File: [local] / sys / arch / m68k / fpsp / MONADIC.CI5 (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:07:05 2008 UTC (16 years, 6 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD Changes since 1.1: +0 -0 lines
Import of OpenBSD 4.2 release kernel tree with initial code to support
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO
Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)
|
* $OpenBSD: MONADIC.CI5,v 1.2 1996/05/29 21:05:21 niklas Exp $
* $NetBSD: MONADIC.CI5,v 1.2 1994/10/26 07:48:39 cgd Exp $
* MOTOROLA MICROPROCESSOR & MEMORY TECHNOLOGY GROUP
* M68000 Hi-Performance Microprocessor Division
* M68040 Software Package
*
* M68040 Software Package Copyright (c) 1993, 1994 Motorola Inc.
* All rights reserved.
*
* THE SOFTWARE is provided on an "AS IS" basis and without warranty.
* To the maximum extent permitted by applicable law,
* MOTOROLA DISCLAIMS ALL WARRANTIES WHETHER EXPRESS OR IMPLIED,
* INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A
* PARTICULAR PURPOSE and any warranty against infringement with
* regard to the SOFTWARE (INCLUDING ANY MODIFIED VERSIONS THEREOF)
* and any accompanying written materials.
*
* To the maximum extent permitted by applicable law,
* IN NO EVENT SHALL MOTOROLA BE LIABLE FOR ANY DAMAGES WHATSOEVER
* (INCLUDING WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS
* PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR
* OTHER PECUNIARY LOSS) ARISING OF THE USE OR INABILITY TO USE THE
* SOFTWARE. Motorola assumes no responsibility for the maintenance
* and support of the SOFTWARE.
*
* You are hereby granted a copyright license to use, modify, and
* distribute the SOFTWARE so long as this entire notice is retained
* without alteration in any modified and/or redistributed versions,
* and that such modified versions are clearly identified as such.
* No licenses are granted by implication, estoppel or otherwise
* under any patents or trademarks of Motorola, Inc.
*
* MONADIC.CI5 1.3 4/30/91
*
* MONADIC.CI5 --- MONADIC template for CI5 compiler
*
xref tag
xref _OPr_
xref _OPz_
xref _OPi_
xref _OPn_
xref _OPm_
xdef _OPd_
_OPd_:
link a6,#-LOCAL_SIZE
fmovem.x fp2-fp3,USER_FP2(a6)
fmove.l fpsr,USER_FPSR(a6)
fmove.l fpcr,d1 ; user's rounding mode/precision
fmove.l #0,fpcr ; force rounding mode/prec to extended,rn
*
* copy, convert and tag input argument
*
fmove.d 8(a6),fp0
fmove.x fp0,ETEMP(a6)
lea ETEMP(a6),a0
bsr tag
move.b d0,STAG(a6)
tst.b d0
bne.b _TMP_2
bsr _OPr_ ; normalized (regular) number
bra.b _TMP_6
_TMP_2:
cmp.b #$20,d0 ; zero?
bne.b _TMP_3
bsr _OPz_
bra.b _TMP_6
_TMP_3:
cmp.b #$40,d0 ; infinity?
bne.b _TMP_4
bsr _OPi_
bra.b _TMP_6
_TMP_4:
cmp.b #$60,d0 ; NaN?
bne.b _TMP_5
bsr _OPn_
bra.b _TMP_6
_TMP_5:
bsr _OPm_ ; assuming a denorm...
_TMP_6:
fmove.l fpsr,d0 ; update status register
or.b USER_FPSR+3(a6),d0 ;add previously accrued exceptions
move.l d0,USER_FPSR(a6)
*
* Result is now in FP0
*
fmovem.x USER_FP2(a6),fp2-fp3 ; note: FP1 not restored
unlk a6
rts