/*
* Copyright (c) 2001 Minoura Makoto.
* 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 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 ``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 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.
*/
ENTRY_NOPROFILE(exec_image)
|| void exec_image(loaded,executed,entry,size,bootdev,boothowto)
|| unsigned int loaded;
|| unsigned int executed;
|| unsigned int entry;
|| int size;
|| int bootdev;
|| int boothowto;
addl #4,%sp | throw away the return address
moveml %sp@+,%a4-%a6
moveml %sp@+,%d5-%d7
/* copy the trampoline to the last physical page. */
moval LASTADDR,%sp | tmpstack from end of physmem
lea %sp@(-4096),%a3 | use last phys page as tramp
movl #(end_trampoline-trampoline),%sp@-
pea %pc@(trampoline)
pea %a3@
jbsr _C_LABEL(memcpy) | memcpy() is still alive
lea %sp@(12),%sp
jmp %a3@ | jump to tramp
ASENTRY_NOPROFILE(trampoline)
|| %a4: loaded
|| %a5: executed
|| %a6: entry
|| %d5: size
|| %d6: bootdev
|| %d7: boothowto
movl %d5,%sp@- | push last arg (esym)
movel LASTADDR,%sp@- | second arg (physsize)
pea %a5@ | first arg (firstpa)
cmpl %a4,%a5 | if (l == x)
beq L1 | copy not required
/* this may overwrite the trap vectors; disable interrupt. */
oriw #0x2700,%sr
L0: movb %a4@+,%a5@+ | copy kern to x
subql #1,%d5
bne L0
