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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
tasks/libl4/include/l4lib/arch-arm/syscalls.h
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@@ -78,6 +78,10 @@ typedef int (*__l4_time_t)(void *timeval, int set);
extern __l4_time_t __l4_time;
int l4_time(void *timeval, int set);
typedef int (*__l4_mutex_control_t)(void *mutex_word, int op);
extern __l4_mutex_control_t __l4_mutex_control;
int l4_mutex_control(void *mutex_word, int op);
/* To be supplied by server tasks. */
void *virt_to_phys(void *);