Convert ARM to crti.S/crtn.S.
This commit is contained in:
Joseph Myers
parent
06285c8785
commit
92e47068b3
|
|
@ -1,3 +1,11 @@
|
|||
2012-02-08 Joseph Myers <joseph@codesourcery.com>
|
||||
|
||||
* sysdeps/arm/crti.S, sysdeps/arm/crtn.S: New files, based on
|
||||
compiler output for sysdeps/generic/initfini.c.
|
||||
* sysdeps/arm/initfini.c: Remove file.
|
||||
* sysdeps/arm/eabi/Makefile (CFLAGS-initfini.s)
|
||||
(CFLAGS-pt-initfini.s): Remove variables.
|
||||
|
||||
2012-01-08 Joseph Myers <joseph@codesourcery.com>
|
||||
|
||||
* sysdeps/arm/eabi/bits/fenv.h: Use const instead of __const.
|
||||
|
|
|
|||
|
|
@ -0,0 +1,94 @@
|
|||
/* Special .init and .fini section support for ARM.
|
||||
Copyright (C) 1995-2012 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. */
|
||||
|
||||
/* crti.S puts a function prologue at the beginning of the .init and
|
||||
.fini sections and defines global symbols for those addresses, so
|
||||
they can be called as functions. The symbols _init and _fini are
|
||||
magic and cause the linker to emit DT_INIT and DT_FINI. */
|
||||
|
||||
#include <libc-symbols.h>
|
||||
#include <sysdep.h>
|
||||
|
||||
#ifndef PREINIT_FUNCTION
|
||||
# define PREINIT_FUNCTION __gmon_start__
|
||||
#endif
|
||||
|
||||
#ifndef PREINIT_FUNCTION_WEAK
|
||||
# define PREINIT_FUNCTION_WEAK 1
|
||||
#endif
|
||||
|
||||
#if PREINIT_FUNCTION_WEAK
|
||||
weak_extern (PREINIT_FUNCTION)
|
||||
#else
|
||||
.hidden PREINIT_FUNCTION
|
||||
#endif
|
||||
|
||||
#if PREINIT_FUNCTION_WEAK
|
||||
.p2align 2
|
||||
.type call_weak_fn, %function
|
||||
call_weak_fn:
|
||||
ldr r3, .LGOT
|
||||
ldr r2, .LGOT+4
|
||||
.LPIC:
|
||||
add r3, pc, r3
|
||||
ldr r2, [r3, r2]
|
||||
cmp r2, #0
|
||||
bxeq lr
|
||||
b PREINIT_FUNCTION
|
||||
.p2align 2
|
||||
.LGOT:
|
||||
.word _GLOBAL_OFFSET_TABLE_-(.LPIC+8)
|
||||
.word PREINIT_FUNCTION(GOT)
|
||||
#endif
|
||||
|
||||
.section .init,"ax",%progbits
|
||||
.p2align 2
|
||||
.globl _init
|
||||
.type _init, %function
|
||||
_init:
|
||||
stmfd sp!, {r3, lr}
|
||||
#if PREINIT_FUNCTION_WEAK
|
||||
bl call_weak_fn
|
||||
#else
|
||||
bl PREINIT_FUNCTION
|
||||
#endif
|
||||
|
||||
.section .fini,"ax",%progbits
|
||||
.p2align 2
|
||||
.globl _fini
|
||||
.type _fini, %function
|
||||
_fini:
|
||||
stmfd sp!, {r3, lr}
|
||||
|
|
@ -1,5 +1,5 @@
|
|||
/* Special .init and .fini section support. ARM version.
|
||||
Copyright (C) 2006 Free Software Foundation, Inc.
|
||||
/* Special .init and .fini section support for ARM.
|
||||
Copyright (C) 1995-2012 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
|
||||
|
|
@ -34,9 +34,23 @@
|
|||
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
||||
02111-1307 USA. */
|
||||
|
||||
/* Prevent this function from being inlined. Otherwise half of its
|
||||
constant pool will end up in crti and the other half in crtn. */
|
||||
#include <sysdep.h>
|
||||
|
||||
static void call_gmon_start (void) __attribute__((noinline));
|
||||
/* crtn.S puts function epilogues in the .init and .fini sections
|
||||
corresponding to the prologues in crti.S. */
|
||||
|
||||
#include <sysdeps/generic/initfini.c>
|
||||
.section .init,"ax",%progbits
|
||||
#ifdef __ARM_ARCH_4T__
|
||||
ldmfd sp!, {r3, lr}
|
||||
bx lr
|
||||
#else
|
||||
ldmfd sp!, {r3, pc}
|
||||
#endif
|
||||
|
||||
.section .fini,"ax",%progbits
|
||||
#ifdef __ARM_ARCH_4T__
|
||||
ldmfd sp!, {r3, lr}
|
||||
bx lr
|
||||
#else
|
||||
ldmfd sp!, {r3, pc}
|
||||
#endif
|
||||
|
|
@ -3,7 +3,6 @@ aeabi_constants = aeabi_lcsts aeabi_sighandlers aeabi_math
|
|||
aeabi_routines = aeabi_assert aeabi_localeconv aeabi_errno_addr \
|
||||
aeabi_mb_cur_max aeabi_atexit aeabi_memclr aeabi_memcpy \
|
||||
aeabi_memmove aeabi_memset
|
||||
CFLAGS-initfini.s += -fno-asynchronous-unwind-tables -fno-unwind-tables
|
||||
|
||||
sysdep_routines += $(aeabi_constants) $(aeabi_routines)
|
||||
static-only-routines += $(aeabi_constants)
|
||||
|
|
@ -29,7 +28,3 @@ endif
|
|||
ifeq ($(subdir),math)
|
||||
$(objpfx)libm.so: $(elfobjdir)/ld.so
|
||||
endif
|
||||
|
||||
ifeq ($(subdir),nptl)
|
||||
CFLAGS-pt-initfini.s += -fno-asynchronous-unwind-tables -fno-unwind-tables
|
||||
endif
|
||||
|
|
|
|||
Loading…
Reference in New Issue