diff options
| -rw-r--r-- | linux-user/syscall.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index a4a1af75f6..ced519d692 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -110,6 +110,10 @@ int __clone2(int (*fn)(void *), void *child_stack_base, CLONE_PARENT_SETTID | CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID) //#define DEBUG +/* Define DEBUG_ERESTARTSYS to force every syscall to be restarted + * once. This exercises the codepaths for restart. + */ +//#define DEBUG_ERESTARTSYS //#include <linux/msdos_fs.h> #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct linux_dirent [2]) @@ -5871,6 +5875,21 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, struct statfs stfs; void *p; +#if defined(DEBUG_ERESTARTSYS) + /* Debug-only code for exercising the syscall-restart code paths + * in the per-architecture cpu main loops: restart every syscall + * the guest makes once before letting it through. + */ + { + static int flag; + + flag = !flag; + if (flag) { + return -TARGET_ERESTARTSYS; + } + } +#endif + #ifdef DEBUG gemu_log("syscall %d", num); #endif |