diff options
Diffstat (limited to 'linux-user/errno_defs.h')
| -rw-r--r-- | linux-user/errno_defs.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/linux-user/errno_defs.h b/linux-user/errno_defs.h index b7a8c9ff95..65522c4516 100644 --- a/linux-user/errno_defs.h +++ b/linux-user/errno_defs.h @@ -147,3 +147,12 @@ * kernel uses for the same purpose. */ #define TARGET_ERESTARTSYS 512 /* Restart system call (if SA_RESTART) */ + +/* QEMU internal, not visible to the guest. This is returned by the + * do_sigreturn() code after a successful sigreturn syscall, to indicate + * that it has correctly set the guest registers and so the main loop + * should not touch them. We use the value the guest would use for + * ERESTART_NOINTR (which is kernel internal) to guarantee that we won't + * clash with a valid guest errno now or in the future. + */ +#define TARGET_QEMU_ESIGRETURN 513 /* Return from signal */ |