Changeset 345 for soft/giet_vm/giet_drivers/sim_driver.c

Timestamp:

Jun 25, 2014, 2:19:37 PM (10 years ago)

Author:

cfuguet

Message:

giet_vm optimizations:

• Several modifications in GIET_VM in order to support compilation with GCC optimizations (-O2) activated.

• Adding missing volatile in some global variables.

• Using ioread and iowrite utility functions in peripheral drivers which prevent GCC to remove writes or reads in hardware memory mapped registers.

• Code refactoring of stdio printf functions. Now, shr_printf and tty_printf function reuse the same function body. The only difference is that shr_printf wraps printf function call with TTY get lock and release lock.

File:

• soft/giet_vm/giet_drivers/sim_driver.c (modified) (1 diff)

soft/giet_vm/giet_drivers/sim_driver.c

@@ -33 +33 @@
                                  unsigned int * retval) 
 {
-    unsigned int* sim_helper_address = (unsigned int*)&seg_sim_base;
+    volatile unsigned int* sim_helper_address = (unsigned int*)&seg_sim_base;
     
     if (register_index == SIMHELPER_SC_STOP         ||