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Message
From: zhustudio<zhustudio@e...>
Date: Mon Aug 23 09:50:57 CEST 2004
Subject: [openrisc] or1ksim basic.S error
I find the error is the none-aligned address.and i add insn to basic.S before call report function
l.movhi r1,0x1
i found other test program such as cbasic and cust have more align
exception when simulate in or1ksim. is it right?
zhustudio
Robert Cragie wrote:
> You are executing the following:
>
> l.sw 0x0(r1),r2
>
> r1 contains 0xfffffffd, so you are trying to do a word access at a
> halfword-aligned address. This will cause an alignment exception.
>
> Robert Cragie, Design Engineer
> _______________________________________________________________
> Jennic Ltd, Furnival Street, Sheffield, S1 4QT, UK
> http://www.jennic.com Tel: +44 (0) 114 281 2655
> _______________________________________________________________
>
>
>>-----Original Message-----
>>From: openrisc-bounces@o...
>>[mailto:openrisc-bounces@o...]On Behalf Of zhustudio
>>Sent: 22 August 2004 04:14
>>To: openrisc@o...
>>Subject: [openrisc] or1ksim basic.S error
>>
>>
>>hi all,
>>
>>here is the or1ksim log at the end of program, basic.S
>>i saw basic.S call 'report' function
>>but when it call report, it execute l.sw 0x0(r1),r2.
>>
>>it reports
>>Exception 0x600 (Alignment) at 0x4000914, EA: 0xfffffffd, ppc:
>>0x4000914, npc: 0x4000918, #568
>>
>>what's the matter of that ?
>>
>>i simulate other c program, such as uart, it has no error.
>>
>>and in support.c
>>i find report function is (in no OR1K define section)
>> void report(unsigned long value)
>> {
>> printf("report(0x%x);\n", (unsigned) value);
>> }
>>
>>
>>Thank you.
>>
>>zhustudio
>>
>>
>>04000910: (_report): 9c21fffc l.addi r1,r1,-4 (next insn)
>>GPR00: 00000000 GPR01: 00000001 GPR02: 00000003 GPR03: deaddead
>>GPR04: 00000000 GPR05: 00008001 GPR06: ffffffff GPR07: fffffffa
>>GPR08: 1243f8b2 GPR09: 040006e4 GPR10: 04000660 GPR11: 000007ff
>>GPR12: 00000fff GPR13: 00001fff GPR14: 00003fff GPR15: 00007fff
>>GPR16: ffff0012 GPR17: ffff0011 GPR18: ffff8010 GPR19: ffffc00f
>>GPR20: ffffe00e GPR21: fffff00d GPR22: fffff80c GPR23: fffffc0b
>>GPR24: fffffe0a GPR25: ffffff09 GPR26: ffffff88 GPR27: ffffffc7
>>GPR28: ffffffe6 GPR29: fffffff5 GPR30: fffffffc GPR31:
>>00000040 flag: 0
>>04000910: (_report): 9c21fffc l.addi r1,r1,-4 (executed) [time 11520ns,
>>#567]
>> HAZARDWAIT: 0
>>04000914: : d4011000 l.sw 0x0(r1),r2 (next insn)
>>GPR00: 00000000 GPR01: fffffffd GPR02: 00000003 GPR03: deaddead
>>GPR04: 00000000 GPR05: 00008001 GPR06: ffffffff GPR07: fffffffa
>>GPR08: 1243f8b2 GPR09: 040006e4 GPR10: 04000660 GPR11: 000007ff
>>GPR12: 00000fff GPR13: 00001fff GPR14: 00003fff GPR15: 00007fff
>>GPR16: ffff0012 GPR17: ffff0011 GPR18: ffff8010 GPR19: ffffc00f
>>GPR20: ffffe00e GPR21: fffff00d GPR22: fffff80c GPR23: fffffc0b
>>GPR24: fffffe0a GPR25: ffffff09 GPR26: ffffff88 GPR27: ffffffc7
>>GPR28: ffffffe6 GPR29: fffffff5 GPR30: fffffffc GPR31:
>>00000040 flag: 0
>>###################################################################
>>Exception 0x600 (Alignment) at 0x4000914, EA: 0xfffffffd, ppc:
>>0x4000914, npc: 0x4000918, #568
>>###################################################################
>>04000914: : d4011000 l.sw 0x0(r1),r2 (executed) [time 11540ns, #568]
>> HAZARDWAIT: 0
>>04000918: : 9c410004 l.addi r2,r1,0x4 (next insn)
>>GPR00: 00000000 GPR01: fffffffd GPR02: 00000003 GPR03: deaddead
>>GPR04: 00000000 GPR05: 00008001 GPR06: ffffffff GPR07: fffffffa
>>GPR08: 1243f8b2 GPR09: 040006e4 GPR10: 04000660 GPR11: 000007ff
>>GPR12: 00000fff GPR13: 00001fff GPR14: 00003fff GPR15: 00007fff
>>GPR16: ffff0012 GPR17: ffff0011 GPR18: ffff8010 GPR19: ffffc00f
>>GPR20: ffffe00e GPR21: fffff00d GPR22: fffff80c GPR23: fffffc0b
>>GPR24: fffffe0a GPR25: ffffff09 GPR26: ffffff88 GPR27: ffffffc7
>>GPR28: ffffffe6 GPR29: fffffff5 GPR30: fffffffc GPR31:
>>00000040 flag: 0
>>00000600: : 00000000 l.j 0x0 (executed) [time 11560ns, #569]
>> HAZARDWAIT: 0
>>00000604: : 00000000 l.j 0x0 (next insn) (delay insn)
>>GPR00: 00000000 GPR01: fffffffd GPR02: 00000003 GPR03: deaddead
>>GPR04: 00000000 GPR05: 00008001 GPR06: ffffffff GPR07: fffffffa
>>GPR08: 1243f8b2 GPR09: 040006e4 GPR10: 04000660 GPR11: 000007ff
>>GPR12: 00000fff GPR13: 00001fff GPR14: 00003fff GPR15: 00007fff
>>GPR16: ffff0012 GPR17: ffff0011 GPR18: ffff8010 GPR19: ffffc00f
>>GPR20: ffffe00e GPR21: fffff00d GPR22: fffff80c GPR23: fffffc0b
>>GPR24: fffffe0a GPR25: ffffff09 GPR26: ffffff88 GPR27: ffffffc7
>>GPR28: ffffffe6 GPR29: fffffff5 GPR30: fffffffc GPR31:
>>00000040 flag: 0
>>00000604: : 00000000 l.j 0x0 (executed) [time 11580ns, #570]
>> HAZARDWAIT: 0
>>
>
>
>
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