep_start (void **start_argptr,
|
||||
/* Set up so we can do RPCs. */
|
||||
__mach_init ();
|
||||
|
||||
fmh(); /* XXX */
|
||||
|
||||
/* See hurd/hurdstartup.c; this deals with getting information
|
||||
from the exec server and slicing up the arguments.
|
||||
Then it will call `go', above. */
|
||||
@ -92,22 +125,6 @@ _dl_sysdep_start (void **start_argptr,
|
||||
|
||||
LOSE;
|
||||
}
|
||||
|
||||
/* This is called when all other dynamic linking is finished, before the
|
||||
dynamic linker re-relocates itself when ld.so itself appears in a
|
||||
DT_NEEDED entry. It is called whether of not ld.so is being linked in.
|
||||
|
||||
We take this opportunity to deallocate the reply port and task-self send
|
||||
right user reference we have acquired, since they will not be used again
|
||||
before the library and user code runs. The C library will acquire its
|
||||
own ports in its initialization. */
|
||||
|
||||
void
|
||||
_dl_sysdep_prepare_for_ld_reloc (void)
|
||||
{
|
||||
__mig_dealloc_reply_port (__mig_get_reply_port ());
|
||||
__mach_port_deallocate (__mach_task_self (), __mach_task_self ());
|
||||
}
|
||||
|
||||
int
|
||||
_dl_sysdep_open_zero_fill (void)
|
||||
@ -415,7 +432,7 @@ mmap (caddr_t addr, size_t len, int prot, int flags, int fd, off_t offset)
|
||||
|
||||
mapaddr = (vm_address_t) addr;
|
||||
errno = __vm_map (__mach_task_self (),
|
||||
&mapaddr, (vm_size_t) len, (vm_address_t) 0,
|
||||
&mapaddr, (vm_size_t) len, 0 /*ELF_MACHINE_USER_ADDRESS_MASK*/,
|
||||
!(flags & MAP_FIXED),
|
||||
(mach_port_t) fd, (vm_offset_t) offset,
|
||||
flags & (MAP_COPY|MAP_PRIVATE),
|
||||
|
||||
Loading…
Reference in New Issue
Block a user