mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-25 12:11:10 +00:00
99c7f8700d
Handle prelinked libraries and binaries with new style PLT. 2005-06-07 Jakub Jelinek <jakub@redhat.com> * elf/elf.h (R_PPC_REL16, R_PPC_REL16_LO, R_PPC_REL16_HI, R_PPC_REL16_HA): Define. 2005-06-14 Alan Modra <amodra@bigpond.net.au> * config.h.in (HAVE_ASM_PPC_REL16): Add. * elf/elf.h (DT_PPC_GOT, DT_PPC_NUM): Define. * elf/tls-macros.h (PowerPC32): Include config.h. Add variants of TLS_IE, TLS_LD and TLS_GD for new PLT/GOT layout. * sysdeps/powerpc/powerpc32/configure.in: New file, * sysdeps/powerpc/powerpc32/dl-dtprocnum.h: New file. * sysdeps/powerpc/powerpc32/dl-machine.h (DT_PPC): Define. (ppc_got): New inline function. (elf_machine_dynamic): Use ppc_got. Add attribute const. (elf_machine_load_address): Add attribute const. Don't use int vars. Use bcl rather than bl to save trashing branch target stack. Use elf_machine_dynamic rather than duplicating code here. (elf_machine_runtime_setup): New inline function replacing define. Handle new PLT. (elf_machine_fixup_plt): Handle new PLT. (elf_machine_rela): Likewise. * sysdeps/powerpc/powerpc32/sysdep.h: Include config.h. (CALL_MCOUNT): Don't set up counter vars. * sysdeps/powerpc/powerpc32/ppc-mcount.S: Correct comment. * sysdeps/powerpc/powerpc32/elf/start.S (start_addressesp): Don't define when HAVE_ASM_PPC_REL16. (_start): Add HAVE_ASM_PPC_REL16 code. * sysdeps/powerpc/powerpc32/dl-start.S (_dl_start_user): Don't bl into the GOT when HAVE_ASM_PPC_REL16. * sysdeps/powerpc/powerpc32/memset.S (memset): Likewise. * sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S (__longjmp): Ditto. * sysdeps/powerpc/powerpc32/fpu/s_ceil.S (__ceil): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_ceilf.S (__ceilf): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_floor.S (__floor): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_floorf.S (__floorf): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_lround.S (__lround): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_rint.S (__rint): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_rintf.S (__rintf): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_round.S (__round): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_roundf.S (__roundf): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_trunc.S (__trunc): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_truncf.S (__truncf): Likewise. * sysdeps/powerpc/powerpc32/fpu/setjmp-common.S (__sigsetjmp): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/brk.S (__brk): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext.S (__getcontext): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext.S (__setcontext): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext.S (__swapcontext): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/socket.S (stackblock): Comment. (__socket): Bomb if NARGS >= 7. Invoke CGOTSETUP and CGOTRESTORE. 2005-06-17 Ulrich Drepper <drepper@redhat.com> * sysdeps/posix/sigignore.c: Include <string.h> to tell the compiler to use __GI_memset. * sysdeps/posix/signal.c: Likewise. * sysdeps/posix/sigset.c: Likewise. * sysdeps/posix/sysv_signal.c: Likewise. * sysdeps/unix/sysv/linux/sleep.c: Likewise. * sysdeps/unix/sysv/linux/sysctl.c: Likewise. * sysdeps/unix/sysv/linux/system.c: Likewise.
102 lines
3.3 KiB
ArmAsm
102 lines
3.3 KiB
ArmAsm
/* Startup code for programs linked with GNU libc.
|
|
Copyright (C) 1998,1999,2000,2001,2002,2003 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
In addition to the permissions in the GNU Lesser General Public
|
|
License, the Free Software Foundation gives you unlimited
|
|
permission to link the compiled version of this file with other
|
|
programs, and to distribute those programs without any restriction
|
|
coming from the use of this file. (The GNU Lesser General Public
|
|
License restrictions do apply in other respects; for example, they
|
|
cover modification of the file, and distribution when not linked
|
|
into another program.)
|
|
|
|
Note that people who make modified versions of this file are not
|
|
obligated to grant this special exception for their modified
|
|
versions; it is their choice whether to do so. The GNU Lesser
|
|
General Public License gives permission to release a modified
|
|
version without this exception; this exception also makes it
|
|
possible to release a modified version which carries forward this
|
|
exception.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <sysdep.h>
|
|
#include "bp-sym.h"
|
|
|
|
/* These are the various addresses we require. */
|
|
#ifdef PIC
|
|
.section ".data"
|
|
#else
|
|
.section ".rodata"
|
|
#endif
|
|
.align 2
|
|
L(start_addresses):
|
|
.long _SDA_BASE_
|
|
.long BP_SYM (main)
|
|
.long __libc_csu_init
|
|
.long __libc_csu_fini
|
|
ASM_SIZE_DIRECTIVE(L(start_addresses))
|
|
|
|
.section ".text"
|
|
#if defined PIC && !defined HAVE_ASM_PPC_REL16
|
|
L(start_addressesp):
|
|
.long L(start_addresses)-L(branch)
|
|
#endif
|
|
ENTRY(_start)
|
|
/* Save the stack pointer, in case we're statically linked under Linux. */
|
|
mr r9,r1
|
|
/* Set up an initial stack frame, and clear the LR. */
|
|
clrrwi r1,r1,4
|
|
#ifdef PIC
|
|
bcl 20,31,L(branch)
|
|
L(branch):
|
|
li r0,0
|
|
mflr r13
|
|
#else
|
|
li r0,0
|
|
#endif
|
|
stwu r1,-16(r1)
|
|
mtlr r0
|
|
stw r0,0(r1)
|
|
/* Set r13 to point at the 'small data area', and put the address of
|
|
start_addresses in r8. Also load the GOT pointer so that new PLT
|
|
calls work, like the one to __libc_start_main. */
|
|
#ifdef PIC
|
|
# ifdef HAVE_ASM_PPC_REL16
|
|
addis r30,r13,_GLOBAL_OFFSET_TABLE_-L(branch)@ha
|
|
addis r8,r13,L(start_addresses)-L(branch)@ha
|
|
addi r30,r30,_GLOBAL_OFFSET_TABLE_-L(branch)@l
|
|
lwzu r13,L(start_addresses)-L(branch)@l(r8)
|
|
# else
|
|
lwz r8,L(start_addressesp)-L(branch)(r13)
|
|
add r8,r13,r8
|
|
lwz r13,0(r8)
|
|
# endif
|
|
#else
|
|
lis r8,L(start_addresses)@ha
|
|
lwzu r13,L(start_addresses)@l(r8)
|
|
#endif
|
|
/* and continue in libc-start, in glibc. */
|
|
b JUMPTARGET(BP_SYM (__libc_start_main))
|
|
END(_start)
|
|
|
|
/* Define a symbol for the first piece of initialized data. */
|
|
.section ".data"
|
|
.globl __data_start
|
|
__data_start:
|
|
weak_alias (__data_start, data_start)
|