Subversion Repositories openrisc_2011-10-31

## Copyright (c) 2001, 2009 Xilinx, Inc.  All rights reserved.

##

## Redistribution and use in source and binary forms, with or without

## modification, are permitted provided that the following conditions are

## met:

##

## 1.  Redistributions source code must retain the above copyright notice,

## this list of conditions and the following disclaimer.

##

## 2.  Redistributions in binary form must reproduce the above copyright

## notice, this list of conditions and the following disclaimer in the

## documentation and/or other materials provided with the distribution.

##

## 3.  Neither the name of Xilinx nor the names of its contributors may be

## used to endorse or promote products derived from this software without

## specific prior written permission.

##

## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS

## IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED

## TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A

## PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

## HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED

## TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

## PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

## LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

## NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

## SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#

#

# sim-crtinit.s

#

# Default second stage of C run-time initialization that does not peform

# BSS initialization to zero. Typical use is on a simulator.

#

        .globl _crtinit

        .align 2

        .ent _crtinit

_crtinit:

        addi    r1, r1, -20                     /* Save Link register    */

        swi     r15, r1, 0

        brlid   r15, _program_init              /* Initialize the program  */

        nop

        brlid   r15, __init                     /* Invoke language initialization functions */

        nop

        addi    r6, r0, 0                       /* Initialize argc = 1 and argv = NULL and envp = NULL  */

        addi    r7, r0, 0

        brlid   r15, main                       /* Execute the program */

        addi    r5, r0, 0

        addik   r19, r3, 0                      /* Save return value */

        brlid   r15, __fini                     /* Invoke language cleanup functions */

        nop

        brlid   r15, _program_clean             /* Cleanup the program  */

        nop

        lw      r15, r1, r0                     /* Return back to CRT   */

        addik   r3, r19, 0                      /* Restore return value */

        rtsd    r15, 8

        addi    r1, r1, 20

        .end _crtinit