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Re: [rfa] Use a different breakpoint instruction for EABI GNU/Linux


On Fri, 2005-11-11 at 22:02, Daniel Jacobowitz wrote:
> Patches have been posted recently for the Linux kernel to use a different
> interface for system calls, in which r7 holds the syscall number instead of
> embedding it in the SWI.  With old-ABI compatibility mode disabled, the
> kernel never looks in the SWI at all.  Which means that using a SWI
> to set a breakpoint doesn't work very well.
> 
> Since 2003 the kernel has supported these particular undefined instructions
> (in the reserved space) as breakpoints.  So if we see an EABI binary, assume
> we have a recent vintage of kernel, and use them.
> 
> Tested on arm-none-linux-gnueabi.  OK for HEAD and 6.4?

OK.
R.


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