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86 lines
2.8 KiB
ArmAsm
86 lines
2.8 KiB
ArmAsm
/* Startup code for Alpha/ELF.
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Copyright (C) 1993-2013 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Richard Henderson <rth@tamu.edu>
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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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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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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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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, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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.text
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.align 3
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.globl _start
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.ent _start, 0
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.type _start,@function
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_start:
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.frame $15, 0, $15
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br gp, 1f
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1: ldgp gp, 0(gp)
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subq sp, 16, sp
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mov 0, $15
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.prologue 0
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/* Load address of the user's main function. */
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lda a0, main
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ldl a1, 16(sp) /* get argc */
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lda a2, 24(sp) /* get argv */
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/* Load address of our own entry points to .fini and .init. */
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lda a3, __libc_csu_init
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lda a4, __libc_csu_fini
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/* Store address of the shared library termination function. */
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mov v0, a5
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/* Provide the highest stack address to the user code. */
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stq sp, 0(sp)
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/* Call the user's main function, and exit with its value.
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But let the libc call main. */
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jsr ra, __libc_start_main
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/* Die very horribly if exit returns. Call_pal hlt is callable from
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kernel mode only; this will result in an illegal instruction trap. */
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call_pal 0
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.end _start
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/* For ECOFF backwards compatibility. */
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weak_alias (_start, __start)
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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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.weak data_start
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data_start = __data_start
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