NetBSD/sys/arch/acorn26/podulebus/podloader_asm.S

69 lines
2.4 KiB
ArmAsm

/* $NetBSD: podloader_asm.S,v 1.2 2002/03/24 23:37:44 bjh21 Exp $ */
/*-
* Copyright (c) 2000 Ben Harris
* 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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.
*/
#include <machine/asm.h>
RCSID("$NetBSD: podloader_asm.S,v 1.2 2002/03/24 23:37:44 bjh21 Exp $")
#include <sys/errno.h>
/*
* register_t _podloader_call(register_t r0, register_t r1, register_t r11,
* void *loader, int entry)
*
* Podule loader register assignments:
* R0 Write/Read data
* R1 Address
* R2-R3 Scratch
* R4-R9 Preserved
* R10 Scratch
* R11 Hardware address, preserved
* R12 Preserved
* R13 Stack pointer, preserved
*/
ENTRY(_podloader_call)
mov ip, sp
stmfd sp!, {r4, r5, fp, ip, lr, pc}
sub fp, ip, #4
ldr r4, [fp, #4] /* fetch entry */
stmfd sp!, {fp} /* Save FP, since that's R11 */
mov r11, r2
mov lr, pc
add pc, r3, r4, lsl #2 /* Call loader */
ldmfd sp!, {fp}
adrvs r0, Lpodloader_panicmsg
blvs _C_LABEL(panic)
#ifdef __APCS_26__
ldmdb fp, {r4, r5, fp, sp, pc}^
#else
ldmdb fp, {r4, r5, fp, sp, pc}
#endif
Lpodloader_panicmsg:
.asciz "podloader_call"