Subversion Repositories openrisc_me

/* setjmp/longjmp routines.
 *
 * Written by Michael Hayes <m.hayes@elec.canterbury.ac.nz>.
 *
 * The author hereby grant permission to use, copy, modify, distribute,
 * and license this software and its documentation for any purpose, provided
 * that existing copyright notices are retained in all copies and that this
 * notice is included verbatim in any distributions. No written agreement,
 * license, or royalty fee is required for any of the authorized uses.
 * Modifications to this software may be copyrighted by their authors
 * and need not follow the licensing terms described here, provided that
 * the new terms are clearly indicated on the first page of each file where
 * they apply.
 */

        .sect .text
        .global setjmp
        .global longjmp

setjmp:
        pop     r1         
        ldi     sp, ar0
#ifndef _REGPARM
        ldi     *ar0, ar2       
#endif

        sti     r4, *ar2++
        sti     r5, *ar2++
        stf     r6, *ar2++
        stf     r7, *ar2++
#ifdef _TMS320C4x
        sti     r8, *ar2++
#endif
        sti     ar3, *ar2++
        sti     ar4, *ar2++
        sti     ar5, *ar2++
        sti     ar6, *ar2++
        sti     ar7, *ar2++
        bd      r1      
        sti     r1, *ar2++ 
        sti     ar0, *ar2  
        ldi     0, r0   

        
longjmp:
#ifndef _REGPARM
        ldi     sp, ar0
        ldi     *-ar0(1), ar2  
        ldi     *-ar0(2), r0   
        ldiz    1, r0   
#else
        ldi     r2, r0   
        ldiz    1, r0   
#endif
 
        ldi     *ar2++, r4 
        ldi     *ar2++, r5 
        ldf     *ar2++, r6 
        ldf     *ar2++, r7
#ifdef _TMS320C4x
        ldi     *ar2++, r8
#endif
        ldi     *ar2++, ar3
        ldi     *ar2++, ar4 
        ldi     *ar2++, ar5 
        ldi     *ar2++, ar6 
        ldi     *ar2++, ar7 
        ldi     *ar2++, r1 
        ldi     *ar2, sp        
    
        b        r1     
        .end