Blame sysdeps/microblaze/start.S

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/* Copyright (C) 1995-2018 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 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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    .text
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    .globl _start
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    .type _start,@function
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_start:
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    /* On entry the stack contains the following args:
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         r1+0 - argc
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         r1+4 - argv[0]
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         ...
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         r1+4*(argc-1) - argv[argc-1]
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         r1+4*argc - NULL
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         r1+4*argc + 4 - envp[0]
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         ...
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         NULL
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    */
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    addk    r3,r0,r0
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    addk    r5,r1,r0
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1:
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    addik   r5,r5,4
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    lw      r4,r5,r0
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    bneid   r4,1b
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    addik   r3,r3,1
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    addik   r6,r3,-1
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    sw      r6,r1,r0
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    addik   r7,r1,4
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    addik   r1,r1,-24
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#ifdef SHARED
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    /* Setup PIC.  */
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    mfs     r20,rpc
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    addik   r20,r20,_GLOBAL_OFFSET_TABLE_+8
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    lwi     r5,r20,main@GOT
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    lwi     r8,r20,__libc_csu_init@GOT
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    lwi     r9,r20,__libc_csu_fini@GOT
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    brid    __libc_start_main@PLT
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    addk    r10,r0,r0
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#else
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    addik   r5,r0,main
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    addik   r8,r0,__libc_csu_init
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    addik   r9,r0,__libc_csu_fini
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    brid    __libc_start_main
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    addk    r10,r0,r0
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#endif
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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