From: Timothy E Baldwin Date: Thu, 12 May 2016 17:47:28 +0000 (+0100) Subject: linux-user: Define TARGET_ERESTART* errno values X-Git-Tag: TizenStudio_2.0_p4.0~6^2~12^2~6^2~244^2~34 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=14896d32814c78ed5b97a22fbd9e5a6cddc2de80;p=sdk%2Femulator%2Fqemu.git 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 [PMM: split out from the patch which moves and renumbers TARGET_QEMU_ESIGRETURN, add comment on usage] Reviewed-by: Peter Maydell Signed-off-by: Peter Maydell Signed-off-by: Riku Voipio --- diff --git a/linux-user/errno_defs.h b/linux-user/errno_defs.h index 8a1cf76..b7a8c9f 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) */