source: trunk/libs/newlib/src/libgloss/sparc_leon/locore_clean.S @ 444

/*
 * Copyright (c) 2011 Aeroflex Gaisler
 *
 * BSD license:
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

 
#include <asm-leon/head.h>
                
        .section .text
        /* ------- */
        .weak   _cleanregs_custom_weak
        .set    _cleanregs_custom_weak,_cleanregs_donothing
        /* ------- */
        .global _cleanregs_libgloss
        

_cleanregs_donothing:   
_cleanregs_libgloss:    
        retl
         nop
        
        
#define NUMREGWINDOWS 8
        
//_cleanregs_libgloss:  
         
!''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
! initialize regs with values   
//#define REGINIT       
#ifdef REGINIT
        
        mov      %psr, %g3
        mov      %wim, %g4
        mov      %sp, %g5
        mov      %fp, %g6
        mov      %o7, %g7
        mov      %g0, %wim
        set      0, %g1
        andn     %g3,0x1f,%l0
        mov      %l0,%psr
        nop;  nop; nop
        
3:      set     0x0001,%i0
        set     0x0101,%i1
        set     0x0201,%i2
        set     0x0301,%i3
        set     0x0401,%i4
        set     0x0501,%i5
        set     0x0601,%i6
        set     0x0701,%i7
        set     0x0801,%l0
        set     0x0901,%l1
        set     0x1001,%l2
        set     0x1101,%l3
        set     0x1201,%l4
        set     0x1301,%l5
        set     0x1401,%l6
        set     0x1501,%l7
        or      %g1,%i0,%i0
        or      %g1,%i1,%i1
        or      %g1,%i2,%i2
        or      %g1,%i3,%i3
        or      %g1,%i4,%i4
        or      %g1,%i5,%i5
        or      %g1,%i6,%i6
        or      %g1,%i7,%i7
        or      %g1,%l0,%l0
        or      %g1,%l1,%l1
        or      %g1,%l2,%l2
        or      %g1,%l3,%l3
        or      %g1,%l4,%l4
        or      %g1,%l5,%l5
        or      %g1,%l6,%l6
        or      %g1,%l7,%l7
        restore
        set 0x10000,%g2
        add %g1,%g2,%g1
        set NUMREGWINDOWS*0x10000,%g2
        cmp %g1,%g2
        bne 3b
         nop
        
        mov      %g4,%wim
        nop; nop; nop;
        mov      %g3,%psr 
        nop; nop; nop;
        mov      %g5, %sp 
        mov      %g6, %fp 
        
#endif
!''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''

        jmpl %g7+8,%g0
        nop