[PATCH v2] ARM: Add SystemTap probes to longjmp and setjmp.

[Andreas Schwab]

Will Newton <will.newton@linaro.org> writes:

> In order to have the correct registers live I need to free up a temp
> register which involves loading lr and sp earlier than the
> call-preserved register set. I could do this by offsetting into the
> jmpbuf but it seems more natural just to move lr and sp to the front
> of the jmp_buf and load registers in ascending order. As far as I am
> aware the layout of jmp_buf is completely opaque so I don't see why
> this would cause any problems?

According to ports/sysdeps/arm/bits/setjmp.h the layout of jmp_buf is
part of the ABI.

Andreas.

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Andreas Schwab, schwab@linux-m68k.org
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