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e438a46845
2002-05-26 Bruno Haible <bruno@clisp.org> * iconv/loop.c (STANDARD_FROM_LOOP_ERR_HANDLER): New macro. (STANDARD_TO_LOOP_ERR_HANDLER): Renamed from STANDARD_ERR_HANDLER. All callers changed. * iconv/gconv_simple.c (ascii_internal_loop): For error handling use STANDARD_FROM_LOOP_ERR_HANDLER. (utf8_internal_loop): Likewise. (ucs2_internal_loop): Likewise. (internal_ucs2_loop): Perform error handling like in STANDARD_FROM_LOOP_ERR_HANDLER. * iconvdata/unicode.c (BODY for TO_LOOP): Perform error handling like in STANDARD_FROM_LOOP_ERR_HANDLER. (BODY for FROM_LOOP): Use STANDARD_FROM_LOOP_ERR_HANDLER for error handling. * iconvdata/utf-16.c (BODY for TO_LOOP): Perform error handling like in STANDARD_FROM_LOOP_ERR_HANDLER. (BODY for FROM_LOOP): Use STANDARD_FROM_LOOP_ERR_HANDLER for error handling. * iconvdata/utf-32.c (BODY for TO_LOOP): Perform error handling like in STANDARD_FROM_LOOP_ERR_HANDLER. (BODY for FROM_LOOP): Use STANDARD_FROM_LOOP_ERR_HANDLER for error handling. * iconvdata/big5.c (BODY for FROM_LOOP): For error handling use STANDARD_FROM_LOOP_ERR_HANDLER. * iconvdata/iso-2022-jp.c (BODY for FROM_LOOP): Likewise. * iconvdata/8bit-gap.c (BODY for FROM_LOOP): Likewise. * iconvdata/8bit-generic.c (BODY for FROM_LOOP): Likewise. * iconvdata/ansi_x3.110.c (BODY for FROM_LOOP): Likewise. * iconvdata/armscii-8.c (BODY for FROM_LOOP): Likewise. * iconvdata/cp1255.c (BODY for FROM_LOOP): Likewise. * iconvdata/cp1258.c (BODY for FROM_LOOP): Likewise. * iconvdata/euc-cn.c (BODY for FROM_LOOP): Likewise. * iconvdata/euc-jisx0213.c (BODY for FROM_LOOP): Likewise. * iconvdata/euc-jp.c (BODY for FROM_LOOP): Likewise. * iconvdata/euc-kr.c (BODY for FROM_LOOP): Likewise. * iconvdata/euc-tw.c (BODY for FROM_LOOP): Likewise. * iconvdata/big5hkscs.c (BODY for FROM_LOOP): Likewise. * iconvdata/gb18030.c (BODY for FROM_LOOP): Likewise. * iconvdata/gbk.c (BODY for FROM_LOOP): Likewise. * iconvdata/iso-2022-cn-ext.c (BODY for FROM_LOOP): Likewise. * iconvdata/iso-2022-cn.c (BODY for FROM_LOOP): Likewise. * iconvdata/iso-2022-jp-3.c (BODY for FROM_LOOP): Likewise. * iconvdata/iso-2022-kr.c (BODY for FROM_LOOP): Likewise. * iconvdata/iso646.c (BODY for FROM_LOOP): Likewise. * iconvdata/iso_6937-2.c (BODY for FROM_LOOP): Likewise. * iconvdata/iso_6937.c (BODY for FROM_LOOP): Likewise. * iconvdata/johab.c (BODY for FROM_LOOP): Likewise. * iconvdata/shift_jisx0213.c (BODY for FROM_LOOP): Likewise. * iconvdata/sjis.c (BODY for FROM_LOOP): Likewise. * iconvdata/t.61.c (BODY for FROM_LOOP): Likewise. * iconvdata/uhc.c (BODY for FROM_LOOP): Likewise. * iconvdata/utf-7.c (BODY for FROM_LOOP): Likewise. * iconvdata/gbbig5.c (BODY for FROM_LOOP): Likewise. When ignoring an error, still set result = __GCONV_ILLEGAL_INPUT. (BODY for TO_LOOP): Likewise. * iconvdata/ibm930.c (BODY for FROM_LOOP): For error handling use STANDARD_FROM_LOOP_ERR_HANDLER. (BODY for TO_LOOP): Here use STANDARD_TO_LOOP_ERR_HANDLER. * iconvdata/ibm932.c: Include <dlfcn.h> and <stdint.h>. (BODY for FROM_LOOP): Use STANDARD_FROM_LOOP_ERR_HANDLER for error handling. (BODY for TO_LOOP): Here use STANDARD_TO_LOOP_ERR_HANDLER. * iconvdata/ibm933.c (BODY for FROM_LOOP): For error handling use STANDARD_FROM_LOOP_ERR_HANDLER. (BODY for TO_LOOP): Here use STANDARD_TO_LOOP_ERR_HANDLER. * iconvdata/ibm935.c (BODY for FROM_LOOP): For error handling use STANDARD_FROM_LOOP_ERR_HANDLER. (BODY for TO_LOOP): Here use STANDARD_TO_LOOP_ERR_HANDLER. * iconvdata/ibm937.c (BODY for FROM_LOOP): For error handling use STANDARD_FROM_LOOP_ERR_HANDLER. (BODY for TO_LOOP): Here use STANDARD_TO_LOOP_ERR_HANDLER. * iconvdata/ibm939.c (BODY for FROM_LOOP): For error handling use STANDARD_FROM_LOOP_ERR_HANDLER. (BODY for TO_LOOP): Here use STANDARD_TO_LOOP_ERR_HANDLER. * iconvdata/ibm943.c: Include <dlfcn.h> and <stdint.h>. (BODY for FROM_LOOP): Use STANDARD_FROM_LOOP_ERR_HANDLER for error handling. (BODY for TO_LOOP): Here use STANDARD_TO_LOOP_ERR_HANDLER. * iconvdata/gbgbk.c (BODY for FROM_LOOP): Update. * iconvdata/iso8859-1.c (BODY for TO_LOOP): Update. * iconvdata/tcvn5712-1.c (BODY for TO_LOOP): Update. 2002-06-28 Kaz Kojima <kkojima@rr.iij4u.or.jp> * sysdeps/sh/dl-machine.h (elf_machine_load_address): Use local labels in assembler instructions.
659 lines
18 KiB
C
659 lines
18 KiB
C
/* Machine-dependent ELF dynamic relocation inline functions. SH version.
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Copyright (C) 1999, 2000, 2001, 2002 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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef dl_machine_h
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#define dl_machine_h
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/* Only dummy. This doesn't work. */
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#define ELF_MACHINE_NAME "SH"
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#include <sys/param.h>
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#include <assert.h>
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/* Return nonzero iff ELF header is compatible with the running host. */
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static inline int __attribute__ ((unused))
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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_SH;
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}
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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 Elf32_Addr __attribute__ ((unused))
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elf_machine_dynamic (void)
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{
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register Elf32_Addr *got;
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asm ("mov r12,%0" :"=r" (got));
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return *got;
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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 __attribute__ ((unused))
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elf_machine_load_address (void)
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{
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Elf32_Addr addr;
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asm ("mov.l 1f,r0\n\
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mov.l 3f,r2\n\
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add r12,r2\n\
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mov.l @(r0,r12),r0\n\
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bra 2f\n\
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sub r0,r2\n\
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.align 2\n\
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1: .long _dl_start@GOT\n\
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3: .long _dl_start@GOTOFF\n\
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2: mov r2,%0"
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: "=r" (addr) : : "r0", "r1", "r2");
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return addr;
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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 __attribute__ ((unused))
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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;
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extern void _dl_runtime_resolve (Elf32_Word);
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extern void _dl_runtime_profile (Elf32_Word);
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if (l->l_info[DT_JMPREL] && lazy)
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{
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/* The GOT entries for functions in the PLT have not yet been filled
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in. Their initial contents will arrange when called to load an
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offset into the .rela.plt section and _GLOBAL_OFFSET_TABLE_[1],
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and then jump to _GLOBAL_OFFSET_TABLE[2]. */
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got = (Elf32_Addr *) D_PTR (l, l_info[DT_PLTGOT]);
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/* If a library is prelinked but we have to relocate anyway,
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we have to be able to undo the prelinking of .got.plt.
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The prelinker saved us here address of .plt + 36. */
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if (got[1])
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{
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l->l_mach.plt = got[1] + l->l_addr;
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l->l_mach.gotplt = (Elf32_Addr) &got[3];
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}
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got[1] = (Elf32_Addr) l; /* Identify this shared object. */
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/* The got[2] entry contains the address of a function which gets
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called to get the address of a so far unresolved function and
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jump to it. The profiling extension of the dynamic linker allows
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to intercept the calls to collect information. In this case we
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don't store the address in the GOT so that all future calls also
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end in this function. */
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if (profile)
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{
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got[2] = (Elf32_Addr) &_dl_runtime_profile;
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/* Say that we really want profiling and the timers are started. */
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GL(dl_profile_map) = l;
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}
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else
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/* This function will get called to fix up the GOT entry indicated by
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the offset on the stack, and then jump to the resolved address. */
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got[2] = (Elf32_Addr) &_dl_runtime_resolve;
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}
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return lazy;
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}
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/* This code is used in dl-runtime.c to call the `fixup' function
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and then redirect to the address it returns. */
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#define ELF_MACHINE_RUNTIME_FIXUP_ARGS int plt_type
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#ifdef SHARED
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#define FUN_ADDR "\
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mov.l 1f,r2\n\
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mova 1f,r0\n\
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bra 2f\n\
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add r0,r2 ! Get GOT address in r2\n\
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0: .align 2\n\
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1: .long _GLOBAL_OFFSET_TABLE_\n\
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2: mov.l 3f,r0\n\
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add r2,r0"
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#define GOTJMP(x) #x "@GOTOFF"
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#else
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#define FUN_ADDR "\
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mov.l 3f,r0"
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#define GOTJMP(x) #x
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#endif
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#ifdef HAVE_FPU
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#define FGR_SAVE "\
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sts.l fpscr, @-r15\n\
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mov #8,r3\n\
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swap.w r3, r3\n\
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lds r3, fpscr\n\
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fmov.s fr11, @-r15\n\
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fmov.s fr10, @-r15\n\
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fmov.s fr9, @-r15\n\
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fmov.s fr8, @-r15\n\
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fmov.s fr7, @-r15\n\
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fmov.s fr6, @-r15\n\
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fmov.s fr5, @-r15\n\
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fmov.s fr4, @-r15"
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#define FGR_LOAD "\
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fmov.s @r15+, fr4\n\
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fmov.s @r15+, fr5\n\
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fmov.s @r15+, fr6\n\
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fmov.s @r15+, fr7\n\
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fmov.s @r15+, fr8\n\
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fmov.s @r15+, fr9\n\
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fmov.s @r15+, fr10\n\
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fmov.s @r15+, fr11\n\
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lds.l @r15+, fpscr"
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#else
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#define FGR_SAVE ""
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#define FGR_LOAD ""
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#endif
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#ifndef PROF
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# define ELF_MACHINE_RUNTIME_TRAMPOLINE asm ("\
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.text\n\
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.globl _dl_runtime_resolve\n\
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.type _dl_runtime_resolve, @function\n\
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.align 5\n\
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_dl_runtime_resolve:\n\
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mov.l r2,@-r15\n\
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mov.l r3,@-r15\n\
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mov.l r4,@-r15\n\
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mov.l r5,@-r15\n\
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mov.l r6,@-r15\n\
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mov.l r7,@-r15\n\
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mov.l r12,@-r15\n\
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movt r3 ! Save T flag.\n\
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mov.l r3,@-r15\n\
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" FGR_SAVE "\n\
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sts.l pr,@-r15\n\
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tst r0,r0\n\
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bt 1f\n\
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mov r0,r2\n\
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1:\n\
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mov r0,r4 ! PLT type\n\
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mov r2,r5 ! link map address\n\
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" FUN_ADDR "\n\
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jsr @r0 ! Call resolver.\n\
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mov r1,r6 ! reloc offset\n\
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lds.l @r15+,pr ! Get register content back.\n\
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" FGR_LOAD "\n\
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mov.l @r15+,r3\n\
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shal r3 ! Lode T flag.\n\
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mov.l @r15+,r12\n\
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mov.l @r15+,r7\n\
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mov.l @r15+,r6\n\
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mov.l @r15+,r5\n\
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mov.l @r15+,r4\n\
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mov.l @r15+,r3\n\
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jmp @r0 ! Jump to function address.\n\
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mov.l @r15+,r2\n\
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.align 2\n\
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3:\n\
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.long " GOTJMP (fixup) "\n\
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.size _dl_runtime_resolve, .-_dl_runtime_resolve\n\
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\n\
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.globl _dl_runtime_profile\n\
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.type _dl_runtime_profile, @function\n\
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.align 5\n\
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_dl_runtime_profile:\n\
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mov.l r2,@-r15\n\
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mov.l r3,@-r15\n\
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mov.l r4,@-r15\n\
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mov.l r5,@-r15\n\
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mov.l r6,@-r15\n\
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mov.l r7,@-r15\n\
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mov.l r12,@-r15\n\
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movt r3 ! Save T flag.\n\
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mov.l r3,@-r15\n\
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" FGR_SAVE "\n\
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sts.l pr,@-r15\n\
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tst r0,r0\n\
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bt 1f\n\
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mov r0,r2\n\
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1:\n\
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mov r0,r4 ! PLT type\n\
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mov r2,r5 ! link map address\n\
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sts pr,r7 ! return address\n\
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" FUN_ADDR "\n\
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jsr @r0 ! Call resolver.\n\
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mov r1,r6 ! reloc offset\n\
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lds.l @r15+,pr ! Get register content back.\n\
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" FGR_LOAD "\n\
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mov.l @r15+,r3\n\
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shal r3 ! Lode T flag.\n\
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mov.l @r15+,r12\n\
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mov.l @r15+,r7\n\
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mov.l @r15+,r6\n\
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mov.l @r15+,r5\n\
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mov.l @r15+,r4\n\
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mov.l @r15+,r3\n\
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jmp @r0 ! Jump to function address.\n\
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mov.l @r15+,r2\n\
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.align 2\n\
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3:\n\
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.long " GOTJMP (profile_fixup) "\n\
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.size _dl_runtime_profile, .-_dl_runtime_profile\n\
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.previous\n\
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");
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#else
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# define ELF_MACHINE_RUNTIME_TRAMPOLINE asm ("\
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.text\n\
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.globl _dl_runtime_resolve\n\
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.globl _dl_runtime_profile\n\
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.type _dl_runtime_resolve, @function\n\
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.type _dl_runtime_profile, @function\n\
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.align 5\n\
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_dl_runtime_resolve:\n\
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_dl_runtime_profile:\n\
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mov.l r2,@-r15\n\
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mov.l r3,@-r15\n\
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mov.l r4,@-r15\n\
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mov.l r5,@-r15\n\
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mov.l r6,@-r15\n\
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mov.l r7,@-r15\n\
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mov.l r12,@-r15\n\
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movt r3 ! Save T flag.\n\
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mov.l r3,@-r15\n\
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" FGR_SAVE "\n\
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sts.l pr,@-r15\n\
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tst r0,r0\n\
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bt 1f\n\
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mov r0,r2\n\
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1:\n\
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mov r0,r4 ! PLT type\n\
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mov r2,r5 ! link map address\n\
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sts pr,r7 ! return address\n\
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" FUN_ADDR "\n\
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jsr @r0 ! Call resolver.\n\
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mov r1,r6 ! reloc offset\n\
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lds.l @r15+,pr ! Get register content back.\n\
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" FGR_LOAD "\n\
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mov.l @r15+,r3\n\
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shal r3 ! Lode T flag.\n\
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mov.l @r15+,r12\n\
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mov.l @r15+,r7\n\
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mov.l @r15+,r6\n\
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mov.l @r15+,r5\n\
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mov.l @r15+,r4\n\
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mov.l @r15+,r3\n\
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jmp @r0 ! Jump to function address.\n\
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mov.l @r15+,r2\n\
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.align 2\n\
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3:\n\
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.long " GOTJMP (fixup) "\n\
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.size _dl_runtime_resolve, .-_dl_runtime_resolve\n\
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.size _dl_runtime_profile, .-_dl_runtime_profile\n\
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.previous\n\
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");
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#endif
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/* Mask identifying addresses reserved for the user program,
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where the dynamic linker should not map anything. */
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#define ELF_MACHINE_USER_ADDRESS_MASK 0x80000000UL
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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 asm ("\
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.text\n\
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.globl _start\n\
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.globl _dl_start_user\n\
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_start:\n\
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mov r15,r4\n\
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mov.l .L_dl_start,r1\n\
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mova .L_dl_start,r0\n\
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add r1,r0\n\
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jsr @r0\n\
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nop\n\
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_dl_start_user:\n\
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! Save the user entry point address in r8.\n\
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mov r0,r8\n\
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! Point r12 at the GOT.\n\
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mov.l 1f,r12\n\
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mova 1f,r0\n\
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bra 2f\n\
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add r0,r12\n\
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.align 2\n\
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1: .long _GLOBAL_OFFSET_TABLE_\n\
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2: ! Store the highest stack address\n\
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mov.l .L_stack_end,r0\n\
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mov.l @(r0,r12),r0\n\
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mov.l r15,@r0\n\
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! See if we were run as a command with the executable file\n\
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! name as an extra leading argument.\n\
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mov.l .L_dl_skip_args,r0\n\
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mov.l @(r0,r12),r0\n\
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mov.l @r0,r0\n\
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! Get the original argument count.\n\
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mov.l @r15,r5\n\
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! Subtract _dl_skip_args from it.\n\
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sub r0,r5\n\
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! Adjust the stack pointer to skip _dl_skip_args words.\n\
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shll2 r0\n\
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add r0,r15\n\
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! Store back the modified argument count.\n\
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mov.l r5,@r15\n\
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! Compute argv address and envp.\n\
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mov r15,r6\n\
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add #4,r6\n\
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mov r5,r7\n\
|
|
shll2 r7\n\
|
|
add r15,r7\n\
|
|
mov.l .L_dl_loaded,r0\n\
|
|
mov.l @(r0,r12),r0\n\
|
|
mov.l @r0,r4\n\
|
|
! Call _dl_init.\n\
|
|
mov.l .L_dl_init,r1\n\
|
|
mova .L_dl_init,r0\n\
|
|
add r1,r0\n\
|
|
jsr @r0\n\
|
|
nop\n\
|
|
1: ! Clear the startup flag.\n\
|
|
mov.l .L_dl_starting_up,r0\n\
|
|
mov.l @(r0,r12),r0\n\
|
|
mov #0,r2\n\
|
|
mov.l r2,@r0\n\
|
|
! Pass our finalizer function to the user in r4, as per ELF ABI.\n\
|
|
mov.l .L_dl_fini,r0\n\
|
|
mov.l @(r0,r12),r4\n\
|
|
! Jump to the user's entry point.\n\
|
|
jmp @r8\n\
|
|
nop\n\
|
|
.align 2\n\
|
|
.L_dl_start:\n\
|
|
.long _dl_start@PLT\n\
|
|
.L_stack_end:\n\
|
|
.long __libc_stack_end@GOT\n\
|
|
.L_dl_skip_args:\n\
|
|
.long _dl_skip_args@GOT\n\
|
|
.L_dl_init:\n\
|
|
.long _dl_init_internal@PLT\n\
|
|
.L_dl_loaded:\n\
|
|
.long _rtld_local@GOT\n\
|
|
.L_dl_starting_up:\n\
|
|
.long _dl_starting_up@GOT\n\
|
|
.L_dl_fini:\n\
|
|
.long _dl_fini@GOT\n\
|
|
.previous\n\
|
|
");
|
|
|
|
/* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry or
|
|
TLS variable, so undefined references should not be allowed to
|
|
define the value.
|
|
ELF_RTYPE_CLASS_NOCOPY iff TYPE should not be allowed to resolve to one
|
|
of the main executable's symbols, as for a COPY reloc. */
|
|
#ifdef USE_TLS
|
|
# define elf_machine_type_class(type) \
|
|
((((type) == R_SH_JMP_SLOT || (type) == R_SH_TLS_DTPMOD32 \
|
|
|| (type) == R_SH_TLS_DTPOFF32 || (type) == R_SH_TLS_TPOFF32) \
|
|
* ELF_RTYPE_CLASS_PLT) \
|
|
| (((type) == R_SH_COPY) * ELF_RTYPE_CLASS_COPY))
|
|
#else
|
|
#define elf_machine_type_class(type) \
|
|
((((type) == R_SH_JMP_SLOT) * ELF_RTYPE_CLASS_PLT) \
|
|
| (((type) == R_SH_COPY) * ELF_RTYPE_CLASS_COPY))
|
|
#endif
|
|
|
|
/* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */
|
|
#define ELF_MACHINE_JMP_SLOT R_SH_JMP_SLOT
|
|
|
|
/* We define an initialization functions. This is called very early in
|
|
_dl_sysdep_start. */
|
|
#define DL_PLATFORM_INIT dl_platform_init ()
|
|
|
|
static inline void __attribute__ ((unused))
|
|
dl_platform_init (void)
|
|
{
|
|
if (GL(dl_platform) != NULL && *GL(dl_platform) == '\0')
|
|
/* Avoid an empty string which would disturb us. */
|
|
GL(dl_platform) = NULL;
|
|
}
|
|
|
|
static inline Elf32_Addr
|
|
elf_machine_fixup_plt (struct link_map *map, lookup_t t,
|
|
const Elf32_Rela *reloc,
|
|
Elf32_Addr *reloc_addr, Elf32_Addr value)
|
|
{
|
|
return *reloc_addr = value;
|
|
}
|
|
|
|
/* Return the final value of a plt relocation. */
|
|
static inline Elf32_Addr
|
|
elf_machine_plt_value (struct link_map *map, const Elf32_Rela *reloc,
|
|
Elf32_Addr value)
|
|
{
|
|
return value + reloc->r_addend;
|
|
}
|
|
|
|
#endif /* !dl_machine_h */
|
|
|
|
#ifdef RESOLVE
|
|
|
|
/* SH never uses Elf32_Rel relocations. */
|
|
#define ELF_MACHINE_NO_REL 1
|
|
|
|
/* Perform the relocation specified by RELOC and SYM (which is fully resolved).
|
|
MAP is the object containing the reloc. */
|
|
|
|
static inline void
|
|
elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
|
|
const Elf32_Sym *sym, const struct r_found_version *version,
|
|
Elf32_Addr *const reloc_addr)
|
|
{
|
|
const unsigned int r_type = ELF32_R_TYPE (reloc->r_info);
|
|
Elf32_Addr value;
|
|
|
|
#define COPY_UNALIGNED_WORD(sw, tw, align) \
|
|
{ \
|
|
void *__s = &(sw), *__t = &(tw); \
|
|
switch ((align)) \
|
|
{ \
|
|
case 0: \
|
|
*(unsigned long *) __t = *(unsigned long *) __s; \
|
|
break; \
|
|
case 2: \
|
|
*((unsigned short *) __t)++ = *((unsigned short *) __s)++; \
|
|
*((unsigned short *) __t) = *((unsigned short *) __s); \
|
|
break; \
|
|
default: \
|
|
*((unsigned char *) __t)++ = *((unsigned char *) __s)++; \
|
|
*((unsigned char *) __t)++ = *((unsigned char *) __s)++; \
|
|
*((unsigned char *) __t)++ = *((unsigned char *) __s)++; \
|
|
*((unsigned char *) __t) = *((unsigned char *) __s); \
|
|
break; \
|
|
} \
|
|
}
|
|
|
|
if (__builtin_expect (r_type == R_SH_RELATIVE, 0))
|
|
{
|
|
#ifndef RTLD_BOOTSTRAP
|
|
if (map != &GL(dl_rtld_map)) /* Already done in rtld itself. */
|
|
#endif
|
|
{
|
|
if (reloc->r_addend)
|
|
value = map->l_addr + reloc->r_addend;
|
|
else
|
|
{
|
|
COPY_UNALIGNED_WORD (*reloc_addr, value, (int) reloc_addr & 3);
|
|
value += map->l_addr;
|
|
}
|
|
COPY_UNALIGNED_WORD (value, *reloc_addr, (int) reloc_addr & 3);
|
|
}
|
|
}
|
|
#ifndef RTLD_BOOTSTRAP
|
|
else if (__builtin_expect (r_type == R_SH_NONE, 0))
|
|
return;
|
|
#endif
|
|
else
|
|
{
|
|
const Elf32_Sym *const refsym = sym;
|
|
#if defined USE_TLS && !defined RTLD_BOOTSTRAP
|
|
struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type);
|
|
|
|
value = sym == NULL ? 0 : sym_map->l_addr + sym->st_value;
|
|
#else
|
|
|
|
value = RESOLVE (&sym, version, r_type);
|
|
# ifndef RTLD_BOOTSTRAP
|
|
if (sym != NULL)
|
|
# endif
|
|
value += sym->st_value;
|
|
#endif
|
|
value += reloc->r_addend;
|
|
|
|
switch (r_type)
|
|
{
|
|
case R_SH_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
|
|
|| (sym->st_size < refsym->st_size && GL(dl_verbose)))
|
|
{
|
|
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 ?: "<program name unknown>",
|
|
strtab + refsym->st_name);
|
|
}
|
|
memcpy (reloc_addr, (void *) value, MIN (sym->st_size,
|
|
refsym->st_size));
|
|
break;
|
|
case R_SH_GLOB_DAT:
|
|
case R_SH_JMP_SLOT:
|
|
/* These addresses are always aligned. */
|
|
*reloc_addr = value;
|
|
break;
|
|
#ifdef USE_TLS
|
|
/* XXX Remove TLS relocations which are not needed. */
|
|
case R_SH_TLS_DTPMOD32:
|
|
# ifdef RTLD_BOOTSTRAP
|
|
/* During startup the dynamic linker is always the module
|
|
with index 1.
|
|
XXX If this relocation is necessary move before RESOLVE
|
|
call. */
|
|
*reloc_addr = 1;
|
|
# else
|
|
/* Get the information from the link map returned by the
|
|
resolv function. */
|
|
if (sym_map != NULL)
|
|
*reloc_addr = sym_map->l_tls_modid;
|
|
# endif
|
|
break;
|
|
case R_SH_TLS_DTPOFF32:
|
|
# ifndef RTLD_BOOTSTRAP
|
|
/* During relocation all TLS symbols are defined and used.
|
|
Therefore the offset is already correct. */
|
|
if (sym != NULL)
|
|
*reloc_addr = sym->st_value;
|
|
# endif
|
|
break;
|
|
case R_SH_TLS_TPOFF32:
|
|
/* The offset is positive, afterward from the thread pointer. */
|
|
# ifdef RTLD_BOOTSTRAP
|
|
*reloc_addr = GL(dl_rtld_map).l_tls_offset + sym->st_value;
|
|
# else
|
|
/* We know the offset of object the symbol is contained in.
|
|
It is a positive value which will be added to the thread
|
|
pointer. To get the variable position in the TLS block
|
|
we add the offset from that of the TLS block. */
|
|
if (sym_map != NULL && sym != NULL)
|
|
*reloc_addr = sym_map->l_tls_offset + sym->st_value;
|
|
# endif
|
|
break;
|
|
#endif /* use TLS */
|
|
case R_SH_DIR32:
|
|
{
|
|
#ifndef RTLD_BOOTSTRAP
|
|
/* 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. */
|
|
# ifndef SHARED
|
|
weak_extern (GL(dl_rtld_map));
|
|
# endif
|
|
if (map == &GL(dl_rtld_map))
|
|
/* Undo the relocation done here during bootstrapping.
|
|
Now we will relocate it anew, possibly using a
|
|
binding found in the user program or a loaded library
|
|
rather than the dynamic linker's built-in definitions
|
|
used while loading those libraries. */
|
|
value -= map->l_addr + refsym->st_value + reloc->r_addend;
|
|
#endif
|
|
COPY_UNALIGNED_WORD (value, *reloc_addr, (int) reloc_addr & 3);
|
|
break;
|
|
}
|
|
case R_SH_REL32:
|
|
value = (value - (Elf32_Addr) reloc_addr);
|
|
COPY_UNALIGNED_WORD (value, *reloc_addr, (int) reloc_addr & 3);
|
|
break;
|
|
default:
|
|
_dl_reloc_bad_type (map, r_type, 0);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static inline void
|
|
elf_machine_rela_relative (Elf32_Addr l_addr, const Elf32_Rela *reloc,
|
|
Elf32_Addr *const reloc_addr)
|
|
{
|
|
Elf32_Addr value;
|
|
|
|
if (reloc->r_addend)
|
|
value = l_addr + reloc->r_addend;
|
|
else
|
|
{
|
|
COPY_UNALIGNED_WORD (*reloc_addr, value, (int) reloc_addr & 3);
|
|
value += l_addr;
|
|
}
|
|
COPY_UNALIGNED_WORD (value, *reloc_addr, (int) reloc_addr & 3);
|
|
|
|
#undef COPY_UNALIGNED_WORD
|
|
}
|
|
|
|
static inline void
|
|
elf_machine_lazy_rel (struct link_map *map,
|
|
Elf32_Addr l_addr, const Elf32_Rela *reloc)
|
|
{
|
|
Elf32_Addr *const reloc_addr = (void *) (l_addr + reloc->r_offset);
|
|
/* Check for unexpected PLT reloc type. */
|
|
if (ELF32_R_TYPE (reloc->r_info) == R_SH_JMP_SLOT)
|
|
{
|
|
if (__builtin_expect (map->l_mach.plt, 0) == 0)
|
|
*reloc_addr += l_addr;
|
|
else
|
|
*reloc_addr =
|
|
map->l_mach.plt
|
|
+ (((Elf32_Addr) reloc_addr) - map->l_mach.gotplt) * 7;
|
|
}
|
|
else
|
|
_dl_reloc_bad_type (map, ELF32_R_TYPE (reloc->r_info), 1);
|
|
}
|
|
|
|
#endif /* RESOLVE */
|