[Ltrace-devel] ltrace: Try to fix MIPS arch (tested against git-fcf256c)

Petr Machata pmachata at redhat.com
Tue Sep 4 01:17:33 UTC 2012

Sedat Dilek <sedat.dilek at gmail.com> writes:
> root at fritz:/var/tmp# ./ltrace --config=./ltrace.conf -L -x main
> ./a.out 2>&1 | tee ltrace-L-x-main.txt
> main(1, 0x7fe3c9f4, 0x7fe3c9fc, 0 <unfinished ...>
> main(1, 0x7fe3c9f4, 0x7fe3c9fc, 0 <unfinished ...>
> main(1, 0x7fe3c9f4, 0x7fe3c9fc, 0 <unfinished ...>

This looks like a double enablement.  When we hit the breakpoint and try
to disable it, we instead overwrite it with itself.  Hard to tell what's
causing this.

Really, it's clear that MIPS support is pretty broken.  I'll try to get
around to fixing this later this year, but first I need to take care of
Itanium, ARM, reimplementing -l, and supporting IFUNC symbols.

(Itanium generally works, but needs some support for homogenous floating
aggregates and passing structures in registers.  I'll take this
opportunity to convert the backend to ARCH_HAVE_FETCH_ARG.)

Which is to say that you are free to hack on it yourself, if you feel
like it.  I won't get around to it anytime soon.

Thank you,

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