Changes between Version 5 and Version 6 of common_utils

Timestamp:

Aug 12, 2014, 1:42:15 PM (10 years ago)

Author:

alain

Comment:

--

common_utils

@@ -89 +89 @@
  == __4) SpinLock access functions__ ==
 
-The ''giet_lock_t'' structure is defined in the ''utils.h'' file to have one single lock in a 64 bytes cache line.
+The ''giet_lock_t'' structure is defined in the ''utils.h'' file to have one single lock in a 64 bytes cache line. It should be aligned on a cache line boundary.
 
  === _get_lock( giet_lock_t lock ) ===
@@ -98 +98 @@
 Releases (or initializes) a lock.
 
+ == __5) TTY0 access functions ==
+
+ === void _puts( char* string ) ===
+Displays a ''string'' on kernel TTY0. This function does NOT take the TTY0 lock.
+
+ === void _putx( unsigned int value ) ===
+Displays a 32 bits word as an hexadecimal string on kernel TTY0. This function does NOT take the TTY0 lock.
+
+=== void _putl( unsigned long long value ) ===
+Displays a 64 bits word as an hexadecimal string on kernel TTY0. This function does NOT take the TTY0 lock.
+
+ === void _putd( unsigned int value ) ===
+Displays a 32 bits word as an decimal string on kernel TTY0. This function does NOT take the TTY0 lock.
+
+ === void _printf( char* format, ... ) ===
+Display a format on kernel TTY0. To provide an atomic display, this function takes the lock protecting
+exclusive access to TTY0, entering a critical section until the lock is released.
+Only a limited number of formats are supported:
+ * %d : 32 bits signed   decimal
+ *  %u : 32 bits unsigned decimal
+ *  %x : 32 bits unsigned hexa
+ *  %l : 64 bits unsigned hexa
+ *  %c : char
+ *  %s : string
+
+ === void _getc( char* byte ) ===
+This blocking function uses a polling strategy on the TTY0 status register to get a single character.
+ 
+ == __6) Task context access functions__ ==
+
  == __X) Miscelaneous functions__ ==