Re: gdb / dbx / pstack question - getting function argument addresses from stack

[Joel Brobecker <brobecker@adacore.com>]

> As you've mentioned previously, this only works on Solaris. Am I
> totally out of luck on Linux?

The Operating System is actually not the most important factor in
this case. The reason why this "works" on Sparc is because the Sparc
ABI says that the first few parameters should be passed through the
output/input registers. There can be up to 6 registers passed this
way.  So when dbx prints the "parameters" when there is no debugging
info, it is actually printing the contents of these registers.

You didn't say which CPU your Linux was running on, but I'll guess
it's x86. I don't know x86 all that well, but I remember that the
arguments are passed through the stack at an offset to the function
frame base. So the idea that works on Sparc doesn't work for x86,
and I don't see another simple scheme that would work on x86 either.

-- 
Joel