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[PATCH v2 0/2] linux-user/ppc: Deliver SIGTRAP on tw[i]/td[i]
From: |
matheus . ferst |
Subject: |
[PATCH v2 0/2] linux-user/ppc: Deliver SIGTRAP on tw[i]/td[i] |
Date: |
Tue, 4 Jan 2022 18:00:13 -0300 |
From: Matheus Ferst <matheus.ferst@eldorado.org.br>
In the review of 66c6b40aba1, Richard Henderson suggested[1] using
"trap" instead of ".long 0x0" to generate the signal to test XER
save/restore behavior. However, linux-user aborts when a trap
exception is raised, so we kept the patch with SIGILL.
This patch series is a follow-up to remove the cpu_abort call, deliver
SIGTRAP instead (using TRAP_BRKPT as si_code), and apply the suggestion
to the signal_save_restore_xer test.
This change removes the "qemu: fatal: Tried to call a TRAP" reported in
issue #588[2], but we still have the "Unknown privilege violation (03)"
error.
I had some problems building with
--static, so I couldn't test if it solves the problem.
Based-on: https://lists.gnu.org/archive/html/qemu-devel/2021-12/msg03454.html
[1] https://lists.gnu.org/archive/html/qemu-ppc/2021-10/msg00143.html
v2:
- Based-on rth's patch to use force_sig_fault and avoid merge conflicts
Matheus Ferst (2):
linux-user/ppc: deliver SIGTRAP on POWERPC_EXCP_TRAP
tests/tcg/ppc64le: change signal_save_restore_xer to use SIGTRAP
linux-user/ppc/cpu_loop.c | 3 ++-
tests/tcg/ppc64le/signal_save_restore_xer.c | 8 ++++----
2 files changed, 6 insertions(+), 5 deletions(-)
--
2.25.1
- [PATCH v2 0/2] linux-user/ppc: Deliver SIGTRAP on tw[i]/td[i],
matheus . ferst <=