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| author | Timothy E Baldwin <T.E.Baldwin99@members.leeds.ac.uk> | 2016-05-12 18:47:28 +0100 |
|---|---|---|
| committer | Riku Voipio <riku.voipio@linaro.org> | 2016-05-27 14:49:49 +0300 |
| commit | 14896d32814c78ed5b97a22fbd9e5a6cddc2de80 (patch) | |
| tree | e3fc7fa8d07f2b20b1aaf058f3859120725197fb | |
| parent | da7c8647e51f1f82fb98c40933d0950bca988a6c (diff) | |
linux-user: Define TARGET_ERESTART* errno values
Define TARGET_ERESTARTSYS; like the kernel, we will use this to
indicate that a guest system call should be restarted. We use
the same value the kernel does for this, 512.
Signed-off-by: Timothy Edward Baldwin <T.E.Baldwin99@members.leeds.ac.uk>
[PMM: split out from the patch which moves and renumbers
TARGET_QEMU_ESIGRETURN, add comment on usage]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
| -rw-r--r-- | linux-user/errno_defs.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/linux-user/errno_defs.h b/linux-user/errno_defs.h index 8a1cf76cdb..b7a8c9ff95 100644 --- a/linux-user/errno_defs.h +++ b/linux-user/errno_defs.h @@ -139,3 +139,11 @@ /* for robust mutexes */ #define TARGET_EOWNERDEAD 130 /* Owner died */ #define TARGET_ENOTRECOVERABLE 131 /* State not recoverable */ + +/* QEMU internal, not visible to the guest. This is returned when a + * system call should be restarted, to tell the main loop that it + * should wind the guest PC backwards so it will re-execute the syscall + * after handling any pending signals. They match with the ones the guest + * kernel uses for the same purpose. + */ +#define TARGET_ERESTARTSYS 512 /* Restart system call (if SA_RESTART) */ |