aboutsummaryrefslogtreecommitdiff
path: root/elf/get-dynamic-info.h
diff options
context:
space:
mode:
Diffstat (limited to 'elf/get-dynamic-info.h')
-rw-r--r--elf/get-dynamic-info.h184
1 files changed, 0 insertions, 184 deletions
diff --git a/elf/get-dynamic-info.h b/elf/get-dynamic-info.h
deleted file mode 100644
index 7525c3a5b2..0000000000
--- a/elf/get-dynamic-info.h
+++ /dev/null
@@ -1,184 +0,0 @@
-/* Read the dynamic section at DYN and fill in INFO with indices DT_*.
- Copyright (C) 2012-2017 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/>. */
-
-/* This file is included multiple times and therefore lacks a header
- file inclusion guard. */
-
-#include <assert.h>
-#include <libc-diag.h>
-
-#ifndef RESOLVE_MAP
-static
-#else
-auto
-#endif
-inline void __attribute__ ((unused, always_inline))
-elf_get_dynamic_info (struct link_map *l, ElfW(Dyn) *temp)
-{
- ElfW(Dyn) *dyn = l->l_ld;
- ElfW(Dyn) **info;
-#if __ELF_NATIVE_CLASS == 32
- typedef Elf32_Word d_tag_utype;
-#elif __ELF_NATIVE_CLASS == 64
- typedef Elf64_Xword d_tag_utype;
-#endif
-
-#ifndef RTLD_BOOTSTRAP
- if (dyn == NULL)
- return;
-#endif
-
- info = l->l_info;
-
- while (dyn->d_tag != DT_NULL)
- {
- if ((d_tag_utype) dyn->d_tag < DT_NUM)
- info[dyn->d_tag] = dyn;
- else if (dyn->d_tag >= DT_LOPROC &&
- dyn->d_tag < DT_LOPROC + DT_THISPROCNUM)
- {
- /* This does not violate the array bounds of l->l_info, but
- gcc 4.6 on sparc somehow does not see this. */
- DIAG_PUSH_NEEDS_COMMENT;
- DIAG_IGNORE_NEEDS_COMMENT (4.6,
- "-Warray-bounds");
- info[dyn->d_tag - DT_LOPROC + DT_NUM] = dyn;
- DIAG_POP_NEEDS_COMMENT;
- }
- else if ((d_tag_utype) DT_VERSIONTAGIDX (dyn->d_tag) < DT_VERSIONTAGNUM)
- info[VERSYMIDX (dyn->d_tag)] = dyn;
- else if ((d_tag_utype) DT_EXTRATAGIDX (dyn->d_tag) < DT_EXTRANUM)
- info[DT_EXTRATAGIDX (dyn->d_tag) + DT_NUM + DT_THISPROCNUM
- + DT_VERSIONTAGNUM] = dyn;
- else if ((d_tag_utype) DT_VALTAGIDX (dyn->d_tag) < DT_VALNUM)
- info[DT_VALTAGIDX (dyn->d_tag) + DT_NUM + DT_THISPROCNUM
- + DT_VERSIONTAGNUM + DT_EXTRANUM] = dyn;
- else if ((d_tag_utype) DT_ADDRTAGIDX (dyn->d_tag) < DT_ADDRNUM)
- info[DT_ADDRTAGIDX (dyn->d_tag) + DT_NUM + DT_THISPROCNUM
- + DT_VERSIONTAGNUM + DT_EXTRANUM + DT_VALNUM] = dyn;
- ++dyn;
- }
-
-#define DL_RO_DYN_TEMP_CNT 8
-
-#ifndef DL_RO_DYN_SECTION
- /* Don't adjust .dynamic unnecessarily. */
- if (l->l_addr != 0)
- {
- ElfW(Addr) l_addr = l->l_addr;
- int cnt = 0;
-
-# define ADJUST_DYN_INFO(tag) \
- do \
- if (info[tag] != NULL) \
- { \
- if (temp) \
- { \
- temp[cnt].d_tag = info[tag]->d_tag; \
- temp[cnt].d_un.d_ptr = info[tag]->d_un.d_ptr + l_addr; \
- info[tag] = temp + cnt++; \
- } \
- else \
- info[tag]->d_un.d_ptr += l_addr; \
- } \
- while (0)
-
- ADJUST_DYN_INFO (DT_HASH);
- ADJUST_DYN_INFO (DT_PLTGOT);
- ADJUST_DYN_INFO (DT_STRTAB);
- ADJUST_DYN_INFO (DT_SYMTAB);
-# if ! ELF_MACHINE_NO_RELA
- ADJUST_DYN_INFO (DT_RELA);
-# endif
-# if ! ELF_MACHINE_NO_REL
- ADJUST_DYN_INFO (DT_REL);
-# endif
- ADJUST_DYN_INFO (DT_JMPREL);
- ADJUST_DYN_INFO (VERSYMIDX (DT_VERSYM));
- ADJUST_DYN_INFO (DT_ADDRTAGIDX (DT_GNU_HASH) + DT_NUM + DT_THISPROCNUM
- + DT_VERSIONTAGNUM + DT_EXTRANUM + DT_VALNUM);
-# undef ADJUST_DYN_INFO
- assert (cnt <= DL_RO_DYN_TEMP_CNT);
- }
-#endif
- if (info[DT_PLTREL] != NULL)
- {
-#if ELF_MACHINE_NO_RELA
- assert (info[DT_PLTREL]->d_un.d_val == DT_REL);
-#elif ELF_MACHINE_NO_REL
- assert (info[DT_PLTREL]->d_un.d_val == DT_RELA);
-#else
- assert (info[DT_PLTREL]->d_un.d_val == DT_REL
- || info[DT_PLTREL]->d_un.d_val == DT_RELA);
-#endif
- }
-#if ! ELF_MACHINE_NO_RELA
- if (info[DT_RELA] != NULL)
- assert (info[DT_RELAENT]->d_un.d_val == sizeof (ElfW(Rela)));
-# endif
-# if ! ELF_MACHINE_NO_REL
- if (info[DT_REL] != NULL)
- assert (info[DT_RELENT]->d_un.d_val == sizeof (ElfW(Rel)));
-#endif
-#ifdef RTLD_BOOTSTRAP
- /* Only the bind now flags are allowed. */
- assert (info[VERSYMIDX (DT_FLAGS_1)] == NULL
- || (info[VERSYMIDX (DT_FLAGS_1)]->d_un.d_val & ~DF_1_NOW) == 0);
- assert (info[DT_FLAGS] == NULL
- || (info[DT_FLAGS]->d_un.d_val & ~DF_BIND_NOW) == 0);
- /* Flags must not be set for ld.so. */
- assert (info[DT_RUNPATH] == NULL);
- assert (info[DT_RPATH] == NULL);
-#else
- if (info[DT_FLAGS] != NULL)
- {
- /* Flags are used. Translate to the old form where available.
- Since these l_info entries are only tested for NULL pointers it
- is ok if they point to the DT_FLAGS entry. */
- l->l_flags = info[DT_FLAGS]->d_un.d_val;
-
- if (l->l_flags & DF_SYMBOLIC)
- info[DT_SYMBOLIC] = info[DT_FLAGS];
- if (l->l_flags & DF_TEXTREL)
- info[DT_TEXTREL] = info[DT_FLAGS];
- if (l->l_flags & DF_BIND_NOW)
- info[DT_BIND_NOW] = info[DT_FLAGS];
- }
- if (info[VERSYMIDX (DT_FLAGS_1)] != NULL)
- {
- l->l_flags_1 = info[VERSYMIDX (DT_FLAGS_1)]->d_un.d_val;
-
- /* Only DT_1_SUPPORTED_MASK bits are supported, and we would like
- to assert this, but we can't. Users have been setting
- unsupported DF_1_* flags for a long time and glibc has ignored
- them. Therefore to avoid breaking existing applications the
- best we can do is add a warning during debugging with the
- intent of notifying the user of the problem. */
- if (__builtin_expect (GLRO(dl_debug_mask) & DL_DEBUG_FILES, 0)
- && l->l_flags_1 & ~DT_1_SUPPORTED_MASK)
- _dl_debug_printf ("\nWARNING: Unsupported flag value(s) of 0x%x in DT_FLAGS_1.\n",
- l->l_flags_1 & ~DT_1_SUPPORTED_MASK);
-
- if (l->l_flags_1 & DF_1_NOW)
- info[DT_BIND_NOW] = info[VERSYMIDX (DT_FLAGS_1)];
- }
- if (info[DT_RUNPATH] != NULL)
- /* If both RUNPATH and RPATH are given, the latter is ignored. */
- info[DT_RPATH] = NULL;
-#endif
-}
generated by cgit v1.2.3-70-g09d2 (git 2.48.1) at 2025-07-06 23:56:24 +0000