On 10/15/23 13:12, Mark Cave-Ayland wrote:
1 ./qemu-system-sparc -cdrom debian-40r4a-sparc-netinst.iso -boot d -bios ss5.bin (Boot with real SS-5 PROM instead of OpenBIOS)

-> Hangs during PROM memory test

-> Bisected to:
91b579b5293c4c5c3cfaf0214a5523b655dea4fe is the first bad commit
commit 91b579b5293c4c5c3cfaf0214a5523b655dea4fe
Author: Richard Henderson <richard.hender...@linaro.org>
Date:   Fri Oct 13 14:27:57 2023 -0700

     target/sparc: Move JMPL, RETT, RETURN to decodetree

     Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
     Message-Id: <20231013212846.165724-37-richard.hender...@linaro.org>

Incorrectly translated "call %o7".

Old decoder always computed the source into a temp; new decoder tries to use cpu_gpr[] directly. Clobbered %o7 with return address before setting npc. Fixed by moving the return address store later.


r~

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