tree 0e7947ce9570777af2f28d431ceeca4fecffea7b
parent ed35afcb331a972210816435d6b1b5de17fc7d4f
author Helge Deller <deller@gmx.de> 1704310518 +0100
committer Helge Deller <deller@gmx.de> 1705124894 +0100

target/hppa: Avoid accessing %gr0 when raising exception

The value of unwind_breg may reference register %r0, but we need to avoid
accessing gr0 directly and use the value 0 instead.

At runtime I've seen unwind_breg being zero with the Linux kernel when
rfi is used to jump to smp_callin().

Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Bruno Haible <bruno@clisp.org>