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[PATCH 4/7] linux-user/nios2: Handle special qemu syscall return values
From: |
Richard Henderson |
Subject: |
[PATCH 4/7] linux-user/nios2: Handle special qemu syscall return values |
Date: |
Sun, 20 Mar 2022 09:00:06 -0700 |
Honor QEMU_ESIGRETURN and QEMU_ERESTARTSYS.
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 2ae94f4a95..d12c3c2852 100644
--- a/linux-user/nios2/cpu_loop.c
+++ b/linux-user/nios2/cpu_loop.c
@@ -48,6 +48,14 @@ 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 syscall_set_return_value.
* Use the QEMU traditional -515 error indication in
--
2.25.1
- [PATCH 0/7] linux-user/nios2: Fix clone and sigreturn, Richard Henderson, 2022/03/20
- [PATCH 2/7] linux-user/nios2: Drop syscall 0 "workaround", Richard Henderson, 2022/03/20
- [PATCH 6/7] linux-user/nios2: Use QEMU_ESIGRETURN from do_rt_sigreturn, Richard Henderson, 2022/03/20
- [PATCH 3/7] linux-user/nios2: Adjust error return, Richard Henderson, 2022/03/20
- [PATCH 7/7] tests/tcg/nios2: Re-enable linux-user tests, Richard Henderson, 2022/03/20
- [PATCH 4/7] linux-user/nios2: Handle special qemu syscall return values,
Richard Henderson <=
- [PATCH 5/7] linux-user/nios2: Remove do_sigreturn, Richard Henderson, 2022/03/20
- [PATCH 1/7] linux-user/nios2: Fix clone child return, Richard Henderson, 2022/03/20