gh0s7/mckernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

uti: Hook system calls by binary-patching glibc

Browse Source 
(1) Add --enable-uti option. The binary-patch library is
    preloaded with this option.
(2) Binary-patching is done by syscall_intercept developed by Intel

This commit includes the following fixes:

(1) Fix do_exit() and terminate() handling
(2) Fix timing of killing mcexec threads when McKernel thread calls terminate()

Change-Id: Iad885e1e5540ed79f0808debd372463e3b8fecea
This commit is contained in:
Masamichi Takagi
2018-09-04 09:29:54 +09:00
parent e613483bee
commit e42c414454
15 changed files with 608 additions and 500 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
executer/include/uti.h Normal file
View File

@ -0,0 +1,28 @@
#ifndef UTI_H_INCLUDED
#define UTI_H_INCLUDED
struct syscall_struct {
int number;
unsigned long args[6];
unsigned long ret;
unsigned long uti_clv; /* copy of a clv in McKernel */
};
/* Variables accessed by mcexec.c and syscall_intercept.c */
struct uti_desc {
void *wp; /* Syscall arguments list and record of McKernel context and Linux context */
int mck_tid; /* TODO: Move this out for multiple migrated-to-Linux threads */
unsigned long key; /* struct task_struct* of mcexec thread, used to search struct host_thread */
int pid, tid; /* Used as the id of tracee when issuing MCEXEC_UP_TERMINATE_THREAD */
unsigned long uti_clv; /* copy of McKernel clv */
int fd; /* /dev/mcosX */
struct syscall_struct *syscall_param_top; /* stack-pointer of syscall arguments list */
struct syscall_struct *syscall_param; /* TODO: make it auto variable */
long syscalls[512], syscalls2[512]; /* Syscall profile counters */
int start_syscall_intercept; /* Used to sync between mcexec.c and syscall_intercept.c */
};
#endif