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Added mutex_control syscall for userspace mutexes.

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- Compiles and Codezero runs as normal without touching mutex implementation
- Mutex implementation needs testing.

The mutex control syscall allows userspace programs to declare any virtual
address as a mutex lock and ask for help from the kernel syscall
for resolving locking contentions.
This commit is contained in:
Bahadir Balban
2009-05-29 15:34:04 +03:00
parent ab9e036cb7
commit b11d4c4607
16 changed files with 433 additions and 14 deletions
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4
include/l4/api/syscall.h
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@@ -23,7 +23,8 @@
#define sys_kread_offset 0x28
#define sys_kmem_control_offset 0x2C
#define sys_time_offset 0x30
#define syscalls_end_offset sys_time_offset
#define sys_mutex_control_offset 0x34
#define syscalls_end_offset sys_mutex_control_offset
#define SYSCALLS_TOTAL ((syscalls_end_offset >> 2) + 1)
void print_syscall_context(struct ktcb *t);
@@ -41,5 +42,6 @@ int sys_getid(struct syscall_context *);
int sys_kread(struct syscall_context *);
int sys_kmem_control(struct syscall_context *);
int sys_time(struct syscall_context *);
int sys_mutex_control(struct syscall_context *);
#endif /* __SYSCALL_H__ */