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43329fe139
This brings hppa inline with all the other arches and main code where we require TLS support everywhere. That means dropping the defines USE_TLS and USE___THREAD, and dropping the binutils check (since we already have a version requirement that is new enough).
784 lines
24 KiB
C
784 lines
24 KiB
C
/* Machine-dependent ELF dynamic relocation inline functions. PA-RISC version.
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Copyright (C) 1995-2015 Free Software Foundation, Inc.
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Contributed by David Huggins-Daines <dhd@debian.org>
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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 1
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#define ELF_MACHINE_NAME "hppa"
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#include <sys/param.h>
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#include <assert.h>
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#include <string.h>
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#include <link.h>
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#include <errno.h>
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#include <dl-fptr.h>
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#include <abort-instr.h>
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#include <tls.h>
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/* These two definitions must match the definition of the stub in
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bfd/elf32-hppa.c (see plt_stub[]).
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a. Define the size of the *entire* stub we place at the end of the PLT
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table (right up against the GOT).
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b. Define the number of bytes back from the GOT to the entry point of
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the PLT stub. You see the PLT stub must be entered in the middle
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so it can depwi to find it's own address (long jump stub)
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c. Define the size of a single PLT entry so we can jump over the
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last entry to get the stub address */
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#define SIZEOF_PLT_STUB (7*4)
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#define GOT_FROM_PLT_STUB (4*4)
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#define PLT_ENTRY_SIZE (2*4)
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/* Initialize the function descriptor table before relocations */
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static inline void
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__hppa_init_bootstrap_fdesc_table (struct link_map *map)
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{
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ElfW(Addr) *boot_table;
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/* Careful: this will be called before got has been relocated... */
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ELF_MACHINE_LOAD_ADDRESS(boot_table,_dl_boot_fptr_table);
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map->l_mach.fptr_table_len = ELF_MACHINE_BOOT_FPTR_TABLE_LEN;
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map->l_mach.fptr_table = boot_table;
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}
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#define ELF_MACHINE_BEFORE_RTLD_RELOC(dynamic_info) \
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__hppa_init_bootstrap_fdesc_table (&bootstrap_map); \
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_dl_fptr_init();
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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 Elf32_Ehdr *ehdr)
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{
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return ehdr->e_machine == EM_PARISC;
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}
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/* Return the link-time address of _DYNAMIC. */
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static inline Elf32_Addr
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elf_machine_dynamic (void) __attribute__ ((const));
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static inline Elf32_Addr
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elf_machine_dynamic (void)
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{
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Elf32_Addr dynamic;
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asm ("b,l 1f,%0\n"
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" depi 0,31,2,%0\n"
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"1: addil L'_GLOBAL_OFFSET_TABLE_ - ($PIC_pcrel$0 - 8),%0\n"
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" ldw R'_GLOBAL_OFFSET_TABLE_ - ($PIC_pcrel$0 - 12)(%%r1),%0\n"
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: "=r" (dynamic) : : "r1");
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return dynamic;
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}
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/* Return the run-time load address of the shared object. */
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static inline Elf32_Addr
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elf_machine_load_address (void) __attribute__ ((const));
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static inline Elf32_Addr
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elf_machine_load_address (void)
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{
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Elf32_Addr dynamic;
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asm (
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" b,l 1f,%0\n"
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" depi 0,31,2,%0\n"
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"1: addil L'_DYNAMIC - ($PIC_pcrel$0 - 8),%0\n"
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" ldo R'_DYNAMIC - ($PIC_pcrel$0 - 12)(%%r1),%0\n"
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: "=r" (dynamic) : : "r1");
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return dynamic - elf_machine_dynamic ();
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}
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/* Fixup a PLT entry to bounce directly to the function at VALUE. */
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static inline struct fdesc __attribute__ ((always_inline))
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elf_machine_fixup_plt (struct link_map *map, lookup_t t,
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const Elf32_Rela *reloc,
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Elf32_Addr *reloc_addr, struct fdesc value)
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{
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volatile Elf32_Addr *rfdesc = reloc_addr;
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/* map is the link_map for the caller, t is the link_map for the object
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being called */
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rfdesc[1] = value.gp;
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/* Need to ensure that the gp is visible before the code
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entry point is updated */
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rfdesc[0] = value.ip;
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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 struct fdesc
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elf_machine_plt_value (struct link_map *map, const Elf32_Rela *reloc,
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struct fdesc value)
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{
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/* We are rela only, return a function descriptor as a plt entry. */
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return (struct fdesc) { value.ip + reloc->r_addend, value.gp };
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}
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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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Elf32_Addr *got = NULL;
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Elf32_Addr l_addr, iplt, jmprel, end_jmprel, r_type, r_sym;
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const Elf32_Rela *reloc;
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struct fdesc *fptr;
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static union {
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unsigned char c[8];
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Elf32_Addr i[2];
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} sig = {{0x00,0xc0,0xff,0xee, 0xde,0xad,0xbe,0xef}};
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/* If we don't have a PLT we can just skip all this... */
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if (__builtin_expect (l->l_info[DT_JMPREL] == NULL,0))
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return lazy;
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/* All paths use these values */
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l_addr = l->l_addr;
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jmprel = D_PTR(l, l_info[DT_JMPREL]);
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end_jmprel = jmprel + l->l_info[DT_PLTRELSZ]->d_un.d_val;
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extern void _dl_runtime_resolve (void);
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extern void _dl_runtime_profile (void);
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/* Linking lazily */
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if (lazy)
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{
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/* FIXME: Search for the got, but backwards through the relocs, technically we should
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find it on the first try. However, assuming the relocs got out of order the
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routine is made a bit more robust by searching them all in case of failure. */
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for (iplt = (end_jmprel - sizeof(Elf32_Rela)); iplt >= jmprel; iplt -= sizeof (Elf32_Rela))
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{
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reloc = (const Elf32_Rela *) iplt;
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r_type = ELF32_R_TYPE (reloc->r_info);
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r_sym = ELF32_R_SYM (reloc->r_info);
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got = (Elf32_Addr *) (reloc->r_offset + l_addr + PLT_ENTRY_SIZE + SIZEOF_PLT_STUB);
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/* If we aren't an IPLT, and we aren't NONE then it's a bad reloc */
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if (__builtin_expect (r_type != R_PARISC_IPLT, 0))
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{
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if (__builtin_expect (r_type != R_PARISC_NONE, 0))
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_dl_reloc_bad_type (l, r_type, 1);
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continue;
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}
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/* Check for the plt_stub that binutils placed here for us
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to use with _dl_runtime_resolve */
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if (got[-2] != sig.i[0] || got[-1] != sig.i[1])
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{
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got = NULL; /* Not the stub... keep looking */
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}
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else
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{
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/* Found the GOT! */
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register Elf32_Addr ltp __asm__ ("%r19");
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/* Identify this shared object. Second entry in the got. */
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got[1] = (Elf32_Addr) l;
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/* This function will be called to perform the relocation. */
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if (__builtin_expect (!profile, 1))
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{
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/* If a static application called us, then _dl_runtime_resolve is not
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a function descriptor, but the *real* address of the function... */
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if((unsigned long) &_dl_runtime_resolve & 3)
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{
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got[-2] = (Elf32_Addr) ((struct fdesc *)
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((unsigned long) &_dl_runtime_resolve & ~3))->ip;
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}
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else
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{
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/* Static executable! */
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got[-2] = (Elf32_Addr) &_dl_runtime_resolve;
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}
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}
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else
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{
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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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{
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/* This is the object we are looking for. Say that
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we really want profiling and the timers are
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started. */
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GL(dl_profile_map) = l;
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}
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if((unsigned long) &_dl_runtime_profile & 3)
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{
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got[-2] = (Elf32_Addr) ((struct fdesc *)
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((unsigned long) &_dl_runtime_profile & ~3))->ip;
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}
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else
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{
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/* Static executable */
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got[-2] = (Elf32_Addr) &_dl_runtime_profile;
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}
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}
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/* Plunk in the gp of this function descriptor so we
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can make the call to _dl_runtime_xxxxxx */
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got[-1] = ltp;
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break;
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/* Done looking for the GOT, and stub is setup */
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} /* else we found the GOT */
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} /* for, walk the relocs backwards */
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if(!got)
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return 0; /* No lazy linking for you! */
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/* Process all the relocs, now that we know the GOT... */
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for (iplt = jmprel; iplt < end_jmprel; iplt += sizeof (Elf32_Rela))
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{
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reloc = (const Elf32_Rela *) iplt;
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r_type = ELF32_R_TYPE (reloc->r_info);
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r_sym = ELF32_R_SYM (reloc->r_info);
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if (__builtin_expect (r_type == R_PARISC_IPLT, 1))
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{
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fptr = (struct fdesc *) (reloc->r_offset + l_addr);
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if (r_sym != 0)
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{
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/* Relocate the pointer to the stub. */
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fptr->ip = (Elf32_Addr) got - GOT_FROM_PLT_STUB;
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/* Instead of the LTP value, we put the reloc offset
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here. The trampoline code will load the proper
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LTP and pass the reloc offset to the fixup
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function. */
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fptr->gp = iplt - jmprel;
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} /* r_sym != 0 */
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else
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{
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/* Relocate this *ABS* entry. */
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fptr->ip = reloc->r_addend + l_addr;
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fptr->gp = D_PTR (l, l_info[DT_PLTGOT]);
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}
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} /* r_type == R_PARISC_IPLT */
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} /* for all the relocations */
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} /* if lazy */
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else
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{
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for (iplt = jmprel; iplt < end_jmprel; iplt += sizeof (Elf32_Rela))
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{
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reloc = (const Elf32_Rela *) iplt;
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r_type = ELF32_R_TYPE (reloc->r_info);
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r_sym = ELF32_R_SYM (reloc->r_info);
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if (__builtin_expect ((r_type == R_PARISC_IPLT) && (r_sym == 0), 1))
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{
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fptr = (struct fdesc *) (reloc->r_offset + l_addr);
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/* Relocate this *ABS* entry, set only the gp, the rest is set later
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when elf_machine_rela_relative is called (WITHOUT the linkmap) */
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fptr->gp = D_PTR (l, l_info[DT_PLTGOT]);
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} /* r_type == R_PARISC_IPLT */
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} /* for all the relocations */
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}
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return lazy;
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}
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/* Names of the architecture-specific auditing callback functions. */
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#define ARCH_LA_PLTENTER hppa_gnu_pltenter
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#define ARCH_LA_PLTEXIT hppa_gnu_pltexit
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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_START \
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/* Set up dp for any non-PIC lib constructors that may be called. */ \
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static struct link_map * __attribute__((used)) \
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set_dp (struct link_map *map) \
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{ \
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register Elf32_Addr dp asm ("%r27"); \
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dp = D_PTR (map, l_info[DT_PLTGOT]); \
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asm volatile ("" : : "r" (dp)); \
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return map; \
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} \
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\
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asm ( \
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" .text\n" \
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" .globl _start\n" \
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" .type _start,@function\n" \
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"_start:\n" \
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/* The kernel does not give us an initial stack frame. */ \
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" ldo 64(%sp),%sp\n" \
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/* Save the relevant arguments (yes, those are the correct \
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registers, the kernel is weird) in their stack slots. */ \
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" stw %r25,-40(%sp)\n" /* argc */ \
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" stw %r24,-44(%sp)\n" /* argv */ \
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\
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/* We need the LTP, and we need it now. \
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$PIC_pcrel$0 points 8 bytes past the current instruction, \
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just like a branch reloc. This sequence gets us the \
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runtime address of _DYNAMIC. */ \
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" bl 0f,%r19\n" \
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" depi 0,31,2,%r19\n" /* clear priviledge bits */ \
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"0: addil L'_DYNAMIC - ($PIC_pcrel$0 - 8),%r19\n" \
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" ldo R'_DYNAMIC - ($PIC_pcrel$0 - 12)(%r1),%r26\n" \
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\
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/* The link time address is stored in the first entry of the \
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GOT. */ \
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" addil L'_GLOBAL_OFFSET_TABLE_ - ($PIC_pcrel$0 - 16),%r19\n" \
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" ldw R'_GLOBAL_OFFSET_TABLE_ - ($PIC_pcrel$0 - 20)(%r1),%r20\n" \
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\
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" sub %r26,%r20,%r20\n" /* Calculate load offset */ \
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\
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/* Rummage through the dynamic entries, looking for \
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DT_PLTGOT. */ \
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" ldw,ma 8(%r26),%r19\n" \
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"1: cmpib,=,n 3,%r19,2f\n" /* tag == DT_PLTGOT? */ \
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" cmpib,<>,n 0,%r19,1b\n" \
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" ldw,ma 8(%r26),%r19\n" \
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\
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/* Uh oh! We didn't find one. Abort. */ \
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" iitlbp %r0,(%sr0,%r0)\n" \
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\
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"2: ldw -4(%r26),%r19\n" /* Found it, load value. */ \
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" add %r19,%r20,%r19\n" /* And add the load offset. */ \
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\
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/* Our initial stack layout is rather different from everyone \
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else's due to the unique PA-RISC ABI. As far as I know it \
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looks like this: \
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\
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----------------------------------- (this frame created above) \
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| 32 bytes of magic | \
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|---------------------------------| \
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| 32 bytes argument/sp save area | \
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|---------------------------------| ((current->mm->env_end) \
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| N bytes of slack | + 63 & ~63) \
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|---------------------------------| \
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| envvar and arg strings | \
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|---------------------------------| \
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| ELF auxiliary info | \
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| (up to 28 words) | \
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|---------------------------------| \
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| Environment variable pointers | \
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| upwards to NULL | \
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|---------------------------------| \
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| Argument pointers | \
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| upwards to NULL | \
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|---------------------------------| \
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| argc (1 word) | \
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----------------------------------- \
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\
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So, obviously, we can't just pass %sp to _dl_start. That's \
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okay, argv-4 will do just fine. \
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\
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The pleasant part of this is that if we need to skip \
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arguments we can just decrement argc and move argv, because \
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the stack pointer is utterly unrelated to the location of \
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the environment and argument vectors. */ \
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\
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/* This is always within range so we'll be okay. */ \
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" bl _dl_start,%rp\n" \
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" ldo -4(%r24),%r26\n" \
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\
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" .globl _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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/* Save the entry point in %r3. */ \
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" copy %ret0,%r3\n" \
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\
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/* Remember the lowest stack address. */ \
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" addil LT'__libc_stack_end,%r19\n" \
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" ldw RT'__libc_stack_end(%r1),%r20\n" \
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" stw %sp,0(%r20)\n" \
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\
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/* See if we were called as a command with the executable file \
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name as an extra leading argument. */ \
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" addil LT'_dl_skip_args,%r19\n" \
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" ldw RT'_dl_skip_args(%r1),%r20\n" \
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" ldw 0(%r20),%r20\n" \
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\
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" ldw -40(%sp),%r25\n" /* argc */ \
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" comib,= 0,%r20,.Lnofix\n" /* FIXME: Mispredicted branch */\
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" ldw -44(%sp),%r24\n" /* argv (delay slot) */ \
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\
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" sub %r25,%r20,%r25\n" \
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" stw %r25,-40(%sp)\n" \
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" sh2add %r20,%r24,%r24\n" \
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" stw %r24,-44(%sp)\n" \
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\
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".Lnofix:\n" \
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" addil LT'_rtld_local,%r19\n" \
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" ldw RT'_rtld_local(%r1),%r26\n" \
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" bl set_dp, %r2\n" \
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" ldw 0(%r26),%r26\n" \
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\
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/* Call _dl_init(_dl_loaded, argc, argv, envp). */ \
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" copy %r28,%r26\n" \
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\
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/* envp = argv + argc + 1 */ \
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" sh2add %r25,%r24,%r23\n" \
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" bl _dl_init,%r2\n" \
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" ldo 4(%r23),%r23\n" /* delay slot */ \
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\
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/* Reload argc, argv to the registers start.S expects. */ \
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" ldw -40(%sp),%r25\n" \
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" ldw -44(%sp),%r24\n" \
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\
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/* _dl_fini is a local function in the loader, so we construct \
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a false OPD here and pass this to the application. */ \
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/* FIXME: Should be able to use P%, and LR RR to have the \
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the linker construct a proper OPD. */ \
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" .section .data\n" \
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"__dl_fini_plabel:\n" \
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" .word _dl_fini\n" \
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" .word 0xdeadbeef\n" \
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" .previous\n" \
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\
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/* %r3 contains a function pointer, we need to mask out the \
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lower bits and load the gp and jump address. */ \
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" depi 0,31,2,%r3\n" \
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" ldw 0(%r3),%r2\n" \
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" addil LT'__dl_fini_plabel,%r19\n" \
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" ldw RT'__dl_fini_plabel(%r1),%r23\n" \
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" stw %r19,4(%r23)\n" \
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" ldw 4(%r3),%r19\n" /* load the object's gp */ \
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" bv %r0(%r2)\n" \
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" depi 2,31,2,%r23\n" /* delay slot */ \
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|
);
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/* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry or
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a TLS variable, so references should not be allowed to define the value.
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ELF_RTYPE_CLASS_COPY 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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#if !defined RTLD_BOOTSTRAP
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# define elf_machine_type_class(type) \
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((((type) == R_PARISC_IPLT \
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|| (type) == R_PARISC_EPLT \
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|| (type) == R_PARISC_TLS_DTPMOD32 \
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|
|| (type) == R_PARISC_TLS_DTPOFF32 \
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|| (type) == R_PARISC_TLS_TPREL32) \
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* ELF_RTYPE_CLASS_PLT) \
|
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| (((type) == R_PARISC_COPY) * ELF_RTYPE_CLASS_COPY))
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|
#else
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#define elf_machine_type_class(type) \
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((((type) == R_PARISC_IPLT \
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|| (type) == R_PARISC_EPLT) \
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* ELF_RTYPE_CLASS_PLT) \
|
|
| (((type) == R_PARISC_COPY) * ELF_RTYPE_CLASS_COPY))
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|
#endif
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|
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|
/* Used by the runtime in fixup to figure out if reloc is *really* PLT */
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|
#define ELF_MACHINE_JMP_SLOT R_PARISC_IPLT
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#define ELF_MACHINE_SIZEOF_JMP_SLOT PLT_ENTRY_SIZE
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|
|
|
/* We only use RELA. */
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|
#define ELF_MACHINE_NO_REL 1
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|
#define ELF_MACHINE_NO_RELA 0
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|
|
/* Return the address of the entry point. */
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|
#define ELF_MACHINE_START_ADDRESS(map, start) \
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|
({ \
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|
ElfW(Addr) addr; \
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DL_DT_FUNCTION_ADDRESS(map, start, static, addr) \
|
|
addr; \
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|
})
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|
|
|
/* We define an initialization functions. This is called very early in
|
|
* _dl_sysdep_start. */
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|
#define DL_PLATFORM_INIT dl_platform_init ()
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|
static inline void __attribute__ ((unused))
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|
dl_platform_init (void)
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|
{
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if (GLRO(dl_platform) != NULL && *GLRO(dl_platform) == '\0')
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|
/* Avoid an empty string which would disturb us. */
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|
GLRO(dl_platform) = NULL;
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}
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|
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#endif /* !dl_machine_h */
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|
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/* These are only actually used where RESOLVE_MAP is defined, anyway. */
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#ifdef RESOLVE_MAP
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#define reassemble_21(as21) \
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( (((as21) & 0x100000) >> 20) \
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| (((as21) & 0x0ffe00) >> 8) \
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| (((as21) & 0x000180) << 7) \
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| (((as21) & 0x00007c) << 14) \
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| (((as21) & 0x000003) << 12))
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|
|
|
#define reassemble_14(as14) \
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|
( (((as14) & 0x1fff) << 1) \
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| (((as14) & 0x2000) >> 13))
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auto void __attribute__((always_inline))
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elf_machine_rela (struct link_map *map,
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const Elf32_Rela *reloc,
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const Elf32_Sym *sym,
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|
const struct r_found_version *version,
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|
void *const reloc_addr_arg,
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|
int skip_ifunc)
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|
{
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|
Elf32_Addr *const reloc_addr = reloc_addr_arg;
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const Elf32_Sym *const refsym = sym;
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|
unsigned long const r_type = ELF32_R_TYPE (reloc->r_info);
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|
struct link_map *sym_map;
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|
Elf32_Addr value;
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|
|
|
# if !defined RTLD_BOOTSTRAP && !defined HAVE_Z_COMBRELOC && !defined SHARED
|
|
/* 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)
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|
because rtld.c contains the common defn for _dl_rtld_map, which is
|
|
incompatible with a weak decl in the same file. */
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|
weak_extern (GL(dl_rtld_map));
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|
# endif
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|
|
/* RESOLVE_MAP will return a null value for undefined syms, and
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|
non-null for all other syms. In particular, relocs with no
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|
symbol (symbol index of zero), also called *ABS* relocs, will be
|
|
resolved to MAP. (The first entry in a symbol table is all
|
|
zeros, and an all zero Elf32_Sym has a binding of STB_LOCAL.)
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|
See RESOLVE_MAP definition in elf/dl-reloc.c */
|
|
# ifdef RTLD_BOOTSTRAP
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|
/* RESOLVE_MAP in rtld.c doesn't have the local sym test. */
|
|
sym_map = (ELF32_ST_BIND (sym->st_info) != STB_LOCAL
|
|
? RESOLVE_MAP (&sym, version, r_type) : map);
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|
# else
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|
sym_map = RESOLVE_MAP (&sym, version, r_type);
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|
# endif
|
|
|
|
if (sym_map)
|
|
{
|
|
value = sym ? sym_map->l_addr + sym->st_value : 0;
|
|
value += reloc->r_addend;
|
|
}
|
|
else
|
|
value = 0;
|
|
|
|
switch (r_type)
|
|
{
|
|
case R_PARISC_DIR32:
|
|
/* .eh_frame can have unaligned relocs. */
|
|
if ((unsigned long) reloc_addr_arg & 3)
|
|
{
|
|
char *rel_addr = (char *) reloc_addr_arg;
|
|
rel_addr[0] = value >> 24;
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|
rel_addr[1] = value >> 16;
|
|
rel_addr[2] = value >> 8;
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|
rel_addr[3] = value;
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|
return;
|
|
}
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|
break;
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|
|
|
case R_PARISC_DIR21L:
|
|
{
|
|
unsigned int insn = *(unsigned int *)reloc_addr;
|
|
value = sym_map->l_addr + sym->st_value
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|
+ ((reloc->r_addend + 0x1000) & -0x2000);
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|
value = value >> 11;
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|
insn = (insn &~ 0x1fffff) | reassemble_21 (value);
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|
*(unsigned int *)reloc_addr = insn;
|
|
}
|
|
return;
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|
|
|
case R_PARISC_DIR14R:
|
|
{
|
|
unsigned int insn = *(unsigned int *)reloc_addr;
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|
value = ((sym_map->l_addr + sym->st_value) & 0x7ff)
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|
+ (((reloc->r_addend & 0x1fff) ^ 0x1000) - 0x1000);
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|
insn = (insn &~ 0x3fff) | reassemble_14 (value);
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|
*(unsigned int *)reloc_addr = insn;
|
|
}
|
|
return;
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|
|
|
case R_PARISC_PLABEL32:
|
|
/* Easy rule: If there is a symbol and it is global, then we
|
|
need to make a dynamic function descriptor. Otherwise we
|
|
have the address of a PLT slot for a local symbol which we
|
|
know to be unique. */
|
|
if (sym == NULL
|
|
|| sym_map == NULL
|
|
|| ELF32_ST_BIND (sym->st_info) == STB_LOCAL)
|
|
{
|
|
break;
|
|
}
|
|
/* Set bit 30 to indicate to $$dyncall that this is a PLABEL.
|
|
We have to do this outside of the generic function descriptor
|
|
code, since it doesn't know about our requirement for setting
|
|
protection bits */
|
|
value = (Elf32_Addr)((unsigned int)_dl_make_fptr (sym_map, sym, value) | 2);
|
|
break;
|
|
|
|
case R_PARISC_PLABEL21L:
|
|
case R_PARISC_PLABEL14R:
|
|
{
|
|
unsigned int insn = *(unsigned int *)reloc_addr;
|
|
|
|
if (__builtin_expect (sym == NULL, 0))
|
|
break;
|
|
|
|
value = (Elf32_Addr)((unsigned int)_dl_make_fptr (sym_map, sym, value) | 2);
|
|
|
|
if (r_type == R_PARISC_PLABEL21L)
|
|
{
|
|
value >>= 11;
|
|
insn = (insn &~ 0x1fffff) | reassemble_21 (value);
|
|
}
|
|
else
|
|
{
|
|
value &= 0x7ff;
|
|
insn = (insn &~ 0x3fff) | reassemble_14 (value);
|
|
}
|
|
|
|
*(unsigned int *)reloc_addr = insn;
|
|
}
|
|
return;
|
|
|
|
case R_PARISC_IPLT:
|
|
if (__builtin_expect (sym_map != NULL, 1))
|
|
{
|
|
elf_machine_fixup_plt (NULL, sym_map, reloc, reloc_addr,
|
|
DL_FIXUP_MAKE_VALUE(sym_map, value));
|
|
}
|
|
else
|
|
{
|
|
/* If we get here, it's a (weak) undefined sym. */
|
|
elf_machine_fixup_plt (NULL, map, reloc, reloc_addr,
|
|
DL_FIXUP_MAKE_VALUE(map, value));
|
|
}
|
|
return;
|
|
|
|
case R_PARISC_COPY:
|
|
if (__builtin_expect (sym == NULL, 0))
|
|
/* This can happen in trace mode if an object could not be
|
|
found. */
|
|
break;
|
|
if (__builtin_expect (sym->st_size > refsym->st_size, 0)
|
|
|| (__builtin_expect (sym->st_size < refsym->st_size, 0)
|
|
&& __builtin_expect (GLRO(dl_verbose), 0)))
|
|
{
|
|
const char *strtab;
|
|
|
|
strtab = (const char *) 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));
|
|
return;
|
|
|
|
#if !defined RTLD_BOOTSTRAP
|
|
case R_PARISC_TLS_DTPMOD32:
|
|
value = sym_map->l_tls_modid;
|
|
break;
|
|
|
|
case R_PARISC_TLS_DTPOFF32:
|
|
/* During relocation all TLS symbols are defined and used.
|
|
Therefore the offset is already correct. */
|
|
if (sym != NULL)
|
|
*reloc_addr = sym->st_value;
|
|
return;
|
|
|
|
case R_PARISC_TLS_TPREL32:
|
|
/* The offset is negative, forward from the thread pointer */
|
|
if (sym != NULL)
|
|
{
|
|
CHECK_STATIC_TLS (map, sym_map);
|
|
value = sym_map->l_tls_offset + sym->st_value + reloc->r_addend;
|
|
}
|
|
break;
|
|
#endif /* use TLS */
|
|
|
|
case R_PARISC_NONE: /* Alright, Wilbur. */
|
|
return;
|
|
|
|
default:
|
|
_dl_reloc_bad_type (map, r_type, 0);
|
|
}
|
|
|
|
*reloc_addr = value;
|
|
}
|
|
|
|
/* hppa doesn't have an R_PARISC_RELATIVE reloc, but uses relocs with
|
|
ELF32_R_SYM (info) == 0 for a similar purpose. */
|
|
auto void __attribute__((always_inline))
|
|
elf_machine_rela_relative (Elf32_Addr l_addr,
|
|
const Elf32_Rela *reloc,
|
|
void *const reloc_addr_arg)
|
|
{
|
|
unsigned long const r_type = ELF32_R_TYPE (reloc->r_info);
|
|
Elf32_Addr *const reloc_addr = reloc_addr_arg;
|
|
static char msgbuf[] = { "Unknown" };
|
|
struct link_map map;
|
|
Elf32_Addr value;
|
|
|
|
value = l_addr + reloc->r_addend;
|
|
|
|
if (ELF32_R_SYM (reloc->r_info) != 0){
|
|
_dl_error_printf ("%s: In elf_machine_rela_relative "
|
|
"ELF32_R_SYM (reloc->r_info) != 0. Aborting.",
|
|
RTLD_PROGNAME);
|
|
ABORT_INSTRUCTION; /* Crash. */
|
|
}
|
|
|
|
switch (r_type)
|
|
{
|
|
case R_PARISC_DIR32:
|
|
/* .eh_frame can have unaligned relocs. */
|
|
if ((unsigned long) reloc_addr_arg & 3)
|
|
{
|
|
char *rel_addr = (char *) reloc_addr_arg;
|
|
rel_addr[0] = value >> 24;
|
|
rel_addr[1] = value >> 16;
|
|
rel_addr[2] = value >> 8;
|
|
rel_addr[3] = value;
|
|
return;
|
|
}
|
|
break;
|
|
|
|
case R_PARISC_PLABEL32:
|
|
break;
|
|
|
|
case R_PARISC_IPLT: /* elf_machine_runtime_setup already set gp */
|
|
break;
|
|
|
|
case R_PARISC_NONE:
|
|
return;
|
|
|
|
default: /* Bad reloc, map unknown (really it's the current map) */
|
|
map.l_name = msgbuf;
|
|
_dl_reloc_bad_type (&map, r_type, 0);
|
|
return;
|
|
}
|
|
|
|
*reloc_addr = value;
|
|
}
|
|
|
|
auto void __attribute__((always_inline))
|
|
elf_machine_lazy_rel (struct link_map *map,
|
|
Elf32_Addr l_addr, const Elf32_Rela *reloc,
|
|
int skip_ifunc)
|
|
{
|
|
/* We don't have anything to do here. elf_machine_runtime_setup has
|
|
done all the relocs already. */
|
|
}
|
|
|
|
#endif /* RESOLVE_MAP */
|