Subversion Repositories openrisc_me

/*

 * setjmp/longjmp for LatticeMico32.

 * Contributed by Jon Beniston 

 *

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

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of 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.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.

 */

        .section        .text

        .align  4

        .globl  setjmp

        .type   setjmp,@function

        .globl  longjmp

        .type   longjmp,@function

/* setjmp: save all callee saves into jmp_buf

   r1 - Address of jmp_buf

*/

setjmp:

        sw      (r1+0), r11

        sw      (r1+4), r12

        sw      (r1+8), r13

        sw      (r1+12), r14

        sw      (r1+16), r15

        sw      (r1+20), r16

        sw      (r1+24), r17

        sw      (r1+28), r18

        sw      (r1+32), r19

        sw      (r1+36), r20

        sw      (r1+40), r21

        sw      (r1+44), r22

        sw      (r1+48), r23

        sw      (r1+52), r24

        sw      (r1+56), r25

        sw      (r1+60), gp

        sw      (r1+64), fp

        sw      (r1+68), sp

        sw      (r1+72), ra

        mvi     r1, 0

        ret

/* longjmp: restore all callee saves from jmp_buf

   r1 - Address of jmb_buf

   r2 - Value to return with

*/

        .global     longjmp

        .type       longjmp,@function

        .align      4

longjmp:

        lw      r11, (r1+0)

        lw      r12, (r1+4)

        lw      r13, (r1+8)

        lw      r14, (r1+12)

        lw      r15, (r1+16)

        lw      r16, (r1+20)

        lw      r17, (r1+24)

        lw      r18, (r1+28)

        lw      r19, (r1+32)

        lw      r20, (r1+36)

        lw      r21, (r1+40)

        lw      r22, (r1+44)

        lw      r23, (r1+48)

        lw      r24, (r1+52)

        lw      r25, (r1+56)

        lw      gp, (r1+60)

        lw      fp, (r1+64)

        lw      sp, (r1+68)

        lw      ra, (r1+72)

        mv      r1, r2

        ret