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[PATCH v2 5/8] linux-user/nios2: Handle special qemu syscall return valu
From: |
Richard Henderson |
Subject: |
[PATCH v2 5/8] linux-user/nios2: Handle special qemu syscall return values |
Date: |
Sat, 26 Mar 2022 07:24:56 -0600 |
Honor QEMU_ESIGRETURN and QEMU_ERESTARTSYS.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
linux-user/nios2/cpu_loop.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/linux-user/nios2/cpu_loop.c b/linux-user/nios2/cpu_loop.c
index 969460df58..dffe48b8e8 100644
--- a/linux-user/nios2/cpu_loop.c
+++ b/linux-user/nios2/cpu_loop.c
@@ -55,6 +55,14 @@ void cpu_loop(CPUNios2State *env)
env->regs[7], env->regs[8], env->regs[9],
0, 0);
+ if (ret == -QEMU_ESIGRETURN) {
+ /* rt_sigreturn has set all state. */
+ break;
+ }
+ if (ret == -QEMU_ERESTARTSYS) {
+ env->regs[R_PC] -= 4;
+ break;
+ }
/*
* See the code after translate_rc_and_ret: all negative
* values are errors (aided by userspace restricted to 2G),
--
2.25.1
- [PATCH for-7.1 v2 00/39] Logging cleanup and per-thread logfiles, Richard Henderson, 2022/03/26
- [PATCH v2 2/8] linux-user/nios2: Fix clone child return, Richard Henderson, 2022/03/26
- [PATCH v2 1/8] linux-user/nios2: Hoist pc advance to the top of EXCP_TRAP, Richard Henderson, 2022/03/26
- [PATCH v2 01/39] util/log: Drop manual log buffering, Richard Henderson, 2022/03/26
- [PATCH v2 3/8] linux-user/nios2: Drop syscall 0 "workaround", Richard Henderson, 2022/03/26
- [PATCH v2 02/39] target/hexagon: Remove qemu_set_log in hexagon_translate_init, Richard Henderson, 2022/03/26
- [PATCH v2 03/39] util/log: Return bool from qemu_set_log_filename, Richard Henderson, 2022/03/26
- [PATCH v2 4/8] linux-user/nios2: Adjust error return, Richard Henderson, 2022/03/26
- [PATCH v2 05/39] os-posix: Use qemu_log_enabled, Richard Henderson, 2022/03/26
- [PATCH v2 5/8] linux-user/nios2: Handle special qemu syscall return values,
Richard Henderson <=
- [PATCH v2 6/8] linux-user/nios2: Remove do_sigreturn, Richard Henderson, 2022/03/26
- [PATCH v2 04/39] util/log: Pass Error pointer to qemu_set_log, Richard Henderson, 2022/03/26
- [PATCH v2 06/39] util/log: Move qemu_log_lock, qemu_log_unlock out of line, Richard Henderson, 2022/03/26
- [PATCH v2 7/8] linux-user/nios2: Use QEMU_ESIGRETURN from do_rt_sigreturn, Richard Henderson, 2022/03/26
- [PATCH v2 07/39] util/log: Rename qemu_log_lock to qemu_log_trylock, Richard Henderson, 2022/03/26
- [PATCH v2 08/39] hw/xen: Split out xen_pv_output_msg, Richard Henderson, 2022/03/26
- [PATCH v2 8/8] tests/tcg/nios2: Re-enable linux-user tests, Richard Henderson, 2022/03/26
- [PATCH v2 10/39] util/log: Remove qemu_log_vprintf, Richard Henderson, 2022/03/26
- [PATCH v2 09/39] *: Use fprintf between qemu_log_trylock/unlock, Richard Henderson, 2022/03/26
- [PATCH v2 11/39] tcg: Pass the locked filepointer to tcg_dump_ops, Richard Henderson, 2022/03/26