Subversion Repositories HelenOS-historic

Rev

Rev 802 | Rev 1066 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 802 Rev 938
Line 37... Line 37...
37 
/** Enter userspace
 37 
/** Enter userspace
38 
 *
 38 
 *
39 
 * Change CPU protection level to 3, enter userspace.
 39 
 * Change CPU protection level to 3, enter userspace.
40 
 *
 40 
 *
41 
 */
 41 
 */
42 
void userspace(void)
 42 
void userspace(__address entry)
43 
{
 43 
{
44 
    ipl_t ipl;
 44 
    ipl_t ipl;
45 
   
 45 
   
46 
    ipl = interrupts_disable();
 46 
    ipl = interrupts_disable();
47 
 
 47 
 
Line 59... Line 59...
59 
              "iretq;"
 59 
              "iretq;"
60 
              : : "i" (gdtselector(UDATA_DES) | PL_USER),
 60 
              : : "i" (gdtselector(UDATA_DES) | PL_USER),
61 
              "i" (USTACK_ADDRESS+THREAD_STACK_SIZE),
 61 
              "i" (USTACK_ADDRESS+THREAD_STACK_SIZE),
62 
              "r" (ipl),
 62 
              "r" (ipl),
63 
              "i" (gdtselector(UTEXT_DES) | PL_USER),
 63 
              "i" (gdtselector(UTEXT_DES) | PL_USER),
64 
              "i" (UTEXT_ADDRESS));
 64 
              "r" (entry));
65 
   
 65 
   
66 
    /* Unreachable */
 66 
    /* Unreachable */
67 
    for(;;);
 67 
    for(;;);
68 
}
 68 
}