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| author | Timothy E Baldwin <T.E.Baldwin99@members.leeds.ac.uk> | 2016-05-12 18:47:32 +0100 |
|---|---|---|
| committer | Riku Voipio <riku.voipio@linaro.org> | 2016-05-27 14:49:49 +0300 |
| commit | 2eb3ae27ec3b797eba16338c08dfac23465f0d7b (patch) | |
| tree | f83805057aaf934ea1b2dfe5b4ffbca4a7a405b2 | |
| parent | f0267ef7115656119bf00ed77857789adc036bda (diff) | |
linux-user: Support for restarting system calls for MIPS targets
Update the MIPS main loop code:
* on TARGET_ERESTARTSYS, wind guest PC backwards to repeat syscall insn
(We already handle TARGET_QEMU_ESIGRETURN.)
Signed-off-by: Timothy Edward Baldwin <T.E.Baldwin99@members.leeds.ac.uk>
Message-id: 1441497448-32489-7-git-send-email-T.E.Baldwin99@members.leeds.ac.uk
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: tweak commit message; drop TARGET_USE_ERESTARTSYS define]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
| -rw-r--r-- | linux-user/main.c | 4 | ||||
| -rw-r--r-- | linux-user/mips/target_signal.h | 1 | ||||
| -rw-r--r-- | linux-user/mips64/target_signal.h | 1 |
3 files changed, 6 insertions, 0 deletions
diff --git a/linux-user/main.c b/linux-user/main.c index 7916efc0e2..73e36683f8 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -2528,6 +2528,10 @@ done_syscall: env->active_tc.gpr[8], env->active_tc.gpr[9], env->active_tc.gpr[10], env->active_tc.gpr[11]); # endif /* O32 */ + if (ret == -TARGET_ERESTARTSYS) { + env->active_tc.PC -= 4; + break; + } if (ret == -TARGET_QEMU_ESIGRETURN) { /* Returning from a successful sigreturn syscall. Avoid clobbering register state. */ diff --git a/linux-user/mips/target_signal.h b/linux-user/mips/target_signal.h index 6e1dc8b6e6..460cc9ffef 100644 --- a/linux-user/mips/target_signal.h +++ b/linux-user/mips/target_signal.h @@ -26,4 +26,5 @@ static inline abi_ulong get_sp_from_cpustate(CPUMIPSState *state) return state->active_tc.gpr[29]; } + #endif /* TARGET_SIGNAL_H */ diff --git a/linux-user/mips64/target_signal.h b/linux-user/mips64/target_signal.h index 5fb6a2ccfc..a2dc514e3e 100644 --- a/linux-user/mips64/target_signal.h +++ b/linux-user/mips64/target_signal.h @@ -26,4 +26,5 @@ static inline abi_ulong get_sp_from_cpustate(CPUMIPSState *state) return state->active_tc.gpr[29]; } + #endif /* TARGET_SIGNAL_H */ |