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Re: [ColdFire 46/63] Add support for unwinding through signal handlers
Hi,
On Wed, 10 Jan 2007, Richard Sandiford wrote:
> This patch adds support for unwinding through linux signal trampolines.
> Only the ColdFire version has been properly tested, but I hope the 680x0
> version stands a good chance of being OK.
I see a few problems:
- it assumes a fixed glibc with a correct ucontext
- d0/d1/a0/a1 aren't restored from sigcontext
- unconditional fp restore (in case of an idle fpu, it would restore
random data)
- signal_frame isn't set
- the knowledge about the stack layout (the footer structs) is not a
good idea, that part is not guaranteed, a pointer to the context is
passed on the stack.
bye, Roman