diff options
36 files changed, 272 insertions, 175 deletions
diff --git a/elf/dl-load.c b/elf/dl-load.c index eea06629a9..fb3da5aa56 100644 --- a/elf/dl-load.c +++ b/elf/dl-load.c @@ -1296,7 +1296,7 @@ _dl_map_object_from_fd (const char *name, const char *origname, int fd, if (l->l_ld != 0) l->l_ld = (ElfW(Dyn) *) ((ElfW(Addr)) l->l_ld + l->l_addr); - elf_get_dynamic_info (l, false); + elf_get_dynamic_info (l); /* Make sure we are not dlopen'ing an object that has the DF_1_NOOPEN flag set, or a PIE object. */ diff --git a/elf/dl-reloc-static-pie.c b/elf/dl-reloc-static-pie.c index f323b4dd0d..ababafcf98 100644 --- a/elf/dl-reloc-static-pie.c +++ b/elf/dl-reloc-static-pie.c @@ -52,7 +52,7 @@ _dl_relocate_static_pie (void) break; } - elf_get_dynamic_info (main_map, false); + elf_get_dynamic_info (main_map); # ifdef ELF_MACHINE_BEFORE_RTLD_RELOC ELF_MACHINE_BEFORE_RTLD_RELOC (main_map, main_map->l_info); diff --git a/elf/dl-static-tls.h b/elf/dl-static-tls.h new file mode 100644 index 0000000000..730924fc01 --- /dev/null +++ b/elf/dl-static-tls.h @@ -0,0 +1,51 @@ +/* Inline functions for dynamic linking. + Copyright (C) 1995-2021 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 + <https://www.gnu.org/licenses/>. */ + +#ifndef _DL_STATIC_TLS_H +#define _DL_STATIC_TLS_H + +/* This macro is used as a callback from elf_machine_rel{a,} when a + static TLS reloc is about to be performed. Since (in dl-load.c) we + permit dynamic loading of objects that might use such relocs, we + have to check whether each use is actually doable. If the object + whose TLS segment the reference resolves to was allocated space in + the static TLS block at startup, then it's ok. Otherwise, we make + an attempt to allocate it in surplus space on the fly. If that + can't be done, we fall back to the error that DF_STATIC_TLS is + intended to produce. */ +#define HAVE_STATIC_TLS(map, sym_map) \ + (__builtin_expect ((sym_map)->l_tls_offset != NO_TLS_OFFSET \ + && ((sym_map)->l_tls_offset \ + != FORCED_DYNAMIC_TLS_OFFSET), 1)) + +#define CHECK_STATIC_TLS(map, sym_map) \ + do { \ + if (!HAVE_STATIC_TLS (map, sym_map)) \ + _dl_allocate_static_tls (sym_map); \ + } while (0) + +#define TRY_STATIC_TLS(map, sym_map) \ + (__builtin_expect ((sym_map)->l_tls_offset \ + != FORCED_DYNAMIC_TLS_OFFSET, 1) \ + && (__builtin_expect ((sym_map)->l_tls_offset != NO_TLS_OFFSET, 1) \ + || _dl_try_allocate_static_tls (sym_map, true) == 0)) + +int _dl_try_allocate_static_tls (struct link_map *map, bool optional) + attribute_hidden; + +#endif diff --git a/elf/dynamic-link.h b/elf/dynamic-link.h index 21cdfc88bb..ac4cc70dea 100644 --- a/elf/dynamic-link.h +++ b/elf/dynamic-link.h @@ -16,35 +16,7 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ -/* This macro is used as a callback from elf_machine_rel{a,} when a - static TLS reloc is about to be performed. Since (in dl-load.c) we - permit dynamic loading of objects that might use such relocs, we - have to check whether each use is actually doable. If the object - whose TLS segment the reference resolves to was allocated space in - the static TLS block at startup, then it's ok. Otherwise, we make - an attempt to allocate it in surplus space on the fly. If that - can't be done, we fall back to the error that DF_STATIC_TLS is - intended to produce. */ -#define HAVE_STATIC_TLS(map, sym_map) \ - (__builtin_expect ((sym_map)->l_tls_offset != NO_TLS_OFFSET \ - && ((sym_map)->l_tls_offset \ - != FORCED_DYNAMIC_TLS_OFFSET), 1)) - -#define CHECK_STATIC_TLS(map, sym_map) \ - do { \ - if (!HAVE_STATIC_TLS (map, sym_map)) \ - _dl_allocate_static_tls (sym_map); \ - } while (0) - -#define TRY_STATIC_TLS(map, sym_map) \ - (__builtin_expect ((sym_map)->l_tls_offset \ - != FORCED_DYNAMIC_TLS_OFFSET, 1) \ - && (__builtin_expect ((sym_map)->l_tls_offset != NO_TLS_OFFSET, 1) \ - || _dl_try_allocate_static_tls (sym_map, true) == 0)) - -int _dl_try_allocate_static_tls (struct link_map *map, bool optional) - attribute_hidden; - +#include <dl-machine.h> #include <elf.h> #ifdef RESOLVE_MAP @@ -91,9 +63,6 @@ elf_machine_lazy_rel (struct link_map *map, struct r_scope_elem *scope[], # endif #endif -#include <dl-machine.h> - - #ifdef RESOLVE_MAP # if defined RTLD_BOOTSTRAP || defined STATIC_PIE_BOOTSTRAP diff --git a/elf/get-dynamic-info.h b/elf/get-dynamic-info.h index d169099fbc..1ac0663d1f 100644 --- a/elf/get-dynamic-info.h +++ b/elf/get-dynamic-info.h @@ -22,10 +22,11 @@ #define _GET_DYNAMIC_INFO_H #include <assert.h> +#include <dl-machine-rel.h> #include <libc-diag.h> static inline void __attribute__ ((unused, always_inline)) -elf_get_dynamic_info (struct link_map *l, bool check) +elf_get_dynamic_info (struct link_map *l) { #if __ELF_NATIVE_CLASS == 32 typedef Elf32_Word d_tag_utype; @@ -33,7 +34,7 @@ elf_get_dynamic_info (struct link_map *l, bool check) typedef Elf64_Xword d_tag_utype; #endif -#if !defined RTLD_BOOTSTRAP && !defined STATIC_PIE_BOOTSTRAP +#ifndef STATIC_PIE_BOOTSTRAP if (l->l_ld == NULL) return; #endif @@ -111,21 +112,10 @@ elf_get_dynamic_info (struct link_map *l, bool check) if (info[DT_REL] != NULL) assert (info[DT_RELENT]->d_un.d_val == sizeof (ElfW(Rel))); #endif -#ifdef RTLD_BOOTSTRAP - if (check) - { - /* 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); - /* Flags must not be set for ld.so. */ - assert (info[DT_FLAGS] == NULL - || (info[DT_FLAGS]->d_un.d_val & ~DF_BIND_NOW) == 0); -# ifdef STATIC_PIE_BOOTSTRAP - assert (info[DT_RUNPATH] == NULL); - assert (info[DT_RPATH] == NULL); -# endif - } -#else +#ifdef STATIC_PIE_BOOTSTRAP + assert (info[DT_RUNPATH] == NULL); + assert (info[DT_RPATH] == NULL); +#endif if (info[DT_FLAGS] != NULL) { /* Flags are used. Translate to the old form where available. @@ -163,7 +153,6 @@ elf_get_dynamic_info (struct link_map *l, bool check) if (info[DT_RUNPATH] != NULL) /* If both RUNPATH and RPATH are given, the latter is ignored. */ info[DT_RPATH] = NULL; -#endif } #endif diff --git a/elf/rtld.c b/elf/rtld.c index 23207112a1..0a4c3d4fed 100644 --- a/elf/rtld.c +++ b/elf/rtld.c @@ -32,7 +32,6 @@ #include <fpu_control.h> #include <hp-timing.h> #include <libc-lock.h> -#include "dynamic-link.h" #include <dl-librecon.h> #include <unsecvars.h> #include <dl-cache.h> @@ -50,9 +49,18 @@ #include <dl-main.h> #include <gnu/lib-names.h> #include <dl-tunables.h> +#include <get-dynamic-info.h> #include <assert.h> +/* This #define produces dynamic linking inline functions for + bootstrap relocation instead of general-purpose relocation. + Since ld.so must not have any undefined symbols the result + is trivial: always the map of ld.so itself. */ +#define RTLD_BOOTSTRAP +#define RESOLVE_MAP(map, scope, sym, version, flags) map +#include "dynamic-link.h" + /* Only enables rtld profiling for architectures which provides non generic hp-timing support. The generic support requires either syscall (clock_gettime), which will incur in extra overhead on loading time. @@ -507,15 +515,6 @@ _dl_start_final (void *arg, struct dl_start_final_info *info) # define bootstrap_map info.l #endif - /* This #define produces dynamic linking inline functions for - bootstrap relocation instead of general-purpose relocation. - Since ld.so must not have any undefined symbols the result - is trivial: always the map of ld.so itself. */ -#define RTLD_BOOTSTRAP -#define RESOLVE_MAP(map, scope, sym, version, flags) map -#include "get-dynamic-info.h" -#include "dynamic-link.h" - static ElfW(Addr) __attribute_used__ _dl_start (void *arg) { @@ -549,7 +548,7 @@ _dl_start (void *arg) /* Read our own dynamic section and fill in the info array. */ bootstrap_map.l_ld = (void *) bootstrap_map.l_addr + elf_machine_dynamic (); bootstrap_map.l_ld_readonly = DL_RO_DYN_SECTION; - elf_get_dynamic_info (&bootstrap_map, true); + elf_get_dynamic_info (&bootstrap_map); #if NO_TLS_OFFSET != 0 bootstrap_map.l_tls_offset = NO_TLS_OFFSET; @@ -1617,7 +1616,7 @@ dl_main (const ElfW(Phdr) *phdr, if (! rtld_is_main) { /* Extract the contents of the dynamic section for easy access. */ - elf_get_dynamic_info (main_map, false); + elf_get_dynamic_info (main_map); /* If the main map is libc.so, update the base namespace to refer to this map. If libc.so is loaded later, this happens diff --git a/elf/setup-vdso.h b/elf/setup-vdso.h index 6fdffafcca..f44748bc98 100644 --- a/elf/setup-vdso.h +++ b/elf/setup-vdso.h @@ -64,7 +64,7 @@ setup_vdso (struct link_map *main_map __attribute__ ((unused)), l->l_map_end += l->l_addr; l->l_text_end += l->l_addr; l->l_ld = (void *) ((ElfW(Addr)) l->l_ld + l->l_addr); - elf_get_dynamic_info (l, false); + elf_get_dynamic_info (l); _dl_setup_hash (l); l->l_relocated = 1; diff --git a/sysdeps/aarch64/dl-machine.h b/sysdeps/aarch64/dl-machine.h index 34c0790b89..07af183e71 100644 --- a/sysdeps/aarch64/dl-machine.h +++ b/sysdeps/aarch64/dl-machine.h @@ -24,7 +24,9 @@ #include <sysdep.h> #include <tls.h> #include <dl-tlsdesc.h> +#include <dl-static-tls.h> #include <dl-irel.h> +#include <dl-machine-rel.h> #include <cpu-features.c> /* Translate a processor specific dynamic tag to the index in l_info array. */ @@ -196,10 +198,6 @@ _dl_start_user: \n\ #define ELF_MACHINE_JMP_SLOT AARCH64_R(JUMP_SLOT) -/* AArch64 uses RELA not REL */ -#define ELF_MACHINE_NO_REL 1 -#define ELF_MACHINE_NO_RELA 0 - #define DL_PLATFORM_INIT dl_platform_init () static inline void __attribute__ ((unused)) @@ -376,7 +374,7 @@ elf_machine_rela (struct link_map *map, struct r_scope_elem *scope[], } } -inline void +static inline void __attribute__ ((always_inline)) elf_machine_rela_relative (ElfW(Addr) l_addr, const ElfW(Rela) *reloc, diff --git a/sysdeps/alpha/dl-machine.h b/sysdeps/alpha/dl-machine.h index 66e1db524b..e948e54fb7 100644 --- a/sysdeps/alpha/dl-machine.h +++ b/sysdeps/alpha/dl-machine.h @@ -26,6 +26,8 @@ #define ELF_MACHINE_NAME "alpha" #include <string.h> +#include <dl-static-tls.h> +#include <dl-machine-rel.h> /* Mask identifying addresses reserved for the user program, @@ -241,10 +243,6 @@ $fixup_stack: \n\ /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */ #define ELF_MACHINE_JMP_SLOT R_ALPHA_JMP_SLOT -/* The alpha never uses Elf64_Rel relocations. */ -#define ELF_MACHINE_NO_REL 1 -#define ELF_MACHINE_NO_RELA 0 - /* We define an initialization functions. This is called very early in * _dl_sysdep_start. */ #define DL_PLATFORM_INIT dl_platform_init () diff --git a/sysdeps/arc/dl-machine.h b/sysdeps/arc/dl-machine.h index 4b64ffec25..f843ed9bd6 100644 --- a/sysdeps/arc/dl-machine.h +++ b/sysdeps/arc/dl-machine.h @@ -30,6 +30,8 @@ #include <string.h> #include <link.h> #include <dl-tls.h> +#include <dl-static-tls.h> +#include <dl-machine-rel.h> /* Dynamic Linking ABI for ARCv2 ISA. @@ -203,10 +205,6 @@ __start: \n\ /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */ #define ELF_MACHINE_JMP_SLOT R_ARC_JUMP_SLOT -/* ARC uses Rela relocations. */ -#define ELF_MACHINE_NO_REL 1 -#define ELF_MACHINE_NO_RELA 0 - /* Fixup a PLT entry to bounce directly to the function at VALUE. */ static inline ElfW(Addr) @@ -318,7 +316,7 @@ elf_machine_rela (struct link_map *map, struct r_scope_elem *scope[], } } -inline void +static inline void __attribute__ ((always_inline)) elf_machine_rela_relative (ElfW(Addr) l_addr, const ElfW(Rela) *reloc, void *const reloc_addr_arg) @@ -327,7 +325,7 @@ elf_machine_rela_relative (ElfW(Addr) l_addr, const ElfW(Rela) *reloc, *reloc_addr += l_addr; } -inline void +static inline void __attribute__ ((always_inline)) elf_machine_lazy_rel (struct link_map *map, struct r_scope_elem *scope[], ElfW(Addr) l_addr, const ElfW(Rela) *reloc, diff --git a/sysdeps/arm/dl-machine-rel.h b/sysdeps/arm/dl-machine-rel.h new file mode 100644 index 0000000000..bec114706c --- /dev/null +++ b/sysdeps/arm/dl-machine-rel.h @@ -0,0 +1,31 @@ +/* ELF dynamic relocation type supported by the architecture. ARM version. + Copyright (C) 2001-2021 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 + <https://www.gnu.org/licenses/>. */ + +#ifndef _DL_MACHINE_REL_H +#define _DL_MACHINE_REL_H + +/* ARM never uses Elf32_Rela relocations for the dynamic linker. + Prelinked libraries may use Elf32_Rela though. */ +#define ELF_MACHINE_NO_RELA defined RTLD_BOOTSTRAP +#define ELF_MACHINE_NO_REL 0 + +/* ARM never uses Elf32_Rela relocations for the dynamic linker. + Prelinked libraries may use Elf32_Rela though. */ +#define ELF_MACHINE_PLT_REL 1 + +#endif diff --git a/sysdeps/arm/dl-machine.h b/sysdeps/arm/dl-machine.h index 86f866ca7c..3239841eb5 100644 --- a/sysdeps/arm/dl-machine.h +++ b/sysdeps/arm/dl-machine.h @@ -26,6 +26,8 @@ #include <tls.h> #include <dl-tlsdesc.h> #include <dl-irel.h> +#include <dl-static-tls.h> +#include <dl-machine-rel.h> #ifndef CLEAR_CACHE # error CLEAR_CACHE definition required to handle TEXTREL @@ -258,10 +260,6 @@ _dl_start_user:\n\ /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */ #define ELF_MACHINE_JMP_SLOT R_ARM_JUMP_SLOT -/* ARM never uses Elf32_Rela relocations for the dynamic linker. - Prelinked libraries may use Elf32_Rela though. */ -#define ELF_MACHINE_PLT_REL 1 - /* We define an initialization functions. This is called very early in _dl_sysdep_start. */ #define DL_PLATFORM_INIT dl_platform_init () @@ -294,11 +292,6 @@ elf_machine_plt_value (struct link_map *map, const Elf32_Rel *reloc, #endif /* !dl_machine_h */ -/* ARM never uses Elf32_Rela relocations for the dynamic linker. - Prelinked libraries may use Elf32_Rela though. */ -#define ELF_MACHINE_NO_RELA defined RTLD_BOOTSTRAP -#define ELF_MACHINE_NO_REL 0 - /* Names of the architecture-specific auditing callback functions. */ #define ARCH_LA_PLTENTER arm_gnu_pltenter #define ARCH_LA_PLTEXIT arm_gnu_pltexit diff --git a/sysdeps/csky/dl-machine.h b/sysdeps/csky/dl-machine.h index ec22f87577..4dfd957877 100644 --- a/sysdeps/csky/dl-machine.h +++ b/sysdeps/csky/dl-machine.h @@ -24,6 +24,8 @@ #include <sys/param.h> #include <sysdep.h> #include <dl-tls.h> +#include <dl-static-tls.h> +#include <dl-machine-rel.h> /* Return nonzero if ELF header is compatible with the running host. */ static inline int @@ -172,10 +174,6 @@ _dl_start_user:\n\ /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */ #define ELF_MACHINE_JMP_SLOT R_CKCORE_JUMP_SLOT -/* C-SKY never uses Elf32_Rel relocations. */ -#define ELF_MACHINE_NO_REL 1 -#define ELF_MACHINE_NO_RELA 0 - /* We define an initialization functions. This is called very early in _dl_sysdep_start. */ #define DL_PLATFORM_INIT dl_platform_init () diff --git a/sysdeps/generic/dl-machine-rel.h b/sysdeps/generic/dl-machine-rel.h new file mode 100644 index 0000000000..9167a1dffc --- /dev/null +++ b/sysdeps/generic/dl-machine-rel.h @@ -0,0 +1,27 @@ +/* ELF dynamic relocation type supported by the architecture. + Copyright (C) 2001-2021 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 + <https://www.gnu.org/licenses/>. */ + +#ifndef _DL_MACHINE_REL_H +#define _DL_MACHINE_REL_H + +/* Defined if the architecture supports Elf{32,64}_Rel relocations. */ +#define ELF_MACHINE_NO_REL 1 +/* Defined if the architecture supports Elf{32,64}_Rela relocations. */ +#define ELF_MACHINE_NO_RELA 0 + +#endif diff --git a/sysdeps/generic/dl-machine.h b/sysdeps/generic/dl-machine.h index 4a4ab4fc70..7da695d903 100644 --- a/sysdeps/generic/dl-machine.h +++ b/sysdeps/generic/dl-machine.h @@ -20,6 +20,8 @@ #include <string.h> #include <link.h> +#include <dl-static-tls.h> +#include <dl-machine-rel.h> /* Return nonzero iff ELF header is compatible with the running host. */ diff --git a/sysdeps/hppa/dl-machine.h b/sysdeps/hppa/dl-machine.h index 088931f670..ac66f04418 100644 --- a/sysdeps/hppa/dl-machine.h +++ b/sysdeps/hppa/dl-machine.h @@ -31,6 +31,8 @@ #include <dl-fptr.h> #include <abort-instr.h> #include <tls.h> +#include <dl-static-tls.h> +#include <dl-machine-rel.h> /* These two definitions must match the definition of the stub in bfd/elf32-hppa.c (see plt_stub[]). @@ -525,10 +527,6 @@ asm ( \ #define ELF_MACHINE_JMP_SLOT R_PARISC_IPLT #define ELF_MACHINE_SIZEOF_JMP_SLOT PLT_ENTRY_SIZE -/* We only use RELA. */ -#define ELF_MACHINE_NO_REL 1 -#define ELF_MACHINE_NO_RELA 0 - /* Return the address of the entry point. */ #define ELF_MACHINE_START_ADDRESS(map, start) \ ({ \ diff --git a/sysdeps/i386/dl-machine-rel.h b/sysdeps/i386/dl-machine-rel.h new file mode 100644 index 0000000000..7ac46f78a6 --- /dev/null +++ b/sysdeps/i386/dl-machine-rel.h @@ -0,0 +1,31 @@ +/* ELF dynamic relocation type supported by the architecture. ARM version. + Copyright (C) 2001-2021 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 + <https://www.gnu.org/licenses/>. */ + +#ifndef _DL_MACHINE_REL_H +#define _DL_MACHINE_REL_H + +/* The i386 never uses Elf32_Rela relocations for the dynamic linker. + Prelinked libraries may use Elf32_Rela though. */ +#define ELF_MACHINE_NO_RELA defined RTLD_BOOTSTRAP +#define ELF_MACHINE_NO_REL 0 + +/* The i386 never uses Elf32_Rela relocations for the dynamic linker. + Prelinked libraries may use Elf32_Rela though. */ +#define ELF_MACHINE_PLT_REL 1 + +#endif diff --git a/sysdeps/i386/dl-machine.h b/sysdeps/i386/dl-machine.h index fa902612ca..c55c9a3d64 100644 --- a/sysdeps/i386/dl-machine.h +++ b/sysdeps/i386/dl-machine.h @@ -26,6 +26,8 @@ #include <sysdep.h> #include <tls.h> #include <dl-tlsdesc.h> +#include <dl-static-tls.h> +#include <dl-machine-rel.h> /* Return nonzero iff ELF header is compatible with the running host. */ static inline int __attribute__ ((unused)) @@ -237,10 +239,6 @@ _dl_start_user:\n\ /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */ #define ELF_MACHINE_JMP_SLOT R_386_JMP_SLOT -/* The i386 never uses Elf32_Rela relocations for the dynamic linker. - Prelinked libraries may use Elf32_Rela though. */ -#define ELF_MACHINE_PLT_REL 1 - /* We define an initialization functions. This is called very early in _dl_sysdep_start. */ #define DL_PLATFORM_INIT dl_platform_init () @@ -283,11 +281,6 @@ elf_machine_plt_value (struct link_map *map, const Elf32_Rel *reloc, #endif /* !dl_machine_h */ -/* The i386 never uses Elf32_Rela relocations for the dynamic linker. - Prelinked libraries may use Elf32_Rela though. */ -#define ELF_MACHINE_NO_RELA defined RTLD_BOOTSTRAP -#define ELF_MACHINE_NO_REL 0 - #ifdef RESOLVE_MAP /* Perform the relocation specified by RELOC and SYM (which is fully resolved). diff --git a/sysdeps/ia64/dl-machine.h b/sysdeps/ia64/dl-machine.h index 2217d0b556..c9608a51b0 100644 --- a/sysdeps/ia64/dl-machine.h +++ b/sysdeps/ia64/dl-machine.h @@ -27,6 +27,8 @@ #include <errno.h> #include <dl-fptr.h> #include <tls.h> +#include <dl-static-tls.h> +#include <dl-machine-rel.h> /* Translate a processor specific dynamic tag to the index in l_info array. */ @@ -319,10 +321,6 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[], /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */ #define ELF_MACHINE_JMP_SLOT R_IA64_IPLTLSB -/* According to the IA-64 specific documentation, Rela is always used. */ -#define ELF_MACHINE_NO_REL 1 -#define ELF_MACHINE_NO_RELA 0 - /* Return the address of the entry point. */ #define ELF_MACHINE_START_ADDRESS(map, start) \ ({ \ diff --git a/sysdeps/m68k/dl-machine.h b/sysdeps/m68k/dl-machine.h index 5e34c4784e..30323d62d4 100644 --- a/sysdeps/m68k/dl-machine.h +++ b/sysdeps/m68k/dl-machine.h @@ -24,6 +24,8 @@ #include <sys/param.h> #include <sysdep.h> #include <dl-tls.h> +#include <dl-static-tls.h> +#include <dl-machine-rel.h> /* Return nonzero iff ELF header is compatible with the running host. */ static inline int @@ -183,10 +185,6 @@ _dl_start_user:\n\ /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */ #define ELF_MACHINE_JMP_SLOT R_68K_JMP_SLOT -/* The m68k never uses Elf32_Rel relocations. */ -#define ELF_MACHINE_NO_REL 1 -#define ELF_MACHINE_NO_RELA 0 - static inline Elf32_Addr elf_machine_fixup_plt (struct link_map *map, lookup_t t, const ElfW(Sym) *refsym, const ElfW(Sym) *sym, diff --git a/sysdeps/microblaze/dl-machine.h b/sysdeps/microblaze/dl-machine.h index 3fd4988e60..b8cc5a7fe6 100644 --- a/sysdeps/microblaze/dl-machine.h +++ b/sysdeps/microblaze/dl-machine.h @@ -23,6 +23,8 @@ #include <sys/param.h> #include <tls.h> +#include <dl-static-tls.h> +#include <dl-machine-rel.h> /* Return nonzero iff ELF header is compatible with the running host. */ static inline int @@ -169,10 +171,6 @@ _dl_start_user:\n\ /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */ #define ELF_MACHINE_JMP_SLOT R_MICROBLAZE_JUMP_SLOT -/* The microblaze never uses Elf32_Rel relocations. */ -#define ELF_MACHINE_NO_REL 1 -#define ELF_MACHINE_NO_RELA 0 - static inline Elf32_Addr elf_machine_fixup_plt (struct link_map *map, lookup_t t, const ElfW(Sym) *refsym, const ElfW(Sym) *sym, diff --git a/sysdeps/mips/dl-machine-rel.h b/sysdeps/mips/dl-machine-rel.h new file mode 100644 index 0000000000..ed39618041 --- /dev/null +++ b/sysdeps/mips/dl-machine-rel.h @@ -0,0 +1,26 @@ +/* ELF dynamic relocation type supported by the architecture. ARM version. + Copyright (C) 2001-2021 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 + <https://www.gnu.org/licenses/>. */ + +#ifndef _DL_MACHINE_REL_H +#define _DL_MACHINE_REL_H + +#define ELF_MACHINE_PLT_REL 1 +#define ELF_MACHINE_NO_REL 0 +#define ELF_MACHINE_NO_RELA 0 + +#endif diff --git a/sysdeps/mips/dl-machine.h b/sysdeps/mips/dl-machine.h index 7a821ceb8e..45a394907a 100644 --- a/sysdeps/mips/dl-machine.h +++ b/sysdeps/mips/dl-machine.h @@ -33,6 +33,8 @@ #include <sysdep.h> #include <sys/asm.h> #include <dl-tls.h> +#include <dl-static-tls.h> +#include <dl-machine-rel.h> /* The offset of gp from GOT might be system-dependent. It's set by ld. The same value is also */ @@ -60,10 +62,6 @@ ((((type) == ELF_MACHINE_JMP_SLOT) * ELF_RTYPE_CLASS_PLT) \ | (((type) == R_MIPS_COPY) * ELF_RTYPE_CLASS_COPY)) -#define ELF_MACHINE_PLT_REL 1 -#define ELF_MACHINE_NO_REL 0 -#define ELF_MACHINE_NO_RELA 0 - /* Translate a processor specific dynamic tag to the index in l_info array. */ #define DT_MIPS(x) (DT_MIPS_##x - DT_LOPROC + DT_NUM) diff --git a/sysdeps/nios2/dl-machine.h b/sysdeps/nios2/dl-machine.h index 4de602b13d..430ca5d7ae 100644 --- a/sysdeps/nios2/dl-machine.h +++ b/sysdeps/nios2/dl-machine.h @@ -24,6 +24,8 @@ #include <string.h> #include <link.h> #include <dl-tls.h> +#include <dl-static-tls.h> +#include <dl-machine-rel.h> /* Return nonzero iff ELF header is compatible with the running host. */ static inline int @@ -200,10 +202,6 @@ _start:\n\ /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */ #define ELF_MACHINE_JMP_SLOT R_NIOS2_JUMP_SLOT -/* The Nios II never uses Elf32_Rel relocations. */ -#define ELF_MACHINE_NO_REL 1 -#define ELF_MACHINE_NO_RELA 0 - /* Fixup a PLT entry to bounce directly to the function at VALUE. */ static inline Elf32_Addr diff --git a/sysdeps/powerpc/powerpc32/dl-machine.h b/sysdeps/powerpc/powerpc32/dl-machine.h index bbef88520e..bfd8dd4fb1 100644 --- a/sysdeps/powerpc/powerpc32/dl-machine.h +++ b/sysdeps/powerpc/powerpc32/dl-machine.h @@ -25,6 +25,8 @@ #include <dl-tls.h> #include <dl-irel.h> #include <hwcapinfo.h> +#include <dl-static-tls.h> +#include <dl-machine-rel.h> /* Translate a processor specific dynamic tag to the index in l_info array. */ @@ -147,10 +149,6 @@ __elf_preferred_address(struct link_map *loader, size_t maplength, /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */ #define ELF_MACHINE_JMP_SLOT R_PPC_JMP_SLOT -/* The PowerPC never uses REL relocations. */ -#define ELF_MACHINE_NO_REL 1 -#define ELF_MACHINE_NO_RELA 0 - /* We define an initialization function to initialize HWCAP/HWCAP2 and platform data so it can be copied into the TCB later. This is called very early in _dl_sysdep_start for dynamically linked binaries. */ diff --git a/sysdeps/powerpc/powerpc64/dl-funcdesc.h b/sysdeps/powerpc/powerpc64/dl-funcdesc.h new file mode 100644 index 0000000000..b2d1f76ce0 --- /dev/null +++ b/sysdeps/powerpc/powerpc64/dl-funcdesc.h @@ -0,0 +1,34 @@ +/* PowerPC ELFv1 function descriptor definition. + Copyright (C) 2009-2021 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 + <https://www.gnu.org/licenses/>. */ + +#ifndef _DL_FUNCDESC_H +#define _DL_FUNCDESC_H + +#if _CALL_ELF != 2 +/* A PowerPC64 function descriptor. The .plt (procedure linkage + table) and .opd (official procedure descriptor) sections are + arrays of these. */ +typedef struct +{ + Elf64_Addr fd_func; + Elf64_Addr fd_toc; + Elf64_Addr fd_aux; +} Elf64_FuncDesc; +#endif + +#endif diff --git a/sysdeps/powerpc/powerpc64/dl-irel.h b/sysdeps/powerpc/powerpc64/dl-irel.h index 0e11b7ff64..aa9a2dca71 100644 --- a/sysdeps/powerpc/powerpc64/dl-irel.h +++ b/sysdeps/powerpc/powerpc64/dl-irel.h @@ -23,7 +23,7 @@ #include <stdio.h> #include <unistd.h> #include <ldsodefs.h> -#include <dl-machine.h> +#include <dl-funcdesc.h> #define ELF_MACHINE_IRELA 1 diff --git a/sysdeps/powerpc/powerpc64/dl-machine.h b/sysdeps/powerpc/powerpc64/dl-machine.h index 3ace63f502..66417f37c9 100644 --- a/sysdeps/powerpc/powerpc64/dl-machine.h +++ b/sysdeps/powerpc/powerpc64/dl-machine.h @@ -28,23 +28,14 @@ #include <sysdep.h> #include <hwcapinfo.h> #include <cpu-features.c> +#include <dl-static-tls.h> +#include <dl-funcdesc.h> +#include <dl-machine-rel.h> /* Translate a processor specific dynamic tag to the index in l_info array. */ #define DT_PPC64(x) (DT_PPC64_##x - DT_LOPROC + DT_NUM) -#if _CALL_ELF != 2 -/* A PowerPC64 function descriptor. The .plt (procedure linkage - table) and .opd (official procedure descriptor) sections are - arrays of these. */ -typedef struct -{ - Elf64_Addr fd_func; - Elf64_Addr fd_toc; - Elf64_Addr fd_aux; -} Elf64_FuncDesc; -#endif - #define ELF_MULT_MACHINES_SUPPORTED /* Return nonzero iff ELF header is compatible with the running host. */ @@ -294,10 +285,6 @@ BODY_PREFIX "_dl_start_user:\n" \ /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */ #define ELF_MACHINE_JMP_SLOT R_PPC64_JMP_SLOT -/* The PowerPC never uses REL relocations. */ -#define ELF_MACHINE_NO_REL 1 -#define ELF_MACHINE_NO_RELA 0 - /* We define an initialization function to initialize HWCAP/HWCAP2 and platform data so it can be copied into the TCB later. This is called very early in _dl_sysdep_start for dynamically linked binaries. */ diff --git a/sysdeps/riscv/dl-machine.h b/sysdeps/riscv/dl-machine.h index 343c0feb6b..a9a3f63cb4 100644 --- a/sysdeps/riscv/dl-machine.h +++ b/sysdeps/riscv/dl-machine.h @@ -26,6 +26,8 @@ #include <sys/asm.h> #include <dl-tls.h> #include <dl-irel.h> +#include <dl-static-tls.h> +#include <dl-machine-rel.h> #ifndef _RTLD_PROLOGUE # define _RTLD_PROLOGUE(entry) \ @@ -51,9 +53,6 @@ || (__WORDSIZE == 64 && (type) == R_RISCV_TLS_TPREL64))) \ | (ELF_RTYPE_CLASS_COPY * ((type) == R_RISCV_COPY))) -#define ELF_MACHINE_NO_REL 1 -#define ELF_MACHINE_NO_RELA 0 - /* Return nonzero iff ELF header is compatible with the running host. */ static inline int __attribute_used__ elf_machine_matches_host (const ElfW(Ehdr) *ehdr) diff --git a/sysdeps/s390/s390-32/dl-machine.h b/sysdeps/s390/s390-32/dl-machine.h index 96a5e80c84..ba681d1eac 100644 --- a/sysdeps/s390/s390-32/dl-machine.h +++ b/sysdeps/s390/s390-32/dl-machine.h @@ -27,6 +27,8 @@ #include <link.h> #include <sysdeps/s390/dl-procinfo.h> #include <dl-irel.h> +#include <dl-static-tls.h> +#include <dl-machine-rel.h> /* This is an older, now obsolete value. */ #define EM_S390_OLD 0xA390 @@ -277,10 +279,6 @@ _dl_start_user:\n\ /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */ #define ELF_MACHINE_JMP_SLOT R_390_JMP_SLOT -/* The S390 never uses Elf32_Rel relocations. */ -#define ELF_MACHINE_NO_REL 1 -#define ELF_MACHINE_NO_RELA 0 - /* We define an initialization functions. This is called very early in _dl_sysdep_start. */ #define DL_PLATFORM_INIT dl_platform_init () diff --git a/sysdeps/s390/s390-64/dl-machine.h b/sysdeps/s390/s390-64/dl-machine.h index c94d09b9c8..af2cffd9f9 100644 --- a/sysdeps/s390/s390-64/dl-machine.h +++ b/sysdeps/s390/s390-64/dl-machine.h @@ -28,6 +28,8 @@ #include <link.h> #include <sysdeps/s390/dl-procinfo.h> #include <dl-irel.h> +#include <dl-static-tls.h> +#include <dl-machine-rel.h> #define ELF_MACHINE_IRELATIVE R_390_IRELATIVE @@ -225,10 +227,6 @@ _dl_start_user:\n\ /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */ #define ELF_MACHINE_JMP_SLOT R_390_JMP_SLOT -/* The 64 bit S/390 never uses Elf64_Rel relocations. */ -#define ELF_MACHINE_NO_REL 1 -#define ELF_MACHINE_NO_RELA 0 - /* We define an initialization functions. This is called very early in _dl_sysdep_start. */ #define DL_PLATFORM_INIT dl_platform_init () diff --git a/sysdeps/sh/dl-machine.h b/sysdeps/sh/dl-machine.h index 0c22dfd848..d14023e749 100644 --- a/sysdeps/sh/dl-machine.h +++ b/sysdeps/sh/dl-machine.h @@ -24,6 +24,8 @@ #include <sys/param.h> #include <sysdep.h> #include <assert.h> +#include <dl-static-tls.h> +#include <dl-machine-rel.h> /* Return nonzero iff ELF header is compatible with the running host. */ static inline int __attribute__ ((unused)) @@ -251,10 +253,6 @@ elf_machine_plt_value (struct link_map *map, const Elf32_Rela *reloc, #endif /* !dl_machine_h */ -/* SH never uses Elf32_Rel relocations. */ -#define ELF_MACHINE_NO_REL 1 -#define ELF_MACHINE_NO_RELA 0 - #ifdef RESOLVE_MAP /* Perform the relocation specified by RELOC and SYM (which is fully resolved). diff --git a/sysdeps/sparc/sparc32/dl-machine.h b/sysdeps/sparc/sparc32/dl-machine.h index 6361cfae9e..78f53bc499 100644 --- a/sysdeps/sparc/sparc32/dl-machine.h +++ b/sysdeps/sparc/sparc32/dl-machine.h @@ -28,6 +28,8 @@ #include <tls.h> #include <dl-plt.h> #include <elf/dl-hwcaps.h> +#include <dl-static-tls.h> +#include <dl-machine-rel.h> /* Return nonzero iff ELF header is compatible with the running host. */ static inline int @@ -196,10 +198,6 @@ elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[], /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */ #define ELF_MACHINE_JMP_SLOT R_SPARC_JMP_SLOT -/* The SPARC never uses Elf32_Rel relocations. */ -#define ELF_MACHINE_NO_REL 1 -#define ELF_MACHINE_NO_RELA 0 - /* Undo the sub %sp, 6*4, %sp; add %sp, 22*4, %o0 below to get at the value we want in __libc_stack_end. */ #define DL_STACK_END(cookie) \ diff --git a/sysdeps/sparc/sparc64/dl-machine.h b/sysdeps/sparc/sparc64/dl-machine.h index 3fd18c6e5e..3fa79d038f 100644 --- a/sysdeps/sparc/sparc64/dl-machine.h +++ b/sysdeps/sparc/sparc64/dl-machine.h @@ -26,6 +26,8 @@ #include <ldsodefs.h> #include <sysdep.h> #include <dl-plt.h> +#include <dl-static-tls.h> +#include <dl-machine-rel.h> #define ELF64_R_TYPE_ID(info) ((info) & 0xff) #define ELF64_R_TYPE_DATA(info) ((info) >> 8) @@ -118,10 +120,6 @@ elf_machine_plt_value (struct link_map *map, const Elf64_Rela *reloc, /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */ #define ELF_MACHINE_JMP_SLOT R_SPARC_JMP_SLOT -/* The SPARC never uses Elf64_Rel relocations. */ -#define ELF_MACHINE_NO_REL 1 -#define ELF_MACHINE_NO_RELA 0 - /* Set up the loaded object described by L so its unrelocated PLT entries will jump to the on-demand fixup code in dl-runtime.c. */ diff --git a/sysdeps/unix/sysv/linux/powerpc/libc-vdso.h b/sysdeps/unix/sysv/linux/powerpc/libc-vdso.h index db388a022d..72b75d3beb 100644 --- a/sysdeps/unix/sysv/linux/powerpc/libc-vdso.h +++ b/sysdeps/unix/sysv/linux/powerpc/libc-vdso.h @@ -24,7 +24,7 @@ #include <sysdep-vdso.h> #if (defined(__PPC64__) || defined(__powerpc64__)) && _CALL_ELF != 2 -# include <dl-machine.h> +# include <dl-funcdesc.h> /* The correct solution is for _dl_vdso_vsym to return the address of the OPD for the kernel VDSO function. That address would then be stored in the __vdso_* variables and returned as the result of the IFUNC resolver function. diff --git a/sysdeps/x86_64/dl-machine.h b/sysdeps/x86_64/dl-machine.h index 90c77cfea1..94296719d4 100644 --- a/sysdeps/x86_64/dl-machine.h +++ b/sysdeps/x86_64/dl-machine.h @@ -27,6 +27,8 @@ #include <sysdep.h> #include <tls.h> #include <dl-tlsdesc.h> +#include <dl-static-tls.h> +#include <dl-machine-rel.h> /* Return nonzero iff ELF header is compatible with the running host. */ static inline int __attribute__ ((unused)) @@ -208,10 +210,6 @@ _dl_start_user:\n\ // XXX This is a work-around for a broken linker. Remove! #define ELF_MACHINE_IRELATIVE R_X86_64_IRELATIVE -/* The x86-64 never uses Elf64_Rel/Elf32_Rel relocations. */ -#define ELF_MACHINE_NO_REL 1 -#define ELF_MACHINE_NO_RELA 0 - /* We define an initialization function. This is called very early in _dl_sysdep_start. */ #define DL_PLATFORM_INIT dl_platform_init () |