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

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Remove all my pointless "This file is part of NetBSD/arm26" comments, since that's easier than correcting them.
2002-03-25 02:37:42 +03:00
/* $NetBSD: podloader_asm.S,v 1.2 2002/03/24 23:37:44 bjh21 Exp $ */
Add support for using RISC OS podule loaders to get at ROM chunks on podules. By default, they aren't used, since most cards seem to put the non-OS-dependent stuff in the main chunk directory. i-cubed cards are a notable exception.
2000-12-20 13:57:38 +03:00
/*-
* 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>
Remove all my pointless "This file is part of NetBSD/arm26" comments, since that's easier than correcting them.
2002-03-25 02:37:42 +03:00
RCSID("$NetBSD: podloader_asm.S,v 1.2 2002/03/24 23:37:44 bjh21 Exp $")
Add support for using RISC OS podule loaders to get at ROM chunks on podules. By default, they aren't used, since most cards seem to put the non-OS-dependent stuff in the main chunk directory. i-cubed cards are a notable exception.
2000-12-20 13:57:38 +03:00
#include <sys/errno.h>
/*
Disable interrupts for podule loaders from C rather than assembler, since the former is more portable and less error-prone. This fixes port-arm26/14811.
2001-12-03 23:54:07 +03:00
* register_t _podloader_call(register_t r0, register_t r1, register_t r11,
Add support for using RISC OS podule loaders to get at ROM chunks on podules. By default, they aren't used, since most cards seem to put the non-OS-dependent stuff in the main chunk directory. i-cubed cards are a notable exception.
2000-12-20 13:57:38 +03:00
* void *loader, int entry)
Use int_off_save and int_restore rather than int_off and int_on.
2001-08-21 03:28:05 +04:00
*
* 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
Add support for using RISC OS podule loaders to get at ROM chunks on podules. By default, they aren't used, since most cards seem to put the non-OS-dependent stuff in the main chunk directory. i-cubed cards are a notable exception.
2000-12-20 13:57:38 +03:00
*/
Disable interrupts for podule loaders from C rather than assembler, since the former is more portable and less error-prone. This fixes port-arm26/14811.
2001-12-03 23:54:07 +03:00
ENTRY(_podloader_call)
Add support for using RISC OS podule loaders to get at ROM chunks on podules. By default, they aren't used, since most cards seem to put the non-OS-dependent stuff in the main chunk directory. i-cubed cards are a notable exception.
2000-12-20 13:57:38 +03:00
mov ip, sp
Use int_off_save and int_restore rather than int_off and int_on.
2001-08-21 03:28:05 +04:00
stmfd sp!, {r4, r5, fp, ip, lr, pc}
Add support for using RISC OS podule loaders to get at ROM chunks on podules. By default, they aren't used, since most cards seem to put the non-OS-dependent stuff in the main chunk directory. i-cubed cards are a notable exception.
2000-12-20 13:57:38 +03:00
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__
Use int_off_save and int_restore rather than int_off and int_on.
2001-08-21 03:28:05 +04:00
ldmdb fp, {r4, r5, fp, sp, pc}^
Add support for using RISC OS podule loaders to get at ROM chunks on podules. By default, they aren't used, since most cards seem to put the non-OS-dependent stuff in the main chunk directory. i-cubed cards are a notable exception.
2000-12-20 13:57:38 +03:00
#else
Use int_off_save and int_restore rather than int_off and int_on.
2001-08-21 03:28:05 +04:00
ldmdb fp, {r4, r5, fp, sp, pc}
Add support for using RISC OS podule loaders to get at ROM chunks on podules. By default, they aren't used, since most cards seem to put the non-OS-dependent stuff in the main chunk directory. i-cubed cards are a notable exception.
2000-12-20 13:57:38 +03:00
#endif
Lpodloader_panicmsg:
.asciz "podloader_call"