Changes between Version 2 and Version 3 of common_utils

Timestamp:

Aug 12, 2014, 12:27:08 PM (11 years ago)

Author:

alain

Comment:

--

common_utils

@@ -7 +7 @@
  * They are also used by the kernel in the ''dynamic'' phase, to handle events such as interrupts, exceptions and syscalls. 
 
- === CP0 and CP2 registers access functions ===
+[[PageOutline]]
+
+ == __1) CP0 registers access functions__ ==
+
+ === unsigned int _get_sched( void ) ===
+Returns the virtual address of the scheduler stored in the SCHED register for the processor running the calling task. 
+
+ === unsigned int _get_epc( void ) ===
+Returns the value stored in the EPC register for the processor running the calling task.  
+
+ === unsigned int _get_cr( void ) ===
+Returns the value stored in the CR register for the processor running the calling task. 
+
+ === unsigned int _get_sr( void ) ===
+Returns the value stored in the SR register for the processor running the calling task. 
+
+ === unsigned int _get_bvar( void ) ===
+Returns the value stored in the BVAR register, for the processor running the calling task. 
+
+ === unsigned int _get_procid( void ) ===
+Returns the global processor identifier stored in the EBASE register for the processor running the calling task. 
+
+ === void _set_sched( unsigned int value ) ===
+Writes ''value'' in the SCHED register, for the processor running the calling task. 
+
+ === void _set_sr( unsigned int value ) ===
+Writes ''value'' in the SR register, for the processor running the calling task. 
+
+ === void _it_disable( unsigned int* save_sr_ptr ) ===
+Disables interrupts for the processor running the calling task and save the SR value at address ''save_sr_ptr''.
+
+ === void _it_restore( unsigned int* save_sr_ptr ) ===
+Writes the value pointed by ''save_sr_ptr'' into the SR register, for the processor running the calling task.
+
+
 
  These functions can be used to access the MIPS32 protected registers
 
- === Physical addressing functions ===
+ == __2) Physical addressing functions__ ==
 
-
+ ===
 
  === Miscelaneous functions ===