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c5684fdb2b
Continuing the removal of the obsolete INTDEF / INTUSE mechanism, this patch eliminates its use for _dl_init. Since _dl_init was already declared with hidden visibility, creating a second hidden alias for it was completely pointless, so this patch replaces all uses of _dl_init_internal with plain _dl_init instead of using hidden_proto / hidden_def (which are only needed when you want a hidden alias for a non-hidden symbol; it's quite possible there are cases where they are used but don't need to be because the symbol in question is not part of the public ABI and is only used within a single library, so using attributes_hidden instead would suffice). Tested for x86_64 that installed stripped shared libraries are unchanged by the patch. [BZ #14132] * elf/dl-init.c (_dl_init): Don't use INTDEF. * sysdeps/aarch64/dl-machine.h (RTLD_START): Use _dl_init instead of _dl_init_internal. * sysdeps/alpha/dl-machine.h (RTLD_START): Likewise. * sysdeps/arm/dl-machine.h (RTLD_START): Likewise. * sysdeps/hppa/dl-machine.h (RTLD_START): Likewise. * sysdeps/i386/dl-machine.h (RTLD_START): Likewise. * sysdeps/ia64/dl-machine.h (RTLD_START): Likewise. * sysdeps/m68k/dl-machine.h (RTLD_START): Likewise. * sysdeps/microblaze/dl-machine.h (RTLD_START): Likewise. * sysdeps/mips/dl-machine.h (RTLD_START): Likewise. * sysdeps/powerpc/powerpc32/dl-start.S (_start): Likewise. * sysdeps/s390/s390-32/dl-machine.h (RTLD_START): Likewise. * sysdeps/s390/s390-64/dl-machine.h (RTLD_START): Likewise. * sysdeps/sh/dl-machine.h (RTLD_START): Likewise. * sysdeps/sparc/sparc32/dl-machine.h (RTLD_START): Likewise. * sysdeps/sparc/sparc64/dl-machine.h (RTLD_START): Likewise. * sysdeps/tile/dl-start.S (_start): Likewise. * sysdeps/x86_64/dl-machine.h (RTLD_START): Likewise. * sysdeps/x86_64/x32/dl-machine.h (RTLD_START): Likewise.
680 lines
22 KiB
C
680 lines
22 KiB
C
/* Machine-dependent ELF dynamic relocation inline functions. Sparc64 version.
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Copyright (C) 1997-2014 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef dl_machine_h
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#define dl_machine_h
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#define ELF_MACHINE_NAME "sparc64"
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#include <string.h>
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#include <sys/param.h>
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#include <ldsodefs.h>
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#include <sysdep.h>
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#include <dl-plt.h>
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#define ELF64_R_TYPE_ID(info) ((info) & 0xff)
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#define ELF64_R_TYPE_DATA(info) ((info) >> 8)
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/* Return nonzero iff ELF header is compatible with the running host. */
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static inline int
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elf_machine_matches_host (const Elf64_Ehdr *ehdr)
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{
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return ehdr->e_machine == EM_SPARCV9;
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}
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/* We have to do this because elf_machine_{dynamic,load_address} can be
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invoked from functions that have no GOT references, and thus the compiler
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has no obligation to load the PIC register. */
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#define LOAD_PIC_REG(PIC_REG) \
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do { Elf64_Addr tmp; \
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__asm("sethi %%hi(_GLOBAL_OFFSET_TABLE_-4), %1\n\t" \
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"rd %%pc, %0\n\t" \
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"add %1, %%lo(_GLOBAL_OFFSET_TABLE_+4), %1\n\t" \
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"add %0, %1, %0" \
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: "=r" (PIC_REG), "=r" (tmp)); \
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} while (0)
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/* Return the link-time address of _DYNAMIC. Conveniently, this is the
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first element of the GOT. This must be inlined in a function which
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uses global data. */
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static inline Elf64_Addr
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elf_machine_dynamic (void)
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{
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register Elf64_Addr *elf_pic_register __asm__("%l7");
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LOAD_PIC_REG (elf_pic_register);
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return *elf_pic_register;
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}
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/* Return the run-time load address of the shared object. */
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static inline Elf64_Addr
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elf_machine_load_address (void)
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{
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register Elf32_Addr *pc __asm ("%o7");
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register Elf64_Addr *got __asm ("%l7");
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__asm ("sethi %%hi(_GLOBAL_OFFSET_TABLE_-4), %1\n\t"
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"call 1f\n\t"
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" add %1, %%lo(_GLOBAL_OFFSET_TABLE_+4), %1\n\t"
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"call _DYNAMIC\n\t"
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"call _GLOBAL_OFFSET_TABLE_\n"
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"1:\tadd %1, %0, %1\n\t" : "=r" (pc), "=r" (got));
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/* got is now l_addr + _GLOBAL_OFFSET_TABLE_
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*got is _DYNAMIC
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pc[2]*4 is l_addr + _DYNAMIC - (long)pc - 8
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pc[3]*4 is l_addr + _GLOBAL_OFFSET_TABLE_ - (long)pc - 12 */
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return (Elf64_Addr) got - *got + (Elf32_Sword) ((pc[2] - pc[3]) * 4) - 4;
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}
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static inline Elf64_Addr __attribute__ ((always_inline))
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elf_machine_fixup_plt (struct link_map *map, lookup_t t,
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const Elf64_Rela *reloc,
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Elf64_Addr *reloc_addr, Elf64_Addr value)
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{
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sparc64_fixup_plt (map, reloc, reloc_addr, value + reloc->r_addend,
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reloc->r_addend, 1);
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return value;
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}
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/* Return the final value of a plt relocation. */
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static inline Elf64_Addr
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elf_machine_plt_value (struct link_map *map, const Elf64_Rela *reloc,
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Elf64_Addr value)
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{
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/* Don't add addend here, but in elf_machine_fixup_plt instead.
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value + reloc->r_addend is the value which should actually be
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stored into .plt data slot. */
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return value;
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}
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/* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry, so
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PLT entries should not be allowed to define the value.
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ELF_RTYPE_CLASS_NOCOPY iff TYPE should not be allowed to resolve to one
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of the main executable's symbols, as for a COPY reloc. */
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#define elf_machine_type_class(type) \
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((((type) == R_SPARC_JMP_SLOT \
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|| ((type) >= R_SPARC_TLS_GD_HI22 && (type) <= R_SPARC_TLS_TPOFF64)) \
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* ELF_RTYPE_CLASS_PLT) \
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| (((type) == R_SPARC_COPY) * ELF_RTYPE_CLASS_COPY))
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/* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */
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#define ELF_MACHINE_JMP_SLOT R_SPARC_JMP_SLOT
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/* The SPARC never uses Elf64_Rel relocations. */
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#define ELF_MACHINE_NO_REL 1
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#define ELF_MACHINE_NO_RELA 0
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/* Set up the loaded object described by L so its unrelocated PLT
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entries will jump to the on-demand fixup code in dl-runtime.c. */
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static inline int
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elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
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{
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if (l->l_info[DT_JMPREL] && lazy)
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{
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extern void _dl_runtime_resolve_0 (void);
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extern void _dl_runtime_resolve_1 (void);
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extern void _dl_runtime_profile_0 (void);
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extern void _dl_runtime_profile_1 (void);
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Elf64_Addr res0_addr, res1_addr;
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unsigned int *plt = (void *) D_PTR (l, l_info[DT_PLTGOT]);
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if (__builtin_expect(profile, 0))
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{
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res0_addr = (Elf64_Addr) &_dl_runtime_profile_0;
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res1_addr = (Elf64_Addr) &_dl_runtime_profile_1;
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if (GLRO(dl_profile) != NULL
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&& _dl_name_match_p (GLRO(dl_profile), l))
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GL(dl_profile_map) = l;
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}
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else
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{
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res0_addr = (Elf64_Addr) &_dl_runtime_resolve_0;
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res1_addr = (Elf64_Addr) &_dl_runtime_resolve_1;
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}
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/* PLT0 looks like:
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sethi %uhi(_dl_runtime_{resolve,profile}_0), %g4
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sethi %hi(_dl_runtime_{resolve,profile}_0), %g5
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or %g4, %ulo(_dl_runtime_{resolve,profile}_0), %g4
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or %g5, %lo(_dl_runtime_{resolve,profile}_0), %g5
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sllx %g4, 32, %g4
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add %g4, %g5, %g5
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jmpl %g5, %g4
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nop
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*/
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plt[0] = 0x09000000 | (res0_addr >> (64 - 22));
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plt[1] = 0x0b000000 | ((res0_addr >> 10) & 0x003fffff);
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plt[2] = 0x88112000 | ((res0_addr >> 32) & 0x3ff);
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plt[3] = 0x8a116000 | (res0_addr & 0x3ff);
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plt[4] = 0x89293020;
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plt[5] = 0x8a010005;
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plt[6] = 0x89c14000;
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plt[7] = 0x01000000;
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/* PLT1 looks like:
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sethi %uhi(_dl_runtime_{resolve,profile}_1), %g4
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sethi %hi(_dl_runtime_{resolve,profile}_1), %g5
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or %g4, %ulo(_dl_runtime_{resolve,profile}_1), %g4
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or %g5, %lo(_dl_runtime_{resolve,profile}_1), %g5
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sllx %g4, 32, %g4
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add %g4, %g5, %g5
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jmpl %g5, %g4
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nop
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*/
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plt[8] = 0x09000000 | (res1_addr >> (64 - 22));
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plt[9] = 0x0b000000 | ((res1_addr >> 10) & 0x003fffff);
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plt[10] = 0x88112000 | ((res1_addr >> 32) & 0x3ff);
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plt[11] = 0x8a116000 | (res1_addr & 0x3ff);
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plt[12] = 0x89293020;
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plt[13] = 0x8a010005;
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plt[14] = 0x89c14000;
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plt[15] = 0x01000000;
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/* Now put the magic cookie at the beginning of .PLT2
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Entry .PLT3 is unused by this implementation. */
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*((struct link_map **)(&plt[16])) = l;
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if (__builtin_expect (l->l_info[VALIDX(DT_GNU_PRELINKED)] != NULL, 0)
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|| __builtin_expect (l->l_info [VALIDX (DT_GNU_LIBLISTSZ)] != NULL, 0))
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{
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/* Need to reinitialize .plt to undo prelinking. */
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Elf64_Rela *rela = (Elf64_Rela *) D_PTR (l, l_info[DT_JMPREL]);
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Elf64_Rela *relaend
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= (Elf64_Rela *) ((char *) rela
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+ l->l_info[DT_PLTRELSZ]->d_un.d_val);
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/* prelink must ensure there are no R_SPARC_NONE relocs left
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in .rela.plt. */
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while (rela < relaend)
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{
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if (__builtin_expect (rela->r_addend, 0) != 0)
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{
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Elf64_Addr slot = ((rela->r_offset + l->l_addr + 0x400
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- (Elf64_Addr) plt)
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/ 0x1400) * 0x1400
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+ (Elf64_Addr) plt - 0x400;
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/* ldx [%o7 + X], %g1 */
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unsigned int first_ldx = *(unsigned int *)(slot + 12);
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Elf64_Addr ptr = slot + (first_ldx & 0xfff) + 4;
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*(Elf64_Addr *) (rela->r_offset + l->l_addr)
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= (Elf64_Addr) plt
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- (slot + ((rela->r_offset + l->l_addr - ptr) / 8) * 24
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+ 4);
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++rela;
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continue;
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}
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*(unsigned int *) (rela->r_offset + l->l_addr)
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= 0x03000000 | (rela->r_offset + l->l_addr - (Elf64_Addr) plt);
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*(unsigned int *) (rela->r_offset + l->l_addr + 4)
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= 0x30680000 | ((((Elf64_Addr) plt + 32 - rela->r_offset
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- l->l_addr - 4) >> 2) & 0x7ffff);
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__asm __volatile ("flush %0" : : "r" (rela->r_offset
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+ l->l_addr));
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__asm __volatile ("flush %0+4" : : "r" (rela->r_offset
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+ l->l_addr));
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++rela;
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}
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}
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}
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return lazy;
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}
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/* The PLT uses Elf64_Rela relocs. */
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#define elf_machine_relplt elf_machine_rela
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/* Undo the sub %sp, 6*8, %sp; add %sp, STACK_BIAS + 22*8, %o0 below
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(but w/o STACK_BIAS) to get at the value we want in __libc_stack_end. */
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#define DL_STACK_END(cookie) \
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((void *) (((long) (cookie)) - (22 - 6) * 8))
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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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#define RTLD_GOT_ADDRESS(pic_reg, reg, symbol) \
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"sethi %gdop_hix22(" #symbol "), " #reg "\n\t" \
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"xor " #reg ", %gdop_lox10(" #symbol "), " #reg "\n\t" \
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"ldx [" #pic_reg " + " #reg "], " #reg ", %gdop(" #symbol ")\n"
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#define __S1(x) #x
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#define __S(x) __S1(x)
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#define RTLD_START __asm__ ( "\n" \
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" .text\n" \
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" .global _start\n" \
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" .type _start, @function\n" \
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" .align 32\n" \
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"_start:\n" \
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" /* Make room for functions to drop their arguments on the stack. */\n" \
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" sub %sp, 6*8, %sp\n" \
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" /* Pass pointer to argument block to _dl_start. */\n" \
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" call _dl_start\n" \
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" add %sp," __S(STACK_BIAS) "+22*8,%o0\n" \
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" /* FALLTHRU */\n" \
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" .size _start, .-_start\n" \
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"\n" \
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" .global _dl_start_user\n" \
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" .type _dl_start_user, @function\n" \
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"_dl_start_user:\n" \
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" /* Load the GOT register. */\n" \
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"1: call 11f\n" \
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" sethi %hi(_GLOBAL_OFFSET_TABLE_-(1b-.)), %l7\n" \
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"11: or %l7, %lo(_GLOBAL_OFFSET_TABLE_-(1b-.)), %l7\n" \
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" add %l7, %o7, %l7\n" \
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" /* Save the user entry point address in %l0. */\n" \
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" mov %o0, %l0\n" \
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" /* See if we were run as a command with the executable file name as an\n" \
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" extra leading argument. If so, we must shift things around since we\n" \
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" must keep the stack doubleword aligned. */\n" \
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RTLD_GOT_ADDRESS(%l7, %g5, _dl_skip_args) \
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" ld [%g5], %i0\n" \
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" brz,pt %i0, 2f\n" \
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" ldx [%sp + " __S(STACK_BIAS) " + 22*8], %i5\n" \
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" /* Find out how far to shift. */\n" \
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" sub %i5, %i0, %i5\n" \
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" sllx %i0, 3, %l6\n" \
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RTLD_GOT_ADDRESS(%l7, %l4, _dl_argv) \
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" stx %i5, [%sp + " __S(STACK_BIAS) " + 22*8]\n" \
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" add %sp, " __S(STACK_BIAS) " + 23*8, %i1\n" \
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" add %i1, %l6, %i2\n" \
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" ldx [%l4], %l5\n" \
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" /* Copy down argv. */\n" \
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"12: ldx [%i2], %i3\n" \
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" add %i2, 8, %i2\n" \
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" stx %i3, [%i1]\n" \
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" brnz,pt %i3, 12b\n" \
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" add %i1, 8, %i1\n" \
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" sub %l5, %l6, %l5\n" \
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" /* Copy down envp. */\n" \
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"13: ldx [%i2], %i3\n" \
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" add %i2, 8, %i2\n" \
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" stx %i3, [%i1]\n" \
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" brnz,pt %i3, 13b\n" \
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" add %i1, 8, %i1\n" \
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" /* Copy down auxiliary table. */\n" \
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"14: ldx [%i2], %i3\n" \
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" ldx [%i2 + 8], %i4\n" \
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" add %i2, 16, %i2\n" \
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" stx %i3, [%i1]\n" \
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" stx %i4, [%i1 + 8]\n" \
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" brnz,pt %i3, 14b\n" \
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" add %i1, 16, %i1\n" \
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" stx %l5, [%l4]\n" \
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" /* %o0 = _dl_loaded, %o1 = argc, %o2 = argv, %o3 = envp. */\n" \
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"2:\t" RTLD_GOT_ADDRESS(%l7, %o0, _rtld_local) \
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" sllx %i5, 3, %o3\n" \
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" add %sp, " __S(STACK_BIAS) " + 23*8, %o2\n" \
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" add %o3, 8, %o3\n" \
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" mov %i5, %o1\n" \
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" add %o2, %o3, %o3\n" \
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" call _dl_init\n" \
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" ldx [%o0], %o0\n" \
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" /* Pass our finalizer function to the user in %g1. */\n" \
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RTLD_GOT_ADDRESS(%l7, %g1, _dl_fini) \
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" /* Jump to the user's entry point and deallocate the extra stack we got. */\n" \
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" jmp %l0\n" \
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" add %sp, 6*8, %sp\n" \
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" .size _dl_start_user, . - _dl_start_user\n" \
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" .previous\n");
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#endif /* dl_machine_h */
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#define ARCH_LA_PLTENTER sparc64_gnu_pltenter
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#define ARCH_LA_PLTEXIT sparc64_gnu_pltexit
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#ifdef RESOLVE_MAP
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/* Perform the relocation specified by RELOC and SYM (which is fully resolved).
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MAP is the object containing the reloc. */
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auto inline void
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__attribute__ ((always_inline))
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elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc,
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const Elf64_Sym *sym, const struct r_found_version *version,
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void *const reloc_addr_arg, int skip_ifunc)
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{
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Elf64_Addr *const reloc_addr = reloc_addr_arg;
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#if !defined RTLD_BOOTSTRAP && !defined RESOLVE_CONFLICT_FIND_MAP
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const Elf64_Sym *const refsym = sym;
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#endif
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Elf64_Addr value;
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const unsigned long int r_type = ELF64_R_TYPE_ID (reloc->r_info);
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#if !defined RESOLVE_CONFLICT_FIND_MAP
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struct link_map *sym_map = NULL;
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#endif
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#if !defined RTLD_BOOTSTRAP && !defined HAVE_Z_COMBRELOC
|
|
/* This is defined in rtld.c, but nowhere in the static libc.a; make the
|
|
reference weak so static programs can still link. This declaration
|
|
cannot be done when compiling rtld.c (i.e. #ifdef RTLD_BOOTSTRAP)
|
|
because rtld.c contains the common defn for _dl_rtld_map, which is
|
|
incompatible with a weak decl in the same file. */
|
|
weak_extern (_dl_rtld_map);
|
|
#endif
|
|
|
|
if (__glibc_unlikely (r_type == R_SPARC_NONE))
|
|
return;
|
|
|
|
if (__glibc_unlikely (r_type == R_SPARC_SIZE64))
|
|
{
|
|
*reloc_addr = sym->st_size + reloc->r_addend;
|
|
return;
|
|
}
|
|
|
|
#if !defined RTLD_BOOTSTRAP || !defined HAVE_Z_COMBRELOC
|
|
if (__glibc_unlikely (r_type == R_SPARC_RELATIVE))
|
|
{
|
|
# if !defined RTLD_BOOTSTRAP && !defined HAVE_Z_COMBRELOC
|
|
if (map != &_dl_rtld_map) /* Already done in rtld itself. */
|
|
# endif
|
|
*reloc_addr += map->l_addr + reloc->r_addend;
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
#ifndef RESOLVE_CONFLICT_FIND_MAP
|
|
if (__builtin_expect (ELF64_ST_BIND (sym->st_info) == STB_LOCAL, 0)
|
|
&& sym->st_shndx != SHN_UNDEF)
|
|
{
|
|
value = map->l_addr;
|
|
}
|
|
else
|
|
{
|
|
sym_map = RESOLVE_MAP (&sym, version, r_type);
|
|
value = sym_map == NULL ? 0 : sym_map->l_addr + sym->st_value;
|
|
}
|
|
#else
|
|
value = 0;
|
|
#endif
|
|
|
|
value += reloc->r_addend; /* Assume copy relocs have zero addend. */
|
|
|
|
if (sym != NULL
|
|
&& __builtin_expect (ELFW(ST_TYPE) (sym->st_info) == STT_GNU_IFUNC, 0)
|
|
&& __builtin_expect (sym->st_shndx != SHN_UNDEF, 1)
|
|
&& __builtin_expect (!skip_ifunc, 1))
|
|
value = ((Elf64_Addr (*) (int)) value) (GLRO(dl_hwcap));
|
|
|
|
switch (r_type)
|
|
{
|
|
#if !defined RTLD_BOOTSTRAP && !defined RESOLVE_CONFLICT_FIND_MAP
|
|
case R_SPARC_COPY:
|
|
if (sym == NULL)
|
|
/* This can happen in trace mode if an object could not be
|
|
found. */
|
|
break;
|
|
if (sym->st_size > refsym->st_size
|
|
|| (GLRO(dl_verbose) && sym->st_size < refsym->st_size))
|
|
{
|
|
const char *strtab;
|
|
|
|
strtab = (const void *) D_PTR (map, l_info[DT_STRTAB]);
|
|
_dl_error_printf ("\
|
|
%s: Symbol `%s' has different size in shared object, consider re-linking\n",
|
|
RTLD_PROGNAME, strtab + refsym->st_name);
|
|
}
|
|
memcpy (reloc_addr_arg, (void *) value,
|
|
MIN (sym->st_size, refsym->st_size));
|
|
break;
|
|
#endif
|
|
case R_SPARC_64:
|
|
case R_SPARC_GLOB_DAT:
|
|
*reloc_addr = value;
|
|
break;
|
|
case R_SPARC_IRELATIVE:
|
|
value = ((Elf64_Addr (*) (int)) value) (GLRO(dl_hwcap));
|
|
*reloc_addr = value;
|
|
break;
|
|
case R_SPARC_JMP_IREL:
|
|
value = ((Elf64_Addr (*) (int)) value) (GLRO(dl_hwcap));
|
|
/* 'high' is always zero, for large PLT entries the linker
|
|
emits an R_SPARC_IRELATIVE. */
|
|
#ifdef RESOLVE_CONFLICT_FIND_MAP
|
|
sparc64_fixup_plt (NULL, reloc, reloc_addr, value, 0, 0);
|
|
#else
|
|
sparc64_fixup_plt (map, reloc, reloc_addr, value, 0, 0);
|
|
#endif
|
|
break;
|
|
case R_SPARC_JMP_SLOT:
|
|
#ifdef RESOLVE_CONFLICT_FIND_MAP
|
|
/* R_SPARC_JMP_SLOT conflicts against .plt[32768+]
|
|
relocs should be turned into R_SPARC_64 relocs
|
|
in .gnu.conflict section.
|
|
r_addend non-zero does not mean it is a .plt[32768+]
|
|
reloc, instead it is the actual address of the function
|
|
to call. */
|
|
sparc64_fixup_plt (NULL, reloc, reloc_addr, value, 0, 0);
|
|
#else
|
|
sparc64_fixup_plt (map, reloc, reloc_addr, value, reloc->r_addend, 0);
|
|
#endif
|
|
break;
|
|
#ifndef RESOLVE_CONFLICT_FIND_MAP
|
|
case R_SPARC_TLS_DTPMOD64:
|
|
/* Get the information from the link map returned by the
|
|
resolv function. */
|
|
if (sym_map != NULL)
|
|
*reloc_addr = sym_map->l_tls_modid;
|
|
break;
|
|
case R_SPARC_TLS_DTPOFF64:
|
|
/* During relocation all TLS symbols are defined and used.
|
|
Therefore the offset is already correct. */
|
|
*reloc_addr = (sym == NULL ? 0 : sym->st_value) + reloc->r_addend;
|
|
break;
|
|
case R_SPARC_TLS_TPOFF64:
|
|
/* The offset is negative, forward from the thread pointer. */
|
|
/* We know the offset of object the symbol is contained in.
|
|
It is a negative value which will be added to the
|
|
thread pointer. */
|
|
if (sym != NULL)
|
|
{
|
|
CHECK_STATIC_TLS (map, sym_map);
|
|
*reloc_addr = sym->st_value - sym_map->l_tls_offset
|
|
+ reloc->r_addend;
|
|
}
|
|
break;
|
|
# ifndef RTLD_BOOTSTRAP
|
|
case R_SPARC_TLS_LE_HIX22:
|
|
case R_SPARC_TLS_LE_LOX10:
|
|
if (sym != NULL)
|
|
{
|
|
CHECK_STATIC_TLS (map, sym_map);
|
|
value = sym->st_value - sym_map->l_tls_offset
|
|
+ reloc->r_addend;
|
|
if (r_type == R_SPARC_TLS_LE_HIX22)
|
|
*(unsigned int *)reloc_addr =
|
|
((*(unsigned int *)reloc_addr & 0xffc00000)
|
|
| (((~value) >> 10) & 0x3fffff));
|
|
else
|
|
*(unsigned int *)reloc_addr =
|
|
((*(unsigned int *)reloc_addr & 0xffffe000) | (value & 0x3ff)
|
|
| 0x1c00);
|
|
}
|
|
break;
|
|
# endif
|
|
#endif
|
|
#ifndef RTLD_BOOTSTRAP
|
|
case R_SPARC_8:
|
|
*(char *) reloc_addr = value;
|
|
break;
|
|
case R_SPARC_16:
|
|
*(short *) reloc_addr = value;
|
|
break;
|
|
case R_SPARC_32:
|
|
*(unsigned int *) reloc_addr = value;
|
|
break;
|
|
case R_SPARC_DISP8:
|
|
*(char *) reloc_addr = (value - (Elf64_Addr) reloc_addr);
|
|
break;
|
|
case R_SPARC_DISP16:
|
|
*(short *) reloc_addr = (value - (Elf64_Addr) reloc_addr);
|
|
break;
|
|
case R_SPARC_DISP32:
|
|
*(unsigned int *) reloc_addr = (value - (Elf64_Addr) reloc_addr);
|
|
break;
|
|
case R_SPARC_WDISP30:
|
|
*(unsigned int *) reloc_addr =
|
|
((*(unsigned int *)reloc_addr & 0xc0000000) |
|
|
(((value - (Elf64_Addr) reloc_addr) >> 2) & 0x3fffffff));
|
|
break;
|
|
|
|
/* MEDLOW code model relocs */
|
|
case R_SPARC_LO10:
|
|
*(unsigned int *) reloc_addr =
|
|
((*(unsigned int *)reloc_addr & ~0x3ff) |
|
|
(value & 0x3ff));
|
|
break;
|
|
case R_SPARC_HI22:
|
|
*(unsigned int *) reloc_addr =
|
|
((*(unsigned int *)reloc_addr & 0xffc00000) |
|
|
((value >> 10) & 0x3fffff));
|
|
break;
|
|
case R_SPARC_OLO10:
|
|
*(unsigned int *) reloc_addr =
|
|
((*(unsigned int *)reloc_addr & ~0x1fff) |
|
|
(((value & 0x3ff) + ELF64_R_TYPE_DATA (reloc->r_info)) & 0x1fff));
|
|
break;
|
|
|
|
/* ABS34 code model reloc */
|
|
case R_SPARC_H34:
|
|
*(unsigned int *) reloc_addr =
|
|
((*(unsigned int *)reloc_addr & 0xffc00000) |
|
|
((value >> 12) & 0x3fffff));
|
|
|
|
/* MEDMID code model relocs */
|
|
case R_SPARC_H44:
|
|
*(unsigned int *) reloc_addr =
|
|
((*(unsigned int *)reloc_addr & 0xffc00000) |
|
|
((value >> 22) & 0x3fffff));
|
|
break;
|
|
case R_SPARC_M44:
|
|
*(unsigned int *) reloc_addr =
|
|
((*(unsigned int *)reloc_addr & ~0x3ff) |
|
|
((value >> 12) & 0x3ff));
|
|
break;
|
|
case R_SPARC_L44:
|
|
*(unsigned int *) reloc_addr =
|
|
((*(unsigned int *)reloc_addr & ~0xfff) |
|
|
(value & 0xfff));
|
|
break;
|
|
|
|
/* MEDANY code model relocs */
|
|
case R_SPARC_HH22:
|
|
*(unsigned int *) reloc_addr =
|
|
((*(unsigned int *)reloc_addr & 0xffc00000) |
|
|
(value >> 42));
|
|
break;
|
|
case R_SPARC_HM10:
|
|
*(unsigned int *) reloc_addr =
|
|
((*(unsigned int *)reloc_addr & ~0x3ff) |
|
|
((value >> 32) & 0x3ff));
|
|
break;
|
|
case R_SPARC_LM22:
|
|
*(unsigned int *) reloc_addr =
|
|
((*(unsigned int *)reloc_addr & 0xffc00000) |
|
|
((value >> 10) & 0x003fffff));
|
|
break;
|
|
case R_SPARC_UA16:
|
|
((unsigned char *) reloc_addr_arg) [0] = value >> 8;
|
|
((unsigned char *) reloc_addr_arg) [1] = value;
|
|
break;
|
|
case R_SPARC_UA32:
|
|
((unsigned char *) reloc_addr_arg) [0] = value >> 24;
|
|
((unsigned char *) reloc_addr_arg) [1] = value >> 16;
|
|
((unsigned char *) reloc_addr_arg) [2] = value >> 8;
|
|
((unsigned char *) reloc_addr_arg) [3] = value;
|
|
break;
|
|
case R_SPARC_UA64:
|
|
if (! ((long) reloc_addr_arg & 3))
|
|
{
|
|
/* Common in .eh_frame */
|
|
((unsigned int *) reloc_addr_arg) [0] = value >> 32;
|
|
((unsigned int *) reloc_addr_arg) [1] = value;
|
|
break;
|
|
}
|
|
((unsigned char *) reloc_addr_arg) [0] = value >> 56;
|
|
((unsigned char *) reloc_addr_arg) [1] = value >> 48;
|
|
((unsigned char *) reloc_addr_arg) [2] = value >> 40;
|
|
((unsigned char *) reloc_addr_arg) [3] = value >> 32;
|
|
((unsigned char *) reloc_addr_arg) [4] = value >> 24;
|
|
((unsigned char *) reloc_addr_arg) [5] = value >> 16;
|
|
((unsigned char *) reloc_addr_arg) [6] = value >> 8;
|
|
((unsigned char *) reloc_addr_arg) [7] = value;
|
|
break;
|
|
#endif
|
|
#if !defined RTLD_BOOTSTRAP || defined _NDEBUG
|
|
default:
|
|
_dl_reloc_bad_type (map, r_type, 0);
|
|
break;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
auto inline void
|
|
__attribute__ ((always_inline))
|
|
elf_machine_rela_relative (Elf64_Addr l_addr, const Elf64_Rela *reloc,
|
|
void *const reloc_addr_arg)
|
|
{
|
|
Elf64_Addr *const reloc_addr = reloc_addr_arg;
|
|
*reloc_addr = l_addr + reloc->r_addend;
|
|
}
|
|
|
|
auto inline void
|
|
__attribute__ ((always_inline))
|
|
elf_machine_lazy_rel (struct link_map *map,
|
|
Elf64_Addr l_addr, const Elf64_Rela *reloc,
|
|
int skip_ifunc)
|
|
{
|
|
Elf64_Addr *const reloc_addr = (void *) (l_addr + reloc->r_offset);
|
|
const unsigned int r_type = ELF64_R_TYPE (reloc->r_info);
|
|
|
|
if (__glibc_likely (r_type == R_SPARC_JMP_SLOT))
|
|
;
|
|
else if (r_type == R_SPARC_JMP_IREL
|
|
|| r_type == R_SPARC_IRELATIVE)
|
|
{
|
|
Elf64_Addr value = map->l_addr + reloc->r_addend;
|
|
if (__glibc_likely (!skip_ifunc))
|
|
value = ((Elf64_Addr (*) (int)) value) (GLRO(dl_hwcap));
|
|
if (r_type == R_SPARC_JMP_IREL)
|
|
{
|
|
/* 'high' is always zero, for large PLT entries the linker
|
|
emits an R_SPARC_IRELATIVE. */
|
|
sparc64_fixup_plt (map, reloc, reloc_addr, value, 0, 1);
|
|
}
|
|
else
|
|
*reloc_addr = value;
|
|
}
|
|
else if (r_type == R_SPARC_NONE)
|
|
;
|
|
else
|
|
_dl_reloc_bad_type (map, r_type, 1);
|
|
}
|
|
|
|
#endif /* RESOLVE_MAP */
|