mirror of
https://sourceware.org/git/glibc.git
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Update.
* sysdeps/sh/Dist: Removed. There is no ieee754.h file. * sysdeps/sh/sh3/dl-machine.h: Moved to... * sysdeps/sh/dl-machine.h: ...here. New file. * sysdeps/sh/sh4/dl-machine.h: Simply define KERNEL_MATH_EMULATION and include generic SH version. * sysdeps/sh/sh3/bits/endian.h: Move to... * sysdeps/sh/bits/endian.h: ...here. New file. * sysdeps/sh/sh4/bits/endian.h: Removed. * sysdeps/sh/sh3/bits/huge_val.h: Move to... * sysdeps/sh/bits/huge_val.h: ...here. New file. * sysdeps/sh/sh4/bits/huge_val.h: Removed. GAS which warns about changing section attributes. Proposed by Nick Clifton <nickc@redhat.com>. * sysdeps/sh/elf/initfini.c: New file. * sysdeps/sh/elf/start.S: New file. * sysdeps/sh/sys/ucontext.h: New file.
This commit is contained in:
Ulrich Drepper
parent
37fb8add30
commit
65074d2311
25
ChangeLog
25
ChangeLog
@ -1,8 +1,20 @@
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2000-06-12 Ulrich Drepper <drepper@redhat.com>
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* sysdeps/sh/Dist: Removed. There is no ieee754.h file.
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* sysdeps/sh/sh3/dl-machine.h: Moved to...
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* sysdeps/sh/dl-machine.h: ...here. New file.
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* sysdeps/sh/sh4/dl-machine.h: Simply define KERNEL_MATH_EMULATION
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and include generic SH version.
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* sysdeps/sh/sh3/bits/endian.h: Move to...
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* sysdeps/sh/bits/endian.h: ...here. New file.
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* sysdeps/sh/sh4/bits/endian.h: Removed.
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* sysdeps/sh/sh3/bits/huge_val.h: Move to...
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* sysdeps/sh/bits/huge_val.h: ...here. New file.
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* sysdeps/sh/sh4/bits/huge_val.h: Removed.
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* include/libc-symbols.h (link_warning): Work around a change in
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GAS which wrns about changing section attributes.
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Proposed by Nich Clifton <nickc@redhat.com>.
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GAS which warns about changing section attributes.
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Proposed by Nick Clifton <nickc@redhat.com>.
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2000-06-12 H.J. Lu <hjl@gnu.org>
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@ -34,6 +46,7 @@
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* sysdeps/sh/Dist: New file.
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* sysdeps/sh/Implies: New file.
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* sysdeps/sh/elf/initfini.c: New file.
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* sysdeps/sh/gmp-mparam.h: New file.
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* sysdeps/sh/init-first.c: New file.
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* sysdeps/sh/machine-gmon.h: New file.
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@ -47,10 +60,7 @@
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* sysdeps/sh/sh3/bsd-_setjmp.S: New file.
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* sysdeps/sh/sh3/bsd-setjmp.S: New file.
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* sysdeps/sh/sh3/dl-machine.h: New file.
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* sysdeps/sh/sh3/elf/initfini.c: New file.
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* sysdeps/sh/sh3/elf/start.S: New file.
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* sysdeps/sh/sh3/setjmp.S: New file.
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* sysdeps/sh/sh3/sys/ucontext.h: New file.
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* sysdeps/sh/sh4/__longjmp.S: New file.
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* sysdeps/sh/sh4/bits/endian.h: New file.
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* sysdeps/sh/sh4/bits/huge_val.h: New file.
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@ -58,8 +68,6 @@
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* sysdeps/sh/sh4/bsd-_setjmp.S: New file.
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* sysdeps/sh/sh4/bsd-setjmp.S: New file.
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* sysdeps/sh/sh4/dl-machine.h: New file.
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* sysdeps/sh/sh4/elf/initfini.c: New file.
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* sysdeps/sh/sh4/elf/start.S: New file.
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* sysdeps/sh/sh4/fpu/bits/fenv.h: New file.
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* sysdeps/sh/sh4/fpu/bits/huge_val.h: New file.
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* sysdeps/sh/sh4/fpu/bits/mathdef.h: New file.
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@ -75,7 +83,8 @@
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* sysdeps/sh/sh4/fpu/ftestexcept.c: New file.
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* sysdeps/sh/sh4/fpu/libm-test-ulps: New file.
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* sysdeps/sh/sh4/setjmp.S: New file.
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* sysdeps/sh/sh4/sys/ucontext.h: New file.
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* sysdeps/sh/elf/start.S: New file.
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* sysdeps/sh/sys/ucontext.h: New file.
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* sysdeps/sh/strlen.S: New file.
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* sysdeps/sh/sysdep.h: New file.
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* sysdeps/unix/sh/sysdep.S: New file.
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@ -1 +0,0 @@
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ieee754.h
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520
sysdeps/sh/dl-machine.h
Normal file
520
sysdeps/sh/dl-machine.h
Normal file
@ -0,0 +1,520 @@
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/* Machine-dependent ELF dynamic relocation inline functions. SH version.
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Copyright (C) 1999, 2000 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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 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 E_MACHINE is compatible with the running host. */
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static inline int __attribute__ ((unused))
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elf_machine_matches_host (Elf32_Half e_machine)
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{
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switch (e_machine)
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{
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case EM_SH:
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return 1;
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default:
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return 0;
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}
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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 .L1,r0
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mov.l .L3,r2
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add r12,r2
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mov.l @(r0,r12),r0
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bra .L2
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sub r0,r2
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.align 2
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.L1: .long _dl_start@GOT
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.L3: .long _dl_start@GOTOFF
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.L2: 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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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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_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
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mova 1f,r0
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bra 2f
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add r0,r2 ! Get GOT address in r2
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0: .align 2
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1: .long _GLOBAL_OFFSET_TABLE_
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2: mov.l 3f,r0
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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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#if defined (KERNEL_MATH_EMULATION)
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#define FGR_SAVE "\
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sts.l fpscr, @-r15
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mov #8,r3
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swap.w r3, r3
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lds r3, fpscr
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fmov.s fr11, @-r15
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fmov.s fr10, @-r15
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fmov.s fr9, @-r15
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fmov.s fr8, @-r15
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fmov.s fr7, @-r15
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fmov.s fr6, @-r15
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fmov.s fr5, @-r15
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fmov.s fr4, @-r15"
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#define FGR_LOAD "\
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fmov.s @r15+, fr4
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fmov.s @r15+, fr5
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fmov.s @r15+, fr6
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fmov.s @r15+, fr7
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fmov.s @r15+, fr8
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fmov.s @r15+, fr9
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fmov.s @r15+, fr10
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fmov.s @r15+, fr11
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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
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.globl _dl_runtime_resolve
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.type _dl_runtime_resolve, @function
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.align 5
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_dl_runtime_resolve:
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mov.l r3,@-r15
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mov.l r4,@-r15
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mov.l r5,@-r15
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mov.l r6,@-r15
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mov.l r7,@-r15
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mov.l r12,@-r15
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movt r3 ! Save T flag.
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mov.l r3,@-r15
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" FGR_SAVE "
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sts.l pr,@-r15
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mov r0,r4 ! PLT type
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mov r2,r5 ! link map address
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" FUN_ADDR "
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jsr @r0 ! Call resolver.
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mov r1,r6 ! reloc offset
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lds.l @r15+,pr ! Get register content back.
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" FGR_LOAD "
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mov.l @r15+,r3
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shal r3 ! Lode T flag.
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mov.l @r15+,r12
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mov.l @r15+,r7
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mov.l @r15+,r6
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mov.l @r15+,r5
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mov.l @r15+,r4
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jmp @r0 ! Jump to function address.
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mov.l @r15+,r3
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.align 2
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3:
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.long " GOTJMP (fixup) "
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.size _dl_runtime_resolve, .-_dl_runtime_resolve
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.globl _dl_runtime_profile
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.type _dl_runtime_profile, @function
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.align 5
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||||
_dl_runtime_profile:
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mov.l r3,@-r15
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mov.l r4,@-r15
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mov.l r5,@-r15
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||||
mov.l r6,@-r15
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||||
mov.l r7,@-r15
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||||
mov.l r12,@-r15
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||||
movt r3 ! Save T flag.
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mov.l r3,@-r15
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||||
" FGR_SAVE "
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sts.l pr,@-r15
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||||
mov r0,r4 ! PLT type
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||||
mov r2,r5 ! link map address
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||||
sts pr,r7 ! return address
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||||
" FUN_ADDR "
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||||
jsr @r0 ! Call resolver.
|
||||
mov r1,r6 ! reloc offset
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||||
lds.l @r15+,pr ! Get register content back.
|
||||
" FGR_LOAD "
|
||||
mov.l @r15+,r3
|
||||
shal r3 ! Lode T flag.
|
||||
mov.l @r15+,r12
|
||||
mov.l @r15+,r7
|
||||
mov.l @r15+,r6
|
||||
mov.l @r15+,r5
|
||||
mov.l @r15+,r4
|
||||
jmp @r0 ! Jump to function address.
|
||||
mov.l @r15+,r3
|
||||
.align 2
|
||||
3:
|
||||
.long " GOTJMP (profile_fixup) "
|
||||
.size _dl_runtime_profile, .-_dl_runtime_profile
|
||||
.previous
|
||||
");
|
||||
#else
|
||||
# define ELF_MACHINE_RUNTIME_TRAMPOLINE asm ("\
|
||||
.text
|
||||
.globl _dl_runtime_resolve
|
||||
.globl _dl_runtime_profile
|
||||
.type _dl_runtime_resolve, @function
|
||||
.type _dl_runtime_profile, @function
|
||||
.align 5
|
||||
_dl_runtime_resolve:
|
||||
_dl_runtime_profile:
|
||||
mov.l r3,@-r15
|
||||
mov.l r4,@-r15
|
||||
mov.l r5,@-r15
|
||||
mov.l r6,@-r15
|
||||
mov.l r7,@-r15
|
||||
mov.l r12,@-r15
|
||||
movt r3 ! Save T flag.
|
||||
mov.l r3,@-r15
|
||||
" FGR_SAVE "
|
||||
sts.l pr,@-r15
|
||||
mov r0,r4 ! PLT type
|
||||
mov r2,r5 ! link map address
|
||||
sts pr,r7 ! return address
|
||||
" FUN_ADDR "
|
||||
jsr @r0 ! Call resolver.
|
||||
mov r1,r6 ! reloc offset
|
||||
lds.l @r15+,pr ! Get register content back.
|
||||
" FGR_LOAD "
|
||||
mov.l @r15+,r3
|
||||
shal r3 ! Lode T flag.
|
||||
mov.l @r15+,r12
|
||||
mov.l @r15+,r7
|
||||
mov.l @r15+,r6
|
||||
mov.l @r15+,r5
|
||||
mov.l @r15+,r4
|
||||
jmp @r0 ! Jump to function address.
|
||||
mov.l @r15+,r3
|
||||
.align 2
|
||||
3:
|
||||
.long " GOTJMP (fixup) "
|
||||
.size _dl_runtime_resolve, .-_dl_runtime_resolve
|
||||
.size _dl_runtime_profile, .-_dl_runtime_profile
|
||||
.previous
|
||||
");
|
||||
#endif
|
||||
|
||||
/* Mask identifying addresses reserved for the user program,
|
||||
where the dynamic linker should not map anything. */
|
||||
#define ELF_MACHINE_USER_ADDRESS_MASK 0x80000000UL
|
||||
|
||||
/* Initial entry point code for the dynamic linker.
|
||||
The C function `_dl_start' is the real entry point;
|
||||
its return value is the user program's entry point. */
|
||||
|
||||
#define RTLD_START asm ("\
|
||||
.text\n\
|
||||
.globl _start\n\
|
||||
.globl _dl_start_user\n\
|
||||
_start:\n\
|
||||
mov r15,r4\n\
|
||||
mov.l .L_dl_start,r1\n\
|
||||
mova .L_dl_start,r0\n\
|
||||
add r1,r0\n\
|
||||
jsr @r0\n\
|
||||
nop\n\
|
||||
_dl_start_user:\n\
|
||||
! Save the user entry point address in r8.\n\
|
||||
mov r0,r8\n\
|
||||
! Point r12 at the GOT.\n\
|
||||
mov.l 1f,r12\n\
|
||||
mova 1f,r0\n\
|
||||
bra 2f\n\
|
||||
add r0,r12\n\
|
||||
.align 2\n\
|
||||
1: .long _GLOBAL_OFFSET_TABLE_\n\
|
||||
2: ! Store the highest stack address\n\
|
||||
mov.l .L_stack_end,r0\n\
|
||||
mov.l @(r0,r12),r0\n\
|
||||
mov.l r15,@r0\n\
|
||||
! See if we were run as a command with the executable file\n\
|
||||
! name as an extra leading argument.\n\
|
||||
mov.l .L_dl_skip_args,r0\n\
|
||||
mov.l @(r0,r12),r0\n\
|
||||
mov.l @r0,r0\n\
|
||||
! Get the original argument count.\n\
|
||||
mov.l @r15,r5\n\
|
||||
! Subtract _dl_skip_args from it.\n\
|
||||
sub r0,r5\n\
|
||||
! Adjust the stack pointer to skip _dl_skip_args words.\n\
|
||||
shll2 r0\n\
|
||||
add r0,r15\n\
|
||||
! Store back the modified argument count.\n\
|
||||
mov.l r5,@r15\n\
|
||||
! Compute argv address and envp.\n\
|
||||
mov r15,r6\n\
|
||||
add #4,r6\n\
|
||||
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@PLT\n\
|
||||
.L_dl_loaded:\n\
|
||||
.long _dl_loaded@GOT\n\
|
||||
.L_dl_starting_up:\n\
|
||||
.long _dl_starting_up@GOT\n\
|
||||
.L_dl_fini:\n\
|
||||
.long _dl_fini@GOT\n\
|
||||
.previous\n\
|
||||
");
|
||||
|
||||
/* Nonzero iff TYPE should not be allowed to resolve to one of
|
||||
the main executable's symbols, as for a COPY reloc. */
|
||||
#define elf_machine_lookup_noexec_p(type) ((type) == R_SH_COPY)
|
||||
|
||||
/* Nonzero iff TYPE describes relocation of a PLT entry, so
|
||||
PLT entries should not be allowed to define the value. */
|
||||
#define elf_machine_lookup_noplt_p(type) ((type) == R_SH_JMP_SLOT)
|
||||
|
||||
/* 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 ()
|
||||
|
||||
extern const char *_dl_platform;
|
||||
|
||||
static inline void __attribute__ ((unused))
|
||||
dl_platform_init (void)
|
||||
{
|
||||
if (_dl_platform != NULL && *_dl_platform == '\0')
|
||||
/* Avoid an empty string which would disturb us. */
|
||||
_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
|
||||
|
||||
extern char **_dl_argv;
|
||||
|
||||
/* 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)
|
||||
{
|
||||
if (ELF32_R_TYPE (reloc->r_info) == R_SH_RELATIVE)
|
||||
{
|
||||
#ifndef RTLD_BOOTSTRAP
|
||||
if (map != &_dl_rtld_map) /* Already done in rtld itself. */
|
||||
#endif
|
||||
*reloc_addr = map->l_addr + reloc->r_addend;
|
||||
}
|
||||
else if (ELF32_R_TYPE (reloc->r_info) != R_SH_NONE)
|
||||
{
|
||||
const Elf32_Sym *const refsym = sym;
|
||||
Elf32_Addr value = RESOLVE (&sym, version, ELF32_R_TYPE (reloc->r_info));
|
||||
if (sym)
|
||||
value += sym->st_value;
|
||||
value += reloc->r_addend;
|
||||
|
||||
switch (ELF32_R_TYPE (reloc->r_info))
|
||||
{
|
||||
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 && _dl_verbose))
|
||||
{
|
||||
const char *strtab;
|
||||
|
||||
strtab = (const char *) D_PTR (map, l_info[DT_STRTAB]);
|
||||
_dl_sysdep_error (_dl_argv[0] ?: "<program name unknown>",
|
||||
": Symbol `", strtab + refsym->st_name,
|
||||
"' has different size in shared object, "
|
||||
"consider re-linking\n", NULL);
|
||||
}
|
||||
memcpy (reloc_addr, (void *) value, MIN (sym->st_size,
|
||||
refsym->st_size));
|
||||
break;
|
||||
case R_SH_GLOB_DAT:
|
||||
case R_SH_JMP_SLOT:
|
||||
*reloc_addr = value;
|
||||
break;
|
||||
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. */
|
||||
weak_extern (_dl_rtld_map);
|
||||
if (map == &_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
|
||||
*reloc_addr = value;
|
||||
break;
|
||||
}
|
||||
case R_SH_REL32:
|
||||
*reloc_addr = (value - (Elf32_Addr) reloc_addr);
|
||||
break;
|
||||
default:
|
||||
_dl_reloc_bad_type (map, ELF32_R_TYPE (reloc->r_info), 0);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
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)
|
||||
*reloc_addr += l_addr;
|
||||
else
|
||||
_dl_reloc_bad_type (map, ELF32_R_TYPE (reloc->r_info), 1);
|
||||
}
|
||||
|
||||
#endif /* RESOLVE */
|
||||
@ -1,515 +1,2 @@
|
||||
/* Machine-dependent ELF dynamic relocation inline functions. SH-4 version.
|
||||
Copyright (C) 1999, 2000 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Library General Public License as
|
||||
published by the Free Software Foundation; either version 2 of the
|
||||
License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Library General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Library General Public
|
||||
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
||||
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||
Boston, MA 02111-1307, USA. */
|
||||
|
||||
#ifndef dl_machine_h
|
||||
#define dl_machine_h
|
||||
|
||||
/* Only dummy. This doesn't work. */
|
||||
|
||||
#define ELF_MACHINE_NAME "SH"
|
||||
|
||||
#include <sys/param.h>
|
||||
|
||||
#include <assert.h>
|
||||
|
||||
/* Return nonzero iff E_MACHINE is compatible with the running host. */
|
||||
static inline int __attribute__ ((unused))
|
||||
elf_machine_matches_host (Elf32_Half e_machine)
|
||||
{
|
||||
switch (e_machine)
|
||||
{
|
||||
case EM_SH:
|
||||
return 1;
|
||||
default:
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* Return the link-time address of _DYNAMIC. Conveniently, this is the
|
||||
first element of the GOT. This must be inlined in a function which
|
||||
uses global data. */
|
||||
static inline Elf32_Addr __attribute__ ((unused))
|
||||
elf_machine_dynamic (void)
|
||||
{
|
||||
register Elf32_Addr *got;
|
||||
asm ("mov r12,%0" :"=r" (got));
|
||||
return *got;
|
||||
}
|
||||
|
||||
|
||||
/* Return the run-time load address of the shared object. */
|
||||
static inline Elf32_Addr __attribute__ ((unused))
|
||||
elf_machine_load_address (void)
|
||||
{
|
||||
Elf32_Addr addr;
|
||||
asm ("mov.l .L1,r0
|
||||
mov.l .L3,r2
|
||||
add r12,r2
|
||||
mov.l @(r0,r12),r0
|
||||
bra .L2
|
||||
sub r0,r2
|
||||
.align 2
|
||||
.L1: .long _dl_start@GOT
|
||||
.L3: .long _dl_start@GOTOFF
|
||||
.L2: mov r2,%0"
|
||||
: "=r" (addr) : : "r0", "r1", "r2");
|
||||
return addr;
|
||||
}
|
||||
|
||||
|
||||
/* Set up the loaded object described by L so its unrelocated PLT
|
||||
entries will jump to the on-demand fixup code in dl-runtime.c. */
|
||||
|
||||
static inline int __attribute__ ((unused))
|
||||
elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
|
||||
{
|
||||
Elf32_Addr *got;
|
||||
extern void _dl_runtime_resolve (Elf32_Word);
|
||||
extern void _dl_runtime_profile (Elf32_Word);
|
||||
|
||||
if (l->l_info[DT_JMPREL] && lazy)
|
||||
{
|
||||
/* The GOT entries for functions in the PLT have not yet been filled
|
||||
in. Their initial contents will arrange when called to load an
|
||||
offset into the .rela.plt section and _GLOBAL_OFFSET_TABLE_[1],
|
||||
and then jump to _GLOBAL_OFFSET_TABLE[2]. */
|
||||
got = (Elf32_Addr *) D_PTR (l, l_info[DT_PLTGOT]);
|
||||
got[1] = (Elf32_Addr) l; /* Identify this shared object. */
|
||||
|
||||
/* The got[2] entry contains the address of a function which gets
|
||||
called to get the address of a so far unresolved function and
|
||||
jump to it. The profiling extension of the dynamic linker allows
|
||||
to intercept the calls to collect information. In this case we
|
||||
don't store the address in the GOT so that all future calls also
|
||||
end in this function. */
|
||||
if (profile)
|
||||
{
|
||||
got[2] = (Elf32_Addr) &_dl_runtime_profile;
|
||||
/* Say that we really want profiling and the timers are started. */
|
||||
_dl_profile_map = l;
|
||||
}
|
||||
else
|
||||
/* This function will get called to fix up the GOT entry indicated by
|
||||
the offset on the stack, and then jump to the resolved address. */
|
||||
got[2] = (Elf32_Addr) &_dl_runtime_resolve;
|
||||
}
|
||||
return lazy;
|
||||
}
|
||||
|
||||
/* This code is used in dl-runtime.c to call the `fixup' function
|
||||
and then redirect to the address it returns. */
|
||||
|
||||
#define ELF_MACHINE_RUNTIME_FIXUP_ARGS int plt_type
|
||||
|
||||
#ifdef SHARED
|
||||
#define FUN_ADDR "\
|
||||
mov.l 1f,r2
|
||||
mova 1f,r0
|
||||
bra 2f
|
||||
add r0,r2 ! Get GOT address in r2
|
||||
0: .align 2
|
||||
1: .long _GLOBAL_OFFSET_TABLE_
|
||||
2: mov.l 3f,r0
|
||||
add r2,r0"
|
||||
#define GOTJMP(x) #x "@GOTOFF"
|
||||
#else
|
||||
#define FUN_ADDR "\
|
||||
mov.l 3f,r0"
|
||||
#define GOTJMP(x) #x
|
||||
#endif
|
||||
|
||||
#define FGR_SAVE "\
|
||||
sts.l fpscr, @-r15
|
||||
mov #8,r3
|
||||
swap.w r3, r3
|
||||
lds r3, fpscr
|
||||
fmov.s fr11, @-r15
|
||||
fmov.s fr10, @-r15
|
||||
fmov.s fr9, @-r15
|
||||
fmov.s fr8, @-r15
|
||||
fmov.s fr7, @-r15
|
||||
fmov.s fr6, @-r15
|
||||
fmov.s fr5, @-r15
|
||||
fmov.s fr4, @-r15"
|
||||
#define FGR_LOAD "\
|
||||
fmov.s @r15+, fr4
|
||||
fmov.s @r15+, fr5
|
||||
fmov.s @r15+, fr6
|
||||
fmov.s @r15+, fr7
|
||||
fmov.s @r15+, fr8
|
||||
fmov.s @r15+, fr9
|
||||
fmov.s @r15+, fr10
|
||||
fmov.s @r15+, fr11
|
||||
lds.l @r15+, fpscr"
|
||||
|
||||
#ifndef PROF
|
||||
# define ELF_MACHINE_RUNTIME_TRAMPOLINE asm ("\
|
||||
.text
|
||||
.globl _dl_runtime_resolve
|
||||
.type _dl_runtime_resolve, @function
|
||||
.align 5
|
||||
_dl_runtime_resolve:
|
||||
mov.l r3,@-r15
|
||||
mov.l r4,@-r15
|
||||
mov.l r5,@-r15
|
||||
mov.l r6,@-r15
|
||||
mov.l r7,@-r15
|
||||
mov.l r12,@-r15
|
||||
movt r3 ! Save T flag.
|
||||
mov.l r3,@-r15
|
||||
" FGR_SAVE "
|
||||
sts.l pr,@-r15
|
||||
mov r0,r4 ! PLT type
|
||||
mov r2,r5 ! link map address
|
||||
" FUN_ADDR "
|
||||
jsr @r0 ! Call resolver.
|
||||
mov r1,r6 ! reloc offset
|
||||
lds.l @r15+,pr ! Get register content back.
|
||||
" FGR_LOAD "
|
||||
mov.l @r15+,r3
|
||||
shal r3 ! Lode T flag.
|
||||
mov.l @r15+,r12
|
||||
mov.l @r15+,r7
|
||||
mov.l @r15+,r6
|
||||
mov.l @r15+,r5
|
||||
mov.l @r15+,r4
|
||||
jmp @r0 ! Jump to function address.
|
||||
mov.l @r15+,r3
|
||||
.align 2
|
||||
3:
|
||||
.long " GOTJMP (fixup) "
|
||||
.size _dl_runtime_resolve, .-_dl_runtime_resolve
|
||||
|
||||
.globl _dl_runtime_profile
|
||||
.type _dl_runtime_profile, @function
|
||||
.align 5
|
||||
_dl_runtime_profile:
|
||||
mov.l r3,@-r15
|
||||
mov.l r4,@-r15
|
||||
mov.l r5,@-r15
|
||||
mov.l r6,@-r15
|
||||
mov.l r7,@-r15
|
||||
mov.l r12,@-r15
|
||||
movt r3 ! Save T flag.
|
||||
mov.l r3,@-r15
|
||||
" FGR_SAVE "
|
||||
sts.l pr,@-r15
|
||||
mov r0,r4 ! PLT type
|
||||
mov r2,r5 ! link map address
|
||||
sts pr,r7 ! return address
|
||||
" FUN_ADDR "
|
||||
jsr @r0 ! Call resolver.
|
||||
mov r1,r6 ! reloc offset
|
||||
lds.l @r15+,pr ! Get register content back.
|
||||
" FGR_LOAD "
|
||||
mov.l @r15+,r3
|
||||
shal r3 ! Lode T flag.
|
||||
mov.l @r15+,r12
|
||||
mov.l @r15+,r7
|
||||
mov.l @r15+,r6
|
||||
mov.l @r15+,r5
|
||||
mov.l @r15+,r4
|
||||
jmp @r0 ! Jump to function address.
|
||||
mov.l @r15+,r3
|
||||
.align 2
|
||||
3:
|
||||
.long " GOTJMP (profile_fixup) "
|
||||
.size _dl_runtime_profile, .-_dl_runtime_profile
|
||||
.previous
|
||||
");
|
||||
#else
|
||||
# define ELF_MACHINE_RUNTIME_TRAMPOLINE asm ("\
|
||||
.text
|
||||
.globl _dl_runtime_resolve
|
||||
.globl _dl_runtime_profile
|
||||
.type _dl_runtime_resolve, @function
|
||||
.type _dl_runtime_profile, @function
|
||||
.align 5
|
||||
_dl_runtime_resolve:
|
||||
_dl_runtime_profile:
|
||||
mov.l r3,@-r15
|
||||
mov.l r4,@-r15
|
||||
mov.l r5,@-r15
|
||||
mov.l r6,@-r15
|
||||
mov.l r7,@-r15
|
||||
mov.l r12,@-r15
|
||||
movt r3 ! Save T flag.
|
||||
mov.l r3,@-r15
|
||||
" FGR_SAVE "
|
||||
sts.l pr,@-r15
|
||||
mov r0,r4 ! PLT type
|
||||
mov r2,r5 ! link map address
|
||||
sts pr,r7 ! return address
|
||||
" FUN_ADDR "
|
||||
jsr @r0 ! Call resolver.
|
||||
mov r1,r6 ! reloc offset
|
||||
lds.l @r15+,pr ! Get register content back.
|
||||
" FGR_LOAD "
|
||||
mov.l @r15+,r3
|
||||
shal r3 ! Lode T flag.
|
||||
mov.l @r15+,r12
|
||||
mov.l @r15+,r7
|
||||
mov.l @r15+,r6
|
||||
mov.l @r15+,r5
|
||||
mov.l @r15+,r4
|
||||
jmp @r0 ! Jump to function address.
|
||||
mov.l @r15+,r3
|
||||
.align 2
|
||||
3:
|
||||
.long " GOTJMP (fixup) "
|
||||
.size _dl_runtime_resolve, .-_dl_runtime_resolve
|
||||
.size _dl_runtime_profile, .-_dl_runtime_profile
|
||||
.previous
|
||||
");
|
||||
#endif
|
||||
|
||||
/* Mask identifying addresses reserved for the user program,
|
||||
where the dynamic linker should not map anything. */
|
||||
#define ELF_MACHINE_USER_ADDRESS_MASK 0x80000000UL
|
||||
|
||||
/* Initial entry point code for the dynamic linker.
|
||||
The C function `_dl_start' is the real entry point;
|
||||
its return value is the user program's entry point. */
|
||||
|
||||
#define RTLD_START asm ("\
|
||||
.text\n\
|
||||
.globl _start\n\
|
||||
.globl _dl_start_user\n\
|
||||
_start:\n\
|
||||
mov r15,r4\n\
|
||||
mov.l .L_dl_start,r1\n\
|
||||
mova .L_dl_start,r0\n\
|
||||
add r1,r0\n\
|
||||
jsr @r0\n\
|
||||
nop\n\
|
||||
_dl_start_user:\n\
|
||||
! Save the user entry point address in r8.\n\
|
||||
mov r0,r8\n\
|
||||
! Point r12 at the GOT.\n\
|
||||
mov.l 1f,r12\n\
|
||||
mova 1f,r0\n\
|
||||
bra 2f\n\
|
||||
add r0,r12\n\
|
||||
.align 2\n\
|
||||
1: .long _GLOBAL_OFFSET_TABLE_\n\
|
||||
2: ! Store the highest stack address\n\
|
||||
mov.l .L_stack_end,r0\n\
|
||||
mov.l @(r0,r12),r0\n\
|
||||
mov.l r15,@r0\n\
|
||||
! See if we were run as a command with the executable file\n\
|
||||
! name as an extra leading argument.\n\
|
||||
mov.l .L_dl_skip_args,r0\n\
|
||||
mov.l @(r0,r12),r0\n\
|
||||
mov.l @r0,r0\n\
|
||||
! Get the original argument count.\n\
|
||||
mov.l @r15,r5\n\
|
||||
! Subtract _dl_skip_args from it.\n\
|
||||
sub r0,r5\n\
|
||||
! Adjust the stack pointer to skip _dl_skip_args words.\n\
|
||||
shll2 r0\n\
|
||||
add r0,r15\n\
|
||||
! Store back the modified argument count.\n\
|
||||
mov.l r5,@r15\n\
|
||||
! Compute argv address and envp.\n\
|
||||
mov r15,r6\n\
|
||||
add #4,r6\n\
|
||||
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@PLT\n\
|
||||
.L_dl_loaded:\n\
|
||||
.long _dl_loaded@GOT\n\
|
||||
.L_dl_starting_up:\n\
|
||||
.long _dl_starting_up@GOT\n\
|
||||
.L_dl_fini:\n\
|
||||
.long _dl_fini@GOT\n\
|
||||
.previous\n\
|
||||
");
|
||||
|
||||
/* Nonzero iff TYPE should not be allowed to resolve to one of
|
||||
the main executable's symbols, as for a COPY reloc. */
|
||||
#define elf_machine_lookup_noexec_p(type) ((type) == R_SH_COPY)
|
||||
|
||||
/* Nonzero iff TYPE describes relocation of a PLT entry, so
|
||||
PLT entries should not be allowed to define the value. */
|
||||
#define elf_machine_lookup_noplt_p(type) ((type) == R_SH_JMP_SLOT)
|
||||
|
||||
/* 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 ()
|
||||
|
||||
extern const char *_dl_platform;
|
||||
|
||||
static inline void __attribute__ ((unused))
|
||||
dl_platform_init (void)
|
||||
{
|
||||
if (_dl_platform != NULL && *_dl_platform == '\0')
|
||||
/* Avoid an empty string which would disturb us. */
|
||||
_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
|
||||
|
||||
extern char **_dl_argv;
|
||||
|
||||
/* 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)
|
||||
{
|
||||
if (ELF32_R_TYPE (reloc->r_info) == R_SH_RELATIVE)
|
||||
{
|
||||
#ifndef RTLD_BOOTSTRAP
|
||||
if (map != &_dl_rtld_map) /* Already done in rtld itself. */
|
||||
#endif
|
||||
*reloc_addr = map->l_addr + reloc->r_addend;
|
||||
}
|
||||
else if (ELF32_R_TYPE (reloc->r_info) != R_SH_NONE)
|
||||
{
|
||||
const Elf32_Sym *const refsym = sym;
|
||||
Elf32_Addr value = RESOLVE (&sym, version, ELF32_R_TYPE (reloc->r_info));
|
||||
if (sym)
|
||||
value += sym->st_value;
|
||||
value += reloc->r_addend;
|
||||
|
||||
switch (ELF32_R_TYPE (reloc->r_info))
|
||||
{
|
||||
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 && _dl_verbose))
|
||||
{
|
||||
const char *strtab;
|
||||
|
||||
strtab = (const char *) D_PTR (map, l_info[DT_STRTAB]);
|
||||
_dl_sysdep_error (_dl_argv[0] ?: "<program name unknown>",
|
||||
": Symbol `", strtab + refsym->st_name,
|
||||
"' has different size in shared object, "
|
||||
"consider re-linking\n", NULL);
|
||||
}
|
||||
memcpy (reloc_addr, (void *) value, MIN (sym->st_size,
|
||||
refsym->st_size));
|
||||
break;
|
||||
case R_SH_GLOB_DAT:
|
||||
case R_SH_JMP_SLOT:
|
||||
*reloc_addr = value;
|
||||
break;
|
||||
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. */
|
||||
weak_extern (_dl_rtld_map);
|
||||
if (map == &_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
|
||||
*reloc_addr = value;
|
||||
break;
|
||||
}
|
||||
case R_SH_REL32:
|
||||
*reloc_addr = (value - (Elf32_Addr) reloc_addr);
|
||||
break;
|
||||
default:
|
||||
_dl_reloc_bad_type (map, ELF32_R_TYPE (reloc->r_info), 0);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
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)
|
||||
*reloc_addr += l_addr;
|
||||
else
|
||||
_dl_reloc_bad_type (map, ELF32_R_TYPE (reloc->r_info), 1);
|
||||
}
|
||||
|
||||
#endif /* RESOLVE */
|
||||
#define KERNEL_MATH_EMULATION
|
||||
#include <sysdeps/sh/dl-machine.h>
|
||||
|
||||
Loading…
Reference in New Issue
Block a user