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+/* Startup code for ARM & ELF
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+ Copyright (C) 1995, 1996, 1997, 1998, 2001, 2002, 2005
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+ Free Software Foundation, Inc.
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+
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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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+
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+ In addition to the permissions in the GNU Lesser General Public
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+ License, the Free Software Foundation gives you unlimited
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+ permission to link the compiled version of this file with other
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+ programs, and to distribute those programs without any restriction
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+ coming from the use of this file. (The GNU Lesser General Public
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+ License restrictions do apply in other respects; for example, they
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+ cover modification of the file, and distribution when not linked
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+ into another program.)
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+
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+ Note that people who make modified versions of this file are not
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+ obligated to grant this special exception for their modified
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+ versions; it is their choice whether to do so. The GNU Lesser
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+ General Public License gives permission to release a modified
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+ version without this exception; this exception also makes it
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+ possible to release a modified version which carries forward this
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+ exception.
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+
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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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+
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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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+
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+/* This is the canonical entry point, usually the first thing in the text
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+ segment.
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+
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+ Note that the code in the .init section has already been run.
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+ This includes _init and _libc_init
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+
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+
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+ At this entry point, most registers' values are unspecified, except:
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+
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+ a1 Contains a function pointer to be registered with `atexit'.
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+ This is how the dynamic linker arranges to have DT_FINI
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+ functions called for shared libraries that have been loaded
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+ before this code runs.
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+
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+ sp The stack contains the arguments and environment:
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+ 0(sp) argc
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+ 4(sp) argv[0]
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+ ...
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+ (4*argc)(sp) NULL
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+ (4*(argc+1))(sp) envp[0]
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+ ...
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+ NULL
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+*/
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+/*
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+ For uClinux it looks like this:
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+
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+ argc argument counter (integer)
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+ argv char *argv[]
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+ envp char *envp[]
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+ argv[0] program name (pointer)
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+ argv[1...N] program args (pointers)
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+ argv[argc-1] end of args (integer)
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+ NULL
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+ env[0...N] environment variables (pointers)
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+ NULL
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+
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+ARM register quick reference:
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+
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+ Name Number ARM Procedure Calling Standard Role
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+
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+ a1 r0 argument 1 / integer result / scratch register / argc
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+ a2 r1 argument 2 / scratch register / argv
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+ a3 r2 argument 3 / scratch register / envp
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+ a4 r3 argument 4 / scratch register
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+ v1 r4 register variable
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+ v2 r5 register variable
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+ v3 r6 register variable
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+ v4 r7 register variable
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+ v5 r8 register variable
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+ sb/v6 r9 static base / register variable
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+ sl/v7 r10 stack limit / stack chunk handle / reg. variable
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+ fp r11 frame pointer
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+ ip r12 scratch register / new-sb in inter-link-unit calls
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+ sp r13 lower end of current stack frame
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+ lr r14 link address / scratch register
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+ pc r15 program counter
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+*/
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+
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+.text
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+ .globl _start
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+ .type _start,%function
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+ .type _init,%function
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+ .type _fini,%function
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+ .weak _init
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+ .weak _fini
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+
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+_start:
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+ /* Clear the frame pointer and link register since this is the outermost frame. */
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+ mov fp, #0
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+ mov lr, #0
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+
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+ /* Pop argc off the stack and save a pointer to argv */
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+ ldr a2, [sp], #4
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+ mov a3, sp
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+
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+ /* calc envp */
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+ add a4, a3, a2, lsl #2
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+
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+ ldr ip,=operatingsystem_parameter_argc
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+ str a2, [ip]
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+ ldr ip,=operatingsystem_parameter_argv
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+ str a3, [ip]
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+ ldr ip,=operatingsystem_parameter_envp
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+ str a4, [ip]
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+ ldr ip,=__stkptr
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+ str sp, [ip]
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+
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+ /* Push stack limit */
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+ str a3, [sp, #-4]!
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+
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+ /* Push rtld_fini */
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+ str a1, [sp, #-4]!
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+
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+ /* Fetch address of fini */
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+ ldr ip, =_fini
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+ /* Push fini */
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+ str ip, [sp, #-4]!
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+
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+ /* Set up the other arguments in registers */
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+ ldr a1, =PASCALMAIN
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+ ldr a4, =_init
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+
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+ /* __uClibc_main (main, argc, argv, init, fini, rtld_fini, stack_end) */
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+
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+ /* Let the libc call main and exit with its return code. */
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+ b __uClibc_main
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+
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+ /* should never get here....*/
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+ bl abort
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+
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+ .globl _haltproc
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+ .type _haltproc,#function
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+_haltproc:
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+ swi 0x900001
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+ b _haltproc
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+
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+/* Define a symbol for the first piece of initialized data. */
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+ .data
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+ .globl __data_start
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+__data_start:
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+ .long 0
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+ .weak data_start
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+ data_start = __data_start
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+
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+.bss
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+ .comm __stkptr,4
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+
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+ .comm operatingsystem_parameter_envp,4
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+ .comm operatingsystem_parameter_argc,4
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+ .comm operatingsystem_parameter_argv,4
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+
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+/* We need this stuff to make gdb behave itself, otherwise
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+ gdb will chokes with SIGILL when trying to debug apps.
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+*/
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+ .section ".note.ABI-tag", "a"
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+ .align 4
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+ .long 1f - 0f
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+ .long 3f - 2f
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+ .long 1
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+0: .asciz "GNU"
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+1: .align 4
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+2: .long 0
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+ .long 2,0,0
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+3: .align 4
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micha