gnumach/i386/include/mach/i386 mach_i386.defs

[Roland McGrath]

CVSROOT:        /cvsroot/hurd
Module name:    gnumach
Changes by:     Roland McGrath <address@hidden> 02/10/03 22:44:47

Modified files:
        i386/include/mach/i386: mach_i386.defs 

Log message:
        2002-10-03  Roland McGrath  <address@hidden>
        
        * i386/include/mach/i386/mach_i386.defs (i386_set_gdt, i386_get_gdt):
        New routines.
        * i386/i386/user_ldt.c (i386_set_gdt, i386_get_gdt): New functions.
        * i386/i386/gdt.h (USER_GDT, USER_GDT_SLOTS): New macros.
        * i386/i386/thread.h (struct i386_machine_state): New member user_gdt.
        * i386/i386/pcb.c (switch_ktss): Copy those slots into the GDT.

CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/gnumach/gnumach/i386/include/mach/i386/mach_i386.defs.diff?tr1=1.3&tr2=1.4&r1=text&r2=text

Patches:
Index: gnumach/i386/include/mach/i386/mach_i386.defs
diff -u gnumach/i386/include/mach/i386/mach_i386.defs:1.3 
gnumach/i386/include/mach/i386/mach_i386.defs:1.4
--- gnumach/i386/include/mach/i386/mach_i386.defs:1.3   Mon May 27 19:01:51 2002
+++ gnumach/i386/include/mach/i386/mach_i386.defs       Thu Oct  3 22:44:47 2002
@@ -94,3 +94,19 @@
                target_task     : task_t;
                io_perm         : io_perm_t;
                enable          : boolean_t);
+
+/* Modify one of a few available thread-specific segment descriptor slots.
+   The SELECTOR must be a value from a previous call (on any thread),
+   or -1 to allocate an available slot and return the segment selector for it.
+   These slots are copied into the CPU on each thread switch.
+   Returns KERN_NO_SPACE when there are no more slots available.  */
+routine        i386_set_gdt(
+               target_thread   : thread_t;
+       inout   selector        : int;
+               desc            : descriptor_t);
+
+/* Fetch a segment descriptor set with a prior i386_set_gdt call.  */
+routine        i386_get_gdt(
+               target_thread   : thread_t;
+               selector        : int;
+       out     desc            : descriptor_t);