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Re: gas generates incorrect ia64 unwind rlen values
From: |
Keith Owens |
Subject: |
Re: gas generates incorrect ia64 unwind rlen values |
Date: |
Mon, 16 Dec 2002 20:00:23 +1100 |
Another gas bug with ia64 unwind data in binutils-2.11.90.0.8-12.
arch/ia64/lib/memset.S generates unwind data of
<memset>: [0xe0020000005e07c0-0xe0020000005e0be0), info at +0x6aa5e8
v1, flags=0x0 ( ), len=8 bytes
R1:prologue(rlen=1)
R3:body(rlen=194)
B3:epilogue(t=1,ecount=3890)
An epilogue count of 3890? I think not. But wait, it gets worse! The
raw info data is
e0020000006aa5e8 01000000 00000100 0161c201 ea01b29e
0100 version 1
0000 no flags
01000000 ulen=1 (8 bytes), followed by 8 bytes 0161c201 ea01b29e
01 Prologue R1, rlen=1
61c201 Body R3, rlen=194
ea According to IA-64 Software Conventions and Runtime
Architecture Guide August 2000 (24535802.pdf), Appendix B, ea
is not a valid code, B3 records should be e0! Why is gas
generating ea?
01 t=1
b29e uleb128 number with x80 set in both bytes! We have reached
the end of the data area (ulen=1) but uleb128 says there is
more data to come.
Sorry for the surfeit of exclamation marks but the ia64 unwind code is
driving me up the wall. I want kdb to backtrace correctly, all this
garbage data just gets in the way.
- Re: gas generates incorrect ia64 unwind rlen values, (continued)
- Re: gas generates incorrect ia64 unwind rlen values, Keith Owens, 2002/12/16
- Re: [Linux-ia64] Re: gas generates incorrect ia64 unwind rlen values, David Mosberger, 2002/12/16
- Re: gas generates incorrect ia64 unwind rlen values, Jim Wilson, 2002/12/16
- Re: gas generates incorrect ia64 unwind rlen values, Keith Owens, 2002/12/16
- Re: [Linux-ia64] Re: gas generates incorrect ia64 unwind rlen values, David Mosberger, 2002/12/16
- Re: [Linux-ia64] Re: gas generates incorrect ia64 unwind rlen values, David Mosberger, 2002/12/16
- Re: [Linux-ia64] Re: gas generates incorrect ia64 unwind rlen values, Keith Owens, 2002/12/16
- Re: [Linux-ia64] Re: gas generates incorrect ia64 unwind rlen values, David Mosberger, 2002/12/16
- Re: [Linux-ia64] Re: gas generates incorrect ia64 unwind rlen values, Keith Owens, 2002/12/16
- Re: [Linux-ia64] gas generates incorrect ia64 unwind rlen values, David Mosberger, 2002/12/16
Re: gas generates incorrect ia64 unwind rlen values,
Keith Owens <=
Re: [Linux-ia64] gas generates incorrect ia64 unwind rlen values, David Mosberger, 2002/12/16