Changeset 654 for trunk/hal/generic

Timestamp:

Nov 14, 2019, 4:03:25 PM (5 years ago)

Author:

alain

Message:

euh...

Location:

trunk/hal/generic

Files:

• hal_context.h (modified) (1 diff)
• hal_switch.h (modified) (1 diff)

trunk/hal/generic/hal_context.h

@@ -49 +49 @@
 
 /****************************************************************************************
- * This function initializes a CPU context from scratch.
+ * This function initializes the CPU context of the thread identified by the <thread>
+ * argument. All slots required to start a new thread must be initialized.
  ****************************************************************************************
  * @ thread  : pointer on the thread descriptor.

trunk/hal/generic/hal_switch.h

@@ -60 +60 @@
  * It restore the calling CPU register values from a CPU context identified by <ctx>.
  * The architecture specific hal_cpu_context_t structure used to store a CPU context
- * is defined in the architecture specific hal_context.c file.
- * When the restore is completed, it simply jumps to the address contained in ra_31.
- * In ALMOS-MKH, ra_31 must contain a pointer on the eret() function, and c0_epc
- * must contain the new main thread entry point.
+ * is defined in the architecture specific hal_context.c file. When the restore is 
+ * completed, it jumps to the entry point of the new process main thread.
+ *
+ * Implementation Note : 
+ * - on the TSAR architecture, register ra_31 must contain a pointer on the
+ *   eret() function, and register c0_epc  must contain the new thread entry point.
+ * - on I86 architecture TODO...
  *************************************************************************************
  * @ ctx     : local pointer on CPU context.