Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

/*
 * Copyright (C) 2002 Paul Mackerras, IBM Corp.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */
#include <asm/processor.h>
#include <asm/ppc_asm.h>

_GLOBAL(copy_4K_page)
        std     r31,-8(1)
        std     r30,-16(1)
        std     r29,-24(1)
        std     r28,-32(1)
        std     r27,-40(1)
        std     r26,-48(1)
        std     r25,-56(1)
        std     r24,-64(1)
        std     r23,-72(1)
        std     r22,-80(1)
        std     r21,-88(1)
        std     r20,-96(1)
        li      r5,4096/32 - 1
        addi    r3,r3,-8
        li      r12,5
0:      addi    r5,r5,-24
        mtctr   r12
        ld      r22,640(4)
        ld      r21,512(4)
        ld      r20,384(4)
        ld      r11,256(4)
        ld      r9,128(4)
        ld      r7,0(4)
        ld      r25,648(4)
        ld      r24,520(4)
        ld      r23,392(4)
        ld      r10,264(4)
        ld      r8,136(4)
        ldu     r6,8(4)
        cmpwi   r5,24
1:      std     r22,648(3)
        std     r21,520(3)
        std     r20,392(3)
        std     r11,264(3)
        std     r9,136(3)
        std     r7,8(3)
        ld      r28,648(4)
        ld      r27,520(4)
        ld      r26,392(4)
        ld      r31,264(4)
        ld      r30,136(4)
        ld      r29,8(4)
        std     r25,656(3)
        std     r24,528(3)
        std     r23,400(3)
        std     r10,272(3)
        std     r8,144(3)
        std     r6,16(3)
        ld      r22,656(4)
        ld      r21,528(4)
        ld      r20,400(4)
        ld      r11,272(4)
        ld      r9,144(4)
        ld      r7,16(4)
        std     r28,664(3)
        std     r27,536(3)
        std     r26,408(3)
        std     r31,280(3)
        std     r30,152(3)
        stdu    r29,24(3)
        ld      r25,664(4)
        ld      r24,536(4)
        ld      r23,408(4)
        ld      r10,280(4)
        ld      r8,152(4)
        ldu     r6,24(4)
        bdnz    1b
        std     r22,648(3)
        std     r21,520(3)
        std     r20,392(3)
        std     r11,264(3)
        std     r9,136(3)
        std     r7,8(3)
        addi    r4,r4,640
        addi    r3,r3,648
        bge     0b
        mtctr   r5
        ld      r7,0(4)
        ld      r8,8(4)
        ldu     r9,16(4)
3:      ld      r10,8(4)
        std     r7,8(3)
        ld      r7,16(4)
        std     r8,16(3)
        ld      r8,24(4)
        std     r9,24(3)
        ldu     r9,32(4)
        stdu    r10,32(3)
        bdnz    3b
4:      ld      r10,8(4)
        std     r7,8(3)
        std     r8,16(3)
        std     r9,24(3)
        std     r10,32(3)
9:      ld      r20,-96(1)
        ld      r21,-88(1)
        ld      r22,-80(1)
        ld      r23,-72(1)
        ld      r24,-64(1)
        ld      r25,-56(1)
        ld      r26,-48(1)
        ld      r27,-40(1)
        ld      r28,-32(1)
        ld      r29,-24(1)
        ld      r30,-16(1)
        ld      r31,-8(1)
        blr