Changeset 457 for trunk/hal/tsar_mips32/core/hal_context.c

Timestamp:

Aug 2, 2018, 11:47:13 AM (6 years ago)

Author:

alain

Message:

This version modifies the exec syscall and fixes a large number of small bugs.
The version number has been updated (0.1)

File:

• trunk/hal/tsar_mips32/core/hal_context.c (modified) (5 diffs)

trunk/hal/tsar_mips32/core/hal_context.c

@@ -22 +22 @@
  */
 
-#include <hal_types.h>
+#include <hal_kernel_types.h>
 #include <hal_switch.h>
 #include <memcpy.h>
@@ -136 +136 @@
 }   // end hal_cpu_context_alloc()
 
-///////////////////////////////////////////////////
-// The following context slots are initialised :
+/////////////////////////////////////////////////
+// The following context slots are initialised 
 // GPR : a0_04 / sp_29 / ra_31
 // CP0 : c0_sr / c0_th / c0_epc
 // CP2 : c2_ptpr / c2_mode
-///////////////////////////////////////////////////
-error_t hal_cpu_context_create( thread_t * thread )
-{
-    // allocate memory for a CPU context
-    error_t error = hal_cpu_context_alloc( thread );
-
-    if( error ) return error;
-
+/////////////////////////////////////////////////
+void hal_cpu_context_init( thread_t * thread )
+{
     hal_cpu_context_t * context = (hal_cpu_context_t *)thread->cpu_context;
+
+    assert( (context != NULL ), __FUNCTION__, "CPU context not allocated" );
 
     // initialisation depends on thread type
@@ -173 +170 @@
         context->c2_mode = 0x3;
     }
-
-    return 0;
-
-}  // end hal_cpu_context_create()
+}  // end hal_cpu_context_init()
 
 ////////////////////////////////////////////
@@ -243 +237 @@
         assert( (current == child_ptr) , __FUNCTION__ , "current = %x / child = %x\n");
     }
-
 }  // end hal_cpu_context_fork()
+
+//////////////////////////////////////////////
+void hal_cpu_context_exec( thread_t * thread )
+{
+    // re_initialize CPU context
+    hal_cpu_context_init( thread );
+
+    // restore CPU registers ... and jump
+    hal_do_cpu_restore( (hal_cpu_context_t *)thread->cpu_context );
+
+} // end hal_cpu_context_exec()
 
 /////////////////////////////////////////////////
@@ -312 +316 @@
 
 }   // end hal_fpu_context_alloc()
+
+//////////////////////////////////////////////
+void hal_fpu_context_init( thread_t * thread )
+{
+    hal_fpu_context_t * context = thread->fpu_context;
+
+    assert( (context != NULL) , __FUNCTION__ , "fpu context not allocated" ); 
+
+    memset( context , 0 , sizeof(hal_fpu_context_t) );
+}
 
 //////////////////////////////////////////